Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 1 of 70

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

) In re: ) Chapter 11 ) WHITING CORPORATION, ) Case No. 20-32021 (DRJ) et al. ) Debtors.1 ) Jointly Administered )

CERTIFICATE OF SERVICE

I, Ana M. Galvan, depose and say that I am employed by Stretto, the claims and noticing agent for the Debtors in the above-captioned case.

On June 15, 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, via electronic mail on the service list attached hereto as Exhibit B, and on two (2) confidential parties not listed herein:

 Debtors’ Motion for Entry of an Order (I) Extending the Time Within Which the Debtors Must Assume or Reject Unexpired Leases of Nonresidential Real Property and (II) Granting Related Relief (Docket No.473)

Furthermore, on June 16, 2020, at my direction and under my supervision employees of Stretto caused the following documents to be served via overnight mail on the service list attached hereto as Exhibit C, and via electronic mail on the service list attached hereto as Exhibit D:

 Final Order Under 11 U.S.C. §§ 105, 361, 362, 363 and 507, and Bankruptcy Rules 2002, 4001 and 9014 (I) Authorizing Debtors to Use Cash Collateral and (II) Granting Adequate Protection to Prepetition Secured Parties (Docket No.476)

 Cancelation of Hearing Set for June 17, 2020, at 1:00 P.m. (CT) (Docket No.478)

Furthermore, on June 18, 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 E, via electronic mail on the service list attached hereto as Exhibit B:

 Fourth Notice of Additional Ordinary Course Professionals Pursuant to the Order Authorizing the Retention and Compensation of Certain Professionals Utilized in the Ordinary Course of Business (Docket No.487)

______1 The debtors in these chapter 11 cases, along with the last four digits of each debtor’s federal tax identification number, are: Whiting Canadian Holding Company Unlimited Liability Corporation (3662); Whiting Petroleum Corporation (8515); Whiting US Holding Company (2900); Whiting Oil and Gas Corporation (8829); and Whiting Resources Corporation (1218). The location of the debtors’ service address is: 1700 Lincoln Street, Suite 4700, Denver, Colorado 80203. Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 2 of 70

Furthermore, on June 18, 2020, at my direction and under my supervision employees of Stretto caused the following documents to be served via first-class mail on the service list attached hereto as Exhibit F, via electronic mail on the service list attached hereto as Exhibit G:

 Declaration of Disinterestedness of Stewart McKelvey Pursuant to the Order Authorizing the Retention and Compensation of Certain Professionals Utilized in the Ordinary Course of Business (Docket No.488)

 Declaration of Disinterestedness of Richards, Layton & Finger, P.A. Pursuant to the Order Authorizing the Retention and Compensation of Certain Professionals Utilized in the Ordinary Course of Business (Docket No.489)

Furthermore, on June 19, 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 E, via electronic mail on the service list attached hereto as Exhibit B:

 Notice of Reset of Hearing to Consider the Debtors’ Motion for Approval of the Disclosure Statement and Solicitation Procedures (Docket No.490)

Dated: June 24, 2020 /s/ Ana M. Galvan Ana M. Galvan STRETTO 410 Exchange, Suite 100 Irvine, CA 92602 Telephone: 800-330-2531 Email: [email protected]

Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 3 of 70

Exhibit A

Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 4 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country 1888 Industrial Services LLC PO Box 1180 Greeley CO 80632 208 Racquette Drive, LLC PO Box 1069 Fort Collins CO 80522 3 Forks Services PO Box 2594 Williston ND 58802 361 Services Inc. 4700 S. Syracuse Street, Suite 800 Denver CO 80237 3Es Innovation Inc. 227 - 11Th Avenue S.W. Suite 400 Calgary AB T2R 1R9 Canada 3Es Innovation Inc. (Doing Business As "Aucerna") 2711 Centerville Road Suite 400 Wilmington DE 19808 4 Corners Hotshot LLC PO Box 2133 Dickinson ND 58602 4D Consulting Services Inc 2 Whitetail Dr Columbus MT 59019 4Nk Ltd P O Box 566 Post TX 79356 8 North, LLC Attn: Steve Smith 370 - 17Th Street Suite 5300 Denver CO 80202 A G Andrikopoulos Resources Inc Po Box 788 Cheyenne WY 82003-0788 A2D Technologies, Inc D/B/A Tgs Geological Products And Services 10451 Clay Road Houston TX 77041 Abaco Energy LLC 8606 Island Rd Bismarck ND 58503-9227 Abc Fencing & Oil Field Services Llc Po Box 783 Belfield ND 58622 Abercrombie Energy Inc PO Box 137478 Fort Worth TX 76136 Abraxas Petroleum Corp 18803 Meisner Dr. San Antonio TX 78258-4240 Abraxas Petroleum Corporation 18803 Meisner Dr. San Antonio TX 78258-4240 Accelerated Production Services Inc.-4431 1585 Sawdust Road, Suite 210 Spring TX 77380 Ace In The Hole Construction PO Box 646 Buffalo SD 57720 Acklam Inc 195 Telluride St Ste 7 Brighton CO 80601 Acme Oil Corp LLC 1051 D West Hwy 34 Loveland CO 80537 Adam Resources 6603 Kirbyville Houston TX 77033 Adams Partnership LLP PO Box 503 Forsyth MT Add Source Group LLC PO Box 660832 Birmingham AL 35266 Addison Group 125 S. Wacker Dr., Suite 2700 Chicago IL 60606 Adobe 345 Park Avenue San Jose CA 95110-2704 Advanced Business Methods 1515 13Th Ave E West Fargo ND Advanced Network Management, Inc. PO Box 94840 Albuquerque MN 87199 Advanced Products Inc Pressure Control Systems & Supply Po Box 727 Ellisville MS 39437 Advanced Resources LLC 1531 Clipper Place Bismarck ND 58504 Advantage LLC-8294 5910 N Central Expressway, Suite 1800 Dallas TX 75206 Advisor Energ y 12 Greenway Plaza Ste 1100 Houston TX 77046 Aecom Technical Services Inc 1178 Paysphere Circle Chicago IL 60674 Aecom Technical Services, Inc. 6200 South Quebec Street Greenwood Village CO 80111 Aegis Chemical Solutions PO Box 679380 Dallas TX 75267-9380 Agar Corporation Inc 5150 Tacoma Dr Houston TX 77041 Aggietech Energy Services LLC Dba Big Bear Aggitech Po Box 7742 Midland TX 79708 Agi - The Easy Copy Company 650 W Bough Lane Ste 150-117 Houston TX 77024 Agri Properties LLP 10050 Co Rd 17A Westhope ND 58793 Agw 2180 South Ivanhoe Street Suite 5 Denver CO 80222 Aim Oilfield Services LLC 10330 Lake Road Ste Dd Houston TX 77070 Aimhire LLC 1775 Sherman St., Suite 1775 Denver CO 80203 Aimhire, LLC 750 W. Hampden Ave. Ste 325 Englewood CO 80110 Alabama Department of Environmental Management PO Box 301463 Montgomery AL 36130-1463 Alabama Office Of The Attorney General 501 Washington Ave Montgomery AL 36104 Alameda Energy Inc Coni J Stokes A-I-F 727 N Waco, #400 Wichita KS 67203 Alan Wesley Howard Address On File Albert G Metcalfe Address On File Albert G Metcalfe Iii Address On File Albert G Metcalfe, Iii Address On File Albert P & Anita Kessel Address On File Alchemy Technology Group, LLC 11 Greenway Plaza Suite 2600 Houston TX 77046 Alicia L Fettig Address On File Alight Solutions LLC F/K/A Hewitt Associates LLC 4 Overlook Point, Suite 40P Lincolnshire IL 60069 All American Records Management 15580 E Hinsdale Circle Centennial CO 80112 All In Oilfield Services PO Box 4144 Williston ND 58802 All Weather Well Service Inc 13876 57Th St Nw Williston ND 58801 Alliance Source Testing 5530 Marshall Street Arvada CO 80002 Alliance Source Testing LLC 255 Grant St Se Ste 600 Decatur AL 35601 Allred Mineral Company LLC PO Box 550 Collins MS 39428 Ally Consulting LLC PO Box 17275 Denver CO 80217 Ally Onsite LLC 992 S 4Th Ave Ste 100 #463 Brighton CO 80601 Allyson Kay Phillips Address On File Almquist Welding & Fab Address On File ALPenglow 2489 W Main Street Littleton CO 80120 Altiore LLC 6611 Stichter Ave Dallas TX 75230 Altitude Energy Partners LLC 7197 W Derrick Dr Casper WY 82604 Alvarez & Marsal 700 Louisiana Street Suite 3300 Houston TX 77002

