IN the UNITED STATES BANKRUPTCY COURT for the SOUTHERN DISTRICT of TEXAS HOUSTON DIVISION ) in Re: ) Chapter 11 ) HORNBECK

Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 1 of 80

IN THE UNITED STATES BANKRUPTCY COURT FOR THE SOUTHERN DISTRICT OF TEXAS HOUSTON DIVISION

) In re: ) Chapter 11 ) HORNBECK OFFSHORE SERVICES, INC., et al.,1 ) Case No. 20-32679 (DRJ) ) Debtors. ) (Jointly Administered) )

CERTIFICATE OF SERVICE

I, Stephen D. Cady, depose and say that I am employed by Stretto, the claims, noticing, and solicitation agent for the Debtors in the above-captioned cases.

On September 4, 2020, at my direction and under my supervision, employees of Stretto caused the following document to be served via first-class mail on the service list attached hereto as Exhibit A and five (5) confidential parties not listed herein, and via electronic mail on the service list attached hereto as Exhibit B:

 Notice of Occurrence of the Effective Date (Docket No. 308)

Dated: September 18, 2020 /s/ Stephen D. Cady Stephen D. Cady STRETTO 410 Exchange, Suite 100 Irvine, CA 92602 855.258.1004 [email protected]

______1 Due to the large number of Debtors in these proposed Chapter 11 Cases, for which joint administration has been granted, a complete list of the Debtor entities and the last four digits of their federal tax identification numbers is not provided herein. A complete list may be obtained on the website of the Debtors’ proposed claims and noticing agent at https://cases.stretto.com/hornbeck. The location of the Debtors’ service address is: 8 Greenway Plaza, Suite 1525, Houston, Texas 77046. Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 2 of 80

Exhibit A

Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 3 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country 1992 MASTER FUND CO-INVEST SPC FOR THE ACCOUNT OF SERIES I SEGREGATED PORTFOLIO C/O HIGHBRIDGE CAPITAL MANAGEMENT, LLC ATTN: ESTHER JOHNSTON; LIN CHEN 277 PARK AVE FL 23 NEW YORK NY 10172-3002 2F EXPRESS TRANSPORTES LTDA VALTER FOGAEA RUA JORGE MARTINS 433/B13/203 RIO DE JANEIRO RJ 21073190 BRAZIL 3D MARINE USA, INC LAURA STROUTH 12411 DONNA DRIVE HOUSTON TX 77067 741 SOLUTIONS LLC RICH KEIG - SUA RECIPIENT 11391 MEADOWGLEN LANE SUITE A1 HOUSTON TX 77082 A C R PRAXEDES SERVICOS NAVAIS R ITORORO, 90, SALA 02 ALVORADA, VILA VELHA ESPIRITO, CEP 29117-500 BRAZIL A COLLET AMERICAS LLC ANTONIO COLLET 3111, N UNIVERSITY DRIVE # 105 CORAL SPRINGS FL 33065 A J XAVIER INVANTES A J XAVIER INVANTES RUA DJANIR MENDES DOS SANTOS 151 LOJA RIVIERA FULMINENSE MACAE RJ 27935-620 BRAZIL A PLUS FIRST AID & SAFETY ANGEL SMITH PO BOX 29099 SHREVEPORT LA 71149 A S CAMPBELL E TRADUTORES FABIANO NASCIMENTO EDIFICO DE PAOLI AV. NILO PECANHA, N 50 RIO DE JANEIRO RJ 20020-906 BRAZIL A TO Z SAFE LOCK & KEY SUSAN GIBERT PO BOX 1476 MANDEVILLE LA 70470-1476 A2B DESIGN JORUN HELSETH BORLAUG VANNSPRINGDALEN 2 AALESUND AALESUND N-6003 NORWAY AAA COOPER TRANSPORTATION SANDY MIMS PO BOX 935003 ATLANTA GA 31193 5003 AALBORG COMERCIO E SERVICOS EDIMARA DIAS RUA COMERCIANTE SINEZIO TRINDADE COELHO MACAE RJ BRAZIL AARON OIL COMPANY LLC C/O TRADEBE ENVIRONMENTAL SERVICES ATTN: JACKIE CROMWELL 234 HOBART STREET MERIDEN CT 06450 AARON OIL COMPANY, INC. BEVERLY PO BOX 2304 MOBILE AL 36652 AARONS SALES AND LEASE SETH REVELL 241 W 15TH ST PANAMA CITY FL 32401 ABASTECIMIENTOS Y SERVICIOS NEYLA KAIULANI GARCIA PACAB CALLE 51 @28 COL PALLAS CIUDAD DEL CARMEN CAMPECHE 24140 MEXICO ABB, INC. VALENCIA MONTGOMERY - SUA PO BOX 88868 CHICAGO IL 60695 ABEAM GILSON NOBLAT RUA VISCONDE DE INHANGA 134 GR 1005 CENTRO RIO DE JANEIRO RJ 20091 901 BRAZIL ABRAMS-TAYLOR, RYDARRIUS DA'SHUN ADDRESS REDACTED ABREGO, NELSON J ADDRESS REDACTED ABREU ESQUIVEL, MARIO ADDRESS REDACTED ABREU MAY, MANUEL ADDRESS REDACTED ABREU, RAYMOND JOSEPH ADDRESS REDACTED ABS AMERICAS KELSEY CRAMER - SUA RECIPIENT PO BOX 301249 DALLAS TX 75303-1249 UNITED ABS CONSULTING LTD- LONDON FABIO MORAIS THE BEACONS WARRINGTON RD BIRCHWOOD EQE HOUSE CHESHIRE BIRCHWOOD WA WA3 6WJ KINGDOM ABS MEXICO CHERYL MEYERS ABS PLAZA 16855 NORTHCHASE DRIVE HOUSTON TX 77060 MEXICO ABS NAUTICAL SYSTEMS LLC JACK MORENO PO BOX 915090 DALLAS TX 75391-5090 ABS QUALITY EVALUATIONS PAT SINGLETARY PO BOX 915092 DALLAS TX 75391-5092 ABSG CONSULTING INC JOHN R FRANCIC 16855 NORTHCHASE DR. HOUSTON TX 77060 ABURTO FERNANDEZ, DAVID BRYAN ADDRESS REDACTED ACADIAN AMBULANCE SERVICE DEBBIE AYMAND PO BOX 98000 LAFAYETTE LA 70509-8000 ACADIANA ACUTE CARE ASSOC SHERIE PO BOX 6456 METAIRIE LA 70009-6456 ACADIANA CENTER FOR ORTHOPEDIC & OCCUPATIONAL MEDICINE SELENEA TINA SMALLEY 2501 W PINHOOK RD LAFAYETTE LA 70508 ACBL OLDCO, LLC ATTN: SEAN P GALLAGHER 1701 E MARKET ST JEFFERSONVILLE IN 47130 ACBL OLDCO, LLC DAWN R. LANDRY & SEAN P. GALLAGHER 1701 E. MARKET ST. JEFFERSONVILLE IN 47130 ACCELERATED HAND SOLUTIONS LLC JENNA 7047 HWY 190 E SERVICE RD COVINGTON LA 70433 ACCESS RADIOLOGY PO BOX 919112 DALLAS TX 75391-9112 ACCLARIS INC 1511 N. WESTSHORE BLVD SUITE 350 TAMPA FL 33607 ACCURATE BACKGROUND LLC JENNIFER MOTHERWELL - SUA PMT 7515 IRVINE CENTER DR IRVINE CA 92618 ACE AMERICAN INSURANCE COMPANY DBA CHUBB RITA GILLESPIE DEPT CH 14089 PALATINE IL 60055-4089 ACE COMERCIO PRODUCT ALIMENTIC FABRICION TEMTEMPLES RUA FRANCISCO ALVES MACHADO N 62 NOVA AROEIRA MACAE RJ 27.946-410 BRAZIL ACHIEVE EYE AND LASER MARGARET ERICKSON 3260 NW MOUNT VINTAGE WAY SILVERDALE WA 98383-6000 ACIKBAS, MEMET SEYHAN ADDRESS REDACTED ACME TRUCK LINE INC. SHANNON RUNNELS MSC-410683 PO BOX 415000 NASHVILLE TN 37241-5000 ACOSTA CARDENAS, JAIME MIGUEL ADDRESS REDACTED ACOSTA, CARLA GISELE ADDRESS REDACTED ACREMAN, KEVIN M ADDRESS REDACTED ACS INDUSTRIAL SERVICES INC REBEKAH O'CONNELL PO BOX 87 HUNT VALLEY MD 21030 ACTION INDUSTRIAL AND MARINE KATIE LACOSTE - SUA RECIPIENT 662 PLANTATION BLVD MANDEVILLE LA 70448 AD WALKER JR APMC AD WALKER JR PO BOX 14361 BELFAST ME 04915-4036 ADA MARIA RAMOS SALVADOR CRISTIAN A. HERNANDEZ RAMOS ADDRESS REDACTED ADAM, ALEC LOGAN ADDRESS REDACTED ADAMS AND REESE LLP DEBBIE ABADIE DEPT 5208 PO BOX 2153 BIRMINGHAM AL 35287-5208 ADAMS, JARRED LEE ADDRESS REDACTED ADAMS, JARVETT DUSTIN ADDRESS REDACTED ADAMS, ROBERT P ADDRESS REDACTED ADCOCK, LARRY DALE ADDRESS REDACTED ADENSAM, STEVEN B ADDRESS REDACTED ADKINS, THOMAS ANTHONY ADDRESS REDACTED CIUDAD DEL ADMIN NAVIEROS DEL GOLFO GISELA GUTIERREZ 51 A NO 28 COL PALLAS CARMEN CM 24140 MEXICO CD DEL CARMEN ADMINISTRADORA DE BEINES Y DR RICARDO M FERNANDEZ MORA SERVICIOS PROFESIONALES SA DE CALLE 50 NO 12 CAMP 24120 MEXICO ADORNO, FELIX A ADDRESS REDACTED ADP INC PO BOX 842875 BOSTON MA 02284-2875 ADVANCED DIGI-DESIGN INCORPORA JUAN CARRERAS 204-2455 BEACH DRIVE VICTORIA BC V8R6K2 CANADA

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country ADVANCED MEDICAL CNSLT CARENCR JANER ISTRE PO BOX 357 CARENCRO LA 70520 ADVANCED MEDICAL CONSULTING MARY BARTH 14241 COURSEY BLVD SUITE A-12 #317 BATON ROUGE LA 70817 ADVANCED ORTHOPAEDICS & SPINE RODNEY ORTHOPAEDICS & SPINE PO BOX 440460 NASHVILLE TN 37244-0460 ADVANCED PAIN MANAGEMENT PA APRIL ROBERTS 3604 SADDLE RIDGE DRIVE INDEPENDENCE MO 64057-2332 ADVANCED SURGERY CENTER-METAIR VIKI 720 VETERANS BLVD METAIRIE LA 70005 ADVANCED SURGERY CENTER-MONROE GRACIE NALLON 1601 LOUISVILLE AVENUE MONROE LA 71201 ADVANCED SURGICAL CONCEPTS LLC ASHLEY 9118 BLUEBONNET CENTRE BATON ROUGE LA 70809 ADVANTAGE SERVICES ROB REIDENAUER PO BOX 58298 NEW ORLEANS LA 70158-8298 AEGEAN PETROLEO LTDA CARLOS SANTOS PRACA FLORIANO 19 / 20 ANDAR, CENTRO RIO DE JANEIRO RJ 20031-050 BRAZIL TRINIDAD & AEGIS BUSINESS SOLUTIONS LTD PO BOX 1543 18 SCOTT BUSHE STREET PORT OF SPAIN TOBAGO AENEJOTA FERRAGENS LTDA PUALO BELLADONNA RUA BARAO DO AMAZONAS 82 CENTR NITEROI RJ 24030110 BRAZIL AER SUPPLY LTD JANEL MUDGETT 2301 NASA PARKWAY SEABROOK TX 77586 AER SUPPLY LTD. CHERYL S. WEATHERFORD PO BOX 349 SEABROOK TX 77586 AEROSTEEL MANGUEIRAS FLAVIA OLIVEIRA RUA BARAO DO AMAZONAS 86 LOJA NITEROI RJ 24030-110 BRAZIL COL LOS AFIANZADORA SOFIMEX S.A. ALEJANDRO RODRIGUEZ ELORDUY BLVD ADOLFO LOPES MATEOS NO 1941 ALPES MEXICO CITY D F 1010 MEXICO AFIFY, MARWAN AHMED ADDRESS REDACTED AGABIN, ALFONSO R ADDRESS REDACTED AGABIN, ORLINO R ADDRESS REDACTED CIUDAD DEL AGENCIA ADUANAL EXIMP SCP HERMINIO POOT MAGANA CALLE 24 NO 55 COLONIA CENTRO CARMEN CAMPECHE 24100 MEXICO AGENCIA DE SEGURIDAD, ENERGIA Y AMBIENTE BOULEVARD ADOLFO RUIZ CORTINES MEXICO CITY. CP (ASEA) 4209 (PERIFÉRICO SUR), JARDINES EN LA MONTAÑA 14210 MEXICO AGGREKO LLC MARY HENTON PO BOX 972562 DALLAS TX 75397-2562 AGILITY PROJECT LOGISTICS LILY BARCENAS PO BOX 844718 DALLAS TX 75284-4718 AGUILAR SOLIS, GUSTAVO ALEJANDRO ADDRESS REDACTED AGUILAR ZAMORA, JOSE MANUEL ADDRESS REDACTED AGUNDEZ MONTANO, JAIR ELYUD ADDRESS REDACTED AIR AND PROCESS SERVICES LLC TAMMY WILSON - SUA RECIPIENT PO BOX 15622 BATON ROUGE LA 70895 AIR SEA SAFETY & SURVIVAL STEVE HARVEY 120 WILLIMAN STREET CHARLESTON SC 29403 AIRGAS NITROGEN SERVICES LLC MICHAEL JOHNSON 3225 SOLUTIONS CENTER CHICAGO IL 60677-3002 AIRGAS USA LLC TIERNEY MCFARLING PO BOX 734671 DALLAS TX 75373-4671 AIRGROUP CORPORATION KIM ZIMMERMAN - SUA RECIPIENT PO BOX 844722 DALLAS TX 75284-4722 RIO DE JANEIRO - AJ MOBILIDADE CORPORATIVA AV. BARAO DE TEFE, 27 SAUDE RJ 20220-460 BRAZIL AJUBITA, JUSTIN LANDON ADDRESS REDACTED AKERS, KRIGHT B ADDRESS REDACTED AKIN GUMP STRAUSS HAUER & FELD MARY FREDERICK DEPT 7247-6838 PHILADELPHIA PA 19170-6838 AKZO NOBEL LTDA RAQUEL SILVA AV PAIVA, 999 - NEVES SAO GONCALO RJ 24426-148 BRAZIL AL PETRIE INVESTOR & MEDIA AL PETRIE 201 ST. CHARLES AVENUE SUITE 2413 NEW ORLEANS LA 70170 ALABAMA DEPARTMENT OF ENVIRONMENTAL MANAGEMENT 1400 COLISEUM BOULEVARD MONTGOMERY AL 36110-2400 ALABAMA ORTHOPAEDIC CLINIC PC 3610 SPRINGHILL MEMORIAL DRIVE MOBILE AL 36608 ALABAMA STATE PORT AUTHORITY PO BOX 1588 MOBILE AL 36633-1588 ALARCON MARTINEZ, DANIEL ADDRESS REDACTED ALARIO & ASSOCIATES, LLC. BLANCA MORALES PO BOX 16668 SUGAR LAND LA 77478 ALARIO, MICHAEL LOUIS ADDRESS REDACTED ALARIO, NOLTY V ADDRESS REDACTED ALARIO, VINCENT R ADDRESS REDACTED ALASKA CHADUX CORPORATION JENNIFER SPENCER 2347 AZURITE COURT ANCHORAGE AK 99507 ALASKA CLEAN TANKS LLC ROBERT WILSON PO BOX 60415 FAIRBANKS AK 99706 ALASKA SHIP SUPPLY DAISY FENNEL PO BOX 70438 SEATTLE WA 98127 ALATAS AMERICAS INC YANIRA GUZMAN - SUA RECIPIENT 22015 SOUTH FREEWAY MANVEL TX 77578 ALATUR JTB VIAGENS E TURISMO AUGUSTO MORI R SAO JOSE 90 RIO DE JANEIRO RJ 20010 901 BRAZIL ALBANY MEDICAL CENTER HOSPITAL TARA PO BOX 619 ALBANY NY 12201 ALBERTIE, DEANGELO LEWIS ADDRESS REDACTED ALBERTO JAVIER ROJAS PEREZ ADDRESS REDACTED ALBRECHT, JOHN ERIK ADDRESS REDACTED ALCARAZ ALVARADO, ARSENIO ALEJANDRO ADDRESS REDACTED ALCARAZ ALVARADO, CARLOS EMILIO ADDRESS REDACTED ALCARAZ MORENO, GUILLERMO ARTURO ADDRESS REDACTED CUIDAD DEL ALCE SHORE SA DE CV MARTHA ZETINA LOTE 1 A2 PUERTO INDUSTRIAL PESQUERO LAGUNA AZUL CARMEN CM 24129 MEXICO ALCHEMY TECHNOLOGY GROUP, LLC TRES QUALLS PO BOX 4356 DEPT 1928 HOUSTON TX 77210-4356 ALCUDIA SALVADOR, NEFI MORONI ADDRESS REDACTED ALDELIA RECRUTAMENTO JULIO CASTRO RUA MEXICO, 90, CENTRO RIO DE JANEIRO RJ 20031-141 BRAZIL ALDEN, MARCUS ERIC ADDRESS REDACTED ALEGRIA, RENE ALBERTO ADDRESS REDACTED ALEJANDRA KARINA IZGUIERDO CARLOS ALEJANDRO BOJORQUEZ ADDRESS REDACTED

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country ALEJANDRO CARRILLO, EZEQUIEL ADDRESS REDACTED ALEJANDRO DOMINGUEZ, JAIME CESAR ADDRESS REDACTED ALEXANDER FLISI ADDRESS REDACTED ALEXANDER GOW FIRE EQUIPMENT BECKY ROEHL-SUA RECIPIENT ALEXANDER GOW FIRE EQUIPMENT 1436 NW 53RD STREET SEATTLE WA 98107 ALEXANDER, PETER ADDRESS REDACTED ALEXANDER/RYAN MARINE & SAFETY JERRY HAMBY PO BOX 742966 ATLANTA GA 30374-2966 ALFA LAVAL INC. ANIL ROHANI-SHUKLA PO BOX 123227 DEPT 3227 DALLAS TX 75312-3227 ALFA LAVAL LTDA - BRAZIL ROBSON SANTOS AV MUTINGA 4935 VILA JUGUARA SAO PAULO SP 05110 903 BRAZIL ALFARO PEREZ, EDUARDO E ADDRESS REDACTED ALFARO PINEDA, MARCOS ADDRESS REDACTED ALGAR MULTIMIDIA S/A CONSUMER SERVICES RUA JOSE ALVES GARCIA 415 MEZANINO BAIRRO BRASIL UBERLANDIA MG 38400-668 BRAZIL ALGAR TELECOM MARIA DE LOURDES VELAME CRUZ RUA JOSE ALVES GARCIA, 415 UBERLANDIA MG BRAZIL ALIMAC COMERCIO E SERVICOS BRUNO RIBEIRO RUA DOM DINIZ 02 ILHA DA CONCEICAO NITEROI RJ 24050-045 BRAZIL ALKOUSSARI, BASIL FAYEZ ADDRESS REDACTED ALL ACCESS SECURITY LLC DENNIS MURRAY - SUA RECIPIENT 1309 27TH STREET KENNER LA 70062 ALL ACCESS WALK IN CLINIC PATTY 855 BELANGER ST SUITE 200 HOUMA LA 70360 ALL FRESH PRODUCTS INC RICHARD GOODWIN-SUA RECIPIENT 40 20TH STREET SAN DIEGO CA 92102 CIUDAD DEL ALL IN SERVICES SA DE CV YARA SOLANO MORENO AV 31 # 1702 COL FOVISSTE CARMEN CM MEXICO ALL INDUSTRIAL MEDICAL SABRINA FICK 855 BELANGER ST, SUITE 207 HOUMA LA 70360 ALL TEMP REFRIGERATION SERVICE PAT BRUNO 271 HWY 1085 MADISONVILLE LA 70447 2777 N STEMMONS FREEWAY, SUITE ALLEN ISD C/O LINEBARGER GOGGAN BLAIR & SAMPSON LLP ATTN: ELIZABETH WELLER 1000 DALLAS TX 75207 ALLEN, CHELSEA A ADDRESS REDACTED ALLEN, GERREN J ADDRESS REDACTED ALLEN, JEFFREY DAVID ADDRESS REDACTED ALLERGY AND ASTHMA CENTER 6160 N DAVIS HWY SUITE 3 PENSACOLA FL 32504 ALLIANCE ADVISORS LLC MICHELE CIANCI 200 BROADACRES DRIVE 3RD FLOOR BLOOMFIELD NJ 07003 ALLIANCE LASER INC JESSICA SMITH 60207 CAMP VILLERE RD SLIDELL LA 70460-4223 TRINIDAD & ALLIED CATERERS LIMITED SOOKNATH KOON KOON GOLDEN GROVE ROAD PIARCO TOBAGO ALLIED ELECTRONICS INC JULIA NASH PO BOX 2325 FORT WORTH TX 76113 ALLIED ELECTRONICS, INC. MELINDA ESTRADA 7151 JACK NEWELL BLVD S. FORT WORTH TX 76118 ALLIED WORLD NATIONAL ASSURANCE COMPANY 27 RICHMOND ROAD PEMBROKE HM 08 BERMUDA ALLMAN, STEVEN R ADDRESS REDACTED ALLPARK/ESTAPAR LUIS FRANCA AV JOSE SILVA DE AZEVEDO NETO N 200 BARRA DA TIJUCA RJ 22775-056 BRAZIL ALMAGUER FLORES, MARIO ADDRESS REDACTED ALONSO ACEVEDO, MIGUEL ANGEL ADDRESS REDACTED DE BENITO ALPHA DIGITAL SA DE CV CARMEN MARQUEZ AV UXMAL MSA 1 LT 14 ESTRE ESQUINA ANDER Y CALLERUB JUAREZ MEXICO ALPHA RENTAL TOOLS INC KAREN BOUDOIN 4836 HWY 182 HOUMA LA 70364 ALPHATRON MARINE USA MICHAEL STROMFELD 1205 BUTLER ROAD LEAGUE CITY TX 77573 ALPHONSO, NICOLE I. ADDRESS REDACTED ALTIERI, CHANDLER JOSEPH ADDRESS REDACTED ALTOMAR EQUIPAMENTOS LTDA ISABEL JUNG R. SANTA CLARA, N 33 COBERTURA 03 - COPACABANA RIO DE JANEIRO RJ 22041-011 BRAZIL ALUDRA DEDETIZACOES LTDA EMELLY GOMEZ RUA DR BENEDITO CARLOS FERREIR 2320 PARQUE AEROPORTO MACAE RJ 2790-000 BRAZIL ALVARADO CRUZ, ESTEBAN ADDRESS REDACTED 2 CDRAS AL ESTE 2 1/2 ALVARADO Y ASOCIADOS CL JOSE CORREA PLANES DE ALTAMINA III ETAPA SEMAFOROS ENITEL VILLA FONTANA CDRS N MANAGUA NI NICARAGUE ALVAREZ BERMUDEZ, JOSE RAMON ADDRESS REDACTED ALVAREZ CANTU, JUAN CARLOS ADDRESS REDACTED ALVAREZ GARDUZA, EDUARDO ADDRESS REDACTED ALVAREZ INFANTE, JOSE DAMIAN ADDRESS REDACTED ALVAREZ MADUENO, JOSE LUIS ADDRESS REDACTED ALVAREZ TOSTADO BUSTAMANTE, JOSE OMAR ADDRESS REDACTED ALVAREZ, CHRISTOPHER DANILO ADDRESS REDACTED ALVAREZ, RICARDO A ADDRESS REDACTED LOS PINOS ALVARO CUAUHTEMOC SANCH ANA TRUJILLO AVENIDA GUADALUPE VICTORIA NO 185 VERACRUZ 91870 MEXICO ALVES JUNIOR, ROMULO PAULO DA COSTA ADDRESS REDACTED AM CLEANING SERVICE ROBERTO L MENDOZA 3233 MANGUM RD APT 385 HOUSTON TX 77092-7492 AMADEO, SALVATORE GUIDO ADDRESS REDACTED AMADOR, DENNIS ROBERT ADDRESS REDACTED AMBIENT HEALTHCARE OF WEST FL KELLEY MAJEWSKI 4710 EISENHOWER BLVD SUITE A-12 TAMPA FL 33634 4400 POST OAK AMEGY INVESTMENTS, INC. COMMISSIONS DEPARTMENT ATTN: COMMISSIONS DEPT TH-G005-5808 PARKWAY HOUSTON TX 77027 AMERICAN BUREAU OF SHIPPING ANA CAROLINA VIEIRA RUA ACRE 15 11 ANDAR RIO DE JANEIRO RJ 20081000 BRAZIL AMERICAN COMMERCIAL BARGE LINE LLC ATTN: SEAN P GALLAGHER 1701 E MARKET ST JEFFERSONVILLE IN 47130

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country AMERICAN COMMERCIAL BARGE LINE LLC DAWN R. LANDRY & SEAN P. GALLAGHER 1701 E. MARKET ST. JEFFERSONVILLE IN 47130 AMERICAN GLOBAL MARITIME ESTRELLA ROSA 1155 DAIRY ASHFORD RD STE 250 HOUSTON TX 77079-3012 AMERICAN LONGSHORE MUTUAL ASSOCIATION LTD KEVIN MALPAS PO BOX 934368 ATLANTA GA 31193-4368 AMERICAN OIL CONSULTANTS SALVATORE DIMAURO 80 LIPPINCOTT ROAD LITTLE SILVER NJ 07739 AMERICAN RECOVERY L.L.C. DARLENE LAJAUNIE; DIONNE CHOUEST AUSTIN 16201 EAST MAIN STREET CUT OFF LA 70345 AMERICAN RIGGING & SUPPLY DEBBIE FERNANDES 2380 MAIN STREET SAN DIEGO CA 92113 AMERICAN VULKAN CORPORA SUE STEFANSKI PO BOX 673 WINTER HAVEN FL 33882-0673 AMETHYST MARINE SERVICES MS NARISSA HAROON 9 CAMP STREET WERK-EN-RUST GEORGETOWN GUYANA AMICO, CHRISTIAN PHILLIP ADDRESS REDACTED AMSTERDAM, GRANT ALBERT ADDRESS REDACTED AMV LOCACAO E TURISMO EIRELLE ANDERSON DOS SANTOS RUA SACADURA CABRAL 51 SALA 804 RIO DE JANEIRO RJ 20081261 BRAZIL ANALISYS AUDITORIA CONSULTORIA ORLANDO PINTO DE CAMPOS AVENIDA JARDINS DE SANTA MONIC 100 BLOCO 1 APT 904 BARRA DA TIJUCA 22973095 BRAZIL ANATOMIX PHYSICAL THERAPY 3916 HWY 22 SUITE 3 MANDEVILLE LA 70471 ANCHOR MARINE AND INDUSTRIAL S STACY FRIERY PO BOX 58645 HOUSTON TX 77258 ANDERSON ZAVALETA, WILLIAM MORDOCK ADDRESS REDACTED ANDERSON, CHERYL L ADDRESS REDACTED ANDERSON, CODY M ADDRESS REDACTED ANDERSON, GARRETT GRANT ADDRESS REDACTED ANDREW J. DIGNAN ADDRESS REDACTED ANDREWS INSTITUTE ASC LLC NATASHA HOWARD 1040 GULF BREEZE PARKWAY SUITE 100 GULF BREEZE FL 32561 ANDREWS, PAUL MICHAEL ADDRESS REDACTED ANDREWS, RICHARD D ADDRESS REDACTED ANESTHESIA ASSOCIATES SHARON THOMPSON PO BOX 5587 BEAUMONT TX 77726-5587 ANESTHESIA ASSOCIATES GROUP SHARON THOMPSON PO BOX 5876 BEAUMONT TX 77726-5876 CIUDAD DEL ANGEL DE JESUS CAMPAN SALVADOR ANGEL DE JESUS CAMPAN SALVADOR CALLE ABASOLO NO 41 FRACCIONAMIENTO VILLA CARMEN CAMPECHE 24155 MEXICO ANGELES MAR, FELIPE ADDRESS REDACTED ANGELETTE PICCIOLA LLC MARIE PIERCE PO BOX 970 LAROSE LA 70373 ANGLEBERGER, JEFFERY J ADDRESS REDACTED ANGULO CASTELLANOS, EDY ADDRESS REDACTED ANJ TINTAS NAVAIS E INDUSTRAIS ADEMAR RUA BARAO AMAZONAS 82 NITEROI RJ 24030 005 BRAZIL ANN HARRIS BENNETT TAX COLLECT PO BOX 4622 HOUSTON TX 77210-4622 ANNESSA, CARL G ADDRESS REDACTED ANTAH, YAFET ADDRESS REDACTED ANTONIO ANDERE PEREZ MORENO ANTONIO ANDERE ADDRESS REDACTED ANTONIO CARLOS TRANSPORTE ROBSON OR FLAVIA RUA BARAO DE MAUA 346 PONTA D AREIA NITEROI RJ 24040 280 BRAZIL ANTUNES, JOAO C ADDRESS REDACTED SAN FRANCISCO DE API CAMPECHE CP ANTONIO PRIEGO LATOURNERIE CALLE 20 NO 160 POR PONIENTE LERMA CAMPECHE CAMPECHE 24500 MEXICO API TABASCO OSCAR OMAR DE DIOS NARANJO RECINTO FISCAL AUTORIZADO PINO SUAREZ ESQ CENTRO TB 86750 MEXICO CIUDAD DEL APOYO LOGISITICO AEREO MARCO ANTONIO JIMENEZ GAMBOA AV ISLA DE TRIS ENTRE AV AVIACION Y PERIEFERIC CARMEN CM MEXICO APPLETON MARINE INC DILLON LARSON - SUA RECIPIENT 3030 E PERSHING STREET APPLETON WI 54911 8671 UNITED APPLIANSYS LIMITED LUCY TURNBULL APPLIANSYS HOUSE HARRY WESTON ROAD COVENTRY CVE 2UB KINGDOM AQUAPAR CONSULTORIA NAVAL LTDA DORA DOURADO RUA DA ASSEMBLELA N 19 SALSA 801 RIO DE JANEIRO RJ 20011-001 BRAZIL PESQUERO LAGUNA CD DEL CARMEN AQUASERVICES DEL GOLFO JULIO CESAR ORTIZ SEVERINO AV 2 ORIENTE MANZ G LOTE 4A2 PUERTO INDUSTRIAL AZUL CAMP 24140 MEXICO AQUINO ALVARADO, JESUS ADDRESS REDACTED CIUDAD DE AR MULTISERVICIOS SA DE CV LOURDES ABAD RIO DANUBIO NO 47 OFICINA 2ND PISO MEXICO 6500 MEXICO ARANSAS - CORPUS CRISTI PILOTS KATHY ELLER PO BOX 2767 CORPUS CHRISTI TX 78403-2767 ARAUJO ABREU ENGENHARIA SA RITA SANTOS AV ITAOCA 1713 GALPAO INHAUMA RIO DE JANEIRO RJ 21061-021 BRAZIL ARAUJO, ALEXANDRE DE CASTRO ADDRESS REDACTED ARAUJO, STEPHANYE CHRISTINY DE ALMEIDA TELES DE ADDRESS REDACTED ARCE, ESMERALDY ADDRESS REDACTED ARCENEAUX, CID PAUL ADDRESS REDACTED ARCEO GOMEZ, MARIO ADDRESS REDACTED ARECHIGA RODRIGUEZ, ROBERTO CARLOS ADDRESS REDACTED ARENT FOX LLP BETH BROWNSTEIN 1717 K STREET NW WASHINGTON DC 20006-5344 ARIAS ANTONIO, RODOLFO ADDRESS REDACTED ARIES ESCROW 103 NORTHPARK BLVD COVINGTON LA 70433 ARIES MARINE & INDUSTRIAL MELISSA LAGASSE 13405 SEYMOUR MYERS BLVD SUITE 20 COVINGTON LA 70433

ARISTEIA MASTER LP C/O ARISTEIA CAPITAL LLC ATTN: WILLIAM TECHAR; JASON KROLL ONE GREENWICH PLAZA, 3RD FLOOR GREENWICH CT 06830

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 4 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 7 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country C/O OFFICE OF ARIZONA ATTORNEY GENERAL % ARIZONA DEPARTMENT OF REVENUE TAX, BANKRUPTCY AND COLLECTION SCT 2005 N CENTRAL AVE SUITE 100 PHOENIX AZ 85004 ARIZONA DEPARTMENT OF REVENUE MARK STEINKE 1600 W MONROE 7TH FLOOR PHOENIX AZ 85007 ARKHIPOV, ARSENII ADDRESS REDACTED ARMADA CORP DBA ARMADA ADMINISTRATORS AMANDA KIKOLA PO BOX 37769 BALTIMORE MD 21297-3769 ARMAZEM OFFSHORE DE MACAE ANTONIIO AV DUQUE DE CAXIAS 190 VISCONDE ARAUJO MACAE RJ 27910 BRAZIL ARMENTA RUIZ, CRISTO FERNANDO ADDRESS REDACTED ARMENTA RUIZ, ROBERTO CARLOS ADDRESS REDACTED ARMSTRONG, JAMES M ADDRESS REDACTED ARNAUD, DOUGLAS JAMES ADDRESS REDACTED ARNOLD & ARNOLD INC TUCK ARNOLD 2329 INDIA STREET SAN DIEGO CA 92101-1209 ARNOLD & ARNOLD INC TUCK ARNOLD 2329 INDIA STREET SAN DIEGO CA 92101-1209 ARNOULT, RICHARD EMILE ADDRESS REDACTED ARNY, JOHN CHRISTOPHER ADDRESS REDACTED ARROW INDUSTRIAL MANAGEMENT JERRY DARDAR - SUA RECIPIENT 125 LITTLE FARMS RD YOUNGSVILLE LA 70592 ARROW SEPTIC, INC. JEFF LEWIS 263 HAUK RD. PORT ANGELES W A 98362 ART CATERING JILL LOUPE 132 JARRELL DR BELLE CHASSE LA 70037 ARTEFATOS TECNICOS DE BORRACHA ANDERSON RUA MARCHAL DEODORO 114 118 CENTRO NITEROI RJ 24030060 BRAZIL ARTHUR TAYLOR C/O HILLTOP SECURITIES ADDRESS REDACTED ARTHUR TAYLOR C/O HILLTOP SECURITIES ADDRESS REDACTED CIUDAD DEL ARTICULOS ELECTRICOS INDUSTRIA DIANELA OJEDA CALLE 20A NO 14 ENTRE 49 Y 47 PALLAS CARMEN CM 24100 MEXICO ARUKWE, GERALD C ADDRESS REDACTED ASCAP MICHELLE MCKINNEY PO BOX 331608-7515 NASHVILLE TN 37203-9998 ASCENDE SMQS ASSESSORIA JULIO KHALIL AV ALCIBIADES SABINO DOS SANTOS RIO DAS OSTRAS 28895658 BRAZIL ASEGURADORA INTERACCIONES SA DE CV ERIKA VIGIL SERRANO REFORMA NO 383 PISO 5 COL CUAUTHEMOC, MEXICO CITY MEXICO CITY 6500 MEXICO ASEKRETOV, KONSTANTIN VLADIMIROVICH ADDRESS REDACTED ASHLAND LLC ATTN: RICHMOND L WILLIAMS 500 HERCULES ROAD WILMINGTON DE 19808 ASHLAND, LLC RICHMOND WILLIAMS 500 HERCULES ROAD WILMINGTON DE 19808 ASHOK V. BHATT ADDRESS REDACTED

ASIG INTERNATIONAL LIMITED C/O ARISTEIA CAPITAL LLC ATTN: WILLIAM TECHAR; JASON KROLL ONE GREENWICH PLAZA, 3RD FLOOR GREENWICH CT 06830 ASSOCIATED BRANCH PILOTS KATHRYN BIDDLE PO BOX 8563 METAIRIE LA 70001 ASSOCIATED FEDERAL PILOTS DEBBIE BRANIGAN PO BOX 52852 LAFAYETTE LA 70505-2852 ASSOCIATED OFFICE SYSTEMS TRULY SMITH 400 POYDRAS STREET SUITE 1700 NEW ORLEANS LA 70130 SÃO CRISTÓVÃO, RIO DE JANEIRO, RUA FRANCISCO EUGENIO, Nº 268, RJ, CEP 20.941- ASTROMARITIMA NAVEGAÇÃO, S.A. SALA 901 120 BRAZIL RIO DE JANEIRO, ASTROMARITIMA NAVEGAÇÃO, S.A. BASILIO ADVOGADOS AV. PRESIDENTE WILSON, N. 210 12TH FLOOR, CENTRO RJ 20030-0021 BRAZIL SÃO CRISTÓVÃO, RIO DE JANEIRO, ASTROMARITIMA NAVEGAÇÃO, S.A. C/O BASILIO ADVOGADOS RUA FIGUEIRA DE MELO, NO. 338 RJ BRAZIL ED. RB1 - 14° ASTROMARITIMA NAVEGAÇÃO, S.A. C/O KINCAID MENDES VIANNA ADVOGADOS ATTN: GODOFREDO MENDES VIANNA AV. RIO BRANCO, 1 ANDAR RIO DE JANEIRO CEP 20090-003 BRAZIL AT&T PO BOX 5019 CAROL STREAM IL 60197-5019 AT&T 0573175437001 PO BOX 105068 ATLANTA GA 30348-5068 AT&T 1426558843 PO BOX 5014 CAROL STREAM IL 60197-5014 AT&T 171-799-9283 007 PO BOX 5019 CAROL STREAM IL 60197-5019 AT&T 76690 ANTHONY SPARTZ PO BOX 9005 CAROL STREAM IL 60197-9005 AT&T 80030525929 PO BOX 5019 CAROL STREAM IL 60197-5019 AT&T 8310002561762 PO BOX 5019 CAROL STREAM IL 60197-5019 AT&T 8310002758245 PO BOX 5019 CAROL STREAM IL 60197-5019 AT&T 8310002766678 PO BOX 5019 CAROL STREAM IL 60197-5019 AT&T 8310002766704 PO BOX 5019 CAROL STREAM IL 60197-5019 AT&T 8310003518289 PO BOX 5019 CAROL STREAM IL 60197-5109 AT&T 8310004356669 WRENWICK DREXLER PO BOX 5019 CAROL STREAM IL 60197-5019 AT&T 8310006865907 PO BOX 5019 CAROL STREAM IL 60197-5019 AT&T CORP ATTN: MASTER AGREEMENT SUPPORT TEAM ONE AT&T WAY BEDMINSTER NJ 07921-0752 AT&T HYBRID CLOUD SOLUTIONS ATTN: CARLOS OLORTEGUI 3300 W. ESPLANADE AVE METAIRIE LA 70002 AT&T MOBILITY PO BOX 5019 CAROL STREAM IL 60197-5019 AT&T MOBILITY PO BOX 6463 CAROL STREAM IL 60197-6463 ATACADAO PAPELEX LTDA ANA LUISA RUA FRANCISCO DE SOUZA E MELO 252 RIO DE JANIERO RJ 21031000 BRAZIL ATAIDE, MARCUS VINICIUS MOURAO ADDRESS REDACTED ATHILON CAPITAL CORP. LLC C/O MERCED CAPITAL, L.P. ATTN: STUART BROWN 601 CARLSON PARKWAY, SUITE 200 MINNETONKA MN 55305 ATLANTIC ANESTHESIA INC JANET CURLING PO BOX 791207 BALTIMORE MD 21279-1207 ATLANTICARE CLINICAL LAB GAIL SHEEHAN PO BOX 785616 PHILADELPHIA PA 19178-5616 ATLAS COPCO COMPRESSORS LLC MARTHA YORK DEPT CH 19511 PALATINE IL 60055 9511

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 5 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 8 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country TLALNEPANTLA ATLAS COPCO MEXICANA SA DE CV CARLOS CONSTANTINO JIMENEZ PER BLVD ABRAHAM LINCOLN NO. 13 COL EDO MEXICO ATLAS HOSE & GASKET CO LLC DON SHARPE POST OFFICE BOX 57178 NEW ORLEANS LA 70157-7178 AUCOIN CLAIMS SERVICE INC. TERRY IMBRAGULIO 424 REALTY DRIVE SUITE C GRETNA LA 70056 AUDLER, GREGORY J ADDRESS REDACTED AUGI, MATTHEW J ADDRESS REDACTED AUNE, BJORN ROBERTSTAD ADDRESS REDACTED AUTOMATION CONTROL CO DEIDRE NEWSOM 11914 CLOVERLAND COURT BATON ROUGE LA 70809 CD DEL CARMEN AUTOTRANSPORTE TURISTICOS LUIS LOPEZ CALLE 46 16 ENTRE 17 D Y 17 A CAMP 24180 MEXICO AVERETT, JOHN M ADDRESS REDACTED AVERITT EXPRESS INC MARILYN HYDEN PO BOX 102197 ATLANTA GA 30368-2197 AVIATION MARITIME SERVICES DEBORAH ANN CAVALCANTE PO BOX 16176 AMELIA ISLAND FL 32035 AVILA PALMA, DONIZETTY ROGELIO ADDRESS REDACTED AVILA, FERNANDO MANUEL ADDRESS REDACTED CIUDAD MADERO AVITUALLADORA Y DE SERVICIOS HUMBERTO MURILLO LOREDO CALLE 15 NO 125 COLONIA LOS PINOS TAMA 89513 MEXICO AVRA GROUP LIMITED DEBORAH BLAIR 2 AQUARIUM DRIVE SUITE 300 CAMDEN NJ 08103 AWS ENGENHARIA CONSULTORIA RICARDO NASCIMENTO SILVA R DOUTOR CESESTINO 122 CENTRO NITEROI RJ BRAZIL TLACOQUEM AXA SEGUROS SA DE CV JOSE MIGEL LOYO FELIX CUEVAS 366 PISO 6 ECATL MEXICO CITY DF DF 3200 MEXICO AZEEZ, HAAMID SALEEN ABDUL ADDRESS REDACTED B & J MARTIN INC. GAIL MARTIN PO BOX 448 CUT OFF LA 70345 B AND J'S CAB LLC BARBARA LABOUVE PO BOX 125 HOUMA LA 70360 11100 SANTA MONICA BLVD., SUITE B. RILEY FBR, INC. ATTN: MICHAEL CHRIS MUNCK; PAUL CHOI 800 LOS ANGELES CA 90025 B.LOTTI MOVIMENTACAO DE CARGAS GREICE KELLI PIANEZZER RODIVA BR 280 N 15765 KM-60 BAIRRO IMIGRANTES GUARAMIRIM SC 89.270-00 BRAZIL BABB, MARTIN J ADDRESS REDACTED BADAMS, MATTHEW MAYNARD ADDRESS REDACTED BAE SYSTEM SE SHIPYD JKSNVL ART THOMAS BAE SYS SE SHPYDS MAIL CD 5603 PO BOX 105046 ATLANTA GA 30348-5046 BAE SYSTEMS SAN FRANCISCO SHIP DENNIS DEISINGER PO BOX 7644 SAN FRANCISCO CA 94107 BAGWELL, MARK E ADDRESS REDACTED BAILES, NATHANIEL BRADLEY ADDRESS REDACTED BAKER BOTTS LLP DONNA JUNG P.O.BOX 301251 DALLAS TX 75303-1251 BAKER DONELSON BEARMAN SUA RECIPIENT 165 MADISON AVE SUITE 2000 MEMPHIS TN 38103 BAKER LYMAN AND CO. INC. MIKE SERAFIN 5250 VETERANS MEM. BLVD. METAIRIE LA 70006 BAKER MARINE SOLUTIONS LLC GIGI PATTON 17438 HARD HAT DRIVE COVINGTON LA 70435 BAKER, DON LEE ADDRESS REDACTED BAKER, JASON SCOTT ADDRESS REDACTED BAKER, WELS ADDRESS REDACTED BALDWIN, JEFFREY THOMAS ADDRESS REDACTED BALKE, SHANNA LEE ADDRESS REDACTED BALLARD PETROLEUM, INC JACKIE BOUDREAUX PO BOX 769 ROSELAND LA 70456 BALLEZA GARCIA, LUIS DAVID ADDRESS REDACTED UNITED BALTIC CREW INTERNATIONAL DARYA KOKSHAROVA BALTIC HOUSE, STATION ROAD BALLASALLA ISLE OF MAN IM9 WAE KINGDOM AGRICOLA CHIMALISTA MEXICO CITY CP BANAMEX INSURGENTES SUR 1918 PISO 1 C 01070 MEXICO BOTAFOGO, RIO DE JANEIRO - RJ, BANCO BRADESCO SA TORRE RIO SUL-URJ, AG: 2495-5 AV LAURO SODRE 445, LJ 101 22290-070 BRAZIL BANCORPSOUTH INSURANCE SERVICES INC DBA STEWART SNEED HEWES 213 PORTER AVE P.O. DRAWER 228 BILOXI MS 39533 BANDEN, ROBERT WILLIAM ADDRESS REDACTED BANFELL, FREDERICK H. ADDRESS REDACTED BANK OF AMERICA MERRILL LYNCH SHAWN DOUGLAS PO BOX 1501 MAIL CODE NJ2-140-03-50 PENNINGTON NJ 08534-9809 BANK OF AMERICA N A ACCOUNTS RECEIVABLE 150 N COLLEGE ST NC1 028 17 06 CHARLOTTE NC 28255 NC1-026-05- BANK OF AMERICA, N.A. ATTN: INFORMATION MANAGER GATEWAY VILLAGE #900 900 WEST TRADE ST. 41 CHARLOTTE NC 28202 BANKS, DYLAN CARSON ADDRESS REDACTED BANKSTER, DEBRA S ADDRESS REDACTED BANKSTON, DANIEL SHANE ADDRESS REDACTED BANKSTON, JESSE CLYDE ADDRESS REDACTED BANKSTON, JESSICA H ADDRESS REDACTED BANOS GONZALEZ MANUEL ALFONSO MANUEL ALFONSO BANOS GONZALES PROLONGACION PASEO USUMACINTA 2085 VILLAHERMOSA TB 86035 MEXICO BAPTIST HOSPITAL INC ALEXANDRA MURPHY PO BOX 402517 ATLANTA GA 30384-2517 BAPTIST MEDICAL GROUP LLC PO BOX 17567 PENSACOLA FL 32523 BAPTIST OCCUPATIONAL HEALTH CL BRENDA ANDERSON 9400 UNIVERSITY PARKWAY SUITE 101A PENSACOLA FL 32514 BAPTIST PHYSICIAN ASSOCIATES PO BOX 17668 PENSACOLA FL 32523

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country BAPTIST PHYSICIAN GROUP SHAVONNE PO BOX 30532 PENSACOLA FL 32503-1532 BAPTISTA, SEAN MONROE ADDRESS REDACTED BAPTISTE, JORDAN EDWARD ADDRESS REDACTED BARBER, JENNIFER ROCHELLE ADDRESS REDACTED BARBER, KEITH D ADDRESS REDACTED BARBOSA, GIULIA TOLEDO MIRANDA INACIO ADDRESS REDACTED ABERDEEN AB10 UNITED BARCLAYS UNION PLAZA 1 UNION WYND 1SL KINGDOM BARCLAYS CAPITAL INC MARYANN ZGALJARDIC 745 SEVENTH AVE NEW YORK NY 10019 BARCLAYS CAPITAL REAL ESTATE, INC. 745 SEVENTH AVENUE NEW YORK NY 10019 BARD, MICHAEL S ADDRESS REDACTED BARNARD AND ASSOCIATES INC KATHLEEN BARNARD 5319 HWY 90 SUITE 102 MOBILE AL 36619 BARNES REHABILITATION CENTER MICHAEL BARNES #8 PROFESSIONAL DRIVE HOUMA LA 70360 BARNETT, BENJAMIN J ADDRESS REDACTED BARNETT, CHRISTOPHER MICHAEL ADDRESS REDACTED BARONE, FRANK J ADDRESS REDACTED BARRA LETTER SHOP LTDA GRASIELLE SOUZA AV DE AMERICAS 5150 LOJA 31 RIO DE JANEIRO RJ 22640-971 BRAZIL BARRERA CARRILLO, MOISES ADDRESS REDACTED BARRERA MEZA, MOISES ADDRESS REDACTED BARRERA, VINCENT ADDRESS REDACTED BARRETO MORALES, NICK RICHARD ADDRESS REDACTED BARRETO OFFSHORE COMERCIO LTDA ALVARO RUA DOS ANTURIOS 45 VILLAGE PARK PARQUE AEROPUERTO MACAE RJ 27950840 BRAZIL BARRETO, SAMUEL DA SILVA ADDRESS REDACTED BARRIER REEF EMERGENCY PHYSICI SHERRIE PO BOX 98694 LAS VEGAS NV 89193 BARRIERE, JARVIS R ADDRESS REDACTED BARRY, ROBERT E ADDRESS REDACTED BARTELLI, JOSHUA A ADDRESS REDACTED BARTLETT, MARCUS ADDRESS REDACTED BARTLETT, ROBERT ADDRESS REDACTED BARTON, JACOB KENT ADDRESS REDACTED BASSA, CARLOS FRANCISCO ADDRESS REDACTED BASTOS, CORNELIO SERGIO ADDRESS REDACTED BASTOS, ISRAEL PEDROZA ADDRESS REDACTED RUA DR PORCIUNCULA 226, PARTE SAO GONCALO, BATERIAS ALAMO COSTA LTDA 120 RJ 1201 RJ 24411-005 BRAZIL BATES RELIABLE SOLUTIONS LLC LYLE BATES PO BOX 8824 THE WOODLANDS TX 77387-8824 BATES, NICKOLAS L ADDRESS REDACTED BATTAGLIA, TOM JOSEPH ADDRESS REDACTED BATYSHEV, ALEXANDER VALEREVICH ADDRESS REDACTED BAUSCH, JACOB RICHARD ADDRESS REDACTED BAY AREA PUMPS INC DONNA WILSON - SUA RECIPIENT 5115 N. MAIN STREET BAYTOWN TX 77521 BAY MARITIME CONSULTING, LLC. MARLA CHURCHILL 2336 FOXWORTH DRIVE PANAMA CITY FL 32405 BAY MEDICAL CTR-SACRED HEART ACCOUNT RECEIVABLE SACRED HEART HEALTH SYSTEM PO BOX 59515 PANAMA CITY FL 32412 BAYER, EDMUND FRANK ADDRESS REDACTED BAYOU BLACK ELECTRIC SUPPLY ENOLA WILLIAMSON - SUA RECIPI 5086 HWY 311 HOUMA LA 70360 BAYOU RADIOLOGY, INC. TONI DUPRE PO BOX 6515 METAIRIE LA 70009 BAYOU SHEET METAL SERVICES TERRI 3552 INDUSTRIAL AVE A HOUMA LA 70363 BAYOU STREET METAL SERVICES, LLC EUGENE B LUKE 3552 INDUSTRIAL AVE A HOUMA LA 70363 BAYOU SURGICAL SPECIALISTS LLC CASSIE LIRETTE OR VICKI HEBERT 5619 HWY 311 SUITE A HOUMA LA 70360 BAZAN CAMBRE AND ORTS SOCIEDAD CARLOS VALIENTE NOAILLES TTE GRAL J D PERON 555 PISO 5 BUENOS AIRES C1038AAK ARGENTINA BBP SALES LLC REGINA BARNHIL - SUA RECIPIENT 337 HIGHLANDIA DRIVE BATON ROUGE LA 70810 BEARB, DONIEL JAMES MCKENZIE ADDRESS REDACTED BEARCOM LINDA MUSSER PO BOX 670354 DALLAS TX 75267-0354 BEARD, BRETT TRISTAN ADDRESS REDACTED BEARD, CLIFFORD C ADDRESS REDACTED BEARDEN, CHRISTOPHER D ADDRESS REDACTED BEASLEY, MARK B ADDRESS REDACTED

ANA KAREN IZAGUIRRE ALARCON, JULIO LEONARDO BEATRIZ IVON ARTEAGA FELICIANO FLORES BUENO, Y NORMA DELIA TORRES ROMAN ADDRESS REDACTED BEAUFORD, ROBERT T ADDRESS REDACTED BEAUMONT PATHOLOGY ASSOCIATES TONYA BURMIT PO BOX 1400 GREENVILLE TX 75403-1400 BEAUVAIS, MARTIN EDWARD ADDRESS REDACTED BEAZER EAST, INC. ATTN: CHARLES E MCCHESNEY II 600 RIVER AVE, SUITE 200 PITTSBURGH PA 15212 BEAZER EAST, INC. C/O THREE RIVERS MANAGEMENT, INC. 600 RIVER AVE. SUITE 200 PITTSBURGH PA 15212 UNITED BEAZLEY INSURANCE GROUP PLANTATION PLACE SOUTH 60 GREAT TOWER STREET LONDON EC3R 5AD KINGDOM BECK ELECTRIC SUPPLY CO BRUCE ROUNDTREE 2775 GOODRICK AVENUE RICHMOND CA 94801-1109 BECK, KEVIN DWAYNE ADDRESS REDACTED BECKER, LOGAN MICHAEL ADDRESS REDACTED

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country BECLAWAT MANUFACTURING LIAM KEARNEY 90 HANNA COURT SOUTH BELLEVILLE ONT K8P 5H2 CANADA BEIER RADIO LLC TAMMY WARD 1150 N CAUSEWAY BLVD MANDEVILLE LA 70471 BELDEN, STEPHEN R ADDRESS REDACTED BELL, RODREKIS DE'ANGELO ADDRESS REDACTED BELLANGER, ROBERT W ADDRESS REDACTED BELLE CHASSE MARINE TANYA NELSON PO BOX 10890 JEFFERSON LA 70181-0890 BELLISARI, JACLYN REGINA ADDRESS REDACTED SAO RIO GRANDE DO BELTON AUTOMACAO PNEUMATICA NADIRM ROMAN RUA SAO JOAO 1171 CENTRO LEPOLDO SUL 93010250 BRAZIL BELTRAN DIAZ, OSCAR ANDRES ADDRESS REDACTED BELTRAN SOLIS, DANIEL ADDRESS REDACTED BELYEU, KURT THOMAS ADDRESS REDACTED BELZONA OF BATON ROUGE KATHY OUFNAC 3915 O'NEAL LANE BATON ROUGE LA 70816 BENFIELD & CO., INC. PAT BENFIELD 159 ST. GEORGE ROAD SCHRIEVER LA 70395 BENGE, CODY RAY ADDRESS REDACTED BENITEZ OVANDO, JOSE DE JESUS ADDRESS REDACTED BENITEZ, NILSEN MARIA ADDRESS REDACTED BENN, TAEJUANE LAMONTA ADDRESS REDACTED BENNETT, BRANDON J ADDRESS REDACTED BENNETT, DANIEL HILTON ADDRESS REDACTED BENT MARINE PETREA RHODE 8001 AIRLINE DRIVE METAIRIE LA 70003 BENTLEY SYSTEMS INC GEORGINA MALDONADO PO BOX 828836 PHILADELPHIA PA 19182-8836 BENTSI ENCHILL LETSA ANKOMAH KOJO BENTSI ENCHILL 1ST FLOOR TEACHERS HALL COMPLEX EDUCATION LOOP ADABRAKA ACCRA GHANA GP 1632 SOUTH AFRICA BERMUDEZ, HENRY W ADDRESS REDACTED BERNAL, SARAH IRENE ADDRESS REDACTED BERNARD, JAMES KENNETH ADDRESS REDACTED BERNIE STEWART ADDRESS REDACTED BERUBE, BENJAMIN L ADDRESS REDACTED BESSEY, SAMUEL JAMES ADDRESS REDACTED BEST, OWEN MICHAEL ADDRESS REDACTED BETANZOS HIRALES, ALFREDO NIBARDO ADDRESS REDACTED BETBEZE, JUDITH GAUDREAU ADDRESS REDACTED BETEL EQUIPAMENTOS DE PROTECAO RICARDO LOPES R DOUTOR JOSE HIPOLITO, 1213 NOVA CIDADE RIO DE JANEIRO RJ 24804009 BRAZIL BFI WASTE SERVICES C/O REPUBLIC SERVICES 75 CURTIS ROAD LAWRENCEVILLE GA 30046 BFI WASTE SERVICES REPUBLIC SERVICES, C/O EXELA/TRANSCENTRA 1820 E SKY HARBOR CIRCLE SOUTH SUITE 150 PHOENIX AZ 85034 BIANCHINI GREVE LLC CRYSTAL GRESHAM 2901 NORTH I 10 SERVICE ROAD SUITE 300 METAIRIE LA 70002 BIEN, JEFFERY SCOTT ADDRESS REDACTED BIGGS, ANTONIO R. ADDRESS REDACTED BILLINGS, LAUREN A. ADDRESS REDACTED BILLIOT, BILLIE S ADDRESS REDACTED BILLOTTE, JAMES MICHAEL ADDRESS REDACTED BILLUPS, MICHAEL DON ADDRESS REDACTED BIOSFERA CONSULTORIA MARCELO MACIEL RUA OLIVEIRA FAUSTO, 17 BOTAFOGO RIO DE JANEIRO RJ 22.280-090 BRAZIL BIO-UV GROUP LISA BADANI 850 AVENUE LOUIS MEDARD LUNEL 34400 FRANCE BIRCH, TIMOTHY JAMES ADDRESS REDACTED BIRD, BRENT EDWARD ADDRESS REDACTED BISIO, CHRISTOPHER S ADDRESS REDACTED BISSOO, MICHEL ANAND ADDRESS REDACTED BIWER PAZ, FERNANDO ALFREDO ADDRESS REDACTED BLACKBURN & WHITNEY MD PS BARB H. 3001 SQUALICUM PKWY SUITE 5 BELLINGHAM WA BLACKLINE SYSTEMS INC LUCAS METZGER PO BOX 841433 DALLAS TX 75284-1433 BLAKE, ROBERT RICHARD ADDRESS REDACTED BLAKENEY, BARNEY M ADDRESS REDACTED BLANCHARD, LESLIE ADDRESS REDACTED BLANK ROME LLP TONY SALGADO ONE LOGAN SQUARE 130 N. 18TH STREET PHILADELPHIA PA 19103-6998 BLANTON, DOMINIC JARED ADDRESS REDACTED BLESSING, ERIN LOZES ADDRESS REDACTED BLUE ANGEL ANESTHESIA SERVICES CINDY 4600 NORTH DAVIS HIGHWAY PENSACOLA FL 32503 BLUEFIN OFFSHORE ENGINEERING ROBERT CHRISTOFF 2910 COMMERCIAL CENTER BLVD #103-220 KATY TX 77494 BLUEOCEAN LANGUAGES THAIS ELFAND AV FLAMBOYANTS DE PENINSULA 1020 APT RIO DE JANEIRO RJ 22776-070 BRAZIL BLUETIDE COMMUNICATIONS JEFF ROBERTSON 117 NOLAN ROAD BROUSSARD LA 70518 BLUEWATER RUBBER & GASKET CO CHRISTINE RODRIGUE P.O. DRAWER 190 HOUMA LA 70361-0190 BNA MARINE SERVICES, LLC. JAKE BREAUX PO BOX 150 MORGAN CITY LA 70381 BOA PARCERIA TRANSPORTES E SER SAMUEL MELO RUA ANTONIO CARLOS JOBIM, 257 MACAE MACAE RJ 27937-465 BRAZIL BOA PRACA IMPORTADORA E EXPORT MARCIA ALVES RUA SARGENTO AQUINO N 75 OLARIA RIO DE JANEIRO RJ BRAZIL ST VINCENT & TRINIDAD & BOARD OF INLAND REVENUE MRS. S. MILLET 1ST FLR ANSA MCAL BLDG INDE PS TOBAGO BOBBY KELLEY ADDRESS REDACTED BOBBY KELLEY C/O THE CARLSON LAW FIRM ADDRESS REDACTED BOBBY KING KELLY, JR. C/O REED MORGAN THE CARLSON LAW FIRM 100 E CENTRAL TEXAS EXPY KILLEEN TX 76541

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 8 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 11 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country BODDEN, HENRY L ADDRESS REDACTED BODDEN, JEREMY LOREN ADDRESS REDACTED BODDIE, DEANDRE SANCHEZ ADDRESS REDACTED BOERNE PHYSICAL THERAPY DR. DANNY KASPROWICZ DBA FYZICAL THERAPY AND BAL 1411 SOUTH MAIN #102 BOERNE TX 78006 BOESCH CONSTRUCTION INC RANDY BOESCH, OWNER PO BOX 603 COVINGTON LA 70434 BOHANNAN MEDICAL DIST INC KERI TARANTINO PO BOX 6146 CHAMPAIGN IL 61826 BOLD STRATEGIES LLC KYLE RUCKERT 1557 BRAME DRIVE BATON ROUGE LA 70808 BOLLINGER SHIPYARDS LLC RHONDA HEBERT DEPT # 2371 PO BOX 11407 BIRMINGHAM AL 35246-2371 C/O GORDON, ARATA, MONTGOMERY, BARNETT, ATTN: STEPHEN WILLIAMSON; BOLLINGER SHIPYARDS, INC. MCCOLLAM, DUPLANTIS, EAGAN, LLC KRISTINA LAGASSE 201 ST. CHARLES AVE 40TH FLOOR NEW ORLEANS LA 70170 BOLTON, CHRISTOPHER LINELL ADDRESS REDACTED BOLTON, THOMAS J ADDRESS REDACTED BONCKOWSKI, MARLON TYRICHO ADDRESS REDACTED VARDHEIVEIN 56 BONDURA TECHNOLOGY AS MARGUNN TJOTTA PO BOX 98 4349 BYRNE B 4349 NORWAY ATTN: KEITH MILKO ; DOMINIC BONDURANT PARTNERS, LP C/O BONDURANT MANAGEMENT LLC DEMICHINA 733 THIRD AVE, 15TH FLOOR NEW YORK NY 10017 BONVILLIAN, DENNIS J ADDRESS REDACTED BOOTHE, THAIS ADDRESS REDACTED BOOTS, TANNER DAVID ADDRESS REDACTED BOQUET, BOBBY J ADDRESS REDACTED BOSSARDET, ROBERT G ADDRESS REDACTED BOSTON COASTWISE PILOTS FRED LOOMIS 73 INGLESIDE AVENUE WINTHROP MA 02152 BOTAO, ANDERSON OLIVEIRA ADDRESS REDACTED BOUCHEREAU, MICHAEL P ADDRESS REDACTED BOUDREAUX, RICKY ALLEN ADDRESS REDACTED BOURG, LARRY J ADDRESS REDACTED BOURG, WAYNE JOSEPH ADDRESS REDACTED BOURGEOIS, ALEX DWIGHT ADDRESS REDACTED BOW 2 STERN/ESP SHANE THIBODEAUX 119 CAPITAL BLVD HOUMA LA 70360 BOWDEN, JOHN GILMORE ADDRESS REDACTED BOWDITCH MARINE INC MICHELLE ALMANZA PO BOX 17924 SEATTLE WA 98127 BOWEN MICLETTE & BRITT OF LOUISIANA LLC GINGER THOMAS 1100 POYDRAS STE 1250 NEW ORLEANS LA 70163 BOWERS, KACIE A ADDRESS REDACTED BOWLING, EDWARD MCDONALD ADDRESS REDACTED BOWMAN, SARAH RUTH ADDRESS REDACTED BOY SCOUTS OF AMERICA TORREY HAYDEN 4200 1-10 SERVICE RD, STE 101 METAIRIE LA 70001 BOYD, BRIAN JOSEPH ADDRESS REDACTED BR COMERCIAL IMPORTADORA E EXP MARIO JAMBO RUA SA E ALBUQUERQUE 350 MACEIO AL 57022180 BRAZIL BRADENHAM, JOHN G. ADDRESS REDACTED BRADESCO AUTO/RE COMPANHIA DE SEGUROS RUA BARAO DE ITAPAGIPE 225 PARTE RIO COMPRIDO RIO DE JANIERO RJ 20261-901 BRAZIL BRADESCO SAUDE S.A. JOSE CARLOS MATA RODRIGUES RUA: SAO JOSE N 90 GRUPO 1806 RIO DE JANEIRO RJ BRAZIL BRADESCO VIDA E PROVIDENCIA SA JOSE CARLOS MATA RODRIGUES RUA SAO JOSE, 90 -GRUPO 1806 RIO DE JANEIRO RJ 20010-020 BRAZIL BRADFORD, EDWARD B ADDRESS REDACTED BRADFORD, FLOYD JOHN ADDRESS REDACTED BRADLEY, CHARLETTE LOIS ADDRESS REDACTED BRADLEY, MIKEL LATEEF ADDRESS REDACTED BRADY, CHRISTOPHER R ADDRESS REDACTED BRADY, JOSEPH ANTHONY ADDRESS REDACTED BRAEMAR ENGINEERING ANNIE WITONO 2800 NORTH LOOP WEST SUITE 900 HOUSTON TX 77092 BRAGA, WELLITON SILVA ADDRESS REDACTED BRANCH, CHARLES L ADDRESS REDACTED BRANCH, JONATHAN P ADDRESS REDACTED BRANDAO, ISADORA BISPO ADDRESS REDACTED BRANDT, BRYAN ADDRESS REDACTED CIUDAD DEL BRANHER SA DE CV MAURICIO SOTO BRANSON CALLE 20 NO. 136 INTERIOR 102 CARMEN CAMPECHE 24100 MEXICO BRANNON, TUCKER WAYNE ADDRESS REDACTED BRANT, LANCE J ADDRESS REDACTED BRASCO LOGISTICA OFFSHORE LTDA MARCELL SOUZA RUA ENG FABIO GOULART 605 ILHA DA CONCEICAO NITEROI/RJ RJ 24050-090 BRAZIL BRASER DE MACAE SERVICOS LTDA GILBERTO PEREIRA DA SILVA RUA BELA VISTA 167 NOVO HORIZONTE MACAE RJ 27935 310 BRAZIL NOVO BRASIF S/A EXPORTACAO IMPORTAC MARCELO CARLOS AV. PREFEITO ARISTEU FERREIRA DA SILVA, 330 CAVALEIROS MACAE RJ 27930-070 BRAZIL NEIGHBOUR HOOD BAIRRO BRASIL FIRE PREVENTION SERVICE DANIELE MOREIRA SALVATAGEM LTDA ME RUA ARINDA NOGUIERA 190 NOVO BOTA MACAE RJ 27947 210 BRAZIL VIA 5 DISTRITO SAO JOAO DA BRASIL PORT LOGISTICA OFFSHORE PAULINO NOBREGA RUA FAZ SACO DANTAS PORTO DO ACU SN PROJATADA INDUSTRIAL BARRA RJ 282000-000 BRAZIL