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 1 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 5 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Alvin G Periot And Dorothy Jean Moore Periot Address On File Alvrone Sater Address On File Alzheimer Disease & Related Disorder Association Panhandle Chapter 225 N Michigan Ave Fl 17 Chicago IL 60601 Amazon Services Lcc 410 Terry Ave North Seattle WA 98109-5210 Ambyint Corporation-8299 2500 Summer St Ste 1100 Houston TX 77007 Amerada 19100 Ridgewood Parkway San Antonio TX 78529 American Compressor & Engine Leasing Co-1734 Leasing Company Inc Po Box 260479 Corpus Christi TX 78426-0479 American Compressor Equipment Co Inc Po Box 260010 Corpus Christi TX 78426-0010 American Eagle Energy Corporation 2549 West Main Street Suite 2020 Littleton CO 80120 American Eagle Energy Corporation Attn: Steve Dille 2549 West Main Street Suite 2020 Littleton CO 80120 American Equipment LLC 451 West 3440 South Salt Lake City UT 84115 American Geophysical Corporation 5271 South Quebec Street Englewood CO 80111 American Geophysical Corporation 63 Inverness Drive East Suite 200 Englewood CO 80112 American Geophysical Corporation And 5271 South Quebec Street Englewood CO 80111 American Geophysical Corporation On Behalf Of Petro-Hunt, L.L.C. 5271 South Quebec Street Englewood CO 80111 American International Relocation Solutions, LLC (Aires) 6 Penn Center West, Suite 200 Pittsburgh PA 15276 American Mechanical Serv Inc PO Box 911068 Denver CO 80291-1068 American Mechanical Services Of Denver, LLC 6810 South Tucson Way Centennial CO 80112 American Standard Energy Corp 4040 Broadway St Ste 508 San Antonio TX 78209-6351 American State Bank & Trust Address On File American Welltest Incinerators-8605 1624 Market St Ste 202 Denver CO 80202-1518 Anadarko Petroleum Corp. PO Box 730875 Dallas TX 75373-0875 Anchor Drilling Fluids Usa Inc Dba Advantage Drilling Fluids Dept 5973 Po Box 11407 Birmingham AL 35246-5973 Andeavo r Andeavor Logistics Rockies 19100 Ridgewood Parkway San Antonio TX 78259 Andeavor Field Services 19100 Ridgewood Parkway San Antonio TX 78259 Andeavor Field Services LLC 19100 Ridgewood Parkway San Antonio TX 78259 Andeavor Field Services LLC PO Box 871 Tulsa OK 74102-0871 Anderson Family Revocable Address On File Andrew & Christine Koch Trust Address On File Andrew Gee Address On File Andrew Gee And Kimbetrly Gee Address On File Andrew Paul Howard Address On File Andrews Independent School District, Anderws County Tax Office, Balmorhea Independent School District, Gaines County Appraisal District, Howard County Tax Office, Kermit Independent School District, and Yoakum County Tax Office c/o Perdue, Brandon, Fielder, Collins & Mott, LLP Attn: Laura J. Monroe PO Box 817 Lubbock TX 79408 Ann Ma y Address On File Anna Hart Hazard Address On File Anna Jane Attrill Address On File Annabelle Homes-8737 Address On File Antelope Energy Company LLC PO Box 577 Kimball NE 69145-0577 Anthony J Klein Address On File Anton And Kathryn Cvancara Address On File Anytime Hydroexcavation LLC PO Box 1784 Minot ND 58702 Aone Lois Wedel Address On File Ap Assets LLC 103 5Th St Se Dickinson ND 58601 Apache Deepwater LLC PO Box 840133 Dallas TX 75284-0133 Apeg Energy LP 2802 Flintrock Trace Ste 373 Austin TX 78738 Apergy (Dba Theta Oilfield Services) 5201 California Ave Suite 370 Bakersfield CA 93309 Apex Analytix 1501 Highwoods Blvd Ste 200 Greensboro NC 27410 Apex Analytix LLC 1501 Highwoods Blvd Ste 200 Greensboro NC 27410 Apex Analytix, LLC 1501 Highwoods Boulevard Suite 200 Greensboro NC 27410 Apex Well Servicing Inc 4970 146Th Dr Nw Williston ND 58801 April Obenou r Address On File Aptean 770 Pelham Road Greenville SC 29615 Ar Energy LLC PO Box 285 Watford City ND 58854 Aragon International Inv., LLC 2481 Cilantro Glen Escondido CA 92029 Aransas County, Dewitt County and Nueces County c/o Linebarger Goggan Blair & Samspon, LLP Attn: Diane W. Sanders PO Box 17428 Austin TX 78760-7428 Arb Midstream 1000 Louisiana Suite 4300 Houston TX 77002 Arc Energy Service & Supply 16029 Northwest Blvd Robstown TX 78380 Archrock Partners LP PO Box 201160 Dallas TX 75320-1160 Gaslight Square, 1001 Third Archrock Partners Operating LLC c/o Anderson Lehrman Barre & Maraist, LLP Attn: Kevin M. Maraist Street Suite 1 Corpus Christi TX 78404 Gaslight Square, 1001 Third Archrock Partners Operating LLC c/o Anderson, Lehrman, Barre & Maraist, LLP Attn: Kevin M. Maraist Street Suite 1 Corpus Christi TX 78404 Archrock Services LP 9807 Katy Freeway Ste 100 Houston TX 77024 Archrock Services LP-6714 9807 Katy Freeway Ste 100 Houston TX 77024 Ardean Aafedt Address On File

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 2 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 6 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Ardean Harstad Address On File Ardean O Aafedt L/E Address On File Ardis G Burkholder Address On File Argis Solutions PO Box 461677 Aurora CO 80046 Argis Technologies LLC 16101 E Hinsdale Ln Aurora CO 80016 Arkansas Department of Energy and Environment Attn: Division of Environmental Quality 5301 Northshore Drive North Little Rock AR 72118-5317 Arkansas Office Of The Attorney General 323 Center St Suite 200 Little Rock AR 72201 Arley And Sandra Larson, Jts Address On File Arley Larson And Sandra Larson Address On File Arlove Stevens Address On File Armstrong Children M Jackson Armstrong Trustee Po Box 1999 Dickinson ND 58602 Armstrong Childrens Trust Address On File Armstrong Children'S Trust Address On File Armstrong Corp PO Box 1999 Dickinson ND 58602-1999 Armstrong Minerals LLC PO Box 1999 Dickinson ND 58602 Armstrong Minerals, LLC PO Box 1999 Dickinson ND 58602 Armstrong Oil LLC PO Box 1999 Dickinson ND 58602 1133 College Arrow Pipeline LLC-8306 C/O Fredrickson & Byron P.A. Attn: Lawrence Bender Drive #1000 Bismarck ND 58501 Arrowhead Energy Inc 2934 Nw 156Th Street Edmond OK 73013 Arthur J Jared Address On File Arthur Moore Wilson Address On File Arthur Pajari & Lucille Pajari Address On File Ashley Resources Inc PO Box 63 Bismarck ND 58502 Ashwood Res 1161 Wayzata Blvd E Ste 240 Wayzata MN 55391 Ashwood Resources LLC 1161 Wayzata Blvd E Ste 240 Wayzata MN 55391 Ask Transportation Inc PO Box 1641 Williston ND 58802-1641 Aspect Resources LLC 511 Sixteenth Street, Ste 300 Denver CO 80202 Aspen Technology Inc PO Box 347374 Pittsburgh PA 15251-4374 Aspen Technology, Inc 20 Crosby Drive Bedford MA 01730 Assetpoint LLC PO Box 743722 Atlanta GA 30374-3722 Assetpoint LLC (Aptean) 770 Pelham Road Greenville SC 29615 Assetpoint LLC-8309 PO Box 743722 Atlanta GA 30374-3722 Astro Chem Lab Inc P O Box 972 Williston ND 58802-0972 At&T Mobility 208 S Akard St Dallas TX 75202 A-Texian Compressor Inc 111 Skytop Road Po Box 249 Telferner TX 77988-0249 A-Texian Compressor, Inc.-1735 111 Skytop Road Po Box 249 Telferner TX 77988-0249 Atlas Oil Co PO Box 672992 Detroit MI 48267-2992 Atlas Oil Company Attn: John E. Ortoleva, Jr. 24501 Ecorse Rd. Taylor MI 48180 Atlas Oil Company Attn: Joseph E. Rivera 24501 Ecorse Rd Taylor MI 48180 Atlas Oil Company c/o Cole Schotz P.C. Attn: Michael D. Warner & Benjamin L. Wallen 301 Commerce Street Suite 1700 Fort Worth TX 76102 Atomic Capital Oil And Gas Colorado Llc 2777 Allen Pkwy Ste 1185 Houston TX 77019 Atp Oilfield Services LLC 22670 Cr 30 Hudson CO 80642 Aucerna 250 - 2Nd Street Sw Suite 800 Calgary AB 2TP 0C1 Canada Aucerna (Registred Trade Name Of 3Es Innovation Inc.) 250 - 2Nd Street Sw Suite 800 Calgary AB 2TP 0C1 Canada Audimation Services, Inc. 16340 Park Ten Place #335 Houston TX 77084 Auditboard Inc 12800 Center Court Dr S Ste 100 Cerritos CA 90703 Auditboard Inc. 12800 Center Court Dr S Ste 100 Cerritos CA 90703 Auditboard, Inc. 12800 Center Court Drive South Suite 100 Cerritos CA 90703 AuditBoard, Inc. c/o Fox Rothschild LLP Attn: Martha B. Chovanes 2000 Market Street 20th Floor Philadelphia PA 19103-3222 Autodesk, Inc. 111 Mcinnis Parkway San Rafael CA 94903 Automation & Electronics Inc PO Box 2670 Casper WY 82602 Avalon North LLC PO Box 815 Bismarck ND 58502-0815 Avalon Resources 15 West 6Th St Ste 2300 Tulsa OK 74119 Avery Alkane LLC PO Box 1075 Bismarck ND 58502 Axis Exploration LLC 15 W 6Th St, Suite 2350 Tulsa OK 74119 Az Field Services LLC 3900 W County Road 138 Midland TX 79706 Az Oilfield Services 3900 W County Rd 138 Midland TX 79706 B & G Roustabout Service LLC PO Box 818 Williston ND 58802 B H Inc 826 South 1500 East Vernal UT 84078 B&B Hot Oil Service Inc 135 4Th Avenue Se Dickinson ND 58601 B.O.S. Roustabout & Backhoe Service Inc Po Box 8 Ryder ND 58779-0008 B-3 Hammond LLC PO Box 1334 Bismarck ND 58502 Back Country Spraying LLC PO Box 560 Buffalo WY 82834 Badger Daylighting Corp PO Box 95000 Lb#1627 Philadelphia PA 19195-0001 Badlands Consulting LLC PO Box 367 Glendive MT 59330 Badlands Development LLC-8312 3711 4Th Ave Ne Watford City ND 58854-7027 Badlands Hydrotesting Inc PO Box 286 Bowman ND 58623 Badlands Power Fuels LLC PO Box 1369 Minot ND 58702-1369

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 3 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 7 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Badlands Services Group LLC PO Box 2780 Williston ND 58802-2780 Incorporated A Ge Company(Bhge Us Ofs)-312 Business Support Services Po Box 301057 Dallas TX 75303-1057 Baker Hughes Software Inc Business Support Services Po Box 301057 Dallas TX 75303-1057 Bakersfield Pipe & Supply Inc PO Box 60006 Los Angeles CA 90060-0006 Bakken Hbt Ii LP PO Box 779 Oklahoma City OK 73101-0779 Bakken Hbt LP PO Box 779 Oklahoma City OK 73101-0779 Bakken Production Inc 1050 31St Ave Sw, Suite A Minot ND 58701 Bakkenlink Pipeline LLC-8318 1201 Louisiana St Ste 3400 Houston TX 77002 Balanced Energy Oilfield Services Usa Inc Box 1865 Brooks AB T1R 1C6 Canada Balanced Energy Oilfield Services USA Inc. c/o Rapp & Krock, PC Attn: Henry Flores & Kenneth M. Krock 1980 Post Oak Blvd Suite 1200 Houston TX 77056 Ballantyne Legacy Resources Inc Po Box 401 Westhope ND 58793 Ballard Spahr LLP 2000 Ids Center 80 South 8Th Street Minneapolis MN 55402-2119 Banded Iron Us Inc PO Box 51475 Lafayette LA 70505-1475 Banded Rock LLC 242 3Rd Ave W Sherwood ND 58782 Bank of New York Mellon Trust Company, N.A. c/o Morgan, Lewis & Bockius LLP Attn: Glenn E. Siegel and Nakisha Duncan 101 Park Avenue New York NY 10178-0600 Bank of New York Mellon Trust Company, N.A. c/o Morgan, Lewis & Bockius LLP Attn: Rachel J. Mauceri 1701 Market Street Philadelphia PA 19103 Bank of New York Mellon Trust Company, N.A. c/o Morgan, Lewis, & Bockius LLP Attn: Winstol D. Carter, Jr. 1000 Louisiana Street Suite 4000 Houston TX 77002 Bank Of Utah 50 S 200 E Ste 110 Salt Lake City UT 84111-1617 Bar Y Bar Ranch Inc 13415 Wcr 88 Pierce CO 80650 Baranko Bros Inc PO Box 0820 Dickinson ND 58602-0820 Barbara M Burgess Address On File Barbara Steele Address On File Barr Engineering Co 1600 Broadway Street Suite 1600 Denver CO 80202 Barr Engineering Company 4300 Marketpointe Dr Ste 200 Minneapolis MN 55435 Bartlett & West Inc 3456 E Century Ave Bismarck ND 58503 Basic Energy Services LP PO Box 841903 Dallas TX 75284-1903 Basin Acquisition Fund, LP 1320 South University Dr Suite 400 Fort Worth TX 76107 Basin Concrete Inc PO Box 4264 Williston ND 58802-4264 Basin Filtration Systems And Tubin' Testin' Inc. P O Box 1918 Williston ND 58802-1918 Basin Service Company Inc PO Box 397 Westhope ND 58793 Basware Inc. 1245 Rosemont Drive Fort Mill SC 29707 Bau Oil Services Corp 4301 W 57Th St Ste 131 Sioux Falls SD 57108 Bb Management LLC PO Box 80735 Phoenix AZ 85060 Bcsp 1700 Broadway Property (Previously 100542 - Artis Hra 1700 Broadway LP) PO Box 741297 Los Angeles CA 90074-1297 Bcsp Denver Property LLC Attn: Wells Fargo Property Manager C/O Callahan Management 1700 Lincoln Street Suite 2500 Denver CO 80203 Bcsp Denver Property LLC Attn: Wells Fargo Center Property Manager C/O Callahan Management 1700 Lincoln Street Suite 2500 Denver CO 80203 BCSP Denver Property LLC c/o Goulston & Storrs PC 400 Atlantic Avenue Boston MA 02110-3333 BCSP Denver Property LLC c/o Goulston & Storrs PC Attn: Trevor R. Hoffmann 885 Third Avenue 18th Floor New York NY 10022 Beach Nd Office Lease-8321 Beachbums Energy LLC PO Box 5141 Scottsdale AZ 85261-5141 Bear Creek Energ y PO Box 1450 Bemidji MN 56619-1450 Bear Creek Engineering LLC PO Box 6150 Shreveport LA 71136 Beartooth Ridge Resources Inc PO Box 117 Billings MT 59103 Beatrice I Hanson Address On File Beaver Creek LLC 3765 Hwy 1806 N Mandan ND 58554 Beaver Investments LLP PO Box 1723 Minot ND 58702 Bedico LLC 2014 Grove Park Lane Richardson TX 75080 Bel Fourche Pipeline Po Drawer 2360 Casper WY 82606-2360 Belle Fourche Pipeline Company P.O. Drawer 2360 Casper WY 82602 Ben C Wall Address On File Benjamin E Perkins Address On File Benjamin J Larson Address On File Benz Oil Co Inc 700 27Th Avenue Se Killdeer ND 58640 Best Energy Inc PO Box 9 South Heart ND 58655-0009 Bette L Knabe Ttee Address On File Betty Jane Harper Address On File Betty Lou Bean Willard Address On File Beveridge & Diamond, P.C. Attn: Peter J. Schaumberg 1350 I Street, N.W., Suite 700 Washington DC 20005-3311 Beverly Ann Humenyik Address On File Beverly J Forthun Address On File Beyond Horizon LLC P O Box 223 Norman OK 73070 Bf Energy LLC 3504 E Clairmont Ave Paradise Valley AZ 85253 Bhh Investments LLC PO Box 3715 Enid OK 73702 Bhs Inc PO Box 1168 Vernal UT 84078 Bid Group LLC PO Box 5045 Scottsdale AZ 85261-5045 Big Horn Anchor Service Inc PO Box 1738 Worland WY 82401 Attn: Keith M. Aurzada, Michael P. Cooley, & Big Horn Rural Electric Company c/o Reed Smith LLP Lindsey L. Robin 2501 N Harwood Suite 1700 Dallas TX 75201

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 4 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 8 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Big Lake Oil Company LLC 4520 12Th Str Ne Fessenden ND 58438 Big Red Hot Oil Service Inc PO Box 1847 Vernal UT 84078 Big Roy Trucking Inc 759 7Th Ave Nw Mercer ND 58559 Bighorn Vac Inc PO Box 1350 Sidney MT 59270 Biladeau Holdings LLC 96 Virginia St St Paul MN 55102 Bilfinger Westcon Inc PO Box 1735 Bismarck ND 58502 Bill Barrett Corporation (Now High Point Resources) 555 17Th Street, Ste. 3700 Denver CO 80202 Bill L Seerup Address On File Billy & Marion Smith Family Tr Address On File Bio Tech Inc 4900 Dougherty Place Oklahoma City OK 73179 Bip DriLLCo LLC 1700 Lincoln St Suite 3450 Denver CO 80203 Bit Refinery, LLC PO Box 806 Morrison CO 80465 Bj Services LLC PO Box 733585 Dallas TX 75373-3585 Bjc Investments LLC PO Box 460 Greenville MI 48838 Blac Frac Tanks Inc 808 County Road215 Parachute CO 81635 Black Bear Resources Ii LLC 10390 39Th Street North Suite 4 Lake Elmo MN 55042 Black Bear Resources Iii LLC 10390 39Th Street North Suite 4 Lake Elmo MN 55042 Black Bear Resources LLLP 10390 39Th Street North Suite 4 Lake Elmo MN 55042 Black Bullion LLC PO Box 3102 Bismarck ND 58502 Black Hawk Energy Services Ltd PO Box 204760 Dallas TX 75320-4760 Black Hawk Energy Services Ltd Attn: Mike Davis 118 84th St Williston ND 58801 Black Hills Trucking Inc Po Drawer 2360 Casper WY 82602 Black Stone Energy Co LLC 1001 Fannin Street Suite 2020 Houston TX 77002 Black Stone Energy Company, LLC 1001 Fannin Street Suite 2020 Houston TX 77002 Black Stone Minerals Co LP 1001 Fannin Suite 2020 Houston TX 77002 Black Stone Minerals Company, LP 1001 Fannin Suite 2020 Houston TX 77002 Blackbend Oil & Gas LLC 500 Dallas St Ste 1250 Houston TX 77002 Blackduck Power Equipment Inc 1499 Anne Street Nw Bemidji MN 56601 Blackeagle Energy Services 230 Commerce Drive Berthoud CO 80513 Blackhawk Equipment Corp 5295 Vivian St Arvada CO 80002 Blackout Energy Services Inc PO Box 485 Vernal UT 84078 Blackstream Energy LLC 1313 Campbell Road Building D Houston TX 77055 Blaise Energy Inc PO Box 100 Turtle Lake ND 58575 Blaise Energy Inc-4822 PO Box 100 Turtle Lake ND 58575 Blake Hart Address On File Blake Oil & Gas Corporation 400 N Main Midland TX 79701 Bling Resources LLC 417 7Th Ave W Dickinson ND 58601 Bloomberg 1801 South Bell Street Arlington VA 22202 Bloomberg Bna Book Division Po Box 17009 Baltimore MD 21297-1009 Bloomberg LP PO Box 30244 Hartford CT 06150 Bloomberg LP PO Box 416604 Boston MA 02241-6604 Blue Lightning PO Box 206 Wiggins CO 80654 Blue Ridge Energy LLC PO Box 26567 Phoenix AZ 85068 Blue Sky Properties LLC PO Box 85 Dickinson ND 58602 Bluefin Partners LLC 1912 1St St W Dickinson ND 58601 Blueprint Energy Partners LLC 2425 Colman Circle Casper WY 82601 Bnn North Dakota 370 Van Gordon St Lakewood CO 80228 Bnn North Dakota LLC (Acquired Buckhorn Swd Solutions And Buckhorn Energy Services In Feb 2018) 370 Van Gordon St Lakewood CO 80228 Bnn Redtail LLC (Subsidiary Bnn Western, LLC) 370 Van Gordon Street Lakewood CO 80228 Bnn Redtail LLC-5561 370 Van Gordon Street Lakewood CO 80228 Bnn Redtail, LLC 370 Van Gordon Street Lakewood CO 80228 BNN Redtail, LLC Attn: Mark Ritchie 370 Van Gordon St Lakewood CO 80228 Bnn Western, LLC 370 Van Gordon Street Attn: Jeff Nelson Lakewood CO 80228 BNN Western, LLC Attn: Matt Sheehy 370 Van Gordon Street Lakewood CO 80228 BNN Western, LLC c/o Sidley Austin LLP Attn: David Kronenberg, Esq. 1501 K Street NW Suite 600 Washington DC 20005 BNN Western, LLC, BNN North Dakota, LLC, Tallgrass Midstream, LLC, Trailblazer Pipeline Company LLC, Buckhorn SWD Solutions, LLC and Buckhorn Energy Services, LLC c/o Sidley Austin LLP Attn: Hannah Rozow Owolabi 1000 Louisiana St Suite 5900 Houston TX 77002 Bnsf Railway Co PO Box 676167 Dallas TX 75267-6167 Bnsf Railway Company Bnsf Permit Department Jones Lang Lasalle Brokerage 4200 Buckingham Ste 110 Fort Worth TX 76155 Boardvantage, Inc. 4300 Bohannon Drive Suite 110 Menlo Park CA 94025 Bobby Powell Construction Inc. 3100 South Mcgregor Road Coahoma TX 79511 Bobs Oilfield Service Inc Box 706 Belfield ND 58622 Boedecker Resources, C/O Ruth Boedecker C/O Ruth Boedecker Po Box 1007 Lewistown MT 59457 Boh Inc-3544 29227 Network Place Chicago IL 60673-1292 Bokf Petro Holding LLC 2525 Kell Blvd Ste 510 Wichita Falls TX 76308 201 West Main Street, Suite Boone Karlberg P.C. Central Square Building 300 Missoula MT 59802