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 9 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 12 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country BRASLECTRA LOCACOES JACY DE PAULA SANTOS FILHO RUA MARCO ANTONIO AGUIAR AZ MACAE RJ 27937-340 BRAZIL BRATEL SERVICOS DE TELEFONIA PAULO BELEM RUA MEXICO 21 S1 1001 CENTRO RIO DE JANEIRO RJ 20031 144 BRAZIL BRAZ, GILSON GERSON ALMEIDA ADDRESS REDACTED BRAZIL SAFETY SERVICE COMERCIO NADIMO NAKHLE AV PREFEITO ARISTEL FERREIRA DA SILVAN MACAE RJ 27930-070 BRAZIL BREAUX PETROLEUM PRODUCTS INC KAREN ADAMS PO BOX 54955 NEW ORLEANS LA 70154-4955 BREAZEALE, ANDREW W ADDRESS REDACTED BREG INC JOSE PEREZ ENRIQUEZ 2885 LOKER AVENUE EAST CARLSBAD CA 92010 BRIDGES, JONATHAN L ADDRESS REDACTED BRIDGESIDE MARINA INC. DODIE VEGAS 1618 LA HWY 1 GRAND ISLE LA 70358 BRIEN, MARK R ADDRESS REDACTED BRIG, MYKOLA ADDRESS REDACTED BRIGGS EQUIPMENT JUAN TREVINO - SUA RECIPIENT LOCK BOX 841272 DALLAS TX 75284-1272 BRINKMAN, COLTEN ROBERT ADDRESS REDACTED BRIONES CASTRO, IGNACIO MARTIN ADDRESS REDACTED BRISTER STEPHENS, INC. LORI TAYLOR PO BOX 8985 MANDEVILLE LA 70470-8985 BROADCAST TECHNICAL SERVICES LYNNEZ BACA PO BOX 40187 HOUSTON TX 77240-0187 BROADRIDGE ICS CLAIRE CAMPENELLA PO BOX 416423 BOSTON MA 02241-6423 BROCKHOEFT, SHELBY OHLSEN ADDRESS REDACTED BRODIE, FELIX ANGELES ADDRESS REDACTED BROOKS, CHEYENNE ELIZABETH ADDRESS REDACTED BROOKS, STEVEN L. ADDRESS REDACTED BROUSSARD, ANTHONY JOHN ADDRESS REDACTED BROUSSARD, JONATHAN SCOTT ADDRESS REDACTED FORT BROWARD COUNTY BOARD OF COMM MATHAI SKARIA 1850 ELLER DRIVE LAUDERDALE FL 33316 BROWARD COUNTY TAX COLLECTOR TAX COLLECTOR 1800 NW 66TH AVE SUITE 100 PLANTATION FL 33313-4523 BROWDER, BRIAN W ADDRESS REDACTED BROWN RUDNICK LLP ANDREAS P. ANDROMALOS ONE FINANCIAL CENTER BOSTON MA 02111 BROWN THOMAS LEE BROWN, ADRIENNE ELIZABETH ADDRESS REDACTED BROWN, ANDREW F ADDRESS REDACTED BROWN, ANTHONY D ADDRESS REDACTED BROWN, CHRISTOPHER STEVEN ADDRESS REDACTED BROWN, DENNIS M ADDRESS REDACTED BROWN, JOSEPH L ADDRESS REDACTED BROWN, PATRICK J ADDRESS REDACTED BROWN, SHAWN DOUGLAS ADDRESS REDACTED BROWNLEE MORROW CO INC ANDREA SHORES PO BOX 380008 BIRMINGHAM AL 35238-0008 BRUCE HUNT ADDRESS REDACTED BRUCE, GABRIEL ROBERT ADDRESS REDACTED BRUCE, JOSHUA WADE ADDRESS REDACTED BRUNE, RONALD S ADDRESS REDACTED BRUNEL ENERGY SERVICOS LTDA TIAGO FURTADO AVENIDA DAS AMERICAS 3.443, BLOCO 3, ALA A TIJUCA RJ 22.631-000 BRAZIL BRUNVOLL AS ANDERS ULVESTAD EIKREMSVINGEN 2 MOLDE 6422 NORWAY PORT SAINT BRUNVOLL PROPULSION USA INC ANNE AARSKOG PO BOX 881599 LUCIE FL 34988-0008 BRUNVOLL VOLDA AS ANNE AARSKOG PO BOX 205 HAMNEGATA 24 VOLDA N-6101 NORWAY BRYANT, DAVID L ADDRESS REDACTED BRYANT, GREGORY E ADDRESS REDACTED BRYANT, MELISSA HANNA ADDRESS REDACTED BRYANT, TIMOTHY H ADDRESS REDACTED BSH ASSESSORIA LINGUISTICA LIZANDRA DIAS AV DAS AMERICAS 3959 I 117 BARRA DA TIJUCA RJ BRAZIL BUCK, WOODROW THOMAS ADDRESS REDACTED BUCKINGHAM, SCOTT ALLEN ADDRESS REDACTED BUFFALO CLINIC PA 1700 HWY 25 N BUFFALO MN 55313 BUGETUL DE STAT 13 DIMITRIE GEROTA STREET DISTRICT 1 BUCHAREST RM ROMANIA ALTAMONTE BUHLER LAW FIRM PA MARK BUHLER 475 W LAKE BRANTLEY ROAD SPRINGS FL 32714 BUIEY, SIMMIE O ADDRESS REDACTED BULTMAN, DOUGLAS L ADDRESS REDACTED BUNGE STREET PROPERTIES LLC 217 N COLUMBIA ST COVINGTON LA 70433 BUNKER ONE COMBUSTIVEIS E LUB MARIANA LEITE FUTURO ATAULFO DE PALVA 341 RIO DE JANEIRO RJ 22440-032 BRAZIL BUNKER ONE USA INC MARIANA FUTURO 107 SAINT FRANCIS STREET SUITE 2370 MOBILE AL 36602 BUNTING, DAMON KANE ADDRESS REDACTED BURCHFIELD, LUIN P ADDRESS REDACTED BUREAU VERITAS MARINE, INC DEBBIE SANKEY PO BOX 74008704 CHICAGO IL 60674-8704 BUREAU VERITAS MEXICANA OCTAVIO BAUTISTA AV EJERCITO NACIONAL 418 MEXICO CITY DF 11570 MEXICO BURGESS, JUSTIN BOYD ADDRESS REDACTED BURGESS, ROMAN LEE ADDRESS REDACTED BURKE HANDLING SYSTEMS INC ROLANDA LANG PO BOX 97089 JACKSON MS 39288-7089

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country BURKE, JAMES FRANCIS ADDRESS REDACTED BURKE, ROBERT THOMAS ADDRESS REDACTED BURNETT, TOMMY FRANK ADDRESS REDACTED BURTHARDT, DANIELLE MARIE ADDRESS REDACTED BUSCH AND ASSOCIATES COURTNEY BUSCH 384 VOTERS ROAD SLIDELL LA 70461 BUSINESS HEALTH PARTNERS AMANDA FONTENOT 3649 SOUTH BEGLIS PARKWAY SULPHUR LA 70665 BUSINESS IMAGING SYSTEMS, INC. LARRY LOMBAS 13900 N. HARVEY AVE EDMOND OK 73013 BUSINESS LANGUAGES COURSE GUILLERMO GUIRLIDDO RUA PAULA FREITAS 19 SALA COPACABANA RJ 22.040-010 BRAZIL BUTLER, JACK ADDRESS REDACTED BUTLER, MATEO AARON ADDRESS REDACTED BUTLER, MELVIN C ADDRESS REDACTED BYRNE RICE & TURNER INC. NANCY THROWER 1172 CAMP STREET NEW ORLEANS LA 70130 ALVARO C46DF CORPORATIVO SC GUADALUPE SORIANO RICARDO CASTO NO 54-101 COL GUADALUPE INN OBREGON DF 1020 MEXICO CA SHEA & COMPANY, INC. C/O WESTERN SURETY COMPANY 6 MILL RIDGE LANE CHESTER NJ 07930-2486 CAAMAL PROMOTOR, ANGEL ENRIQUE ADDRESS REDACTED CABALLERO ESCALANTE, FRANCISCO JOSE ADDRESS REDACTED CABANILLAS HUERTA, CARLOS ALONSO ADDRESS REDACTED CABLES CADENAS Y BANDAS DE MARIELA PEREZ SALAZAR OLMO 205 COLONIA DEL BOSQUE TAMPICO TM 89318 MEXICO CABRERA RODRIGUEZ, CESAR AUGUSTO ADDRESS REDACTED CABRERA ZUNIGA, LUCIO MIGUEL ADDRESS REDACTED CADICK CORPORATION M A DILEO PO BOX 4955578 GARLAND TX 75049-5578 CAETANO, AMAURI ADDRESS REDACTED CAHU CONSULTORIA EMPRESARIAL FELIPE PESTANA AV RIO BRANCO N43 15 ANDAR PARTE CENTRO RIO DE JANEIRO RJ 20090 003 BRAZIL CAJUN CUTTERS LLC MITCH THIBODAUX-SUA RECIPIENT PO BOX 5041 HOUMA LA 70361-5041 CAJUN VALVE SERVICE LLC ROBIN GAFFORD 2122 E FLONACHER RD ZACHARY LA 70791-6908 CALAGNA, JOSEPH D ADDRESS REDACTED CALDERON PARDO, ANTONIO ANDRES ADDRESS REDACTED CALDWELL, IAN REID ADDRESS REDACTED CALDWELL, MIRANDA LYN ADDRESS REDACTED CALEBE FILTROS E LUBRIFICANTES CALEBE BATISTA AV FABIO FRANCO 832 VISCONDE DE ARAUJO MACAE RJ 27940 BRAZIL CALIXTO, EDVALDO DA SILVA ADDRESS REDACTED CALLAHAN, JAMES E ADDRESS REDACTED CALLAIS OFFICE SUPPLY SUE GROS 14402 WEST MAIN CUT OFF LA 70345 CALLAIS, HARRIS M. ADDRESS REDACTED CALLAN, COLETON R ADDRESS REDACTED CALLAND, ALBERT M ADDRESS REDACTED CALLAWAY, JAMES WILLARD ADDRESS REDACTED CALLEJAS DE LA PENA, ARALIA ADDRESS REDACTED CALLEJAS SANCHEZ, EDUARDO ADDRESS REDACTED CALLENBERG TECHNOLOGY AB TOMAS LUNDELL BOX 754 UDDEVALLA 451 26 SWEDEN CALNAN, JOHN FRANCIS ADDRESS REDACTED CALVIN C FAYARD JR CAROLYN MISTOLER ADDRESS REDACTED CAMARAO, CARLOS M ADDRESS REDACTED CAMARGO CABRERA, GIOVANNI ERNESTO ADDRESS REDACTED CAMERON AND SHEPHERD JOSEPHINE WHITEHEAD 2 AVENUE OF THE REPUBLIC PO BOX 10109 GEORGETOWN GUYANA CAMERON INT CORP, DRILLING SYS SASHA BROTHERTON PO BOX 730491 DALLAS TX 75373-0491 CAMPOS, DANIEL RENE ADDRESS REDACTED TRINIDAD & CAMQUIP ICS (TRINIDAD) ROBBY PLAISANCE PARK INDUSTRIAL ESTATE TOBAGO CANAL BARGE COMPANY, INC. ATTN: SPENCER MURPHY 835 UNION ST NEW ORLEANS LA 70112 CANAL BARGE COMPANY, INC. SPENCER MURPHY 835 UNION ST. NEW ORLEANS LA 70112 CANAVIEIRA, RODRIGO MORAIS ADDRESS REDACTED CANCIENNE, EVA REVELS ADDRESS REDACTED CANCINO DZUL, JOSE ADRIAN ADDRESS REDACTED CANGELOSI, JACKIE WALTERS ADDRESS REDACTED CANON FINANCIAL SERVICES CUSTOMER SERVICE 14904 COLLECTIONS CENTER DRIVE CHICAGO IL 60693 ATTN: SHELLY SKAUG; SONYA 2000 AVENUE OF THE STARS, 11TH CANYON BLUE CREDIT INVESTMENT FUND L.P. C/O CANYON CAPITAL ADVISORS, LLC NELSON FLOOR LOS ANGELES CA 90067 ATTN: SHELLY SKAUG; SONYA 2000 AVENUE OF THE STARS, 11TH CANYON-ASP FUND, LP C/O CANYON CAPITAL ADVISORS, LLC NELSON FLOOR LOS ANGELES CA 90067 CAPISTRANO, JAMES RAY ADDRESS REDACTED CAPITAL BEDDING COMPANY SCOTT GRAND PO BOX 1 BATON ROUGE LA 70821 CAPITAL ONE BANK (USA), N.A. C/O AMERICAN INFOSOURCE ATTN: ASHLEY BOSWELL PO BOX 71083 CHARLOTTE NC 28272-1083 CAPITAL ONE BANK (USA), N.A. C/O AMERICAN INFOSOURCE ATTN: ASHLEY BOSWELL 4515 N SANTA FE AVE OKLAHOMA CITY OK 73118 CAPITAL ONE NA 201 ST CHARLES AVE, 29TH FLOOR NEW ORLEANS LA 70170 CAPITAL ONE, NA J J PO BOX 61540 NEW ORLEANS LA 70161-1540 CAPITAL VALVE & FITTING CO LLC SUA RECIPIENT 9243 INTERLINE AVENUE BATON ROUGE LA 70809 CAPONE, JASON ROBERT ADDRESS REDACTED CAPORUSCIO, JESSICA M ADDRESS REDACTED

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country CAPPABIANCA, NICHOLAS D ADDRESS REDACTED CAPROCK COMUNICACOES DO BRASIL PAULA ALVES AVENIDA PREFEITO ARISTEU FERREIRA DA SILVA RIO DE JANEIRO RJ 2793070 BRAZIL CAPUTO MIRANDA, ALBERTO ENRIQUE ADDRESS REDACTED CAR SPECIALTY LLC RICHARD BROUSSARD 1008 AMES BROUSSARD ROAD BREAUX BRIDGE LA 70517 CARANZA, EDWARD ADDRESS REDACTED CARBOLINE COMPANY CHERIE PETIT - SUA RECEIPIENT PO BOX 931942 CLEVELAND OH 44193 CARDEN, RYAN H ADDRESS REDACTED CARDINAL CULINARY SERVICES LLC CHRISTINE SPARKS 5950 FM 517 RD ALVIN TX 77511 CARDIOLOGY CONSULTANTS LANDNESSA 1717 NORTH E. STREET SUITE 331 PENSACOLA FL 32501 CARDIOVASCULAR INSTITUTE OF KATHIE JO BOATNER PO BOX 4176 HOUMA LA 70361 CARDIOVASCULAR INT OF NW FL PO BOX 18379 PANAMA CITY FL 32417-8379 CARDONA DIAZ DE LEON, JOSE LUIS ADDRESS REDACTED CARDOSO, JORGE MAURICIO ADDRESS REDACTED CARDOSO, LUIS OCTAVIO PICCOLI ADDRESS REDACTED CAREER BUILDER.COM TIM JOHNSON 200 N. LASALLE CHICAGO IL 60601 CAREY, ANDAMO JUAN ADDRESS REDACTED CARIAZO, ALDRIN B ADDRESS REDACTED CHAGUARAM TRINIDAD & CARIBBEAN DOCKYARD & ENGINEERI BRIAN STONE PO BOX 2874, TT POST PORT CHAGUARAMAS AS TRINIDAD TT TOBAGO CARIBBEAN SURGERY INC SURENDRA PERSAUD MD 270 THOMAS STREET NORTH CUMMINGS GEORGETOWN GUYANA CARLILE TRANSPORTATION SYSTEMS SUSAN HESSLER PO BOX 84048 SEATTLE W A 98124-8448 CARLISLE & FINCH CO. TONI BRUMMETT 4562 WEST MITCHELL AVE CINCINNATI OH 45232 CARLISLE MEDICAL INC ALLISON SMITH 501 BOULEVARD PARK E MOBILE AL 36609 CARLOS DANIEL DE LA CRUZ JULIO ALBERTO DE LA CRUZ ADDRESS REDACTED CARLOS KNOX ADDRESS REDACTED CARLOS KNOX C/O SPAGNOLETTI LAW FIRM ADDRESS REDACTED CARLSON, ERIC CHRISTOPHER ADDRESS REDACTED CARMICHAELS CASHWAY PHARMACY HEATHER 1002 N. PARKERSON CROWLEY LA 70526 CARMONA RODRIGUEZ, JARED ALEXIS ADDRESS REDACTED CARMONA, JOHN LUIS ADDRESS REDACTED CARNEIRO, EURICO LAMEGO ADDRESS REDACTED CAROTTI, ANA P. ADDRESS REDACTED CAROUSEL INDUSTRIES OF NA NICOLE FINNERTY - SUA RECIPIEN PO BOX 842084 BOSTON MA 02284 CARPENTER, JOSHUA L ADDRESS REDACTED CARR, TERRY DALE ADDRESS REDACTED CARRANZA, JOSE GUILLERMO ADDRESS REDACTED CARRERA, SEBASTIAN M ADDRESS REDACTED CARRIBON, NIGEL GEOFFERY ADDRESS REDACTED CARRIER CORPORATION KRISTI COOK PO BOX 93844 CHICAGO IL 60673-3844 CARRION ARGUELLES, CARLOS ALBERTO ADDRESS REDACTED CARSOE US INC KENNETH OLSEN 1112 NW LEARY WAY SEATTLE WA 98107 CARTEE, JESSE N. ADDRESS REDACTED CARTER MACHINERY CO INC ROBIN FUNK PO BOX 751053 CHARLOTTE NC 28275-1053 CARTER, ROBERT CALVIN ADDRESS REDACTED CARTHAN, SAMUEL J ADDRESS REDACTED CARTORIO 2 OFICIO DE NOTAS ADRIANO MARINHO ESTRADA DOS BANDEIRANTES 209 LOJAS C/D RIO DE JANEIRO RJ 22710 570 BRAZIL CARVALHO HOSKEN ANDRE OLIVIERA ADDRESS REDACTED CARVALHO, LUIZA CAMPOS DE ADDRESS REDACTED CARVALHO, RAFAEL CAVALCANTE DE ADDRESS REDACTED CASA, NICHOLAS EUGENE ADDRESS REDACTED CASE EXPERTS, LLC SCOTT PARKER 2920 NORTH 7TH ST, STE C WEST MONROE LA 71291 CASE MANAGEMENT SOLUTIONS MELISSA WALLS, RN , CCM 48 TURNBURY DR BOSSIER CITY LA 71111 CASON, BRANT ALEXANDER ADDRESS REDACTED CASTILLO HIDALGO, SAMUEL ADDRESS REDACTED CASTILLO PEREZ, JUAN JOSE ADDRESS REDACTED CASTILLO RUBIO, DAVID SALVADOR ADDRESS REDACTED CASTILLO TORRES, LUIS ALEJANDRO ADDRESS REDACTED CASTLE, RONAGNICK WAYNE ADDRESS REDACTED CAUDILL, ALVIN ADDRESS REDACTED CAUDILL, TAYLOR CHRISTIAN ADDRESS REDACTED CAUSEY, CHRISTOPHER LEE ADDRESS REDACTED UNITED CAVENDISH GROUP INTL LTD ACCOUNTS RECEIVABLE PO BOX 11483 LONDON NW31JW KINGDOM CDF REFRIGERACAO LTDA ALMIR RUA SECRETARIO RUBENS FALCAO 3 VISCONDE DE ARAUJO MACAE RJ 27943 BRAZIL CDS CONSULTORIA NAVAL SAMUEL ZANDONADI RUA MIGUEL DE FRIAS NITEROI RJ 24220-008 BRAZIL CECOT, ANDRZEJ S ADDRESS REDACTED CED CONSOLIDATED ELECTRIC DIST SHARRON DORE PO BOX 207088 DALLAS TX 75320-7088 CEJA ZENDEJAS, ENRIQUE ADDRESS REDACTED CELIS ROJAS, ALFREDO ADDRESS REDACTED CELLCO PARTNERSHIP DBA VERIZON WIRELESS PAUL ADAMEC 500 TECHNOLOGY DRIVE WELDON SPRING MO 63304

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 12 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 15 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country CELLCO PARTNERSHIP DBA VERIZON WIRELESS WILLIAM VERMETTE 22001 LOUDOUN COUNTY PKWY ASHBURN VA 20147 CENAC TOWING CO., LLC ARLEN B. CENAC, JR. & ANDRE C. BROUSSARD, JR. 876 SCHOOL STREET HOUMA LA 70360 CENAC TOWING CO., LLC ARLEN B. CENAC, JR. & ANDRE C. BROUSSARD, JR. PO BOX 2617 HOUMA LA 70361 CENAC TOWING CO., LLC ATTN: ANDRE C BROUSSARD, JR. PO BOX 2617 HOUMA HI 70361 CENTELHA EQUIPAMENTOS ELETRICO ESTER - FINANCE ASST AV PROF ARISTEU FERREIRA DA SILVA 310 MACAE RJ 27903 070 BRAZIL CENTERPOINT MEDICAL CENTER PO BOX 409786 ATLANTA GA 30384 CENTRAL COOP RIO DE JANEIRO MONIQUE CURVAL RUA SENADOE ALENCAR 157 RIO DE JANEIRO RJ 20921-430 BRAZIL CENTRO DE INTEGRACAO EMPRESA SANDRA XAVIER RUA DA CONSTITUICAO, 67, CENTR RIO DE JANEIRO RJ BRAZIL CERON NOVELO, JOSE ANTONIO ADDRESS REDACTED UNITED CERTAIN UNDERWRITERS AT LLOYD’S C/O LLOYD'S OF LONDON 1 LIME STREET LONDON EC3M 7HA KINGDOM CERTEX USA INC CHRISTINA BREEZE PO BOX 201553 DALLAS TX 75320-1553 COMALCALC CESAR AUGUSTO RAMON ALMEIDA CESAR AGUSTO RAMON ALMEIDA CARRETERA ESTATAL COMALCALCO A JALPA KM 9 O TABASCO 86670 MEXICO CESAR, GOLDEN GRAY DUQUE ADDRESS REDACTED CETCO ENERGY SERVICES CO LLC ROBERTA GALLEGOS PO BOX 202172 DALLAS TX 75320-2172 CHABILLS TIRE SERVICE LLC DONNA FRYOU - SUA RECIPIENT PO BOX 2504 MORGAN CITY LA 70381 CHABLE ALVAREZ, ANGEL MARIO ADDRESS REDACTED CHABLE PEREZ, JUAN JOSE ADDRESS REDACTED CHABLE PEREZ, MIGUEL ISIDRO ADDRESS REDACTED CHABLE SANCHEZ, WILLIAM ADDRESS REDACTED CHADBOURNE, BRITTON ROBERT ADDRESS REDACTED CHADBURN, CHRISTOPHER ALAN ADDRESS REDACTED CHAFFE AND ASSOCIATES 103 NORTHPARK BLVD COVINGTON LA 70433 TRINIDAD & CHAIRMAN BOARD OF INLAND REVEN VAT ADMINISTRATION CENTRE POBOX 820 20 ST VINCENT ST PORT OF SPAIN TOBAGO CHAISSON, TAMMY G ADDRESS REDACTED CHALLENGER GRAY & CHRISTMAS LINDSAY GORMAN PO BOX 324 WINNETKA IL 60093 CHAMBERS INDUSTRIAL SUPPLY INC ROSALIE DESALVO 5608 SALMEN HARAHAN LA 70123 CHAMBERS, LARRY NEAL ADDRESS REDACTED CHAMBLISS, EUGENE H ADDRESS REDACTED CHAMMA, ISABELLA PESSANHA ADDRESS REDACTED CHAMPAGNE, RANDAL JOHN ADDRESS REDACTED CHAMPION TECHNOLOGY SERVICES MELESSA PEEL 11824 MARKET PLACE AVE BATON ROUGE LA 70816 CHAMPLIN, TIMOTHY LAWRENCE ADDRESS REDACTED CHAN, MAX ALEXIS ADDRESS REDACTED CHANDLER, BRIAN MITCHELL ADDRESS REDACTED CHANNELLE, RANESIA ANDREA ADDRESS REDACTED CHAPMAN, BRIAN WILLIAM ADDRESS REDACTED CHAPULA AZCORRA, SALVADOR ADDRESS REDACTED CHARLES, LASZLO ANWAR D A ADDRESS REDACTED CHARLESTON BRANCH PILOTS ASSOC BOB BENNETT PO BOX 179 CHARLESTON SC 29402 CHARRON, EMANUEL S ADDRESS REDACTED UNITED CHART SHIPPING (UK) LTD LAUREN ARANOWITZ SUITE G1/G5 PARK HOUSE NORTH STREET HORSHAM RH12 9SB KINGDOM UNITED CHARTCO RUTH WATSON DIGITAL HOUSE KEMPS QUAY QUAYSIDE ROAD SOUTHAMPTON HP SO 18 1AD KINGDOM CHASE, MADISON RALSTON ADDRESS REDACTED CHATERPAUL, NITIN RAVENDRA ADDRESS REDACTED CHAVEZ, CHRISTOPHER MICHAEL ADDRESS REDACTED CHEATWOOD, DEREK ANTHONY ADDRESS REDACTED CHEDDIE, DAVID ULRIC ADDRESS REDACTED CHEEK, ROBERT A ADDRESS REDACTED CHEER, TRAVIS MCKENZIE ADDRESS REDACTED CHEMETEC ENGINEERED EQUIPMENT RYAN CAMP 342 LAFAYETTE STREET SUITE A BATON ROUGE LA 70801 CHERAMIE, JAMIE P. ADDRESS REDACTED CHESAPEAKE MARINE TRAIN. INST. AMANDA SYMONDS PO BOX 1153 HAYES VA 23072 CHEVRON USA, INC REBECCA LEHR PO BOX 730348 DALLAS TX 75373-0348 CHICK-FIL-A RICHARD GONZALES 912 N. HWY. 190 COVINGTON LA 70433 CHIEF, ENFORCEMENT ASSESSMENT SECTION, U.S. EPA REGION 6 1445 ROSS AVE. SUITE 1200 (6SF-TE) DALLAS TX 75202-2733 CHILDREN'S HOSPITAL ANESTHESIA MAEGAN PO BOX 919211 DALLAS TX 75391-9211 CHILDS, DOUGLAS S ADDRESS REDACTED CHIN VAZQUEZ, DIEGO SANTIAGO ADDRESS REDACTED CHIN VAZQUEZ, JOSE LEONARDO DE JESUS ADDRESS REDACTED CHOI, ALEX ADDRESS REDACTED CHRIST EPISCOPAL SCHOOL JERRY HENSON 80 CHRISTWOOD BLVD COVINGTON LA 70433 CHRISTIANSEN, ALIDA LOU ADDRESS REDACTED CHRISTIANSEN, SCOTT F ADDRESS REDACTED CHRISTOFF, ROBERT PATRICK ADDRESS REDACTED

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country CHRISTOPHER WEST CHRISTOPHER WEST 1629 JACKSON ST MANDEVILLE LA 70448 CHRISTOPHER, CASIE DANIELLE ADDRESS REDACTED CHRISTUS HEALTH SOUTHEAST TEX SHANNON PO BOX 848060 DALLAS TX 75284-8060 CHRISTY M. COREY, PH.D. CHRISTY 2113 ADAMS STREET NEW ORLEANS LA 70118 CHUBB CUSTOM INSURANCE COMPANY 15 MOUNTAIN VIEW ROAD WARREN NJ 07059 CIUDAD DE CIUDAD DE CHUBB SEGUROS MEXICO SA JAVIER ANTONIO RAMIREZ CONDE PASEO DE LA REFORMA 250 TORRE PISO 15 COL JUAREZ, DEL MEXICO MEXICO CP 6600 MEXICO CHUBB SEGUROS SAUDE SA CRISTIANE GONCALVES RUA ALEXANDRE DUMAS 202 2 ANDAR SAO PAULO SAO PAULO SP 04717-910 BRAZIL CIGNA - LIFE INSURANCE COMPANY DARIA CABASSA LIFE INS CO OF NORTH AMERICA PO BOX 780110 PHILADELPHIA PA 19178-0110 CIGNA HEALTH AND LIFE INSURANCE COMPANY (EX PAT) ALYSSA RANDALL SAM CIGNA 13680 COLLECTION CENTER DRIVE CHICAGO IL 60693 CILSA DA MOTA DIAS CONFECCOES SHEILA DIAS AV EVALDO COSTA 945 SOL Y MAR MACAE RJ 27940 410 BRAZIL CINCO ZALAZAR, JULIO CESAR ADDRESS REDACTED CINTAS CORPORATION #541 KASSIE LEBLANC - SUA RECIP PO BOX 650838 DALLAS TX 75265-0838 CISNEROS RUIZ, OMAR ADDRESS REDACTED CIT BANK NA 75 N FAIR OAKS AVE PASADENA CA 91103 CIT NORTHBRIDGE NEAL LEGAN 11 WEST 42ND STREET NEW YORK NY 10036 CIT NORTHBRIDGE CREDIT, LLC 11 WEST 42ND STREET, 13TH FLOOR NEW YORK NY 10036 CITIGROUP FINANCIAL PRODUCTS INC. (NEW YORK, OPS 2 / NY) C/O CORPORATE ACTIONS ATTN: DAVID QUINN; BRIAN BOYLES 1 PENNS WAY FLOOR 2 NEW CASTLE DE 19720 CITY BLUEPRINT & SUPPLY CO. BOB MAHONEY - SUA RECIPIENT 1904 POYDRAS STREET NEW ORLEANS LA 70112 CITY ELECTRIC SUPPLY CUSTOMER SERVICE PO BOX 609521 ORLANDO FL 32860 CITY OF ALLEN 2777 N STEMMONS FREEWAY SUITE 1000 DALLAS TX 75207 CITY OF ALLEN C/O LINEBARGER GOGGAN BLAIR & SAMPSON, LLP ATTN: ELIZABETH WELLER 2777 N. STEMMONS FREEWAY SUITE 1000 DALLAS TX 75207 CJ'S ELECTRICAL SERVICE INC GREG MARIE 253 TRINITY LANE GRAY LA 70359 CK POWER JOHANNA GENTLE 1100 RESEARCH BLVD ST. LOUIS MO 63132 CK7 SERVICOS DE MANUTENCAO MIGUEL SIMAS RUA SANTA CLARA N 16 GALPAO BAIRRO PONTA D'AREIA NITEROI RIO DE JANEIRO RJ 24040-050 BRAZIL CLARK HILL PLLC ROCHELLE SMITH DBA CLARK HILL PLLC PO BOX 3760 PITTSBURGH PA 15230 CLARK, BRIAN W ADDRESS REDACTED CLARK, MATTHEW CONNOR ADDRESS REDACTED CLARKE, JAMES R ADDRESS REDACTED ABERDEEN UNITED CLARKSONS PLATOU (OFFSHORE) CAROLANNE MCGEOUGH 254 UNION STREET SCOTLAND AB10 1TN KINGDOM CENTRO, RIO DE CLARKSONS PLATOU BRASIL LTDA AV. RIO BRANCO, 89 SALA 1601 JANEIRO RJ 20040-004 BRAZIL CLARO SA MARCELO SANTOS RUA MENA BARRETO 42 BOTAFOGO RIO DE JANEIRO RJ 22271 100 BRAZIL CLAWITTER, YVONNE H ADDRESS REDACTED CLEAN TANK LLC CONNIE PLAISANCE 16201 EAST MAIN STREET CUT OFF LA 70345 CLEMENTE, MARCELO SANTOS ADDRESS REDACTED CLEMENTS, OSCAR ALPHONSO ADDRESS REDACTED CLEMMONS, LEONARDO CLIFFORD ADDRESS REDACTED CLIFTON, NIGEL ADDRESS REDACTED CLIPPER OIL ACCOUNTS RECEIVABLE 2040 HARBOR ISLAND DR STE 203 SAN DIEGO CA 92101 CLOSSON, LESTER MAYNARD ADDRESS REDACTED CLOUD CONSULTING PARTNERS, INC AMY GRUBB PMB 407 44489 TOWN CENTER WAY STE D PALM DESERT CA 92260-2789 CM LOPES DE OLIVERIA - ME ROLANDO LIMA RUA EVALDO COSTA 994 MACAE RJ BRAZIL COAST GUARD FOUNDATION CT JEAN BROWN 394 TAUGWONK ROAD STONINGTON CT 06378 COAST GUARD FOUNDATION FUND PO BOX 790 MORGAN CITY LA 70381 COASTAL DISTRIBUTORS INC. APRIL TRAHAN 211 VENTURE BLVD HOUMA LA 70360 COASTAL ELECTRIC SUPPLY DONNA BONVILLAIN PO BOX 7054 HOUMA LA 70361 COASTAL LINE HANDLING & PILOT JOHN MCCARTHY III PO BOX 15095 SAVANNAH GA 31416 COASTAL MARINE EQUIPMENT INC. WANDA NACAISE 20995 COASTAL PARKWAY GULFPORT MS 39503 COASTAL MEDSURG INC DBA COASTAL MEDSURG INC 604 BISHOP DRIVE VIRGINIA BEACH VA 23455-6544

COASTAL ORTHOPEDICS CONSULTING KIM TANNER DBA COASTAL ORTHOPEDICS CONSUL 1150 ROBERT BLVD SUITE 240 SLIDELL LA 70458 COASTAL PARTS SALES LLC WANDA NECAISE 20995 COASTAL PARKWAY GULFPORT MS 39503 COASTAL STATES FFST INC KIRSTEN GLYNN PO BOX 1293 AMELIA LA 70340 COASTAL WEATHER RESEARCH CTR PETE MCCARTY COASTAL WEATHER RESEARCH CTR 307 UNIVERSITY BLVD MOBILE AL 36688 COASTWIDE ELECTRIC INC. COURTNEY STONE PO BOX 2876 MORGAN CITY LA 70381-2876 COATS ROSE YALE RYMAN & LEE DORIS SHASTID 9 GREENWAY PLAZA SUITE 1100 HOUSTON TX 77046 COBASA CLAUBER BOM ASSESSORIA CONTABE RUA DO CEDR, 34 AROEIRA MACAE RIO DE JANEIRO RJ 27946-000 BRAZIL COBBINAH, BEN ADDRESS REDACTED COBOS AGUIRRE, JOSE FIDEL ADDRESS REDACTED COBOS OCAMPO, FIDEL ADDRESS REDACTED DENHAM COBURN SUPPLY COMPANY RICK NOLAND PO BOX 99001 SPRINGS LA 70727-9001 COCKETT DO BRAZIL LEO AZEVEDO RUA DO CARMO 57-6 ANDAR RIO DE JANEIRO RJ BRAZIL COCKFIELD, LAURA J ADDRESS REDACTED COCO, JARED L ADDRESS REDACTED COCO, TRAVIS R ADDRESS REDACTED

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country COHOON, CASEY W ADDRESS REDACTED COITE E MORENO COMERCIO AMERICO COITE JACAREPAGUA N 7655 SALA 511 FREGUESIA RIO DE JANEIRO 22.753-033 BRAZIL COKER, DAVID D ADDRESS REDACTED COLBY SERVICE AND SUPPLY JESSICA WILLIAMS 267 HORD STREET NEW ORLEANS LA 70123 COLE, BRIAN K ADDRESS REDACTED COLEMAN, COLTAN H ADDRESS REDACTED COLEMAN, JAMES ANDREW ADDRESS REDACTED COLLIER, MARCUS CHRISTOPHER ADDRESS REDACTED ATTN: PAUL LOPEZ, LARRY BOYD, COLLIN COUNTY TAX ASSESSOR/COLLECTOR C/O ABERNATHY, ROEDER, BOYD & HULLETT, P.C. EMILY HAHN 1700 REDBUD BLVD SUITE 300 MCKINNEY TX 75069 COLLINS, TYLER CRAIG ADDRESS REDACTED COLON, MARVIN G ADDRESS REDACTED COLONNA'S SHIPYARD, INC. SHERRY WHEATLEY PO BOX 890461 CHARLOTTE NC 28289-0461 COLUMBIA RIVER BAR PILOTS 100 16TH STREET ASTORIA OR 97103 COLUMBIA RIVER PILOTS SHEILA NUSSBAUM PO BOX 912528 DENVER CO 80291-2528 COMARDELLE, CRYSTAL J ADDRESS REDACTED CITY OF COMCAST BUSINESS PO BOX 60533 INDUSTRY CA 91716-0533 COMERCIAL OFFSHORE MACAE MERCIA SANTUCHI AV FABIO FRANCO 854 LOJA 3 MACAE RJ 27940 370 BRAZIL COMERCIAL TROYKA DE PARAFUSOS CLAUDIA NUNES RUA SANTANA 50 MACAE RJ 27910 090 BRAZIL COMERCIALIZADORA INDUSTRIAL INGRID FERNANDEZ JOSE ARENAS NO 14 COLONIA CENTRO MINATITLAN VE 96700 MEXICO DUQUE DE COMERCIO DE RECICLAGEM SAO ADALITON SARDINHA RUA BION N 26 BAIRRO CHACARA CAXIAS RIO DE JANEIRO RJ 25.231-140 BRAZIL COMMITTEE TO ELECT JUDGE CRAIN NICOLE LICARDI PO BOX 792222 NEW ORLEANS LA 70179 COMPANHIA DISTRIBUIDORA DE GAS GENERAL AV PEDRO II 68 SAO CRISTOVAO RIO DE JANEIRO RJ 20941 BRAZIL COMPASS WATER SOLUTIONS JADE TRIEU ATTN: LOCKBOX NUMBER 679020 1200 E CAMPBELL ROAD SUITE 108 RICHARDSON TX 75081 COMPLETE FILTER & SUPPLY DEBBIE PFIFFNER PO BOX 231169 HARAHAN LA 70183 COMPLETE MARINE KRISTY WILLIAMS PO BOX 1604 AMELIA LA 70340 COMPLETE OCCUPATIONAL JOEY HEALTH SERVICES LLC 13554 HWY 3235 LAROSE LA 70373 TRINIDAD & COMPREHENSIVE FACILITIES MGMT DAVID GHOURALAL 233 CEDAR HILL CLAXTON BAY TOBAGO COMPRESSED AIR SYSTEMS LLC ERICA WALSH PO BOX 73278 CLEVELAND OH 44193 COMPRESSORWORLD LLC ERICA LAFRANCE - SUA RECIPIENT 3 COLLINS AVE PLYMOUTH MA 02360 HIGHLANDS COMPUTERSHARE SHANNON GONZALES 8742 LUCENT BLVD, STE 225 RANCH CO 80129 COMPUTERSHARE INC JANIS MASON DEPT CH 16934 PALATINE IL 60055-9228 CON SERVICE SERVICOS GERAIS MORGANA TRAVESSA AUGUSTO DE ALMEIDA 44 SALA 201 RIO DE JANIERO RJ BRAZIL CONAGUA COLLECTIONS DEPT PEDRO SAINS DE BARANDA CONOLIA CAMPECHE 24014 MEXICO CONCEICAO, GILSON LEAL ADDRESS REDACTED CONCHA GUTIERREZ, JUAN JOSE ADDRESS REDACTED CONCORD TRANSPORTATION SERVICE SHANNON MACLACHLAN 3524 16TH STREET SUITE D METAIRIE LA 70002 CONCUR TECHNOLOGIES 214104 MARK MAGNER 62157 COLLECTIONS CENTER DRIVE CHICAGO IL 60693 CONCUR TECHNOLOGIES INC 18400 NORTH EAST UNION HILL RD REDMOND WA 98052 CONDE AREVALO, GABRIEL ELIAS ADDRESS REDACTED CONDITION ANALYZING CORPORATION 1637 RACE TRACK RD STE 136 SAINT JOHNS FL 32259-3264 CONIGLIO, STUART H ADDRESS REDACTED CONLON, PATRICK JOSEPH ADDRESS REDACTED CONNECTOR SPECIALISTS INC ANH PHAM 175 JAMES DR EAST ST ROSE LA 70087 CONRAD SHIPYARD LLC OPAL DUHE PO BOX 790 MORGAN CITY LA 70381 CONRAD, DALTON LEE ADDRESS REDACTED CONRAD, JOHN E ADDRESS REDACTED CONSILIUM MARINE US INC ERNA FLEISCHMANN 4370 OAKS ROAD, STE 721 FT LAUDERDALE FL 33314 CONSOLIDATED WATERWORKS CUSTOMER SERVICE PO BOX 630 HOUMA LA 70361-0630 CD DEL CARMEN CONSORCIO FERRETERO JOSEFINA OCTAVIA LORENZO CALLE 24 NO 40 COL CENTRO CAMP 24100 MEXICO CONSTALLATION AN EXEON COMPANY PO BOX 4911 HOUSTON TX 77210-4911 CONSTRUCCIONES E INMOBILIARIA EFRAIN LOPEZ OSORIO AV MADRID MANZANA 4 LOTE 9 RESIDENCIAL PARAISO TB 86605 MEXICO CONSTRUCCIONES MYSI SA DE CV LILIANA VELAZQUEZ PEREZ ANDADOR FELIPE CARRILO PUERTO NO 727, COL GANADERA ALTAMIRA TAMAULIPAS 89605 MEXICO COL CIUDAD DE CONSTRUCTORA E INMOBILIARIA AURA RUIZ AV CUMBRES DE ACULTZINGO 26 DEPTO 103 NARVARTE MEXICO 3020 MEXICO CIUDAD DEL CONSUMIBLES Y SERVICIOS DEL CA JUAN ZAMORA NICOLAS CALLE 47 NO 180 COLONIA HECTOR PEREZ MARTINEZ CARMEN CP MEXICO CONTE, NICHOLAS PATRICK ADDRESS REDACTED CONTROL RISKS GROUP LLC BRIAN NICKERSON PO BOX 406287 ATLANTA GA 30384 TRINIDAD & CONTROL TECHNOLOGIES LTD KENNY LUE CHEE LIP 221 UNION ROAD MARABELLA TOBAGO CONTROL WORX LLC ALISON WAGUESPACK DEPT. 159 PO BOX 4869 HOUSTON TX 77210-4869 CONTTMAF MARCIA CARVALHO AVENIDA PRESIDENTE VARGAS, 446 SALA 2205 RIO DE JANEIRO RJ 20071-000 BRAZIL CONVERGENCE TRAINING LLC LARYSSIA WILLIAMS - RECIPIENT 4890 W KENNEDY BLVD SUITE 300 TAMPA FL 33609 CONVERGEONE INC RYAN ATKINS NW 5806 PO BOX 1450 MINNEAPOLIS MN 55485 5806

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country CONWAY, EMILIE ISMER ADDRESS REDACTED CAYMAN CONYERS DILL & PEARMAN JOAN BOLTON PO BOX 2681 CRICKET SQUARE GRAND CAYMAN KY1-1111 ISLANDS CAYMAN CONYERS TRUST COMPANY (CAYMAN) GENE DACOSTA P.O. 2681 CRICKET SQUARE GRAND CAYMAN KY1-1111 ISLANDS COOGAN & COOGAN INC JERRY COOGAN 1590 W CAUSEWAY APPROACH STE 1 MANDEVILLE LA 70471 COOK CLAIMS SERVICES, INC. TIFFANY OWENS PO BOX 160461 MOBILE AL 36616 COOK, BRIAN M ADDRESS REDACTED COOK, EVAN SALVADOR ADDRESS REDACTED COOK, HOMER C ADDRESS REDACTED COOK, JOHN S ADDRESS REDACTED COOK, ROBERT RUTLEDGE ADDRESS REDACTED TRINIDAD & COOL CARIBBEAN LTD (TRINIDAD) JUSTIN SMART BUILDING #4 IBIS ACRES OFF BHAGOUTIC TRACE TOBAGO COOLANTS PLUS INC TONIA UNGER 2570 VAN HOOK AVE HAMILTON OH 45015 COOLIDGE EMERGENCY GROUP LLC TANYA TRASK PO BOX 731587 DALLAS TX 75373-1587 COOLIDGE PHYSICIAN SERVICES EVELYN MITCHELL PO BOX 2955, MSC999 SAN ANTONIO TX 78299-2955 COOPER, CHASE AUSTIN ADDRESS REDACTED COOPER, JEREMY C ADDRESS REDACTED COOPER, MASON DRAKE ADDRESS REDACTED COPIADORA CIDADE LTDA MARIO JOAO AV PAISAGISTA JOSE SILVA DE AZ EVEDO NETO 200 B1 09 LOJA 105 RIO DE JANIERO RJ 22775-056 BRAZIL COPUS, KEVIN CHRISTOPHER ADDRESS REDACTED COPY AND CAMERA TECHNOLOGIES KIM ROBICHAUX - SUA PO BOX 2067 LAFAYETTE LA 70502 CORAL MARINE SERVICES INC. JACKIE CHERAMIE PO BOX 3561 MORGAN CITY LA 70381 CORBETT, GERHARD ADDRESS REDACTED CORDLE, JOSHUA DALE ADDRESS REDACTED CORDOVA SANCHEZ, JONATAN ADDRESS REDACTED CORDOVA, REINER OSNAN ADDRESS REDACTED CORE INDUSTRIES, INC. ASHLEY DUEITT IMEL PO BOX 190339 MOBILE AL 36619 CORE RECRUITMENT LLC KATHY DOWLING PO BOX 470701 TULSA OK 74147-0701 CORELUBE EQUIPMENT RON CHISOLM 761 15TH STREET SW MEDICINE HAT ALBERTA T1A4W5 CANADA CORMIER, BRIAN DANA ADDRESS REDACTED CORONADO NIEVES, FELIPE ALEJANDRO ADDRESS REDACTED CORP DEL FONDO DEL SEGURO PO BOX 42006 SAN JUAN PR 00940-2006 PUERTO RICO CORPENING, MICHAEL T ADDRESS REDACTED CORPORATE GRAY JUNE ADELSBERGER-SUA RECIPIENT PO BOX 342 FAIRFAX STATION VA 22039-0342 CORPORATE TRAVEL MANAGEMENT NA ROBYN ABERNATHY 1999 BROADWAY STE 3550 DENVER CO 80202-5750 CORPUS CHRISTI INTERNATIONAL ACCT REC - SHARON EMERSON 1501 MESQUITE CORPUS CHRISTI TX 78401-1117 CORPUZ, JIMMY D ADDRESS REDACTED CORRAL OSUNA, DAVID ADDRESS REDACTED CORREA, SIDARTHA ADDRESS REDACTED CORREA-FERNANDEZ, FERNANDO ADOLFO ADDRESS REDACTED CORROSION SHARED SERVICES ESTHER VAN DER GRAAF PO BOX 47 MOERKAPELLE NL2750 NETHERLANDS CORSON, RYLEY LOUIS ADDRESS REDACTED BOSQUES DEL CORTINA TAGLE ISOARD Y CIA SC MIGUEL ANGEL VEGA MANCILLA BOSQUE DE CIRUELOS 180 PISO PRINCIPAL LAS LOMAS 11700 MEXICO CORVEL CORPORATION STEPHEN A RODRIGUEZ PO BOX 203750 DALLAS TX 75320-2158 COSTA, EMILSON DA ADDRESS REDACTED COSTA, GERSON DA ADDRESS REDACTED COSTA, LUCAS SOUSA ADDRESS REDACTED CANCUN BENITO COTER SA DE CV FRANCISCO JAVIER MIS KU CALLE COCO MANZANA 9 LOTE 11 SUPERMANZANA 25 JUAREZ QUINTANA 24170 MEXICO COTIMA COMERCIO DE TINTAS LUIS CLAUDIO VIANA MATTOS AVENIDA RUI BARBOSA 1260- CENTRO MACAE RJ 27910-361 BRAZIL COURTNEY B. RAMSAY 309 LA RUE FRANCE SUITE 101 LAFAYETTE LA 70508 COURTYARD BY MARRIOTT KELLY JANSSEN PO BOX 741574 ATLANTA GA 30374-1574 COUSINS GREENWAY EIGHT LLC COUSINS PROPERTIES INCORPORATED COX, CONNER AUSTIN ADDRESS REDACTED COZEN O'CONNOR COZEN O'CONNOR 7885 PO BOX 7427 PHILADELPHIA PA 19170-7885 C-PORT 2, LLC DIONNE CHOUEST AUSTIN 16201 E MAIN ST CUT OFF LA 70345 C-PORT/STONE LLC LEA BRUCE DEPT. 211 PO BOX 4869 HOUSTON TX 77210-4869 CRAIG, KEVIN JOHN ADDRESS REDACTED CRANATA, ALEXANDREA PAGE ADDRESS REDACTED CRANE, ASHLEY MARIE ADDRESS REDACTED CRANESMART SYSTEMS INC KAREN STONE 4908 - 97 STREET NW EDMONTON AB T6E 5S1 CANADA CRANMER, FRANK WILSON ADDRESS REDACTED CRAWFORD, DAVID P. ADDRESS REDACTED CRAWLEY, SANDRA K ADDRESS REDACTED

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 16 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 19 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country MOLINO DEL CIUDAD DE CREEL GARCIA-CUELLAR VERONICA TREJO TORRE VIRREYES PEDREGAL 24, PISO 24 REY, MEXICO 11040 MEXICO CRESCENT CITY PHYSICIANS INC PO BOX 919168 DALLAS TX 75391-9168 CRESCENT CITY SURGICAL CENTRE STACY 3017 GALERIA DRIVE METAIRIE LA 70001 CRESCENT CROWN GREENWAY PLAZA SPV LLC PO BOX 846293 DALLAS TX 75284-6293 CRESCENT CROWN GREENWAY PLAZA SPV LLC ATTN: LEGAL DEPARTMENT 777 MAIN STREET, SUITE 2000 FORT WORTH TX 76102 CRESCENT CROWN GREENWAY PLAZA SPV LLC ATTN: MANAGING DIRECTOR, ASSET MANAGEMENT NINE GREENWAY PLAZA, SUITE 3040 HOUSTON TX 77046 ATTN: VICE PRESENT, PROPERTY MANAGEMENT, CRESCENT REAL ESTATE EQUITIES, LLC GREENWAY PLAZA NINE GREENWAY PLAZA, SUITE 650 HOUSTON TX 77046 CRESCENT RIVER PORT PILOTS SANDRA WHITE 8712 HWY 23 BELLE CHASSE LA 70037 CRESPI, MARK A ADDRESS REDACTED CRESSEY, AUSTIN JAY ADDRESS REDACTED CRESSOINE, WESLEY J ADDRESS REDACTED CRETTET, AMANDA ADRAGNA ADDRESS REDACTED CRIM, RUSSELL THOMPSON ADDRESS REDACTED CRISTIAN ARTURO HERNANDEZ RAMO JESUS CABRERA LOPEZ ADDRESS REDACTED CROCHET, ALAN WADE ADDRESS REDACTED CROCKETT, MICHELLE FREY ADDRESS REDACTED GOLDEN CROSBY TUGS, LLC TAMI BREAUX PO BOX 279 MEADOW LA 70357 CROSS RENTALS INC (CCL) CROWLEY, MICHAEL CHRISTOPHER ADDRESS REDACTED CRUMLEY, WILLIAM VINCENT ADDRESS REDACTED CRUZ ANGUIANO, FROYLAN HERB ADDRESS REDACTED CRUZ APARICIO, JESUS ENRIQUE ADDRESS REDACTED CRUZ HERNANDEZ, JAVIER ADDRESS REDACTED CRUZ PEREZ, BAUDILIO DE LA ADDRESS REDACTED CRUZ ZUNIGA, PETRONA GUADALUPE ADDRESS REDACTED CRUZ, ANTENOR SOARES DA ADDRESS REDACTED CRUZ, CAMILO DE LELES MACHADO ADDRESS REDACTED CSC CORPORATE SERVICE COMPANY SYLVIA WHITE PO BOX 13397 PHILADELPHIA PA 19101-3397 CSI SUPPLY INC CARY KOEDYKER 337 W 35TH ST STE M NATIONAL CITY CA 91950-7918 CSR CONSULTORIA E ENGENHARIA L RICARDO ANDRADE AV RIO BRANCO 25 CENTRO RIO DE JANERIO RJ 20090-003 BRAZIL CTD LEGACY, LLC C/O JACKSON & JACKSON, PLLC ATTN: RONALD JOSEPH SAVOIE 111 FOUNDERS DRIVE SUITE 400 BATON ROUGE LA 70809 CTE CONSULTORIA TEC ESPECIAL PAULA GONCALVES FIDALGO CORIA RUA DR LUIZ BELLEGARD 199/202 MACAE RJ 27913-260 BRAZIL CUDJOE, JOHN ROY CLIVER ADDRESS REDACTED CUENTAS COLLADO, FERNANDO ADDRESS REDACTED CULIVER, CONNOR CHRISTIAN ADDRESS REDACTED CULLEN, NICHOLAS RAYMOND ADDRESS REDACTED CULLIIGAN WATER SERVICES KATIE KEMP PO BOX 1618 KINGSLAND GA 31548 CULP, BRANDON P ADDRESS REDACTED CULP, PATRICK J. ADDRESS REDACTED CUMMINGS, PAUL ANDREW ADDRESS REDACTED CUMMINS SALES AND SERVICE CHARLENE SEWARD PO BOX 842316 DALLAS TX 75284 CUNNINGHAM, JOSEPH E ADDRESS REDACTED CUPIL JIMENEZ, CARLOS FELIPE ADDRESS REDACTED CUPIL REYES, PEDRO PASCUAL ADDRESS REDACTED CUROLE, SHANNON MICHAEL ADDRESS REDACTED CURRIE JOHNSON AND MYERS PA ANGIE GORDON PO BOX 750 JACKSON MS 39205 CURRIER & ROSER, INC. CHERYL BROWN PO BOX 14790 HOUSTON TX 77221-4790 CURRY, BRIGETTE YADIRA ADDRESS REDACTED CURRY, HUNTER SHANE ADDRESS REDACTED UNITED CURTIS DAVIS GARRARD, LLP. WILLIAM CECIL 29 LUDGATE HILL LONDON UK EC4M-7JR KINGDOM CUSHING, STEPHEN M ADDRESS REDACTED CUYTUN PECH, LUIS MANUEL ADDRESS REDACTED CWS CORPORATE HOUSING MISTY MASSEY - SUA RECIPIENT DBA CWS CORPORATE HOUSING 106 E OLD SETTLERS BLVD ROUND ROCK TX 78664 COATZACOA CYCSIM SA DE CV DALIA MANUELA MARTINEZ QUETZALCOATL #134 COLONIA TRANSPORTISTAS LCOS VERACRUZ 96536 MEXICO CYSTIC FIBROSIS FOUNDATION ALAN FREY 4630 S CARROLLTON AVE NEW ORLEANS LA 70119-6025 D AND B MARINE LLC DAVID BARRAS PO BOX 483 BROUSSARD LA 70518 D E FRICK INC DANIEL FRICK PO BOX 55550 METAIRIE LA 70055 TRINIDAD & D RAMPERSAD AND CO LTD REGAN 36-52 CHAN RAMLAL STREET CHAGUANAS TOBAGO D&B PO BOX 75434 CHICAGO IL 60675-5434 D&P MARINE SERVICE SA DE CV CARSTEN POULSEN CRISTALERIA ORIENTE 1125 MONTERREY N.L. 64520 MEXICO DA CONCEICAO, JESSICA OLIVEIRA FARIAS ADDRESS REDACTED DA SILVA JUNIOR, REGINALDO BASILIO ADDRESS REDACTED DA SILVA, AUGUSTO BERNADINO ADDRESS REDACTED DA SILVA, IGOR SANTANA ADDRESS REDACTED

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country DA SILVA, ROGERIO GOMES ADDRESS REDACTED DAIGLE FISSE & KESSENICH PATTY VICKERS PO BOX 5350 COVINGTON LA 70434-5350 DAIGLE, GARY ALAN ADDRESS REDACTED DAIGLE, JOSEPH R ADDRESS REDACTED DAIGLE, TRISH E ADDRESS REDACTED DALEY, PHILIP J ADDRESS REDACTED THE DAMEN MARINE COMPONENTS NEUSSEN, FINANCE CONTROLLER NIJVERHEIDSSTRAAT 5 3371 XE HARDINXVELD-GIESSENDAM NETHERLANDS NETHERLANDS DAMMERS BUILDING, KAYA NERTHERLANDS DAMMERS SHIPAGENCIES INC MINA HODGE FLAMBOYAN 11 PO BOX 3018 WILLEMSTAD CURACAO ANTILLES DANA SAC USA INC (FKA BREVINI) JEFF SANDERS 14141 W BREVINI DRIVE YORKTOWN IN 47396 DANFOSS LLC JOE SITZLER 7040 INTERNATIONAL DRIVE LOUISVILLE KY 40258 DANG, DUNG VAN ADDRESS REDACTED DANIEL BALSAMO ADDRESS REDACTED DANIELS, MICHAEL ANDREW ADDRESS REDACTED DANOS LLC PO BOX 62600 DEPT. 1382 NEW ORLEANS LA 70162-2660 DAPKUS, MATTHEW L ADDRESS REDACTED D'ARCOURT, DON H ADDRESS REDACTED DARRELL R JACKSON INSPECTION & DARRELL R JACKSON 8450 BOYD LANE SATSUMA AL 36572 DATABRAS INFORMATICA LTDA LUIZ ALBERTO LEMES RUA DA CONCEICAO 105 15 ANDAR RIO DE JANEIRO RJ 20051001 BRAZIL DATREX INC PAUL KLUMPP PO BOX 1537 KINDER LA 70648-1537 DATTE EDUCATION AND TRAINING GRAZIELLE C. SILVA RUA SERGIPE, 625-CONJ 301/307 FUNCIONARIOS BELO HORIZONTE MG 30130-170 BRAZIL DAVID A. DADETTA ADDRESS REDACTED DAVID A. TRICE ADDRESS REDACTED DAVID CAIN MD THERESA 1701 N MCKENZIE ST FOLEY AL 36535 DAVID FREEMAN MARINE CONSULT DAVID FREEMAN 99 LEE STREET FRANKLIN LA 70538 ADRAILDO PEREIRA DA SILVA FILHO, MARCIO DE DAVID GRACIANO LIMA ALMEIDA CAMARGO ADDRESS REDACTED AV. FRANKLIN ROOSEVELT, 194, SALA DAVID GRACIANO LIMA ATTN: ADRAILDO PEREIRA DA SILVA FILHO 303, CENTRO – RJ CEP 20021-120 BRAZIL DAVID KUIST MARINE CONSULTANT DAVE KUIST 2297 CAMEL MESA DR LAUGHLIN NV 89029 DAVID L. NICHOLS DAVID NICHOLS ADDRESS REDACTED DAVID MRAZ ADDRESS REDACTED DAVID VITTER FOR LOUISIANA COURTNEY GUASTELLA 2900 CLEARVIEW PKWY SUITE 206 METAIRIE LA 70006 DAVID W AIKEN MD INC DAVID AIKEN 4224 HOUMA BLVD SUITE 650 METAIRIE LA 70006 DAVIDSON, MALCOLM S ADDRESS REDACTED DAVIDSON, MARILYN F. ADDRESS REDACTED DAVIDSON, MELVIN ADDRESS REDACTED DAVILA RIVERA, FRANCISCO ANTONIO ADDRESS REDACTED DAVIS III, TYRON FRANK ADDRESS REDACTED DAVIS POLK & WARDWELL LLP ABE JANOER 450 LEXINGTON AVE NEW YORK NY 10017 DAVIS, BRANDON K ADDRESS REDACTED DAVIS, CHRISTOPHER LADEL ADDRESS REDACTED DAVIS, DEVIN TYLER ADDRESS REDACTED DAVIS, ELLIOT G ADDRESS REDACTED DAVIS, ERICA JEAN ADDRESS REDACTED DAVIS, FELICIA MAXINE ADDRESS REDACTED DAVIS, GEOFFREY N. ADDRESS REDACTED DAVIS, JONATHAN MITCHELL ADDRESS REDACTED DAVIS, KANE ANDREW ADDRESS REDACTED DAVIS, NICHOLAS FRANK ADDRESS REDACTED DAVIS, ROBERT P. PAYTON ADDRESS REDACTED DAVIS, ROBERT T. TIMOTHY ADDRESS REDACTED DAVIS, STEVEN A ADDRESS REDACTED DAWLEY, KEVIN JOHN ADDRESS REDACTED DAY, KAREN B ADDRESS REDACTED DC INVESTIGATIONS DUSTIN COOK PO BOX 488 DAPHNE AL 36526 SANTO DC-AR IMPORT-EXPORT PATRICIA BRITO RUA ANTONIO LOBO 86-VILA ANDRE SAO PAOLO SP 09060-680 BRAZIL DCS VISA SOLUTIONS 2909 HILLCROFT STREET SUITE 513 HOUSTON TX 77057 DE LA CRUZ DE LA ROSA, LUIS ALBERTO ADDRESS REDACTED VILLAHERMOSA DE LA CRUZ GALICIA OTILIO PROLONGACION PASEO USUMACINTA 2085 TAB 86035 MEXICO DE LA CRUZ MIRANDA, JULIAN JESUS ADDRESS REDACTED DE LA CRUZ SANCHEZ, PEDRO ADDRESS REDACTED DE LA HERRAN ZAMBADA, PAUL ANDRES ADDRESS REDACTED DE LA ROSA ALONSO, EDGAR EDUARDO ADDRESS REDACTED DE LA ROSA CALLEJA, ISIDRO ADDRESS REDACTED DE LA ROSA RAMIREZ, JESUS MANUEL ADDRESS REDACTED DE LIMA, MARCOS MARTINS ADDRESS REDACTED

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country DE LOS SANTOS CHABLE, CECILIO ADDRESS REDACTED DE LOS SANTOS SUAREZ, JUAN FRANCISCO ADDRESS REDACTED DE OLIVEIRA, MARIANA TERAN ADDRESS REDACTED DE PAULA, RAFAEL VENANCIO ADDRESS REDACTED DE SOUZA, JEROME ANTHONY ADDRESS REDACTED DEBRA A COLBERT DEBRA COLBERT ADDRESS REDACTED DECATUR RUBBER AND GASKET CO AR - SUA RECIPIENT 754 MCENTIRE LANE SW DECATUR AL 35601 DEEGAN, PATRICK CECIL ADDRESS REDACTED DEEN, JAMES A ADDRESS REDACTED DEEP SOUTH MARINE SPECIALTIES MINDY BOUDREAUX 2406 DENLEY ROAD HOUMA LA 70363 DEEPWATER RENTAL & SUPPLY LISA 2806 SOUTHWEST DR NEW IBERIA LA 70560 DEERFIELD HOLDINGS CORPORATION DBA DUFF AND PHELPS LLC PATRICK PUZZUOLI 55 E 52ND STREET 31ST FLOOR NEW YORK NY 10055 DEIF INC ANKE 185 HANSEN CT STE 125 WOOD DALE IL 60191-1105 DELAGE, GERALD P ADDRESS REDACTED DELAWARE DEPARTMENT OF JUSTICE CARVEL STATE OFFICE BUILDING 820 N FRENCH STREET WILMINGTON DE 19801 DELAWARE SECRETARY OF STATE DIVISION OF CORPORATIONS ATTN: STATE OF DELAWARE DIVISION OF CORPORATIONS PO BOX 5509 BINGHAMTON NY 13920-5509 DELFIN USCANGA, OSWHIN ERASMO ADDRESS REDACTED DELGADO DEL ANGEL, HECTOR ADDRESS REDACTED DELGADO DIAZ, JAIRO ADDRESS REDACTED DELGADO RUVALCABA, CARLOS ALBERTO ADDRESS REDACTED DELGADO TASCON, JUAN GABRIEL ADDRESS REDACTED RIO GRANDE DO DELL COMPUTADORES DO BRASIL ALINE CARVALHO AV INDUSTRIAL BELGRAF 400 BAIRRO INDUSTRIAL SOL RJ 92990-000 BRAZIL DELL COMPUTERS PO BOX 534118 ATLANTA GA 30353-4118 DELL FINANCIAL SERVICES LLC SCOTT SABO PO BOX 5292 CAROL STREAM IL 60197-5292 DELMAR SYSTEMS INC ANETHRA SINEGALL PO BOX 129 BROUSSARD LA 70518 DELOITTE TAX LLP PO BOX 844736 DALLAS TX 75284-4736 DELTA DENTAL INSURANCE CO ANGELA EDMONSTON 100 FIRST STREET SAN FRANCISCO CA 94105 DELTA DIAGNOSTICS LLC PO BOX 8430 METAIRIE LA 70011-8430 DENHAM DELTA LABORATORY TRAINING LLC LAMAR LABAUVE 10703 LINDSAY LANE SPRINGS LA 70726 DELTA LAUNCH SERVICES KATHY PENTON 3813 N. CAUSEWAY BLVD. METAIRIE LA 70002 DELTA SOUTH ANESTHESIA LISA BOUDREAUX PO BOX 15239 BATON ROUGE LA 70895-5239 DELTA SUBSEA LLC CAROLE HLOZEK 550 CLUB DRIVE SUITE 345 MONTGOMERY TX 77316 DELTORTO, JOSEPH ANTHONY ADDRESS REDACTED 12 FINSBURY UNITED DENHOLM COATES AND CO LTD CHRIS BECKETT 8TH FLOOR THE ASPECT SQUARE LONDON EC2A 1AS KINGDOM DENNARD LASCAR ASSOCIATES LLC DONNA WASHBURN 1800 WEST LOOP SOUTH #200 HOUSTON TX 77027 DENNIS, JASON K ADDRESS REDACTED DENNIS, JOSIAH THOMAS ADDRESS REDACTED DENTON, RUTH ANN ADDRESS REDACTED DEPARTMENT OF HOMELAND SECURITY US CUSTOMS & BORDER PATROL 10 CAUSEWAY ST SUITE 623 BOSTON MA 02222 DEPARTMENT OF TREASURY INTERNAL REVENUE SERVICE OGDEN UT 84201-0012 DEPT OF HOMELAND SECURITY STEPHEN LEONARDO FPF OFFICER US CUSTOMS & BORDER PATROL 10 CAUSEWAY ST SUITE 623 BOSTON MA 02222 DERECKTOR SHIPYARDS LORI BESTERCY-PASSOS 837 SEAVIEW AVE BRIDGEPORT CT 06607-1607 DERIGGI, MICHAEL JACOB ADDRESS REDACTED DESCIOLI & ASSOCIATES LLC TOM DESCIOLI 5911 BALLINA CANYON LANE HOUSTON TX 77041 DESHLER, JON S ADDRESS REDACTED DESHOTEL, JAMES WILBERT ADDRESS REDACTED DESIDERIO, RENEE ELIZABETH ADDRESS REDACTED DESIGN PRECAST AND PIPE INC JELENA STOLZ PO BOX 2401 GULFPORT MS 39505 DESONIA, STANLEY ARTHUR ADDRESS REDACTED DET NORSKE VERITAS (USA) INC MARY BATY - SUA RECIPIENT PO BOX 934917 ATLANTA GA 31193-4917 DET NORSKE VERITAS B V PO BOX 9599 ROTTERDAM 3007 AN NORWAY DET NORSKE VERITAS HOLDING SANDY JONES PO BOX 934927 ATLANTA GA 31193-4927 DELEGACION BENITO CIUDAD DE DET NORSKE VERITAS MEXICO GUSTAVO GODINEZ AV INSURGENTES SUR NO. 859 PISO 7 COL JUAREZ MEXICO 3810 MEXICO DETRAN ESTADO DO RIO DE JANEIR AVENIDA PRESIDENTE VARGAS 817 CENTRO RIO DE JANEIRO RJ BRAZIL CENTRO RIO DE DETRAN ESTADO DO RIO DE JANEIRO AVENIDA PRESIDENTE VARGAS 817 JANEIRO RJ BRAZIL NORTH DETYENS SHIPYARD INCORPORATED MEAGAN BROWN 1670 DRYDOCK AVE, BLDG 236 CHARLESTON SC 29405 DHL EXPRESS (USA) INC. 16592 COLLECTIONS CENTER DR CHICAGO IL 60693 DELEGACION DHL EXPRESS MEXICO AGUSTIN MORA AV FUERZA AEREA MEXICANA NO 540 COL FEDERAL VENUSTIANO CARRANZA MEXICO DIAGNOSTIC IMAGING SERVICES ESTHER INZINNA 4241 VETERANS BLVD SUITE 201 METAIRIE LA 70006 DIAGNOSTIC REFERNCE GROUP, LLC NATALYA STAROSTENKO PO BOX 589 SOUDERTON PA 18964-0589