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 5 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 9 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Border States Industries Inc PO Box 911105 Denver CO 80291-1105 Borgoil Resources LLP 3001 134Th Ave Nw Arnegard ND 58835-9105 Borsheim Crane Service LLC PO Box 1344 Williston ND 58802 Bosque Disposal Systems LLC PO Box 614 Meridian TX 76665 Boyd & Mcwilliams Address On File BP America Production Company c/o Liskow and Lewis 1001 Fannin Street Suite 1800 Houston TX 77002 Bp Energy Compan y 201 Helios Plaza Houston TX 77079 Bp Energy Compan y 201 Helios Way Attn: Sara Coghlan Houston TX 77079 Bp Energy Compan y PO Box 3092 Houston TX 77253 Bpi-Boh 2520 Highway 35, Suite 2 Manasquan NJ 08736-1900 Bracewell & Giuliani LLP 2000 K Street, N.W. Ste. 500 Washington DC 20006-1872 Brad Consulting 465 West 4000 South Vernal UT 84078 Bradford Allegheny Bakken I LP 500 Seneca Street Suite 503 Buffalo NY 14204 Bradford Energy Capital LLC 500 Seneca St Ste 503 Buffalo NY 14204 Bradley Nesheim Address On File Brainstorm PO Box 495 Orem UT 84059 Brainstorm Inc PO Box 495 Orem UT 84059 Brand X Hydrovac Services Inc PO Box 1199 Silt CO 81652 Braun Intertec Corporation Nw 7644 PO Box 1450 Minneapolis MN 55485-7644 Braun Trucking Inc Box 1033 Tioga ND 58852 Brazoria County Tax Office c/o Perdue, Brandon, Fielder, Collins & Mott, LLP Attn: Owen M. Sonik 1235 North Loop West Suite 600 Houston TX 77008 Breckenridge Exploration 789 PO Box Breckenridge TX 76424 Breitburn Operating L.P 600 Travis Street, Ste 4800 Houston, TX 77002 Breitburn Operating L.P. Attn: Greg Brown 515 South Flower Street Suite 4800 Los Angeles CA 90071 Breitburn Operating LP PO Box 204662 Dallas TX 75320-4662 Brenda Schumache r Address On File Brendall Energy LLC 8310 S Valley Hwy Ste 350 Englewood CO 80112 Brent M Bibler Address On File Brent O Hauge & Catherine A Address On File Bri Consulting Group Inc 1616 S Voss Rd Ste 845 Houston TX 77057 Brian Colbert And Kristine Cabral Address On File Brian P Hagen Address On File Bridgepoint Mineral Acquisition Fund 2 Llc Po Box 10457 Midland TX 79702 Bridger Pipeline 455 N Poplar St Casper WY 82601 Bridger Pipeline LLC 455 N Poplar St Casper WY 82601 Bridger Pipeline LLC P.O. Drawer 2360 Casper WY 82602 Brigade Energy Services LLC 700 17Th St Ste 1550 Denver CO 80202 Brigham Construction Inc PO Box 1094 Williston ND 58802-1094 Building 2 - Brigham Oil & Gas, L.P. Attn: David T. Brigham 6300 Bridge Point Parkway Suite 500 Austin TX 78730 British Columbia Ministry Of Environment & Climate Change Strategy Contacts PO Box 9360 Stn Prov Govt Victoria BC V8W 9M2 Canada Broad Creek Resources LLC 17 Mckays Point Rd Hilton Head SC 29928 Brookside Holdings Inc PO Box 650 Ada MI 49301 Broughton Petroleum Inc PO Box 1389 Sealy TX 77474 Brownstein Hyatt Farber Schreck, LLP 410 Seventeenth Street Suite 2200 Denver CO 80202-4432 Bruce Alexander Blake Heritage Address On File Bruce And Beverly Conway Address On File Bruce Helling Address On File Bruce Helling Address On File Bruin E&P 602 Sawyer St Ste 710 Houston TX 77007 Bruker Nano Inc. 1 Liberty Pl New York NY 10038 Bryan A Gumm Address On File Bryan A Kosteleck y Address On File Bta Oil Producers LLC 104 S Pecos Midland TX 79701 Bta Oil Producers LLC Attn: Willis Price 104 South Pecos Midland TX 79701 Bta Oil Produces, LLC Attn: Willis Price 104 South Pecos Midland TX 79701 Buc-Jag Investments LP 137 Sheridan Road Winnetka IL 60093 Buck Horn LP PO Box 882 Midland TX 79702 Buckhorn PO Box 882 Midland TX 79702 Buckhorn Energy Oaks Disposal Services Llc 6312 S Fiddlers Green Circle Suite 300E Greenwood Village CO 80111-4831 Buckhorn Energy Services LLC-4951 6312 S Fiddlers Green Cir Ste 300E Greenwood Village CO 80111-4831 Buckhorn Measurement Services Inc Po Box 28 Stanley ND 58784-0028 Buckhorn Swd Solutions LLC-8170 6312 S Fiddlers Green Circle, Suite 300E Greenwood Village CO 80111 Bulldog Services LLP 5054 Bennett Industrial Dr #11 Williston ND 58801 6432 Cayenne Buman Trust Carl Buman & Stuart Buman Co Trustees Ct Las Cruces NM 88012 Bureau Veritas North America Inc 16800 Greenspoint Park Dr Ste 300S Houston TX 77060

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 6 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 10 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country 315 S Burlington Resources O&G Co LP Jv Non-Op 360 Plaza Office Building Johnstone Ave Bartlesville OK 74004 Burlington Resources Oil & Gas Company LP Attn: Jeff Graves 925 N. Eldridge Parkway Houston TX 77079 Burlington Resources Oil & Gas LP, C/O Crownquest Operating LLC PO Box 11190 Midland TX 79702 Burlington Resources, Inc 22295 Network Place Chicago IL 60673-1222 Burns H Mcfarland Address On File Burton Chudacoff Address On File Busy Bees Hot Oil Inc PO Box 11362 Williston ND 58803 Butchs Rat Hole & Anchor Service, Inc Po Box 1323 Levelland TX 79336 Butler Machinery Company PO Box 9559 Fargo ND 58106-9559 Butler, Snow, O'Mara, Stevens & Canada, PLLC 210 East Capitol Street 17Th Floor Jackson MS 39201 Butte Pipeline 1970 East 3Rd Avenue, Suite 205 Durango CO 81301 Butte Pipeline Company P.O. Drawer 2360 Casper WY 82602 Bxp Partners PO Box 7227 Dallas TX 75209 Bxp Partners Iii LP PO Box 7227 Dallas TX 75209 Bxp Partners Iii, LP PO Box 7227 Dallas TX 75209 Byron Connell & Address On File Byron Richard Address On File C & G Electrical Services LLC 61 Inverness Dr E Ste 205 Englewood CO 80112 C & J Spec-Rent Services Inc PO Box 679324 Dallas TX 75267-9324 C King Oil Inc 2119 Kennedy Ave Bismarck ND 58501 C Wayne Vance Address On File C&H Testing Service LLC PO Box 9907 Bakersfield CA 93389-1907 Cache Trucking LLC 430 6Th Ave West Williston ND 58801 Cade Production 11342 Birolli Place Littleton CO 80125 Cade Production, LLC 11342 Birolli Place Littleton CO 80125 Cade Production. LLC 11342 Birolli Place Littleton CO 80125 Cahoon Enterprises LLC 5245 142Nd Dr Nw Williston ND 58801 Calf Creek Royalty Ltd PO Box 10457 Midland TX 79702 Caliber Midstream Partners LP 950 17Th St Ste 1000 Denver CO 80202-2819 1133 College Caliber Midstream Partners LP -6938 C/O Fredrickson & Byron P.A. Attn: Lawrence Bender Drive #1000 Bismarck ND 58501 Caliber North Dakota 950 17Th St Ste 1000 Denver CO 80202 Caliber North Dakota LLC 950 17Th St Ste 1000 Denver CO 80202 Caliber North Dakota LLC 950 17Th St Ste 1000 Denver CO 80202-2819 Caliber North Dakota LLC Attn: Daniel Werth 950 - 17Th Street Suite 1000 Denver CO 80202 Caliber North Dakota LLC c/o Weil, Gotshal Manges LLP Attn: Alfredo R. Perez and Brenda Funk 700 Louisiana Street Suite 1700 Houston TX 77002 California Environmental Protection Agency 1001 I Street PO Box 2815 Sacramento CA 95814 California Office Of The Attorney General PO Box 944255 Sacramento CA 94244-2550 Callier Dp, LLC Calto Oil Company 7015 Snider Plz Dallas TX 75205 Cameron B Arnegard & Address On File Cameron Surface Systems PO Box 731412 Dallas TX 75373-1412 Camo Software Inc 1 Woodbridge Ctr Woodbridge NJ 07095 Camwest Exploration LLC 1825 Lawrence Street Ste. 300 Denver CO 80202 Attn: General Manager, Trading Documentation, Canadian Imperial Bank Of Commerce Capital Markets Risk Management 161 Bay Street Brookfield Place 10Th Floor Toronto ON M5J 2S8 Canada Canary Production Svcs LLC 17207 N Perimeter Dr Ste 220 Scottsdale AZ 85255 Capex Oilfield Services Inc 8509 Oil Avenue Williston ND 58801 Capital One, National Association 299 Park Avenue Attn: Edward Iuteri New York NY 10017 Capital Services LLC PO Box 640 Williston ND 58801 Capital Well Services PO Box 1511 Williston ND 58802 Caribam Resources Inc 108 Morado Ln Sanat Barbara CA 93105 Carl Bean Address On File Carl Herrin Oil And Gas LLC PO Box 957 Ridgeland MS 39158 Carol Amdal Address On File Carol Christopherson Address On File Carol Tjelde Address On File Carole Freed Address On File Caroline Lamson Address On File Carolyn F Lemonie r Address On File Carrizo (Niobrara) LLC Attn: Andrew Agosto 500 Dallas Street Suite 2300 Houston TX 77002 Carrizo (Niobrara) LLC Attn: Gas Marketing 2000 W Sam Houston Pkwy S Ste 2000 Houston TX 77042-3622 Carrizo Niobara LLC 500 Dallas St Ste 2300 Houston TX 77002 Carrizo Oil & Gas Inc 500 Dallas St Suite 2300 Houston TX 77002 Carrizo Oil & Gas, Inc. 500 Dallas St Suite 2300 Houston TX 77002 Carroll F Hegge Address On File Carroll F Hegge & Pamela J Hegge, J/T Address On File

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 7 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 11 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Carroll J Tippit Address On File Carroll R Paulson Address On File Carter Rennerfeldt Address On File Castle Oilfield Services PO Box 1472 Williston ND 58802 Castle Operating LLC 4727 Gaillardia Pkwy, Suite 200 Oklahoma City OK 73142 Castle Peak Energy LLC C/O Rampart Energy Company Dept 999039 Po Box 5627 Denver CO 80217-5627 Catalyst Energy LLC 3018 N 53Rd Place Phoenix AZ 85018 Cathy E. Bennett & Associates, Inc. 217 S. Stemmons Fwy Ste. 203 Lewisville TX 75067 Ccg Americas Inc. (And Equity Oil Company) 16430 Park Ren Place Houston TX 77084 Cdm Resource Management LLC (Usa Compression Partners)- 6083 PO Box 205802 Dallas TX 75320-5802 Cdw PO Box 75723 Chicago IL 60675 Cecil & Patricia Wilson Address On File Cei Electrical Contractors PO Box 1934 Colstrip MT 59323 Centennial Water Pipelines LLC 1200 17Th St Ste 2850 Denver CO 80202 Centennial Water Pipelines LLC-8349 1200 17Th St Ste 2850 Denver CO 80202 Central Mountain Hot Oil Services Inc Po Box 1706 Roosevelt UT 84066 Centurylink Acct No: 970-407-3000 412B Po Box 91155 Seattle WA 98111-9255 Centurylink (Dba Centurylink Communications, LLC) Acct No: 970-407-3000 412B Po Box 91155 Seattle WA 98111-9255 CGGVeritas Land (U.S) Inc. c/o Adams and Reese LLP Attn: Scott R. Cheatham 701 Poydras Street Suite 4500 New Orleans LA 70139 Cggveritas Land (U.S.) Inc. 10300 Town Park Drive Houston TX 77072 Cggveritas Land (Us) Inc 10300 Town Park Drive Houston TX 77072 Chadwick L Gernaat & Tonia C Gernaat Address On File Chadwick L. Gernaat & Tonia C. Gernaat, Address On File Challenger Crude Ltd 3300 N A St Midland TX 79705 Challenger Crude Ltd 3525 Andrews Hwy Midland TX 79703 Chance Tools Ltd P O Drawer J Kermit TX 79745 Chaparral Energy 701 Cedar Lake Blvd Oklahoma City OK 73114 Charles J. Rimer Address On File Charles Mclaughlin LLC PO Box 1427 Duncan OK 73534 Charles T & Ruth Fay Inter Address On File Charles Vincent Tattu Address On File Charles W & Patty N Brown LLC PO Box 587 Marlow OK 73055 Charlotte Payette Address On File Charmetra Nicole Bean Address On File Chatfield Dp, LLC 10320 N Chartfield Drive Littleton CO 80125 Chemical Weed Control Inc PO Box 512 Brownfield TX 79316 Chemoil Corp 4 East Sheridan Ste 400 Oklahoma City OK 73104 Chemoil Corporation Attn: Chad O'Neil 40 E. Sheridan Avenue Suite 400 Oklahoma City OK 73104 Cherokee Royalty Corporation 2550 Simms St Lakewood CO 80215 Cherokee Warrior Inc PO Box 399 Garden City KS 67846 Cherry Creek Oil & Gas LLC PO Box 6301 Denver CO 80206 Chesapeake Energy Corporation PO Box 18496 Ok City OK 73154-0496 Chesapeake Operating, Inc PO Box 18496 Ok City OK 73154 Chevron 6001 Bollinger Canyon Rd San Ramon CA 94583-2324 Chevron North America Exploration And Production Company 11111 South Wilcrest Houston TX 77099 Chevron Texaco PO Box 846 Maysville OK 73057 Chevron U.S.A. Inc. Attn: A. Sandy Cornelius 646 County Square Drive Ventura CA 93003 Attn: Edward L. Ripley, Lisa M. Norman and Chevron U.S.A. Inc. c/o Andrews Myers, P.C. Patrick A. Kelly 1885 St. James Place 15th Floor Houston TX 75506 Chevron USA Inc Attn: Michael K. Wirth 6001 Bollinger Canyon Road San Ramon CA 94583 Cheyenne Resources LLC PO Box 2177 Oklahoma City OK 73101 Chief Oilfield Services LLC 40 1St Ave West Dickinson ND 58601 Chris & Gerry Mcgree LLC 206 Lester Ave Yakima WA 98902 Christensen Working Interest LLC 2307 Boyd Ave. Midland TX 79705 Chrysalis MSP, LLC c/o Wells & Cuellar, P.C. Attn: James E. Cuellar 440 Louisiana Suite 718 Houston TX 77002 Church Of Latter-Day Saints 139 East South Temple Street Salt Lake City UT 84111 Cimarron Energy Inc PO Box 679882 Dallas TX 75267-9882 Circled Diamond Petroleum LLC PO Box 65 Arnegard ND 58835 Cisco Systems Capital Corp PO Box 742927 Los Angeles CA 90074-2927 Cisco Systems Capital Corporation 9850 Double R Blvd. 1St Floor Reno NV 89521-3859 Citation 2002 Investment LP 14077 Cutten Rd Houston TX 77069-2212 Citibank, N.A. C/O Director Of Derivative Operations Attn: Capital Markets Documentation Unit 388 Greenwich Street 17Th Floor New York NY 10013 Citrix Systems Inc. PO Box 931686 Atlanta GA 31193-1686 Civeo Usa LLC PO Box 912350 Denver CO 80291-2350 Cj Inspection LLC Box 425 Portal ND 58772 Cjm Consulting Inc 428 3Rd Ave E Dickinson ND 58601 Claire Eide Address On File Clarkco Services Inc PO Box 341 Heidelberg MS 39439

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 8 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 12 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Clarkinator I LLC 2046 Brecon Drive Jackson MS 39211 Clean Air Engineering Inc-8684 500 W Wood St Palatine IL 60067 Clean Harbors Disposal Services Inc Po Box 3442 Boston MA 02241-3442 Cleo Tellefson Olson 13750 Longridge Rd Los Gatos CA 95033 Clifford Family Intervivos Tr Address On File Clifford G Stevens Address On File