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country 3 ILHA DA DIALCAR ESTALEIRO E SERVICOS BRUNO BRAGA RUA DELEGADO WALDIR GUILHERME CONCEICAO NITEROI RJ 24050-170 BRAZIL DIAMOND OFFSHORE DRILLING, INC. C/O PRIME CLERK LLC 850 3RD AVENUE, SUITE 412 BROOKLYN NY 11232 DIAS ALMEIDA, ROSYTA ADDRESS REDACTED DIAZ CHABLE, CENOBIO ADDRESS REDACTED DIAZ ESQUIVEL, VLADIMIR ADDRESS REDACTED DIAZ LIZARRAGA, BRYAN MISAEL ADDRESS REDACTED DIAZ LOPEZ, MARCO ANTONIO ADDRESS REDACTED DIAZ MONTIEL, CARLOS ADDRESS REDACTED DIAZ MONTIEL, VICTOR MANUEL ADDRESS REDACTED DIAZ SANCHEZ, MIGUEL ANGEL ADDRESS REDACTED DIAZ VILLA, MANUEL ADOLFO ADDRESS REDACTED DIAZ, ANDRES ADDRESS REDACTED DIBENEDETTO, JOHN A ADDRESS REDACTED DICKERSON, CHASSE JAMARLON ADDRESS REDACTED DICKERT, RYAN REDMOND ADDRESS REDACTED DIDIER CONSULTANTS INC ERIN PAILLE 1575 CHURCH ST BUILDING 3 ZACHARY LA 70791 DIESEL LINE CAMBUI LTDA ROBERTO AZEVEDO DE SOUSA RUA GOVERNADOR AGAMENON MAGALHAES 209 GALPAO LOTE 4481 SAO GONCALO RJ 24.465-620 BRAZIL CIUDAD DEL DIESEL REFACCIONES ORLANDO JUAREZ LARA AV ADOLFO LOPEZ MATEOS NO 229 COL PUERTO PESQUERO CARMEN CAMPECHE 24129 MEXICO DIEUTTO, BRANDY ANN ADDRESS REDACTED DIGBY, KEVIN PATRICK ADDRESS REDACTED DIGESTIVE HEALTH CENTER, PA LACEY FRANKS PO BOX 2153 BIRMINGHAM AL 35287-1867 THIEF RIVER DIGI- KEY CORPORATION A/R ASSOCIATE PO BOX 250 FALLS MN 56701 DIKES, BRAXTON MARTIN ADDRESS REDACTED DILBERT KELLY, GILBERT CARSON ADDRESS REDACTED DILIGENT CORPORATION KATHY GRAHAM DEPT CH 16990 PALATINE IL 60055-6990 DILLER, JONATHAN EDWARD ADDRESS REDACTED RUA MARECHAL DEODORO 231 DILMAR COMERCIO DE MATERIAIS VENDAS - DILMAR CENTR RIO DE JANIERO RJ 24030-060 BRAZIL DIRECTV PO BOX 60036 LOS ANGELES CA 90060 DISA INC ACCOUNTS RECEIVABLE DEPT 3731 PO BOX 123731 DALLAS TX 75312-3731 DISMETER COMERCIAL ELECTRICAL RAMON PRACA JOSE DE ANCHIETA 314 MACAE RJ 24943-170 BRAZIL DISOTELL, MARK L ADDRESS REDACTED DISTRIBUIDORA DE FILTROS ALICIA ALEJANDRO BALTAZAR DISTRIBUIDOR VIAL EL COUNTRY LOTE 12 VILAHERMOSA TB 86280 MEXICO CD DEL CARMEN DISTRIBUIDORA FRANJOE S DE RL LORELY SUSANA CALLE GEOGRAFOS NO 31 CAMP 24155 MEXICO DISTRIBUIDORA SUED OFFSHORE ROSEMAR DA SILVA OLIVEIRA AV NOSSA SENHORA DA GLORIA 267 CAVALEIROS MACAE RJ 27920-360 BRAZIL ENTRE 26B438 2 DEL CARMEN DISTRIBUIDORA Y COMMERCIALIZA JUDITH MOJARRAS CRUZ PETROMAR SA DE CV MALECON LA CALETA LOCAL 2 CAMP 24120 MEXICO DIXON, KEVIN DANIEL ADDRESS REDACTED DJO GLOBAL LLC CLAIRE PFOSER PO BOX 515471 LOS ANGELES CA 90051 DLCS LLC (DALE LAPEYROUSE) DALE LAPEYROUSE 207 MIRE ST HOUMA LA 70364 DLS, LLC MISTY LAVIOLETTE PO BOX 309 LYDIA LA 70569 DMCG SOLUTIONS LLC DAN MURPHY 2450 ATLANTA HIGHWAY SUITE 1201 CUMMING GA 30040 DMD AND ASSOCIATES INC DANIELLE M. DAYRIES 337 OLIVIER ST NEW ORLEANS LA 70114 CHESTER DMW MARINE GROUP LLC SARAH REEDER 1123 ST MATTHEWS ROAD SPRINGS PA 19425 DNB BANK ASA 200 PARK AVE, 31ST FLOOR NEW YORK NY 10166 DNOW, L.P. HELEN DEWBERRY PO BOX 200822 DALLAS TX 75320-0822 DNV GL LTDA RACHEL BRAZAO RUA SETE DE SETEMBRO RIO DE JANEIRO RJ 20050-901 BRAZIL DNV GL NOBLE DENTON USA LLC IRENE PENA 1400 RAVELLO DRIVE KATY TX 77449 DO CARMO FILHO, FRANCISCO RODRIGUES ADDRESS REDACTED DOANE, WALTER D ADDRESS REDACTED DOBSON, CHUCK ANTHONY ADDRESS REDACTED DOCK BRAS ESTALEIROS LTDA EUDES ANDRADE SODRE AV N 325 PART NITEROI RJ BRAZIL DOCUCENTER LLC KRAIG SCHEXNAYDER 2033 N. HWY. 190 STE 2 COVINGTON LA 70433 DOE, DARNELL ADDRESS REDACTED PENHA DOKA SOLUCOES COMERCIO MARA RUA DA BATATA 102 - BOX 02 CIRCULAR RIO DE JANEIRO RJ 21011-020 BRAZIL DOMANGUE, DONOVAN JAMES ADDRESS REDACTED DOMANGUE, SHERWOOD JAMES ADDRESS REDACTED DOMINGUEZ DOMINGUEZ, JESUS MANUEL ADDRESS REDACTED DOMINGUEZ GOMEZ, MICHAEL ADDRESS REDACTED DOMINGUEZ HERNANDEZ, IGNACIO ADDRESS REDACTED DONNELLEY FINANCIAL LLC ADELE WALLACE PO BOX 842282 BOSTON MA 02284-2282 DONNELLY, ROBERT ANTHONY ADDRESS REDACTED DONOVAN MARINE INC. LAURA TUCKER PO BOX 1979 MEMPHIS TN 38101

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 20 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 23 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country DONOVAN SERVICE AND REPAIR LLC LAURA RUCKER 6316 HUMPHREYS STREET HARAHAN LA 70123 DORCEY, LESLIE P. ADDRESS REDACTED DOS SANTOS, CLAUDIO LUIZ LIMA ADDRESS REDACTED DOS SANTOS, MARCELO GIOVANNI VAZ ADDRESS REDACTED DOS SANTOS, WAGNER ADDRESS REDACTED DOUBLEDAY, JENNIE A. ADDRESS REDACTED DOUCETTE, RACHAEL ELENA ADDRESS REDACTED DOUGLAS, NICHOLAS R ADDRESS REDACTED DOUGLASS, KEVIN J. ADDRESS REDACTED FAVERSHAM, UNITED DOUGLAS-WESTWOOD LTD ELLIE PICKERING 20 EAST STREET KENT ME13 8AS KINGDOM DOWNEY ENGINEERING CORP LYNN BRADLEY ONE GALLERIA BLVD, STE 907 METAIRIE LA 70001 DOWNEY, ANDREW PHILIP ADDRESS REDACTED DOWNTOWN PHYSICAL THERAPY JAMES LEA 16645 HIGHLAND ROAD SUITE L BATON ROUGE LA 70810 DRAYER PHYSICAL THERAPY KAYLA VAMER 199 BROOKMOORE COLUMBUS MS 39705 DREW MARINE BRASIL FORNECEDORA ISA SANTOS TAVARES AV PARIS 676 RIO DE JANEIRO RJ 21041 020 BRAZIL DREW, JONATHAN EMANUEL ADDRESS REDACTED DREW, JULIAN EMANUEL ADDRESS REDACTED DREW, SIAN MARIE ADDRESS REDACTED DUARTE, ALEXANDRE DA SILVA ADDRESS REDACTED DUCON, YESID ANDRES ADDRESS REDACTED DUCTZ OF SOUTH LOUISIANA PAM DELHOMMER 121 LUKE STREET LAFAYETTE LA 70506 DUDLEY, JASON M ADDRESS REDACTED DUFOUR LASKAY & STROUSE INC MIMI GORMAN 3017 LIME STREET METAIRIE LA 70006 DUFRENE, JOBE R. ADDRESS REDACTED DUFRENE, TIMOTHY BLAINE ADDRESS REDACTED DUKE, DAVID A ADDRESS REDACTED CIUDAD DEL DUNCAN Y COSSIO SA MINIAM CORTES CORTES CALLE 1 SUR MANZANA S LOTE 1 PUERTO CARMEN CAMPECHE 24129 MEXICO DUNHAM, SCOTT EDWARD ADDRESS REDACTED DUPLANTIS, YANCEY P ADDRESS REDACTED DUPLECHIN, JASON P ADDRESS REDACTED DUPLESSIS, OLIVIA P ADDRESS REDACTED DUPRE, MARIE VAURIGAUD ADDRESS REDACTED DUPRE, RACHAEL M ADDRESS REDACTED DURAN ALVAREZ TOSTADO, DANIEL ENRIQUE ADDRESS REDACTED DURAN, ISNARDO ADDRESS REDACTED DURHAM, TREVOR ANTHONY ADDRESS REDACTED DUSSOUY, DAVID A ADDRESS REDACTED DWIGHT S. RAMSAY 309 LA RUE FRANCE SUITE 101 LAFAYETTE LA 70508 DWYER, NANCY RACHEL ADDRESS REDACTED DXP ENTERPRISES INC. CAROL THOMPSON PO BOX 840511 DALLAS TX 75284-0511 DYNASPLINT SYSTEMS INC JON HANCZARYK 770 RITCHIE HIGHWAY SUITE W-21 SEVERNA PARK MD 21146-4152 E S & H KELLY PAGOAGA PO BOX 2650 HARVEY LA 70059 E T GRESHAM COMPANY INC PATRICIA WHITE - SUA RECIPIENT PO BOX 1077 NORFOLK VA 23501 UNITED EA GIBSON SHIPBROKERS LTD RACHEL CORDIER AUDREY HOUSE 16-20 ELY PLACE LONDON KINGDOM EARNEST, AUSTIN JAMES ADDRESS REDACTED EAST JEFFERSON GENERAL HOSPITA CUSTOMER SERVICE PO BOX 975479 DALLAS TX 75397-5479 EAST PARK RADIATOR & BATT DEBRA BOUDREAUX PO BOX 850 BOURG LA 70343-0850 EASTERN CANADA RESPONSE CORP. ANN THERRIEN 1201 - 275 SLATER STREET OTTAWA KIP 5H9 CANADA EASTERN SHIPBUILDING GROUP SCOT COLEMERE PO BOX 960 PANAMA CITY FL 32402 EBI CRANES LLC KRISTINA HENDERSON DBA EBI CRANES LLC 124 FINISH LINE LANE HOUMA LA 70360 ECAD INC JESSICA WEIS PO BOX 51507 MIDLAND TX 79710-1507 ECOLAB INC GWENDOLYN SPRADLEY 26252 NETWORK PLACE CHICAGO IL 60673-1262 PARAISO ECOMARINE SA DE CV C. JOSE OMAR MENDOZA ARAUJO CALLE NACIR ANTONIO RAJAL 234 INTERIOR 4 TABASCO 86600 MEXICO ECOSERV LLC MARGARET KING GREENE PO BOX 733084 DALLAS TX 75373-3084 ECRA PLLC PO BOX 13085 PENSACOLA FL 32591 EDDIE SMITH, MD ADDRESS REDACTED EDDY, JAMES M ADDRESS REDACTED EN MANOS DE LICS. OSCAR HIDALGO CARRILLO Y EDUARDO MUÑOZ GAPIZ TERESA DE JESUS CAMACHO GONZALEZ ADDRESS REDACTED EDWARD J. NOLAN III C/O BANK OF AMERICA MERRILL LYNCH ADDRESS REDACTED EDWARD J. NOLAN III C/O BANK OF AMERICA MERRILL LYNCH ADDRESS REDACTED EDWARDS, RYAN D ADDRESS REDACTED EFFINGHAM HOSPITAL KATRINA MARTIN 459 HWY 119 SOUTH SPRINGFILED GA 31329-3021 EHA CONSULTING GROUP INC MAY FORD 7904 STARBURST DRIVE BALTIMORE MD 21208 EIDENS, WILLIAM H ADDRESS REDACTED EILTS, STEPHEN WYATT ADDRESS REDACTED

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 21 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 24 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country EKENES, ROLF NORMAN ADDRESS REDACTED EL BATOUTY, TAREK ADDRESS REDACTED ELDRIDGE, OTIS COLLIN ADDRESS REDACTED ELECTRICA GARCIA SA DE CV SANDRA LUZ SANTIAGO VELAZQUEZ BOULEVARD ADOLFO LOPEZ MATEOS 609 NORTE COL GUADALUPE MAINER TAMPICO TM 89070 MEXICO TAMPICO ELECTROMEX MANTENIMIENTO INDUS ING. EDUARDO SALAS FERNANDEZ E CARRANZA 1203 OTE ZONA CENTRO TAMAULIPAS 89000 MEXICO CIUDAD DEL ELECTRONICA MIQUELES SA DE CV CLAUDIO ANDRES VARELA PORTALES CALLE 31C NO. 28 COLONIA CENTRO CARMEN CP 24170 MEXICO ELECTRONICS CORNER INC. ROY BERGERON 1400 SANDRA STREET MORGAN CITY LA 70380 ELLEFSON, JOEL WILLIAM ADDRESS REDACTED ELLIOTT BAY DESIGN GROUP JOE PRITTING 5305 SHILSHOLE AVE N W STE 100 SEATTLE WA 98107-4021 ELLIOTT ELECTRIC SUPPLY INC MARK BAUBLET PO BOX 206524 DALLAS TX 75320-6524 ELLIOTT, LYDIA L ADDRESS REDACTED ELLIS, KIP O ADDRESS REDACTED GA BENGSTFORSVS EL-SUPPLY AB MONA LARSSON PO BOX 20 66821 ED GEN 66832 ED SWEDEN EMARES AYROMAR INDUSTRIA MORAES AV BM 1100 PARTE ROD ANARAL PEIXOTO KM183 HISE DI BARRETO MACAE RJ 27971-000 BRAZIL EMBRATEL TVSAT TELECOMUNICACOE JORDANNA OU JONATAN AV COELHO DA ROCHA 364 GALPAO 2PARTE CENTRO BELFORD ROXO RJ 26130-130 BRAZIL EMBRES, JOSEPH B ADDRESS REDACTED EMERALD COAST REHAB ASSOC, INC CYNTHIA ELLIS PO BOX 13085 PENSACOLA FL 32591 EMERGENCY PHYSICIANS OF TIDE PO BOX 603325 CHARLOTTE NC 28260-3325 EMERGENCY RESOUCES GROUP MARY VASSEUR PO BOX 11349 DAYTONA BEACH FL 32120-1349 EMERGENCY RESPONSE TOWING CAROL BERGSTROM 100 WEST HARRISON SUITE S-560 SEATTLE WA 98119 EMERSON PROCESS MANAGEMENT CHRIS HILL AADERUPVEJ 41 NAESTVED 4700 DENMARK EMERY CORPORATION KAREN SMITH PO BOX 1104 MORGANTON NC 28680 EMI, A DIVISION OF W AND O LIZ GARCICH - SUA RECIPIENT PO BOX 939734 ATLANTA GA 31193 EMIGAR INTERNATIONAL, INC. EMILIO GARZA 202 S EYE ST HARLINGEN TX 78550 EMS VENDAS E SERVICOS ME JOAO FRANCISCO RUA TERESOPOLIS 31 RIO DAS OSTRAS RJ 28890 000 BRAZIL EMT ELECTRONICS INC MARY THIBODEAUX 2025 GRAND CAILLOU ROAD HOUMA LA 70363 ENCORE FOOD SERVICE MELANIE UNBEHAGEN PO BOX 5091 HOUMA LA 70361 ENDRESS HAUSER INC DANIELLE FLORES DEPT 78795 PO BOX 78000 DETROIT MI 48278-0795

ENDURANCE AMERICAN INSURANCE COMPANY 4 MANHATTANVILLE ROAD 3RD FLOOR PURCHASE NY 10577 ENK, MICHAEL ALAN ADDRESS REDACTED ENRIQUEZ GRANADOS, JAVIER ADDRESS REDACTED ENRIQUEZ LINALDI, VICTOR MANUEL ADDRESS REDACTED ENRIQUEZ PRIETO, VICTOR MANUEL ADDRESS REDACTED ENRIQUEZ PRIETO, WILLIANS ADDRESS REDACTED ENTERGY PO BOX 8108 BATON ROUGE LA 70891-8108 ENTERGY LOUISIANA LLC GLENDA CLEVELAND 4809 JEFFERSON HWY SUITE A NEW ORLEANS LA 70121 ENVIRONMENTAL PROTECTION AGENCY MAIL CODE 2310A, OFFICE OF GENERAL COUNSEL 1200 PENNSYLVANIA AVE NW ARIEL RIOS BUILDING WASHINGTON DC 20004 ATTN: PROPERTY MANAGER, EIGHT GREENWAY EOLA CAPITAL LLC PROPERTY 9 GREENWAY PLAZA, SUITE 650 HOUSTON TX 77046 REGION 6 SUPERFUND DIVISION EPA VALMICHAEL LEOS 1445 ROSS AVENUE SUITE 1200 (6SP-RL) DALLAS TX 75202-2733 EPA CINCINNATI FINANCE OFFICE 26 MARTIN LUTHER KING DRIVE CINCINNATI OH 45268 EPLEY, CALEB BRUCE ADDRESS REDACTED EQUILAR, INC DELMY GONZALES 1100 MARSHALL ST SUITE 201 REDWOOD CITY CA 94063 EQUITY MARINE SURVEYING PETER DEEGAN 30 CHURCH STREET KEYPORT NJ 07735 ERA HELICOPTERS LLC PATRICK WILLIAMS PO BOX 734251 DALLAS TX 75373-4251 ERAZO LUNA, RICARDO ADDRESS REDACTED ERICK LUIS NOTARIO GARCIA ERICK LUIS NOTAIRO GARCIA ADDRESS REDACTED ERIKS BV PAUL RAYMOND ORANJE PO BOX 280 1800 BK ALKMAAR NH NETHERLANDS ERNST & YOUNG (GHANA) MICHAEL GBADAGO PO BOX KA 16009 G 15 WHITE AVE AIRPORT ACCRA GHANA ERNST & YOUNG AUDITORES IND DANIEL PEIXOTO PRAIA BOTAFOGO 300 ANDAR 13 ALA B BOTAFOGO RIO DE JANEIRO RJ 22290-906 BRAZIL ERNST & YOUNG LLP WACHOVIA BANK PO BOX 933514 ATLANTA GA 31193-3514 COL DEL MIGUEL ERNST & YOUNG LLP (MEXICO) HECTOR MONTES AV EJERCITO NACIONAL TORRE PASEO 843 B PISO 4 GRANADA HILDAGO 11520 MEXICO ERNST, DAVID ADDRESS REDACTED ERNST, JOHN J. ADDRESS REDACTED ESCUDERO LIZARRAGA, FERNANDO ALAN ADDRESS REDACTED ESKEW+DUMEZ+RIPPLE JENIFER B. NAVARD 365 CANAL STREET STE 3150 NEW ORLEANS LA 70130 ESPERICUETA RAMOS, LUIS EDUARDO ADDRESS REDACTED ESPINAL, EDDIE ADDRESS REDACTED ESPINOSA MARTINEZ, ADRIAN ADDRESS REDACTED ESPITIA, ARTHUR JOSE ADDRESS REDACTED ESQUEDA GUZMAN, JORGE ADDRESS REDACTED

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 22 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 25 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country ESQUIVEL PERALTA, BRAULIO ADDRESS REDACTED ESQUIVEL, ESTEBAN L ADDRESS REDACTED ESTALEIRO MAUA S A MARLO MARQUES ROSA RUA DR PAULO FRUMENCIO 28 PONTA D'AREIA NITEROI RJ 24040-290 BRAZIL ESTANIEL, EDWIN ADORADOR ADDRESS REDACTED ESTAY OJEDA, CHRISTIAN ARIEL ADDRESS REDACTED ESTRON DISTRI CENTRE B.V. PATRICK V/H GELOOF MARINE DEPARTMENT POSTBUS 45 SPIJKENISSE 3200AA NETHERLANDS ETHIER, ZACHARY C ADDRESS REDACTED EUFRACIO TORRECILLA, JESUS ALEJANDRO ADDRESS REDACTED EULER HERMES NORTH AMERICA INSURANCE COMPANY LEE FAHRENZ 800 RED BROOK BLVD OWINGS MILLS MD 21117 EUROSUL FORNECEDORA DE NAVIOS CARLOS ROBERTO LIZOTT RUA LAPO 180 PINHAIS PR 83327 075 BRAZIL EVANS, MATTHEW TRAVIS ADDRESS REDACTED EVELIO AGUILAR DE LA CRUZ MARIO ANTONIO AGUILAR DE LA CR ADDRESS REDACTED

ANA KAREN IZAGUIRRE ALARCON, JULIO LEONARDO EVERT RAMIREZ CONTRERAS FLORES BUENO, Y NORMA DELIA TORRES ROMAN ADDRESS REDACTED EVOQUE DATA CENTER SOLUTIONS DAWNA FRANKLIN DBA DAWN US HOLDING LLC PO BOX 841569 DALLAS TX 75284-1569 EXCEL SPORTS AND PHYSICAL TRISH BURNER PO BOX 8542 CAROL STREAM IL 60197-8542 EXPORT 220VOLT INC 5810 HILLCROFT AVE HOUSTON TX 77036 EXPRESS SUPPLY & STEEL, LLC KAREN CHAISSON - SUA RECIPIENT PO BOX 5091 HOUMA LA 70361-5091 EXPRESS SYSTEMS AND PERIPHERAL DEBBIE POWELL 623 HERMAN ROAD JACKSON NJ 08527-3009 EXPRESSO PREDILETO TRANSPORTES OLILIO ANDRADE RUA COM, SINEZIO T. COELHO 35 - N MACAE RJ 27930-350 BRAZIL EXXON MOBIL FLEET PO BOX 5727 CAROL STREAM IL 60197-5727 EXXON MOBIL OIL-LUBE CHERYL CHRISTOPHER PO BOX 8500 K-120 PHILADELPHIA PA 19178-0120 FABIAN, JOSHUA JEREMY ADDRESS REDACTED FACTIVA INC, DOW JONES COMPANY CASS LANDRY C/O DOW JONES & CO PO BOX 30994 NEW YORK NY 10087-0994 FACUNDO CABANAS, FULGENCIO ADDRESS REDACTED FAGAN, DANIEL SHANNON ADDRESS REDACTED FAGAN, IAN C ADDRESS REDACTED FAIOLA, NICHOLAS ANTHONY ADDRESS REDACTED FAIRWAY MEDICAL CENTER JUDY ZWANK 67252 INDUSTRY LANE COVINGTON LA 70433 FAJE LOGISTICA E TRANSPORTE LTDA JOSEMARA VILELA AV GUADALAJARA N 1176 PARTE LOJA PAIA CAMPISTA MACAE RJ 27933 420 BRAZIL FALCAO EXPRESS SERVICOS DE COL MARCILENE FALCAO RUA UM N 26 BAIRRO NOSSA SR DA AJUDA MACAE RJ 27971 390 BRAZIL FALCON, BRANDI NICHOLE ADDRESS REDACTED FALEY, CASEY PAUL ADDRESS REDACTED FALINI, JEFFERY PETER ADDRESS REDACTED FAMP DE BARROS GOMES COPIADORA JOSEMARA RUA TEIXEIRA DE GOUVEIA 724 CENTRO MACAE RJ 27916-000 BRAZIL FANAF PARAFUSOS LTDA WAGNER RUA BARAO DO AMAZONAS 334 NITEROI RJ 24030-011 BRAZIL FARINACCI, NOEL E ADDRESS REDACTED FARRIS, ROGER KYLE ADDRESS REDACTED FASB PO BOX 418272 BOSTON MA 02241-8272 FASSMER SERVICE AMERICA JESSICA CABALLERO 3650 NW 15TH STREET LAUDERHILL FL 33311 FASTENAL COMPANY RHIANNON CARVALHO-SUA RECIPIEN PO BOX 1286 WINONA MN 55987-1286 GENERAL FASTENAL MEXICO S DE RL DE CV EFRAIN BARRALES CARRETERA A LAREDO KM 33.5 COLONIA NUEVA CASTILLA ESCOBEDO NUEVO LEON 66052 MEXICO FDF ENERGY SERVICES BARRY CHARPENTIER PO BOX 677438 DALLAS TX 75267-7438 FEBULA MARINER COMERCIO ROSA MARIA RUA PIERRE MENDEVAR 51 JD NS DA MAGE RJ 25901-098 BRAZIL FECHNER, CHRISTOPHER A ADDRESS REDACTED FECHNER, STEVEN LOGAN ADDRESS REDACTED FEDERAL COMMUNICATIONS COMMISS TIM DATES PO BOX 979096 ST. LOUIS MO 63197-9000 FEDERAL COMMUNICATIONS COMMISSION PO BOX 979096 ST. LOUIS MO 63197-9000 FEDERAL EXPRESS CORPORATION PO BOX 660481 DALLAS TX 75266-0481 FEDERAL RESERVE BANK OF NEW YORK 33 LIBERTY STREET NEW YORK NY 10045 FEDERAL TRADE COMMISSION UNKNOWN NEW YORK NY FEDEX CUSTOM CRITICAL DEITRA ROBINSON - SUA RECIP PNC BANK C/O FEDEX CUSTOM CRITICAL PITTSBURGH PA 15264-5123 FEDEX EXPRESS CORPORATION - FT NATHALIA BUENO AVENIDA DAS NACOES UNIDAS 17891 1 ANDAR SAO PAULO SP 04795-920 BRAZIL FEDEX FREIGHT EAST CUSTOMER SERVICE DEPT CH P.O.BOX 10306 PALANTINE IL 60055-0308 FELIX HERNANDEZ, MANUEL ADDRESS REDACTED FEMENELLA, ROREY BERNARD ADDRESS REDACTED FENDERCARE DO BRASIL COMERCIO JOHNNY AMARAL RUA 01 LOTE 113 QD 01 RIO DAS OSTRAS RJ 28890 000 BRAZIL PRAIA FENIX SOLUTIONS SERVICOS EDUARDO RODRIGUES CESPEDES AV ATLANTICA 386 SALA 111 EDIFICIO MBC CAMPISTA MACAE RJ 27920-390 BRAZIL FERMAN CORTEZ, VICTOR HUGO ADDRESS REDACTED FERNALD, HUNTER JOHN ADDRESS REDACTED FERNALD, TREVOR T ADDRESS REDACTED FERNANDES MARITIME CONSULTANTS, LLC KAREN J. FERNANDES 3525 N. CAUSEWAY BLVD STE 338 METAIRIE LA 70002 FERNANDEZ CHONG, MOISES IVAN ADDRESS REDACTED FERNANDEZ GARCIA, ADRIAN ENRIQUE ADDRESS REDACTED FERNANDEZ MACHADO, EDHER LUIS ADDRESS REDACTED FERNANDEZ ZAVALA, ALFREDO ADDRESS REDACTED

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country FERNANDEZ, CHERIE LYNN ADDRESS REDACTED FERNANDEZ, JUAN CARLOS ADDRESS REDACTED LICS. HUGO HUMBERTO PEREZ DE LA CRUZ, Y FERNANDO ALEJANDRO PEDRERO MONTIEL RICARDO ARTURO PEREZ GOMEZ ADDRESS REDACTED FERNANDO FERNANDEZ RICARDEZ FERNANDO FERNANDEZ RICARDEZ ADDRESS REDACTED FERRARI COMERCIO E SERVICOS PATRICIA R JOSE CIRIACO JR 68 PRAIA CAMPISTA MACAE RJ 27923-130 BRAZIL FERRE, NICHOLAS ALEXANDER ADDRESS REDACTED FERRER, JEANNE E ADDRESS REDACTED FERRIS A-1 GLASS SHOP INC. CHRISTY PO BOX 3533 MORGAN CITY LA 70381 FERRO CASTRO NEVES DALTRO & GO JOSE ROBERTO DE CASTRO NEVES RUA RAMOS BATISTA N198 8 ANDAR SAO PAULO RJ 04552-020 BRAZIL FERROUILLAT, AARON WAYNE ADDRESS REDACTED FERSTER, WILLIAM JOE ADDRESS REDACTED FETRANSPOR RUA DA ASSEMBLEIA 10 RIO DE JANEIRO 20011901 BRAZIL FIDELITY AND DEPOSIT COMPANY OF MARYLAND C/O KREBS, FARLEY & DRY, PLLC ATTN DAVID KREBS 400 POYDRAS STREET, #2500 NEW ORLEANS LA 70130 FIDELITY CASH PO BOX 77307 CHICAGO IL 60673-7307 FIDELITY INSTITUTIONAL OPERATI POST OFFICE BOX 73307 CHICAGO IL 60673-7307 FIDELITY INVESTMENTS PO BOX 77307 CHICAGO IL 60673-7307 FIDELITY NATIONAL PROPERTY & CASUALTY INSURANCE CO PO BOX 33003 ST. PETERSBURG FL 33733 FIDELITY STOCK PO BOX 77307 CHICAGO IL 60673-7307 FIGUEIREDO, EDGAR ANTONIO ADDRESS REDACTED FIGUEROA FISCAL, HECTOR ADDRESS REDACTED FIGUEROA ROSAS, RUBEN ADDRESS REDACTED FILHO, ERENILTON JOSE DA SILVA ADDRESS REDACTED FILHO, JOSE CARLOS CAVALCANTE DE SOUZA ADDRESS REDACTED FILTRATION EQUIPMENT RENTAL MARK CRAIN 17732 HIGHLAND ROAD SUITE G, BOX 103 BATON ROUGE LA 70810 FINK, ROBERT ALLEN ADDRESS REDACTED FIRE ETC DEBRA LUDWIG 2190 MAIN STREET SAN DIEGO CA 92113 FIRE PROTECTION SERVICE INC DANIELLE WILLIAMS PO BOX 5218 HOUSTON TX 77262-5218 FISHER, BRAYDEN MATTHEW ADDRESS REDACTED FISHERIES SUPPLY COMPANY DEANN DONALDSON 1900 N NORTHLAKE WAY #10 SEATTLE WA 98103 FITTING, GEORGE WILLIAM ADDRESS REDACTED TRINIDAD & FITZWILLIAM STONE FURNESS MARK MORGAN SMITH & MORGAN PO BOX 75 PORT OF SPAIN TOBAGO FLAGSHIP MANAGEMENT LLC CRAIG JOHNSON 101 N RIVERSIDE DR STE 210 POMPANO BEACH FL 33062 FLANAGAN, SHAWN M ADDRESS REDACTED FLAVIENSE INDUSTRIA MARCELO LUIZ AV PRES TANCREDO NEVES S/N QD 8 LT 01 A 04 RIO JANEIRO RJ 26.400-000 BRAZIL FLEET SUPPLY WAREHOUSE LLC TORI BAUDOIN - SUA RECIPIENT PO BOX 9055 HOUMA LA 70361 FLEMING, CHRISTOPHER BLAKE ADDRESS REDACTED FLETCHER, THOMAS G. ADDRESS REDACTED FLEUR DE LIS FAMILY CARE INC PO BOX 8301 METAIRIE LA 70011-8301 FLEXJET LLC JOHN MOSNJA PO BOX 677207 DALLAS TX 75267-7207 FLIGHT OPTIONS, LLC BILLING DEPARTMENT 8408 SOLUTIONS CENTER CHICAGO IL 60677-8004 FLODRAULIC GROUP INC MAGGIE EMMIGNER- SUA RECIPIENT NO 774583 , 4583 SOLUTIONS CTR CHICAGO IL 60677-4005 FLORENCE, DERRICK P ADDRESS REDACTED FLORENCE, JEFFREY P ADDRESS REDACTED FLORENCIO, MARCO TULIO DA SILVA ADDRESS REDACTED FLORES BURGUENO, FELICIANO ADDRESS REDACTED FLORES CANEDO, MELCHOR ADDRESS REDACTED FLORES DESILOS, VIRGINIA ADDRESS REDACTED FLORES FLORES, ALEJANDRO ADDRESS REDACTED FLORES SANTOS, FRANCISCO JAVIER ADDRESS REDACTED FLORES, ERIKA ADDRESS REDACTED FLORES, PABLO A ADDRESS REDACTED FLORIDA DIAGNOSTIC IMAGING CRYSTAL ZIMMER PO BOX 933544 ATLANTA GA 31193-3544 FLOW LINE VALVE AND CONTROLS CHRISTINA JOHNSON PO BOX 677 SCHRIEVER LA 70395 FLOYD, BRENDAN ERIK ADDRESS REDACTED FMT AGGREGATE LLC KRISTY DUTSCH PO BOX 203351 DALLAS TX 75320-3351 FNTTAA LUIS FRANCISCO AVENIDA PASSOS, 120, 3 ANDAR RIO DE JANEIRO RJ 20051-040 BRAZIL FOCUS HEALTH SOLUTIONS DR JOSE MAURO RUA DR BUENO 488 IMBETIA MACAE RJ 27913-190 BRAZIL FOLEY, DAVID ALEXANDER ADDRESS REDACTED FOLGER, ROBIN W ADDRESS REDACTED FOLIO INVESTMENTS INC JUDI BUSHONG PROXY SERVICES DEPT PO BOX 10544 MCLEAN VA 22102-8544 FONDREN ORTHOPEDIC GROUP LLP CHRISTINA MARTINEZ 7401 S. MAIN HOUSTON TX 77030 FOOTIT, MARA JOAN ADDRESS REDACTED FORCE POWER SYSTEMS SHANTAL ROGER 3799 AIRLINE HWY RESERVE LA 70084 FORD, GARDENIA MANGUCI ADDRESS REDACTED FORD, RONALD NEAL ADDRESS REDACTED FORD, STEVEN MICHAEL ADDRESS REDACTED FORERO FLECHAS, NEFTALI ALFONSO ADDRESS REDACTED

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 24 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 27 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country FORET, RICKY JOHN ADDRESS REDACTED FOREVER GREEN MARY ANN HATTER PO BOX 1351 MADISONVILLE LA 70447 FORTIER JR, MICHAEL D ADDRESS REDACTED FORTIER, MICHAEL J ADDRESS REDACTED FORTIER, PETER F ADDRESS REDACTED FORUM ENERGY TECHNOLOGIES JACKEY GOMEZ PO BOX 203325 DALLAS TX 75320-3325 FOSS MARITIME COMPANY LLC CHERYL EMBURY 450 ALASKAN WAY SOUTH SUITE 706 SEATTLE WA 98104 FOSS, NEVAN COREY ADDRESS REDACTED FOSTER MARKETING LLC DARLENE MILLER 3909-F AMBASSADOR CAFFERY LAFAYETTE LA 70503 FOSTER, RALPH R ADDRESS REDACTED FOURCHON OILMANS ASSOCIATION TRAVIS TERREBONE PO BOX 1270 CUT OFF LA 70345 FOX, STEVEN WAYNE ADDRESS REDACTED FOYE, SHANNON P ADDRESS REDACTED FRAGOMEN DEL REY BERNSEN ALYCE SCARANO 75 REMITTANCE DRIVE SUITE 6072 CHICAGO IL 60675-6072 FRAGOZO AVALOS, HERMINIO ADDRESS REDACTED FRANCA, RAFAELA GOMES DE ADDRESS REDACTED FRANCIS, JASON ADDRESS REDACTED FRANCISCAN MEDICAL GROUP GLORIA DEFORD PO BOX 31001-2373 PASADENA CA 91110-2373 FRANCISCO FERREIRA DA SILVA FRANCISCO FERREIRA DA SILVA RUA PADRE VICENTE CARIOU 192 PARQUE AEROPORTO MACAE RJ 279550130 BRAZIL FRANCISCO, JOHN ANTHONY ADDRESS REDACTED FRANCO DAMIAN, JOAQUIN ARTURO ADDRESS REDACTED FRANK, ERIC N ADDRESS REDACTED FRANKLIN OFFSHORE AMERICA MARY MOORE PO BOX 338 BROOKSHIRE TX 77423 FRANZ, ARTHUR JOSEPH ADDRESS REDACTED FRASER, ALEXANDER NICHOLAS ADDRESS REDACTED FRATELLI COSULICH COMERCIO VANUSA CORDEIRO RUA CORCOVADO 328 POLO INDUSTRIAL CABIUNAS 2 MACAE RJ 27977-335 BRAZIL FRAZIER, RODERICK T. ADDRESS REDACTED FRED STOKES FRED STOKES ADDRESS REDACTED FREDERICA IMAGING PC JACKIE B. PO BOX 16866 SAVANNAH GA 31416-3566 FREELAND, GARY ADDRESS REDACTED FREEMAN, CHARLES BARRON ADDRESS REDACTED FREEMAN, LARRY D ADDRESS REDACTED FREIERMUTH, KYLEE AMBER ADDRESS REDACTED FREKEY, EDWARD HENRY ADDRESS REDACTED FRENKEL BENEFITS LLC DBA FRENKEL AND COMPANY CELIO SOLORZANO PO BOX 3037 HICKSVILLE NY 11802-3037 FRICK, KAREN H ADDRESS REDACTED FRIEND, ANDREW M ADDRESS REDACTED FRILOT, LLC TINA BLANCHARD 1100 POYDRAS ST SUITE 3700 NEW ORLEANS LA 70163-3600 FRIMPONG, KEVIN BOADU ADDRESS REDACTED FRISCH, THOMAS L ADDRESS REDACTED TRINIDAD & FT FARFAN LTD (TRINIDAD) BRIAN ALCANTARA 3-5 IFIS AVENUE IBIS ACRES SAN JUAN TOBAGO FUELMAN OF BATON ROUGE TERESA LALONDE PO BOX 70887 CHARLOTTE NC 28272-0887 FUERTES, MATTHEW RYAN ADDRESS REDACTED FUETTE, MARK STEPHEN ADDRESS REDACTED FUGRO NORWAY AS BJEM INGE NILSEN PO BOX 490 OSLO 213 NORWAY FUGRO USA MARINE INC KARLA PINEDA - SUA RECIPIENT PO BOX 301114 DALLAS TX 75303-1114 DEL FUJISAN SURVEY SA DE CV ING. ANA ISABEL TREJO DAVILA AV AZCAPOTZALCO 696 INT COL AZCAPOTZALCO AZCAPOTZALCO 2000 MEXICO COLEL LIMON FULGENCIO AVENDANO GUTIERREZ CAROLINA HERNANDEZ SANCHEZ CARRETERA ESTATAL PARAISO DOS BOCAS KM1 PARAISO TABASCO 86600 MEXICO FULLER, GEORGE LEROY ADDRESS REDACTED FULTZ, CHRISTOPHER SCOTT ADDRESS REDACTED COMALCALC FUMI-AMERICA-COMALCALCO JOSE JUAN MENDOZA MALDONADO CALLE MORELOS NO 1019 COL VICENTE GUERR O TABASCO 36850 MEXICO FUNDACAO GETULIO VARGAS VALERIA PRAIA DE BOTAFOGO 190 13 BOTAFAGO RIO DE JANEIRO RJ 22250900 BRAZIL FUNDACAO HOMEM DO MAR EDSON AV PRESIDENTE VARGAS 309 15 ANDAR CENTRO RIO DE JANEIRO RJ 20040 010 BRAZIL FUNDAMENTAL MANUTENCAO JOEL TEIXEIRA DA CUNHA RUA VILA RICA 836 SALA 3 PADRE BELO HORIZONTE 30730-592 BRAZIL FURLOUGH, ASHETON CARRAWAY ADDRESS REDACTED FURROW, JOSEPH ANDREW ADDRESS REDACTED FURROW, MATTHEW LEO ADDRESS REDACTED 1114 AVENUE OF THE AMERICAS - FUTURE FUND BOARD OF GUARDIANS C/O OAK HILL ADVISORS ATTN: JENNIFER COHEN; SHILPA WANI 27TH FLOOR NEW YORK NY 10036 FUTURE PIPE INDUSTRIES INC DEBBIE KOHUT 11811 PROCTOR ST HOUSTON TX 77038 G L FERREIRA COMERCIO DE ACOS GILMAR DE LEMOS FERREIRA RUA CARLOS MAXIMIANO 192 FONSECA NITEROI RJ 24120-000 BRAZIL GABINO MULATO, JAIME ADDRESS REDACTED GABLES RESIDENTIAL SERVICES, INC. DBA GABLES CORPORATE ACCOMODATIONS 3399 PEACHTREE ROAD NE, SUITE 600 ATLANTA GA 30326 GAC SHIPPING (USA) INC DAVID HARTRANFT ONE INTERNATIONAL PLAZA SUITE 250 PHILADELPHIA PA 19113

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country GADIENT, CAMERON STEVEN ADDRESS REDACTED GAETA IBARRA, SALVADOR FRANCISCO ADDRESS REDACTED GAGNE, CASEY A ADDRESS REDACTED GAGNET, PATRICK R ADDRESS REDACTED GAIENNIE, DANIEL PATRICK ADDRESS REDACTED GAINEY, TOMMY L ADDRESS REDACTED GALENA ENGENHARIA LTDA ALEXANDRE TRINAS RUA DOM GERARDO 63 GRUPO 1805 RIO DE JANEIRO RJ 20090-030 BRAZIL GALINDO QUINTERO, GUSTAVO ADDRESS REDACTED GALJOUR, COREY J. ADDRESS REDACTED GALLAGHER, JAMES MICHAEL ADDRESS REDACTED GALLAGHER, MICHAEL PATRICK ADDRESS REDACTED GALLEGOS ALEJANDRO, JESUS ADDRESS REDACTED GALLOWAY JOHNSON THOPKINS BURR DANIEL SIMPSON 701 POYDRAS ST NEW ORLEANS LA 70139 GALVAN, JOSUE TOVAR ADDRESS REDACTED GALVESTON AREA AMBULANCE AUTH EMS BILING GALVESTON AREA AMBULANCE AUTH PO BOX 939 LAMARQUE TX 77568 GALVESTON-TEXAS CITY PILOT BUNNY MAIS PO BOX 16110 GALVESTON TX 77552 GAM PRAGAS URBANAS -EIRELI ELAINE RUA DOUTOR BENEDITO CARLOS FERRREIRA 2312 MACAE RJ 27963580 BRAZIL GAMA, ANDRE LUIS DO NASCIMENTO ADDRESS REDACTED GAMATERMIC TECNICA E COMERCIO CARLOS BATISTA ESTRADA JOAO MELO 875 PARTE CAMPO GRANDE RIO DE JANEIRO RJ 23092 080 BRAZIL GAMBILL, THOMAS GREYSON ADDRESS REDACTED GAMEREADY NANCY BARRIENTOS PO BOX 39000 DEPT 34678 SAN FRANCISCO CA 94139-0001 GANG, ROBERT T ADDRESS REDACTED GARCIA ARELLANO, SAMUEL ADDRESS REDACTED GARCIA DELGADO, JOSE CARLOS ADDRESS REDACTED GARCIA DIAZ, BEATRIZ ADDRESS REDACTED GARCIA DOMINGUEZ, CARLOS ENRIQUE ADDRESS REDACTED GARCIA ESPINOSA, SERGIO NOEL ADDRESS REDACTED GARCIA HERNANDEZ, HECTOR ADDRESS REDACTED GARCIA LEYVA, ELISA ADDRESS REDACTED GARCIA LOPEZ, MANUEL ADDRESS REDACTED GARCIA PALMA, ESTEBAN ADDRESS REDACTED GARCIA RAMIREZ, RUBEN ADDRESS REDACTED GARCIA REYES, VINICIO ADDRESS REDACTED GARCIA ROJAS, JOSE GUADALUPE ADDRESS REDACTED GARCIA SALVADOR, CESAR ADDRESS REDACTED GARCIA, AMY MICHELLE ADDRESS REDACTED GARCIA, ARTURO ADDRESS REDACTED GARCIA, EDUARDO GABRIEL ADDRESS REDACTED GARCIA, RICARDO ADDRESS REDACTED GARD MARINE & ENERGY LTD KITTELSBUKTVEIEN 31 ARENDAL 4836 NORWAY GARDICO INC VIVIKA SUNDQUIST 4912 14TH AVENUE NW SEATTLE WA 98107-5111 GARDNER, CHRISTOPHER RAYMOND ADDRESS REDACTED GARON, MITCHELL PAUL ADDRESS REDACTED GARRIDO MENDEZ, LEANDRO ADDRESS REDACTED GARVIN, TATYANA LATISHA ADDRESS REDACTED GARY ALAN DAIGLE GARY ALAN DAIGLE ADDRESS REDACTED GARY R GLYNN MD APMC 1401 FOUCHER STREET SUITE M1005 NEW ORLEANS LA 70115 GARZA TELLO & ASOCIADOS INSURGENTES SUR NO 4126-201 SANTA URSULA XITLA CP14000 MEXICO GASIOREK, CHRISTOPHER JASON ADDRESS REDACTED GASPARD, AARON M ADDRESS REDACTED GASTROENTEROLOGY ASSOCIATES WANDA 4810 NORTH DAVIS HWY PENSACOLA FL 32503 GASTROENTEROLOGY CENTER SOUTH CATHY WILLIAMS 8120 MAIN STREET STE. 200 HOUMA LA 70360 GATOR SUPPLY CO. INC. J DAVIS - SUA RECIPIENT PO BOX 790 HARVEY LA 70059 GAUBERT OIL CO INC BRIDGET STEIN - SUA RECIPIENT 10 RIENZI DRIVE THIBODAUX LA 70301 GAUTHIER, MARK S. ADDRESS REDACTED GAUTHIER, MICHAEL ANDREW ADDRESS REDACTED GAVIN, ERIK MATTHEW ADDRESS REDACTED GBL PERSONNEL DO BRASIL LTDA VALERIA HERNANDES PRAIA DO FLAMENGO 66 BLOCO B SALA 806 RIO DE JANEIRO RJ 22.210-030 BRAZIL GDS PUBLISHING LIMITED RYAN KANIS 40 WALL STREET, 5TH FLOOR NEW YORK NY 10005 GE ENERGY POWER CONVERSION GLENN REISMAN PO BOX 417441 BOSTON MA 02241-7441 GE POWER CONVERSION BRASIL FABIANO PONTES ROD BR381 FERNAO DIAS KM 490 BETIM MG 32670-790 BRAZIL GEAR SERVICES INC GAYNELL LAVIGNETTE PO BOX 3073 HARVEY LA 70059 GEARHEAD INTERNATIONAL LLC JARRETT THERIOT PO BOX 5159 ABITA SPRINGS LA 70420 GENERAL MARITIME AGENCY ADOLFO GUTIERREZ 11731 JONES ROAD SUITE 100 HOUSTON TX 77379 GENERAL POWER LIMITED INC MIRNA DIAZ 9930 NW 21ST ST MIAMI FL 33172 GENERAL SECURITY INSURANCE COMPANY 199 WATER STREET SUITE 2100 NEW YORK NY 10038 GENESIS MARINE LLC JOSH MCCAMY 919 MILAN STE. 2100 HOUSTON TX 77002 GENESIS MARINE, LLC 919 MILAM STREET, SUITE 2100 HOUSTON TX 77002 GENOVESE JOBLOVE BATISTA SC TORRE PROVINCIAL A PISO 8 AVIENDA FRANCISCO DE MIRANDA CHACAO CARACAS 1060 VENEZUELA GENTRY, BRUCE E ADDRESS REDACTED

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country GEORGE LEE LTD. GEORGE LEE 7 ROWLEY ROAD TOPSFIELD MA 01983 GEORGE, BUEAL THOMAS ADDRESS REDACTED GEORGEOPOULOS, JAMES ADDRESS REDACTED GEORGIA EMERGENCY ASSOCIATES SHANNON FORT PO BOX 10066 SAVANNAH GA 31412-0266 GETZ, MARSHALL C ADDRESS REDACTED GEZIK, GEOFFREY D ADDRESS REDACTED GIAMMOLVA, MICHELE M ADDRESS REDACTED GIBBONS, VELTON ADDRESS REDACTED GIBBS, ADAM W ADDRESS REDACTED GIBBS, ORA D ADDRESS REDACTED GIBERGA, SAMUEL A ADDRESS REDACTED GIL, DOUGLAS JAMES ADDRESS REDACTED GIL, ROBERTO ERNESTO ADDRESS REDACTED GILLETTE, KEVIN CHRISTOPHER ADDRESS REDACTED GIMBA SUPRIM ESCRIT E INFM LTD BARBARA MADEIROS CAETANO AV GRUPE 9697 BARUERI SP 06422-120 BRAZIL GIRASSOL APOIO MARITIMO LTDA MAURO JOSE MOREIRA ENGENHEIRO FABIO GOULART 163 - LLHA DA CONCEICAO NITEROL RJ 24050-090 BRAZIL GIROIR, RYAN J ADDRESS REDACTED GITREY, TYRONE E ADDRESS REDACTED GLAMOX AQUA SIGNAL CORPORATION KATHY JORDAN 1125 ALEXANDER COURT CARY IL 60013 PALM BEACH GLANDER INTERNATIONAL INC TODD MCKENNA 2401 PGA BLVD SUITE 236 GARDENS FL 33410 GLASER, BRITTNY MARIE ADDRESS REDACTED GLASS, ALVIN A ADDRESS REDACTED GLEICH, STEPHEN EDWARD ADDRESS REDACTED GLOBAL BONDHOLDER SVC CORP HARVEY ENG 65 BROADWAY SUITE 404 NEW YORK NY 10006 GLOBAL COMPANIES LLC DON DONOVAN 11 BROADWAY CHELSEA MA 02150 GLOBAL DATA SYSTEMS, INC. CHERRY THOMPSON PO BOX 53824 LAFAYETTE LA 70505 DEARBORN GLOBAL PUMP MARKETING DEBBIE PRUDEN-SUA RECIPIENT 6256 NORTH TELEGRAPH RD HEIGHTS MI 48127 GLOBAL SOFTWARE LLC JEANNE DI FERDINANDO 3301 BENSON DRIVE SUITE 201 RALEIGH NC 27609 GLOBAL SPEAK TRANSLATIONS FLOR DIMASSI PO BOX 271225 HOUSTON TX 77277 GLOBALSTAR USA LLC SUSAN HOCK - SUA RECIPIENT 1351 HOLIDAY SQUARE COVINGTON LA 70433 GLOBALTECH MARINE, LLC SHELLY CHILMAN 3020 OLD RANCH PKWY, SUITE 300 SEAL BEACH CA 90740 GLOECKNER, MATTHEW E ADDRESS REDACTED GMORLA SUL CONSTRUCAO CIVIL MIRTES GLASO AV FRANCISCO VALADARES 145 SALA 101 VILA IDEAL JUIZ DE FORA MG BRAZIL CUDAD DEL GNM MARITIMA INTERNACIONAL CESAR ALFREDO MEDINA ALBORES CALLE SAN CARLOS MANZANA 201 LOTE 10 RESIDENCIAL SAN MIGUEL CARMEN CM 24157 MEXICO GODWIN, RONALD V ADDRESS REDACTED GOFF, JEROME G ADDRESS REDACTED GOLDMAN SACHS LENDING PARTNERS LLC (NEW YORK, NY) C/O GOLDMAN, SACHS & CO. ATTN: THIERRY LE JOUAN 200 WEST STREET NEW YORK NY 10282-2198 GOMES, PATRICK NASCIMENTO ADDRESS REDACTED GOMES, RENATA CORTES ADDRESS REDACTED GOMOLKA, MATTHEW KYLE ADDRESS REDACTED GON PETRO COMERCIAL LTDA JOAO ELIAS GON AV PREFEITO ARISTEU FERREIRA DA SILVA 1270 MACAE RJ BRAZIL GONCALVES, DAVID JOSEPH ADDRESS REDACTED GONZALES, HAILEY VICTORIA ADDRESS REDACTED GONZALES, JUSTIN GARRETT ADDRESS REDACTED GONZALEZ AGUILAR, RAMON ADDRESS REDACTED GONZALEZ DUENAS, HERIBERTO ADDRESS REDACTED GONZALEZ GUZMAN, JESUS ADDRESS REDACTED GONZALEZ HUMBERT, LUIS GREGORIO ADDRESS REDACTED GONZALEZ RICARDEZ, NESTOR PAULINO ADDRESS REDACTED GONZALEZ TEJEDA, EDUARDO ADDRESS REDACTED GONZALEZ TRIANA, PEDRO ADDRESS REDACTED GONZALEZ VARGAS, MANOLO ADDRESS REDACTED GONZALEZ, JERMAIN ADDRESS REDACTED GONZALEZ, JESSIE ADDRESS REDACTED GOOD SAMARITAN MEDICAL CENTER BIBIANA PO BOX 741182 ATLANTA GA 30374 GOOD TIDE AGENCY SAS LUIS GUILLERMO MIRANDA MIRANDA 89 NO 75B38 OF 1 BARRANQUILLA COLOMBIA GOODINE, AARON CRAIG ADDRESS REDACTED GOODING, STEVEN E ADDRESS REDACTED GOODWIN, MARK JEFFREY ADDRESS REDACTED GOOGLE INC DEPT 34256 PO BOX 39000 SAN FRANCISCO CA 94139 GORDON & REES LLP DARLENE SCHLEGEL 1111 BROADWAY SUITE 1700 OAKLAND CA 94807 GORDON E DOVE SR LAURA SMITH ADDRESS REDACTED GORDON, CARLOS A ADDRESS REDACTED GORDON, EMERSON O ADDRESS REDACTED GORE, JERRY L ADDRESS REDACTED GORMAN, KARLA CHRISTINE ADDRESS REDACTED

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country GORMAN, PATRICK K ADDRESS REDACTED GORNTO, MICHAEL JAMES ADDRESS REDACTED GOSSETT, STEPHEN TYLER ADDRESS REDACTED GOTT, JOSHUA E ADDRESS REDACTED GOUGH, JOHN ADDRESS REDACTED GOVERNMENT OF THE REPUBLIC OF TRINIDAD AND INLAND REVENUE DIVISION, IRD TRINIDAD AND TOBAGO MINISTRY OF FINANCE 2-4 AJAX STREET TOWER PORT OF SPAIN TOBAGO GOVERNO DO ESTADO DO RIO SECRETARIA DE ESTADO DE FAZEND AV NILO PECANHA 175 RIO DE JANIERO RJ BRAZIL GOVERNOR CONTROL SYSTEMS INGRID MONROY 3101 SW 3RD AVE FT LAUDERDALE FL 33315 GRADY, CHRISTOPHER SCOTT ADDRESS REDACTED GRADY, LAMAR DONTA ADDRESS REDACTED GRAINGER MICHELLE C - SUA RECIPIENT PO BOX 419267 KANSAS CITY MO 64141-6267 GRAINGER SA DE CV CLAUDIA GARCIA AV DESARROLLO 500, FINSA GUADALUPE NUEVO LEON NL 67132 MEXICO GRAMMER, JAMES ROBERT ADDRESS REDACTED GRAND ISLE SHIPYARD KAREN GRIFFIN PO BOX 820 GALLIANO LA 70354 GRANT, MICHAEL MAXWELL ADDRESS REDACTED GREAT AMERICAN CAPITAL PARTNER ROBERT LOUZAN 11100 SANTA MONICA BLVD SUITE 800 LOS ANGELES CA 90025 GREAT AMERICAN INSURANCE COMPANY 301 E FOURTH STREET CINCINNATI OH 45202 GREAT MINDS SOFTWARE INC. ACCOUNT RECEIVABLE - SUA RECIP 1333A NORTH AVENUE #235 NEW ROCHELLE NY 10804 GREATER LAFOURCHE PORT COMMISS LINDSEY RISTER 16829 EAST MAIN STREET CUT OFF LA 70345 GREEN MARINE AND INDUSTRIAL SHARON BELLARD - PCARD SUA 1111 CENTRAL AVE. METAIRIE LA 70001 GREENWALDT, BRIAN A ADDRESS REDACTED GREENWAY ACQUISITIONS LLC C/O CORPORATION TRUST CENTER 1209 ORANGE STREET WILMINGTON DE 19801 GRIFFIN INDUSTRIES INC DWAIN VARISCO PO BOX 237 HOLDEN LA 70744 GRIFFIN, DONNIE J ADDRESS REDACTED GRIFFIN, HENRY ADDRESS REDACTED GRIGNARD COMPANY LLC NAMRATA PARIKH 505 CAPOLIANCO PLAZA RAHWAY NJ 07065 GRIJALVA, ANTHONY GERALD ADDRESS REDACTED GRILLO, NATALIE ADDRESS REDACTED GROCE, CHRISTINA ANN ADDRESS REDACTED CIUDAD DEL GRUAS MOVILES DEL GOLFO JUAN CARLOS BOCANEGRA LOPEZ TAMBORCITO DM 4500 S/N COLONIA RENOVACION VII CARMEN CM 24155 MEXICO GRUNDY, JACOB M ADDRESS REDACTED CIUDAD DEL GRUPO RH SA DE CV GENARO ALBERT RAIMEREZ HERRERA CALLE MORALES SAENZ S/N FRACCION AMIENTO ISLA CARMEN CAMPECHE 24190 MEXICO GRUPO ROALES SA DE CV RODOLFO ALFONSO ESQUIVEL RETORNO LAGUNA AZUL SUR SAN MIGUEL NO 4 CARMEN CP 24130 MEXICO

GRUPO SIMSA SA DE CV CALLE 27 #549 X 42 Y 46 COL SALVADOR ALVARADO ORIENTE MERIDA YUCATAN 97166 MEXICO GS HYDRO US INC SHARLA GROSSIE - SUA RECIPIENT 16405 AIR CENTER BLVD SUITE 400 HOUSTON TX 77032 GUARDADO CAMACHO, REGULO ADDRESS REDACTED GUERCIO, LINDA T ADDRESS REDACTED GUERRERO DE LA CRUZ, DIANA GISELLE ADDRESS REDACTED GUGGENHEIM SECURITIES LLC DANIEL DOYLE 330 MADISON AVE 18TH FLOOR NEW YORK NY 10017 GUIDANCE MARINE LLC - USA COLLEEN BENNETT 1313 MCARTHUR AVENUE HARVEY LA 70058 GUIDRY, DWAYNE PAUL ADDRESS REDACTED GUIDRY, JACE J ADDRESS REDACTED GUIDRY, JOHN EARLIN ADDRESS REDACTED GUILLORY, JILL G ADDRESS REDACTED GUILLOT, ALEXANDER AUSTIN ADDRESS REDACTED GULCHER, ZACHARY ANDREW ADDRESS REDACTED GULF BREEZE HOSPITAL KEITH ENGLISH PO BOX 402504 ATLANTA GA 30384-2504 GULF COAST AIR AND HYDRAULICS KAREN WILLIAMSON PO BOX 161134 MOBILE AL 36616 GULF COAST ATTORNEY AND INS GREG GROVER 5019 CASSIA DRIVE PENSACOLA FL 32506 GULF COAST PHYSICAL THERAPY KEN ACKERMAN PO BOX 3238 GULFPORT MS 39505 GULF COAST POWER & CONTROL INC JOE TAULLI 64080 HIGHWAY 1090 PEARL RIVER LA 70452 GULF CONTAINER LLC KYLE CHISHOLM 421 COBIA DRIVE CHALMETTE LA 70043 GULF COPPER & MANUFACTUR FANNY NAUTH PO BOX 4979 MSC #400 HOUSTON TX 77210 GULF EMERGENCY MANAGEMENT APMC LINDA POWELL PO BOX 919203 DALLAS TX 75391-9203 GULF ISLAND LLC TINA PIAZZA 16225 PARK TEN PLACE SUITE 280 HOUSTON TX 77084 GULF ISLAND SHIPYARDS LLC SHARON TAYLOR 111 BUNGE ST JENNINGS LA 70546 GULF ISLAND SHIPYARDS, LLC 16225 PARK TEN PLACE, SUITE 280 HOUSTON TX 77084 GULF ISLAND SHIPYARDS, LLC ATTN: RICHARD A. AGUILAR 601 POYDRAS STREET, 12TH FLOOR NEW ORLEANS LA 70130 GULF ISLAND SHIPYARDS, LLC C/O KREBS, FARLEY & DRY, PLLC ATTN DAVID KREBS 400 POYDRAS STREET, #2500 NEW ORLEANS LA 70130 ATTN: RICHARD A. AGUILAR; RUDY J. GULF ISLAND SHIPYARDS, LLC C/O MCGLINCHEY STAFFORD, PLLC CERONE; MARK J. CHANEY, III 601 POYDRAS STREET 12TH FLOOR NEW ORLEANS LA 70130 GULF ISLAND SHIPYARDS, LLC C/O MCGLINCHEY STAFFORD, PLLC ATTN: STEPHEN P. STROHSCHEIN 301 MAIN STREET SUITE 1400 BATON ROUGE LA 70801 GULF MARINE REPAIR CORP RICK WATTS 1800 GRANT STREET TAMPA FL 33605 GULF REGIONAL PATHOLOGISTS PA PO BOX 91498 MOBILE AL 36691 GULF SOUTH ARMATURE, INC. CINDY ROGERS PO BOX 4177 HOUMA LA 70361-4177 GULF SOUTH SERVICES, INC. MARY KEE HEASON C/O GULF COAST BANK & TRUST CO PO BOX 731152 DALLAS TX 75373-1152

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 28 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 31 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country GULLE, STACEY M. ADDRESS REDACTED GULOTTA'S INC. LOU ANNA DECOUX SUA RECIPIENT PO BOX 9808 NEW IBERIA LA 70562-9808 GUMBS, LINOLL M ADDRESS REDACTED GUSTAFSON, CHRISTOPHER MATTHEW ADDRESS REDACTED GUSTAVO MENDEZ MARTINEZ AMSY LEGASPI ADDRESS REDACTED GUTIERREZ ARREGUIN, ROBERTO GUSTAVO ADDRESS REDACTED GUTIERREZ, CARLOS A ADDRESS REDACTED GUYANA OIL AND GAS ASSOCIATION BOBBY GOSSAI JR 189 CHARLOTTE STREET LACYTOWN GUYANA GUZMAN HERNANDEZ, JOSE LUIS ADDRESS REDACTED GV DOS SANTOS ALPINISMO GERALMIR VIANNA RUA JOSE LOURENCO DE AZEVEDO SAO GONCALO RJ 24.421-300 BRAZIL GWP EIGHT TWELVE LLC SHEILA CANNATA PO BOX 206991 DALLAS TX 75320-6991 GWP EIGHT TWELVE, LLC ATTN: MANAGING DIRECTOR, TEXAS 2103 CITYWEST BLVD., SUITE 130 HOUSTON TX 77042 GWP JV HOLDINGS LLC EIGHT GREENWAY PLAZA PO BOX 206991 DALLAS TX 75320-6991 GYROMARSAT MARINE ELECTRONICS WANDERSON TAVEIRA AV VENEZUELA N 27 - SALAS RIO DE JANEIRO RJ 22640210 BRAZIL H & E EQUIPMENT SERVICES INC RINDY LENTZ PO BOX 849850 DALLAS TX 75284-9850 H & E EQUIPMENT SERVICES, INC MARY C CARDINI 7500 PECUE LANE BATON ROUGE LA 70809 H&P HIDRAULICA PNEUMATICA FREDERICO CARVALHO AV GUADALAJARA 1640 PRAIA CAMPISTA MACAE RJ 27923220 BRAZIL H. HENRIKSEN AS MARIA JOHANSEN TRAELEBORGVEIEN 15 TONSBERG 3112 NORWAY H2O INC HEATHER HENNIGAN-SUA RECIPIENT 841 VINCENT RD LAFAYETTE LA 70508 H2O OFFSHORE S DE RL DE CV ACCOUNTS RECEIVABLE CALLE 33 COL. TILA NO. 58 CIUDAD DEL CARMEN CAMPECHE 24170 MEXICO HAGEN ENT CLINIC APMC ACCOUNTS RECEIVABLE 505 DUNN STREET THIBODAUX LA 70360 HAGUE, JEFFRY D ADDRESS REDACTED HAGUE, JOSEPH CARL ADDRESS REDACTED HAGWOOD, OTTIS BRIAN MATTHEW ADDRESS REDACTED HAHN, DYLAN WILLIAM ADDRESS REDACTED HALIFAX SHIPYARD JARED NEWCOMBE 3099 BARRINGTON STREET HALIFAX NS BEK5M7 CANADA HALL, KEITH A ADDRESS REDACTED HALL, RYAN P ADDRESS REDACTED HALLIER, PAIGE LANE ADDRESS REDACTED HAMBURGER CAVALIER, SARAH A ADDRESS REDACTED HAMILTON, CHARLES H ADDRESS REDACTED HAMMOND, HERBERT RAY ADDRESS REDACTED HAMMOND, PAUL MERINO ADDRESS REDACTED HAMPTON ROADS RADIOLOGY DONNA PO BOX 844555 BOSTON MA 02284-4555 HAMPTON, KRANDAL DLLOYD ADDRESS REDACTED HAMPTON, MARCUS JAQUAN ADDRESS REDACTED HAMWORTHY PUMPS SINGAPORE WU RONG 15 BENOI CRESCENT SINGAPORE 629978 SINGAPORE HANCOCK WHITNEY BANK 701 POYDRAS ST, SUITE 3300 NEW ORLEANS LA 70139 HANKS, DARREN P ADDRESS REDACTED HANLEY, RYAN MICHAEL ADDRESS REDACTED HANNAY REELS INC TIM PRESTON 553 STATE ROUTE 143 WESTERLO NY 12193-0159 HANSA-FLEX USA SARAH MEGUESS 10821 TRAIN CT HOUSTON TX 77041 HANSEN, MICHAEL S ADDRESS REDACTED HANSEN, RANDEL JAMES ADDRESS REDACTED HARDY, WESLEY S ADDRESS REDACTED HARE, DAVID MARK ADDRESS REDACTED HARMELINK, MATTHEW ALLEN ADDRESS REDACTED HARMON, ROBERT EVERETT ADDRESS REDACTED HARP, JAMES O. ADDRESS REDACTED HARP, WILLIAM JAMES ADDRESS REDACTED HARRIED, DELAMIOUS CHANTEL ADDRESS REDACTED HARRIS COUNTY C/O LINEBARGER GOGGAN BLAIR & SAMPSON, LLP ATTN: TARA L. GRUNDEMEIER PO BOX 3064 HOUSTON TX 77253-3064 HARRIS COUNTY, ET AL PO BOX 3547 HOUSTON TX 77253-3547 HARRIS COUNTY, ET AL C/O LINEBARGER GOGGAN BLAIR & SAMPSON, LLP ATTN: TARA L. GRUNDEMEIER PO BOX 3064 HOUSTON TX 77253-3064 HARRIS, HEATHER L ADDRESS REDACTED HARRIS, MARLENE T ADDRESS REDACTED HARRIS, RYAN RUSSELL ADDRESS REDACTED HARRISON HEALTH PARTNERS HARILYN PO BOX 31001-2165 PASADENA CA 91110-2165 HARRISON, JONATHAN A ADDRESS REDACTED HARRISON, JOSEPH BAGGETT ADDRESS REDACTED HARRISON, KATHLEEN A ADDRESS REDACTED HARRISS, JOSEPH CHRISTOPHER ADDRESS REDACTED HARTLEY, ADAM S ADDRESS REDACTED HARTLEY, KEVIN M ADDRESS REDACTED HARTZELL AIR MOVEMENT ED GUILLOZET PO BOX 943 MIDDLETOWN OH 45044-0943 HARWOOD, ELIZABETH A ADDRESS REDACTED HASLEY, SAMUEL J ADDRESS REDACTED HATENBOER WATER B.V. MEREDITH VIS MERCURIUSWEG 8 3113 AR SCHIEDAM PO BOX 6013 ROTTERDAM 3002 AA NETHERLANDS HATFIELD, TERRY ADDRESS REDACTED HAWAII PILOTS ASSOCIATION CLARISSE EMPAYNADO PO BOX 721 HONOLULU HI 96808

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country HAWKINS, DARRELL BARTHOLOMEW ADDRESS REDACTED HAWKINS, PAUL DWIGHT ADDRESS REDACTED HAWTHORNE POWER SYSTEMS LYNDA MOSLEY 16945 CAMINO SAN BERNARDO SAN DIEGO CA 92127 HAYES, RICHARD ROBERT ADDRESS REDACTED HAYLOCK, JAMES DERRYL ADDRESS REDACTED UNITED HAYNES AND BOONE CDG LLP ANDREAS DRACOULIS 29 LUDGATE HILL LONDON EC4MJR KINGDOM UNITED HAYNES AND BOONE CDG, LLP A DRACOULIS 1 NEW FETTER LANE LONDON EC4A 1AN KINGDOM HAYNES AND BOONE CDG, LLP PATRICK L HUGHES 1221 MCKINNEY STREET SUITE 4000 HOUSTON TX 77010 HAYNES, JESSIE MURPHEY ADDRESS REDACTED HB RENTALS LC JILL SIGUR - SUA RECIPIENT DEPT 2131 PO BOX 122131 DALLAS TX 75312-2131 HDI GLOBAL SPECIALTY SE RODERBRUCHSTRASSE 26 HANNOVER 30655 GERMANY HEALTHY AIR DUCT CLEANING NICOLE FANGUY 103 OLYMPE DR HOUMA LA 70363 HEAUSLER, RICHARD SCOTT ADDRESS REDACTED HEBERT, ANTHONY P ADDRESS REDACTED HEBERT, CYNTHIA ANNE ADDRESS REDACTED HEFFNER, BYRON CALVIN ADDRESS REDACTED HEGLAS, JEFFREY ROBERT ADDRESS REDACTED HEIL, DANIEL SCOTT ADDRESS REDACTED HEIL, SAGE NICOLE ADDRESS REDACTED HEILBRON, CHASE G ADDRESS REDACTED HEISTAD, MACIE JOY ADDRESS REDACTED HELFER, BRYON A. ADDRESS REDACTED EAST HELIDEX LLC SAYANA CHINNI 186 PATERSON AVE STE 303 RUTHERFORD NJ 07073 HELLMERS, LESLIE E. ADDRESS REDACTED HELMS, CHRISTOPHER BRYAN ADDRESS REDACTED HELWIG CARBON PRODUCTS INC GALE KNIGHT - SUA RECIPIENT 8900 W TOWER AVE MILWAUKEE WI 53224 HENCHMAN, DANIEL P ADDRESS REDACTED HENDERSON, KENNETH DWIGHT ADDRESS REDACTED HENDRICKSON, ERIC M ADDRESS REDACTED HENRY, KHADIAN DWIGHT ADDRESS REDACTED HENRY, RAYMOND L ADDRESS REDACTED HERC RENTALS INC BRENTLY BYERS PO BOX 936257 ATLANTA GA 31193 HERCULES WIRE ROPE & SLING SUSAN GREGOIRE PO BOX 1769 HOUMA LA 70361 HERNANDEZ ABURTO, ARTURO JAIME ADDRESS REDACTED HERNANDEZ ALARCON, JUAN CARLOS ADDRESS REDACTED HERNANDEZ CRUZ, ALFONSO ADDRESS REDACTED HERNANDEZ DOMINGUEZ, DANI ADDRESS REDACTED HERNANDEZ FERNANDEZ, CHRISTIAN JOEL ADDRESS REDACTED HERNANDEZ GARCIA, LUIS DANIEL ADDRESS REDACTED HERNANDEZ GERONIMO, PEDRO ADDRESS REDACTED HERNANDEZ HERNANDEZ, ALEJANDRO ADDRESS REDACTED HERNANDEZ JACOME, AMADO ADDRESS REDACTED HERNANDEZ LARA, IVIS ADDRESS REDACTED HERNANDEZ MENDEZ, OMAR ERNESTO ADDRESS REDACTED HERNANDEZ MONTES, ROGELIO ALBERTO ADDRESS REDACTED HERNANDEZ ORTIZ, CARLOS ANTONIO ADDRESS REDACTED HERNANDEZ OSUNA, VICTOR ADAN ADDRESS REDACTED HERNANDEZ PEREZ, AMADEO ADDRESS REDACTED HERNANDEZ PEREZ, ANTONIO ADDRESS REDACTED HERNANDEZ REYES, ASDRUBAL DIONISIO ADDRESS REDACTED HERNANDEZ RODRIGUEZ, ANDREA ADDRESS REDACTED HERNANDEZ SALGADO, MIGUEL ANGEL ADDRESS REDACTED HERNANDEZ SEGURA, JORGE ADDRESS REDACTED HERNANDEZ SOLIS, DIEGO ORLANDO ADDRESS REDACTED HERNANDEZ, LUIS A ADDRESS REDACTED HERNANDEZ, LUIS ARMANDO ADDRESS REDACTED HERNANDEZ, TIFFANI JUNE ADDRESS REDACTED HERRERA GARCIA, LUIS VALENTE ADDRESS REDACTED HERRERA INFANTE, CARLOS ENRIQUE ADDRESS REDACTED HERRERA MENDOZA, JOSE ALEJANDRO ADDRESS REDACTED HERRERA OSORIO, MANUEL ADDRESS REDACTED HERRERA SILVA, ALAN HAZLITL ADDRESS REDACTED HERRERA, ALEXANDER JOSEPH ADDRESS REDACTED HERRINGTON, STEPHEN CHRISTOPHER ADDRESS REDACTED HEWERDINE, SETH M ADDRESS REDACTED HEWITT, JESSICA L ADDRESS REDACTED HICKEY, CHARLES THOMAS ADDRESS REDACTED

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country HICKS, DAVID W ADDRESS REDACTED HIDROPARTES COMERCIAL LTDA ANDREIA BRITO AV CARLOS TINOCO GARCIA 295 LOJA 1 RIVIERA FLUMINENSE MACAE RJ 27937 590 BRAZIL HIEBERT, EMERY GRANT ADDRESS REDACTED HIGGINBOTHAM, THOMAS COREY ADDRESS REDACTED HIGH CONNECT PATRICIA AV DAS AMERICAS, 5001 SALA 254 BARRA DA TIJUCA RIO DE JANEIRO RJ 22631-004 BRAZIL HIGHBRIDGE SCF SPECIAL SITUATIONS SPV, L.P. C/O HIGHBRIDGE CAPITAL MANAGEMENT, LLC 277 PARK AVE FL 23 NEW YORK NY 10172-3002 HIGHBRIDGE TACTICAL CREDIT MASTER FUND LP (FKA 1992 TACTICAL CREDIT MASTER FUND LP) C/O HIGHBRIDGE CAPITAL MANAGEMENT, LLC 277 PARK AVE FL 23 NEW YORK NY 10172-3002 HIGHMARK - SPENDING ACCT INVOICING TEAM PO BOX 223680 PITTSBURGH PA 15251-2680 HIGHMARK INC JEFF GREINER BLUE CROSS BLUE SHIELD PO BOX 382022 PITTSBURGH PA 15222 HILL, CHRISTOPHER ADDRESS REDACTED HILL, ERIC D ADDRESS REDACTED HILL, RICHARD DELMON ADDRESS REDACTED HILLER COMPANIES GAYE ARCURI- SUA RECIPIENT PO BOX 935434 ATLANTA GA 31193-5434 HINDS, MARK T ADDRESS REDACTED HINOJOSA, BRANDON ADDRESS REDACTED HITCHCOCK, JOHN A ADDRESS REDACTED HODGE, LAQUINTON RAYSHON ADDRESS REDACTED HODGES, MAKENNA GRACE ADDRESS REDACTED HODGINS, JORDAN SHEPHERD ADDRESS REDACTED HODGKINS, CRAIG W ADDRESS REDACTED HOFMANN, DOUGLAS P ADDRESS REDACTED HOLDEN, MAKAYLA KENNEDY ADDRESS REDACTED HOLLAND & KNIGHT LLP JOVI TENEV 31 WEST 52ND STREET NEW YORK NY 10019 HOLLAND, JOHN LINWOOD ADDRESS REDACTED HOLMES, MARK ANTHONY ADDRESS REDACTED HOLT CAT TERRY LUDZENSKI PO BOX 911975 DALLAS TX 75391-1975 HOLT, ALAN W ADDRESS REDACTED HOLT, MASON HAWK KENDALL ADDRESS REDACTED HOMELINK MADISON BRACE PO BOX 78492 MILWAUKEE WI 53278-0492 HONOR MARINE COMMUNICATIONS SOCO INFANTE 2120 MAIN STREET SAN DIEGO CA 92113 HOOD NORTHLAKE CHEVROLET DONNA - SUA RECIPIENT 69020 HWY 190 SERVICE RD COVINGTON LA 70433 HOOD S.A. ALICIA LUTZ 8 DE OCTUBRE 2355 OFFICE 501 MONTEVIDEO 11700 URUGUAY HOOVER FERGUSON LAURA PELLERIN PO BOX 732900 DALLAS TX 75373-2900 HOPPE MARINE GMBH BIANCA UTECHT KIELER STR 318 HAMBURG 22525 GERMANY HORACIO MORENO DE LA TORRE HORACIO MORENO DE LA TORRE ADDRESS REDACTED HORION, JESSE RANDALL ADDRESS REDACTED HORNADAY, MARY J ADDRESS REDACTED HORNBECK OFFSHORE SERVICES, INC. C/O KING & JURGENS, LLC ATTN: HENRY A KING 201 ST CHARLES AVE 45TH FLOOR NEW ORLEANS LA 70170 TRINIDAD & HORNBECK OFFSHORE TRINIDAD NISCHOL PERSAD #4 SUTTON STREET SAN FERNANDO TOBAGO HORNBECK POLITICAL ACTION COMM BETH LABROSSE 103 NORTHPARK BLVD COVINGTON LA 70433 HORNBECK, BLAIR ANGELLE ADDRESS REDACTED HORNBECK, JACOB TODD ADDRESS REDACTED HORNBECK, TODD M ADDRESS REDACTED HORNBECK, TROY A ADDRESS REDACTED HOSE POWER USA DOLORES FAULKNER-SUA RECIPIENT PO BOX 861777 ORLANDO FL 32886 HOSE TECH JESSICA KIFER - VP PO BOX 710429 SANTEE CA 92072 DEERFIELD HOSE-MCCANN COMMUNICATIONS ROLANDO MONTALVAN - SUA RECIPI 1241 W. NEWPORT CENTER DR BEACH FL 33442 HOUMA DIGESTIVE HEALTH MELANIE PARKER 1026 SCHOOL STREET HOUMA LA 70360 HOUMA EMA PO BOX 7338 PHILADELPHIA PA 19101-7338 HOUMA MACHINE AND MARINE LLC GISELE ANDRAS 813 HIGHWAY 182 HOUMA LA 70364 HOUMA RADIOLOGY ASSOC. INC. GUTHRIE 705 DUNN STREET HOUMA LA 70360 HOUMA TRACTOR & EQUIPMENT INC NONNA WHITNEY 165 SIMMONS DRIVE HOUMA LA 70363 HOUSTON CAD PO BOX 112 CROCKETT TX 75835-0112 HOUSTON CAD C/O LINEBARGER GOGGAN BLAIR & SAMPSON, LLP ATTN: TARA L. GRUNDEMEIER PO BOX 3064 HOUSTON TX 77253-3064 HOUSTON COUNTY C/O PERDUE BRANDON FIELDER COLLINS & MOTT ATTN: TAB BEALL PO BOX 2007 TYLER TX 75710-2007 HOUSTON COUNTY APPRAISAL DIST 1512-B EAST LOOP 304 PO BOX 112 CROCKETT TX 75835 HOUSTON COUNTY APPRAISAL DISTRICT 1512-B E. LOOK 304 PO BOX 112 CROCKETT TX 75835-0012 HOUSTON COUNTY ELECTRIC CO-OP, INC. PO BOX 52 CROCKETT TX 75835 HOUSTON NORTHWEST MEDICAL CENT PO BOX 849782 DALLAS TX 75284 HOUSTON NORTHWEST OPERATING MICHAEL LIBA PO BOX 849782 DALLAS TX 75284-9782 HOUSTON PILOTS KIMBERLY ZAWACKI 203 DEERWOOD GLEN DRIVE DEER PARK TX 77536 HOUTTUIN DBA SES INT'L BV BAS EERTMAN 7491 GA DELDEN SLUISSTRAAT 12 NETHERLANDS HOWARD, ANDERSON F ADDRESS REDACTED HR OIL RECURSOS HUMANOS LTDA JOSE MACHADO RUA VEREADOR ODILON BRAGA RIO DE JANEIRO RJ 20931-680 BRAZIL HRITZ, JOHN JOSEPH ADDRESS REDACTED 11B-5 ANDAR HSBC SEGUROS S A RONALDO SANTOS OF KNTS PREDIO PALACIO AVENIDA TRAVESSA OLIVEIRA BELO CENTRO CURITIBA PR 22290-160 BRAZIL

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country HSEQ CONSULTORIA LTDA DICLER FERREIRA RUAS DOS FUNCIONARIOS 972 PARTE BOQUEIRAO SAQUAREMA RJ 1189-0 BRAZIL HUBBELL ELECTRIC HEATER CO CHERYL BLANCO PO BOX 288 STRATFORD CT 06615 HUDSON, DONNELL ADDRESS REDACTED HUERTA CARVANTES, EDUARDO ADDRESS REDACTED HUGG AND HALL EQUIPMENT NATALIE P. - SUA RECIPIENT PO BOX 194110 LITTLE ROCK AR 72219 HUGHES, CHRISTY H ADDRESS REDACTED HUGHES, JOHN W ADDRESS REDACTED BAIRRO VOLTA HUISMAN DO BRASIL SERVICOS JOSE REINALDO PASQUALIN BOZZA RUA PREFEITO MANOEL EVALDO MULLER 4373 GRANDE NAVEGANTES SC 88371-790 BRAZIL HUISMAN NORTH AMERICA SERV LINDA 2502 WEHRING ROAD ROSENBERG TX 77471 HUMBERT TAMEZ, ABRAHAM ADDRESS REDACTED HUNSADER, PAUL CHARLES ADDRESS REDACTED HUNT, KATHERINE MARIE ADDRESS REDACTED HUNTER, KELLY JOSEPH RONALD ADDRESS REDACTED HURM, ASHLEE CLINTON ADDRESS REDACTED HUVAL, JIMMIE CHARLES ADDRESS REDACTED HY EQUIPAMENTOS INDUSTRIAIS PAULO AUGUSOT LEONEL RUA DR. GONCALVEIS LIMA 734 RIO DE JANEIRO RJ 21555-500 BRAZIL HYDRADYNE LLC DONNA BREAUX PO BOX 974799 DALLAS TX 75391-4799 HYDRO DYNAMICS SOLUTIONS LLC AMBER THOMAS 258 EQUITY BLVD HOUMA LA 70360 HYLTON, APRIL MARIE ADDRESS REDACTED HYNES, PAUL M ADDRESS REDACTED HYUNDAI GLOBAL SERVICE AMERICA RYAN KIM 7206 HARMS ROAD HOUSTON TX 77041 IAN-CONRAD BERGAN INC. DANIELLE HOLICEK - SUA REC 3119 NORTH DAVIS HIGHWAY PENSACOLA FL 32503 IBAMA INST BRAS DO MEIO AMB SCEN SETOR CLUBES ESP NORTE BRASILIA 70818-900 BRAZIL IBERIA PARISH 300 IBERIA STREET SUITE 120 NEW IBERIA LA 70560-4584 ICE SYSTEMS, INC ERIC HENRIKSEN PO BOX 11126 HAUPPAUGE NY 11788 ICL INVESTIGATIONS CHARLES MEACHAM 10990 FORT CAROLINE ROAD #350548 JACKSONVILLE FL 32235 DUQUE DE ICONIC LUBRIFICANTES ROGERIO PERAZO RUA SILESIA, 3501 PARTE CAMPOS ELISEOS CAXIAS RIO DE JANIERO RJ BRAZIL ICRO TECHNOLOGICA E PRODUCTOS DANIRA AV NOVA YORK 381 BONSUCESSO RIO DE JANEIRO RJ 21041 040 BRAZIL IEM POWER SYSTEMS LLC BRANDI KNIGHT 11902 CENTRAL PARKWAY JACKSONVILLE FL 32224 IHS GLOBAL INC SUE MULCAHY-SUA RECIPIENT PO BOX 847193 DALLAS TX 75284-7193 ILIULIUK FAMILY AND HEALTH SER STEPHANIE PO BOX 144 UNALASKA AK 99685 ILLINOIS NATIONAL INSURANCE COMPANY 175 WATER STREET 18TH FLOOR NEW YORK NY 10038 IMAGING CENTER OF LOUISIANA 8338 SUMMA AVE, SUITE 100 BATON ROUGE LA 70809 IMAGING CENTER OF SOUTH LA. RENEE GAUTREAUX 114 NEUROSCIENCE CT GRAY LA 70359 IMATEB INSTITUTO DE METROLOGIA ANDERSON DE LIMA JORGE RUA JOAO TORQUATO BONSECESSO RIO DE JANEIRO RJ 21032150 BRAZIL IMC GULF COAST GASTROENTEROLOG 188 HOSPITAL DRIVE SUITE 405 FAIRHOPE AL 36532 IMC INDUSTRIAL MEDICAL CLINIC ADDIE FOWLER INDUSTRIAL MEDICAL CLC DAPHNE PO BOX 11984 BIRMINGHAM AL 35202 IMELDA JOSEFINA BOLANOS IMELDA JOSEFINA BOLANOS HERNAN ADDRESS REDACTED IMPORTADORA DE FILTROS LUIS CHAPA ZARAGOZA OTE 301 COL CENTRO ALLENDE NUEVO LEON 67350 MEXICO IMS, INC. EVE ROE - SUA 2604 ANDALUSIA BLVD CAPE CORAL FL 33909 TRINIDAD & IMTECH MARINE (TRINIDAD) CLYDRENE KELSHALL ATLANTIC PLAZA UNIT 2.01 POINT LLSAS TOBAGO IMTT JEAN BARRAS DEPT.# 0108 PO BOX 120108 DALLAS TX 75312-0001 INCHCAPE SHIPPING SERV MOBILE SUSAN THOMAS 1210 HILLCREST RD MOBILE AL 36695-3943 CROSS TRINIDAD & IN-CORR-TECH LTD (TRINIDAD) DERRON RAMLOGAN RODRIGUEZ AVENUE 15-17 CIPERO ROAD CROSSING SAN FERNANDO TOBAGO INDEMNITY INSURANCE COMPANY OF NORTH AMERICA 436 WALNUT STREET PHILADELPHIA PA 19106 INDEPENDENT DIVING SERVICES SAMANTHA CORLIS 100 HERMAN DR BELLE CHASSE LA 70037 INDIAN HARBOR INSURANCE COMPANY 100 CONSTITUTION PLAZA HARTFORD CT 06103 INDUSTRIAL BABBITT BEARING DAN TAPIA PO BOX 458 GONZALES LA 70707-0458 INDUSTRIAL DIESEL SERVICE KATY LEDET PO BOX 778 GALLIANO LA 70354 INDUSTRIAL ELECTRICAL SUPPLY TROY BOOTS PO BOX 2673 ORANGE BEACH AL 36561 LOS PINOS INDUSTRIAL MARITIMA DE VERACRU ALVARO SANCHEZ AVENIDA GUADALUPE VICTORIA NO 185 VERACRUZ 91870 MEXICO INDUSTRIAL RELIABILITY BRIAN WARWICK PO BOX 1379 PALATKA FL 32177 INDUSTRIAL SOUND AND VISION BEN MEYERS 508 MAGNOLIA RIDGE COURT MADISONVILLE LA 70447 INFANZON MENDEZ, JUAN CARLOS ADDRESS REDACTED INFECTIOUS DISEASE ASSOCIATES 4315 HOUMA BLVD METAIRIE LA 70005 INFECTIOUS DISEASE GROUP, P.A. 1717 NORTH E STREET #439 PENSACOLA FL 32501-6337 INFINITY ENERGY SERVICES LLC SHELLI USIE 122 BOURG LAROSE HWY BOURG LA 70343 INFLAGASES LTDA SIMONE FONTES RUA TEIXEIRA RIBIERO 246 RIO DE JANEIRO RJ BRAZIL INFOR (US) INC CASH APPLICATIONS DEPARTMENT NW 7418 PO BOX 1450 MINNEAPOLIS MN 55485-7418 CIUDAD DEL INGENIERIA APLICADA FRANCISCO JAVIER CASTILLO CALLE CRIOLLO NO 28 ENTRE ARABE Y CUARTO CARMEN CM 24158 MEXICO INGRAM BARGE COMPANY LLC ATTN: DANIEL P MECKLENBORG 4400 HARDING PIKE NASHVILLE TN 37205 INGRAM BARGE COMPANY, LLC DANIEL P. MECKLENBORG 4400 HARDING PIKE NASHVILLE TN 37205

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country IN-MAR SOLUTIONS LLC TOBY WHITFIELD 3011 S. RUBY AVE GONZALES LA 70737 INMARSAT MOBILE NETWORKS INC DEBBIE MERCER PO BOX 21062 NEW YORK NY 10087-1062 INMARSAT SOLUTIONS (US) INC JEANIE HAYNES PO BOX 21062 NEW YORK NY 10087-1062 PACHUCA DE INMOBILIARIA MARQCAST SA DE CV JOSE FRANCISCO MARQUEZ MONTES CALLE HIDALGO #705 COL CENTRO SOTO HIDALGO CP 42000 MEXICO INOVE SOLUCOES COMERCIO REGINA FONSECA RUA DIAS DA CRUZ 188 LOJA 143 SS H RIO DE JANEIRO RJ 20720-900 BRAZIL INSECT BYE DEDETIZACAO LEONARDO TEIXEIRA RUA MIRATAIA N 8 RIO DE JANEIRO RJ 22770190 BRAZIL VILLAHERMO INSIDE BUSINESS MEXICO SA DE C 407 MARCELINO CABIECES C/2DA CERRADA DE MARCELINO CABIECES SA CENTRO TB 86168 MEXICO INSIGHT DIRECT USA INC. JIM TREVINO PO BOX 731069 DALLAS TX 75373 INSIGHT DIRECT USA, INC MICHAEL WALKER 6820 S HARL AVE TEMPE AZ 85283 INSTALLERS INC ROGER PAREDES 13433 SEYMOUR MYERS SUITE 12 COVINGTON LA 70434 INSTITUTO BRASIL ESTADOS UNIDO MARCELO MONROY BENTES AVENIDA NOSSA SENHORA DE COPAC RIO DE JANEIRO RJ 22050-001 BRAZIL INSTITUTO DE CIENCIAS NAUTICAS ALEXANDRA AV RIO BRANCO 18 15 ANDAR CNTR RIO DE JANEIRO RJ 20090 BRAZIL INSTITUTO FEDERAL DE TELECOMUNICACIONES INSURGENTES SUR 1143, BENITO 03720 MEXICO (IFETEL) JUÁREZ, COL. NOCHEBUENA CITY MEXICO INSTREAM LLC BEN PON 240 GREAT CIRCLE ROAD SUITE 342 NASHVILLE TN 37228 INTEGRICERT LLC HANNA BOUDREAUX 608 HANGAR DRIVE NEW IBERIA LA 70560 CD DEL CARMEN INTER DEL CARIBE SA DE CV RAMON REYES MEJIA CALLE 20-A NO 17 COL PALLAS CAMP 24140 MEXICO FORT INTERFORCE INC CAPT ANDY SCHEER 801 SEABREEZE BLVD LAUDERDALE FL 33316 INTERNAL REVENUE SERVICE DEPARTMENT OF TREASURY OGDEN UT 84201-0045 INTERNAL REVENUE SERVICE ATTN: CENTRALIZED INSOLVENCY OPERATION 2970 MARKET ST. PHILADELPHIA PA 19104-5016 INTERNAL REVENUE SERVICE ATTN: CENTRALIZED INSOLVENCY OPERATION PO BOX 7346 PHILADELPHIA PA 19101-7346 INTERNAL REVENUE SERVICE HOUSTON DIVISION 1919 SMITH STREET HOUSTON TX 77002 INTERNATIONAL ALIGNMENT SPEC CAROL SANDLIN - SUA RECIPIENT PO BOX 1953 HOUMA LA 70361 INTERNATIONAL CARGO GEAR SHARON LUCIANO 459 COLUMBUS AVE SUITE 121 NEW YORK NY 10024 UNITED INTERNATIONAL MARINE CONTRACTO ANN BARNATT 5 LOWER BELGRAVE STREET LONDON SW1W ONR KINGDOM INTERNATIONAL MARINE SYS LLC DANA PELLEGRIN 16201 EAST MAIN STREET CUT OFF LA 70345 INTERNATIONAL PAINT INC. IP ORDER DESK NOL - SUA PO BOX 847202 DALLAS TX 75284-7202 INTERNATIONAL SHIP REPAIR & MA KIM MEDLIN 1616 PENNY STREET TAMPA FL 33605 INTERNATIONAL SHIPPING AGENCY ACCOUNTS DEPARTMENT PO BOX F 40302 FREEPORT GB BAHAMA UNITED INTERNATIONAL SUPPORT VESSEL 12 CARTHUSIAN STREET LONDON EC1M 6EB KINGDOM INTERNATIONAL SURETIES, LTD 701 POYDRAS STREET, SUITE 420 NEW ORLEANS LA 70139 INTERSEA AMBIENTAL COMERCIO MONICA BERALDINI RODOVIA AMARAL PEIXOTO S/N KM 167 FAZ J DO MUTUM MACAE RJ 27973-030 BRAZIL INTERSTATE ALL BATTERY CE DAVID CLEMENTS 1539 MLK BLVD SUITE 115 HOUMA LA 70360 INTERTEK USA INC CRYSTAL ROBERTSON PO BOX 416482 BOSTON MA 02241-6482 INTERTEL INC MELISSA GILLYON PO BOX 771470 ST LOUIS MO 63177-9816 INTRACOASTAL ENVIRONMENTAL LLC LUIS PEREIRA 1575 MAIN STREET UNIT 5 ATLANTIC BEACH FL 32233 INTRADO DIGITAL MEDIA LLC JEFF WOLTMAN 11808 MIRACLE HILLS DR OMAHA NE 68154 INVESCO GLOBAL SHORT TERM HIGH YIELD BOND ATTN: ELIZABETH DESPALN/ MARK DOWNERS ETF C/O INVESCO CAPITAL MANAGEMENT LINDSAY 3500 LACEY ROAD, 8TH FLOOR GROVE IL 60515 INVESHARE INC PAULA JONES-SUA RECIPIENT PO BOX 191308 ATLANTA GA 31119-1308 IOTY FARIA, CLEBER HERBERT ADDRESS REDACTED IPREO LLC DAVID FARKAS PO BOX 26886 NEW YORK NY 10087-6886 IPS POWERFUL PEOPLE AMIN GOMEZ ANDRES BELLO 45 PISO 18 OFFICE A MEXICO CITY 11550 MEXICO IRELAND, WILLIAM T ADDRESS REDACTED IRMAOS BALTAZAR LTDA FELIPE MANOEL F AIRES AV PRESIDENTE SODRE 44 CENTRO MACAE RJ 27913 080 BRAZIL IRMAOS BRITTO REPRESENTACOES LUCIANO BRITO FILHO BUA SA ALBUQUERQUE, 454 MACAEIO, AL 57022-180 BRAZIL IRON MOUNTAIN RECORDS TRINESS KUHN PO BOX 915004 DALLAS TX 75391-5004 IRONSHORE SPECIALTY INSURANCE COMPANY 28 LIBERTY STREET 4TH FLOOR NEW YORK NY 10005 ISLE OF MAN DEPT OF TRADE SCOTT TOWNSEND PEEL ROAD DOUGLAS IM1 5EH ISLE OF MAN ISMAY, BRENT EDWARD ADDRESS REDACTED ISN SOFTWARE CORPORATION PO BOX 841808 DALLAS TX 75284-1808 COL TARIMOYA ZONA ISOCONTENEDORES MARITIMOS FABIOLA CARRILLO AV PRINCIPAL LOTE 10 MANZANA 5 ZONA 7 URBANA VERACRUZ 91855 MEXICO ISR PHYSICAL THERAPY OF HOUMA KAREN THOMAS 478 CORPORATE DRIVE HOUMA LA 70360 ISRAELSON, CHRISTOPHER W ADDRESS REDACTED RUA SENADOR DANTAS 74 - SOBRE- 20031-205 RIO DE ITAU UNIBANCO LOJA CENTRO JANEIRO - RJ BRAZIL I-TECH COMPANY LLC SHERRY YING 42978 OSGOOD ROAD FREMONT CA 94539 ITH ENGINEERING INC ANDREA SCHULTZ - SUA RECIPIENT 5000 PRIME PARKWAY MCHENRY IL 60050 IUS NATURA CAL LTDA KARINE MAGALHAES RUA SAO JOAO EVANGELISTA N 359 BAIRRO SAO PEDRO BELO HRZNT MG RIO DAS OSTRAS RJ 28890 BRAZIL MINAS IUS NATURA LTDA KARINE MAGALHAES RUA SAO JOAO EVANGELISTA, 359 BAIRRO SAO PEDRO GERAIS BELO HORIZONTE 30.330-152 BRAZIL

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country IVANICHEV, VITALIY O ADDRESS REDACTED IVONNE BAEZA OCAMPO SRA. IVONNE BAEZA ADDRESS REDACTED IZQUIERDO CHABLE, GAMALIEL ADDRESS REDACTED IZQUIERDO PEREZ, VICENTE ADDRESS REDACTED J & A ENTERPRISES CHRISTINE MICHELINI 16 BROADWAY SALEM MA 01970 J AND N ASSESSORIA E CONSULTOR MARIA REGINA NASSIF JUNQUEIRA RUA JOAQUIM DE PAULA SOUZA 989-102 CAMPINAS SAO PAULO RJ 13026-210 BRAZIL J JORGE REFRIGERACAO TEIXEIRA MARINALDO AMADO DA SLIVA JR RUA O2 QUADRA E LOTEAMENTO PARAISO N 462 BAIRRO TRAPICHE MACAE RJ 27985 973 BRAZIL J WHITEHEAD AND ASSOCIATES INC JOEL WHITEHEAD 3433 HIGHWAY 190 #141 MANDEVILLE LA 70471 J.A.M. DISTRIBUTING COMPANY CHRIS HADLEY - SUA RECIPIENT 7010 MYKAWA HOUSTON TX 77033 JACKSON ANESTHESIA ASSOCIATES CHRIS LOWRY 1151 N STATE STREET SUITE 311 JACKSON MS 39202 JACKSON COUNTY PORT AUTHORITY SHANNON PO BOX 70 PASCAGOULA MS 39568-0070 JACKSON HUNTER ADDRESS REDACTED JACKSON HUNTER ADDRESS REDACTED JACKSON, CARDELL ADDRESS REDACTED JACKSON, CHARLES J ADDRESS REDACTED JACKSON, JEROME F ADDRESS REDACTED JACKSON, RALPH A ADDRESS REDACTED JACOB HARPER CLARKE JACOB CLARKE ADDRESS REDACTED JACOBS, JOHN EDWIN ADDRESS REDACTED JAIRAM, CLIFF ADDRESS REDACTED JAMBO CONSULTORIA E INTERMEDIA MARIO HENRIQUE JAMBO RUA SA E ALBUQUERQUE 350 JARAGUA MACEIO ALBRAZIL JAMES A. MOUNGER, PLC JAMES A. MOUNGER 1539 JACKSON AVENUE SUITE 600 NEW ORLEANS LA 70130 JAMES F MORELEWICZ JIM MORELEWICZ ADDRESS REDACTED JAMES, ADRIAN DEMETRIUS ADDRESS REDACTED JAMES, DESLEY OVERTON ADDRESS REDACTED JAMES, JACKQULINE DOMINIQUE ADDRESS REDACTED JAMES, JONATHAN T ADDRESS REDACTED JAMES, LEROY ADDRESS REDACTED JANET, CARY J ADDRESS REDACTED JANSSEN, BRUCE ERNEST ADDRESS REDACTED JARRETT, CHARLES O ADDRESS REDACTED JASMINOY STANISCIA, ANDRES ADDRESS REDACTED JAT NITEROI ELETROMECANICA LTD JOSE LUIS SOUZA DE COSTA RUA BARAO DE MAUA 242 PONTA DE AREIA NITEROI RJ 24000 000 BRAZIL SAO JAT TECNICA NAVAL EIRELLI ME RICARDO CUNHA AVENIDA EUGENIO BORGES 284 IOJA 05 GONCALO RIO DE JANEIRO RJ 24753-000 BRAZIL JAVIER TRINIDAD, MANUEL FRANCISCO ADDRESS REDACTED CALLE 38 S/N, BODEGA 5, ENTRE CIUDAD DEL JB DEL GOLFO DE MEXICO SA DE CARLOS GUILLEN HERNANDEZ ECHEVERRIA CASTELLOT COL REVOLUCION CARMEN CAMPECHE 24115 MEXICO JBOX LLC ROBERT JENSEN 3832 SPENCER STREET HARVEY LA 70058 SAO JOSE DOS JC DA SILVA AGRICULTURA DANIEL GOMES AV IRONMAN VICTOR GARRIDO N 140 - SL - 03 CAMPO SP 12244-392 BRAZIL

JC FRAGOSO REPAROS ME THIAGO LUIZ DA SILVA ESTRADA JOSE DO MUTUM N SN COMPLEMENTO KM167 BAIRRO LAGOA MACAE RJ 27930 850 BRAZIL JEAN, FRITZ S ADDRESS REDACTED JEFFERSON ORTHOPEDIC CLINIC JOHN PIERCE 920 AVENUE B MARRERO LA 70072 JEFFERSON PATHOLOGY LLC PO BOX 884 GREENVILLE TX 75403-0884 JEFFERY VAN WRIGHT ADDRESS REDACTED JEFFERY VAN WRIGHT C/O BLAKE JOENS LAW FIRM, LLC ATTN: DAVID C. WHITMORE 701 POYDRAS STREET SUITE 4100 NEW ORLEANS LA 70139 JEFFERY VAN WRIGHT C/O BLAKE JONES LAW FIRM ADDRESS REDACTED JEL REFGRIGERACAO LTDA JOZIAS RUA ATI 245 TANQUE JACAREPAGUE RIO DE JANEIRO RJ 22735 155 BRAZIL JENKS, RICHARD LOISEL ADDRESS REDACTED JENNISON, CASEY LITCHFIELD-PURDON ADDRESS REDACTED JENSEN HUGHES INC FRANK BATELKA PO BOX 62680 BALTIMORE MD 21264-2680 JENSEN, RYAN PATRICK ADDRESS REDACTED JERALD W. STETTNER ADDRESS REDACTED JEROME MAUTERER SR JEROME MAUTERER SR ADDRESS REDACTED JEROME STENEHJEM M D ALICIA ADDRESS REDACTED JERONIMO SOLIS, FLORICEL ADDRESS REDACTED JERRY L. LARPENTER, SHERIFF AN PO BOX DRAWER 1670 HOUMA LA 70361 JIM WELSH INC RICHARD WELSH 1020 LA CRETE LANE BATON ROUGE LA 70810 JIMENEZ GARCIA, JUAN GUILLERMO ADDRESS REDACTED JIMENEZ MADRIGAL, JESUS MANUEL ADDRESS REDACTED JIMENEZ RODRIGUEZ, ALBERTO ADDRESS REDACTED JIMENEZ, RICHARD W WALTER ADDRESS REDACTED JIMENEZ, ROBYN GABRIELLA ADDRESS REDACTED CIUDAD DEL JK SERVICIOS Y SUMINISTROS CP JESUS REYES LOPEZ CALLE 57 NO 1 COLONIA MORELOS CARMEN CM 24115 MEXICO JLP CREDIT OPPORTUNITY MASTER FUND LTD C/O PHOENIX INVESTMENT ADVISORS LLC ATTN: BOB BECK / ROBERT YOUREE 420 LEXINGTON AVENUE, SUITE 2040 NEW YORK NY 10170 JOEL CATERING LEILAH MAGIER 1201 CONVENTION CENTER BLVD NEW ORLEANS LA 70130 JOEL CUPIL OBANDO ANDRES IZQUIERDO ADDRESS REDACTED

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 34 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 37 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country JOEL DIAZ JIMENEZ ANDRES DEL C. PRIEGO SOLIS ADDRESS REDACTED JOE'S SEPTIC CONTRACTORS, INC. WENDY HEBERT PO BOX 336 CUT OFF LA 70345 JOHN C HILDENBRAND IV LLC KIM LEGENDRE 604 N ACADIA ROAD SUITE 508 THIBODAUX LA 70301 JOHN H. CARTER CO. INC. PATRICIA COLEMAN DEPT 161 PO BOX 4869 HOUSTON TX 77210-4869 JOHN HENRY TAB THOMPSON JOHN HENRY THOMPSON 1200 JENNINGS COURT COLUMBIA SC 29204 JOHN W. STONE OIL DIST. LLC ANNA GERHOLD DEPT 322 PO BOX 4869 HOUSTON TX 77210-4869 JOHN WILEY & SONS, INC. LYNN VANDUYN PO BOX 416502 BOSTON MA 02241-6502 JOHN, JISON K ADDRESS REDACTED JOHNNY'S PROPELLER SHOP CHERYL PO BOX 2237 MORGAN CITY LA 70381-2237 JOHNSON CONTROLS FIRE PROTECT LAUREN KEEHAN DEPT CH 10320 PALENTINE IL 60055-0320 JOHNSON, ALEISHA KRISTINA ADDRESS REDACTED JOHNSON, CALVIN RAY ADDRESS REDACTED JOHNSON, DONALD R ADDRESS REDACTED JOHNSON, EDWARD DE'SHUN ADDRESS REDACTED JOHNSON, HUNTER RUSSELL ADDRESS REDACTED JOHNSON, JOSEPH ADDRESS REDACTED JOHNSON, JUSTIN BLAKE ADDRESS REDACTED JOHNSON, KAMUELA C ADDRESS REDACTED JOHNSON, MICHAEL R ADDRESS REDACTED JOHNSON, NICHOLAS S ADDRESS REDACTED JOHNSON, ORAL HERBIN ADDRESS REDACTED JOHNSON, PAUL BRADFORD ADDRESS REDACTED JOHNSON, STEPHEN T. ADDRESS REDACTED JOHNSON, TERRANCE LEE ADDRESS REDACTED JOHNSON, YACOUBIAN & PAYSSE MEREDITH COCHRAN 701 POYDRAS ST. STE 4700 NEW ORLEANS LA 70139-7708 JOHNSTON, AARON A ADDRESS REDACTED JOHNSTON, ASHLEE ADDRESS REDACTED JONES FUSSELL LLP WENDIE PO BOX 1810 COVINGTON LA 70434 JONES FUSSELL, LLP 1001 SERVICE ROAD EAST US HIGHWAY 190 SUITE 103 COVINGTON LA 70433 JONES MATUTE, JERRY LEE ADDRESS REDACTED JONES PHYSICAL THERAPY DARLENE 389 HWY 21, SUITE 403 MADISONVILLE LA 70447 JONES WALKER LLP MICK STEIN 201 ST CHARLES AVE 51ST FLOOR NEW ORLEANS LA 70170-5100 JONES, DERONY ADDRESS REDACTED JONES, HENRY ARTHUR ADDRESS REDACTED JONES, JACOB H ADDRESS REDACTED JONES, JOHN ROLAND ADDRESS REDACTED JONES, JUSTIN MICHAEL ADDRESS REDACTED JONES, RADLEY WINGO ADDRESS REDACTED JONES, SKYLAR L ADDRESS REDACTED JONES, STEVEN M ADDRESS REDACTED JONES, THOMAS W ADDRESS REDACTED JORGE ALBERTO SEVILLA QUIN CONCHY MONTEJO DE LOS SANTOS ADDRESS REDACTED LICS. EULOGIO ARMENTA, GRANCISCO JAVIER JOSE CARLOS TIZNADO MALDONADO GAZIOLA BELTRAN, Y MARTIN LEON SALCIDO ADDRESS REDACTED JOSE DE JESUS DIAZ CERVANTES JOSE DE JESUS DIAZ CERVANTES ADDRESS REDACTED JOSE FRANCISCO ALEGRIA AUDELO JOSE FRANCISCO ALEGRIA AUDELO ADDRESS REDACTED JOSE GUADALUPE ALVAREZ LIC CP GUADALUPE PALMA JAVIER ADDRESS REDACTED JOSE JESUS OROZCO METELIN JOSE JESUS OROZCO METELIN ADDRESS REDACTED JOSE LUIS MARTINEZ CARRILLO JOSE LUIS MARTINEZ CARRILLO ADDRESS REDACTED JOSE MANUEL CONTRERAS MENDEZ EN MANOS DE AMADOR PUENTE ESPARZA ADDRESS REDACTED JOSE MARURI JOSE MARURI ADDRESS REDACTED JOSEPH, JEFFREY ADDRESS REDACTED JOSEY, CHRISTOPHER ADDRESS REDACTED JP MORGAN CHASE BANK NA RORY NOWAKOWSKI PO BOX 26040 NEW YORK NY 10087-6040 JPMORGAN CHASE BANK NA 452 FLORIDA ST, FLOOR 01 BATON ROUGE LA 70801 2500 WESTFIELD JPMORGAN CHASE COMMERCIAL ELIZABETH ADLER CARD SERVICES LOCK BOX 4471 MAIL CODE IL1-6030 DRIVE ELGIN IL 60123-7836 JPMORGAN SECURITIES LLC JPMORGAN CHASE BANK PO BOX 13658 NEWARK NJ 07188-0658 DUQUE DE JRF CALIBRACAO E SERVICOS MARCIA CRISTINA SILVA ESTRADA FAZENDINHA DO RECREIO CAMPOS ELYSIOS CAXIAS RJ 25230-022 BRAZIL JUAN CARLOS HERMIDA RESEND UBALDO BATTA ADDRESS REDACTED JUAN ISRAEL VIDAL ORTIZ JUAN ISRAEL VIDAL ORTIZ ADDRESS REDACTED JUDD, THOMAS W ADDRESS REDACTED JUDICE, CHRISTOPHER MICHAEL ADDRESS REDACTED JUDICE, SEAN VICTOR ADDRESS REDACTED EN MANOS DE LIC. MIGUEL ANGEL HERNANDEZ JULIO CESAR IZQUIERDO IZQUIERDO PEREZ ADDRESS REDACTED JUNEAU MARINE REFRIGERATION AND AIR CONDITIONING INC. TRACY LEBLANC PO BOX 1620 HOUMA LA 70361-1620

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 35 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 38 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country JUNIOR, AELSON LUIZ DE OLIVEIRA ADDRESS REDACTED JUNIOR, JOSE CARLOS GOES ADDRESS REDACTED JUNIOR, OSVALDO COSTA DE LIMA ADDRESS REDACTED JUNTA COMERCIAL DO ESTADO RUA LAURO MULLER 116 SAL 503 BOTAFOGO CEP RIO DE JANEIRO 22290-906 BRAZIL K AND J SUPPLIES LLC SUMMER LEBLANC - SUA RECIPIENT 3314 W ADMIRAL DOYLE DR NEW IBERIA LA 70560 ESTABO DE K AND K SERVICIOS MARITIMOS ALEJANDRO KER PRIVADA DE GALEANA NO 1 COLONIA SANTA MEXICO 55540 MEXICO K AND L GATES LLP PETER UKALI PO BOX 844255 BOSTON MA 02284-4255 K&L GATES LLP JASON SEKERAK 210 SIXTH AVENUE PITTSBURGH PA 15222 ALCALDIA CUAUHTEMO KA DE MEXICO S DE RL DE CV MAGDALENA ORTEGA PASEO DE LA REFORMA 505 PISO 42 SUITE E C MEXICO CITY 6500 MEXICO KABARITI, BLAKE ANDREW ADDRESS REDACTED KAHLA, LANE EVERETT ADDRESS REDACTED KANE, BRIAN SPENCER ADDRESS REDACTED KARGUS, RYANN LORA ADDRESS REDACTED KARL SENNER INC. JAN NOEL - SUA RECIPIENT 25 WEST THIRD ST KENNER LA 70062 KARL, ERICK F ADDRESS REDACTED KATHERINE CHEN ADDRESS REDACTED KAUFMAN AND ASSOCIATES DOLORES SCHEXNEIDER 109 E VERMILION STREET SUITE 200 LAFAYETTE LA 70501 KAUFMAN DOLOWICH & VOLUCK LLP ELLEN O'CONNELL 135 CROSSWAYS PARK DR STE 201 WOODBURY NY 11590 KAZMARK, DANIEL THEOFIL ADDRESS REDACTED KEAN MILLER LLP BRENDA LASSEIGNE PO BOX 3513 / II CITY PLAZA 400 CONVENTION ST., SUITE 700 BATON ROUGE LA 70821-3513 KEATING, HALEY MORGAN ADDRESS REDACTED KEILLOR, RUSSELL GRAHAM ADDRESS REDACTED KEITH'S TOWING SERVICE INC KARLA PARKS PO BOX 8573 MANDEVILLE LA 70470 KELLEY, KENNETH R ADDRESS REDACTED KELLEY, MATTHEW THOMAS ADDRESS REDACTED KELLY DOZAL, JUAN RAMON ADDRESS REDACTED KELLY, AARON LEE ADDRESS REDACTED KELLY, DONALD LEWIS ADDRESS REDACTED KELLY, MICHAEL PATRICK ADDRESS REDACTED KEMA, GEORGE CHIMA ADDRESS REDACTED KEMEL USA INC JUNKO HAWKINS 141 ROOSEVELT PL PALISADES PARK NJ 07650-1152 KENDRICK, TYLER JORDAN ADDRESS REDACTED KENNEDY MARINE INCORPORATED TIM KENNEDY-SUA RECIPIENT 10220 THREE RIVERS ROAD GULFPORT MS 39503 KENNEDY, KYLE S ADDRESS REDACTED KENNEMER, BRYCE PEYTON ADDRESS REDACTED KENNETH L. MAUN TAX COLLECTOR PO BOX 8046 MCKINNEY TX 75070-8046 KENT, JERRY LEE ADDRESS REDACTED KENTWOOD SPRINGS CHRISTINA HAMMOND-SUA RECIPIEN PO BOX 660579 DALLAS TX 75266-0579 KERLIN, THOMAS MARK ADDRESS REDACTED KERR, JONATHAN E ADDRESS REDACTED KESINGER, CLAYTON LEE ADDRESS REDACTED KESTER, KYLE THOMAS ADDRESS REDACTED KETTELL, NATHANIEL ADDRESS REDACTED KEVIN O MEYERS KEVIN O MEYERS, BOARD MEMBER ADDRESS REDACTED KEY ELECTRONIC SOLUTIONS INC. ANDREE ROBICHAUX 4931 BLOOMFIELD ST. NEW ORLEANS LA 70121 KEYBANK NA TRUSTEE FBO BUGBEE+CONKLE ATTN: LESTER DRYJA / SHELLY MC 04-01-49- PROFIT SHARING PLAN C/O KEYBANK NA KAPOSTASY 4900 TIEDEMAN RD 0327 BROOKLYN OH 44144 KIDDER INCORPORATED EDMOND RACHEL PO BOX 135 BERWICK LA 70342 KIGER, JOSEPH D ADDRESS REDACTED KILPATRICK, JORDAN B ADDRESS REDACTED KINCHEN, LONNIE J ADDRESS REDACTED KING & JURGENS LLC KRISTAN B KREMER 201 ST CHARLES AVE 45TH FLOOR NEW ORLEANS LA 70170 KING COMPANY LP WAYNE SERIO 639 N DUPRE STREET NW ORLEANS LA 70119 KING, HARLIS D ADDRESS REDACTED KINGWOOD PHYSICAL THERAPY LATANJA THOMPSON 21301 KUYKENDAHL SUITE B SPRING TX 77379 KIRBY, MARK W ADDRESS REDACTED KIRKLAND AND ELLIS LLP HELEN HO 300 N LASALLE STREET CHICAGO IL 60654 KIRTLEY, ADAM WAYNE ADDRESS REDACTED KIST, DANIEL C. ADDRESS REDACTED KITCHEN, BOYD T ADDRESS REDACTED KITZMILLER, BRETT ALAN ADDRESS REDACTED KIZER, JOHNNY P ADDRESS REDACTED KLARIC, MATE ADDRESS REDACTED KLING, PHILLIP HADDON ADDRESS REDACTED KLOPFER, ERICH CURTIS ADDRESS REDACTED KLOSTERMAN, JASON THOMAS ADDRESS REDACTED KLUMB, KYLOR K ADDRESS REDACTED

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 36 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 39 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country GOLDEN K-MAR SUPPLY BRANDI GUIDRY PO BOX 728 MEADOW LA 70357 KNAPPE, CHRISTIAN ROBERT ADDRESS REDACTED KNEIER, STEPHEN M. ADDRESS REDACTED KNIGHT, RUEL J ADDRESS REDACTED KNILL, ALEXANDER JORGE ADDRESS REDACTED KNOLL MARINE SERVICES LLC MATTHEW KNOLL 8948 SE PINE CONE LN HOBE SOUND FL 33455-4444 KNOWBE4 INC KIMBERLY BINGHEIM PO BOX 392286 PITTSBURGH PA 15251 KNUCKLES, JAMIERE E ADDRESS REDACTED KOCH & SCHMIDT LLC 650 POYDRAS ST. STE 2415 NEW ORLEANS LA 70130 LEIGHTON UNITED KOCKUM SONICS UK LTD DES KING UNIT 7 LEIGHTON INDUSTRIAL PK BILLINGTON ROAD BUZZARD LU7 4AJ KINGDOM KONGSBERG MARITIME AS-NORWAY TOR ERIK SORENSEN PO BOX 483 KONGSBERG NO 3601 NORWAY KONGSBERG MARITIME DO BRASIL CRISTIANE DELAMARE AV RIO BRANCO 173 16 ANDAR CENTRO RIO DE JANEIRO RJ 20040 007 BRAZIL KONGSBERG MARITIME INC TOYA PINKSTON - SUA RECIPIENT 10777 WESTHEIMER ROAD SUITE 1200 HOUSTON TX 77042 KONGSBERG MARITIME INC (RR) TOYA.PINKSTON - SUA RECIPIENT 10777 WESTHEIMER RD STE 1200 HOUSTON TX 77042 KONGSBERG MARITIME MEXICO VICTOR HUGO PROY TRUJILLO AV MARIGALANTE NO 311 INT 31 BOCA DEL RIO VZ 94298 MEXICO KONICHENKO, VICTOR ADDRESS REDACTED KONZEN, JOSEPH LEO ADDRESS REDACTED KOROSTKIN, ANDREI ANATOLIEVICH ADDRESS REDACTED KOSINSKI, CHAD ADDRESS REDACTED KOTLARZ ENT AND FACIAL PLASTIC JONTE 6100 NORTH DAVIS HWY PENSACOLA FL 32504 KOZMINSKI, ZENON ADDRESS REDACTED KPI BRIDGE OIL INC TIM COOK 21 E FRONT ST SUITE 300 RED BANK NJ 07701 KPMG RISK ADVISORY SERVICES RAFAEL WEKSLER AV ALMIRANTE BARRASCO 52 4TH RIO DE JANEIRO RJ 20031 0000 BRAZIL KRAFT POWER CORPORATION ROY DURHAM 1000B NORTHBROOK PARKWAY SUWANEE GA 30024 KRAFT, TAYLOR MICHAEL ADDRESS REDACTED KRELLER BUSINESS INFORMATION KIMBERLY CLIFT 817 MAIN STREET SUITE 700 CINCINNATI OH 45202 KREWSKY, WILLIAM S ADDRESS REDACTED BAINBRIDGE KRILL SYSTEMS INC CASEY COX 175 PARFITT WAY SW SUITE N280 ISLAND WA 98110 KROMEL COMERCIO E MANUTENCAO JOSE ROBERTO S. ABREU RUA NINA RIBEIRO 651 PAVUNA RIO DE JANEIRO RJ 21520-290 BRAZIL KROPFF, GAGE HAROLD ADDRESS REDACTED KRUSE, ROBERT DOUGLAS ADDRESS REDACTED KRW ATLANTIS TRANSPORTES CHRISTINE SHEPHERD FIGUEIREDO, 320, BLOCO 01 UNIDADE 02, RIO DE JANEIRO RJ 22793-170 BRAZIL KSI SAFETY COMERICO ERNANI KLEINUBING RUA ANDRE ROCHA 750 LOJA RIO DE JANEIRO RJ 22730-522 BRAZIL KUCHAR, ROBERT JOSEPH ADDRESS REDACTED KUIST, JERRY D ADDRESS REDACTED KVH INDUSTRIES INC DOROTHY WHITTIER 50 ENTERPRISE CENTER MIDDLETOWN RI 02842 TRINIDAD & KVR ENERGY (TRINIDAD) VIKASH SAMAROO ROAD ARANGUEZ TOBAGO KWIK CLINIC OCCUPATIONAL HEALT TINA GERARD 806 S TYLER ST COVINGTON LA 70433-3350 L C INDUSTRIES TARA SEAWARD PO BOX 13629 DURHAM NC 27709 L H PRINTING CO. INC ELLEN ARCENEAUX PO BOX 590 MORGAN CITY LA 70381 L-3 MARINE & OFFSHORE BRASIL RAFAEL BARRETO AV JOAO CABRAL DE MELLO NETO 400 SL 601 BARRA TIJUACA RIO DE JANEIRO RJ 22775 057 BRAZIL LA 1 COALITION, INC. HENRI BOULET PO BOX 2048-NSU THIBODAUX LA 70310 LA COMMISSIONER OF SECURITIES 8660 UNITED PLAZA BLVD. 2ND FLOOR BATON ROUGE LA 70809 LA DEPARTMENT OF REVENUE PO BOX 66362 BATON ROUGE LA 70896-6362 LA HEALTH SOLUTIONS LLC JENNIFER 56634 BOSWORTH STREET SLIDELL LA 70458 LA STATE BAR ASSOCIATION LORETTA LARSEN, EXEC DIR FEE PROCESS LA BAR CENTER 601 ST. CHARLES AVE. NEW ORLEANS LA 70130-3404 LAAM OFFSHORE INDUSTRIA EDMILSON NOGUEIRA PEREIRA RODOVIA AMARAL PEIXOTO 4665 (KM 180) - LAGOMAR MACAE RJ 27966150 BRAZIL LABAT, PETER J ADDRESS REDACTED LABCORP OF AMERICA HOLDINGS HOLLY PO BOX 2270 BURLINGTON NC 27216-2270 VILLAHERMOSA LABORATORIO DIESEL CHAVEZ HERM JORGE CHAVEZ ECHEVERRIA AV PERIFERICO 541 COL DIECIOCHO DE MARZO TABAS 86140 MEXICO LABORATORY COLLECTIONS CRAIG HENDRIX OR JADE 16600 WEST MAIN STREET CUT OFF LA 70345 LABORATORY MANAGEMENT SERVICES PO BOX 731951 DALLAS TX 75373-1951 LABORATORY MEDICINE CONSULTANT KRISTEN PO BOX 701 NEW HAVEN CT 06503 LABORDE PRODUCTS INC. KIM SARAGUSA-SUA RECIPIENT PO BOX 429 COVINGTON LA 70434 LABROSSE, BETH A ADDRESS REDACTED LADY OF THE SEA MEDICAL CLINIC CLINIC BILLING PO BOX 20410 BELFAST ME 04915-4099 LAFAYETTE ELECTRIC LLC ALITA BOUDREAUX 1107 9TH STREET MORGAN CITY LA 70380 LAFAYETTE GENERAL MEDICAL CTR LUCILLE PO BOX 54012 NEW ORLEANS LA 70154-4012 LAFOURCHE AMBULANCE DIST 1 17078 WEST MAIN STREET CUT OFF LA 70345 LAFOURCHE PARISH GOVERNMENT KELLI TOUPS PO DRAWER 5548 THIBODEAUX LA 70302 LAFOURCHE PARISH SCHOOL BOARD PO BOX 997 THIBODAUX LA 70302-0997 LAFOURCHE PARISH SCHOOL BOARD SALES AND USE TAX DEPARTMENT PO BOX 54585 NEW ORLEANS LA 70154 LAFOURCHE PARISH SHERIFF’S OFFICE PO BOX 679538 DALLAS TX 75267-9538 LAFOURCHE PARISH SHERIFF'S OFC PO BOX 679538 DALLAS TX 75267-9538 LAFOURCHE PARISH WATER DIST #1 CHERYL MATHERNE PO BOX 399 ACCT 677002100, 675644100 LOCKPORT LA 70374

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 37 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 40 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country LAGAC, FELINO T ADDRESS REDACTED LAGNIAPPE ANESTHESIA LLC PO BOX 570 LAKE FOREST IL LAKE CHARLES MEMORIAL HOSPITAL RENE DEPT 2475 PO BOX 122475 DALLAS TX 75312-2475 LA-MAN CORPORATION PAIGE NICHOLS PO BOX 328 MAZEPPA MN 55956 LAMBERTSON, KAMIN LEE ADDRESS REDACTED LAMONTAGNE, EMMA L ADDRESS REDACTED LANDRENEAU, WILLIAM L ADDRESS REDACTED LANDRY, NORBERT RUSSEL ADDRESS REDACTED LANE, PHILLIP WILLIAMSON ADDRESS REDACTED LANGELIER, BENJAMIN Y ADDRESS REDACTED LANGFORD, MICHAEL EUGENE ADDRESS REDACTED LARA GONZALEZ, PABLO ADDRESS REDACTED LARREF COM. MAT. ELETRICO E CO JORGE CAPELLA AV DOM HELDER CAMARA 4831 202 CACHAMBI RIO DE JANEIRO RJ 20771 001 BRAZIL LARRY D. HORNBECK ADDRESS REDACTED LARRY D. HORNBECK HORNBECK RANCH ADDRESS REDACTED LARSEN, CHRISTOPHER C ADDRESS REDACTED LASER INK COMERCIO E SERVICOS HENRIQUE RODRIGUES RUA JOSE RIBEIRO DE CASTRO - 3 RIO DE JANEIRO MACAE RJ 27910-040 BRAZIL LATHAM & WATKINS, LLP PAUL TOSTA PO BOX 7247-8181 PHILADELPHIA PA 19170-8181 LATHEM, JOSEPH L ADDRESS REDACTED LAUDON, EVAN D ADDRESS REDACTED LAUDUN, JOHN KELLY ADDRESS REDACTED LAURA E. DADETTA ADDRESS REDACTED LAUREA, CARMELO D ADDRESS REDACTED LAURENT L. HUC C/O CANACCORD GENUITY WEALTH ADDRESS REDACTED LAVALLEE, JAMES ALLEN ADDRESS REDACTED LAW OFFICE OF CARL KINCAID AV RIO BRNACO N 25 1 OR 2 ANDAR RIO DE JANIERO RJ 20 090-003 BRAZIL LAWRENCE, JAMES MATHEW ADDRESS REDACTED LAWRENCE, LARRY M ADDRESS REDACTED LAWRENCE, STEPHON ADDRESS REDACTED LCS RECYCLING LLC AMANDA CASTRO 22164 MCH RD MANDEVILLE LA 70471 LE MONDE ADM LTDA ADRIANE RIBEIRO RUA LAURO MULLER 16 SAL 503 BOTAFOGO RJ 22290-906 BRAZIL LEAF CAPITAL FUNDING LLC MARK CAMPO BOX 1884 629 PUTNEY ROAD BRATTLEBORO VT 05302 LEAL ARENAS, LEONARDO ADDRESS REDACTED LEAL GONZALEZ, DARIEL ARNOLDO ADDRESS REDACTED LEAL JUAREZ, MIGUEL ANGEL ADDRESS REDACTED LEBEOUF BROS. TOWING, LLC MAIDA VERRET PO BOX 9036 HOUMA LA 70361 LEBLANC & ASSOCIATES LLC SHAWN MOORE 132 INTRACOASTAL DRIVE HOUMA LA 70363 LEBLANC AND THERIOT EQUIPMENT SHERRON POGUE PO BOX 612 METAIRIE LA 70004 LEBLANC, MICAH WAYNE ADDRESS REDACTED LEBLANC, NATALIE NICOLE ADDRESS REDACTED LEBLANC, SEAN MICHAEL ADDRESS REDACTED LEDET, GALA A ADDRESS REDACTED LEE ENGINEERING SUPPLY CO STEVE LEE PO BOX 23340 NEW ORLEANS LA 70183 LEE, DILLON R ADDRESS REDACTED LEE, THOMAS JOSEPH ADDRESS REDACTED LEESE, HANNAH MARGARET ADDRESS REDACTED LEMAITRE, JULES WILLIAM ADDRESS REDACTED LEMOINE, SAMANTHA L ADDRESS REDACTED LENERS, MICHAEL DORAN ADDRESS REDACTED LENNON, JOHN J ADDRESS REDACTED LEON PEREZ, DAVID RICARDO ADDRESS REDACTED LEON RECIO, ALEJANDRO ALBERTO ADDRESS REDACTED LEONARD GOLDMAN ATTN: LEONARD GOLDMAN / GARY GOLDMAN ADDRESS REDACTED LEONARD, HOLLIS EDWARD ADDRESS REDACTED LEONARD, JONATHAN LEE ADDRESS REDACTED LEONARD, SETH M ADDRESS REDACTED LEONEL GARCIA TERCERO LEONEL GARCIA TERCERO ADDRESS REDACTED CIUDAD LEPSA SA DE CV YARIN CASTANEDA MARTINEZ CALLE 25 TABLAJE CATASTRAL 4887 AMPLIACION INDUSTRIAL INDUSTRIAL UMAN YUCATAN 97390 MEXICO LERMA BECERRA, JESUS ANTONIO ADDRESS REDACTED LERMA CAMPOS, JORGE ADRIAN ADDRESS REDACTED LERMA DE LA ROSA, JESUS ANTONIO ADDRESS REDACTED LEROY'S CARPET & FLOORING, INC JENNY LACOSTE PO BOX 131 GALLIANO LA 70354 LESTELLE AND LESTELLE APLC 3421 N. CAUSEWAY BLVD SUITE 602 METAIRIE LA 70002-3726 LEVANDOWSKI, RICHARD EDWARD ADDRESS REDACTED LEWIS BRISBOIS BRISGAARD & SMI WALTER GALLANT 633 W. 5TH STREET SUITE 4000 LOS ANGELES CA 90071 LEWIS, AARON S ADDRESS REDACTED LEWIS, LEONARD S ADDRESS REDACTED LEWIS, ROBERT JAY ADDRESS REDACTED LEWIS, WILLIAM SPONSON ADDRESS REDACTED