Coastal Chemical Company A Division Of Coastal, Inc Dept 2214 Po Box 122214 Dallas TX 75312-2214 Coastal Oil & Gas Corporation 600 17Th Street Suite 2110-S Denver CO 80202 Coastal Oil & Gas Usa, L.P. Nine Greenway Plaza Houston TX 77046 Coats Rose Yale Ryman & Lee, P.C. 9 Greenway Plaza, Ste 1100 Houston TX 77046 Cobra Oil & Gas Corp P O Box 8206 Wichita Falls TX 76307-8206 Cody Exploration LLC PO Box 597 Bismarck ND 58502-0597 Cody Farrel Rogers Address On File Coil Tubing Partners LLC PO Box 80822 Lafayette LA 70598-0822 Coldstream Energy LLC 8150 N Central Expy Ste 1550 Dallas TX 75206-1836 Coldstream Energy LLC (Bfx Fabrication LLC And Bfx Infrastructure LLC)-6307 8150 N Central Expy Ste 1550 Dallas TX 75206-1836 Collins & Jones Investments LLC 508 West Wall St Suite 1200 Midland TX 79701 Colorado Cattle Company LLC 109 S Walnut St Kimball NE 69145 Colorado Department of Public Health and Environment 4300 Cherry Creek Drive S Denver CO 80246 Colorado Energ y PO Box 899 Denver CO 80201 Colorado Office Of The Attorney General Ralph L. Carr Judicial Building 1300 Broadway 10th Floor Denver CO 80203 Colorado School Of Mines Foundation Po Box 4005 Golden CO 80402-4005 Colorado Tubulars Company Aztec Pipe Llc 2585 Trailridge Drive E Lafayette CO 80026 Colter Energy Services Usa Inc Dept 3330, PO Box 123330 Dallas TX 75312-3330 Comanche Exploration Co LLC 6520 N Western Ave Ste 300 Oklahoma City OK 73116-7334 Comcast PO Box 37601 Philidelphia PA 19101-0601 Comcast Enterprise Services PO Box 37601 Philidelphia PA 19101-0601 Come Big Or Stay Home LLC 9701 N Broadway Oklahoma City OK 73114 Complete Energy Services Inc PO Box 201653 Dallas TX 75320-1653 Complete Petroleum Inc 2705 Heritage Ct Minot ND 58703 Compsych Corporation 455 N. Cityfront Plaza Chicago IL 60611-5322 Computer Modelling Group Ltd 3710 33 Street Nw Calgary AB T2L 2M1 Canada Computer Modelling Group Ltd. 3710 33Rd Street Nw Calgary AB T2L 2M1 Canada Comstock 5300 Town & Country Blvd #500 Frisco TX 75034-6892 Comstock Oil & Gas LP 5300 Town & Country Blvd #500 Frisco TX 75034-6892 Concord Energ y 1401 17Th Street Suite 1500 Denver CO 80202 Concord Energy LLC 1401 17Th Street Suite 1500 Denver CO 80202 Conocophillips 600 N Dairy Ashford Houston TX 77079 Conocophillips Company 600 N Dairy Ashford Houston TX 77079 Cons Weed Control Service Inc PO Box 1567 Sidney MT 59270 Consolidated Comm Networks Inc PO Box 1408 Dickinson ND 58602 Continental PO Box 952724 St Louis MO 63195-2724 Continental Res PO Box 952724 St Louis MO 63195-2724 Continental Resources PO Box 952724 St Louis MO 63195-2724 Continental Resources Inc 20 N Broadway Ave Oklahoma City OK 73102 Continental Resources Inc(Swd) -8678 PO Box 952724 St Louis MO 63195-2724 Continental Resources Inc. PO Box 952724 St Louis MO 63195-2724 Continental Resources, Inc PO Box 952724 St Louis MO 63195-2724 Continental Resources, Inc. PO Box 952724 St Louis MO 63195-2724 Corcoran Oilfield Services Inc 221 Lomond Lane Billings MT 59101 Core Laboratories Inc PO Box 841787 Dallas TX 75284-1787 Core-Tech Wireline Services Dept 112 Po Box 701683 Tulsa OK 74170 Corey Jay Moen Address On File Corral Bakken LLC 16801 Addison Rd Ste 330 Addison TX 75001 Cottonwood Resources LLC PO Box 966 Chinook MT 59523 Covenant Testing Technologies 1600 Highway 6 Suite 360 Sugarland TX 77478 Covenant Testing Technologies. LLC 1600 Highway 6, Suite 360 Sugarland TX 77478 Cowden Capital Investments LP PO Box 50119 Austin TX 78763 Cp Acquisition LLC 5725 Commonwealth Blvd Sugar Land TX 77479 Craft Electric Inc 2808 S Main St Minot ND 58701 Craig A & Barbara Egeland Address On File Craig A Slawson 2014 Rev Trust Address On File Craig And Barbara Sorenson Address On File Craig Egeland Address On File Crane Creek School District #1 Crawford Enrgy, Inc. 770 South Post Oak Lane Suite 520 Houston TX 77056 Creedence Energy Services LLC PO Box 3480 Minot ND 58702

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 9 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 13 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Crest Resources Inc 15 E 5Th Street Suite 3650 Tulsa OK 74103-4367 Crimson Energy LLC PO Box 64 Gulf Shores AL 36547 Crossfire LLC PO Box 844339 Dallas TX 75284-4339 Crosswind Resources LLC PO Box 1960 Chandler AZ 85244 Crowdstrike 150 Mathilda Pl Sunnyvale CA 94086 Crowell Trucking LLC 1106 Cannon Lane Washburn ND 58577 Crowley Fleck PLLP Attn: Kent Reierson Po Box 1206 Williston ND 58802-1206 P.O. Box Crownqiest Operating, LLC 303 Veterans Airpark Lane Suite 5100 53310 Midland TX 79710 Crozier Oilfield Services Hc 67 Box 176 Whiterocks UT 84085 Cruz Energy Services LLC 10944 27D St Sw Dickinson ND 58601 Crystal Equity Energy LLC 101 Cooper St Ste 4N New York NY 10034 Cs Welding LLC PO Box 1323 Stanley ND 58784 CS Welding, LLC Attn: Cesar Salgado 1101 4th St SE Suite 206 Stanley ND 58784 CTAP, LLC Attn: Seth Merrill 2585 Trailridge Dr East Lafayette CO 80026 Cudd Pressure Control Inc PO Box 203379 Dallas TX 75320-3379 Cudd Pumping Services Inc PO Box 203379 Dallas TX 75320-3379 Cummings Oil Co 5400 N Grand Blvd Ste 100 Oklahoma City OK 73112 Curt & Tammy K Braaflat Address On File Curtis R Trulson Address On File Curt'S Tool Inspection Inc P O Box 804 Vernal UT 84078 Curvature Inc 14416 Collections Center Dr Chicago IL 60693 Custom Chemical Solutions LLC 43 Lane 16 Cody WY 82414 Cutters Wireline Service Inc 11700 Katy Freeway Ste 330 Houston TX 77079 Cvh Trucking 5205 Mellowsun Dr Bismarck ND 58503 Cxa Oil & Gas Holdings LP 1302 West Ave Austin TX 78701 Cyclone Drilling - Drilling 5800 Mohan Rd Gillette WY 82718 Cyclone Drilling Inc 5800 Mohan Rd Gillette WY 82718 Cyndie Mcgenee And Joshua Tylane Cynthia L Lee Address On File Cypress Energ y Mork Swd Llc 5727 S Lewis Ave Ste 300 Tulsa OK 74105 Cypress Energy Partners Williams Swd Llc 5727 S Lewis Ave, Ste 300 Tulsa OK 74105 Cypress Energy Partners LLC-5380 Mork Swd Llc 5727 S Lewis Ave Ste 300 Tulsa OK 74105 Cyrus Land And Royalty PO Box 3025 Oklahoma City OK 73101 D & G Testers & Supply Inc PO Box 70311 Odessa TX 79763 D & L Paraffin Inc PO Box 517 Tioga ND 58852-0517 D C Meter Service PO Box 869 Plains Hwy Denver City TX 79323 D Gregory Comford Address On File D W Hill Address On File D3 Inspection Chad Pittsley Po Box 2023 Tioga ND 58852 Dacotah West Crane Service Inc PO Box 4433 Williston ND 58802 Dakota Carrier Network 4202 Coleman Street Bismarck ND 58503 Dakota Deadman And Anchor Services Llc 1 167Th St Se Norwich ND 58768 Dakota Energy LLC PO Box 516 Fruita CO 81521-0516 Dakota Energy Technologies LLC PO Box 516 Fruita CO 81521-0516 Dakota Fence PO Box 3066 Minot ND 58702-3066 Dakota Hot Shot 3218 111Th H Ave W Ste R Dickinson ND 58601 Dakota Pipe Inspection Inc PO Box 1919 Williston ND 58802-1919 Dakota West Energy LLC PO Box 516 Fruita CO 81521-0516 Dak-Tana Wireline LLC PO Box 733608 Dallas TX 75373-3608 Dale Bakken Partners 2012 LLC 2100 Ross Ave Suite 1870 Dallas TX 75201 Dale Baxte r Address On File Dale Papineau And Carmin Klein-Papineau Address On File Dallas And Christyn Nelson Address On File Dan A. Hughes Company, L.P. P. O. Drawer 669 Beeville TX 78104 Dan Fladelands Well Serv Inc PO Box 99 Velva ND 58790 Daniel Harvey Wolla Address On File Daniel P Manning Address On File Danson Oil PO Box 4308 Williston ND 58802 Darby'S Welding & Machine Inc 78 48Th Ave Sw Dickinson ND 58601 1415 Louisiana Street, Suite Darcy Partners Wedge International Tower 3460 Houston TX 77002 Darius R And Marna Frick Address On File Darrel Kaiser & Deanna Kaiser Address On File Dash Comford Address On File Data Reproduction Services, Inc. 17 Buckingham Court Cartersville, GA 30120 Data Scavenger (Us) Inc. Suite 200 407 3Rd St Sw Calgary AB T2P 4Z2 Canada Database Concepts, Inc. PO Box 2636 Austin TX 78768 Dataimage 1900 Frost Road Ste 100 Bristol PA 19007