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 38 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 41 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country LEXINGTON INSURANCE COMPANY 99 HIGH ST, FLOOR 24 BOSTON MA 02110-2378 LEXISNEXIS VANESSA LLOYD PO BOX 894166 LOS ANGELES CA 90189-4166 LEYVA CRESPO, VICTOR ALEXIS ADDRESS REDACTED LEYVA LEYVA, JOSE GIOVANNI ADDRESS REDACTED L'HOSTE, VEL L ADDRESS REDACTED LIBBY, MICHAEL SCOTT ADDRESS REDACTED LIBERTY MUTUAL FIRE INSURANCE CO 11524 KLUCKHOHN ST. PO BOX 58 STITZER WI 53825 LIBERTY MUTUAL INSURANCE COMPANY 175 BERKELEY STREET BOSTON MA 02116 LIBERTY TERMINALS LLC RON MILLER PO BOX 1498 GEORGETOWN SC 29442 LIBORIO GIL LIMBERG EN MANOS DEL LIC. JORGE FLORES OVANDO ADDRESS REDACTED LIDER TAXI AEREO SA JOSE DORNELAS NOGUEIRA RUA HILDEBRANDO ALVES BARBOS S/N - AEROPORTO DE MACAE MACAE RIO DE JANIERO RJ BRAZIL LIDIA NELLY SOLIS HERRERA MARTHA CAMPOS HERNANDEZ ADDRESS REDACTED LIFE FITNESS SUE RAKOCZY 2716 NETWORK PLACE CHICAGO IL 60673-1271 RIO DAS LIFE SAFETY COMERCIO MANUTENCA AVANIR ARAUJO RUA BARBOSA LIMA SOBRINHO N 95 QD63 LT107 ENSEADAS DAS GAVIOT OSTRAS RIO DE JANEIRO RJ 28897166 BRAZIL LIFE SAVING EQUIPMENT REP JACKIE SUMRALL- SUA RECIPIENT PO BOX 2725 MORGAN CITY LA 70381 LIFTING ASSISTENCIA TECNICA FLORIANO RUA DA CONCEICAO, 141 SALA 605, CENTRO NITEROI RJ 24.466-25 BRAZIL LIGHT SERVICOS DE ELETRICIDADE CONSUMER SERVICES AV MAL FLROIANO 168 RIO DE JANEIRO RJ 20080-002 BRAZIL LIMBERT GONZALEZ, LINO ADDRESS REDACTED LINA, JAMES LOUIS ADDRESS REDACTED LINALDI RANGEL, HUMBERTO ADDRESS REDACTED LINK, WILLIAM CODY ADDRESS REDACTED LINO MEJIA, MARCOS ALBERTO ADDRESS REDACTED

LION NAVAL ARCHITECTS SA DE CV KARLAGABRIELA HERNANDEZ ALONSO AV LLAVE NO 105 COLONIA CENTRO COATZACOALCOS VE 96400 MEXICO LIRETTE, JODY J ADDRESS REDACTED LIRETTE, TRAVIS JOSEPH ADDRESS REDACTED LISKOW AND LEWIS TESS CUSTODIO 701 POYDRAS STREET SUITE 5000 NEW ORLEANS LA 70139 LISTER, RONALD L ADDRESS REDACTED LITTLE, EVAN MICHAEL ADDRESS REDACTED LITTLETON, BRANDON L ADDRESS REDACTED LITTLETON, LARRY LEE ADDRESS REDACTED LIVERMORE, CODY LELAND ADDRESS REDACTED LIZARRAGA CAZARES, LEONARDO ADDRESS REDACTED LIZARRAGA CEVALLOS, JESUS ANTONIO ADDRESS REDACTED LIZARRAGA CHICUATE, JOSE ROBERTO ADDRESS REDACTED LIZARRAGA CORTES, VICTOR HUGO ADDRESS REDACTED LIZARRAGA ESTRADA, JOSE CARLOS ADDRESS REDACTED LIZARRAGA LIZARRAGA, EFRAIN ADDRESS REDACTED LIZARRAGA LOPEZ, EDGAR TADEO ADDRESS REDACTED LIZARRAGA PALOMARES, LUIS GUILLERMO ADDRESS REDACTED LIZARRAGA ROJAS, RAUL ADDRESS REDACTED LLOYD, KENDALL W ADDRESS REDACTED LLOYDS REGISTER DO BRASIL LTDA ADRIANA DA SILVA BLOISE RUA DA GLORIA, 344-11 RIO DE JANEIRO RJ 20241180 BRAZIL LLOYD'S REGISTER NORTH AMERICA GARETH N STUBBS PO BOX 301254 DALLAS TX 75303-1254 UNITED LLOYD'S SYNDICATE 0609 AUW C/O LLOYD'S OF LONDON 1 LIME STREET LONDON EC3M 7HA KINGDOM UNITED LLOYD'S SYNDICATE 1036 COF C/O LLOYD'S OF LONDON 1 LIME STREET LONDON EC3M 7HA KINGDOM UNITED LLOYD'S SYNDICATE 1084 CSL C/O LLOYD'S OF LONDON 1 LIME STREET LONDON EC3M 7HA KINGDOM UNITED LLOYD'S SYNDICATE 1301 SCC C/O LLOYD'S OF LONDON 1 LIME STREET LONDON EC3M 7HA KINGDOM UNITED LLOYD'S SYNDICATE 2001 AML C/O LLOYD'S OF LONDON 1 LIME STREET LONDON EC3M 7HA KINGDOM UNITED LLOYD'S SYNDICATE 2468 NEO C/O LLOYD'S OF LONDON 1 LIME STREET LONDON EC3M 7HA KINGDOM UNITED LLOYD'S SYNDICATE 2623/623 AFB C/O LLOYD'S OF LONDON 1 LIME STREET LONDON EC3M 7HA KINGDOM UNITED LLOYD'S SYNDICATE 2987 BRT C/O LLOYD'S OF LONDON 1 LIME STREET LONDON EC3M 7HA KINGDOM UNITED LLOYD'S SYNDICATE 4472 LIB C/O LLOYD'S OF LONDON 1 LIME STREET LONDON EC3M 7HA KINGDOM UNITED LLOYD'S SYNDICATE 5000 TRV C/O LLOYD'S OF LONDON 1 LIME STREET LONDON EC3M 7HA KINGDOM UNITED LLOYD'S SYNDICATE 5151 ENH C/O LLOYD'S OF LONDON 1 LIME STREET LONDON EC3M 7HA KINGDOM LOAEZA PERAZA, EDWIN MIGUEL ADDRESS REDACTED LOCK, JASON TRAVIS ADDRESS REDACTED LOCKREM, ROBERT E. ADDRESS REDACTED

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 39 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 42 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country LOCKTON BRASIL CONSULTORIA MARCIA SAMPAIO RUA ALEXANDRE DUMAS 2200 2 ANDAR CHA SAO PAULO SP 04717-910 BRAZIL LOCKTON COMPANIES LLC 444 W 47TH STEET, SUITE 900 KANSAS CITY MO 64112 LOCKTON COMPANIES LLC MICHELLE TIDWELL DEPT 3036 PO BOX 123036 DALLAS TX 75312-3036 LOCKTON MEXICO AGENTE DE SEGUROS Y DE FINANZAS SA DE CV JACQUELINE LARA AV SANTA FE NO 481-19 COLONIA CRUZ MANCA MEXICO CITY MX 5349 MEXICO LODRIGUE'S LONGSHORE CREWS ANNA LODRIGUE 1001 LUCIA ST. PATTERSON LA 70392 LOFTON STAFFING SERVICE SUA RECIPIENT PO BOX 54745 NEW ORLEANS LA 70154-4745 LOGIKA SERVICOS DE TRANSPORTES RICARDO TOSTES RUA MARFIM 35 MACAE RJ 27940-225 BRAZIL LOKERSON, DANIEL T ADDRESS REDACTED LOMBARD ODIER ASSET MANAGEMENT (SWITZERLAND) SA C/O BANQUE LOMBARD ODIER & CIE SA RUE DE LA CORRATERIE 11 1204 GENEVA SWITZERLAND LONDON OFFSHORE BRASIL LORNA KEMP AV RIO BRANCO 89/26 ANDAR RIO DE JANEIRO RJ 20040 BRAZIL LONDON OFFSHORE CONSULTANTS SUZRIN SINGH 1575 SAWDUST ROAD SUITE 200 THE WOODLANDS TX 77380 DELEGACION MAGDALENA CIUDAD DE LONDON OFFSHORE CONSULTANTS MX AZALIA SALINAS MELARA AV SAN JERONIMO NO 1749 COLONI CONTRERAS MEXICO 10000 MEXICO LONESTAR ORTHOPEDICS 4710 KATY FREEWAY HOUSTON TX 77007 LONG ISLAND COLLEGE HOSPITAL 7 AUDUBON ROAD WAKEFIELD PA 01880-1248 LONGNECKER PROPERTIES INC WADE LONGNECKER 2120 BAYOU ROAD THIBODAUX LA 70301 LOPES PINTO ADVOGADOS ASSOCIAD DEYVID VICTAL RUA MEXICO 31 RIO DE JANEIRO RJ 20031 904 BRAZIL LOPES, OSWALDO NATAN DA SILVA ADDRESS REDACTED LOPEZ DIAZ, CARLOS ARTURO ADDRESS REDACTED LOPEZ HERNANDEZ, ISRAEL ADDRESS REDACTED LOPEZ MARTINEZ, RAQUEL ADDRESS REDACTED LOPEZ MENDEZ, ALEXIA PAULINA ADDRESS REDACTED LOPEZ NORIEGA, RODOLFO ADDRESS REDACTED LOPEZ RUIZ, RUBEN ADDRESS REDACTED LOPEZ, DEANNA K. ADDRESS REDACTED LOPEZ, EDWARD F ADDRESS REDACTED LORE, PAUL STUART ADDRESS REDACTED LORIA PEREZ, PEDRO ADDRESS REDACTED LOS PRIMOS COMERCIALIZADORA HUMBERTO MURILLO LOREDO AVE MONTERREY #609 COL ENRIQUE CARDENAS GONZALEZ TAMPICO TAMAULIPAS CP 89309 MEXICO LOUISIANA DEPARTMENT OF ENVIRONMENTAL QUALITY 602 NORTH FIFTH ST BATON ROUGE LA 70802 LOUISIANA DEPARTMENT OF REVENUE PO BOX 3138 BATON ROUGE LA 70821-3138 LOUISIANA DEPARTMENT OF REVENUE PO BOX 91011 BATON ROUGE LA 70821-9011 LOUISIANA MACHINERY LLC ROXANNE VESTAL PO BOX 536 RESERVE LA 70084 LOUISIANA MINORITY SUPPLIER ERIK WATERS ATTN: PHALA K MIRE 400 POYDRAS ST #1960 NEW ORLEANS LA 70130 LOUISIANA OFFICE OF THE ATTORNEY GENERAL 1885 N. THIRD ST BATON ROUGE LA 70802 LOUISIANA PROSPERITY FUND NICOLE DESORMEAUX PO BOX 746 ABBEVILLE LA 70511 LOUISIANA SECRETARY OF STATE COMMERCIAL DIVISION PO BOX 94125 BATON ROUGE LA 70804-9125 LOUISIANA TONER AND INK KIMBERLY WISNER PO BOX 324 MANDEVILLE LA 70470 LOUREIRO, LOURIVAL MORAIS ADDRESS REDACTED LOURINHO, WILLIAMS RODRIGUES ADDRESS REDACTED LOVE, JAMES A ADDRESS REDACTED LOVE, JESSE MICHAEL ADDRESS REDACTED LOVETT, ALEXIA VONDRIA ADDRESS REDACTED LOVETT, ROBERT S ADDRESS REDACTED LOZANO LOPEZ, LUIS ADDRESS REDACTED LPL FINANCIAL LLC MICHAEL VAUGHAN PO BOX 502533 SAN DEGO CA 92150-2533 LQT INDUSTRIES LLC ALISON MIRE - SUA RECIP 7939 US HIGHWAY 167 N ABBEVILLE LA 70510 LRN CORPORATION MICHAEL CALDERON 745 5TH AVENUE SUITE 800 NEW YORK NY 10151 LSE CRANE AND TRANSPORTATION APRIL THOMPSON PO BOX 266 SCOTT LA 70583 LSU HEALTHCARE NETWORK ALICE PO BOX 919100 DALLAS TX 75391 LAGUNA DEL CARMEN, LUB MAR OIL DE MEXICO CARLOS ABRAHAM GARCIA AV 4 ORIENTE MZA D LOTE 3 PUERTO INDUSTRIAL PESQUERO AZUL CAMPECHE 24129 MEXICO LUBRANO, PAUL A ADDRESS REDACTED CD DEL CARMEN LUBRICANTES DE CALIDAD GOLFO MANUEL JIMENEZ DEL GOLFO Y DEL CARIBE CALLE 24 S/N COL CENTRO CAMP 24129 MEXICO R/A ANACLETO VILLAHERMOSA LUBRICANTES DE CALIDAD TAB VICTOR GONZALES CALLE 3 S/N PARQUE INDUSTRIAL DEIT CANABAL TAB 86280 MEXICO LUCAS, CHRISTOPHER MICHAEL ADDRESS REDACTED LUCAS, NOEL D ADDRESS REDACTED LUCAS, TENARA LATRICE ADDRESS REDACTED LUCIANI, REBECCA ANN ADDRESS REDACTED LUCY, STEPHEN PATRICK ADDRESS REDACTED LUDVIGSEN, LOUIS PETER ADDRESS REDACTED LUGENBUHL WHEATON PECK RANKIN LIZ LEARD 601 POYDRAS STREET NEW ORLEANS LA 70130 LUIS R. CRUZ JR. C/O NATIONAL FINANCIAL SERVICES LLC ADDRESS REDACTED LUIZ MATTOS E ENGENHEIROS-RBNA LUISA MARQUES AV RIO BRANCO 124 GR 1701 PART RIO DE JANEIRO RJ 20040-001 BRAZIL

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 40 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 43 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country LUIZ SERGIO CHAME LUCIANA CHAME ADDRESS REDACTED LUKE, SEAN A ADDRESS REDACTED LURELEE SCHOENBERG LURELEE SCHOENBERG ADDRESS REDACTED LYDIA MULERO DESIGNS LYDIA GALLIGAN MULERO 3659 CONSTANCE STREET NEW ORLEANS LA 70115 LYLE, ANDRE F ADDRESS REDACTED LYNCH, SAMUEL R ADDRESS REDACTED LYNDA DECKARD RAMOS LYNDA DECARD RAMOS ADDRESS REDACTED M & L INDUSTRIES, LLC CHRISTOPHER WATSON 1210 ST. CHARLES STREET HOUMA LA 70360 M & R RESOURCES LLC STEPHANIE LAIRD 42354 DELUXE PLAZA SUITE 15 HAMMOND LA 70403 M AND A SAFETY SERVICES LLC CINDY FRIOUX PO BOX 4177 HOUMA LA 70361-4177 MADERO M AND P SURVEYORS C P CLAUDIA CASTRO JAUMAVE 123 COL DEL MAESTRO TAMAULIPAS 89550 MEXICO M AND R GLOBAL TRADING INC MOHAMMED ISLAM 36 MADERA COURT KENNER LA 70065 M G AUTOMATION AND CONTROLS LANA GANCI PO BOX 23744 HARAHAN LA 70183-0744 M&D DISTRIBUTORS TONI SEXTON M&D DISTRIBUTORS 7902 FM 1960 BYPASS WEST HUMBLE TX 77338 MAC LAREN OIL ESTALEIROS LTDA AIRALDO FELIX MIGUEL LEMOS LORTE 616 PONTA D'AREIA NITEROI RJ 24040-260 BRAZIL MACAE NAUTICA COMERCIO E SERVI MARIO PACHECO RUA BENTO MARTINS DA COSTA 198 MACAE RJ BRAZIL MACARIO OSORIO, TELESFORO ADDRESS REDACTED MACARTNEY KORI ACOMPA-SANCHEZ 2901 W SAM HOUSTON PKWY N SUITE D-260 HOUSTON TX MACEDA RODRIGUEZ, EFREN ADDRESS REDACTED MACGREGOR NORWAY AS OYSTEIN BONDEVIK ANDOYVEIEN 23 KRISTIANSAND N-4623 NORWAY MACGREGOR USA INC PAT DRAKE PO BOX 822318 PHILADELPHIA PA 19182 MACIEL, MARCELO DE FREITAS ADDRESS REDACTED MACKAY MARINE RW BLACKFORD PO BOX 60925 CHARLOTTE NC 28260 713 A 724 BARRA DA MACKAY MARINE DO BRASIL THAYS REGIS AVN EMBAIXADOR ABELARDO BUENO 3500 SALAL TIJUCA RIO DE JANEIRO RJ 22775-040 BRAZIL CIUDAD DEL MADERAS RICHARD SA DE CV FLOR DE LIZ MARTINEZ ULLOA CALLE JAVIN MZ 1 LOTE 8 COL 23 DE JULIA CD CARMEN CM MEXICO CARRETERA CARDENAS MADISA LUIS ALFREDO GALLEGOS HERNANDE VILLAHERMOS KM 163 200 RANCHERIA ANACLETO CANABAL VILLAHERMOSA TB 86280 MEXICO MADISON HEALTHPLEX AND SPORTS TAFARIA BRYANT PO BOX 2959 JACKSON MS 39207 MADISON PHYSICIAN SURGERY CENT TAFARIA BRYANT 4510 LAKELAND DR FLOWOOD MS 39232-9583 MADRID MORALES, OSCAR ADDRESS REDACTED MADRIGAL GARCIA, CARLOS ARMANDO ADDRESS REDACTED MAE PHYSICIAN SURGERY CENTER 1190 N STATE STREET SUITE 102 JACKSON MS 93202 MAERSK TRAINING BRASIL CLARA BOA NOVA AVENIDA DAS AMERICAS 3301 RIO DE JANEIRO RJ BRAZIL MAGEE, DONALD R ADDRESS REDACTED MAGEE, SAMUAL S. ADDRESS REDACTED MAGERAMOV, SAMED ADDRESS REDACTED MAGHRABI, YOUSRI ADDRESS REDACTED MAGIC LAMP LAMPADAS E MATERIAI NINA VERONICA RUA TIRADENTES 274 MACAE RJ 27915 060 BRAZIL MAGNANI, WENDY H ADDRESS REDACTED MAGNUM MUD EQUIPMENT CO INC. DONNA AWIE PO BOX 4258 HOUMA LA 70361 MAHAN, ANGEL LYNN ADDRESS REDACTED MAHFOUZ, SARAH MAE ADDRESS REDACTED MAHL'S MEDICAL REVIEW & BILLIN CAROL 4634 HIDALGO AVE. SAN DIEGO CA 92117 MAHONEY, PATRICK MCCULLOUGH ADDRESS REDACTED MAIA, BRUNO CARDOZO ADDRESS REDACTED MAIAROTO, ANTHONY J. ADDRESS REDACTED MAICO, DANILO C ADDRESS REDACTED MAIER, JEFFREY WALLACE ADDRESS REDACTED MAILFINANCE INC CRAIG MIRAMBELL DEPT 3682 PO BOX 123682 DALLAS TX 75312-3682 MAITRE, JENNA VICTORIA ADDRESS REDACTED MAJAN DE MEXICO SA DE CV LUIS CARPIZO ACUNA AV PEDRO SAENZ DE BARANDA LOTE 1 ZONA TURISTICA CAMPECHE 24030 MEXICO MAKO CATERING LLC WENDY DUBOSE PO BOX 81487 LAFAYETTE LA 70598 MAKO UNLIMITED LLC WENDY DUBOSE PO BOX 81487 LAFAYETTE LA 70598 TRINIDAD & MALABAR FARMS (TRINIDAD) JESSICA BOVELL MALABAR FARMS TOBAGO MALDONADO FUENTES, ARMANDO ADDRESS REDACTED MALO, TOBIE D ADDRESS REDACTED MALY, EDUARD ADDRESS REDACTED MAN ENERGY SOLUTIONS KARIN KOCK CHRISTENSEN H. CHRISTOFFERSENSVEJ 6 HOLEBY 4960 DENMARK MAN ENERGY SOLUTIONS USA INC [email protected] 1758 TWINWOOD PKWY BROOKSHIRE TX 77423-4700 MANAUF, MOHAMMED ABDOOL HASEEB ADDRESS REDACTED MANGFLEX ARTEFATOS DE BORRACHA RAIMUNDO GOMES DE OLIVEIRA RUA BARAO DO AMAZONAS 42 LJ 02 CENTRO NITEROI RJ 24030 110 BRAZIL MANGOLD, ROBERT JOHN ADDRESS REDACTED MANOBRASSO SERVICOS MARITIMOS ELISANGELA MENDES DE SOUZA RUA VISCONDE DE SEPETIBA N 935, SALA 606 CENTRO NITEROI RJ 24020206 BRAZIL MANOJ V. ATHAVALE ADDRESS REDACTED MANUEL, JARED M ADDRESS REDACTED

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 41 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 44 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country MANZELLA, ANTHONY J ADDRESS REDACTED MAPAMAR COMERCIO E SERVICOS ALESSANDRA RUA RICARDO MACHADO 156 SAO CRISTOVAO RIO DE JANEIRO RJ 20921.27 BRAZIL MAPP CONSTRUCTION LLC BEAU B. WOLFE 344 THIRD STREET BATON ROUGE LA 70801 MARABELLE CONFECCOES LTDA MARCIA RODRIGUES RUA TORIBA, 585, COLEGIO RIO DE JANEIRO RJ 21.545-260 BRAZIL MARCELO MARINHO RIBIERO ME MARCELO MARINHO RUA BENEDITO LACERDA 13 MACAE RJ 27913-000 BRAZIL MARE ISLAND DRY DOCK LLC RICK BRANDT 1180 NIMITZ AVE VALLEJO CA 94592 MARGARITA EUGENIA GRANIEL MARGARITA EUGENIA ADDRESS REDACTED MARGULIES, ISAIAH MALACHI ADDRESS REDACTED MARIA JOSE DEL RIO ESCALANTE MARIA JOSE DEL RIO ESCALANTE ADDRESS REDACTED MARINE ALUMINUM A.S. SYLVIA WAGA PO BOX 134 4299 AVALDSNES NORWAY MARINE AND INDUSTRIAL SOLUTION DAN MACRI PO BOX 881599 PORT ST LUCIE FL 34988-1599 MARINE AND INDUSTRIAL SUPPLY KELLY RYDER PO BOX 2186 MOBILE AL 36652 MARINE CHEMISTS OF LA, LLC CHRISTOPHER SCOTT PO BOX 9064 BRIDGE CITY LA 70094 TRINIDAD & MARINE CONSULTANTS LTD KHARI LOOK LOY 43A CHARLES STREET PORT OF SPAIN TOBAGO MARINE DOCUMENTATION, INC. DIANNA MORGAN 1861 EDWIN MILLER BLVD. SUITE B MARTINSBURG WV 26404 MARINE EQUIPMENT INC JERI MAITO PO BOX 73049 HOUSTON TX 77273-3049 MARINE FAB AND REPAIR INC. C. FRUGA 211 VENTURE BLVD HOUMA LA 70360 MARINE INTERIOR SYSTEMS DIANNE RITTINER PO BOX 10490 JEFFERSON LA 70181 MARINE PRESERVATION ASSOC B DREWRY 20645 N PIMA ROAD STE100 SCOTTSDALE AZ 85255 MARINE SPILL RESPONSE CORP JUDITH ROOS 220 SPRING STREET, STE 500 HERNDON VA 20170 MARINE SPLICING & SUPPLY CO CHARLIE RARESHIDE- SUA RECIPT PO BOX 3441 NEW ORLEANS LA 70177-3441 MARINE SURVIVAL TRAINING CNTR PEARLY LEMAIRE-SUA RECEIPIENT PO BOX 42890 LAFAYETTE LA 70504 MARINE SYSTEMS INC. LEE WILSON PO BOX 301284 DALLAS TX 75303 1284 MARINE TECHNOLOGIES LLC JANSEL PEREIRA 1111 DECKER DRIVE MANDEVILLE LA 70471 MARINE TURBINE TECHNOLOGIES ANTOINETTE MCINTYRE 298 LOUISIANA RD FRANKLIN LA 70538 MARINE UNDERWRITERS OF AMERICA 2040 NORTH LOOP 336 WEST SUITE 225 CONROE TX 77304 PANUCO MARINOIL SERVICIOS MARITIMOS MERCEDES AGUILAR CARRETERA TAMPICO VALLES KM 4.5 COL MORAILILLO VERACRUZ 92018 MEXICO MARISCO LTD LEA REYES 91-607 MALAKOLE ST KAPOLEI HI 96707 CIUDAD DEL MARITIMA INTERNACIONAL S.A. DE TERESITA GARNIEL CARVALLO AV. MALECON DE LA CALETA NO. 97 CARMEN CAMPECHE 24110 MEXICO MARITIME ADMINISTRATION USDOT KEVIN TOKARSKI 1200 NEW JERSEY AVE SE WEST WING 2ND FLR WASHINGTON DC DC 20590 MARITIME BROKERS AND CONSULT CODY SANDER 1650 LAKE COOK ROAD DEERFIELD IL 60015 692 TECHNOLOGY AND GRADUATE MARITIME LINTHICUM MARITIME INST TECH & GRAD STUD JO ANN LINTHICU - SUA RECIP MARITIME INSTITUTE OF STUDIE BLVD HEIGHTS MD 21090 MARK J. CHOURY ADDRESS REDACTED MARK SHIFFER SURVEYORS INC LYNNE CLARK PO BOX 1669 CHALMETTE LA 70044-1669 MARKLE, ALEXANDER G ADDRESS REDACTED MARKLIN, ERIK JON ADDRESS REDACTED MARKS, JAMES RUSSELL ADDRESS REDACTED MARLINK AS - NORWAY POSTBOKS 433 LYSAKER TORG 45 LYSAKER N-1327 NORWAY MARLINK INC. RHONDA SULLIVAN - SUA RECIP DEPT 3679 PO BOX 123679 DALLAS TX 75312-3679 MARLINK SA - BELGIUM RUE DE STALLE STRAAT 140 BRUSSELS B1180 BELGIUM MARLON ENGELS MARIN CUBILLAN MARLON ENGELS MARIN CUBILLAN ADDRESS REDACTED MAROHL, AMBER MARIE ADDRESS REDACTED MARQUEZ HERNANDEZ, JULIO ISAAC ADDRESS REDACTED MARQUEZ PEREZ, JULIO CESAR ADDRESS REDACTED MARQUIS MANAGEMENT GROUP LLC ROGER BEAUDEAN PO BOX 2672 MORGAN CITY LA 70381 MARSH USA INC PO BOX 973760 DALLAS TX 75397-3760 MARSHALL WOLF 16 HARBOUR STREET UNIT 5305 TORONTO ON M5J2Z6 CANADA MARSHALL, GREGORY A ADDRESS REDACTED MARSHALL, TORY JOHN ADDRESS REDACTED MARTIN ENERGY SERVICES LLC ATTN: JOHN BEN BLACKBURN 4200 STONE ROAD KILGORE TX 75662 MARTIN ENERGY SERVICES LLC LANITA JONES PO BOX 95363 GRAPEVINE TX 76099-9733 MARTIN ENERGY SERVICES, LLC ROBERT D. BONDURANT & CHRIS BOOTH 4200 STONE ROAD KILGORE TX 75662 MARTIN ENERGY SERVICES, LLC ROBERT D. BONDURANT & CHRIS BOOTH P.O. BOX 191 KILGORE TX 75663 MARTIN HOLDINGS, LLC CONNIE PLAISANCE PO BOX 310 GALLIANO LA 70354 MARTIN OPERATING PARTNERSHIP L.P. ROBERT D. BONDURANT & CHRIS BOOTH 4200 STONE ROAD KILGORE TX 75662 MARTIN OPERATING PARTNERSHIP L.P. ROBERT D. BONDURANT & CHRIS BOOTH P.O. BOX 191 KILGORE TX 75663 MARTIN OPERATING PARTNERSHIP LP ATTN: JOHN BEN BLACKBURN 4200 STONE ROAD KILGORE TX 75662 MARTIN, BENJI ALAN ADDRESS REDACTED MARTIN, DAVID WILLIAM ADDRESS REDACTED MARTIN, JACOB B ADDRESS REDACTED MARTIN, MIKAYLA KIRSTEN ADDRESS REDACTED MARTIN, WILLIAM KHALIFA ADDRESS REDACTED MARTINEZ BLANCO, OSMAR ADDRESS REDACTED MARTINEZ BOLAINA, MIGUEL ANGEL ADDRESS REDACTED MARTINEZ CACHO, JORGE I ADDRESS REDACTED

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 42 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 45 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country MARTINEZ CAMPOS, VICENTE ALEJANDRO ADDRESS REDACTED MARTINEZ DE LA TORRE, LORENZO ADDRESS REDACTED MARTINEZ GALMICH, JAVIER ADDRESS REDACTED MARTINEZ OSUNA, IRVING FABIAN ADDRESS REDACTED MARTINEZ PARRA, JONATHAN JASIRT ADDRESS REDACTED MARTINEZ RAMOS, GUILLERMO ADDRESS REDACTED MARTINEZ RODRIGUEZ, EUGENIO MARTIN ADDRESS REDACTED MARTINEZ, FELIPE ANTONIO ADDRESS REDACTED MARTINEZ, MARVIN ADDRESS REDACTED MARTINS, FELIPE DA FONSECA ADDRESS REDACTED MARVIN P JONES MD PC CAROL 1375 EAST KING AVE KINGSLAND GA 31548 MASON, STEVEN E ADDRESS REDACTED TRINIDAD & MASSY CAT (TRINIDAD) CALESTON MOLLINEAU URIAH BUTLER HIGHWAY CHAGUANAS TOBAGO MATA, CYNTHIA GOMES ADDRESS REDACTED MATEUS, MARCLEY COELHO ADDRESS REDACTED MATHERNE, THOMAS EDWARD ADDRESS REDACTED MATHERNE, TYLER LEE ADDRESS REDACTED MATRIX HEALTHCARE SERVICES PO BOX 102588 ATLANTA GA 30368 MATTHEWS, BERRY DOUGLAS KIM ADDRESS REDACTED MATTHEWS, JUSTIN RAYMOND ADDRESS REDACTED MATTHYS, ZACHARY D ADDRESS REDACTED MATUZ VILLAREAL, JOSE LUIS ADDRESS REDACTED MAUL, STEPHEN MICHAEL ADDRESS REDACTED MAURA JOHNSON, CPA MAURA JOHNSON ADDRESS REDACTED MAUREEN CLARY FOR MAYOR CAMPAI MAUREEN CLARY 728 E INDEPENDENCE STREET COVINGTON LA 70433 MAX-AIR TAMMY SOTH - SUA RECIPIENT 2807 PEDDLER LANE KERRVILLE TX 78028 MAXIM WATERMAKERS LLC GAIL LINDSEY PO BOX 65138 SHREVEPORT LA 71136 MAXWELL, CLARKE A. ADDRESS REDACTED MAY, JASON J ADDRESS REDACTED MAYEAUX, STEWART J ADDRESS REDACTED MAYEN LIZARRAGA, JUAN ADDRESS REDACTED MAYER BROWN LLP R. GONZALEZ 2027 COLLECTION CENTER DR CHICAGO IL 60693-0020 MAYER, ANDREW F ADDRESS REDACTED MCALPIN, CHARLES PATRICK ADDRESS REDACTED MCBRIDE, ROBBY KINGSLY ADDRESS REDACTED MCCAIN, CHASE DANIEL ADDRESS REDACTED MCCALL, JIMMY W ADDRESS REDACTED MCCANN, WILLIAM JOSEPH ADDRESS REDACTED MCCARROLL, WILLIAM EARL ADDRESS REDACTED MCCARTHY, CONNOR JAMES ADDRESS REDACTED MCCARTHY, KAYLYN CAMILLE ADDRESS REDACTED MCCARTHY, TIMOTHY P ADDRESS REDACTED MCCARTNEY, KEVIN M ADDRESS REDACTED MCCLEAN, ROBERT ADDRESS REDACTED MCCLURE, AUSTIN PATRICK ADDRESS REDACTED MCCLURE, KAYLA KATHERINE ADDRESS REDACTED MCCLURE, SHANIA MARIE ADDRESS REDACTED MCCLURKIN, CHRISTOPHER ADDRESS REDACTED MCCOY, RYAN TIMOTHY ADDRESS REDACTED MCCULLOUGH, MYLES BRETT ADDRESS REDACTED MCFADDEN, BILLY MONROE ADDRESS REDACTED MCFIELD, THOMAS S ADDRESS REDACTED MCGEE, MICHAEL HARRIS ADDRESS REDACTED MCGEHEE, BRADLEY CHASE ADDRESS REDACTED MCGLINCHEY STAFFORD PLLC 301 MAIN STREET SUITE 1400 BATON ROUGE LA 70801 MCGLINCHEY STAFFORD TRUST CATHERINE HAWS 601 POYDRAS ST SUITE 1200 NEW ORLEANS LA 70130 MCINNES COOPER WYLIE SPICER PURDY'SWHARF TOWER II 1300-1969 UPPER WATER STREET HALIFAX B3J2V1 CANADA MCINNIS, JON J ADDRESS REDACTED MCKAY, JORDAN DEVON ADDRESS REDACTED MCKENZIE, GRAEME H ADDRESS REDACTED MCKIE, CHRISTOPHER W ADDRESS REDACTED MCLAUGHLIN, KYLE ANDREW ADDRESS REDACTED MCLEAN, IAN HENRY ADDRESS REDACTED MCLELLAN, RYAN MATTHEW ADDRESS REDACTED MCLINDON, DUNCAN JAMES ADDRESS REDACTED MCMAHON, WILLIAM JAMES ADDRESS REDACTED MCMASTER CARR SUPPLY CO SUA RECIPIENT PO BOX 7690 CHICAGO IL 60680-7690 MCMILLAN, KENNETH S ADDRESS REDACTED MCMILLAN, MATTHEW G. ADDRESS REDACTED

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 43 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 46 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country MCMILLAN, SUSAN G ADDRESS REDACTED MCMILLION, DEANNA C ADDRESS REDACTED MCMURTRY, BRADY ALLEN ADDRESS REDACTED MCNABB, CALVIN GENE ADDRESS REDACTED MCNEELY, MARVIN H ADDRESS REDACTED MCNIEL, JORDYN PAIGE ADDRESS REDACTED MCPHERSON, GREGORY STEPHEN ADDRESS REDACTED MCREE, RYAN THOMAS ADDRESS REDACTED MCSWAIN, LANDRENEAU BAHNESS ADDRESS REDACTED MEADE, FRANCIS SCOTT ADDRESS REDACTED MEASUREMENT TECHNOLOGIES KAY PORCHE PO BOX 4413 HOUMA LA 70361 MEDGROUP OFFSHORE DISTRIBUIDOR VITOR VARGAS AV. JOSE ALVARES AZEVEDO, 97 MACAE RJ 27971-340 BRAZIL MEDIANT COMMUNICATIONS LLC TERESA DRAPER PO BOX 29976 NEW YORK NY 10087-9976 3850 N. CAUSEWAY MEDIATION ARBITRATION ROBERT JENKS PROFESSIONAL SERVICES, INC LAKEWAY CENTER II, SUITE 400 BLVD METAIRIE LA 70002 MEDICAL AUDIT CONSULTANTS INC CONNIE BOUSQUET 105 MARINERS ISLAND MANDEVILLE LA 70448 CIUDAD DEL MEDICINA LABORAL CARMEN DR. FERNANDO TERAL FLORES CALLE 55 NO 93 COLONIA MIAMI CARMEN CAMPECHE 24115 MEXICO MEDINA, HUMBERTO ADDRESS REDACTED MEJIA, KIMBERLY L. ADDRESS REDACTED MELACO SISTERS HARDWARE LAUREN MELANCON PO BOX 417 CUTOFF LA 70345 MELANIO, JHONARD SALAVER ADDRESS REDACTED MELE PRINTING, INC. JENNIFER ANDERSON-SUA RECIPIEN 619 N. TYLER STREET COVINGTON LA 70433 MELLO, ADAM J ADDRESS REDACTED MELO, DANIELLE VALENCA DE ALBUQUERQUE ADDRESS REDACTED MELO, GILVAN DE OLIVEIRA ADDRESS REDACTED MEMORIAL HERMAN MEMORIAL ELIZABETH LUCIO 1120 BUSINESS CENTER DRIVE SUITE 110 HOUSTON TX 77043 MEMORIAL HERMAN MEMORIAL CITY JERRY O'NEIL JR PO BOX 301208 DALLAS TX 75303 MEMORIAL HERMAN WEST HOUSTON JASMINE 970 CAMPBELL ROAD HOUSTON TX 77024 MENDES E SEGALOTE SERVICOS DE CARLA SEGALOTE RUA PROFESSOR GUSMAO 494 BAIRRO PRAIA CAMPISTA MACAE RJ 27923-311 BRAZIL MENDEZ GOMEZ, JORGE LUIS ADDRESS REDACTED MENDEZ LOPEZ, JOSE LUIS ADDRESS REDACTED MENDOZA BERZUNZA, RAUL ADDRESS REDACTED MENDOZA GARCIA, LUIS GUILLERMO ADDRESS REDACTED MENDOZA OJEDA, NOLBERTO MANUEL ADDRESS REDACTED MENESES ZAPATA, MARCO ANTONIO ADDRESS REDACTED MENTZER, ROGER G ADDRESS REDACTED MERAZ DIAZ, ROGELIO ADDRESS REDACTED MERAZ HERRERA, JOSE MANUEL ADDRESS REDACTED MERAZ ZAVALA, LUIS ALFREDO ADDRESS REDACTED MERCED PARTNERS LIMITED PARTNERSHIP C/O MERCED CAPITAL, L.P. ATTN: STUART BROWN 601 CARLSON PARKWAY, SUITE 200 MINNETONKA MN 55305 MERCED PARTNERS V, L.P. C/O MERCED CAPITAL, L.P. ATTN: STUART BROWN 601 CARLSON PARKWAY, SUITE 200 MINNETONKA MN 55305 MERCEDES BENZ OF COVINGTON PAUL GRAFF 8080 WESTSHORE DRIVE COVINGTON LA 70433 MERCER - BRAZIL ROSELI JESUS AV DR CHUCRI ZAIDAN 920-11 920 4 10E11 AND VILA CORDEIRO SAN PAULO SP 04583-904 BRAZIL MERCER HEALTH AND BENEFITS LLC QUENTIN LLOYD PO BOX 730182 DALLAS TX 75373-0182 MERCER QIF FUND PLC C/O PHOENIX INVESTMENT ADVISORS LLC ATTN: BOB BECK / ROBERT YOUREE 420 LEXINGTON AVENUE, SUITE 2040 NEW YORK NY 10170 MERCER QIF FUND PLC - MERCER INVESTMENT FUND 1 C/O PHOENIX INVESTMENT ADVISORS LLC ATTN: BOB BECK / ROBERT YOUREE 420 LEXINGTON AVENUE, SUITE 2040 NEW YORK NY 10170 MERIDIAN GLOBAL CONSULTING LLC JONATHAN MCCONNELL 812 DOWNTOWNER BLVD SUITE A MOBILE AL 36609 MERKL, GREGORY GEORGE ADDRESS REDACTED MERRELL, ROBERT W ADDRESS REDACTED MESSAGEONE INC JOAO MEINHARDT PO BOX 671116 DALLAS TX 75267 METALTEC COMERCIO E SERVICOS EDISON P NUNES SAO DINGO - N 16 LT 2 A PONTA D'AREIA NITERO RJ 24040-045 BRAZIL COL. LOMAS DE BLVD. MANUEL AVILA CAMACHO, NO CHAPULTEP MIGUEL METLIFE MEXICO, S.A. FRANCISCO DE LA GARZA 32. PISOS SKL, 14 A 20 Y PH EC HILDALGO 11000 MEXICO METROPOLITAN GASTROENTEROLOGY EVELYN PO BOX 1520 MARRERO LA 70073-1520 METTE, MILO JASON ADDRESS REDACTED METZ, TALIA ROSE ADDRESS REDACTED MEXIA LIZARRAGA, JOSE GUADALUPE ADDRESS REDACTED MEXICAN MERCHANT MARINE MEXICO MEYER, KYLE ALLEN ADDRESS REDACTED MEYERS, LOUIS LEE ADDRESS REDACTED MEZZALIRA COMERCIO E IMPOR LEANDRO SOUZA AV MARIA DAS DORES PIMENTEL600 MACAE RJ 27943 BRAZIL MHN SERVICES MURARI DESAI BANK OF AMERICA PO BOX 742106 LOS ANGELES CA 90074-2106 MHSC ENERGY MANAGEMENT LLC GINA ROBNETT PO BOX 10048 COLLEGE STA TX 77842-0048 MICHAEL CEBUHAR C/O UBS ADDRESS REDACTED MICHAEL CEBUHAR C/O UBS ADDRESS REDACTED

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 44 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 47 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country ENERGY MICHAEL PISANI & ASSOCIATES MICHAEL PISANI 1100 POYDRAS STREET SUITE 1430 CENTER NEW ORLEANS LA 70163 MICHAEL QUIGLEY C/O NATIONAL FINANCIAL SERVICES LLC ADDRESS REDACTED MICROSOFT CORPORATION FRANCIA NIKKI HIWATIG C/O BANK OF AMERICA LOCKBOX # DEPT 842467 DALLAS TX 75207 MID ATLANTIC CAPITAL CORP MERCEDES INGRAM PO BOX 23368 PITTSBURGH PA 15222 MID ATLANTIC ENGINEERING TECH LAURIE SWICEGOOD - SUA RECIPEN 1501 CROSSWAYS BLVD STE E CHESAPEAKE VA 23320 MID CAPE MEDICAL CENTER 675 PARAMOUNT DR STE 203 RAYNHAM MA 02767-5416 MID GULF SHIPPING COMPANY COLLEEN TAVERNA 4760 PONTCHARTRAIN DR SLIDELL LA 70458 MIDWEST DIVISION - RBH LLC MARY NICHOLS PO BOX 404200 ATLANTA GA 30384-4200 MIGUEL ANGEL JIMENEZ SANTOS MIGUEL ANGEL JIMENEZ SANTOS ADDRESS REDACTED MIGUEL ANGEL NOTARIO CASANOVA ROSA MARIA CASANOVA ADDRESS REDACTED MIJANGOS MARTINEZ, JUAN PABLO ADDRESS REDACTED MILITARY SEALIFT COMMAND EAST ANNA PACINDA MILITARY SEALIFT COMMAND 1029 HIGHWAY 33 EAST FREEHOLD NJ 07728 8440 MILITARY SEALIFT COMMAND W STEPHANIE ROPER MILITARY SEALIFT COMMAND 3975 NORMAN SCOTT RD SAN DIEGO CA 92136 MILLAR, ANDREW BOWMAN ADDRESS REDACTED MILLER, DARIN LEE ADDRESS REDACTED MILLER, DEAN MICHAEL ADDRESS REDACTED MILLER, DOUGLAS S. ADDRESS REDACTED MILLER, JARED JUDE ADDRESS REDACTED MILLER, MASON KEITH ADDRESS REDACTED MILTON FENCE COMPANY B H MILTON PO BOX 988 ROBERT LA 70455 MILTON SEILER MATT JONES PO BOX 100396 BIRMINGHAM AL 35210-0396 MILTON, LEON ALAN ADDRESS REDACTED MIMECAST NORTH AMERICA INC JUSTIN BAER DEPARTMENT CH 10922 PALATINE IL 60055-0922 MINISTRY OF COMMUNICATIONS AND TRANSPORT MEXICO MINISTRY OF ECONOMY MEXICO MINYARD, DAVID R ADDRESS REDACTED MIRANDA AND ASSOCIADOS SOFIA RIBEIRO AVENIDA ENGENHERIO DUARTE PACHECO 7 LISBOA 1070 100 PORTUGAL MIRANDA PARTNERS FERNANDO ENRIQUEZ EMILIO CASTELAR 61 12TH FLOOR POLANCO CHAPULTEPEC 11560 MEXICO MIRANDA TROGER, DAVID ANDRES ADDRESS REDACTED MIRANDA VARGAS, JOSE ABRAHAM ADDRESS REDACTED MIRIAM DEL ROSARIO RAMIREZ JUAN ISRAEL VIDAL ORTIZ ADDRESS REDACTED MIS OFFSHORE LLC KELLY RYDER 150 VIRGINIA STREET MOBILE AL 36603 MISSISSIPPI SPORTS MEDICINE 1325 EAST FORTIFICATION STREET JACKSON MS 39202 MITCHELL, DAVID RHYAN ADDRESS REDACTED MIXON, STEPHEN MARQUIS ADDRESS REDACTED MM MARINE CONSULTING LLC MAURICE MARTIN DBA MM MARINE CONSULTING LLC 222 GOLDEN GRAIN RD DUSON LA 70529-4204 MMC INTERNATIONAL CORPORATION MAUREEN EGOR PO BOX 960664 INWOOD NY 11096-0664 MME J. SCHOON RIETDEKKERSTRAAT 16 RIDDERKERK 2984 BM NETHERLANDS MOBILE BAR PILOTS LLC 201 N JACKSON STREET MOBILE AL 36603 MOBILE BAR PILOTS LLC JIMMY POSE PO BOX 831 MOBILE AL 36601 MOBILE INFIRMARY ASSOCIATION PO BOX 2144 MOBILE AL 36652 MODERN ENGINEERED PRODUC SHERRY BRENDEN PO BOX 1074 MANDEVILLE LA 70470 MODEX LLC RAE-LYNNE MOUTON PO BOX 62071 LAFAYETTE LA 70596 MOLLOY, SEAN J. ADDRESS REDACTED MONICA ARACELI MALDONADO JOSE JUAN MENDOZA RODRIGUEZ ADDRESS REDACTED MONICA ARMAND MONICA ARMAND ADDRESS REDACTED MONROY MENDOZA, EMMANUEL ADDRESS REDACTED MONTALVO ARAUZ, FARID URIEL ADDRESS REDACTED MONTEIRO, MARCELO DE SOUZA ADDRESS REDACTED MONTELONGO RAMIREZ, RODOLFO EVENCIO ADDRESS REDACTED MONTERO GONZALEZ, WENDY KARIME ADDRESS REDACTED MONTES RODRIGUEZ, FABIAN ADDRESS REDACTED MONTIEL LUNA, ESTEBAN ADDRESS REDACTED MONTOYA MARQUEZ, ALFREDO ADDRESS REDACTED MONTOYA PENILLA, LUIS FERNANDO ADDRESS REDACTED MONTZ, JESSICA ADDRESS REDACTED MOODY-PRICE LLC JANET POCHE DEPT 232 PO BOX 4869 HOUSTON TX 77210-4869 MOODY'S INVESTOR SERVICES MARC ABUSCH PO BOX 102597 ATLANTA GA 30368-0597 MOON, ANDREW OLIVER ADDRESS REDACTED MOORE, LARRY J ADDRESS REDACTED MOORE, RUSSELL HENRY ADDRESS REDACTED MOOREHEAD MOOREHEAD CITY PILOTS ASSOC ANDREW MITGETT 113 ARENDELL ROOM 112 CITY NC 28557 MORA GONZALEZ, ALBERTO ADDRESS REDACTED MORA LOPEZ, GUSTAVO ALONSO ADDRESS REDACTED MORAES, RAPHAEL CARDOSO DE ADDRESS REDACTED MORAIS, LINCOLN SILVA ADDRESS REDACTED MORALES GERONIMO, DAVID ADDRESS REDACTED MORALES HERNANDEZ, JUAN ADDRESS REDACTED

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 45 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 48 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country MORALES PENA, OSCAR ADDRESS REDACTED MORALES PEREZ, CARLOS JESUS ADDRESS REDACTED MORALES, ELVIN ADDRESS REDACTED MORAN TORRES, HECTOR ENRIQUE ADDRESS REDACTED MORAN TOWING CORPORATION PETER KEYES BANK OF AMERICA PO BOX 409519 ATLANTA GA 30384-9519 MORELOS SILVA, DINO ANTONIO ADDRESS REDACTED MORENO JARA, EDSON ALFREDO ADDRESS REDACTED MORENO JARA, JOSE ALEJANDRO ADDRESS REDACTED MORENO LE BLOHIC, ABRAHAM FRANCISCO ADDRESS REDACTED MORENO OLAIS, LUIS ENRIQUE ADDRESS REDACTED MORENO SHIRMA, JOSE ESAU ADDRESS REDACTED MORENO VELASCO, ANTONIO FRANCISCO ADDRESS REDACTED MORENO, DUSTIN LANE HOWARD ADDRESS REDACTED MORFIN ALVAREZ, CARLOS HUMBERTO ADDRESS REDACTED MORGAN CITY RENTALS JULIE 125 MCCARTY DR BLDG 1 HOUSTON TX 77029 MORGAN, BROOK A ADDRESS REDACTED MORGAN, HEMICHAND ADDRESS REDACTED MORGAN, HERMAN BENTON ADDRESS REDACTED MORGAN, MONICA BELL ADDRESS REDACTED MORGAN, NELSON EVERETT ADDRESS REDACTED MORLEY, TIMOTHY J. ADDRESS REDACTED MORRIS JAMES LLP IMA KING PO BOX 2306 WILMINGTON DE 19899-2306 MORRIS, ALISHA MONIQUE ADDRESS REDACTED MORRIS, ANDREW C ADDRESS REDACTED MORRIS, MARTIN THOMAS ADDRESS REDACTED MORRIS, TAD DAVID ADDRESS REDACTED MORRISON, ANDREW CRONIN ADDRESS REDACTED MORRISON, ROBERT TYNE ADDRESS REDACTED MORRISON, THEODORE T ADDRESS REDACTED MORRISON, THOMAS B ADDRESS REDACTED MORROW, AUSTIN XANTHONY ADDRESS REDACTED MORROW, JAMES DARRELL ADDRESS REDACTED MORSE, DAVID POWELL ADDRESS REDACTED MORTON, RUSSELL G ADDRESS REDACTED MOSCO, KELLY WAYNE ADDRESS REDACTED MOSCOSO CORDOVA, ERIC ADDRESS REDACTED MOSES, BRIAN MAURICE ADDRESS REDACTED MOSLEY, JERIKAH V ADDRESS REDACTED MOTHERSHED, BURNS E ADDRESS REDACTED MOTHERSHED, ROBERT A ADDRESS REDACTED MOTION / VOORHIES SUPPLY CO TAMMY SIMMONS; JOSIE WILEY PO BOX 504606 ST LOUIS MO 63150 MOTION INDUSTRIES ANTHONY BUSH 1605 ALTON ROAD IRONDALE AL 35210 MOTION MEXICO S DE RL DE CV ROGELIO GONZALEZ AVE MIGUEL ALEMAN, #810-B COL LA ENCARRACION APODACO NUEVO LEON 66633 MEXICO FORT MOTOR SERVICES HUGO STAMP INGRID MONROY 3190 S W 4TH AVENUE LAUDERDALE FL 33315 MOTTER, HARRY DOUGLAS ADDRESS REDACTED MOUREY, MATTHEW R ADDRESS REDACTED MOUTINHO BARBOSA, GIAN FERNANDO ADDRESS REDACTED MRI OF LOUISIANA PO BOX 3711 LAKE CHARLES LA 70602 MRS PROFESSIONAL ACCESS SC LTD ROBERTA MURA R SAO BENTO, 09 - SALA 201 RIO DE JANEIRO RJ 20090-010 BRAZIL MS LOGISTICA ADUANEIRA LTDA MARIA EDUARDA F. MARQUES SILVA RUA CONSELHEIRO SARAIVA 28-11 ANDAR CENTRO RIO DE JANEIRO RJ 20091-030 BRAZIL MSA DO BRASIL EQUIPAMENTOS JESSICA BARDELA AV PREFEITO ARISTEU FERREIRA DA SILVA 105 GRANJA DAS CAVALE MACAE RJ 27930-070 BRAZIL MSC GROUP INC ELIZABETH JONES PO BOX 206811 DALLAS TX 75320 MSHS BRASIL ENGENHARIA LTDA JULIO CUNHA AV PASTOR MARTIN LUTHER KING 126 - TORRE - 1000 - SALA 615 RIO DE JANEIRO RJ 20761-120 BRAZIL ATTN: RHONDA MALONE / BERTHA MT. SAN ANTONIO COMMUNITY COLLEGE DISTRICT C/O HILLTOP SECURITIES CASTRO 1100 NORTH GRAND AVENUE WALNUT CA 91789 701 N. ATTN: RHONDA MALONE / BERTHA HAVEN AVE, MT. SAN ANTONIO COMMUNITY COLLEGE DISTRICT C/O HILLTOP SECURITIES CASTRO CITIZENS BUSINESS BANK SUITE 350 ONTARIO CA 91764 MTM RECOGNITION CORPORATION SUSAN BELLOWS-SUA RECIPIENT 3405 SE 29TH ST OKLAHOMA CITY OK 73071 MULICEIRO SERVICOS MARITOMOS RAFAEL MARCELO RUA CARLOS SEIDL 460 CAJU RIO DE JANEIRO RJ 20931-005 BRAZIL MULLEN INC. JANICE MULLEN PO BOX 5542 THIBODEAUX LA 70302 MULLEN, STEPHEN G ADDRESS REDACTED VILA SAO DUQUE DE MULTITEINER COMERCIO LEANDOR SENRA AV OL 1B - LOTE 10 REM 10A 19 PARQUE DUQUE LUIZ CAXIAS 25085-375 BRAZIL MULTIUSOS COMERCIO GABRIELA RUA FIGUEIRA DE MELO 267 SAO CRISTOVAO RIO DE JANEIRO RJ 20941001 BRAZIL MUNDY, MARCUS DEWAYNE ADDRESS REDACTED MACAÉ, RJ, CEP MUNICIPALITY OF MACAE AVENIDA PRESIDENTE SODRÉ, 534 CENTRO 27913-080 BRAZIL

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country RIO DE JANEIRO, MUNICIPALITY OF RIO DE JANEIRO RUA AFONSO CAVALCANTI, 455 CIDADE NOVA RJ - 20211-110 BRAZIL ATTN: AUGUSTO CÉSAR D’ ALMEIDA AV. PRESIDENTE SODRÉ, 534, 2º MUNICÍPIO DE MACAÉ C/O LOCAL ATTORNEY OFFICE OF MACAE SALGADO ANDAR, CENTRO, MACAÉ-RJ CEP 27913-080 BRAZIL ATTN: MARCO ANTONIO FERREIRA MUNICÍPIO DO RIO DE JANEIRO C/O LOCAL ATTORNEY OFFICE OF RIO DE JANEIRO MACEDO TRAVESSA DO OUVIDOR, 4 – CENTRO RIO DE JANEIRO CEP 20040-040 BRAZIL MUNIZ REYES, RAFAEL ADDRESS REDACTED MUNOZ, NESTOR A ADDRESS REDACTED MUNSCH, PHILIP LAWRENCE ADDRESS REDACTED MURNEY, JOHN THOMAS ADDRESS REDACTED MURO VALENZUELA, JESUS ANTONIO ADDRESS REDACTED MURPHY, LONNIE W ADDRESS REDACTED MURPHY, MATTHEW LAWRENCE ADDRESS REDACTED MURRAY & ASSOCIATES KRISTIN DRESCHER 4101 RAVENSWOOD RD SUITE 210 FT LAUDERDALE FL 33312 MURRAY, BRIAN C ADDRESS REDACTED MUSED, BASEM ABDULSALAM ADDRESS REDACTED MWW GROUP LLC STEVEN PAREJA PO BOX 69076 BALTIMORE MD 21264-9076 MY REHAB CONSULTANTS LLC JAVAN TURNER 3027 N JAMES DRIVE SULFOLK VA 23435 MYRTUE, MARK S ADDRESS REDACTED N C MACHINERY CO DENISE KINKER PO BOX 58201 TUKWILA WA 98138-1201 N C POWER SYSTEMS SCOONER RICE PO BOX 58201 TUKWILA WA 98138-1201 N2 SOLUTIONS LLC DONNA ZAUMBRECHER 113 LIBERTY AVENUE LAFAYETTE LA 70508 NABORS US FINANCE LLC. ERNESTO RAMIREZ 515 WEST GREENS ROAD, SUITE 1200 HOUSTON TX 77067 NALLS, MELISSA M ADDRESS REDACTED NANCE INTERNATIONAL INC JENNIFER MCWILLIAMS 2915 MILAM BEAUMONT TX 77701 NAPIER, DARNELL T ADDRESS REDACTED NAQUIN, PEYTON A ADDRESS REDACTED NARYSHEV, ALEXANDRE ADDRESS REDACTED NASCIMENTO SOUZA, CHERMESON JANSEN DO ADDRESS REDACTED NASCIMENTO, RONALDO CESAR LEITE DO ADDRESS REDACTED NASDAQ CORPORATE SOLUTIONS ACCOUNTS RECEIVABLE LOCKBOX 11700 PO BOX 780700 PHILADELPHIA PA 19178-0700 ATTN: CHRISTOPHER WILKOS / JOHN NASSAU LIFE INSURANCE COMPANY C/O NASSAU ASSET MANAGEMENT LLC ROTH 1 AMERICAN ROW - H12 HARTFORD CT 06102 NATAR, ALDRIN MONANA ADDRESS REDACTED NATIONAL MARINE SUPPLIERS INC HELENA 2800 SW 2ND AVE FT LAUDERDALE FL 33315 NATIONAL MARITIME PUBLIC REGISTRY MEXICO NATIONAL OILWELL VARCO NOR KORSVIKFJORDEN INDUSTRIOMRADE SERVICEBOKS 401 KRISTIANSAND N4604 NORWAY NATIONAL RESPONSE CORPORATION MARIAN SCOCCO 3500 SUNRISE HIGHWAY SUITE T103 GREAT RIVER NY 11739 NATIONAL VESSEL DOCUMENTATION 792 T J JACKSON DRIVE FALLING WATERS WV 25419 NATIONWIDE AGRIBUSINESS CUSTOMER SERVICE PO BOX 10479 DES MOINES IA 50306-0479 NATIVIDAD OSORIO DEL VALLE GUADALUPE JIMEZ SANTOS CARRETERA ESTATAL PARAISO DOS BOCAS KM1 COLONIA LIMON PARAISO TB 86600 MEXICO NAUMANN, TIFFANY S ADDRESS REDACTED UNITED NAUTILUS RIGGING (UK)LTD BILL TOON 23 E BURNSIDE DRIVE DYCE ABERDEEN AB21 OHW KINGDOM UNITED NAUTISK FORLAG AS, UK BRANCH ALICIA LUTZ UNIT 1375 AZTEC WEST PARK AVENUE BRISTOL BS32 4RX KINGDOM NAVA PERALTA, OMAR ADDRESS REDACTED NAVA QUEVEDO, CHRISTIAN ARMANDO ADDRESS REDACTED NAVARRETE HIPOLITO, ALDO FABIAN ADDRESS REDACTED NAVARRO DELGADO, JAHIL JOSUE IVAN ADDRESS REDACTED NAVES SAS (ULTRAMAR NETWORK) JORGE BLANCO STREET 100 NO 13-21 302 MEGATOWER BOGOTA COLOMBIA NAVEX GLOBAL INC ACCOUNTS RECEIVABLE PO BOX 60941 CHARLOTTE NC 28260-0941 NAVICO INC DONALD HALL 4500 S. 129TH EAST AVE SUITE 200 TULSA OK 74134 DORDRECHT 3316 NAVICO LOGISTICS EUROPE BV STEPHEN FURR DONKER DUYVISWEG 56 BM NETHERLANDS ALCALDIA BOSQUES DE CIRUELOS NO. 194, MIGUEL 11700, MEXICO NAVIERA ARGOS, S.A. DE C.V. SUITE 201 COLONIA BOSQUES DE LAS LOMAS HIDALGO CITY MEXICO NAVIGATORS INSURANCE COMPANY 1 PENN PLAZA 32ND FLOOR NEW YORK NY 10119 NBSLOG EDUARDO MARIANO R CARLOS SEIXAS, 501 RIO DE JANEIRO RJ 20.931-007 BRAZIL NEAL, CHRISTOPHER CHASE ADDRESS REDACTED NEAL, GROVER BRIAN ADDRESS REDACTED NEAL, JONATHAN R ADDRESS REDACTED NEE, KELLEN J ADDRESS REDACTED NELSON, VALMON G ADDRESS REDACTED NEMESIO, ERNESTO ORIG ADDRESS REDACTED NEOFUNDS BY NEOPOST KRISS THERIOT PO BOX 6813 CAROL STREAM IL 60197-6813 NERI INCLAN, LUIS JOSE ADDRESS REDACTED NERIO VENTURA VELAZQUEZ NERIO VENTURA VELAZQUEZ NICOLAS BRAVO SN COLONIA CNTR PARAISO TB 86600 MEXICO NET SYSTEMS TELECOMUNICACOES IVANEY MASCARENHAS DE CASTRO RUA DO OUVIDOR 604 ROOM 914 CENTRO RIO DE JANEIRO RJ 20040-924 BRAZIL

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 47 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 50 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country NETTO, ALVARO CHRISPIM ROMEIRO ADDRESS REDACTED NEUMANN, AMANDA MASCHIO ADDRESS REDACTED NEUNERPATE SHANNON MOTTY 1001 WEST PINHOOK ROAD STE 200 LAFAYETTE LA 70503 NEURO TECHNOLOGY INSTITUTE LLC JOAN STEPHEN 3535 S. SHERWOOD FOREST SUITE 247 BATON ROUGE LA 70816-2255 NEUROLOGICAL ASSOCIATES OF LOU PO BOX 51126 LAFAYETTE LA 70505-1126 NEUROSURGICAL APPLICATIONS LLC KASIE PO BOX 52267 LAFAYETTE LA 70505 NEW HORIZONS COMPUTER LEARNING MELISSA MINCHEW 2800 VETERANS. BLVD. SUITE 330 METAIRIE LA 70002 NEW INDUSTRIES, INC. THERESA J. GROW PO BOX 2176 MORGAN CITY LA 70381 NEW ORLEANS OILFIED BOWLING BRENDA REILLY PO BOX 8731 METAIRIE LA 70011-8731 NEW ORLEANS PHYSICIAN SERVICES MELISSA PO BOX 733564 DALLAS TX 75373 NEW SAFETY COM E INST DE EQUIP FABIO SORATTO RUA ANTONIO NIERO 242 FUNDOS CENTRO LOUVEIRA SP 13.290-000 BRAZIL NEW YORK MARINE AND GENERAL INSURANCE COMPANY 156 WILLIAM STREET ROOM 1202 NEW YORK NY 10038 NEW YORK STATE CORPORATION TAX PROCESSING UNIT PO BOX 1909 ALBANY NY 12201-1909 NEW YORK STATE DEPARTMENT OF ENVIRONMENTAL CONSERVATION 625 BROADWAY ALBANY NY 12233-0001 NEW YORK STOCK EXCHANGE INC. PO BOX #223695 PITTSBURGH PA 15251-2695 NEWBALL LEAL, JOSHUA FARID ADDRESS REDACTED NEXT GENERATION LOGISTICS LLC ANDREA COMPASS - SUA RECIPIENT 4728 UTICA STREET SUITE 100 METAIRIE LA 70006 COPACABAN NFX COMBUSTIVEIS MARITIMOS AVENIDA ATLANTICA 1130 6 ANDAR A RIO DE JANEIRO RJ 22021-000 BRAZIL NGUYEN, DANIEL L ADDRESS REDACTED NI SAT TELECOMUNICACOES LTDA MARCIONEI GODIM RUA ALAN KARDEC 10 LOJAS 06 E 07 CAJUEIROS MACAE RJ 27915-080 BRAZIL NICAUD, MICHAEL J ADDRESS REDACTED NICHOLAS J. PERSICH ADDRESS REDACTED NICHOLAS L SWYKA NICHOLAS L SWYKA ADDRESS REDACTED NICHOLAS, DAISY K ADDRESS REDACTED NICHOLS, JOEL G ADDRESS REDACTED NICHOLS, WILLIAM C ADDRESS REDACTED NICOLL'S LIMOUSINE SERVICE INC KAREN THIBODEAUX - SUA RECIP 4305 WILLIAMS BLVD KENNER LA 70065 NICOSIA, ALEXANDER JAMES ADDRESS REDACTED NIETO DURAN, DAVID RUBEN ADDRESS REDACTED NINO, ERIC L ADDRESS REDACTED NISCHOL PERSAD ADDRESS REDACTED NO/BR STEAMSHIP PILOTS ASSOC. TONY 2805 HARVARD AVE STE 102 METAIRIE LA 70006 NOLAN, BENJAMIN JAMES ADDRESS REDACTED NOLAN, JOSEPH PETER ADDRESS REDACTED NOLT, ROBERT A ADDRESS REDACTED NOON, SETH M ADDRESS REDACTED NORDIN, MATTHEW G ADDRESS REDACTED NORMAN, ROBERT JEFFREY ADDRESS REDACTED NORPEM COMERCIAL LTDA EMERSON FORTES RUA FIGUEIRA DE MELO, 328 SAO CRISTOVAO RIO DE JANEIRO RJ 209401000 BRAZIL NORRIS, SCOT MICHAEL ADDRESS REDACTED NORSAFE MARINE & OFFSHORE SERV WILLIAM GARCIA 668 DISTRIBUTORS ROW SUITE D JEFFERSON LA 70123 NORTE, GREGORY F ADDRESS REDACTED NORTE, TIFFANY L ADDRESS REDACTED NORTH BAY GENERAL HOSPITAL INC PO BOX 359 SAN ANTONIO TX 78292 NORTH FLORIDA SHIPYARD INC CAROL CREWS 2060 EAST ADAMS STREET JACKSONVILLE FL 32202 NORTH LA ORTHOPAEDIC AND SPORT CHRISTINA JOHNSON AND SPORTS MEDICINE CLINIC 1501 LOUISVILLE AVENUE MONROE LA 71201 NORTH SEA HAGLAND SHIPBROKERS FERDINAND UHL AM SANDTORKAI 23 HAMBURG 20457 GERMANY NORTH, STEVEN WILSON ADDRESS REDACTED NORTH, VINCENT LEON ADDRESS REDACTED NORTHLAKE SHIPYARD INC RICHARD KELLY 1441 N. NORTHLAKE WAY SEATTLE WA 98103 NORTHPARK CORPORATE II, L.L.C. TINA CROCHET C/O STERLING PROPERTIES LLC 109 NORTHPARK BLVD SUITE 300 COVINGTON LA 70433 NORTHSHORE CRANE AND EQUIPMENT BRENDA GUTTUSO 16033 KUHN ROAD COVINGTON LA 70435 NORTHSHORE TECHNICAL COMMUNITY LORAN PIGOTT 65556 CENTERPOINT BLVD LACOMBE LA 70445 NORTHSTAR ENGINEERING LLC MICHAEL MCINTOSH 500 WOODCOCK CT. SLIDELL LA 70461 NORTHWEST FLORIDA SURGICAL 4600 N. DAVIS HWY PENSACOLA FL 32503 NORTHWESTERN MUTUAL LIFE TAYLOR DAVIS MCB #94908 PO BOX 3181 MILWAUKEE WI 53201-3181 NOTARY OFFICE RJ BRAZIL DEISE ROSSONI DE MATOS AV DAS AMERICAS 16401 SALA 206 RIO DE JANEIRO RJ 22790 704 BRAZIL NOV PORTABLE POWER #633 DOLLY CHERAMIE-SUA RECIPIENT PO BOX 202631 DALLAS TX 75320 NOV RIG SOLUTIONS SPARES ANGELA WHITE PO BOX 201202 LEDGER 183 DALLAS TX 75320-1202 NOVACARE REHABILITATION PATTY REYNOLDS PO BOX 536889 ATLANTA GA 30353 NOVALYNX CORPORATION MARY SWEETSER PO BOX 240 GRASS VALLEY CA 95945 NRE POWER SYSTEMS, INC MONA SPIEGELHAUER 8440 SOLUTIONS CENTER CHICAGO IL 60677-8004 NS LIFTING AMERICA INC IVY MARTINEZ 3522 BACOR RD HOUSTON TX 77084 CENTRO - RIO DE NUMBER ONE CONSULTORES ASSOC REINALDO RUA DO CARMO 08/8 ANDAR JANEIRO RJ 20011-020 BRAZIL NUNES, PAMELA VALE SOARES ADDRESS REDACTED