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 10 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 14 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Dataimage, Inc 67 West 13490 South, Suite 300 Draper UT 84020 Datatel, Inc. 6200 Humphrey Street Suite I Harahan LA 70123 Dave Norris Consulting LLC PO Box 415 Evanston WY 82931-0415 Dave Norris Consulting LLC Address On File Dave Norris Consulting, LLC PO Box 415 Evanston WY 82931 David A Anderson Address On File David A Farrell Address On File David C Robb Address On File David Halstead Address On File David J Lasse y Address On File David King & Terry L Lawrenson Address On File David Kirk Address On File David L And Sharon Alexander Address On File David L Nelson Address On File David Oneil Address On File David P & Linda K Kjelstrup Address On File David Peterson Address On File David Reed Address On File David Y Rogers Address On File Davis & Davis Company PO Box 9922 Denver CO 80209-0922 Davis Exploration LLC 3330 Cumberland Blvd Se Ste 425 Atlanta GA 30339 Davis Graham & Stubbs LLP 1550 17Th Street Suite 500 Denver CO 80202 Davis Partners Ltd P O Box 271 Midland TX 79702 Dawn F Colvin Address On File Dawson Geophysical Company Inc 508 W Wall Ste 800 Midland TX 79701 Dc Power Tong LLC PO Box 7863 Williston ND 58802 Dcp Midstream, LP 1000 Louisiana Suite 4300 Houston TX 77002 Dcp Midstream, LP Previously Gpm Gas Corporation 1000 Main Street Level 15 Houston TX 77002 Dcp Midstream, LP Previously Phillips Petroleum Company 1000 Main Street Level 15 Houston TX 77002 Ddm Real Estate Trust Address On File Ddm Real Estate Trust, Laurie Abell Address On File Ddt Services PO Box 286 Wibaux MT 59353 Deal Iq Inc First Canadian Place 100 King St West Ste 5700 Toronto ON M5X 1C7 Deal Iq Inc. First Canadian Place 100 King St. West Suite 5700 Toronto ON M5X 1C7 Canada Dean R Bauste Trucking Inc 15224 40Th St Nw Williston ND 58801 Debra Bean Mitchell Address On File Decca Consulting Inc PO Box 512007 Los Angeles CA 90051-0007 Deep Creek Exploration LLC PO Box 1404 Dickinson ND 58602 Deep Rock Resources LLC PO Box 831 Bismarck ND 58502 Deep Rock Resources, LLC PO Box 831 Bismarck ND 58502 Del LLC 13652 Silver Fox Spur Rapid City SD 57702 Deland Todd Castor Address On File Delaware Department Of Justice Carvel State Office Building 820 N French Street Wilmington DE 19801 Delaware Department of Natural Resources and Environmental Control The Richardson & Robbins Building 89 Kings Highway Dover DE 19901 Delek 7102 Commerce Way Brentwood TN 37027 Deloitte & Touche Products Company LLC 695 East Main Street Stamford CT 06901 Delta Petroleum Corporation 825 Town & Country Lane, Suite 1500 Houston TX 77024 4450 Old Canton Road Suite Delta Royalty Co Inc Attn William D Mounger 203 Jackson MS 39211 Demon Oilfield Services Corp 5073 146Th Avenue Nw Williston ND 58801 Denbury Onshore LLC 5320 Legacy Dr Plano TX 75024 Dennis M Lyon Address On File Dennis W Meschke Address On File Dennis W Yockim Address On File Department Of The Air Force, Minot Air Force Base 330 Bomber Blvd Minot ND 58705-5008 Detechtion Usa Inc. 8 Greenway Plaza Ste 1300 Houston TX 77046 Developer Express 505 N Brand Blvd Ste 1600 Glendale CA 91203 Devon 333 W Sheridan Ave Oklahoma City OK 73102-5010 Dexter Atc Field Services LLC PO Box 95441 Grapevine TX 76099-9734 Diamond D Slickline Service Company Inc P O Box 216 Snyder TX 79550 Diamond S Energy Co 6608 Bryant Irvin Rd Ft Worth TX 76132 Diamondback Field Service Inc PO Box 188 Vernal UT 84078 Dianne F Andries Address On File Dianne Russo Address On File 14200 Duke Dickinson Office Lease-8370 Attn: Mcneill Development Llp Keep Safe Storage Hwy Alva FL 33920 Digitalglobe PO Box 911449 Denver CO 80291-1441 Digitalglobe Inc PO Box 911449 Denver CO 80291-1441

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 11 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 15 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Dill Dill Carr Stonbraker & Hutchings, P.C. 455 Sherman St. Suite 300 Denver CO 80203 Dirk A Schwartz Trustee Of Address On File Dirty LLC PO Box 423 Watford City ND 58854 Disa Works 10900 Corporate Centre Drive, Ste. 250 Houston TX 77041 Diversified Equipment LP PO Box 154 Plains TX 79355 Divide Resources LLC 2680 Overland Ave #F Billings MT 59102 Dkne Oil Properties Aragon Intl Investments LLC 4856 E Baseline Rd. Suite 106 Mesa AZ 85206 Dnb Energy Services 109 6Th Ave Se Ste 400 #4161 Watford City ND 58854 Dnow LP PO Box 200822 Dallas TX 75320-0822 Dolores L Mccall Address On File Donald Chudacoff Address On File Donald M Alweis Address On File Donald M. Vanderpol & Irene Vanderpol Address On File Donald R And Phyllis J Link Address On File Donald R And Sharon K Schilke Address On File Donald W Loome r Address On File Donna J Lloyd Address On File Don-Nan Pump & Supply Co Inc P O Box 11367 Midland TX 79702 Dora E Rolfstad Address On File Dorchester Minerals Operating 3838 Oak Lawn Ave Ste 300 Dallas TX 75219-4541 Dorchester Minerals, L.P. c/o Clark Hill Strasburger Attn: Robert P. Franke & Andrew G. Edson 901 Main Street Suite 6000 Dallas TX 75202-3794 Dorothy F Williams Address On File Double D Oil Field Services Llc 622 Antelope Circle Billings MT 59105 Double Ee Service Inc P O Box 2417 Williston ND 58802 Doug And Sharri Cvancara Address On File Douglas & Marla Niemitalo Jt Address On File Douglas Haverberg Address On File Douglas M Cude & Address On File Douglas R & Rosemary Mosse r Address On File Douglas R Mosser Address On File Dragon Products LLC PO Box 3127 1655 Louisiana Street Beaumont TX 77704-3127 DriLLChem Drilling Solutions Llc Po Box 81735 Lafayette LA 70598-1735 Drilling Info Inc PO Box 679093 Dallas TX 75267-9093 Drilling Tools International Inc Po Box 677901 Dallas TX 75267-7901 Dry Fork Ventures LLC 2525 Water Park Loop Se Mandan ND 58554 Duane M Schmidt Address On File Dublin Co PO Box 783 Williston ND 58802-0783 Ducey'S Electric Inc PO Box 606 Rangely CO 81648 Dufford & Brown, P.C. 1700 Broadway, Suite 2100 Denver CO 80290-2101 Dunn & Mckenzie Cos., Nd 206 Dedham St Norfolk MA 02056 Dunn River Resources LLC PO Box 7426 Bismarck ND 58507 Duraroot LLC 4626 County Road 65 Keenesburg CO 80643-8731 Dusty Carroll Address On File Dw Energy Group 104 Decker Court Suite 300 Irving TX 75062-2757 Dw Energy Group, LLC 104 Decker Court Suite 300 Irving TX 75062-2757 Dw Slate LLC 500 Dallas St Ste 1250 Houston TX 77002 Dxp Enterprises Inc PO Box 840511 Dallas TX 75284-0511 Dynamic Well Service Inc PO Box 2736 Williston ND 58802 Dynasty Energy Services LLC PO Box 81566 Lafayette LA 70598 E H Gunter Family Trust Keith E Gunter Succ Ttee 1576 E 101St Ave Thornton CO 80229 E Services LLC PO Box 996 Belfield ND 58622 Eagle Bay Properties LLC 5317 Swan Lane Ne Bemidji MN 56601 Eagle Oil & Gas Co 2525 Kell Blvd, Suite 510 Wichita Falls TX 76308 Eagle Oilfield Rentals LLC PO Box 1382 Minot ND 58702 Eagle-K Properties LLC PO Box 98660 Lubbock TX 79499 Earl Bean Address On File Earls Electric Inc PO Box 576 Williston ND 58802-0576 Earth Service & Abatement LLC 6700 E 50Th Commerce City CO 80022 Ec Energy Partners LP PO Box 191446 Dallas TX 75219-8446 Echo Geophysical Corporation 15995 N. Barkers Landing Suite 110 Houston TX 77079 Eckard Global LLC 906 W Mcdermott Ste 116-363 Allen TX 75013 Eckard Global, LLC 906 W Mcdermott Ste 116-363 Allen TX 75013 Ecopoint Inc 225 Hutton Ave Rifle CO 81650 Ecrime Management Strategies, Inc. (D/B/A Phishlabs) 1501 King St. Charleston SC 29405 Eddye R Greene Williams Address On File Edge Joint Venture Ii Edi Q2 Als LLC PO Box 206847 Dallas TX 75320-6847 Edward Baxte r Address On File