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 48 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 51 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country NUNEZ FERNANDEZ, ROLANDO ANTONIO ADDRESS REDACTED NUNEZ RAMOS, JUAN CARLOS ADDRESS REDACTED NUTRIQUALY SEA SOLUCOES LUCIENE FELIZARRO AV AVENIDA PREFEITO ARISTEU FERREIRA MACAE RJ 27930-070 BRAZIL NVD CENTRO DE NEGOCIOS NOELLE MAGALHAES AV NOSSA SENHORA DA GLORIA 2987 MACAE RJ 27.920-360 BRAZIL NVI, LLC SAM J HOLLOWAY JD NONDESTRUCTIVE AND VISUAL INSP PO BOX 1690 GRAY LA 70359 NW SURGERY CENTER 5215 HOLLISTER STREET HOUSTON TX 77040 NYS DEPARTMENT OF STATE DIVISION OF CORPORATION 99 WASHINGTON AVE ALBANY NY 12231-0001 O TITULAR DAS BATERIAS LTDA MIRIAM SANTANA RUA NAIR 212 LOJA A RIO DE JANEIRO RJ 21021 600 BRAZIL O'BANNON, CODY WAYNE ADDRESS REDACTED OBIAKOR, UCHECHI ADDRESS REDACTED O'BRIEN, GARY IRVIN ADDRESS REDACTED O'BRIEN, RICHARD DYLAN ADDRESS REDACTED O'BRIENS RESPONSE MANAGEMENT PAUL RUTHERFORD PO BOX 534967 ATLANTA GA 30353-4967 OCCUPATIONAL MEDICINE ERIN BOURGEOIS 144 VALHI LAGOON CROSSING HOUMA LA 70360 OCEANEERING INTERNATIONAL INC AMANDA BOURQUE PO BOX 731943 DALLAS TX 75373-1943 OCEANPACT GEOCIENCIAS LTDA PEDRO SILVA RUA DA GLORIA 122 - 10 ANDAR GLORIA RIO DE JANEIRO RJ 20241-180 BRAZIL OCEANS WEST MARINE INDUSTRIAL ROSA MIKESELL 2886 MAIN STREET SAN DIEGO CA 92113 OCHSNER CLINIC FOUNDATION CATHERINE HERNAEZ RN 1221 S CLEARVIEW PKWY BLDG A 2ND FLOOR NEW ORLEANS LA 70123 OCHSNER ST ANNE GENERAL HOSPIT 4608 HIGHWAY 1 RACELAND LA 70394-2623 O'CONNOR, WILLIAM GEORGE ADDRESS REDACTED ODDO, COLEEN MARIE ADDRESS REDACTED ODEON CAPITAL GROUP LLC ANDREW FELDSCHREIBER 750 LEXINGTON AVE 27TH FLOOR NEW YORK NY 10022 ODONTOPREV SA RONALDO SANTOS OF KNTS ALAMEDA TOCANTINS 125-150 ANDAR BARUERI SP 06455-020 BRAZIL ODORLE-AYALA, KEVEN ADDRESS REDACTED OFFICE DEPOT C/O BANKRUPTCY PROCESSING ATTN: HARRIET LEWKOWITZ 6600 N MILITARY TRAIL BOCA RATON FL 33496 OFFICE DEPOT TITO ESPINAL - SUA RECIPENT PO BOX 630813 CINCINNATI OH 45263 CD DEL CARMEN OFFICE DEPOT DE MEXICO MARIA LUISA MUJICA AC CONCORDIA S/N COL. ASA PONIENTE CAMP 24100 MEXICO OFFICE OF THE U.S. TRUSTEE ATTN: JAYSON B. RUFF; HECTOR DURAN, JR 515 RUSK STREET SUITE 3516 HOUSTON TX 77002 OFFSHORE INLAND MARINE KRISTIE ANDERSON 890 SOUTH PALAFOX SUITE 202 PENSACOLA FL 32502 OFFSHORE MARINE SERVICE ASSOC. KELLY 935 GRAVIER STREET SUITE 2040 NEW ORLEANS LA 70112 OFFSHORE REPAROS NAVAIS LTDA RUA DELEGADO WALDIR GUILHERME 14, ILHA DA CONCEICAO NITEROI RJ BRAZIL OFFSHORE SERVICE VESSELS LLC SANDRA GUIDRY 16201 EAST MAIN ST CUT OFF LA 70345 OFFSHORE SOLUTIONS B.V. WIM VERMEER POST OFFICE BOX 212 IJUMIDEN 1970AW NETHERLANDS OFFSHORE SUPPLIERS INC. WAYNE ST JOHN - SUA RECIPIENT PO BOX 821 METAIRIE LA 70004-0821 OFFSHORE TOWING INC CELENA ROUSSE PO BOX 1463 LAROSE LA 70373 OGDEN AND EPKER LLC JANET ISTRE 2450-A OLD SHELL ROAD MOBILE AL 36607 1114 AVENUE OF THE AMERICAS - OHA CENTRE STREET PARTNERSHIP, LP C/O OAK HILL ADVISORS ATTN: JENNIFER COHEN; SHILPA WANI 27TH FLOOR NEW YORK NY 10036 1114 AVENUE OF THE AMERICAS - OHA KC CUSTOMIZED CREDIT MASTER FUND, LP C/O OAK HILL ADVISORS ATTN: JENNIFER COHEN; SHILPA WANI 27TH FLOOR NEW YORK NY 10037 1114 AVENUE OF THE AMERICAS - OHA STRATEGIC CREDIT MASTER FUND II, LP C/O OAK HILL ADVISORS ATTN: JENNIFER COHEN; SHILPA WANI 27TH FLOOR NEW YORK NY 10038 1114 AVENUE OF THE AMERICAS - OHA STRUCTURED PRODUCTS MASTER FUND D, LP C/O OAK HILL ADVISORS ATTN: JENNIFER COHEN; SHILPA WANI 27TH FLOOR NEW YORK NY 10039 OHC, INC ACCOUNTS RECEIVABLE DEPT 3356 DALLAS TX 75312-3356 OIL FILTER SERVICE INC IRMA ALVAREZ 2636 MAIN STREET SAN DIEGO CA 92113 OIL STATES SKAGIT SMATCO, LLC CHRISTINE BRUNET PO BOX 54983 NEW ORLEANS LA 70154-4983 O'KANE, JAMES JOSEPH ADDRESS REDACTED O'KEEFE, JOHNATHAN THOMAS ADDRESS REDACTED OLAN MADRIGAL, CARLOS ALBERTO ADDRESS REDACTED OLD REPUBLIC UNION INSURANCE COMPANY 307 NORTH MICHIGAN AVE CHICAGO IL 60601 OLDHAM, ALISA F ADDRESS REDACTED O'LEARY, ANDREA ADDRESS REDACTED OLEO HIDRUALICA COMERCIO JESUS PEDRO AV PREFEITO ARISTEU FERREIRA DA SILVA 1885 NOVO CAVALEIROS MACAE RJ BRAZIL OLIVARES TAPIA, RODRIGO DOMINGO ADDRESS REDACTED OLIVAS BELTRAN, ANUAR ADDRESS REDACTED OLIVEIRA FILHO, EDUARDO SEVERO DE ADDRESS REDACTED OLIVEIRA, AECIO DHIOUSE DE ADDRESS REDACTED OLIVEIRA, ANDRE LUIZ BARBOSA DE ADDRESS REDACTED OLIVEIRA, GERLANE GOMES DE ADDRESS REDACTED OLIVEIRA, PEDRO GABRIEL ADDRESS REDACTED OLSEN, JOSHUA R ADDRESS REDACTED OLVERA GUEVARA, RAMON ADDRESS REDACTED OLYMPIC MEDICAL CENTER OLYMPIC MEDICAL CENTER 939 CAROLINE STREET PORT ANGELES WA 98362 OLYMPIC MEDICAL PHYSICIANS CENTRAL BILLING OFFICE PO BOX 850 PORT ANGELES WA 98362-6247 OMI ENVIRONMENTAL SOLUTIONS C. BAZILE - SUA RECIPIENT 131 KEATING DRIVE BELLE CHASSE LA 70056 TRINIDAD & OMICRON ENGINEERING SERVICES ANCIL RAMHARACK LOT #4 MONICA ST PT PLEASANT PARK CUNUPIA TOBAGO OMIEXPERIENCE SA GUILHERME GUERRA AV JURUBATUBA, 460 SAO PAULO SP SP 04583-100 BRAZIL

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 49 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 52 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country ONE CALL MEDICAL INC PO BOX 206821 DALLAS TX 75320-6821 ONE LOGIN INC SHEELA POKHAREL 100 CALIFORNIA ST FLOOR 9 SAN FRANCISCO CA 94111 ONE SOURCE PROFESSIONAL SEARCH DAVE MOUNT, CPC 4070 LONESOME ROAD STE B MANDEVILLE LA 70448 ONTIVEROS REYES, KENIA LICETH ADDRESS REDACTED OPENSIDED MRI OF NEW ORLEANS PO BOX 505238 ST. LOUIS MO 63150-5238 AVENIDA DAS AMERICAS, 3500, BLOCO BARRA DA RIO DE JANEIRO, OPINVEST PARTICIPAÇÕES E SERVIÇOS LTDA C/O LION ADVOGADOS ASSOCIADOS ATTN: JOSÉ ALFREDO LION 7, SALAS 327 A 329 PARTE TIJUCA CEP 22.640-102 BRAZIL OPPENHEIMER & CO INC BRUCE BUCHANAN 5 BROAD STREET NEW YORK NY 10004 OPUTA, IFEANYI PETER ADDRESS REDACTED OPY CREDIT CORP BRUCE BUCHANAN 85 BROAD STREET 4TH FLOOR NEW YORK NY 10004 ORANGE, WILLIAM ROBERT ADDRESS REDACTED ORDAZ RIVERA, JEANCARLO ADDRESS REDACTED ORDOGNE, JEFFREY CURTIS ADDRESS REDACTED ORIENTAL FINANCIAL GROUP TRUST OPERATIONS PO BOX 191429 SAN JUAN PR 00919-1429 PUERTO RICO ORLANDO LUIS HENNE OTERO ORLANDO ORTERO ADDRESS REDACTED ORLEANS CARDIOVASCULAR ASSOC PO BOX 73701 METAIRIE LA 70033-3701 ORLIN, MICHAEL B ADDRESS REDACTED ORONA GARCIA, RAMON ERNESTO ADDRESS REDACTED O'ROURKE MARINE SERVICES LLC KRISTA GAUER PO BOX 301457 DALLAS TX 75303 ORR, KELVIN B ADDRESS REDACTED ORTHOMED JACOB DBA ORTHOMED 1900 WEST GRAY STREET #130788 HOUSTON TX 77019 ORTHOPAEDIC ASSOC. NEW ORLEANS GEORGE R. CARY, JR. M.D. 3434 PRYTANIA STREET SUITE 450 NEW ORLEANS LA 70115 FORT WALTON ORTHOPAEDIC ASSOCIATES PA JAMIE 1034 MAR WALT DRIVE SUITE 100 BEACH FL 32547-6637 ORTHOPAEDIC GROUP THE PO BOX 86144 MOBILE AL 36689-6144 ORTIZ LEYVA, RENE ADDRESS REDACTED ORTIZ, FELECIA LYNETTE ADDRESS REDACTED ORTTECH, INC. KATE HARRIS 32425 AURORA ROAD SOLON OH 44319 OSAGHAE, ITEM DEGHI ADDRESS REDACTED CENTRO - RIO DE OSBS AFRETAMENTOS E CONSULTOR ROGERIO ABRUZZINI RUA DA ASSEMBLEIA 10 SALA 3001 JANEIRO RIO DE JANEIRO RJ 20011-901 BRAZIL OSEGUERA DE LA PARRA, J. JESUS ADDRESS REDACTED OSER, BRENDA D. ADDRESS REDACTED OSUNA GUTIERREZ, RAMON EDUARDO ADDRESS REDACTED OSUNA HERNANDEZ, EMANUEL ADDRESS REDACTED OSUNA LIZARRAGA, JOSE SANTIAGO ADDRESS REDACTED OSUNA MARTINEZ, BENNY ALEJANDRO ADDRESS REDACTED OSUNA TIRADO, MANUEL ADDRESS REDACTED OSUNA WONG, MANUEL ALEJANDRO ADDRESS REDACTED OSVDPA BEN BERSON 201 ST. CHARLES AVE SUITE 114-274 NEW ORLEANS LA 70170 OUR LADY OF LOURDES REGIONAL LEOTHA GUSS 4801 AMBASSADOR CAFFERY PKWY LAFAYETTE LA 70508 OUTLAND TECHNOLOGY JEFFREY MAYFIELD 38190 COMMERCIAL CT SLIDELL LA 70458 OVER SEA COMERCIO INSPECOES WAGNER DOS ANJOS R NOVA JERSEY BOA VISTA SAO GONCALO RIO DE JANEIRO RJ 24466-240 BRAZIL OWENS, ELDRIDGE D ADDRESS REDACTED OWENS, KRISTY L ADDRESS REDACTED P3 GLOBAL PERSONNEL LLC KELLY HEBERT PO BOX 3617 HOUMA LA 70361 P3 SERVICOS DE TRANSPORTES FILIPE FIUZA RUA PORENA 126 RAMOS RIO DE JANEIRO RJ 21040-140 BRAZIL PACER SERVICE CENTER PO BOX 71364 PHILADELPHIA PA 19176-1364 PACHECO TORRES, DIEGO MAURICIO ADDRESS REDACTED PACIFIC GULF WIRE ROPE INC. C PLAISANCE 1504 ENGINEERS ROAD BELLE CHASSE LA 70037 PACIFIC INSURANCE COMPANY 2200 GENG ROAD #200 PALO ALTO CA 94303 PACIFIC MARINE & INDUSTRIAL TAMMY BOAZ PO BOX 70520 RICHMOND CA 94807-0520 PACIFIC NEUROSURGERY AND SPINE LORI WOOSLEY 3590 CAMINO DEL RIO NORTH SUITE 200 SAN DIEGO CA 92108-1716 1130 WEST PENDER STREET SUITE PACIFIC PILOTAGE AUTHORITY ASHNI RAM 1000 VANCOUVER BC V6E 4A4 CANADA PACIFIC SHIP REPAIR SHIRLEY ALLEN 1625 RIGEL STREET SAN DIEGO CA 92113 PADIAL, ROGERIO MATEUS ADDRESS REDACTED PADILLA QUINTERO, FRANKLIN NILZON ADDRESS REDACTED PAEZ CRESPO, ANGEL DAVID ADDRESS REDACTED PAGAN, IRAN ADDRESS REDACTED PAGE, CHRISTOPHER M ADDRESS REDACTED PAILLANT, DAPHNIE ADDRESS REDACTED PALACIOS, RICHARD ADDRESS REDACTED PALESTINA, KORI B. ADDRESS REDACTED PALFINGER DREGGEN DO BRASIL YURI NARBAL RUA LAURO MULLER 116 - SALA 4403 - BOTAFOGO RIO DE JANEIRO RJ 22290-160 BRAZIL PALFINGER MARINE USA INC HILLARY GARY - SUA RECIPIENT DEPT 3532 PO BOX 123532 DALLAS TX 75312-3532 PALM BEACH HARBOR PILOTS LYNN HANSEN 200 EAST 13TH STREET SUITE B RIVIERA BEACH FL 33404-6946 WEST PALM PALM BEACH PATHOLOGY PA PO BOX 4454 WEST PALM PLAZA BEACH FL 33402-4454

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country PALOMO LOPEZ, ROGER ADDRESS REDACTED PALUMBO, KENNETH TODD ADDRESS REDACTED PANDORA SELECT PARTNERS, LP C/O WHITEBOX ADVISORS ATTN: SCOTT SPECKEN 3033 EXCELSIOR BLVD, SUITE 300 MINNEAPOLIS MN 55416-4675 PANDORA SELECT PARTNERS, LP C/O WHITEBOX ADVISORS, LLC 280 PARK AVE, SUITE 43W NEW YORK NY 10017 PANDORA SELECT PARTNERS, LP C/O WHITEBOX ADVISORS, LLC 3033 EXCELSIOR BLVD STE 500 MINNEAPOLIS MN 55416-4682 PANDORA SELECT PARTNERS, LP C/O WHITEBOX ADVISORS, LLC ATTN: SCOTT SPECKEN 3033 EXCELSIOR BLVD, SUITE 300 MINNEAPOLIS MN 55416-4675 PANDY, MARVIN E ADDRESS REDACTED PANEL SPECIALISTS INC ABBY LEDET PO BOX 4239 HOUMA LA 70361 PANTHER HELICOPTER INC. HOLLY BRASSETTE 2017 ENGINEERS ROAD BELLE CHASSE LA 70037 PAPE, RYAN P ADDRESS REDACTED PARADA CALLEJAS, LUIS FELIPE ADDRESS REDACTED PARADIGM ANESTHESIA PA ELIZABETH 7956 VAUGHN RD # 165 MONTGOMERY AL 36116 PARAMOUNT URGENT CARE INC SHEREEN 8640 EAST CR 466 SUITE A THE VILLAGES FL 32162 PARENT, DEREK J ADDRESS REDACTED PARHAM-LANDRY, MICHAEL ADDRESS REDACTED PARISH ANESTHESIA AMBULATORY ACCOUNTS RECEIVABLE PO BOX 62600 DEPT 1425 NEW ORLEANS LA 70162-2600 PARISH ANESTHESIA ASSOCIATES PO BOX 62600 DEPT. 1404 NEW ORLEANS LA 70162 PARISH ANESTHESIA OF HARVEY ANTHONY GETTYS PO BOX 919148 DALLAS TX 75391-9148 PARISH ANESTHESIA OF JEFFERSON SHARON MARTIN PO BOX 919190 DALLAS TX 75391-9190 PARISH ANESTHESIA OF LAFAYETTE ALLISON JONES PO BOX 1123 JACKSON MI 49204 PARK PLACE TECHNOLOGIES LLC KRISTIE PHELPS - SUA RECIPIENT PO BOX 78000 DEPT 781156 DETROIT MI 48278 PARK, JAMES A ADDRESS REDACTED PARKER SANCHEZ, EDUARDO ENRIQUE ADDRESS REDACTED PARKER, CHRISTOPHER B ADDRESS REDACTED PARKER, EARL R ADDRESS REDACTED PARKER, ERIC QUEINTRELL ADDRESS REDACTED PARKER, JUAN F ADDRESS REDACTED PARKER, MICHAEL N ADDRESS REDACTED PARKER, MICHAEL T. TIMOTHY ADDRESS REDACTED PARKER, ROBIN W ADDRESS REDACTED PARKER, THOMAS L ADDRESS REDACTED PARRISH, CORY D ADDRESS REDACTED PARSLEY, JESSE J ADDRESS REDACTED PARSON, CHARLES W. ADDRESS REDACTED PARSONS, JAMES SCOTT ADDRESS REDACTED PARTIDA CAZARES, ALEJANDRO ADDRESS REDACTED PARTIDA PRECIADO, ABEL ADDRESS REDACTED PASCACIO CHEIN, JORGE ADDRESS REDACTED PASCAGOULA BAR PILOTS LANA SELF PO BOX 2156 PASCAGOULA MS 39569-2156 PASSPORT HEALTH MICHELE EICHHORN RN BSN DBA PASSPORT HEALTH 3621 RIDGELAKE DR SUITE 206 METAIRIE LA 70002 PAT STOCKMAN PAT STOCKMAN ADDRESS REDACTED PATEL, SAJAN NEIL ADDRESS REDACTED PATHOLOGY ASSOCIATES MICHAELA KEMP DEPT WS206 PO BOX 509015 SAN DIEGO CA 92150-9015 PATRICIA B. MELCHER ADDRESS REDACTED PATRIOT ARMORED SYSTEMS LLC KATHY CANDEE - SUA RECIPIENT PO BOX 400 LENOXDALE MA 01242 PATRON ZUNIGA, OSCAR ALEJANDRO ADDRESS REDACTED PATRON, ENRIQUE ALBERTO ADDRESS REDACTED PATSCHKE, ADAM G ADDRESS REDACTED PAUL HASTINGS LLP LESLIE PLASKON 200 PARK AVENUE NEW YORK NY 10166 PAUL M. VAN DEVENTER MD ANGELA 2000 PRESERVE LAKE DR STE D COVINGTON LA 70433-5340 PAULA, ADRIANO ANTONIO DE ADDRESS REDACTED PAULEY, TASHA RACHELLE ADDRESS REDACTED PAULO ROBERTO PASCOAL MIRANDA PAULO ROBERTO PASCOAL MIRANDA ADDRESS REDACTED PAVLICH, GREGORY ALAN ADDRESS REDACTED PAX IMOVEIS LTDA PATRICIA ESTELA AV DAS AMERICAS 3500 GRUPO 337 BLOCO 4 RIO DE JANEIRO RJ 22640102 BRAZIL PAYNE, BRENT CORY ADDRESS REDACTED PAYNE, ELIZABETH GRACE ADDRESS REDACTED PAYNE, STINSON NORVELL ADDRESS REDACTED PAYNE, THEOPIUSE DEE ADDRESS REDACTED PAZ, FORTUNATO A ADDRESS REDACTED PC MALL DEL ROSARIO STANLEY LOS ANGELES CA 90074-5327 PCAOB PO BOX 418631 BOSTON MA 02241-8631 PCM C/O INSIGHT DIRECT USA, INC ATTN: MICHAEL WALKER 6820 S. HARL AVE TEMPE AZ 85283 PEACEHEALTH ROAXNE PO BOX 1588 VANCOUVER WA 98668-1588 PEARL MEYER & PARTNERS DEIRDRE GALLAGHER - SUA RECIPI PO BOX 678025 DALLAS TX 75267-8025 PEARSON, MARC ANDREW ADDRESS REDACTED PEARSON, MATTHEW DAVID ADDRESS REDACTED PEC PREMIER SAFETY OPERATIONS CHRISSY MAESTRI - SUA RECIPIEN 233 GENERAL PATTON AVE MANDEVILLE LA 70471 PEDRO LACERDA QUINTANILHA ADDRESS REDACTED PEDRO LACERDA QUINTANILHA ALCIMAR DE AZEVEDO FONSECA ADDRESS REDACTED

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 51 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 54 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country PEDRO, RYAN SCOTT ADDRESS REDACTED PEDROZO CORTES, LUIS ALFREDO ADDRESS REDACTED PEEPLES, CHRISTOPHER D ADDRESS REDACTED PELICAN MARINE DESIGN LLC BRANDON TARAVELLA 124 LAC SAUVAGE LULING LA 70070 PELLUMBI, KELMEND ADDRESS REDACTED PEMOM AUDITORES INDEPENDENTES ADRIANO OLIVEIRA RUA SAO JASE 40 - 4 ANDAR CENTRO RIO DE JANEIRO RJ 20010020 BRAZIL PENA, JOHN ROBERT ADDRESS REDACTED PENNANT SERVICOS MARITIMOS ERIKA KIDO HAHN AVENIDA PRESIDENTE VARGAS 446 - 15 ANDAR CENTRO RIO DE JANEIRO RJ 20071-000 BRAZIL PENNINGTON, JOHN ROBERT ADDRESS REDACTED PENNWELL CORPORATION MARK FISHER 21428 NETWORK PLACE CHICAGO IL 60673-1214 PENSACOLA EMERGENCY PHYSICIANS PO BOX 409703 ATLANTA GA 30384-9703 PENSACOLA LUNG GROUP MDS PA ACCOUNTS RECEIVABLE 5129 NORTH 9TH AVE STE 120 PENSACOLA FL 32504 PENSACOLA RADIOLOGY CONSULTANT KAREN LACKEY PO BOX 9210 PENSACOLA FL 32513 PEOPLE WHO THINK LLC JAY CONNAUGHTON 4250 HIGHWAY 22 SUITE 7 MANDEVILLE LA 70471 PEREDA PEREZ, JOSE LUIS ADDRESS REDACTED PERENYI SERVIÇOS TÉCNICOS DE L MARIO RUA PROJETADA 07 QD B LOTE 15 DUQUE DE CAXIAS RIO DE JANEIRO RJ 25213 187 BRAZIL PERERA, ALFREDO CARLOS TREJO ADDRESS REDACTED PERERA, CP NILUSH MADHAWA ADDRESS REDACTED PEREZ AGUIRRE, EDGAR ADDRESS REDACTED PEREZ BARJAU, NELIS ADDRESS REDACTED PEREZ CORDOVA, DANIEL ADDRESS REDACTED PEREZ CORDOVA, JOSE ISIDRO ADDRESS REDACTED PEREZ DOMINGUEZ, ISIDRO ADDRESS REDACTED PEREZ HERNANDEZ, LUIS ALBERTO ADDRESS REDACTED PEREZ LEON, FRANCISCO JOSUE ADDRESS REDACTED PEREZ PEREZ, GUSTAVO ADDRESS REDACTED PEREZ VENTURA, MIGUEL GUSTAVO ADDRESS REDACTED PEREZ, CHRISTIAN DORIAN ADDRESS REDACTED PERFORMANCE GLASS WORKS LLC DAWN VANBUELOW-SUA RECIPIENT PO BOX 1057 RACELAND LA 70394 PERRY DAMPF DISPUTE SOLUTIONS MARGARET BURLEIGH DBA PERRY DAMPF DISPUTE SOL 721 GOVERNMENT STREET BATON ROUGE LA 70802 PERSAD, FLETCH ADDRESS REDACTED PERSAUD, AMARNAUTH ADDRESS REDACTED PESTA, STEVEN T ADDRESS REDACTED PETERSON, REGINALD NOBERT ADDRESS REDACTED PETRELIS, GEORGE P ADDRESS REDACTED PETROBRAS DISTRIBUIDORA S A FABIANO MIRANDA AV ELIAS AGOSTINHO 665 BLOCO 320 MACAE RJ 27913 350 BRAZIL RIO DE JANEIRO, PETROLEO BRASILEIRO S/A - PETROBRAS ATTN: MARCO NERY FALBO AVENIDA REPÚBLICA DO CHILE, Nº 65 CENTRO RJ, CEP 20031-912 BRAZIL RIO DE JANEIRO, RJ, CEP 20031- PETROLEO BRASILEIRO S/A - PETROBRAS C/O LEGAL DEPARTMENT ATTN: HELIO SIQUEIRA JUNIOR AVENIDA REPÚBLICA DO CHILE, Nº 65 912 BRAZIL PETROLEUM HELICOPTERS, INC LACEY GUILBEAU PO BOX 90808 LAFAYETTE LA 70509 PETROLEUM LABORATORIES, INC. RHONDA GUILFOU - SUA 109 CLEVELAND ST HOUMA LA 70363 PETRONA CERINO DE LA CRUZ LUIS ALBERTO ANTONIO RAMOS ADDRESS REDACTED PETROROCK ENERGY LLC ELICIER PALACIOS 4615 CENTER BLVD., STE 1108 NEW YORK NY 11109 PETROTEC OFFSHORE LTDA NEEMIAS ADOLFO DE COSTS RUA DA IGUALDADE N 754 LOJA 2 MACAE RJ 27913140 BRAZIL PETROTOOLS MEXICO SA DE CV CP ADARA QUINTANA CALLE FRANCISCO I MADERO NO. 1112 VERACRUZ 96410 MEXICO PG FLOW SOLUTIONS HAKON TORSVIK PO BOX 154 NESBRU 1378 NORWAY PHAROS MARINE AUTOMATIC POWER DONNA THOMAS 10810 WEST LITTLE YORK RD SUITE 130 HOUSTON TX 77041 PHILADELPHIA INDEMNITY INSURANCE COMPANY JAYN GROVE PO BOX 2057 KALISPELL MT 59901 PHILADELPHIA INSURANCE COMPANIES ONE BALA PLAZA, SUITE 100 BALA CYNWYD PA 19004 PHILADELPHIA MIXING SOLUTIONS GREG GILLIGAN 1221 EAST MAIN STREET PALMYRA PA 17078 PHILLIPS 66 COMPANY ATTN: BRANDI C SABLATURA PHILLIPS 66 OPERATIONS CENTER 1075 W SAM HOUSTON PARKWAY N SUITE 200 HOUSTON TX 77042 PHILLIPS 66 COMPANY DAN FISCHMAN & BRANDI SABLATURA 2331 CITY WEST BLVD. HOUSTON TX 77042 PHILLIPS 66 OPERATIONS PHILLIPS 66 COMPANY DANIEL S. FISCHMAN 1075 W. SAM HOUSTON PARKWAY N. SUITE 200 CENTER HOUSTON TX 77042 PHILLIPS 66 OPERATIONS PHILLIPS 66 COMPANY STEVE BELIN & BRANDI SABLATURA 1075 W. SAM HOUSTON PARKWAY N. SUITE 200 CENTER HOUSTON TX 77042 PHILLIPS, CHRISTOPHER BOYD ADDRESS REDACTED PHILLIPS, ROBERT NATHANIEL ADDRESS REDACTED ATTN: CHRISTOPHER WILKOS / JOHN PHL VARIABLE INSURANCE COMPANY C/O NASSAU ASSET MANAGEMENT LLC ROTH 1 AMERICAN ROW - H12 HARTFORD CT 06102 PHOENIX INTERNATIONAL HOLDINGS CINDY SHOCK 9301 LARGO DRIVE WEST LARGO MD 20774 PHYSICAL THERAPY CENTER OF OS DOUGLAS ROLL 900 HOLCOMB BLVD SUITE A OCEAN SPRINGS MS 39564-3903 PHYSICAL THERAPY SPECIALISTS LANAE DANOS 13869 WEST MAIN ST LAROSE LA 70373 PHYSICIAN PRACTICE PARTNERS TAMEL BRIDGES DEPT 3718 PO BOX 123718 DALLAS TX 75312-3718 PHYSICIANS ANESTHESIA SERVICE 1229 MADISON ST SUITE 1440 SEATTLE WA 98104 PHYSICIANS IMMUNODIAGOSTIC KATHERINE 512 S. VERDUGO DRIVE BURBANK CA 91502

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 52 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 55 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country PHYSICIANS MEDICAL CENTER TAMMY B. PO BOX 5041 HOUMA LA 70361-5041 PI MIDLANTIC TRISHA BUCHANAN 105 EASTERN AVENUE STE 105 ANNAPOLIS MD 21403 PICCIOLA & ASSOCIATES TALLY LAFONT PO BOX 687 CUT OFF LA 70345 PICKETT, MCLEAN JOSEPH ADDRESS REDACTED PIEDRA OLMEDO, ANDRES ADDRESS REDACTED PIGOTT, JOEY S ADDRESS REDACTED PIGOTT, PHILLIP B ADDRESS REDACTED PILGRIM, DAVID MITCHELL ADDRESS REDACTED PINCKNEY, JESSE LAMONT ADDRESS REDACTED PINGOMEC COMERCIO E SERVICOS LUIS CLAUDIO NICHELLI RUA VIEIRA FAZENDA 961 VILA SA SEBASTIAO DUQUE DE CAXIAS RIO DE JANEIRO RJ 25056 010 BRAZIL PINTO GUILLEN, MARCO ANTONIO ADDRESS REDACTED PINTO, TALITA MARINHO ADDRESS REDACTED PIPER, KORY JACOB ADDRESS REDACTED PIRANI AND ASSOCIATES LTDA MARCO RUA VISCONDE DE PIRAJA 303 SL 711 IPANEMA RIO DE JANEIRO RJ 22410-001 BRAZIL PITRE, DANNY RAY ADDRESS REDACTED PITRE, DARREN JOSEPH ADDRESS REDACTED PITRE, RYAN S ADDRESS REDACTED PITRE, SCOTT A ADDRESS REDACTED PITTS, CHAD R ADDRESS REDACTED PITZL, CORY JOSEPH ADDRESS REDACTED PIVOT PHYSICAL THERAPY KATLYN SHAW PO BOX 69020 BALTIMORE MD 21264 PIZANI, ASTRID MORA ADDRESS REDACTED PJT PARTNERS LP MIKE GENEREUX 280 PARK AVENUE NEW YORK NY 10017 PLANT DESIGN SOLUTIONS LEN KALMER - SUA RECIPIENT 12777 JONES ROAD STE 112 HOUSTON TX 77070 PLANUS CONTABILIDADE GERENCIAL RAYSSA ROCHA AV RIO BRANCO 43 20 ANDAR CENTRO RIO DE JANEIRO RJ 20090003 BRAZIL PLAZA-VALDES, CARLOS J ADDRESS REDACTED PLOCHARCZYK, MICHAEL JEFFREY ADDRESS REDACTED PLUMMER, ROBERT C ADDRESS REDACTED PMEX COMUNICACAO CORP ROBLEDO CANCADO TONELLI AV BRIG FARIA LIMA 1826 CJ 606 SAO PAULO 01451-908 BRAZIL PMP 2005 SOLUCOES EM AUTOMACAO AMERICO COITE ESTRADA DE JACAREPAGUA 7655 SALA 525 RIO DE JANEIRO RJ BRAZIL PNC BANK NATIONAL ASSOCIATION HSA SPENDING ACCOUNT 300 FIFTH AVENUE PITTSBURGH PA 15222 PNEUMATIC AND HYDRAULICS SHERIE HULIN - SUA RECIPIENT 129 DEMANADE BLVD LAFAYETTE LA 70503 PNEUMATIC SPECIALTIES LLC POLLY PELTIER - SUA RECIPIENT 829 SAADI STREET HOUMA LA 70363 POE, JOHN E ADDRESS REDACTED POINT EIGHT POWER INC CORIE CHATELAIN -SUA RECIPIENT 1518 ENGINEERS ROAD BELLE CHASSE LA 70037 POIST, ASHTON ROBERT TAYLOR ADDRESS REDACTED POLAR COMPONENTES E SISTEMAS WALLACE ANDRE AVENIDA NOSSA SENHORA DA GLORI 1395 CAVALEIROS MACAE RJ 27920-360 BRAZIL CUAUHTEMO CIUDAD DE POLARCUS MEXICO SA DE CV SURENDRA KADAM AVENIDA PASEO DE LA REFORMA NO 295 PISO 10 COL C MEXICO DF 6500 MEXICO POZNAN, WEILKOPOS POLARIS LABORATORIES EUROPE LISA BANDY POLARIS LABORATORIES EUROPE UL RUBIEZ 46H KIE 61-612 POLAND POLARIS LABORATORIES LLC LINSEY GOODIN PO BOX 6457 DEPT #278 INDIANAPOLIS IN 46206 POLARIS LABORATORIES, LLC JEFFREY WHITE 7451 WINTON DRIVE INDIANAPOLIS IN 46268 POLYCLINIC RICCI BROWN 1145 BROADWAY SEATTLE WA 98122 POMBO, BRUNO CARIOCA ADDRESS REDACTED POMPEO, JOSEPH NUNZI ADDRESS REDACTED PONCE, GAVIN R ADDRESS REDACTED PONS, SAMUEL H ADDRESS REDACTED PONTCHARTRAIN SURGERY CENTER SUSAN KRUPICKI 4407 HWY 190 SERVICE ROAD E SUITE 200 COVINGTON LA 70433-4957 POPHAM, HARRISON PHILLIP ADDRESS REDACTED POPP, TIM J ADDRESS REDACTED FORT PORT EVERGLADES PILOTS ASSOC LAURA HARVEY PO BOX 13017 LAUDERDALE FL 33316 PORT OF CORPUS CHRISTI AUTH. PO BOX 1541 CORPUS CHRISTI TX 78403 PORT OF GREATER BATON ROUGE MADELAN DAY PO BOX 380 PORT ALLEN LA 70767 PORT OF HOUSTON AUTHORITY KATHY SWIFT PO BOX 95279 GRAPEVINE TX 76099-9752 PORT OF NEW ORLEANS SHEKEVA PREVOST PO BOX 60046 NEW ORLEANS LA 70160 PORT OF PORT ANGELES DEBBIE ROEBUCK PO BOX 1350 PORT ANGELES WA 98362 PORT OF SOUTH LOUISIANA LORI WARNER 171 BELLE TERRE LAPLACE LA 70084 PORT SHIP SERVICE INC. DENNIS BAKEMEYER PO BOX 369 ARABI LA 70032 TORRE II, PORTAFOLIO DE INVERSIONES PDEI, FONDO C/O PORTAFOLIO DE INVERSIONES PDEI, FONDO ATTN: MANUEL ALFREDO RIVERA DIAGONAL 6 10-01 ZONA 10 CENTRO NIVEL 11 CIUDAD DE BURSATIL EN USD BURSATIL EN USD GALLARDO / CARLOS E RIVERA J GERENCIAL LAS MARGARITAS OFIC 1102 GUATEMALA GUATEMALA PORTAGE POINT PARTNERS LLC MATTHEW RAY 300 N LASALLE SUITE 1420 CHICAGO IL 60654 PORTELLA CABOS DE ACO MARIO AURELIO RUA ANDIRA 96 OLARIA RIO DE JANEIRO RJ 21031-450 BRAZIL PORTELLA FORNECEDORA DA INDUST MARCO POLO RUA MARIA RODRIGUES 176 OLARIA RIO DE JANIERO RJ 21031-490 BRAZIL PORTERFIELD, GARY M ADDRESS REDACTED PORTS AMERICA BATON ROUGE MARY BETH REILING PO BOX 2476 CAROL STREAM IL 60132-2476 PORTSMOUTH PILOTS INC. RICHARD HOLT 34 CERES ST PORTSMOUTH NH 03801-3706

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 53 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 56 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country PORTVISION SALLIE HOLLARD PO BOX 731943 DALLAS TX 75373-1943 POSEY, JONATHAN R ADDRESS REDACTED POSTLETHWAITE & NETTERVILLE PHYLLIS SMITH-BOOKKEEPER 8550 UNITED PLAZA BLVD SUITE 1001 BATON ROUGE LA 70809 POWE, NICHOLE R. ADDRESS REDACTED POWELL, DIABOLIQUE LEON ADDRESS REDACTED POWELL, ERIC LEE ADDRESS REDACTED POWELL, MARK DEAN ADDRESS REDACTED POWER PANELS CASIE FREIA - SUA RECIPIENT PO BOX 508 MORGAN CITY LA 70381 POWER SOLUTIONS EQUIPAMENTOS ANA PAULA RUA FONSECA TELES 184 SAO CRISTOVAO RIO DE JANEIRO RJ 20.940-200 BRAZIL POWER SPECIALTIES LLC BRENDA RATCLIFF 325 CHENNAULT ST. MORGAN CITY LA 70381 POWER SYSTEMS SPECIALISTS, INC CINDY BRAQUET 2064 BONN STREET HARVEY LA 70058 POWERSTRIDE BATTERY COMPANY BEVERLY PELERINE-SUA RECIPIENT 3486 KURTZ STREET SUITE 101 SAN DIEGO CA 92110 PPS COMMERCIAL UNLIMITED LLC JAYNIE MEULLER 701 PAPWORTH AVE ST 103 METAIRIE LA 70005 PRADO MARTINEZ, JULIO CESAR ADDRESS REDACTED PRATER, RICHARD ALLEN ADDRESS REDACTED PRECIADO MORALES, GERMAN ANTONIO ADDRESS REDACTED RUA AFONSO CALVACANTI, NO 455 ST PREFEITURA DA CIDADE DO RIO DE JANEIRO SEBASTAIN ADM CTR NEW TOWN RJ RJ BRAZIL PREFEITURA MUNICIPAL DE NITEROI RUA VISCONDE DE SEPETIBA 987 RIO DE JANEIRO RJ 24020-206 BRAZIL PREFEITURA NITEROI RUA VISCONDE DE SEPETIBA 987 RIO DE JANEIRO RJ 24020206 BRAZIL PREFEITURA RIO DE JANEIRO RUA AFONSO CALVACANTI NO 455 ST SEBASTAIN ADM CTR NEW TOWN RJ RJ BRAZIL PREFERRED ANATOMIC PATHOLOGY DAWN PO BOX 52087 LAFAYETTE LA 70505-2087 PREIS PLC JOHN L. ROBERT, III P.O. DRAWER 94-C LAFAYETTE LA 70509 BRITISH PREMIER CLOUD HELPLINE RYAN BRADY 207-3375 WHITTIER AVE COLUMBIA V8Z3R1 CANADA PREMIER EQUIPMENT CORP INC DEBBIE MIRE PO BOX 15203 BATON ROUGE LA 70895 PREMIER OFFSHORE CATERING BRENNAN DUTHU PO BOX 1420 GRAY LA 70359 CEP042180 PREMIERE SOLUTIONS EQUIPAMENTO CLOVIS ROBERTO FINOTI RUA ARROIO HONDO 36 SALA 01 IPIRANGA SAO PAULO SP 2BRAZIL PREMIUM REFRIGERATION SERVICES JUAN TORRES 62208 RAYMOND ROAD BIG BRANCH LA 70445 PRENDERGAST, DONALD L ADDRESS REDACTED PREVENT FISIOTERAPIA LUCIA MESSIAS RUA OITO DE MARCO 319 CASA 05 COSTA DO SOL MACAE RJ 27923340 BRAZIL PREVIDENCIA SOCIAL C/O KNTS RUA LAURO MULLER 116 SAL 503 BOTAFOGO RJ 22290 BRAZIL PRICE, RALPH LEE ADDRESS REDACTED PRICEWATERHOUSECOOPERS LLP CHELSEA DANIELS HENDRICKSON PO BOX 7247-6406 PHILADELPHIA PA 19170-6406 PRIETO MARTINEZ, PERVIS ADDRESS REDACTED PRIM, RICKEY ADDRESS REDACTED PRIMA, HEATHER P ADDRESS REDACTED PRIME COATINGS LLC DANA SORENSON PO BOX 1223 AMELIA LA 70340 PRIME SOLUCOES TECNOLOGICAS CARLOS RAINHO RUA VOLUNTARIOS DA PATRIA RIO DE JANEIRO RJ 22270000 BRAZIL PRINCESS ANNE AMBULATORY SURG DENISE FOHL PO BOX 3802 HAMPTON VA 23663 PRINE, NICOLAS R ADDRESS REDACTED PRO MAQUINAS DE MACAE EQUIP JESSICA AVA GUADALARJARA 1284 PRAIA CAMPISTA MACAE 27923220 BRAZIL PRO TECH INTEGRATED SERVICES TANYA BACON REPUBLIC BUSINESS CREDIT LLC PO BOX 203152 DALLAS TX 75320-3152 PROBST, DAVID ALEXANDER ADDRESS REDACTED PROCARE TRANSPORTATION JESSICA JOYNER 410 EISENHOWER BLVD STE C-2 TAMPA FL 33634 PROCEANIC LTD PATTI DUNN 712 MAIN STREET SUITE 2150 HOUSTON TX 77002 PRODUCE SERVICES AND LOGISTICS JAN CRAWFORD 1039 VALLEY AVE NW PUYALLUP WA 98371 COL BENITO PRODUCTOS Y SERVICIOS PROSURES MARIA ELENA LEYVA MARTINEZ CALLE 17A 167A ENTRE PERIFERICA Y 13 DE MAYO JUAREZ CM 24120 MEXICO LAGUNA DEL CARMEN PROESA ELECTRONICA SA DE CV JUAN JOSE HERNANDEZ AV 4 OTE POR 2 SUR PARQUE INDUSTRIAL PESQ AZUL CAMP 14140 MEXICO PROF. LANDMEN'S ASSOC. OF NO MARGO CAMERON PO BOX 51123 NEW ORLEANS LA 70151-1123 PROFESSIONAL RECRUITING LLC JENNIFER CEDRO 27 BERESFORD DRIVE METAIRIE LA 70001 PROFESSIONAL SHORTHAND REPORT 601 POYDRAS STREET SUITE 1615 NEW ORLEANS LA 70130 PROFICIENT LANGUAGE TEACHING MARTHA C LADY 22077 7TH ST ABITA SPRINGS LA 70420 PROFIT-ON-HOLD JULIE JIMENEZ 1710 ORLEANS STREET MANDEVILLE LA 70448-3951 PROLIANCE SURGEONS INC. ANITA 10330 MERIDIAN AVE. N. STE 250 SEATTLE WA 98133 PROMENADE APART HOTEIS LTDA DANIELA MILAO RUA TEOFILO OTONI 15 4 ANDAR CENTRO RJ 20.090-080 BRAZIL COL CIUDAD DEL PROMOTORA AMBIENTAL DE LA LAGU SAMANTHA MARTINEZ CARRETERA CARMEN PURETO REAL KM 19.8 LIMONAR CARMEN CA 24180 MEXICO PROPUL SERVICE LTDA CLAUDIA HILLER RUA MARIO TRILHA 25 ILHA DA CONCEICAO NITEROI RJ 24050-170 BRAZIL PROQUIRE LLC CATHY MICHONET PO BOX 70071 CHICAGO IL 60673 PROSKAUER ROSE LLP PATRICK MARSHALL 11 TIMES SQUARE NEW YORK NY 10036 PROTECTIVE PACKAGING CORP ANGELA YANTES - SUA RECIPIENT 1746 W CROSBY ROAD #108 CARROLLTON TX 75254 PROTECTOSEAL COMPANY LORI CUMMINGS 225 W FOSTER AVE BENSENVILLE IL 60106 PROVIDENCE HOSPITAL PO BOX 538081 ATLANTA GA 30353-8081 PROVISIONS ENERGY AND MARINE HAILEY LATIOLAIS PO BOX 516 BROUSSARD LA 70518 PRUITT, SHUAN LAMAR ADDRESS REDACTED PSC INDUSTRIAL OUTSOURCING LP HEATHER HUGES PO BOX 3070 HOUSTON TX 77253-3070

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 54 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 57 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country PUCKETT MACHINERY COMPANY SETH HESTER PO BOX 321033 FLOWOOD MS 39232 PUGET SOUND PILOTS STEPHANIE TERRIQUEZ PO BOX 952442 ST. LOUIS MO 63195-2442 PUGH ACCARDO HAAS RADECKER EMMET LAJEUNIE JR 1100 POYDRAS STREET SUITE 3300 NEW ORLEANS LA 70163 PULIDO DAZA, PEDRO MANUEL ADDRESS REDACTED PULMONARY ASSOCIATES WYNETTE GRIFFIN 2702 WHISPERWOOD LN PANAMA CITY FL 32405-4485 PULSE TECH PRODUCTS CORP TOM BRANSFORD 1100 S KIMBALL AVE SOUTHLAKE TX 76092 PUMP EQUIPMENT INC CATHY MEYERS - SUA RECIPIENT 935 HWY 11 SOUTH PICAYUNE MS 39466 PUMP SYSTEMS LLC JOAN BAUM - SUA RECIPIENT PO BOX 23814 HARAHAN LA 70183-0814 PUMPING SOLUTIONS INC ACCOUNTS RECEIVABLE - SUA 1906 S QUAKER RIDGE PL ONTARIO CA 91761 PUSATERI JOHNSTON GUILLIOT 1100 POYDRAS STREET SUITE 2250 NEW ORLEANS LA 70163 QBE SPECIALTY INSURANCE COMPANY WALL STREET PLAZA 88 PINE STREET NEW YORK NY 10005 Q-SEA CORP NICOLE SEAL 1500 4TH STREET SUITE A HARVEY LA 70058 QUADIENT LEASING USA INC PO BOX 123682 DALLAS TX 75312-3682 QUADREM NETHERLANDS BV AUDREY HERRERA PO BOX 974062 DALLAS TX 75397-4062 QUAIDOO, ERIC ATTA ADDRESS REDACTED INDUSTRIAL TRINIDAD & QUALITECH MACHINING SERVICES JASON BADREE AMAZON DRIVE POINT LISAS ESTATE TOBAGO QUALITY CONSTRUCTION AND PROD P VIATOR - SUA 425 GRIFFIN RD YOUNGSVILLE LA 70592 QUALITY MARITIME TRAINING, LLC JANICE TROWBRIDGE 8601 4TH STREET NORTH #209 ST. PETERSBURG FL 33702 QUALITY REFRIGERATION CO INC STEPHANIE QUINTERO PO BOX 367 WILMINGTON CA 90748 QUANTUM HOSPITAL PATHOLOGY LLC 5927 SW 70TH STREET #439031 SOUTH MIAMI FL 33243-7023 QUANTUM STABILIZERS, INC. SYLVIA ZAMBRANO 3685 SW 30TH AVE FT LAUDERDALE FL 33312 QUARTERMAN, FRANK E ADDRESS REDACTED QUEB SOBRINO, IVAN ADDRESS REDACTED QUEIROZ, CECILIA BOBANY DE ADDRESS REDACTED QUEIROZ, LEONARDO DOS SANTOS ADDRESS REDACTED QUEST CONSTRUCTION EQUIP. LLC. MIKE SAPULDING -SUA RECIPIENT PO BOX 417 ST. ROSE LA 70087 QUEST DIAGNOSTICS PO BOX 822557 PHILADELPHIA PA 19182 QUEVEDO VIZCARRA, GABINO ANTONIO ADDRESS REDACTED QUIJANO CEBALLOS, THALIA RENEE ADDRESS REDACTED QUINONEZ ARAMBURO, EVELYN TOMASA ADDRESS REDACTED QUINTANA, ALLAN ADDRESS REDACTED QUINTERO CALDERON, ROLANDO ADDRESS REDACTED QUIROZ CAMPOS, HARLEY D ADDRESS REDACTED QUIROZ GUERRA, DAVID ERNESTO ADDRESS REDACTED QUIROZ LOPEZ, RUBEN HILARIO ADDRESS REDACTED R AND L CARRIERS TRESA CARMEN - SUA RECIPIENT PO BOX 10020 PORT WILLIAM OH 45164-2000 TRINIDAD & R DABIE ELECTRICAL CONTRACTORS REYNOLD DABIE #38 SUNFLOWER CRESCENT SERENITY HEIGHTS TOBAGO R FRANCISCO EUGENIO 268, 901, SÃO CRISTÓVÃO RIO DE JANEIRO CEP 20.941-120 BRAZIL R W DAVIS OIL EMILY MYERS PAYNE 4383 LILBURN INDUSTRIAL WAY LILBURN GA 30047 R W FERNSTRUM & CO INC MARY WHITE PO BOX 97 MENOMINEE MI 49858 R. CLYDE PARKER JR. ADDRESS REDACTED RAACI INC MAUREEN FERACI 525 ELMWOOD PARK BLVD NEW ORLEANS LA 70123 RABANALES ALEJANDRO, BALDEMAR ADDRESS REDACTED RABELO MARRUJO, BRIAN IVAN ADDRESS REDACTED RABITO, JORDAN J ADDRESS REDACTED RACE EQUIPMENT REPAIR INC ALEC RACE PO BOX 3130 MORGAN CITY LA 70381 RACINE, ROBERT HARRISON ADDRESS REDACTED RADIA BRIANNA HARRIS PO BOX 24649 SEATTLE WA 98124-0649 RADIATOR SERVICE COMPANY, INC. JEANNE BIENVENU 8403 PARK AVENUE HOUMA LA 70363 RADIO HOLLAND USA INC FELIX CRUZ PO BOX 973893 DALLAS TX 75397 RADIOLOGY & INTERVENTIONAL ASSOC. OF METAIRIE PO BOX 8090 METAIRIE LA 70011-8090 RADIOLOGY ASSOC OF PENSACOLA PO BOX 622047 ORLANDO FL 32862 RADIOLOGY MEDICAL GROUP INC APRIL DAVIS 1801 W OLYMPIC BLVD PASADENA CA 91199-1315 RADIOMAR ELETRONICA NAVAL LTDA MARCUS BALBI RUA CONDE DE LAGES 44 SALA 1203 RIO DE JANEIRO RJ 20241-080 BRAZIL RADTKE, PAUL RAYMOND ADDRESS REDACTED RAINES, JOSEPH MATTHEW ADDRESS REDACTED RAL FORENSICS LLC RALPH LITOLFF 2637 EDENBORN AVENUE SUITE 305 METAIRIE LA 70002 RALEIGH A SMITH MD SARAH 1663 W WHEELER AVENUE ARANSAS PASS TX 78336 RALPH BOURGEOIS M.D., APMC SADIE BONVILLAIN 855 BELANGER ST. SUITE 107 HOUMA LA 70360 RAMAGOS, MICHAEL K ADDRESS REDACTED RAMBARRAN, RAMESH DAVID ADDRESS REDACTED RAMESAR, BARRY DARREN ADDRESS REDACTED RAMIREZ AGUILAR, JULIO CESAR ADDRESS REDACTED RAMIREZ CARBALLO, DOMINGO JOSE ADDRESS REDACTED RAMIREZ GARCIA, ALVARO ADDRESS REDACTED RAMIREZ GARCIA, EDGAR ABRAHAM ADDRESS REDACTED RAMIREZ HERNANDEZ, JOSE JESUS ADDRESS REDACTED RAMIREZ ZETINA, RODOLFO ADDRESS REDACTED

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country RAMON ALBERTO CANEPA REBOLLEDO CANDELRIO REBOLLEDO HERNANDEZ ADDRESS REDACTED RAMOS VELARDE, CARLOS ANDRES ADDRESS REDACTED RAMOS, ALEX FABIANO SILVA ADDRESS REDACTED RAMOS, ROBERT C ADDRESS REDACTED RAMPERSAUD, TIMOTHY STEPHEN ADDRESS REDACTED PORT OF TRINIDAD & RAMPS LOGISTICS LIMITED NEIL RAMROOP #33 METHUEN STREET WOODBROOK SPAIN TRINIDAD TOBAGO RAMSAY MARINE INC 309 LA RUE FRANCE SUITE 101 LAFAYETTE LA 70508 RAMSEY, MICHAEL H ADDRESS REDACTED RAMTEC MARINE SYSTEMS RITA WALTHAUS 373 COLUMBIA MEMORIAL PARKWAY KEMAH TX 77565 RANGEL LUB COMERCIO E SERVICOS RIVERTON RIBEIRO AV CARLOS AUGUSTO TINOCO GARCIA, 303 RIVIERA MACAE RJ 27937-590 BRAZIL RAPID URGENT CARE BONNIE BARDY - SUA RECIPIENT 1111 NORTH CAUSEWAY BLVD MANDEVILLE LA 70471 RAPP MARINE NW LLC LAYLA PINEDA - SUA RECIPIENT 2260 W COMMODORE WAY SEATTLE WA 98199 UNITED RAPTOR SUPPLIES LIMITED FAISAL RIAZ 6 HESSEL ROAD LONDON W13 9ES KINGDOM RASMUSSEN ENERGY ADVISORS JANET RASMUSSEN POST OFFICE BOX 1043 MIDLOTHIAN VA 23113 RASMUSSEN EQUIPMENT COMPANY DEBBIE LEON-GUERRERO PO BOX 473 BEDFORD PARK IL 60499-0473 RATTLEFF, BRYAN J ADDRESS REDACTED RAYMOND L HENRY RAYMOND HENRY ADDRESS REDACTED RAYMOND, KATRINA LOUISE ADDRESS REDACTED RAYMOND, KIRK D ADDRESS REDACTED RCL MANGUEIRAS E CONEXOES LTDA RAFAEL CABRAL ESTRADA VIRGEM SANTA 400 MACAE RJ 27948-000 BRAZIL REBOLLEDO GUILLEN, ESTEBAN ADDRESS REDACTED RECTIFICACIONES PARAISO LIC RENE LIGONIO LEON NICOLAS BRAVO S/N PARAISO TABASCO 86600 MEXICO RED FOX ENVIRONMENTAL SERVICES SHANTEL VENABLE 1513 B CHEMIN AGREABLE RD YOUNGSVILLE LA 70592 REDAELLI WIRE ROPES ALBERTO COLOMBO VIA A VOLTA 16 COLOGNO MONZESE MILANO 20093 ITALY REDFISH RENTALS INC WANDA DUPLANTIS - SUA RECIPIEN PO BOX 844541 BOSTON MA 02284-4541 REED, WESLEY ALAN ADDRESS REDACTED REES, TERRI A ADDRESS REDACTED REEVES, JARED D ADDRESS REDACTED REFINITIV ANTHONY MONZO PO BOX 415983 BOSTON MA 02241 REGIONAL MEDICAL CENTER OF REG MED CTR OF BAYONET POINT PO BOX 402817 ATLANTA GA 30384-2817 REGIONAL RADIOLOGY, LLC JENNIFER OTTO PO BOX 2189 CHALMETTE LA 70044 REGIONS BANK CARSON STRICKLAND 201 MILAN PKWY 1ST FLOOR BIRMINGHAM AL 35211 REGO, TATIANA CORREA ADDRESS REDACTED REHAB DYNAMICS INC. JULIANNA MABEE 476 FALCONER DR COVINGTON LA 70433 REICKS, JOSHUA WILLIAM ADDRESS REDACTED REID, DEMETRIUS LAVON ADDRESS REDACTED REIDL, RICKY RAY ADDRESS REDACTED REILLY, TERRY L. ADDRESS REDACTED RELYON NUTEC BRASIL BRUNO THOMAZ AV PREF ARISTEU FERREIRA DA SILVA 1277 NOVO CAVALEIRO MACAE RJ 27930 070 BRAZIL RELYON NUTEC DE MEXICO MONICA ASCENSIO AV CENTRAL PONIENTE S/N PUERTO PESQUERO, CD CARMEN CAMPECHE 24129 MEXICO RELYON NUTEC USA LLC MARY CAMARDELLE-SUA RECIPIENT 209 CLENDENNING ROAD HOUMA LA 70363 RELYON NUTEC USA, LLC JAROD RICHARD 209 CLENDENNING ROAD HOUMA LA 70363 REMES DIAZ, DANIEL ADDRESS REDACTED REMOTE MONITORING PHYSICIANS SHRETHA JENNINGS DEPARTMENT 2105 PO BOX 11407 BIRMINGHAM AL 35246-2105 REMOTEMD MEDICAL SERVICES LLC LISA JONES - SUA RECIPIENT 880 WEST COMMERCE ROAD SUITE 101 NEW ORLEANS LA 70123 RENAN CORDOVA MAGANA LORENA DEL CARMEN SANCHEZ ADDRESS REDACTED RENTERIA VALENCIA, AURELIO ADDRESS REDACTED TRINIDAD & REPUBLIC BANK LIMITED #58-60 TRAGARETE ROAD NEWTOWN PORT OF SPAIN TOBAGO REPUBLIC SERVICES INC TANDA RICHARD-SUA RECIPIENT PO BOX 9001099 REPUBLIC SERVICES # 842 LOUISVILLE KY 40290-1099 RES ENERGY SOLUTIONS SHANNON DOYLE - SUA RECIPIENT PO BOX 848545 DALLAS TX 75284-8545 RESIDENCE INN COVINGTON CARAMEL FAIRLEY PO BOX 741574 ATLANTA GA 30374 RESOLVE MARINE GROUP PETER EBBUTT 1510 SE 17TH STREET STE 400 FT LAUDERDALE FL 33316 RESTREPO ECHEVERRI, JULIO CESAR ADDRESS REDACTED RESTREPO RESTREPO, SEBASTIAN ADDRESS REDACTED RESULTS CASE MANAGEMENT LLC PO BOX 5324 SUFFOLK VA 23435-0324 RETIF OIL AND FUEL LLC BOB GAUDET DEPT 2000 PO BOX 62600 NEW ORLEANS LA 70162 2600 RETINA CENTER NW PLLC 9800 LEVIN ROAD NW SUITE 203 SILVERDALE WA 98383 CIUDAD DEL REVEN HEAVY SERVICES SA DE CV MARCO GUERRERO AGUILAR CALLE CIRICOTE NO 25-A COLONIA MIAMI CARMEN CM 24115 MEXICO DUQUE DE REVITEC DE CAXIAS EQUIPAMENTOS VIVIANE RIBIERO AV FRAZENDINHA DE RECREIO 70 QD 01 LOTE 03 BAIRRO CHACARAS PETROPOLIS CAXIAS RJ 21011620 BRAZIL REYES JARA, PEDRO ADDRESS REDACTED REYES SALVADOR HERNANDEZ REYES SALVADOR HERNANDEZ ADDRESS REDACTED REYES, SAMUEL ADDRESS REDACTED REYNA ELIZABETH MARTINEZ RODRIGUEZ JOSE MANUEL BARAHONA RASCON ADDRESS REDACTED REYNA GARCIA, BALTAZAR ADDRESS REDACTED REYNA RAMIREZ, ULISES OSIRIS ADDRESS REDACTED

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 56 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 59 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country RHDNS OUTSOURCING DO BRASIL ANA PAULA CAROTTI AV AYRTON SENNA, 3000, BL 2, SALAS 311 E RIO DE JANEIRO RJ 22775-001 BRAZIL RHODES, DALE QUENTIN ADDRESS REDACTED RHODES, DANIEL J ADDRESS REDACTED RHONDA A LORRAINE DDS LLC RHONDA LORRAINE 14666 WEST MAIN STREET CUT OFF LA 70345 RIBEIRO MOREIRA, VICTOR ADDRESS REDACTED RICE ELECTRONICS L.P. DEETRA MILLER - SUA RECIPIENT 8935 ALMEDA GENOA HOUSTON TX 77075 RICHARD HAYNES MARITIME CON RICK HAYNES 10849 BEVERLY GLEN AVENUE BOYNTON BEACH FL 33473 RICHARD, CAINE ROBERT ADDRESS REDACTED RICHARD, GLENN T. ADDRESS REDACTED RICHARD, STEVE JOSEPH ADDRESS REDACTED RICHARD'S RESTAURANT SUPP BRIAN P.O. DRAWER 4035 HOUMA LA 70361 RICHARDSON, ALEXANDER L. ADDRESS REDACTED RICHARDSON, JAMEEL ADDRESS REDACTED RICHARDSON, PATRICK BENJAMIN ADDRESS REDACTED RICHARDSON, PAUL E ADDRESS REDACTED RICHARDSON, REID KENNETH ADDRESS REDACTED RICHARDSON, SEAN CORRY ADDRESS REDACTED RICHTERS, KEVIN LYNCH ADDRESS REDACTED RIDDICK, JAMES W ADDRESS REDACTED RIDER, DANIELLE RENEE ADDRESS REDACTED RIGOBERTO RODRIGUEZ ISLAS RIGOBERTO RODRIGUEZ ISLAS ADDRESS REDACTED RIMANDO, SHERWIN B ADDRESS REDACTED RING POWER CORPORATION VICKI LYNN WOOD 10421 FERN HILL DRIVE RIVERVIEW FL 33578 RING POWER, INC SONYA WHITE PO BOX 935004 ATLANTA GA 31193-5004 RIO SUL REPROGRAFIA LTDA FABIANA AVENIDA DAS AMERICAS J00 B6 08 SALA 208 RIO DE JANEIRO RJ 22640-100 BRAZIL RIOS BRIONES, CARLOS ALBERTO ADDRESS REDACTED RIOS VALENZUELA, HUGO DAVID ADDRESS REDACTED RIPPEY, NATHAN A ADDRESS REDACTED RISA TECH INC GAIL REYNOLDS 26632 TOWNE CENTRE DRIVE SUITE 210 FOOTHILL RANCH CA 92610 RISHER FITNESS EQUIPMENT RANDY RISHER 7902 WESTWOOD DRIVE HOUSTON TX 77055 RISOUL Y CIA SA DE CV WENDY AGUILAR AV SENDERO DIVISORIO #400 COL RESIDENCIAL CASA BELLA SAN NICOLAS NL 66428 MEXICO RIVER SERVICES INC STEPHEN LYONS 2827 RIVER DRIVE THUNDERBOLT GA 31404 RIVERA GONZALEZ, VICTOR MANUEL ADDRESS REDACTED RIVERA HERNANDEZ, RODOLFO REY ALI ADDRESS REDACTED RIVERA MELENDEZ, JUAN C. ADDRESS REDACTED RIVERA SANDOVAL, GABRIEL IVAN ADDRESS REDACTED RIVERA, FELIX ADDRESS REDACTED RIVERS AND GULF MARINE SURVEY ANDREW MINSTER PO BOX 869 SLIDELL LA 70459 RIVERSIDE CARDIOVASCULAR CTR FLORRIE RIVERSIDE CARDIO CTR OF HAM RD PO BOX 6017 NEWPORT NEWS VA 23606-6017 RIVERSIDE MEDICAL CENTER STACEY MCGRAW 1900 MAIN STREET FRANKLINTON LA 70438 UNITED RIVERTRACE ENGINEERING LTD. JESSICA MARTIN UNIT P, KINGSFIELD BUSINESS CENTER, PHILANTHROPIC RD. REDHILL, SURREY UK RH1 4DP KINGDOM RIVERWEST PHYSICAL THERAPY ACCOUNTS RECEIVABLE 4920 CYPRESS ST. UNITS C & D WEST MONROE LA 71291 RJ TECNOLOGIA E TELECOM BRUNO OLIVEIRA RUA FERNANDA 2297 SANTA CRUZ RIO DE JANEIRO RJ 23520 191 BRAZIL ROBBINS, JOSHUA WILLIAM ADDRESS REDACTED ROBBINS, THOMAS EARL ADDRESS REDACTED ROBELLO, RYNE BRYANT KAMANAKUPONO ADDRESS REDACTED ROBERSON, AMBER LYNN ADDRESS REDACTED ROBERT H. WAGER CO. INC. LORETTA DAVIS/DEBORAH CAMPBELL PO BOX 75004 CHICAGO IL 60675-5004 ROBERTS, DAVID A. ADDRESS REDACTED ROBERTSON, JON R ADDRESS REDACTED ROBINSON, ANTHONY D ADDRESS REDACTED ROBINSON, CARL WENDELL ADDRESS REDACTED ROBINSON, DANTE JAMAR ADDRESS REDACTED ROBINSON, ROSS C ADDRESS REDACTED ROBINSON, WALTER J ADDRESS REDACTED ROBSON FORENSIC INC LINDA LEWIS 354 NORTH PRINCE STREET LANCASTER PA 17603 ROCHA FILHO, PAULO JESUS DA ADDRESS REDACTED ROCHA, MARCELO RODRIGUES ADDRESS REDACTED ROCHAMAR AGENCIA MARITIMA S/A ICARO COSTA - CHS ASSESS EMPRE RUA DO COMERCIO 55 CONJUNTOS 41/42/43 CENTRO SANTOS RIO DE JANEIRO RJ 41 42 43 BRAZIL ROCHELEAU, GREGORY A ADDRESS REDACTED ROCHES, JOHN BODDEN ADDRESS REDACTED ROCKWELL, JOHN CLAYTON ADDRESS REDACTED CD DEL RODAMIENTOS TORNILLOS ANDRES MARTINEZ AV CAMARON NO 57 ESQ MOJARRA COL JUSTO SIERRA CARMEN CAMPECHE 86030 MEXICO RODDEY, GAVAN JAMES ADDRESS REDACTED RODGERS, ZACHARY DAKOTA ADDRESS REDACTED RODOLUB COMERCIO INEZ PINHAL RUA JACURRTA 842 PENHA RIO DE JANEIRO RJ CEP 21 020 BRAZIL RODOLUB SA COMERCIO DE LUBRIFI EDSON DIAS RUA CONCEICAO DE MARIA PIRES FERREIRA 321 VALE ENCANTADO MACAE RJ 27933 410 BRAZIL RODOMAC DE MACAE RODOVIA AMANDA PINTO RUA ACADEMICO PAULO SERGIO VASCONCELOS N 08 MACAE RJ 27937 300 BRAZIL

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 57 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 60 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country RODRIGUEZ HERNANDEZ, GENARO ADDRESS REDACTED RODRIGUEZ RODRIGUEZ, ADALBERTO ADDRESS REDACTED RODRIGUEZ RODRIGUEZ, JULIO CESAR ADDRESS REDACTED RODRIGUEZ VASCONCELOS, JOSE JUAN ADDRESS REDACTED RODRIGUEZ VERGARA, SEBASTIAN ENRIQUE ADDRESS REDACTED RODRIGUEZ, DAVID HERNANDO ADDRESS REDACTED RODRIGUEZ, MICHAEL JOSEPH ADDRESS REDACTED RODRIGUEZ, ROSEMARY ADDRESS REDACTED RODRIQUES, AURAIN MICHAEL ADDRESS REDACTED RODVIK, KARL JOHAN ADDRESS REDACTED ROESSLER, GEORGE A ADDRESS REDACTED ROGERS PEST CONTROL BOBBIE ROGERS 210 JANE AVE HOUMA LA 70363 ROGERS, ISAAC LYNN ADDRESS REDACTED ROGERS, JEFFREY W ADDRESS REDACTED ROJAS VIZCAYA, JASHELDIN ADDRESS REDACTED ROJAS VIZCAYA, MIGUEL ANGEL ADDRESS REDACTED ROJAS, JAIME JAVIER ADDRESS REDACTED TRINIDAD & ROLL TECHNOLOGIES (TRINIDAD) MARTI HOSSAIN TARDIEU MARINE COMPOUND CHAQUARAMAS TOBAGO ROLLS ROYCE MARINE N.A. 1900 RESTON METRO PLZ STE 400 RESTON VA 20190-5950 ROMAN JESUS VIVAS CASTILLO ROMAN JESUS VIVAS CASTILLO ADDRESS REDACTED ROMO TENORIO, RAMON ADDRESS REDACTED RONGO, JESSE COLE ADDRESS REDACTED ROQUE, MATTHEW SCOTT ADDRESS REDACTED ROQUELANE MENDONÇA DA SILVA ADDRESS REDACTED ONILSON MARTINS PEREIRA, ALEXANDRE DE SOUZA ROQUELANE MENDONÇA DA SILVA PEREIRA, ARTHUR TEIXEIRA FERNANDEZ ADDRESS REDACTED ROSA, GIOVANNI ANTONIO ADDRESS REDACTED ROSARIO, PAULLA ANDRESSA GOMES DO ADDRESS REDACTED ROSCOVIUS, BRIAN R ADDRESS REDACTED ROSE POINT NAVIGATION SYSTEMS 18005 NE 68TH STREET, SUITE A100 REDMOND WA 98052 ROSENBERGER, ALEXANDRA SONOKO ADDRESS REDACTED ROSHCHIN, SERGEY S ADDRESS REDACTED ROSS F LAGARDE APLC ALISON LAGARDE 2250 GAUSE BLVD EAST SUITE 301 SLIDELL LA 70461 ROSS, JEFFREY SCOTT ADDRESS REDACTED ROSS, RICHARD J ADDRESS REDACTED ROSS, SEAN J ADDRESS REDACTED ROSSI, TORIN X ADDRESS REDACTED ROULIER, CHRISTOPHER M. ADDRESS REDACTED ROUSE'S SUPERMARKET REGGIE AT CUT OFF 985-693-4858 PO BOX 5358 THIBODEAUX LA 70302 ROUSSEL, RONNIE J. ADDRESS REDACTED ROUTZAHN, KEVIN C ADDRESS REDACTED ROVOP INC STEPHANIE MORTON 13719 FM 529 HOUSTON TX 77041 ROWE, IRVIN CHAD ADDRESS REDACTED ROWE, JOHN JORDAN ADDRESS REDACTED ROWLEY, CHRISTOPHER M ADDRESS REDACTED ROY, TAYLOR DWYER ADDRESS REDACTED ROYAL BUSINESS SOLUTIONS LLC MIGNON KOHNKE 125 STELLA STREET METAIRIE LA 70005 ROYSTON RAYZOR VICKERY 1600 SMITH STREET SUITE 500 HOUSTON TX 77002 RPI CONSULTANTS BARBARA MCPHERSON 101 N. HAVEN STREET SUITE 201 BALTIMORE MD 21224 RR DONNELLEY RECEIVABLES ROSEMARY - ACCT REC PO BOX 932721 CLEVELAND OH 44193 945 EAST PACES FERRY ROAD RSUI GROUP NORTHEAST, SUITE 1800 ATLANTA GA 30326 RUBEN AGUSTIN CAÑEDO EN MANOS DE AMADOR PUENTE ESPARZA ADDRESS REDACTED RUFFINO, CRYSTAL ADDRESS REDACTED RUGGERI, CHRISTINA ROSE ADDRESS REDACTED RUGGIERO, CHRISTOPHER J ADDRESS REDACTED RUGGIERO, JOSEPH P ADDRESS REDACTED RUIZ BOLANOS, JESUS IVAN ADDRESS REDACTED RUIZ DOMINGUEZ, ANGELES ADDRESS REDACTED RUIZ FLORES, FRANCISCO JAVIER ADDRESS REDACTED RUIZ GAMBOA, KENNETH ADDRESS REDACTED RUKSE, JUSTIN M ADDRESS REDACTED RUNNER, WILLIAM TAYLOR ADDRESS REDACTED RUSSO, NICODEMUS G ADDRESS REDACTED RUTHERFORD, ROBERT JOSEPH ADDRESS REDACTED CENTRO RIO DE S A SOUTHEAST COMERCIO COTACOES E ASSITENCIA RUA 1 DE MARCO N 37 GRUPO 201 JANE RJ 20090007 BRAZIL S3 SUPPLY LLC TOMI DUPRE PO BOX 20333 HOUMA LA 70360 SA, DANIEL LADVOCAT DE BUSTAMANTE ADDRESS REDACTED

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country SAAVEDRA WONG, SERGIO ULISES ADDRESS REDACTED SABINE PILOT ASSOCIATION EMIL MILICH 5148 W PARKWAY GROVES TX 77619 SACCO, NICHOLAS A ADDRESS REDACTED SACOR SIDEROTECNICA S/A JORGE REGINATTO RODOVIA WASHINGTON LUIZ 6000 - DUQUE DE CAXIAS RIO DE JANEIRO RJ BRAZIL SACRED HEART HEALTH SYSTEM AMANDA JACOBS 7928 SOLUTION CENTER CHICAGO IL 60677-7009 SACRED HEART HOSPITAL PO BOX 2728 PENSACOLA FL 32513-2728 SACRED HEART MEDICAL GROUP SUB PO BOX 848367 BOSTON MA 02284 SACRED HEART MEDICAL GRP KITTY PO BOX 2766 PENSACOLA FL 32513 SADLER, EDWARD CHARLES ADDRESS REDACTED SAENZ, BRANDON ALEXANDER ADDRESS REDACTED SAETEC AUTOMACAO SERVICOS SANDRA SANTOS RUA ANA CRISTINA 79 COLUBANDE SAO GONCALO RJ 24744-520 BRAZIL SAFE HARBOR CANVAS JIM TUCKER 150 TCHEFUNCTE PARK DR MADISONVILLE LA 70447 SAFE MARINE ASSURANCE BRITTNEY L. SERRANO 9545 KATY FWY SUITE 345 HOUSTON TX 77024 SAFETY MANAGEMENT SYSTEM SHEILA HEBERT - SUA RECIPIENT PO BOX 92881 LAFAYETTE LA 70509 SAFETY SPECIALTY INSURANCE COMPANY 1832 SCHUETZ ROAD ST. LOUIS MO 63146-3540 SAINT JOSEPH'S HOSPITAL OF ATL NIKKEA WILLIS 5665 PEACHTREE DUNWOODY RD, NE ATLANTA GA 30342 SALADINO GALLERY LLC DANNY SALADINO 950 VILLAGE WALK COVINGTON LA 70433 SALARY.COM LLC KATE CULLINS PO BOX 844048 BOSTON MA 02284-4048 SALAS CUEVAS ALANIS, CARLOS GILBERTO ADDRESS REDACTED SALAS QUINTERO, IVAN ADDRESS REDACTED SALAZAR SALINAS, RAUL ADDRESS REDACTED SALCIDO ESPINOZA, JUAN MANUEL ADDRESS REDACTED SALDANA LARA, CESAR ANSBERTO ADDRESS REDACTED SALESMANSHIP CLUB OF DALLAS BRUCE W HUNT 106 E 10TH ST SUITE 200 DALLAS TX 75203-2296 SALGADO VEGA, JULIO CESAR ADDRESS REDACTED SALLES SAINZ GRANT THORNTON SC ESTEBAN URIOSTEGUI BARCENAS 4348 PERIFERCIO SUR MEXICO DF DF 4500 MEXICO SALVADOR JESUS COMPAN JARRIN LAURA MANCERA OCHOA ADDRESS REDACTED SAM PICKREN AC & HEAT GINA PAULK - SUA RECIPIENT 704 OSBOURNE STREET SAINT MARYS GA 31558 TRINIDAD & SAMAROO SONS INTEGRATED LTD MARLON SAMAROO NO ADDRESS TOBAGO SAMMY'S AIR & REPAIR SERVICE KENT LAPORTE - SUA RECIPIENT PO BOX 9277 NEW IBERIA LA 70562-9277 SAMPEY FABRICATION PAULA SAMPEY 914 LAFOURCHE ST LOCKPORT LA 70374 SAMPLING PLANEJAMENTO ROBSON SILVA RUA DR. WASHINGTON DE SOUZA ALBUQUERQUE MACAE 27925-490 BRAZIL SAMUELS, WALTER JEREL ADDRESS REDACTED SAN DIEGO HOSPITAL BASED PHY MELINDA PO BOX 2283 MANSFIELD TX 76063-0047 SAN DIEGO PATHOLOGISTS MEDICAL KAREN BERGER PO BOX 744127 DALLAS TX 75374-4127 SAN FRANCISCO BAR PILOTS PAMELA TOM PIER 9 EAST END SAN FRANCISCO CA 94111 SAN SIMON DUCH & CO S C LUIS DE SAN SIMON REGULO 12 MADRID 28023 SPAIN SANCHEZ CAMACHO, CESAR ADDRESS REDACTED SANCHEZ ITURRIOS, ADRIAN OSWALDO ADDRESS REDACTED SANCHEZ LOPEZ, JOSE GUADALUPE ADDRESS REDACTED SANCHEZ OSUNA, ALEJANDRO ADDRESS REDACTED SANCHEZ SANCHEZ, EMILIO ADDRESS REDACTED SANCHEZ SANCHEZ, GERARDO ADDRESS REDACTED SANDELL, SEAN LAWRENCE ADDRESS REDACTED SANDERS, ABBEY CLAIRE ADDRESS REDACTED SANDERS, LUIS A ADDRESS REDACTED SANDS, FRANK J ADDRESS REDACTED CIUDAD DEL SANIPLUS SERVICIOS SANITARIOS ARLENA VILLANUEVA CRILLO 28 COL EL POTRERO CARMEN CM 24158 MEXICO SANTANA, FRANK ADDRESS REDACTED SANTANA, LEONARDO DE SOUZA ADDRESS REDACTED SANTIAGO GARCIA, MARIJOSE ADDRESS REDACTED SANTISBON HERRERA, ANGEL FRANCISCO ADDRESS REDACTED SANTOS LEON, ALEXIS ADDRESS REDACTED SANTOS, ANNA FLAVIA DA SILVA ADDRESS REDACTED SANTOS, JOB CARLOS RIBEIRO DOS ADDRESS REDACTED SANTOS, JORGE LUIZ ADDRESS REDACTED SANTOS, JUCERLY OLIVEIRA DOS ADDRESS REDACTED SANTOS, MARCOS ESTUARTE BEZERRA ADDRESS REDACTED SANTOS, SIDNEI SANTANA DOS ADDRESS REDACTED SANTOS, VAGNER JOSE FREITAS DOS ADDRESS REDACTED NEWTOWN SAP AMERICA INC RICHARD BURNETT 3999 WEST CHESTER PIKE SQUARE PA 19073 SARSAH, KWASI ANSAH ADDRESS REDACTED SASS MARKETING JESSICA DENNIS PO BOX 2335 MANDEVILLE LA 70470 SATYR CLINICAL SERVICES INC MARY K PO BOX 46024 HOUSTON TX 77210 SAUCEDO, CHRISTOPHER M. ADDRESS REDACTED SAUNDERS YACHTWORKS SHANNA SMITH 605 WATERWAY EAST BLVD GULF SHORES AL 36542 SAWYER, CLINTON THOMAS ADDRESS REDACTED

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country SBA SHIPYARD SITE PRP GROUP BETH HESSE 30 WESTGATE PARKWAY #314 ASHVILLE NC 28806 SBC INTERNET SERVICES INC DBA AT&T 8310001242353 PO BOX 5019 CAROL STREAM IL 60197-5019 SBS NEUROMONITORING LLC AMY GRIFFIN 3535 S. SHERWOOD FOREST BLVD SUITE 249-B BATON ROUGE LA 70816 SCAFIDI, DONALD C ADDRESS REDACTED SCALE REPRODUCTIONS GINGER FARIAS 4040 ASHLAND AVENUE PENSACOLA FL 32534 SCF BRAZIL NP FUNDO DE INVEST LUCIANA MONTEIRO AV FARIA LIMA 3015 10 ANDAR SAO PAULO SP 1452000 BRAZIL SCHEDRIN, PYOTR V ADDRESS REDACTED SCHLEICHER, MATTHEW J ADDRESS REDACTED SCHLEICHER, THOMAS I ADDRESS REDACTED SCHLICHTE, RYAN M ADDRESS REDACTED SCHLOEGEL, KAREN C ADDRESS REDACTED SCHMITT, CHARLY JOSEPH ADDRESS REDACTED SCHNELLER, KEITH MICHAEL ADDRESS REDACTED SCHOBER ENGINEERING INC LARRY SCHOBER PO BOX 91 WOODBINE GA 31569 SCHOEN, KEVIN ANTHONY ADDRESS REDACTED SCHOENBERG, MICHAEL J ADDRESS REDACTED SCHONEKAS EVANS MCGOEY & MCEAC LAURA ALLAIN - SUA RECIPIENT 909 POYDRAS STREET SUITE 1600 NEW ORLEANS LA 70130 SCHOTTEL DO BRASIL PROPULSOES RODRIGO LEITE RUA HEITOR LIBERATO N927 CENTRO SANTA CATARINA 88303-100 BRAZIL SCHOTTEL INC JIM FREMIN 1741 DENLEY ROAD HOUMA LA 70363 SCHROEDER, GEORG F ADDRESS REDACTED MOUNT SCHUF USA INC KATHY CASHA 486 LONG POINT ROAD PLEASANT SC 29464 SCHULTZ, KEITH WALLACE ADDRESS REDACTED SCHUYLER MARITIME LLC JULIE PRIMEAUX 1036 VICKY LANE BROUSSARD LA 70518 SCHWEBACH, KATELYN ELLEN ADDRESS REDACTED SCIAMANNA, VINCENT E ADDRESS REDACTED SCL TECHNICAL COLLEGE TINA COLBERT PO BOX 2148 MORGAN CITY LA 70381 UNITED SCOR UK COMPANY LTD 10 LIME STREET LONDON EC3M 7AA KINGDOM SCOTT ARMATURE LLC NICOLE LOUP - SUA RECIPIENT PO BOX 919352 DALLAS TX 75391 SCOTT ARMATURE SALES & STORAGE NICOLE LOUP - SUA RECIPIENT PO BOX 919204 DALLAS TX 75391-9192 SCOTT ARMATURE SERVICES, LLC NICOLE LOUP - SUA RECIPIENT 2805 ENGINEERS ROAD BELLE CHASSE LA 70037 SCOTT EQUIPMENT COMPANY TREANAKA DARENSBURG - SUA P.O.BOX 1093 ST ROSE LA 70087-1093 SCOTT, MARY ELIZABETH ADDRESS REDACTED SCOTT, NICHOLAS PAUL ADDRESS REDACTED SCRIPPS MERCY HOSPITAL MALITA 4275 CAMPUS POINT COURT SAN DIEGO CA 92121-1513 SCROGGINS, LEROY ADDRESS REDACTED 6400 SANTA SCUDO OPTICO INDUSTRIAL LTDA ANA CLAUDIA AV PREFEITO ALBERTO MOURA RITA SETE LAGOAS MG 35.702-383 BRAZIL SCURLOCK ELECTRIC LLC KIMBER TEETER - SUA RECIPIENT 1903 GRAND CAILLOU RD HOUMA LA 70363 SDL INC JONATHAN DELONG 201 EDGEWATER DRIVE SUITE 225 WAKEFIELD MA 01880-1296 SEA HORSE MANUFACTURING LLC MELANIE GONSOULIN PO BOX 516 LYDIA LA 70569 SEA HORSE SYSTEMS LLC ALEXANDRA ROY 120 ROW 1 LAFAYETTE LA 70508 SEA SAFETY & SURVIVAL INC. SUA RECIPIENT 128 THOMPSON ROAD HOUMA LA 70363 SEA SCHOOL-MOBILE INC. CINDY DEAL 8440 4TH STREET N ST.PETERSBERG FL 33702 SEABROKERS BRASIL LTDA ROBESIO JAIR ARAUJO WALTZ RUA LAURO MULLER 116 - SALA: 3104 RIO DE JANEIRO RJ 22290-160 BRAZIL SEACATALOG.COM EMILY FAZZIO - SUA RECIPIENT 2261 DENLEY ROAD HOUMA LA 70363 SEACON - OFFSITE ONLY NANCY WARD - SUA RECIPIENT 1700 GILLESPIE WAY EL CAJON CA 92020 GREAT UNITED SEACON EUROPE LIMITED CRAIG SMITH SEACON HOUSE, HEWETT RD. GAPTON HALL INDUSTRIAL ESTATE YARMOUTH NORFOLK UX NR31ORB KINGDOM SEAGULL MARINE INC. JENNIFER ORGERON 115 CANVASBACK DR STE 100 ST ROSE LA 70087 SEAMAR DIVERS INTERNATIONAL ELOY ANAYA PO BOX 740976 HOUSTON TX 77274 SEAMAR DIVERS LLC ELOY ANAYA PO BOX 940835 MIAMI FL 33194 SEAPORT GLOBAL SECURITIES LLC DANIEL O CONWILL IV 400 POYDRAS STREET SUITE 3100 NEW ORLEANS LA 70130 SEASHORE MARINE LTDA MERIELEN DA SILVEIRA SANTOS RUA MARIO DE ALENCAR 33-LARANJAL SAO GONCALO RJ BRAZIL SEATS, DALE WAYNE ADDRESS REDACTED SEATTLE MARINE AND FISHING SUP CARLA MAEIANINLO PO BOX 99098 SEATTLE WA 98139 SEATTLE NUCLEAR MEDICINE TERRI HIGGINBOTHAM PO BOX 94001 SEATTLE WA 98124 SEC GRONINGEN B.V. DUINKERKENSTRAAT 40 PO BOX 5041 GORONINGEN 9700 GA NETHERLANDS RIO DE JANIERO SECRETARIA DA RECEITA FEDERAL AC PRESIDENTE ANTONIO CARLOS 375 CASTELO RJ 20020-010 BRAZIL SECRETARIA DA RECEITA FEDERAL DO BRASIL 375 CASTELO RIO DE JANEIRO RJ 20020-010 BRAZIL AVENIDA HEROICA ESCUELA NAVAL MEXICO CITY. CP SECRETARÍA DE MARINA (SEMAR) MILITAR NUM. 861 LOS CIPRESES, COYOACAN 04830 MEXICO SECRETARIA MUNICIPAL DE FAZEND AV PRESIDENTE SODRE 534 CENTRO MACAE RJ RJ 27913-080 BRAZIL SECRETARY OF THE TREASURY-PR OF PUERTO RICO PO BOX 9022501 SAN JUAN PR 00902-2501 ATTN: DAMIAN SCHAIBLE; DARREN SECURED LENDER GROUP C/O DAVIS POLK & WARDWELL LLP KLEIN; STEPHANIE MASSMAN 450 LEXINGTON AVE NEW YORK NY 10017

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 60 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 63 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country ATTN: JOHN HIGGINS; ERIC ENGLISH; SECURED LENDER GROUP C/O PORTER HEDGES LLP M. SHANE JOHNSON 1000 MAIN STREET 36TH FLOOR HOUSTON TX 77002 SECUREWORKS, INC ACCOUNTS RECEIVABLE PO BOX 534583 ATLANTA GA 30353-4583 SECURITIES & EXCHANGE COMM. PO BOX 979081 ST. LOUIS MO 63197 SECURITIES AND EXCHANGE COMMISSION 100 F STREET, NE WASHINGTON DC 20549 ATTN: ANDREW CALAMARI, REGIONAL SECURITIES AND EXCHANGE COMMISSION NEW YORK REGIONAL OFFICE DIRECTOR 200 VESEY ST STE 400 NEW YORK NY 10281-1022 SECURITY DATA SUPPLY OF MANDEVILLE, LA LLC ATTN: CHRIS OLIVIER 530 ASBURY DRIVE SUITE B MANDEVILLE LA 70471 SEEBER, JOHN PAUL ADDRESS REDACTED SEECA MEDICAL INC MELISSA DELAHOUSSAYE 249 CORPORATE DR HOUMA LA 70360 SEGALL GIRALDO, ALEXANDER ADDRESS REDACTED SEGURO INBURSA REINSURED BY STEAMSHIP UNITED MUTUAL UNDERWRITING ASSOCIATION LIMITED AQUATICAL HOUSE 39 BELL LANE LONDON E1 7LU KINGDOM NLCP64000 SEGUROS AFIRME SA DE CV AV. HIDALGO NO. 234 PTE MONTERRY MONTEREY 0MEXICO SEGUROS BANORTE SA DE CV FABIAN ROBLEDO CAMPACHE 276 PB COL HIPODROMO MEXICO SEGUROS INBURSA, S.A. GRUPO AV INSURGENTES SUR NO 3500 COL PENA POBRE MEXICO CITY DF 14060 MEXICO SEGUROS SURA SA CLARISSA TORRES AVENIDA NACOES UNIDAS 12.995 4 AN SAN AULO SP 04578-000 BRAZIL SELCO USA INC ANDERS JAKOBSEN 4560 RIVER BOTTOM DRIVE NORCROSS GA 30092 SELECT ANESTHESIA SERVICES PA DANIELA PO BOX 3945 DEPT 124 HOUSTON TX 77253-3945 SELECT PHYSICAL THERAPY PO BOX 536889 ATLANTA GA 30353 SELECT PHYSICAL THERAPY (GBPT) PO BOX 536889 ATLANTA GA 30353 SELF, ROBERT S ADDRESS REDACTED SELIG ADR INC LOUIS SELIG 5009 CAROLINE STREET SUITE 100 HOUSTON TX 77004-5715 SELLERS, CODY NASH ADDRESS REDACTED SENTAR INC MARVA MORSE 315 WYNN DRIVE SUITE 1 HUNTSVILLE AL 35805 SENTARA VIRGINIA BEACH GEN HOS PO BOX 79603 BALTIMORE MD 21279-0603 SEPARATOR SPARES & EQUIP LESLIE LINER 144 INTRACOASTAL DRIVE HOUMA LA 70363 SERHUS, SHAELYN S ADDRESS REDACTED SERMAP COMERCIO E SERVICOS LTD DANIEL SILVA R ALOISIO DE SILVA GOMES 161 MACAE RJ 27930-560 BRAZIL SERRANO LARA, ANTONIO ADDRESS REDACTED SERRANO ROSALES, DAVID ADDRESS REDACTED SERRENO, REBEKAH DAWN ADDRESS REDACTED SERVICEMASTER COMMERCIAL & IND NICOLE HYDEL RICKERSON-SUA REC CLEANING SERVICES 1759 L AND A ROAD METAIRIE LA 70001 CUIDAD DE SERVICIO DE ADMINISTACION TRIBUTARIA AV. HIDALGO 77 COL. GUERRERO, C.P. 06300 MEXICO MEXICO SERVICIO DE ADMINISTRACION BAHIA DE SANTA BARBARA NO 23 VERONICA ANZURES MEXICO CITY DF CP 11300 MEXICO SERVICIOS DE ASESORIA T LENIN CORDOVA HERNANDEZ BARRA DE OSTION NO 108 COLONIA FIDEL 89600 MEXICO SERVICIOS MULTIPLES DEL SUREST IRIS BRISEIDA FERMAN GARDUNO CALLE 13 NO 1619 COLONIA POCITOS Y RIVER VERACRUZ VZ 91729 MEXICO SETPOINT INTEGRATED SOLUTIONS PO BOX 935076 ATLANTA GA 31193-5076 SEVEN SEAS GERMANY GMBH ASTRID RAEHSE FRIESENWEG 1 HAMBURG HH 22763 GERMANY UNITED ARAB SEVEN SEAS GERMANY GMBH JOSHUA SICAT PLOT 598-668 DUBAI INVESTMENT PARK 1 PO BOX 5592 DUBAI EMIRATES SEVEN SEAS SA DE CV TULLIUS CARLOS GUEMEZ FLORES CALLE IGNACIO COMONFORT NO 543 PARAISO TB 86600 MEXICO SEVIGNY, RICHARD F ADDRESS REDACTED SEVILLA TIRADO, LUIS ULISES ADDRESS REDACTED SEWART SUPPLY INC CHRISTINA BOURG P O DRAWER L MORGAN CITY LA 70381 SEXTON, MATTHEW RAYMOND ADDRESS REDACTED SGHS -CAMDEN CAMPUS LINDSEY FUTCH PO BOX 1074 BRUNSWICK GA 31521-1047 SHAMROCK MARINE, LLC. APRIL DOYLE 900 RIVER RD S BATON ROUGE LA 70802-8043 SHANDS SOLANTIC JOINT VENTURE PO BOX 405941 ATLANTA GA 30384-5941 SHANNON HARDWARE CORP RICKY WEBER PO BOX 631 MORGAN CITY LA 70381 SHARP CORONADO HOSPITAL PERLITA FILE # 55726 LOS ANGELES CA 90074 SHARPE, BRANDON EDWARD ADDRESS REDACTED SHELL (SOPUS PRODUCTS) LEANEL CAMPOREDONDO DBA SHELL (SOPUS PRODUCTS) PO BOX 7247-6236 PHILADELPHIA PA 19170-6236 BARRA DA SHELL BRASIL PETROELO LTDA CONTATO DEPARTAMENTAL AV DAS AMERICAS 4200 BLOCO 6 TIJUCA RIO DE JANEIRO RJ 22640102 BRAZIL SHELL MARINE PRODUCTS (SMPUS) LEANEL CAMPOREDONDO PO BOX 4952 HOUSTON TX 77210 SHELTER CURSOS EM PROTECAO ANA CLAUDIA RUA VISCONDE DE INHAUMA 134 SALA 1230, CENTRO RIO DE JANEIRO RJ 20091-007 BRAZIL SHELTER ISLAND MEDICAL GROUP MELANIE MCINTYRE 1370 ROSECRANS STREET SUITE A SAN DIEGO CA 92106 SHEPHERD, THOMAS A ADDRESS REDACTED SHERIDAN HEALTHCORP INC PO BOX 74385 DEPT 10066 ATLANTA GA 30374-3835 SHERIFF AND EX-OFFICIO TAX COLLECTOR ATTN JERRY J. LARPENTER PO DRAWER 1670 HOUMA LA 70361 SHERMER, DANIEL TYLER ADDRESS REDACTED SHERWOOD, MATTHEW S. ADDRESS REDACTED SHEVCHENKO, TARAS ADDRESS REDACTED SHIPS MACHINERY INTERNATIONAL MARTHA ALVAREZ - SUA RECIPIENT 13005 SW 124 AVE MIAMI FL 33186 SHIRLEY, KENNETH RAYE ADDRESS REDACTED SHORT, ALBERT W ADDRESS REDACTED SHOWS, ALEXANDER A. ADDRESS REDACTED

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 61 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 64 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country SHOWS, HARVEY F. ADDRESS REDACTED SHOWS, SAMUEL DAVID ADDRESS REDACTED SHRED IT USA INC NATHAN KANTER PO BOX 13574 NEW YORK NY 10087-3574 SHRIMPTON, PATRICK DEVERELL ADDRESS REDACTED SHUART & ASSOCIATES DARNELL SHUART PO BOX 514 COVINGTON LA 70434 SHUBERT, STEVEN R ADDRESS REDACTED SIBERSKI, STANLEY JOHN ADDRESS REDACTED SICAL MACAE SOC INDUST MARILU FRAGOSO ROD AMARAL PEIXOTO 19 QD 25 LOTE 17 SAO JOSE DO BARRETO MACAE RJ 27965250 BRAZIL SICRE, RENE ADDRESS REDACTED SIDLEY AUSTIN LLP ALEXANDER HIRSHFELD ONE S. DEARBORN STREET CHICAGO IL 60603 SIDMAG 2008 ORGANIZACOES CONTA MAGDA CONTABILIDADE RUA PADRE MANUEL DA NOBREGA 975 APT 101 CASCADURA RIO DE JANEIRO RJ BRAZIL SIDORA, AARON MIKAL ADDRESS REDACTED SIEBRECHT, BLAKE L ADDRESS REDACTED SIELE, BRENNEN JAMES ADDRESS REDACTED SIEMENS ENERGY INC 4400 N ALAFAYA TRAIL ORLANDO FL 32826 SIEMENS INDUSTRY, INC JACK LOWENBERG PO BOX 2715 CAROL STREAM IL 60132 GIMENES MOLINA, 1745 DISTRITO SIEMENS LTDA ROSE MARY MONTEIRO AV ENGENHEIRO JOAO FERNANDES INDUSTRIAL JUNDIAI SAO PAULO SP 13213 BRAZIL SIERRA MARISCAL, CESAR AUGUSTO ADDRESS REDACTED SIEVERS, MATTHEW J ADDRESS REDACTED SIEVING, ALEC MICHAEL ADDRESS REDACTED SIGN LITE SARAH BADON 1490 I-10 SERVICE ROAD SLIDELL LA 70461 SIKES, JAMES CARRIGIAN ADDRESS REDACTED SILHAN, FRANCIS JOSEPH ADDRESS REDACTED SILK, MARY MARGARET ADDRESS REDACTED SILVA RENDON, JOHN JAIRO ADDRESS REDACTED SILVA ZAMUDIO, SAUL ADDRESS REDACTED SILVA, AGUINALDO THEMOTEO DA ADDRESS REDACTED SILVA, DANIEL L ADDRESS REDACTED SILVA, FELIPPE GOMES ADDRESS REDACTED SILVA, GERALDO SANTOS DA ADDRESS REDACTED SILVA, HELOISIO PEDROZA DA ADDRESS REDACTED SILVA, HUGO FRANCO DA ADDRESS REDACTED SILVA, JEFFERSON CARDOSO DA ADDRESS REDACTED SILVA, VALDEMAS SANTOS DA ADDRESS REDACTED SIMIEN, KEVIN JORDAN BRACY ADDRESS REDACTED SIMMONDS EQUIPMENT LLC BRIAN SIMMONDS PO BOX 905 BELLE CHASSE LA 70037 SIMMONS PLATING & GRINDING INC CLAY SPENCER 5829 PLAUCHE STREET JEFFERSON LA 70123 SIMMONS, SHELIA ADDRESS REDACTED SIMON PERAGINE SMITH ROXANNE ZIGLEAR 1100 POYDRAS STREET SUITE 3000 NEW ORLEANS LA 70163 SIMONAGGIO PERICIAS CONTABEIS PATRICIA FUCHS RODRIGUEZ RUA GEORGE OHM, 230 - TORRE B SAU PAULO SP 04576-020 BRAZIL SIMS, ALLAN R ADDRESS REDACTED SINCLAIR, ERIC WAYNE ADDRESS REDACTED SINDESNAV JOSE SILVERIO RUA DOS ANDRADAS 96 S/401 RIO DE JANEIRO RJ 20051001 BRAZIL SINDFOGO JERONIMO DE JESUS C BASTOS AV VENEZUELA, 27 SALAS 616/628, SAUDE RIO DE JANEIRO RJ 20081311 BRAZIL SINDICATO NACIONAL DOS CONDUTO ISABELLA AV PRESIDENTE VARGAS DE 330 A 590 SALAS 2204 2206 2207 RIO DE JANIERO RJ 20071-000 BRAZIL SINDICATO NACIONAL DOS TAIFEIR CARLOS ALBERTO RUA CAMERINO NO 128 - 5 ANDA BRAZIL SINDICATO NACIONAL DOS TAIFEIROS CULINARIOS RUA CAMERINO NO 128 - 5 ANDA RIO PANIFICADORES MARITIMOS DE JANEIRO RIO DE JANEIRO RJ BRAZIL SINDMARCONVES JOSIMAR PEREIRA FUA SILVINO MONTENEGRO 102 SAUDE RIO DE JANEIRO RJ 20220550 BRAZIL SINEGAL, KEVIN JOSEPH ADDRESS REDACTED SINGING RIVER HEALTH SYSTEM LEONA MCLEOD PO BOX 26627 SALT LAKE CITY UT 84126 SINGING RIVER RADIOLOGY GRP LUJEAN TRUMBLE PO BOX 2710 SLIDELL LA 70459 SINGLEY, MATTHEW PAUL ADDRESS REDACTED WEST PALM SISCO ANNIE PROENZA - SUA RECIPIENT 3595 FISCAL COURT BEACH FL 33404 SISTEMAS Y PRODUCTOS MARITIMOS CELIA ADMON CONTABILIDAD AV MALECON DE LA CALETA N 10 COL ELECTRICISTAS CD CARMEN CAMPECHE 24120 MEXICO SKELTON, MICHAEL DUANE ADDRESS REDACTED SKF USA INC SUSAN ROBINSON PO BOX 74007487 CHICAGO IL 60674-7487 SKINNER, COREY JUSTIN ADDRESS REDACTED SKLADANY, TRENT J ADDRESS REDACTED SKRMETTI, NICHOLAS PAUL ADDRESS REDACTED SKRYCKI, JOHN W ADDRESS REDACTED SLOAN, RICHARD PAUL ADDRESS REDACTED SLOOTMAKER MARINE EQUIPMENT PETER SLOOTMAKER-SUA RECIPIENT PO BOX 206 SWARTHMORE PA 19081 SLOVER, MATTHEW AUGUSTUS KERSEY ADDRESS REDACTED SMITH PROFESSIONAL RESOURCES MITCHELL SMITH -SUA RECIPIENT PO BOX 1961 MANDEVILLE LA 70470-1961 SMITH, AARON R ADDRESS REDACTED SMITH, ANDREW ELIAS ADDRESS REDACTED SMITH, BRIAN DEE ADDRESS REDACTED

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 62 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 65 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country SMITH, CALVIN JAMES ADDRESS REDACTED SMITH, CLYDE MITCHELL ADDRESS REDACTED SMITH, DANIEL JOHN ADDRESS REDACTED SMITH, DANIEL V. V ADDRESS REDACTED SMITH, DEQUAN VANANDEZ ADDRESS REDACTED SMITH, DONALD H ADDRESS REDACTED SMITH, JASON L ADDRESS REDACTED SMITH, JESSE JAMES ADDRESS REDACTED SMITH, OLIVIA ANNE ADDRESS REDACTED SMITH, RALPH GUY ADDRESS REDACTED SMITH, RHETT STEPHEN ADDRESS REDACTED SMITH, ROBERT O ADDRESS REDACTED SMITH, ROBLEY DUNGLISON ADDRESS REDACTED SMITH, SHAUN O ADDRESS REDACTED SMITH, VINCENT WESTLEY ADDRESS REDACTED SMS ANESTHESIA SPECIALISTS LLC SYLVIA MILLER PO BOX 79763 BALTIMORE MD 21279 SMS CONSULTING LTDA MARCO KRONEMBERGER RUA GUANABARA N 258 PRAIA DOS COQUEIROS ARARUAMA RJ 28970-000 BRAZIL SNEED, ELLIOTT QUINTON ADDRESS REDACTED SNOW, ANDREW M ADDRESS REDACTED SAN PEDRO SOCIEDAD DE TRANSPORTE (ANCORA CRISTOBAL ALBORNOZ MEGACENTRO SAN PEDRO KM10 RUTA 160 OFICINA 10-B DE LA PAZ CONCEPCION 4130000 CHILE SODEXO REMOTE SITES PARTNERSHI ACCOUNTS RECEIVABLE PO BOX 360170 PITTSBURGH PA 15251-6170 SOFIA PONCE CAMPOS ROSA DEL C AGUILAR LOPEZ ADDRESS REDACTED SOILEAU, TERRY JAMES ADDRESS REDACTED SOLAS REPRESENTACOES MOACIR SARMENTO RUA SAO JOAO 305 CENTRO NITEROI RJ 24020147 BRAZIL PARAISO, SOLUCIONES INTEGRALES MAGDALENA CORNELIO HERNANDEZ MANZANA 3 LOTE 6 COL LAZARO CARDENAS DEL RIO TABASCO 86606 MEXICO COL JUSTO CIUDAD DEL SOLUCIONES Y MULTISERVICIOS OJILVIE DEL SOCORRO NARVAEZ CALLE PIRANA ENTRE M MERO Y CURVINA NO 40A SIERRA CARMEN CM 24114 MEXICO CIUDAD DEL SOLUTION CRANE SERVICES MEXICO RYAN RICHARD CALLE 20 NO. 79 INTERIOR B COLONIA PALLAS CARMEN CAMPECHE 24140 MEXICO SOLUTIONS GRANTED INC AMANDA CREAN - SUA RECIPIENT 14017 TELEGRAPH ROAD WOODBRIDGE VA 22192 SONDEX INC. JAN PATRICK 7040 INTERNATIONAL DRIVE LOUISVILLE KY 40258 SONGCUYA, LOUIE JOHN JAEN ADDRESS REDACTED SONIAT DUFOSSAT, JEAN-CLAUDE ADDRESS REDACTED SORENSEN MOVING STORAGE, LLC MARY DANET 2401 POLICE CENTER DRIVE PLANT CITY FL 33566 SORGENFREI, TRACY LYNN ADDRESS REDACTED SOSA CANO, JUAN CARLOS ADDRESS REDACTED SOTEC, LLC LARRY KING - SUA RECIPIENT 5800 JEFFERSON HIGHWAY SUITE E NEW ORLEANS LA 70123 SOTO LLAMAS, MARCO ANTONIO ADDRESS REDACTED SOTO OCTAVIANO, GUSTAVO ADDRESS REDACTED AUXILIADOR SOUNDY TECNOLOGIA MARIA LUCIA AVENIDA JULIO DINIZ, 191 JARDIM NOSSA SENHORA A CAMPINAS 13075-420 BRAZIL SOUTH BALDWIN ANESTHESIA PC ASHLEY H. PO BOX 235019 MONTGOMERY AL 36123 SOUTH BALDWIN REGIONAL MEDICAL VALERIA Z. PO BOX 402375 ATLANTA GA 30384 SOUTH LOUISIANA ELECTRIC ATTN: CHERYL RICHARDSON PO BOX 4037 HOUMA LA 70361 SOUTH LOUISIANA MEDICAL ASSOC CHERYL 1990 INDUSTRIAL BLVD HOUMA LA 70363 SOUTHCOAST HEALTH MARIA PO BOX 15909 SAVANNAH GA 31416 SOUTHCOAST WELDING AND MFG L MATHIEU 2591 FAIVRE STREET BLDG 1 CHULA VISTA CA 91911 SOUTHE, DUANE ARTHUR RUDOLPH ADDRESS REDACTED SOUTHEAST ALASKA PETROLEUM RACHEL ROSS 540 WATER STREET SUITE 201 KETCHIKAN AK 99901-6378 SOUTHEAST ALASKA PILOTS ASSOC DISPATCH 1621 TONGASS AVE SUITE 300 KETCHIKAN AK 99901 SOUTHEAST BUSINESS SYSTEM KRISTIE BLADES 202 MARKET STREET HAMMOND LA 70401 SOUTHEAST GEORGIA PHYSICIANS SOUTHEAST GEORGIA PHYS ASSOC 2040 DAN PROCTOR DR STE 240 ST MARYS GA 31558 SOUTHEAST RIGGING INC SCOTT ELLIOTT 429 TALLEYRAND AVE JACKSONVILLE FL 32202 SOUTHEASTERN FREIGHT LINES DEIRDRE JACKSON PO BOX 100104 COLUMBIA SC 29202-3104 SOUTHERLAND, TRAVON LAMONT ADDRESS REDACTED SOUTHERN BRAIN & SPINE,LLC. TRACY COLLETTI PO BOX 952346 ATLANTA GA 31192-2346 SOUTHERN CRANE AND HYDRAULICS PATTY CLEMENT - SUA RECIPIENT PO BOX 39 BOURG LA 70343 SOUTHERN ELECTRONICS SUPPLY NICOLE DUPEIRE 2301 JULIA STREET NEW ORLEANS LA 70119 SOUTHERN FOREST PRODUCTS MEGAN COOPER PO BOX 81958 MOBILE AL 36689 SOUTHERN GUARD SERVICE LESLIE SMITH PO BOX 1030 LAROSE LA 70373 SOUTHERN LAUNDRY SYSTEMS LLC WAYNE FINLEY - SUA RECIPIENT 1070-B WEST CAUSEWAY APPROACH MANDEVILLE LA 70471 SOUTHERN MARINE & REPAIR MELISSA LEONARD- SUA RECIPIENT PO BOX 39 BOURG LA 70343 SOUTHERN THRUSTERS LLC KRISTEN BELANGER 253 CAPITAL BLVD HOUMA LA 70360 SOUTHWEST USERS GROUP, INC. LEE HOLLAHAN PO BOX 809 TAHLEQUAD OK 74465 SOUTHWEST WIRE ROPE SANDRA GUEVARA-SUA RECIPIENT PO BOX 849070 DALLAS TX 75821-9070 SOUZA, JOSE ROBERTO DE ADDRESS REDACTED SOUZA, THAIS ARAUJO DE ADDRESS REDACTED SOUZA, TRAVIS P ADDRESS REDACTED

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 63 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 66 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country SOVILLA, ROBERT M ADDRESS REDACTED SP PLUS CORPPORATION MARTHA WARD 3 GREENWAY PLAZA SUITE B220 HOUSTON TX 77048 SPANGLER, WILLIAM DODDS ADDRESS REDACTED SPARROWS OFFSHORE LLC HOLLY LANGHAM DEPT 3628 PO BOX 123628 DALLAS TX 75312-3628 SPEAR, MARSHALL GILBERT ADDRESS REDACTED SPECIALIST SERVICES REDGUARD CODY CHANDLER - SUA RECIPIENT 4340 S WEST ST WICHITA KS 67217 SPECIALTY TECHNICAL CONSULTANT LAURI ABED 2100 EMBARCADERO SUITE 204 OAKLAND CA 94606 SPECTRUM PO BOX 94188 PALATINE IL 60094-4188 SAN ROMAN SN MX LT5, ZONA 7 CIUDAD DEL SPEEDCAST COMM DE MEXICO MAURICIO MORALES SECTOR 1 COLONIA SAN JOAQUIN CARMEN CAMPECHE 24157 MEXICO SPEEDCAST COMMUNICATIONS INC DWAYNE DECUIRE - SUA RECIPIENT 4400 S. SAM HOUSTON PARKWAY E HOUSTON TX 77048 SPEER, JAMES A. ADDRESS REDACTED SPENCER, CHRISTOPHER A ADDRESS REDACTED SPENCER, ROBERT E ADDRESS REDACTED THE SPERRE ROTTERDAM BV WILLEM VAN HAREN NIJVERHEIDSWEG 17 3161 GJ RHOON NETHERLANDS NETHERLANDS SPERRY MARINE ACCOUNTS RECEIVABLE 1865 INDUSTRIAL BLVD HARVEY LA 70058 SPIRES, STEVEN L ADDRESS REDACTED SPIVEY, BILLY ADDRESS REDACTED SPIVEY, WARD D ADDRESS REDACTED SPORTSMAN'S IMAGEWEAR SCOTT ANDREWS 5717 CRAWFORD ST SUITE B NEW ORLEANS LA 70123 SPRINGHILL DIAGNOSTIC DEBBIE PO BOX 91628 MOBILE AL 36691 SPRINGHILL EMERGENCY PHYSICIAN CHIQUITA JORDAN PO BOX 830647 MSC #717 BIRMINGHAM AL 35283-0674 SPRINGHILL HOSPITALS INC ASHLEY BRELAND PO BOX 8246 MOBILE AL 36689 SPRINT HOO 923800279 PO BOX 219100 KANSAS CITY MO 64121-9100 SPRINT HOSPORT 677049230 PO BOX 219100 KANSAS CITY MO 64121-9100 SPRUILL, KELSEY ANN ADDRESS REDACTED SPX FLOW TECHNOLOGY DANMARK AS TINNA GOTFREDSEN PLATINVEJ 8 KOLDING 6000 DENMARK SRPS LLC PO BOX 504591 ST LOUIS MO 63150-4591 TRINIDAD & SSI TRINIDAD LTD (TRINIDAD) NADINE EASTERN MAIN RD SANGRE GRANDE TOBAGO CD DEL CARMEN SSIGA SA DE CV GABRIELA AMADOR NOTARIO CALLE 55 S/N ENTRE 40 Y 50 CAMP 24115 MEXICO ST JOSEPHS HOSPITAL INC KATIE DEPT 1627 PO BOX 11407 BIRMINGHAM AL 35246-1627 ST MARYS PARTS & SUPPLY JAMES STARLINE 1625 OSBOURNE RD SAINT MARYS GA 31558 ST TAMMANY PHYSICIANS NTWK LESLIE RODRIGUEZ PO BOX 54469 NEW ORLEANS LA 70154-4469 ST. AMANT, TYLER COREY ADDRESS REDACTED ST. ANDREW BAY PILOTS ASSOC MARSHA FRUDAKER PO BOX 1389 PANAMA CITY FL 32402-1389 ST. FRANCIS MEDICAL CENTER SHARON PHILLIPS PO BOX 1901 MONROE LA 71210-1901 ST. JOHNS BAR PILOT ASSOC PAM SNYDER 4910 OCEAN STREET ATLANTIC BEACH FL 32233 ST. MARY PARISH SHERIFF'S OFF PO BOX 610 PATTERSON LA 70392-0610 ST. PAUL'S SCHOOL BROTHER GALE CONDIT PO BOX 928 COVINGTON LA 70434 ST. SCHOLASTICA ACADEMY 122 SOUTH MASSACHUSETTS ST. COVINGTON LA 70433 ST. TAMMANY PARISH HOSPITAL SE BONE & JOINT CLINIC PO BOX 54503 NEW ORLEANS LA 70154 ST. TAMMANY TROPHIES & AWARD SUSAN BROCK 108 CHINCHUBA GARDENS MANDEVILLE LA 70471 ST. TAMMANY W. CHAMBER OF COM. SALLY BROWN, EXT 23 610 HOLLYCREST BLVD. COVINGTON LA 70433 ST. VINCENT & GRENADINES MARITIME ADMINISTRATION 74 BD D'ITALIE E/F MONACO 98000 MONACO STAFFEL, JOHN W ADDRESS REDACTED STALLION OFFSHORE QUARTER ELIZABETH JOHNS PATEK PO BOX 842364 ATTN: ACCOUNTS RECEIVABLE DALLAS TX 75284-2364 STANDARD & POOR'S CREDIT CARD PAY SUA RECIPIENT 2542 COLLECTION CENTER DRIVE CHICAGO. IL 60693 STANFORD, BRADLEY DAREL ADDRESS REDACTED STANSBURY, MATTHEW G ADDRESS REDACTED STANSELL, CHAJUANTE NICOLE ADDRESS REDACTED STAPLES, BYRON T ADDRESS REDACTED STAR TECH MARINE ELECTRONICS LORETTA DUVAL C/O EVERGREEN WORKING CAPITAL PO BOX 3729 HOUMA LA 70361-3729 STAR TEX POWER, LLC PO BOX 650827 DALLAS TX 75265-0827 STARK ENGENHARIA LTDA ANTONIO CAPUTO RUA CORONEL MIRANDA 49 PONTA DE AREIA NITEROI RJ 24040 025 BRAZIL STARKEY AND PAINTER TRANSPORTS PETE STARKEY PO BOX 11099 OLYMPIA WA 98508-1099 STARKEY, PAUL THOMAS ADDRESS REDACTED 8401 NORTH CENTRAL EXPRESSWAY STARR INDEMNITY & LIABILITY COMPANY 5TH FLOOR DALLAS TX 75225 STATE OF CALIFORNIA FISH & GAM JOSEPH OFFICE OF SPILL PREVENTION PO BOX 944209 SACRAMENTO CA 94244-2090 STATE OF CALIFORNIA FISH & GAME OFFICE OF SPILL PREVENTION PO BOX 944209 SACRAMENTO CA 94244-2090 STATE OF LOUISIANA DEPARTMENT OF NATURAL RESOURCES OFFICE OF CONSERVATION C/O CIVIL DIVISION/LANDS & NATURAL RESOURCES ATTN: RYAN M. SEIDEMANN PO BOX 94005 BATON ROUGE LA 70804-9005 STATE OF LOUISIANA DEQ ASHLEY BROOM FINANCIAL SERVICES DIVISION P.O.BOX4311 BATON ROUGE LA 70821 STATE OF LOUISIANA, DEPARTMENT OF NATURAL RESOURCES, OFFICE OF CONSERVATION JOHN ADAMS 617 NORTH THIRD STREET BATON ROUGE LA 70802 STATE OF LOUISIANA, DEPARTMENT OF NATURAL RESOURCES, OFFICE OF CONSERVATION RYAN M SEIDEMANN 1885 NORTH THIRD STREET BATON ROUGE LA 70802

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 64 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 67 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country STATE OF LOUISIANA-DEPT OF WIL PO BOX 60051 NEW ORLEANS LA 70160-0051 STATE OF MICHIGAN MICHIGAN OFFICE OF FINANCIAL PO BOX 30701 LANSING MI 48909-8201 STATE OF NEW JERSEY PO BOX 666 TRENTON NJ 08646-0193 STATE OF NEW JERSEY - MFA DIVISION OF TAXATION PO BOX 189 TRENTON NJ 08695-0189 STATE OF NEW JERSEY-REVENUE TODD JACKSON PO BOX 308 TRENTON NJ 08646 STATEWIDE TRANSPORT INC MELORA MCCLENDON 42228 JEFFERSON DR HAMMOND LA 70403-2158 1400 AMERICAN LANE TOWER 2 STEADFAST INSURANCE COMPANY FLOOR 5 SCHAUMBURG IL 60196 STEAMSHIP MUTUAL UNDERWRITING ASSOCIATION UNITED LIMITED AQUATICAL HOUSE 39 BELL LANE LONDON E1 7LU KINGDOM STEELE'S MARINE & CUSTOM DWALYN STEELE PO BOX 2117 MORGAN CITY LA 70381 STEEVES, JUSTIN B ADDRESS REDACTED STEINKUHL, LARRY GENE ADDRESS REDACTED STEPHEN ALDROVANDI STEPHEN ANDROVANDI 17218 BROWN ROAD ODESSA FL 33556 STEPHEN D LONDON ATTORNEY STEPHEN LONDON 1100 POYDRAS ST SUITE 2950 NEW ORLEANS LA 70163 STEVE KRABLIN ADDRESS REDACTED STEVE R RANDLES STEVE RANDLES ADDRESS REDACTED STEVE S. KIM C/O JP MORGAN ADDRESS REDACTED STEVE S. KIM C/O JP MORGAN ADDRESS REDACTED STEVEN PESTA ADDRESS REDACTED STEVEN PESTA C/O THE YOUNG FIRM ADDRESS REDACTED STEVENS, JON ROBERT ADDRESS REDACTED STEVENSON, ZACKARY T ADDRESS REDACTED STEWART, DANIEL JOHN ADDRESS REDACTED STEWART, EDWARD JOHN ADDRESS REDACTED STEWART, JAMES ANTHONY ADDRESS REDACTED STEWART, JOHNATHAN DYLAN ADDRESS REDACTED STEWART, MICHAEL A ADDRESS REDACTED STEWART, STEPHEN PAUL ADDRESS REDACTED STILES, GREGORY ZANE ADDRESS REDACTED STINSON, JAMES B ADDRESS REDACTED STIRLING PROPERTIES LLC DAVID SPEAR 109 NORTHPARK BLVD, SUITE 300 COVINGTON LA 70433 STITT, JIM PAUL ADDRESS REDACTED STOCKWOOD, SAMUEL LOUIS ADDRESS REDACTED STOGNER, JOHN T ADDRESS REDACTED STONE, GREGORY L ADDRESS REDACTED STONEHILL INSTITUTIONAL PARTNERS, L.P. C/O STONEHILL CAPITAL ATTN: SAMIR ARORA 885 THIRD AVENUE 30TH FLOOR NEW YORK NY 10022 885 THIRD AVENUE, 30TH FLOOR - STONEHILL INSTITUTIONAL PARTNERS, LP C/O STONEHILL CAPITAL MANAGEMENT LLC ATTN: SAMIR ARORA SUITE 3010 NEW YORK NY 10022 STONEHILL MASTER FUND LTD. C/O STONEHILL CAPITAL ATTN: SAMIR ARORA 886 THIRD AVENUE 30TH FLOOR NEW YORK NY 10022 885 THIRD AVENUE, 30TH FLOOR - STONEHILL MASTER FUND LTD. C/O STONEHILL CAPITAL MANAGEMENT LLC ATTN: SAMIR ARORA SUITE 3010 NEW YORK NY 10022 STORMGEO CORP INC LILA ABDEL DEPT LA 24681 PASADENA CA 91185-4681 STOROZHENKO, DMITRY ADDRESS REDACTED STRAHAN, TERRY LEE ADDRESS REDACTED STRAIN, ANGELA MICHELLE ADDRESS REDACTED STRAITS ELECTRIC LLC CHRISTIE TUCKER PO BOX 2914 PORT ANGELES WA 98362 UNITED STRATEGIC OFFSHORE RESEARCH JO SLADE 32 CARDEN PLACE TOP FLOOR ABERDEEN AB101UP KINGDOM STRICKER, NEIL ADDRESS REDACTED STRICKLAND, CHARLES W ADDRESS REDACTED STROM, KEVIN DALTON ADDRESS REDACTED STROOCK & STROOCK & LAVAN LLP CHRISTOPHER GUHIN 180 MAIDEN LANE NEW YORK NY 10038 STRUCK, ALBERTO ENRIQUE ADDRESS REDACTED STUEBING, DANIEL J ADDRESS REDACTED SUAMEC COMERCIO E SERVIC LUIS FRAGOSO RUA OTAVIO LAURINDO DE AZEVEDO 368 MACAE RJ 27923 170 BRAZIL SUAREZ RODRIGUEZ, JUAN PABLO ADDRESS REDACTED SUBHAN, RICHARD ADDRESS REDACTED SUBSEA GLOBAL SOLUTIONS LANDON LAMAIRE 10890 75TH STREET LARGO FL 33777 SUCALIT, RUTHIEL B ADDRESS REDACTED SUCCESSFACTORS INC ATTENTION AR PO BOX 89 4642 LOS ANGELES CA 90189 4642 SUFFICOOL, JACQUELINE MARIE ADDRESS REDACTED SULAMERICA GUILHERME MACHASO DOS SANTOS RUA BEATRIZ LARRAGOITI LUCAS 121 CIDADE NOVA RIO DE JANEIRO RJ 20211-903 BRAZIL SULAMERICA ODONTOLOGICO SA RAFAEL SOUZA RUA PEDRO AVANCINI NUMERO 73 SAO PAULO SP 05679-160 BRAZIL SULLIVAN, ERIN MARGARET ADDRESS REDACTED SULLIVAN, TIMOTHY D ADDRESS REDACTED SUMLIN, ERIC L ADDRESS REDACTED SUMMIT ELECTRIC SUPPLY SHAUNA MARTINEZ PO BOX 848345 DALLAS TX 75284-8345 SUNGARD AVAILABILITY SERVICES CRAIG MOYER PO BOX 776896 CHICAGO IL 60677-6896 SUNSOURCE DAWN WOLFF - SUA RECIPIENT PO BOX 74007453 CHICAGO IL 60674-7453

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 65 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 68 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country SUNY MARITIME COLLEGE 6 PENNYFIELD AVE. BRONX NY 10465 SUPER WELDING OF SOUTHERN CA AMELIA VICTORIA 609 ANITA STREET CHULA VISTA CA 91911 SUPERFIT L.L.C. JILL MOFFITT 6124 RIVERBROOK DRIVE BATON ROUGE LA 70820 SUPERFUND MANAGEMENT OPERATIONS C/O EVERGREEN RESOURCES GROUP, LLC ATTN SCOTT CULLINAN 2 RIGHTER PKWY, SUITE 200 WILMINGTON DE 19803 SUPERFUND MANAGEMENT OPERATIONS SCOTT CULLINAN 2 RIGHTER PARKWAY SUITE 120 WILMINGTON DE 19803 SUPERFUND MANAGEMENT OPERATIONS SCOTT CULLINAN 2 RIGHTER PARKWAY SUITE 200 WILMINGTON DE 19803 SUPERINTENDENTE DE TRIBUTAÇÃO E SUBSECRETÁRIO ADJUNTO DE FISCALIZAÇÃO DA SECRETARIA DE ESTADO DE FAZENDA DO RIO DE JANEIRO – SEFAZ –RJ. C/O STATE ATTORNEY OFFICE OF RIO DE JANEIRO ATTN: MARCELO LOPES DA SILVA R. DO CARMO, 27 - CENTRO RIO DE JANEIRO CEP 20011-020 BRAZIL SUPERIOR ENERGIES INSULATION AMBER - SUA RECIPIENT PO DRAWER 386 GROVES TX 77619 SUPERIOR MARINE TECHNICAL SERV ALINA HEBERT - SUA RECIPIENT 6928 WEST PARK AVE HOUMA LA 70364 GOLDEN SUPERIOR SHIPYARD AND FABRICAT TONI CUROLE 20987 HWY 1 MEADOW LA 70357 SUPPLY LOG OIL AND GAS LTDA ANDREIA DE OLIVEIRA MAR AVENIDA DAS AMERICAS BARRA DA TIJUCA RIO DE JANEIRO RJ BRAZIL SUPPLY MARINE SERVICOS LTDA HELENO PALMIERI MOREIRA RUA DOM MEIRADO 35 SAO CRISTOVAO RIO DE JANEIRO RJ 20.910-100 BRAZIL SUPREME SERVICE AND SPECIALTY GIL TALBOT 204 INDUSTRIAL AVE C HOUMA LA 70363 SURCEDO CONNOR, LEX ANDRUW ADDRESS REDACTED SURFACE SYSTEMS INC SUZANNE BROADWELL-SUA RECIPIEN 2619 TCHOUPITOULAS STREET NEW ORLEANS LA 70130 SURFACE TECHNOLOGIES CORP SYLVIA JACOBS - SUA RECIPIENT PO BOX 330046 ATLANTIC BEACH FL 32233 LAUDERDALE SURGERY CENTER OF FT LAUDERDAL COOKIE 4485 NORTH STATE ROAD 7 LAKES FL 33319 SAO SURICATTA INTELEGENCIA ROBERTA CASTRO RUA MARIA CANDIDA N19 CS01 MUTONDO GONCALO RJ 24450-690 BRAZIL SURVITEC SAFETY SOLUTIONS BRAZ RENATA MENDES RUA BISPO LACERDA, 67, DEL CASTILHO RIO DE JANEIRO RJ 21051-120 BRAZIL SURVITEC SAFETY SOLUTIONS US DAN WANG - SUA RECIPIENT 290 BELTWAY GREEN BLVD SUITE 400 PASADENA TX 77503 INDUSTRILA TRINIDAD & SURVIVAL SYSTEMS (TRINIDAD) VASHA RACKAL 3A PLAISANCE PARK ESTATE TOBAGO SURVIVAL SYSTEMS INTERNATIONAL CLAUDIO ZAVALA PO BOX 1855 34140 VALLEY CENTER ROAD VALLEY CENTER CA 92082 SUSAN M. DIGNAN ATTN: ANDREW DIGNAN/ SUSAN DIGNAN ADDRESS REDACTED 301 MAIN STREET, SUZANNE SMAIHALL CORNELIUS C/O BREAZEALE, SACHSE & WILSON, L.L.P. ATTN: ERIC B. LANDRY ONE AMERICAN PLACE SUITE 2300 BATON ROUGE LA 70801 SUZETTE DUCKSWORTH SWAGERTY-DEIROSSI, ANTHONY ADDRESS REDACTED SWAMY, LINDON RAMESH ADDRESS REDACTED SWASEY, DANIEL ADDRESS REDACTED SWEDISH GASTROENTEROLOGY GLENN PO BOX 25608 SALT LAKE CITY UT 84125-0608 SWEDISH MEDICAL CENTER KIMBERLY PO BOX 26828 SALT LAKE CITY UT 84126-0828 SWEDISH SURGICAL SPECIALISTS GLENN PO BOX 25608 SALT LAKE CITY UT 84125-0608 SWISS RE INTERNATIONAL SE (RAPPRESENTANZA PER L'ITALIA - GENOA) VIA DI SAN BASILIO 72 ROME 00187 ITALY CIUDAD DEL SYCEC CONSULTORIA SA DE CV LAURA GUADALUPE AYALA LOPEZ CALLE 51 N.176 ENTRE 50 Y 50A COLONIA SANTA MARGARITA CARMEN CM 24120 MEXICO SYLVESTER, SHERMAN B ADDRESS REDACTED SYMETRA LIFE INSURANCE COMPANY CANDACE BECKER PO BOX 1491 MINNEAPOLIS MN 55480 SYNDARMA HELOISA RUA VISCONDE DE INHAUMA 134 GR 1005 RIO DE JANEIRO RJ 20091901 BRAZIL SYSCO FOODS SOUTH FLORIDA INC LINDA TORRENTS PO BOX DRAWER 64000A MIAMI FL 33164 SYSTEMS PLANNING AND ANALYSIS ROSE CERESA 2001 N BEAUREGARD STREET ALEXANDRIA VA 22311 SZMAGALSKI, THOMAS DAVID ADDRESS REDACTED TRINIDAD & T&T NATIONAL PETROLEUM PAMELA GOSEINE NP HOUSE NATIONAL DRIVE SEA LOTS PORT OF SPAIN TOBAGO TABONE, JOSEPH W ADDRESS REDACTED TACOMA GENERAL ALLENMORE HOSP 315 MARTIN LUTHER KING JR WAY TACOMA WA 98405 TAGGART MORTON OGDEN STAUB JAMES R MORTON 1100 POYDRAS ST SUITE 2100 NEW ORLEANS LA 70163-2100 TALEN'S MARINE & FUEL, LLC ATTN: JOHN BEN BLACKBURN 4200 STONE ROAD KILGORE TX 75662 TALEN'S MARINE & FUEL, LLC ROBERT D. BONDURANT & CHRIS BOOTH 4200 STONE ROAD KILGORE TX 75662 TALEN'S MARINE & FUEL, LLC ROBERT D. BONDURANT & CHRIS BOOTH P.O. BOX 191 KILGORE TX 75663 PARAISO TALLER DE SOLDADURA ELECTRICA JOSE DE LA CRUZ ROMERO PROLONGACION SANTOS DEGOLLADO S/N TABASCO 86606 MEXICO TALLERES NAVALES DEL GOLFO FLOR ALEJANDRA HERRERA MARTINE ISLOTE DE SAN JUAN DE ULVA S/N 91800 VERACRUZ VERACRUZ 91800 MEXICO TAMCO PROFESSIONAL COATINGS DESIREE BOUDREAUX 175 THOMPSON ROAD HOUMA LA 70363 TAMROTOR MARINE COMPRESSORS AS OLAUG BAKKEN PO BOX 3 - FURUSETH OSLO N-1001 NORWAY TANGIPAHOA PAR SALES & USE TAX PO BOX 159 AMITE LA 70422 TANGIPAHOA PARISH SHERIFF’S OFFICE PO BOX 942 AMITE LA 70422 TANGIPAHOA PARISH SHERIFFS OFC PO BOX 942 AMITE LA 70422-0942 TANGIPAHOA WATER DISTRICT PO BOX 2153 BIRMINGHAM AL 35287-1340 TANKS-A-LOT, INC. DEANNA STANSBURY PO BOX 1636 MORGAN CITY LA 70381 TATUM, ERNIE ARNOLD ADDRESS REDACTED TAX ASSESSOR COLLECTOR ATTN DANETTE MILLICAN PO BOX 941 CROCKETT TX 75835

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 66 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 69 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country TAX ASSESSOR COLLECTOR COLLIN COUNTY ATTN KENNETH L. MAUN PO BOX 8046 MCKINNEY TX 75070-8046 TAX ASSESSOR CROCKETT TX DANETTE MILLICAN DANETTE MILLICAN PO BOX 941 CROCKETT TX 75835 TAX ASSESSOR-COLLECTOR ATTN ANN HARRIS BENNETT PO BOX 4622 HOUSTON TX 77210-4622 TAX COLLECTOR - ST. TAMMANY PO BOX 61041 NEW ORLEANS LA 70161-1041 TAX COLLECTOR-PARISH OF ST. TAMMANY PO BOX 61041 NEW ORLEANS LA 70161-1041 TAYLOR, CRAIG STEPHEN ADDRESS REDACTED TAYLOR, DAVID ANDREW ADDRESS REDACTED TAYLOR, GARY E ADDRESS REDACTED TAYLOR, JACOB ROBERT ADDRESS REDACTED TAYLOR, WALTER JACKSON ADDRESS REDACTED TAYLORS INTERNATIONAL SER SKYLAR SAVOIE PO BOX 81154 LAFAYETTE LA 70598 TAYLORS MEXICO M. FLORES AV 2 ORIENTE ENTRE CAMPECHE 24140 MEXICO TCEQ PO BOX 13087 AUSTIN TX 78711-3087 TCHEFUNCTA COUNTRY CLUB GREGORY KLEMP 2 COUNTRY CLUB PARK COVINGTON LA 70433 TCI MECHANICAL INC LORI EWING - SUA RECIPIENT 44 DUTTON ISLAND RD W ATLANTIC BEACH FL 32233 TEAMTEC AS PER EGIL AUESTAD NYVEI 41 TVEDESTRAND N-4900 NORWAY TECH OIL PRODUCTS INC BETTY PO BOX 733266 DALLAS TX 75373-3266 TECHDIVING MARING SERVICES EVELIN GONZALEZ AVENIDA CONSTITUYENTES NO 2740 VERACRUZ 91700 MEXICO TECHNOLOGY ASSOCIATES INC NIKI MOUTON 2021 LAKESHORE DR STE 414 NEW ORLEANS LA 70122-3540 TECNO FIRE SA DE CV NATALY TOLOSA AV ASLA DE TRIS CD DEL CARMEN CP CP 24150 MEXICO TECNOFIRE EQUIPAMENTOS CONTRA SERGIO MONTALVA FARIA AVE ITAOCA NO 660 GALPAO 02 RIO DE JANEIRO RJ 21061-020 BRAZIL TECNOLOG TRANSPORTES FABIA ROBERTA AV PREFEITO ARISTEU FERREIRA DA SILVA, 99 MACAE, RJ BRAZIL TECNOSUB RICARDO ALTOMARE RUA ANTUNES MACIEL 112 SAO CRISTOVAO RIO DE JANEIRO RJ 20940 010 BRAZIL TECNOWOLF COMERCIO LTDA LEONARDO LOBO OU REGINA FONSEC RUA DIAS DA CRUZ 188 COMPLEMENTO RIO DE JANEIRO RJ 20720-012 BRAZIL TEEHAN, COLIN T ADDRESS REDACTED TEIXEIRA, GUILHERME AUGUSTO DA SILVA ADDRESS REDACTED TEKNOFIL COMERCIAL LTDA NELSON DIAS ESTRADA JOAO BATISTA QUARESMA 44 LOJA 1 2 3 MACAE RJ 27930 480 BRAZIL UNITED TELEDYNE TECHNOLOGIES INC (UK) ROSS MITCHELL 1 BLACKMOOR LANE WATFORD WD188GA KINGDOM TELEMAR NORTE LEST SA OI FIXO ACCOUNTING RUA DO LAVRADIO 71 RIO DE JANEIRO RJ 20230 070 BRAZIL TELEMAR USA LLC JENNIFER STEEN - SUA RECIPENT PO BOX 5727 PASADENA TX 77508 TELEXPERTS TELECOMUNICACOES AV DAS AMERICAS 4485 LOJA 112 BARRA DA TIJUCA RJ 22631-004 BRAZIL TELNAV TELECOMUNICACAOES LTDA SAMUEL MOURAO AV RUI BARBOSA 1860 SALA 104 MACAE RJ 27915 012 BRAZIL TELNAV TELECOMUNICACOES NAVAIS SAMUEL MOURAO AV RUI BARBOSA 1860 SALA 104 ALTO DOS CAJUEIROS MACAE RJ BRAZIL TEMPLE, JOSEPH LEWIS ADDRESS REDACTED TENTS OF THE SOUTHWEST INC SHERRI MOORE - SUA RECIPIENT 5920 KILLOUGH HOUSTON TX 77086 TEOFANI DOMINGUEZ, IRVING ADDRESS REDACTED TERREBONNE GENERAL MEDICAL RONDA BULL PO BOX 6037 HOUMA LA 70361 TERREBONNE GENERAL MEDICAL CEN MILLIE DUPLANTIS DEPT AT 952602 ATLANTA GA 31192 TERRELL MICELI INVESTIGATIONS PO BOX 1955 SLIDELL LA 70459-1955 TESALAB JANE CRISTINA RUA FRANCISCO PORTELA 229 CENTRO MACAE RJ 27910 BRAZIL TEXAS COMPTROLLER OF PUBLIC ACCOUNTS PO BOX 149348 AUSTIN TX 78714-9348 TEXAS DRAIN TECHNOLOGIES, INC. GARY GOULD 4918 PINEMONT DRIVE SUITE A HOUSTON TX 77092 TEXAS EM-1 MEDICAL SERVICES PA ANN PO BOX 98694 LAS VEGAS NV 89193 TEXAS OFFICE OF THE ATTORNEY GENERAL 300 W. 15TH ST AUSTIN TX 78701 TEXAS RADIOLOGY ASSOCIATES LLP TERRI PO BOX 2285 INDIANAPOLIS IN 46206 THAG MIX DISTRIBUIDORA DE EMBA ANDREA MENDENCA RUA GRALHA DO CAMPO 204 RIO DE JANEIRO RJ 22713-940 BRAZIL THE AD HOC COMMITTEE OF UNSECURED NOTEHOLDERS C/O COLE SCHOTZ P.C. ATTN: MICHAEL D. WARNER 301 COMMERCE STREET SUITE 1700 FORT WORTH TX 76102 THE AD HOC COMMITTEE OF UNSECURED NOTEHOLDERS C/O MILBANK LLP ATTN: BRETT GOLDBLATT 2029 CENTURY PARK EAST 33RD FLOOR LOS ANGELES CA 90067-3019 THE AD HOC COMMITTEE OF UNSECURED ATTN: ERIC K. STODOLA; GERARD NOTEHOLDERS C/O MILBANK LLP UZZI; JAMES BALL 55 HUDSON YARDS NEW YORK NY 10001-2163 THE AUBERT LAW FIRM DAVID GOLD 222 NORTH VERMONT STREET COVINGTON LA 70433 THE BUREAU OF NATIONAL AFFAIRS CATHERINE HUTCHINSON PO BOX 17009 BALTIMORE MD 21297-1009 THE CANYON VALUE REALIZATION MASTER FUND, ATTN: SHELLY SKAUG; SONYA 2000 AVENUE OF THE STARS, 11TH LP C/O CANYON CAPITAL ADVISORS, LLC NELSON FLOOR LOS ANGELES CA 90067 THE DEPOSITORY TRUST COMPANY TREASURERS DEPARTMENT PO BOX 27590 NEW YORK NY 10087-7590 THE DINGHY DOCTOR INC JO SIMOES 1271 SCOTT STREET SAN DIEGO CA 92106 THE DOCTORS CLINIC DONNA MARCELLE 9621 RIDGETOP BLVD NW SILVERDALE WA 98383-8502 THE JANKOVICH COMPANY LINDA B PO BOX 670 SAN PEDRO CA 90733 THE KIRKPATRICK GROUP INC MEGAN WAMSLEY - SUA RECIPIENT 2701 DOBIE DRIVE SUITE 800 PLANO TX 75074 THE KULLMAN FIRM ATTN: DWAYNE O. LITTAUER 1100 POYDRAS STREET SUITE 1600 NEW ORLEANS LA 70163 THE KULLMAN FIRM MARY PRINGLE 1100 POYDRAS STREET SUITE 1600 NEW ORLEANS LA 70163 UNITED THE MARINE INSURANCE COMPANY LIMITED 20 FENCHURCH STREET LONDON EC3M 3AU KINGDOM THE MEREDITH MANAGEMENT GROUP MARGIE ROSATI STATION SQUARE THREE STE 202 37 NORTH VALLEY ROAD PAOLI PA 19301-1314 THE NEUROMEDICAL CENTER ANDREA PO BOX 98509 BATON ROUGE LA 70884 THE POLARIS GROUP, LTD. ELI BJORNOY 4055 21ST AVE. WEST #200 SEATTLE WA 98199

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 67 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 70 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country THE PRUDENTIAL INSURANCE COMPANY OF AMERICA COURTNEY SMITH PO BOX 101241 ATLANTA GA 30392 THE TIM LENTZ CAMPAIGN TIM LENTZ 427 N THEARD STREET SUITE 101 COVINGTON LA 70433 THE TIMES PICAYUNE PO BOX 9001024 LOUISIVILLE KY 40290-1024 THE UPS STORE # 2154 WENDY M HILL 2916 NW BUCKLIN HILL RD SILVERDALE WA 98383 THE WALTERS NIXON GROUP, INC MIKE WALTERS 123 N UNION AVE STE 105 CRANFORD NJ 07016 THEODORE H. MANNHEIMER C/O NATIONAL FINANCIAL SERVICES LLC ADDRESS REDACTED THEODORE H. MANNHEIMER C/O NATIONAL FINANCIAL SERVICES LLC ADDRESS REDACTED THERIOT II, WILLIS JAMES ADDRESS REDACTED THERIOT, ALFRED JOSEPH ADDRESS REDACTED THIBAULT, CHARLES WILFRED ADDRESS REDACTED THIBODAUX REGIONAL MEDICAL CTR NORA TROSCLAIR PO BOX 1118 THIBODAUX LA 70302-1118 THIBODEAUX, COLLIN JAMES ADDRESS REDACTED THIBOLDEAUX, ADAM MASON ADDRESS REDACTED THOMAS A. DONOVAN C/O HILLTOP SECURITIES ADDRESS REDACTED THOMAS A. DONOVAN C/O HILLTOP SECURITIES ADDRESS REDACTED THOMAS BABIN THOMAS BABIN ADDRESS REDACTED THOMAS G HESS REVOCABLE TRUST C/O WELLS FARGO ADDRESS REDACTED THOMAS G HESS REVOCABLE TRUST C/O WELLS FARGO ADDRESS REDACTED THOMAS HOSPITAL ACCOUNTS RECEIVABLE 750 MORPHY AVE FAIRHOPE AL 36532 THOMAS PUMP AND MACHINERY INC CINDY JUNEAU-SMITH DEPT AT 952531 ATLANTA GA 31192-2531 THOMAS, ALFRED ADDRESS REDACTED THOMAS, ORLIN ADDRESS REDACTED THOMA-SEA MARINE CONSTR FAITH FILCE PO BOX 399 BOURG LA 70343 THOMPSON HINE LLP JOHN HENTON 3900 KEY CENTER 127 PUBLIC SQ CLEVELAND OH 44114-1291 THOMPSON, CALEB WAYNE ADDRESS REDACTED THOMPSON, DOUGLAS WAYNE ADDRESS REDACTED THOMPSON, NAIROBI A ADDRESS REDACTED THOMPSON, TONY L ADDRESS REDACTED THOMSEN, IAN JACOB ADDRESS REDACTED THOMSON WEST PO BOX 6292 CAROL STREAM IL 60197-6292 THRIFT, CLIFFORD B ADDRESS REDACTED TICKET SERVICOS S.A. KELLY ALAMEDA TOCANTINS NO. 125 20 A 23 ANDARES ALPHAVILLE BARUERI SP 6455 BRAZIL TIGER OFFSHORE RENTALS REBECCA WILLIAMS PO BOX 733252 DALLAS TX 75373 TILLMAN, MYKHEL GARVON ADDRESS REDACTED TIRADO ARRIAGA, JOSE OSCAR ADDRESS REDACTED TIRADO BERTOLDI, GILBERTO ADDRESS REDACTED TMF ROMANIA SRL MARIA PATRASCOIU 133 CALEA SERBAN VODA CENTRAL BUSINESS PARK GRD FL 4TH DIST BUCHAREST RM 40205 ROMANIA TNT USA INC DOROTHY MATUZA DEPT 781108 DETROIT MI 48278-1108 TOBRAS DISTRIBUIDORA MARIA GUEVARA RUA MIGUEL DE CERVANTES 215, CAMPOS ELISEOS RIO DE JANEIRO RJ 25225-762 BRAZIL TOKIO MARINE SEGURADORA SA CLARISSA TORRES RUA SAMPAIO VIANA 44 SAO PAULO SP 4004000 BRAZIL TOLEDO ZEPEDA, ALEJANDRO ADDRESS REDACTED TOMENY, JAMES RYAN ADDRESS REDACTED TONEY, BENJAMIN JAMES ADDRESS REDACTED TORMAG SA DE CV GABRIEL LOPEZ BENITO JUAREZ 15 MEXICO CITY DF 9500 MEXICO TORRES GOMEZ, LUIS MANUEL ADDRESS REDACTED TORRES NUNEZ, JORGE ADDRESS REDACTED TORRES RODRIGUEZ, ERICK GABRIEL ADDRESS REDACTED TRINIDAD & TOSL ENGINEERING LTD (TRINIDAD BOBBY DHANASAR 8-10 MAHARAJ AVENUE MARABELLA TOBAGO TOSTADO GUERRA, ROBERTO JESUS ADDRESS REDACTED TOTAL SAFETY US INC KAREN MAKIN-SUA RECIPIENT PO BOX 974686 DALLAS TX 75397-4686 TOTSCH, DANIEL EUGENE ADDRESS REDACTED TOTSCH, JEFFREY RYAN ADDRESS REDACTED TOUCHSTONE IMAGING CENTER OF P DESIREE FISHER PO BOX 116135 ATLANTA GA 30368-6135 TOUPS, ROBERT D. ADDRESS REDACTED TOURO INFIRMARY PO BOX 919279 DALLAS TX 75391-9279 TOVAL, ERICK JOEL ADDRESS REDACTED TOWER, MEGAN ELIZABETH ADDRESS REDACTED TOWERS WATSON CONSULTORIA LTDA DANIELLA OGIHARA AV DAS NACOES UNIDAS TORRE NORTE 2101 21 ANDAR SAO PAULO SP 04578 000 BRAZIL TOWNE, DAVID EDWARD ADDRESS REDACTED TOWNSEND, MICHAEL JOSEPH ADDRESS REDACTED TOYE, JOHN B ADDRESS REDACTED TRADEWINDS A/S ERIN MOORE 1010 WASHINGTON BLVD 2ND FLOOR STAMFORD CT 06901 TRAIGLE, PAUL E. ADDRESS REDACTED TRAINING RESOURCES LTD INC RAY ADDICOTT - SUA RECIP 1400 GRIZZLY PEAK BERKELEY CA 94708 TRANSFORMA GERENCIAMENTO GABRIEL REZENDE RUA DR BENEDITO CARLOS FERREIR N 2320 PARQUE AEROPUERTO MACAE RJ 27.946-720 BRAZIL TRANSITIONAL LEARNING CENTER JIM OSBORNE 1528 POSTOFFICE STREET GALVESTON TX 77550 TRANSMARE REGIANE RUA VINTE NOVA DE JULHO 255 BONSUCESSO RIO DE JANEIRO RJ 21043-041 BRAZIL TRANSMAZ TRANSPORTES E LOCACAO RENAN OR VIVIANE RUA JONAS MUSSI 385 SOL E MAR MACAE RJ 27940 550 BRAZIL

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 68 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 71 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country TRANSPORTADORA DANJAK LTDA LUIZ CARLOS AV SANTOS MOREIRA 726 MIRAMAR MACAE RJ 27940-550 BRAZIL TRANSPORTE MARITIMO BEIRA MAR CIRO OLIVEIRA RUA BENEDITO LACERDA 231 CE MACAE RJ 27913-000 BRAZIL CIUDAD DEL TRANSPORTES AEREOS PEGASO SANDRA LOPEZ MARENTES HANGAR NO 5 ZONA FEDERAL AEROPURTO INT CARMEN CM 24190 MEXICO TRAPAC INC DAVE BENDORF PO BOX 31001-0793 PASADENA CA 91110-0793 TRAPP CADILLAC CHEVROLET HEATHER BURTON 200 SOUTH HOLLYWOOD RD HOUMA LA 70360 TRASFOR SA SEBASIANO ZUMBINO VIA CANTONALE 11 6995 MOLINAZZO DI MONTEGGIO SWITZERLAND TRAUTNER, JAMES ANDREW ADDRESS REDACTED TRAVELERS PROPERTY CASUALTY COMPANY OF AMERICA 1 TOWER SQUARE HARTFORD CT 06183 TREDE, ZACHARY C ADDRESS REDACTED TREDINICH, RANDY G ADDRESS REDACTED TREJO GARCIA, EDGAR ADDRESS REDACTED TREMAIN, RAWLEIGH LEWIS ADDRESS REDACTED TRI CITY PIPE & MACHINE CHRISTINE FARIAS PO BOX 487 PATTERSON LA 70392 TRIBUNAL JUSTICA DO ESTADO D ACCOUNTS RECEIVABLE AV ERASMO BRAGA 115 CENTRO RIO DE JANEIRO RJ 200020-903 BRAZIL PRAIA TRIBUNAL REGIONAL DO TRABALHO AVENIDA DA NOSSA SENHORA GLO 1181, 7 E 8 ANDARES CAMPISTA MACAE RJ 27923-215 BRAZIL TRINIDAD & TRINIDAD INSPECTION SERVICES NERISSA MOHAN CORNER OF PACIFIC AVENE CARIBBEAN DRIVE PT LISAS TOBAGO TRINIDAD & TRINTOKIL (TRINIDAD) NNEKA KING 87-80 MANJACK STREET VISTABELLA SAN FERNANDO TOBAGO TRIPLE SON WHOLESALE TIMBERS CHERYL DUET PO BOX 338 CUT OFF LA 70345 TRIPLE-S INC. RAUL PO BOX 71548 SAN JUAN PR 00936-8648 PUERTO RICO TROTTER, RICHARD MASON ADDRESS REDACTED TROUTMAN, TRENT ADDRESS REDACTED TRUMPETT LLC ROBBIE VITRANO 2803 ST PHILLIP STREET NEW ORLEANS LA 70119 TRUNZO, SCOTT ERNEST ADDRESS REDACTED TUBLE, PIERRE A ADDRESS REDACTED TUCKER, CHRISTOPHER A ADDRESS REDACTED TUFFIAS, BENJAMIN DANIEL ADDRESS REDACTED TULANE UNIVERSITY HOSPITAL PO BOX 402872 ATLANTA GA 30384-2872 TULANE UNIVERSITY MED. GROUP PO BOX 54431 NEW ORLEANS LA 70154 TULLOCH, JAMES WILLIAMS ADDRESS REDACTED TURNER, HARRY E ADDRESS REDACTED TURNER, JOSHUA M ADDRESS REDACTED TURNER, RAEKWKON MALIK ADDRESS REDACTED TURNER, STEVEN DOUGLAS ADDRESS REDACTED TWIN CITY FIRE INSURANCE COMPANY 1 HARTFORD PLAZA SUITE 1685 HARTFORD CT 06115 TYLER HINCKLEY ADDRESS REDACTED TYSON JR, BOBBY R ADDRESS REDACTED TYSON, BOBBY R ADDRESS REDACTED U. S. COAST GUARD-OVERSEAS INS ROB HOLZMAN USCG NO - ROB HOLZMAN 200 HENDEE STREET NEW ORLEANS LA 70114 U.S. ATTORNEY'S OFFICE SOUTHERN DISTRICT OF TEXAS 1000 LOUISIANA, STE. 2300 HOUSTON TX 77002 U.S. COAST GUARD PO BOX 531030 ATLANTA GA 30353-1030 OCCUPATIONAL SAFETY AND HEALTH U.S. DEPARTMENT OF LABOR ADMINISTRATION 200 CONSTITUTION AVENUE, NW ROOM NUMBER N3626 WASHINGTON DC 20210 U.S. DISTRICT COURT BOSTON LUCIEN ADAM 1 COURTHOUSE WAY SUITE 2300 BOSTON MA 02210 U.S. ENVIRONMENTAL PROTECTION AGENCY REGION 3 1650 ARCH STREET PHILADELPHIA PA 19103-2029 U.S. ENVIRONMENTAL PROTECTION AGENCY REGION 6 1201 ELM STREET, SUITE 500 DALLAS TX 75270 U.S. SPECIALTY INSURANCE COMPANY 13403 NORTHWEST FREEWAY HOUSTON TX 77040 ULINE INC. CRC PAYMENTS-SUA RECIPIENT PO BOX 88741 CHICAGO IL 60680-1741 PLEASANT ULINE, INC NANCY L. HALCOM 12575 ULINE DRIVE PRAIRIE WI 53158 ULINE, INC. ULINE SHIPPING SUPPLIES PO BOX 88741 CHICAGO IL 60680 ULLOA OSUNA, JESUS ANTONIO ADDRESS REDACTED ULSTEIN BELGA MARINE SERVICOS FRANCISCO DE ASSISS RUA CURUZU 58 SAO CRISTOVAO RIO DE JANEIRO RJ 20920 440 BRAZIL UNALASKA FIRE DEPARTMENT ARIEL HERNANDEZ PO BOX 610 UNALASKA AK 99685 UNCLAIMED PROPERTY DIVISION OF THE TEXAS C/O OFFICE OF THE ATTORNEY GENERAL OF TEXAS COMPTROLLER OF PUBLIC ACCOUNTS BANKRUPTCY & COLLECTIONS DIVISION ATTN: JASON B. BINFORD PO BOX 12548 MC008 AUSTIN TX 78711-2548 UNIMARINE LLC MAGGIE BELLONE 151 BODMAN PLACE SUITE 201 RED BANK NJ 07701 UNIMED SEGUROS SAUDE SA RONALD SANTOS OF KNTS AL MINISTRO ROCHA AZEVEDO 366 SAO PAULO SP BRAZIL UNITED CAB INC ASHLIE OR JAMI 1634 EUTERPE STREET NEW ORLEANS LA 70130 UNITED SPECIALTY INSURANCE COMPANY 1900 L DON DODSON DRIVE BEDFORD TX 76021 UNITED STATES TREASURY C/O INTERNAL REVENUE SERVICE INTERNAL REVENUE SERVICE CINCINNATI OH 45999-0009 UNITED UATP PROGRAM CUSTOMER SERVICE PO BOX 733229 DALLAS TX 75373-3229 UNITED VISION LOGISTICS TAMMY LORMAND - SUA RECIPIENT PO BOX 975357 DALLAS TX 75397-5357 UNIVERSAL COMONE LLC DERON SCARABIN - SUA RECIPIENT PO BOX 1472 GRETNA LA 70054 UNIVERSITY MEDICAL CENTER KIMBERLY DASTE PO BOX 919133 UMCMC - HOSPITAL COMMERCIAL PAY - HCL DALLAS TX 75391-9133 UNIVERSITY OF MINNESOTA PHYSIC CHERYL PO BOX 860217 MINNEAPOLIS MN 55486-0217

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 69 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 72 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country UNIVERSITY OF MN HEALTH CLIN CHERYL PO BOX 860493 MINNEAPOLIS MN 55486-0493 UNUM LIFE INSURANCE COMPANY OF AMERICA NICOLE LAICHE JEANFREAU PO BOX 406946 ATLANTA GA 30384-6946 UPS KATIE ENGLISH PO BOX 7247-0244 PHILADELPHIA PA 19170-0001 UPS SUPPLY CHAIN SOLUTIONS KY 28013 NETWORK PLACE CHICAGO IL 60673-1280 UPSHAW, MICHAEL SHAYNE ADDRESS REDACTED UPSTREAM A S DEBRA KROHN 5151 SAN FELIPE SUITE 1380 HOUSTON TX 77056 UPTIME AS JUAN ANONIO LOPEZ UTTIEN HUNDSVAERGATA 8 AALESUND N-6008 NORWAY UPTRONIX INC MEDIA WHITE PO BOX 903 WOODSTOCK GA 30188 URGENTMED INC SUSAN GUEVARA 2337 SOUTH UNIVERSITY DRIVE DAVIS FL 33324-5842 URIBE ESTRADA, BENITO ENCARNACION ADDRESS REDACTED UROLOGY OF VIRGINIA PLLC LEIGHSA MARIADO 225 CLEARFIELD AVENUE VIRGINIA BEACH VA 23462 US CHAMBER OF COMMERCE 1615 H STREET NW WASHINGTON D C DC 20062 US COAST GUARD ART/OTHERS VIOLA HYDE PO BOX 979119 ST. LOUIS MO 63197-9000 US CUSTOMS & BORDER PROTECTION MORGAN CITY, LA PORT DIRECTOR PO BOX 979126 ST LOUIS MO 63197-9000 US DEPT OF HEALTH AND HUMAN SE US DEPT OF HEALTH AND HUMAN SERVICES 200 INDEPENDENCE AVENUE, S.W. WASHINGTON DC 20201 US HEALTHWORKS MEDICAL GRP VERONICA ALEJO PO BOX 50046 LOS ANGELES CA 90074-0046 US LEGAL SUPPORT INC DESIREE BENNETT PO BOX 4772-14 HOUSTON TX 77210-4772 US SECRETARY OF THE TREASURY COMMISSIONER OF CBP 1300 PENNSYLVANIA AVE NW WASHINGTON DC 20229 USAP TEXAS PO BOX 840853 DALLAS TX 75284 USCANGA FERNANDEZ, YOSHIR MOISES ADDRESS REDACTED USCG VESSEL INSPECTION PO BOX 531030 ATLANTA GA 30353-1030 UT PHYSICIANS DORA PO BOX 301173 DALLAS TX 75303-1173 UTMB AT GALVESTON PO BOX 660120 DEPT 730 DALLAS TX 75266-0120 UTMB FACULTY GROUP PRACTICE RACHEL DEPT 710 PO BOX 650859 DALLAS TX 75265-0859 UWE RIELAGE ADDRESS REDACTED CARLOS RENATO GUERRA DA FONSECA, UWE RIELAGE GUILHERME BASTOS NUNES BATISTA ADDRESS REDACTED VACCO INC LAURA SMITH PO BOX 8032 HOUMA LA 70361 VADER, LESLEY A. ADDRESS REDACTED VALDES VIZCARRA, ROBERTO ADDRESS REDACTED VALDEZ GONZALEZ, EDUARDO ADDRESS REDACTED VALDEZ RODRIGUEZ, JOSE SAMUEL ADDRESS REDACTED VALENCIA CAMACHO, ALEXIS JOE ADDRESS REDACTED VALENTI, MICHAEL F ADDRESS REDACTED VAN HORN, KURT A ADDRESS REDACTED VAN PATTEN, BENJAMIN PRESTON ADDRESS REDACTED VANCE, ROY E ADDRESS REDACTED VANE BROTHERS MARINE SAFETY ED GRABOWSKI 2100 FRANKFURST AVENUE BALTIMORE MD 21226 VANN VIRGINIA CENTER FOR ORTHO GRETTA 230 CLEARFIELD AVE SUITE 124 VIRGINIA BEACH VA 23462 VANUATU MARITIME SERVICES MAGDALENA MAROICK 39 BROADWAY SUITE 2020 NEW YORK NY 10006 VAQUERA, JUAN JOSE ADDRESS REDACTED VARD MARINE US INC CINTHYA BERNHARDT 1880 S. DAIRY ASHFORD #425 HOUSTON TX 77077 VARGAS CORSO, FAUSTINO ADDRESS REDACTED VARGAS FUENTES, RAFAEL ADDRESS REDACTED VARGAS MENDEZ, JOSE ADDRESS REDACTED VARGAS TIRADO, ANDREA PAULETT ADDRESS REDACTED UNITED VARIOUS LLOYDS SYNDICATES C/O LLOYD'S OF LONDON 1 LIME STREET LONDON EC3M 7HA KINGDOM VASQUEZ LARA, VICTOR HUGO ADDRESS REDACTED VAZQUEZ GARCIA, MAXIMILIANO AARON ADDRESS REDACTED VAZQUEZ MONTES, DANIEL ADDRESS REDACTED VAZQUEZ ROMAN, VICENTE ADDRESS REDACTED VAZQUEZ ZUNIGA, HERBY ARTURO ADDRESS REDACTED VEDDER PRICE ERIC MARCOTTE 222 NORTH LASALLE STREET 24TH FLOOR CHICAGO IL 60601 VEGA CORONADO, APOLO CESAR ADDRESS REDACTED VEGA LOPEZ, APOLO CESAR ADDRESS REDACTED VEIGA, VINICIUS RAMOS ADDRESS REDACTED VELARDE HUMBERT, MARCO ANTONIO ADDRESS REDACTED VELARDE RUIZ, NATHANAEL ADDRESS REDACTED VELARDE ZATARRAIN, PEDRO ADDRESS REDACTED VELAZQUEZ HERNANDEZ, JUAN ARTURO ADDRESS REDACTED VELAZQUEZ SOSA, ROBERTO JESUS ADDRESS REDACTED VELEV, BOBBY T ADDRESS REDACTED VENA CONTRACTA RIO INDUSTRIAS CRISTINA LIMA RUA MARIA RODRIGUES N 52 FRENTE OLARIA RIO DE JANEIRO RJ 21031 490 BRAZIL VENABLE LLC MICHAEL ROBERTS PO BOX 62727 BALTIMORE MD 21264-2727 VENTURA GALINDO, RAFAEL ADDRESS REDACTED VERIFICATIONS INC SUA RECIPIENT PO BOX 742808 ATLANTA GA 30374-2808 VERIPOS (US) INC KRISTINA CHRISTOPHER 15990 N BARKERS LANDING SUITE 150 HOUSTON TX 77079 VERIPOS BRASIL LTDA LORAINE SANTOS AVENIDA DOS BANDEIRANTES 2600, SALAL 101 A 110 REDUTO DA PAZ 28897-060 BRAZIL

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country VERIZON #111629546 PO BOX 64498 BALTIMORE MD 21264-4498 VERIZON WIRELESS SERVICES LLC DBA VERIZON WIRELESS PO BOX 660108 VERIZON 282627907-00001 DALLAS TX 75266-0108 VERMEULEN, BENJAMIN THOMSON ADDRESS REDACTED VERT ALPINISMO INDUSTRIAL LTDA ANDERSON LUIS SILVA DE OLIVEIR ESTRADA DO RIO GRANDE RIO DE JANEIRO RJ 22720-010 BRAZIL VERTREES, JOHN F ADDRESS REDACTED UNITED VESSELSVALUE MATT ANTONY 149 HAMMERSMITH ROAD LYNC HOUSE LONDON W14 0QL KINGDOM VIANA OFFSHORE COMERCIO LTDA TERRA DUQUE RUA PASSAGARDA 15 NOVO CAVALEIROS MACAE RJ 27910 320 BRAZIL VIASAT 6155 EL CAMINO REAL CARLSBAD CA 92009 VICENTE GARCIA, FRANCISCO ADDRESS REDACTED VICENTE ROJAS, PEDRO ADDRESS REDACTED VICK, AARON PAUL ADDRESS REDACTED VICTORIO REAL, FRANCISCO ALEJANDRO ADDRESS REDACTED VIDALES, SERGIO ANDRES ADDRESS REDACTED VIEIRA, RONILSON COSTA ADDRESS REDACTED VIEIRA, THALIA LIMA ADDRESS REDACTED VIERA, MARTIN ANTONIO ADDRESS REDACTED VIGOR ALASKA, LLC CHEMAINE THOMAS PO BOX 4367 PORTLAND OR 97208 VIGOR MARINE LLC SHERRY CHRISTOPHERSON PO BOX 4367 PORTLAND OR 97208 VIKING LIFE-SAVING - BRAZIL MAURICE BRAGARD AV RIO BRANCO 45 SALA 1904 CENTRO RIO DE JANEIRO RJ 20090 003 BRAZIL CIUDAD DEL VIKING LIFE-SAVING EQUIP MEXIC LUIS ANGEL VERA AVE LOPEZ MATEOS COL REV 84 CARMEN CM 21420 MEXICO VIKING LIFE-SAVING EQUIPMENT ED HOFF 11255 NW 106 STREET SUITE 1 MIAMI FL 33178 VILLALBA VALLEJO, MISAEL ALFONSO ADDRESS REDACTED VILLELA GALINDO, LUIS MIGUEL ADDRESS REDACTED VILLERE'S FLORIST DONNA VILLERE 750 MARTIN BEHRMAN METAIRIE LA 70005 VINCENT, KENNETH W ADDRESS REDACTED VINCIQUERRA, CHRISTIAN MICHAEL ADDRESS REDACTED CIUDAD DEL VINILES Y DISENOS GRAFICOS YESSICA LEON CALLE CONSTELACION ACUARIO MZ D LT 12, COLONIA SANTA RITA II CARMEN CAMPECHE MEXICO VINSON AND ELKINS JOSEPH DILG, ATTY. PO BOX 301019 DALLAS TX 75303-1019 VIOLANTE GONZALEZ, BERNARDO ADDRESS REDACTED VIOLANTE ROBLES, MARCO ANTONIO ADDRESS REDACTED VIRGINIA BEACH AMBULATORY SURG ANGIE 1700 WILL-O-WISP DRIVE VIRGINIA BEACH VA 23454 VIRGINIA INSTITUTE OF SPORTS 1849 OLD DONATION PARKWAY VIRGINIA BEACH VA 23454 VIRGINIA PILOT ASSOCIATION KAREN SMITH 3329 SHORE DRIVE VIRGINIA BEACH VA 23451 VISION COMMUNICATIONS CUSTOMER SERVICE PO BOX 188 LAROSE LA 70373 VISION SERVICE PLAN MARISA CHAPA PO BOX 742788 LOS ANGELES CA 90074-2788 VITAE DA PENHA ASSESSORIA EMP LUCIANA GAUDIO AVENIDA GETULIO VARGAS ARARUAMA RIO DE JANEIRO RJ BRAZIL VITAL SIGNS WENDELL THERIOT - SUA RECIPIEN 511 MAIN STREET, SUITE B PATTERSON LA 70392 VITORIA AMBIENTAL ENGENHARIA VICTOR AMIM RODOVIA ES 351 SN KM 10 PUTIRI SERRA ES 29176-015 BRAZIL VIVAS BALAN, JAIME LAMBERTO ADDRESS REDACTED VIVO MONICA AZEVEDO AV ENGENHEIRO LUIZ CARLOS BERRINI, 1376, E SAO PAULO SP 04571-936 BRAZIL VIZCARRA CANIZALES, CARLOS ANTONIO ADDRESS REDACTED VKS FILTROS COMERCIO MARESE BARBOSA RUA COIMBRA 85 MACAE RJ 21011-620 BRAZIL VOIGT-ABERNATHY SALES CORP DANIELLE DYKES PO BOX 100276 BIRMINGHAM AL 35210 VTORUSHIN, RUSLAN ADDRESS REDACTED W & T OFFSHORE INC JAYMIE DUQUETTE 9 E GREENWAY PLAZA SUITE 300 HOUSTON TX 77046 W AND O SUPPLY (SEATTLE) BRUCE MCLACHLIN PO BOX 933067 ATLANTA GA 31193-3067 W AND O SUPPLY INC PAMELA THORNTON SUA RECIPIENT PO BOX 933067 ATLANTA GA 31193-3067 WAGEWORKS INC LAVEDA LEWIS PO BOX 45772 SAN FRANCISCO CA 94145-0772 WAHEEDA MITHANI MD PLLC JENNIFER 3820 HWY 365 SUITE 200 PORT ARTHUR TX 77642 WAKEFIELD, KEVIN B ADDRESS REDACTED WALGREEN CO. PO BOX 90484 CHICAGO IL 60696-0484 WALKER, CODY HUNTER ADDRESS REDACTED WALKER, JAMES DALE ADDRESS REDACTED WALKER, KENT D ADDRESS REDACTED WALKER, TIMOTHY D ADDRESS REDACTED WALKER, TREVOR LYLE ADDRESS REDACTED WALKER, ZADDIS F ADDRESS REDACTED WALL, JULIUS MICHAEL ADDRESS REDACTED WALLACE, DUSTIN LIEBIG ADDRESS REDACTED WALTHALL OIL COMPANY CATHY LOWERY PO BOX 1203 MACON GA 31202-1203 WALTON, JOHN WESLEY ADDRESS REDACTED WALZ, ANDREW JAMES ADDRESS REDACTED WARD LEONARD CHRISTINE ARNAUD 2534 CUMMINS ROAD HOUMA LA 70363 WARD SPIVEY ADDRESS REDACTED WARD SPIVEY C/O BRAUD & GALLAGHER ADDRESS REDACTED WARD, DERRICK S ADDRESS REDACTED

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 71 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 74 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country WARD, JORDAN ROBERT ADDRESS REDACTED WARD, MICHAEL PATRICK ADDRESS REDACTED WARD, TYLER WALLACE ADDRESS REDACTED WARD, WILLIAM D. ADDRESS REDACTED WARE, CASEY J ADDRESS REDACTED WARREN, ARMAND LEVARON ADDRESS REDACTED WARREN, CURTIS LEO ADDRESS REDACTED WARREN, MATTHEW WESLEY ADDRESS REDACTED WARTSILA BRASIL LTDA ARTURO CORTEZ RUA CARLOS GOMES, 23 BARRETO NITEROI RIO DE JANEIRO RJ 20910 060 BRAZIL WARTSILA DYNAMIC POSITIONING DEBBI POYNTER 11710 N GESSNER RD SUITE A HOUSTON TX 77064 TEJERIA WARTSILA MEXICO SA DE CV CLARA ANDRADE LOTE 32 MANZANA 19 ESQ ARRAYANES VERCRUZ 91697 MEXICO WARTSILA NORTH AMERICA MARIA EGEA DEPT 2450 PO BOX 122450 DALLAS TX 75312-2450 WARTSILA VOYAGE AMERICAS INC PHILIP NEWMARCH-SUA RECIEPIENT 751 NORTH DRIVE SUITE 12 MELBOURNE FL 32934 WASHINGTON CHAIN AND SUPPLY CHARLENE KNIGHT DEPT 2351 PO BOX 122351 DALLAS TX 75312-2351 WASHINGTON DEPARTMENT OF ECOLOGY PO BOX 47600 OLYMPIA WA 98504-7600 WASHINGTON MARITIME TUWEI YEBEI 410 SEVERN AVENUE STE 310 ANNAPOLIS MD 21403 WASHINGTON STATE MARITIME CYNTHIA REED 100 WEST HARRISON STE S560 SEATTLE WA 98119-4135 WASHINGTON, ISAIAH W ADDRESS REDACTED WASILO, KARL HUGH ADDRESS REDACTED WASTE AUDITORS INC MELISSA MALHORIN PO BOX 53391 LAFAYETTE LA 70505 WATERMAN, ANDREW S ADDRESS REDACTED WATERSTONE AT SPRINGFIELD ACCOUNTS RECEIVABLE SARA EAVES 4141 EAST 15TH ST PANAMA CITY FL 32404 WATSON FARLEY AND WILLIAMS LLP ASHLEY PALUSZEK 250 WEST 55TH STREET NEW YORK NY 10019 WAUTAUGA RADIOLOGICAL SERVICES 400 SHADOWLINE DRIVE STE 201A BOONE NC 28607 WEAVER, BRANDON M ADDRESS REDACTED WEAVER, RONALD JOSEPH ADDRESS REDACTED WEBB, ZACHARY MARK ADDRESS REDACTED WEEKES, SHAWN LAURIE OURL ADDRESS REDACTED WEGMANN DAZET & COMPANY CARY HARO 111 VETERANS BLVD, STE 800 METAIRIE LA 70005 WEHBEY, CHRISTIAN WOLFGANG ADDRESS REDACTED WELIN LAMBIE 18 RIDGECREST DRIVE BRIDGEWATER NOVA SCOTIA B3V3V CANADA WELLS FARGO BANK MARISOL LUNA WF8113 PO BOX 1450 MINNEAPOLIS MN 55485-8113 WELLS FARGO BANK NA 1000 LOUISIANA ST MAC T0002-090 HOUSTON TX 77002 WELLS FARGO BANK, N.A. 1525 W WT HARRIS BLVD MAC D1109-019 CHARLOTTE NC 28262 WELLS FARGO BANK, N.A. 1740 BROADWAY MAC C 7300-034 DENVER CO 80203 WELLS TECHNOLOGY INC WENDY KNUDSON 4885 WINDSOR CT NW BEMIDJI MN 56601-7659 WENDEL, RYAN T ADDRESS REDACTED WERNECK, HEVERTHON DE PAULA ADDRESS REDACTED WESCO DISTRIBUTION KATHY HARDIN PO BOX 676780 DALLAS TX 75267-6780 WESLEY, LANCE ANTHONY ADDRESS REDACTED WEST BANK SURGERY CENTER LOUISE SMALLPAGE 1A BURTON HILLS BLVD NASHVILLE TN 37215 WEST COAST TRADUCOES LTDA MIGUEL RABAT JR RUA ADALBERTO FERREIRA 46 APT 302 LEBLON RIO DE JANEIRO RJ 22441-040 BRAZIL WEST FL MEDICAL CENTER CLINIC CAROLYN PIPKIN PO BOX 30017 TAMPA FL 33630-3017 WEST FLORIDA HOSPITAL DAVID WILSON PO BOX 402845 ATLANTA GA 30384-2845 WEST FLORIDA SPECIALTY PHY PO BOX 402609 ATLANTA GA 30384-2609 WEST GROUP TREINAMENTOS DANIELLE QUEIROZ R MARECHAL DEODORA 421 MACAE RJ 27.910-310 BRAZIL WEST ISLE URGENT CARE DR. ZOMPA 2027 61ST STREET GALVESTON TX 77551-1401 WEST JEFFERSON INDUSTRIAL MED 107 WALL BLVD GRETNA LA 70056 WEST JEFFERSON MEDICAL CENTER 1101 MEDICAL CENTER BLVD. MARRERO LA 70072 WEST LLC CONTRACTS & BILLING TEAM PO BOX 780700 PHILADELPHIA PA 19178-0700 WEST MARINE PRO ACCOUNTS RECEIVEABLE PO BOX 50060 WATSONVILLE CA 95077-5060 WEST METRO AUDIOLOGICAL SPEC CLAUDIA HAWLEY 5641 ZUMBRA DR SUITE 111 EXCELSIOR MN 55331 WEST SOUND EMERGENCY PHYSICIAN PO BOX 95249 OKLAHOMA CITY OK 73143-5249 WEST, CHRISTOPHER SCOTT ADDRESS REDACTED WESTBAY NAPA AUTO PARTS GINGER HALL - SUA RECIPIENT 2610 SE MILE HILL DRIVE PORT ORCHARD WA 98366 WESTCHESTER FIRE INSURANCE COMPANY C/O CHUBB TWO RIVERWAY, SUITE 900 HOUSTON TX 77056 WESTERN METER JEFF KURTH 1006 EAST EDNA PLACE COVINA CA 91724 WESTERN TOWBOAT COMPANY KRISTIN 617 NW 40TH STREET SEATTLE WA 98107 WESTSHORE DO BRASIL CORRECTORA CAMILA LOPES AV RIO BRANCO 26, SU RIO DE JANEIRO RJ 20090-001 BRAZIL WFC, INC 309 LA RUE FRANCE SUITE 101 LAFAYETTE LA 70508 WHEELHOUSE ELECTRONICS OF LA CATHY MUSTACCHIA-SUA RECIPIENT PO BOX 342 PARADIS LA 70080 WHITE COAST EMERGENCY PHYSICIA PAT 1000 RIVER RD STE 100 CONSOHOCKEN NV 19428-2439 WHITE MACKILLOP & GALLANT P.C. VICKI HOOD 2200 WEST LOOP SOUTH SUITE 1000 HOUSTON TX 77027 WHITE, CASSANDRA LYNNE ADDRESS REDACTED WHITE, DYLAN JOSEPH ADDRESS REDACTED WHITE, JORDAN THOMAS ADDRESS REDACTED WHITE, MATTHEW KELLY ADDRESS REDACTED WHITE, TIMOTHY JAMES ADDRESS REDACTED WHITEBOX ADVISORS LLC SCOTT SPEKEN 3033 EXCELSIOR BLVD STE 500 MINNEAPOLIS MN 55416-4682

In re: Hornbeck Offshore Services, Inc., et al. Case No. 20-32679 (DRJ) Page 72 of 75 Case 20-32679 Document 310 Filed in TXSB on 09/18/20 Page 75 of 80

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country WHITEBOX ASYMMETRIC PARTNERS, LP C/O WHITEBOX ADVISORS ATTN: SCOTT SPECKEN 3033 EXCELSIOR BLVD, SUITE 300 MINNEAPOLIS MN 55416-4675 WHITEBOX ASYMMETRIC PARTNERS, LP C/O WHITEBOX ADVISORS, LLC ATTN: SCOTT SPECKEN 3033 EXCELSIOR BLVD, SUITE 300 MINNEAPOLIS MN 55416-4676 WHITEBOX CAJA BLANCA FUND, LP C/O WHITEBOX ADVISORS, LLC 280 PARK AVE, SUITE 43W NEW YORK NY 10017 WHITEBOX CAJA BLANCA FUND, LP C/O WHITEBOX ADVISORS, LLC 3033 EXCELSIOR BLVD STE 500 MINNEAPOLIS MN 55416-4682 WHITEBOX CAJA BLANCA FUND, LP C/O WHITEBOX ADVISORS, LLC ATTN: SCOTT SPECKEN 3033 EXCELSIOR BLVD, SUITE 300 MINNEAPOLIS MN 55416-4677 WHITEBOX CREDIT PARTNERS, LP C/O WHITEBOX ADVISORS ATTN: SCOTT SPECKEN 3033 EXCELSIOR BLVD STE 500 MINNEAPOLIS MN 55416-4682 WHITEBOX CREDIT PARTNERS, LP C/O WHITEBOX ADVISORS, LLC 280 PARK AVE, SUITE 43W NEW YORK NY 10017 WHITEBOX CREDIT PARTNERS, LP C/O WHITEBOX ADVISORS, LLC 3033 EXCELSIOR BLVD STE 500 MINNEAPOLIS MN 55416-4682 WHITEBOX CREDIT PARTNERS, LP C/O WHITEBOX ADVISORS, LLC ATTN: SCOTT SPECKEN 3033 EXCELSIOR BLVD, SUITE 500 MINNEAPOLIS MN 55416-4678 WHITEBOX GT FUND, LP C/O WHITEBOX ADVISORS ATTN: SCOTT SPECKEN 3033 EXCELSIOR BLVD, SUITE 300 MINNEAPOLIS MN 55416-4675 WHITEBOX GT FUND, LP C/O WHITEBOX ADVISORS, LLC 280 PARK AVE, SUITE 43W NEW YORK NY 10017 WHITEBOX GT FUND, LP C/O WHITEBOX ADVISORS, LLC 3033 EXCELSIOR BLVD STE 500 MINNEAPOLIS MN 55416-4682 WHITEBOX GT FUND, LP C/O WHITEBOX ADVISORS, LLC ATTN: SCOTT SPECKEN 3033 EXCELSIOR BLVD, SUITE 300 MINNEAPOLIS MN 55416-4679 WHITEBOX MULTI-STRATEGY PARTNERS, LP C/O WHITEBOX ADVISORS ATTN: SCOTT SPECKEN 3033 EXCELSIOR BLVD STE 500 MINNEAPOLIS MN 55416-4682 WHITEBOX MULTI-STRATEGY PARTNERS, LP C/O WHITEBOX ADVISORS, LLC 280 PARK AVE, SUITE 43W NEW YORK NY 10017 WHITEBOX MULTI-STRATEGY PARTNERS, LP C/O WHITEBOX ADVISORS, LLC 3033 EXCELSIOR BLVD STE 500 MINNEAPOLIS MN 55416-4682 WHITEBOX MULTI-STRATEGY PARTNERS, LP C/O WHITEBOX ADVISORS, LLC ATTN: SCOTT SPECKEN 3033 EXCELSIOR BLVD, SUITE 300 MINNEAPOLIS MN 55416-4680 WHITEBOX RELATIVE VALUE PARTNERS, LP C/O WHITEBOX ADVISORS ATTN: SCOTT SPECKEN 3033 EXCELSIOR BLVD STE 500 MINNEAPOLIS MN 55416-4682 WHITEBOX RELATIVE VALUE PARTNERS, LP C/O WHITEBOX ADVISORS, LLC 280 PARK AVE, SUITE 43W NEW YORK NY 10017 WHITEBOX RELATIVE VALUE PARTNERS, LP C/O WHITEBOX ADVISORS, LLC 3033 EXCELSIOR BLVD STE 500 MINNEAPOLIS MN 55416-4682 WHITEBOX RELATIVE VALUE PARTNERS, LP C/O WHITEBOX ADVISORS, LLC ATTN: SCOTT SPECKEN 3033 EXCELSIOR BLVD, SUITE 500 MINNEAPOLIS MN 55416-4682 WHITTEMORE, CHANCE LEE ADDRESS REDACTED WHOLESALE PUMP & SUPPLY INC LANCE BABST PO BOX 1079 SHREVEPORT LA 71163 WHOOLERY, DAVID S ADDRESS REDACTED WILDEY, WILLIAM W ADDRESS REDACTED WILEY, MATTHEW JESUS ADDRESS REDACTED WILHELMSEN SHIPS SERVICE CHERYL CHEE-GOMEZ 9400 NEW CENTURY DRIVE PASADENA TX 77507 WILHELMSEN SHIPS SRV BRASIL MARCELO LOPES RUA BISPO LACER 61 E 67 DEL CASTILHO RIO DE JANEIRO RJ 27920 BRAZIL WILHELMSEN SHIPS SVC NORWAY MARIAN DANAILOV STRANDVN 20 PO BOX 33 LYSAKER NO-1324 NORWAY WILHITE, TERRY D. ADDRESS REDACTED WILKERSON, MATTHEW SHANE ADDRESS REDACTED WILKERSON, SEDRICK DELANEY ADDRESS REDACTED WILLHITE, JACKSON D ADDRESS REDACTED WILLIAM EITZEN C/O HILLTOP SECURITIES ADDRESS REDACTED WILLIAM EITZEN C/O HILLTOP SECURITIES ADDRESS REDACTED WILLIAMS LITIGATION LLC CHRISTOPHER L WILLIAMS 639 LOYOLA AVE SUITE 1850 NEW ORLEANS LA 70113 WILLIAMS, CARLOS LAMAR ADDRESS REDACTED WILLIAMS, GERY MACK ADDRESS REDACTED WILLIAMS, JOHN JUSTIN ADDRESS REDACTED WILLIAMS, KRISTAL ANN ADDRESS REDACTED WILLIAMS, KYLE LESTER ADDRESS REDACTED WILLIAMS, MARK ADDRESS REDACTED WILLIAMS, MARTIN RAY ADDRESS REDACTED WILLIAMS, NICHOLAS C ADDRESS REDACTED WILLIAMS, NICHOLAS D ADDRESS REDACTED WILLIAMS, NOEL W ADDRESS REDACTED WILLIAMS, ROBERT GERALD ADDRESS REDACTED WILLIAMSON, CHARLES F ADDRESS REDACTED WILLIAMSON, JUSTIN LEE ADDRESS REDACTED WILLIAMSON, SETH EDWIN ADDRESS REDACTED WILLIS TOWERS WATSON US LLC ZACHARY GEORGESON 233 SOUTH WACKER DRIVE CHICAGO IL 60606 WILLIS, CHARLES DAVID ADDRESS REDACTED WILLIS, SHUNMANIQUE ANTONIO ADDRESS REDACTED WILMINGTON SAVINGS FUND SOC PATRICK J. HEALY WSFS BANK CENTER 500 DELAWARE STREET WILMINGTON DE 19801 WILMINGTON TRUST N.A. MEGHAN MCCAULEY; JEFF ROSE 50 SOUTH SIXTH STREET SUITE 1290 MINNEAPOLIS MN 55402 WILMINGTON TRUST, NATIONAL ASSOCIATION 50 SOUTH SIXTH STREET, SUITE 1290 MINNEAPOLIS MN 55402 WILMINGTON TRUST, NATIONAL ASSOCIATION ATTN: DANIELLA WEBER, CLIENT ADMINISTRATOR 50 SOUTH SIXTH STREET, SUITE 1290 MINNEAPOLIS MN 55402 WILMINGTON TRUST, NATIONAL ASSOCIATION ATTN: NIKKI KROLL, BANKING OFFICER 50 SOUTH SIXTH STREET, SUITE 1290 MINNEAPOLIS MN 55402 WILMINGTON TRUST, NATIONAL ASSOCIATION C/O COLE SCHOTZ P.C. ATTN: MICHAEL D. WARNER 301 COMMERCE STREET SUITE 1700 FORT WORTH TX 76102 ATTN: JAYME T. GOLDSTEIN AND WILMINGTON TRUST, NATIONAL ASSOCIATION C/O STROOCK & STROOCK & LAVAN LLP GABRIEL SASSON 180 MAIDEN LANE NEW YORK NY 10038-4982 WILMINGTON TRUST, NATIONAL ASSOCIATION MEGHAN MCCAULEY; JEFF ROSE 50 SOUTH SIXTH STREET, SUITE 1290 MINNEAPOLIS MN 55402 WILSON WALTON INTERNATION LENA GOUDWIN - SUA RECIPIENT 3349 ROUTE 138 BUILDING C STE E WALL NJ 07719 WILSON, CHARLES EDWIN ADDRESS REDACTED WILSON, DEANGELO DERRELL ADDRESS REDACTED WILSON, DONALD STANTON ADDRESS REDACTED WILSON, TONY P ADDRESS REDACTED

WINDERMERE IRELAND FUND PLC C/O ARISTEIA CAPITAL LLC ATTN: WILLIAM TECHAR; JASON KROLL ONE GREENWICH PLAZA, 3RD FLOOR GREENWICH CT 06830 WINSTEAD PC COLLECTIONS DEPT - SUA RECIPIE 2728 N. HARWOOD STREET DALLAS TX 75201

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country WINSTON & STRAWN LLP CLAUDIA CASON 36235 TREASURY CENTER CHICAGO IL 60694-6200 WINSYSTEMS, INC GEORGE PO BOX 121361 ARLINGTON TX 76012 WINTERS, ROBERT CHARLES ADDRESS REDACTED WIRSTROM, DENNIS E ADDRESS REDACTED WISE, ADAM R ADDRESS REDACTED WITTKOPF, PAUL ADDRESS REDACTED FLOOR 13 WOLF THEISS RECHTSANWALTE GMBH ACCOUNTS RECEIVABLE BUCHAREST CORPORATE CENTER STE GHOERGHE POLIZU NR 58-60 SECTOR 1 BUCHAREST RO 011062 ROMANIA WOLKART, KASEY M ADDRESS REDACTED WOLTERS KLUWER LAW BUSINESS SHERYL RANDOLPH PO BOX 71882 CHICAGO IL 60694-1882 ATTN: BRUCE MYGATT; MICHAEL 20 GENESIS CLOSE, DMS HOUSE, 2ND GRAND CAYMAN CAYMAN WOLVERINE FLAGSHIP FUND TRADING LIMITED C/O WOLVERINE ASSET MANAGEMENT SCOBY; KERI KELLY FLOOR KY1-1104 ISLANDS WOMACK MACHINE SUPPLY COMPANY PATRICK GREENE PO BOX 679055 DALLAS TX 75267-9055 WOODBURY, PARKER SCOTT ADDRESS REDACTED WOODCOCK, ALAN M ADDRESS REDACTED WOODCOCK, RAY A. ADDRESS REDACTED WOOTEN, KRISTOPHER LANCE ADDRESS REDACTED WORK BOAT ELECTRICAL SERVICES JENNIFER FALGOUT 4836 FREEDOM ROAD HOUMA LA 70360 WORKER COMPENSATION RX SHANETTE LEWIS PO BOX 654151 DALLAS TX 75265-4151 WORKFORCE SOFTWARE LLC PATRICIA KIMBERLIN DEPT CH 19758 PALATINE IL 60055-6758 WORKIVA, INC. ACCOUNTS RECEIVABLE 2900 UNIVERSITY BLVD. AMES IA 50010 WORKPLACE RESOURCE, LLC JAMIE MACAL 4400 NE LOOP 410 SUITE 130 SAN ANTONIO TX 78218 WORLD WIDE METRIC INC KRISTEN PO BOX 5267 NORTH BRANCH NJ 08876-1303 WORTH HIGGINS AND ASSOCIATES ANNIE BONNEY 8770 PARK CENRAL DRIVE RICHMOND VA 23227 WOUND CARE NP OF SOUTHEAST LA ASHLI M 200 BELLINGRATH PLACE MADISONVILLE LA 70447 WOW INTERNET CHRISTY BRUNSON PO BOX 70999 CHARLOTTE NC 28272-0999 WQIS 60 BROAD STREET 33RD FLOOR NEW YORK NY 10004 WRIGHT, BRUCE E ADDRESS REDACTED WRIGHT, ROBERT ANDREW ADDRESS REDACTED WRIST SHIP SUPPLY CHRIS MORTENSON ATTN: CHRIS MORTENSON 1485 EAST SAM HOUSTON PKWY S0 SUITE 100 PASADENA TX 77503 RUA NOSSA SENHORA DE FATIMA, N ESTADO DE WRO MENDES ME TATIANA CARRILLO 901 BARRO RIO ACIMA, CIDADE VARGEM SAO PAULO SAO PAULO SP 12935000 BRAZIL WSS DOS SANTOS INSTRUMENTOS JANAINA DOS SANTOS LIMA RUA SENADOR CARLOS TEIXEIRA DE CARVALHO SAO PAULO 1535010 BRAZIL WYNNE, DAVID ROSS ADDRESS REDACTED YAEGER, PAUL JOSEPH ADDRESS REDACTED YANEZ SANTANDER, JULIO CESAR ADDRESS REDACTED YANEZ, ANDRES MAURICIO ADDRESS REDACTED YANORA, JEFFREY DAVID ADDRESS REDACTED YBARRA, CARLOS RENE ADDRESS REDACTED YELLI, JONATHAN TYLER ADDRESS REDACTED YOHO, PATRICIA JOYCE ADDRESS REDACTED YOON, SUKMIN ADDRESS REDACTED YORK RISK SERVICES GROUP INC SUE JOHNSON PO BOX 784516 PHILADELPHIA PA 19178 YORK RISK SERVICES GROUP INC SUE JOHNSON PO BOX 784516 PHILADELPHIA PA 19178 YORK, SAMUEL HARRISON ADDRESS REDACTED YOST, CODY AUSTIN ADDRESS REDACTED YOUNG, CLINTON L ADDRESS REDACTED YOUNG, MARK THOMAS ADDRESS REDACTED YOUNG, MARY ORTTE ADDRESS REDACTED YOUNG, MICHAEL L ADDRESS REDACTED YOUNG, NICHOLAS E ADDRESS REDACTED YOUNG, RONALD K ADDRESS REDACTED ZACHARY, WILLIAM J ADDRESS REDACTED ZAMORA BARRIOS, VICTOR MANUEL ADDRESS REDACTED ZANDBERGEN, LOGAN ALAN ADDRESS REDACTED ZAPATA RAMOS, RENE OSVALDO ADDRESS REDACTED ZAPATA SILVA, OHAD LIDJIV ADDRESS REDACTED ZATARAIN SANCHEZ, HIRAM ALEXIS ADDRESS REDACTED ZAVALA ROBLES, JESUS JAVIER ADDRESS REDACTED ZAVALA VELAZQUEZ, FERNANDO ADDRESS REDACTED ZAVALA ZEPEDA, OSCAR ADDRESS REDACTED ZAVALETA MANCILLA, DAVID ADDRESS REDACTED ZEE MEDICAL SERVICE CO #123 SABRINA PO BOX 204683 DALLAS TX 75320 ZEIGER, DAMON A. ADDRESS REDACTED ZELLNER, TIMOTHY RUSSELL ADDRESS REDACTED ZERAI, AHFEROM MEBRAHTU ADDRESS REDACTED ZHURBIN, ANDREY YAKOVLEVICH ADDRESS REDACTED ZOBRIST, TAYLOR D ADDRESS REDACTED ZOLOTYKH, VYACHESLAV ADDRESS REDACTED ZORAN CUPIC MD PA 1140 BUSINESS CENTE DRIVE SUITE 101 HOUSTON TX 77043

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Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country ZUCKERT SCOUTT & RASENBERGER TIMOTHY MCGETTIGAN 888 SEVENTEENTH STREET NW SUITE 700 WASHINGTON DC 20006-3304 ZUNIGA CHAN, MARIA CRUZ ADDRESS REDACTED ZUNIGA JUAREZ, DAVID ADDRESS REDACTED ZURICH AMERICAN INSURANCE COMPANY & ATTN: MATT FARLEY, ELLIOT FIDELITY DEPOSIT COMPANY OF MARYLAND C/O KREBS FARLEY & DRY, PLLC SCHARFENBERG, & JON ORD 400 POYDRAS STREET SUITE 2500 NEW ORLEANS LA 70130 ZURICH AMERICAN INSURANCE COMPANY & FIDELITY DEPOSIT COMPANY OF MARYLAND C/O KREBS, FARLEY & DRY, PLLC ATTN DAVID KREBS 400 POYDRAS STREET SUITE 2500 NEW ORLEANS LA 70130 DISTRITO ZURICH COMPANIA DE SEGUROS SA ACCOUNTS RECEIVABLE AV EJERCITO NACIONAL NO 843 B COL GRANADA DEL MIGUEL HIDALGO FEDERAL MX 11520 MEXICO ZURITA GARCIA, MIGUEL ALONSO ADDRESS REDACTED ZUROWSKI, TRAVIS JOHN ADDRESS REDACTED POSTBUS/PO ZWARTBOL ADVOCATEN J. S. ORT CORTGENE 121 2951 EC ALBLASSERDAM BOX 106 ALBLASSERDAM 2950 AC NETHERLANDS

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Exhibit B

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Exhibit B Served Via Electronic Mail

Name Attention 1 Attention 2 Email ABS AMERICAS KELSEY CRAMER - SUA RECIPIENT [email protected] BEIER RADIO LLC TAMMY WARD [email protected] BIO-UV GROUP LISA BADANI [email protected] C/O GORDON, ARATA, MONTGOMERY, BARNETT, ATTN: STEPHEN WILLIAMSON; KRISTINA [email protected] BOLLINGER SHIPYARDS, INC. MCCOLLAM, DUPLANTIS, EAGAN, LLC LAGASSE [email protected] COASTAL DISTRIBUTORS INC. APRIL TRAHAN [email protected] DELTA SUBSEA LLC CAROLE HLOZEK [email protected] DNV GL NOBLE DENTON USA LLC IRENE PENA [email protected] DONOVAN MARINE INC. LAURA TUCKER [email protected] ENVIRONMENTAL PROTECTION AGENCY MAIL CODE 2310A, OFFICE OF GENERAL COUNSEL [email protected] FIRE PROTECTION SERVICE INC DANIELLE WILLIAMS [email protected] GE ENERGY POWER CONVERSION GLENN REISMAN [email protected] GNM MARITIMA INTERNACIONAL CESAR ALFREDO MEDINA ALBORES [email protected] GUIDANCE MARINE LLC - USA COLLEEN BENNETT [email protected] [email protected] ATTN: RICHARD A. AGUILAR; RUDY J. [email protected] GULF ISLAND SHIPYARDS, LLC C/O MCGLINCHEY STAFFORD, PLLC CERONE; MARK J. CHANEY, III [email protected] GULF ISLAND SHIPYARDS, LLC C/O MCGLINCHEY STAFFORD, PLLC ATTN: STEPHEN P. STROHSCHEIN [email protected] HARRIS COUNTY C/O LINEBARGER GOGGAN BLAIR & SAMPSON, LLP ATTN: TARA L. GRUNDEMEIER [email protected] HORNBECK OFFSHORE SERVICES, INC. C/O KING & JURGENS, LLC ATTN: HENRY A KING [email protected] HOUSTON CAD C/O LINEBARGER GOGGAN BLAIR & SAMPSON, LLP ATTN: TARA L. GRUNDEMEIER [email protected] HUISMAN NORTH AMERICA SERV LINDA [email protected] INTERNATIONAL PAINT INC. IP ORDER DESK NOL - SUA [email protected] JUNEAU MARINE REFRIGERATION AND AIR CONDITIONING I TRACY LEBLANC [email protected] KONGSBERG MARITIME INC TOYA PINKSTON - SUA RECIPIENT [email protected] LOUISIANA MACHINERY LLC ROXANNE VESTAL [email protected] MAKO UNLIMITED LLC WENDY DUBOSE [email protected] MARINE FAB AND REPAIR INC. C. FRUGA [email protected] MOTION / VOORHIES SUPPLY CO TAMMY SIMMONS; JOSIE WILEY [email protected] NOV RIG SOLUTIONS SPARES ANGELA WHITE [email protected] [email protected] OFFICE OF THE U.S. TRUSTEE ATTN: JAYSON B. RUFF; HECTOR DURAN, JR [email protected] SCHOTTEL INC JIM FREMIN [email protected] SEACATALOG.COM EMILY FAZZIO - SUA RECIPIENT [email protected] [email protected] ATTN: DAMIAN SCHAIBLE; DARREN [email protected] SECURED LENDER GROUP C/O DAVIS POLK & WARDWELL LLP KLEIN; STEPHANIE MASSMAN [email protected] [email protected] ATTN: JOHN HIGGINS; ERIC ENGLISH; M. [email protected] SECURED LENDER GROUP C/O PORTER HEDGES LLP SHANE JOHNSON [email protected] SHELL (SOPUS PRODUCTS) LEANEL CAMPOREDONDO DBA SHELL (SOPUS PRODUCTS) [email protected] SIEMENS INDUSTRY, INC JACK LOWENBERG [email protected] SPEEDCAST COMMUNICATIONS INC DWAYNE DECUIRE - SUA RECIPIENT [email protected] TAYLORS INTERNATIONAL SER SKYLAR SAVOIE [email protected] THE AD HOC COMMITTEE OF UNSECURED NOTEHOLDERS C/O COLE SCHOTZ P.C. ATTN: MICHAEL D. WARNER [email protected] THE AD HOC COMMITTEE OF UNSECURED NOTEHOLDERS C/O MILBANK LLP ATTN: BRETT GOLDBLATT [email protected] [email protected] ATTN: ERIC K. STODOLA; GERARD UZZI; [email protected] THE AD HOC COMMITTEE OF UNSECURED NOTEHOLDERS C/O MILBANK LLP JAMES BALL [email protected] U.S. ATTORNEY'S OFFICE SOUTHERN DISTRICT OF TEXAS [email protected]

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Exhibit B Served Via Electronic Mail

Name Attention 1 Attention 2 Email UNCLAIMED PROPERTY DIVISION OF THE TEXAS C/O OFFICE OF THE ATTORNEY GENERAL OF TEXAS COMPTROLLER OF PUBLIC ACCOUNTS BANKRUPTCY & COLLECTIONS DIVISION ATTN: JASON B. BINFORD [email protected] WARTSILA DYNAMIC POSITIONING DEBBI POYNTER [email protected] WILMINGTON TRUST, NATIONAL ASSOCIATION ATTN: DANIELLA WEBER, CLIENT ADMINISTRATOR [email protected] WILMINGTON TRUST, NATIONAL ASSOCIATION ATTN: NIKKI KROLL, BANKING OFFICER [email protected] WILMINGTON TRUST, NATIONAL ASSOCIATION C/O COLE SCHOTZ P.C. ATTN: MICHAEL D. WARNER [email protected] ATTN: JAYME T. GOLDSTEIN AND [email protected] WILMINGTON TRUST, NATIONAL ASSOCIATION C/O STROOCK & STROOCK & LAVAN LLP GABRIEL SASSON [email protected] [email protected] WILMINGTON TRUST, NATIONAL ASSOCIATION MEGHAN MCCAULEY; JEFF ROSE [email protected] [email protected] ZURICH AMERICAN INSURANCE COMPANY & FIDELITY ATTN: MATT FARLEY, ELLIOT [email protected] DEPOSIT COMPANY OF MARYLAND C/O KREBS FARLEY & DRY, PLLC SCHARFENBERG, & JON ORD [email protected] ZURICH AMERICAN INSURANCE COMPANY & FIDELITY DEPOSIT COMPANY OF MARYLAND C/O KREBS, FARLEY & DRY, PLLC ATTN DAVID KREBS [email protected]

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