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 12 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 16 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Edward G Arildson Address On File Edward I Schilke Address On File Edward Street Fernandes Address On File Edward Tann Jr Address On File Edwin & Myrtle Newcomb Route 2, Box 8 Grassy Butte ND 58634 Ehs Inc 2121 N Frontage Rd W #247 Vail CO 81657 Eighty-Eight Oil P.O. Drawer 2360 Casper WY 82602 Eighty-Eight Oil LLC 1000 Main Street Level 15 Houston TX 77002 Eighty-Eight Oil LLC 1300 Main Street 9Th Floor Houston TX 77002 Eighty-Eight Oil LLC 1600 Broadway Suite 2400 Denver CO 80202 Eighty-Eight Oil LLC P.O. Drawer 2360 Casper WY 82602 Eighty-Eight Oil LLC, an Affiliate of True Oil Company c/o Snow Spence Green LLP Attn: Kenneth P Green 2929 Allen Parkway Suite 2800 Houston TX 77019 Eighty-Eight Oil, LLC P.O. Drawer 2360 Casper WY 82602 EJS Investment Holdings, LLC c/o McDowell Hetherington LLP Attn: Jarrod B. Martin 1001 Fannin Street Suite 2700 Houston TX 77002 El Paso Production Co. 1001 Louisina Street, Suite 2731B Houston TX 77002 Elaine Ziskind Address On File Elan Minerals PO Box 10 Homer City PA 15748 Elberstine Washington Bean Address On File Eleanor Trotter Address On File Electric Motor Repair Inc 723 North Main Denver City TX 79323 Element Fleet PO Box 100363 Atlanta GA 30384-0363 1201 N Market Street, Suite Element Fleet Corporation c/o Saul Ewing Arnstein & Lehr LLP Attn: John D. Demmy 2300 PO Box 1266 Wilmington DE 19899 Elite Hot Oil Inc PO Box 1369 Sidney MT 59270 Elite Inspection Services Inc PO Box 1919 Williston ND 58802-1919 Elite Lift Solutions LLC PO Box 18 Harwood ND 58042 Elite Oil Field Services LLC PO Box 11 Kimball NE 69145 Elite Pipeline Services Inc PO Box 1130 Colorado City TX 79512 Elite Power LLC 3675 8Th St E Dickinson ND 58601 Elite Safety Incorporated 1918 S County Road 1085 Midland TX 79706 Elite Services Inc 261 Terra Vista St Brighton CO 80601 Elizabeth Bush Irish Address On File Elizabeth Reese Sower Address On File Elkhorn Well Service LLC 12697 30Th St Nw Belfield ND 58622 Ellayne M Tracey Address On File ELLCo Resources Inc 4960 S Gilbert Rd Suite 1-479 Chandler AZ 85249 Ellen Collyer Address On File Elliott Oil Company PO Box 786 Sidney MT 59270 Elliott Oil Corp PO Box 786 Sidney MT 59270 Elresa Louise Pembrook Address On File Elsr, LP 8080 N. Central Expressway Ste. 1420 Lb 12 Dallas TX 75206 Elvin Walton Address On File Emerald Oil, Inc. 1600 Broadway Ste 1360 Denver CO 80202 Emerald Oil, Inc. Attn: Mcandrew Rudisill 1600 Broadway Suite 1360 Denver CO 80202 Emerald Wb LLC 200 Columbine Street Suite 500 Denver CO 80206 Emit Technologies Inc PO Box 6785 Sheridan WY 82801 Emk3 917 Quarry Oaks Fairview TX 75069 Empire Oil PO Box 1835 Williston ND 58802-1835 Encana Oil & Gas (Usa) Inc 370 17Th Street Suite 1700 Denver CO 80202-5632 Endeavor Energy Resources 110 N Marienfeld Suite 200 Midland TX 79701 Endura Products Corp 400 W Illinois Ste 100 Midland TX 79701 Endurance Lift Solutions LLC PO Box 843175 Dallas TX 75284-3175 Enduring Block 6515 Lussier Dr Sugar Land TX 77479 Enduring Block LLC 6515 Lussier Dr Sugar Land TX 77479 Enduring Block LLC-8275 6515 Lussier Dr Sugar Land TX 77479 Enerflex 18452 E 111Th St Broken Arrow OK 74011-9408 Enerflex Energy Systems 10815 Telge Road Houston TX 77095 Enerflex Energy Systems Inc 10815 Telge Road Houston TX 77095 Enerflex Energy Systems, Inc. -2877 10815 Telge Road Houston TX 77095 Energy 11 814 E Main St Richmond VA 23219 Energy 11 Operating Co LLC 814 E Main St Richmond VA 23219 Energy Eleven, L.P. c/o Whitaker Chalk Swindle & Schwartz PLLC Attn: Robert A. Simon 301 Commerce Street Suite 3500 Fort Worth TX 76102 Energy Exchange 3, L.P. (Dba Emk3) 1415 Legacy Drive Suite 220 Frisco TX 75034 Energy Gas Compression Inc PO Box 928 Corpus Christi TX 78403 Energy Gas Compression, Inc-7068 PO Box 928 Corpus Christi TX 78403 Energy Ii Energy One LLC 950 S Cherry St Unit 1515 Denver CO 80246 Energy Partners Consulting LLC 30 N Gould St Ste 2163 Sheridan WY 82801 Energy Resources 12 Operating Company Llc 814 E Main St Richmond VA 23219

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 13 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 17 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Energy Transfer Energyiq 2329 W. Main Street Suite 300 Littleton CO 80120 Energylink Holdings LLC (Dba Reddog Systems Inc.) PO Box 675083 Dallas TX 75267-5083 Enerstar Rentals & Services Ltd 102 579-3Rd St Se Medicine Hat AB T1A 0H2 Canada Enervus (Drilling Info, Inc.) 2901 Via Fortuna Building 6 Suite 200 Austin TX 78746 Building 6 Suite Enervus (Drilling Info, Inc.) Attn: Shawn Shillington 2901 Via Fortuna 200 Austin TX 78746 Engage Mobile LLC-8685 2930 Umatilla St, Suite 300 Denver CO 80211 Engage Mobilize, LLC 2930 Umatilla St, Suite 300 Denver CO 80211 Energy LLC 1490 West Canal Court Ste 3000 Littleton CO 80120-4529 England Energy LLC 1490 West Canal Court Ste 3000 Littleton CO 80120-4529 654 N Sam Houston Pkwy E Englobal Us Inc Attn Deposits #400 Houston TX 77060-5914 Enovapoint, Uab 1692 Maryland St Redqood City CA 94061 Enterpise Hydrocarbons L.P. 1100 Louisiana Suite 1500 Houston TX 77002-5227 Enterprise Fleet Management Inc Customer Billing Po Box 800089 Kansas City MO 64180-0089 Entrust Inc. 5420 Lbj Freeway Suite 300 Dallas TX 75240 Environmental Materials PO Box 22745 Billings MT 59104 Environmental Systems Research Institute Inc File 54630 Los Angeles CA 90074-4630 Environmental Systems Research Institute, Inc. 380 New York Street Redlands CA 92373-8100 Eog PO Box 840321 Dallas TX 75284-0321 Eog Resources PO Box 840321 Dallas TX 75284-0321 Eog Resources Inc P. O. Box 840319 Dallas TX 75284-0319 Eog Resources Inc PO Box 840321 Dallas TX 75284-0321 Eog Resources Inc., Previously Pecan Pipeline (North Dakota). Inc. PO Box 4362 Marketing Administration Houston TX 77210-4362 1133 College Eog Resources, Inc C/O Fredrickson & Byron P.A. Attn: Lawrence Bender Drive #1000 Bismarck ND 58501 Eog Resources, Inc P. O. Box 840319 Dallas TX 75284-0319 Eog Resources, Inc PO Box 840321 Dallas TX 75284-0321 1133 College Eog Resources, Inc. C/O Fredrickson & Byron P.A. Attn: Lawrence Bender Drive #1000 Bismarck ND 58501 Eog Resources, Inc. P. O. Box 840319 Dallas TX 75284-0319 Epplus Software Ab Skattegårdsvägen 360 Vällingby S-162 45 Sweden Building 2 - Energy LP Attn: Land Department 6300 Bridge Point Parkway Suite 100 Austin TX 78703 Equinor Energy LP PO Box 732221 Dallas TX 75373-2221 400 Convention Street, Suite Equinor Energy LP c/o Kean Miller LLP Attn: J. Eric Lockridge 700 PO Box 3513 Baton Rouge LA 70802 Equinor Marketing & Trading 120 Long Ridge Road, Suite 3Eo1 Stamford CT 06902 Equinor Oil PO Box 732221 Dallas TX 75373-2221 Erickson Family Trust Address On File Ernest G Wolla J r Address On File Ernst & Young Pnc Bank C/O Ernst & Young Us 3712 Solutions Center Chicago IL 60677-3007 Ernst & Young LLP Suite 3300 370 17Th Street Denver CO 80202 Es Land & Livestock LLC PO Box 311 Kaycee WY 82639 Estancia Petroleum Corp PO Box 8478 Denver CO 80201 Estate Of Frank J Bavendick Address On File Estate Of Joseph P Scanlan, Wayne D Scanlan - Pr Address On File Estate Of Richard Siegal Address On File Estvold Consulting LLC Dale Estvold 4011 84Th Ave Nw New Town ND 58763 Estvold Oilfield Services Inc Attn: Jake Estvold 3962 84th Ave NW New Town ND 58763 Estvold Oilfield Services, Inc Jake Estvold Po Box 1191 New Town ND 58763-1191 Etc Field Services, LLC 1600 Stout St Suite 1200 Denver CO 80202 Evans Services, LLC 1000 12Th St. Golden CO 80401 Evenson Consulting Inc 3707 7Th St W Apt 422 Williston ND 58801 Everett Ranches PO Box 107 Breckenridge TX 76024 Evertson Energy Partners LLC P O Box 397 Kimball NE 69145 Evironmental Systems Research, Inc. 380 New York Street Redlands CA 92373

Evo Incorporated Ev Downhole Video 1557 W Sam Houston Pkwy N Ste 100 Houston TX 77043 Evolution Completions Inc PO Box 1005 Sidney MT 59270 Evolution Hydrotesting LLC 3702 Hw 58 Fairview MT 59221 Evolution Management Inc 409 8Th Ave E Williston ND 58801 Exceed Oilfield Equipment Inc 8300 Cypress Creek Pkwy Ste 400 Houston TX 77070 Executive Land Services, Inc PO Box 1640 Edmond OK 73083 Expertool LLC 1025 17Th St Se Minot ND 58701 Exploration & Development Co Inc 2801 Nw 57Th Street Oklahoma City OK 73112 Exploration & Development Co., Inc 2801 Nw 57Th Street Oklahoma City OK 73112

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 14 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 18 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country , Inc. 310 W. Wall Suite 700 Midland TX 79701 Explornation Energy Inc PO Box 131420 Spring TX 77393 Exterran Energy Solutions LP / Archrock PO Box 205805 Dallas TX 75320-5805 Exterran Energy Solutions-1097 PO Box 205805 Dallas TX 75320-5805 Extreme Underground Hdd LLC PO Box 1406 Dickinson ND 58602 Exxon Mobil Corporation P O Box 951027 Dallas TX 75395-1027 Exxonmobil Exploration Company 233 Benmar Drive Houston TX 77060 F & D Oilfield Maintenance Inc PO Box 88 Baker MT 59313 F Douglas Tuffle y Address On File F L Dunn Iii Investments LLC 1700 Sw Blvd Tulsa OK 74107 F.O. Griffin Address On File Fairchild Windham Expl Co PO Box 15909 Hattiesburg MS 39404-5909 Falcon Technologies & Services Inc Po Box 734260 Dallas TX 75373-4260 Farrell Wellness Venture LLC 1310 33Rd Street Ne Arvilla ND 58214 Fastenal Company-4798 PO Box 978 Winona MN 55987-0978 Fastspring 801 Garden Street Santa Barbara CA 93101 Faye N Brownlee Address On File Feather River 75 LLC 5910 North Central Expressway Suite 1662 Dallas TX 75206 Federal Communications Commission-8388 Office Of The Secratary, 445 12Th Street Sw Washington DC 20554 Felecie Dressle r Address On File Fender Exploration Production PO Box 8720 Tyler TX 75711-8720 Fern Imme Address On File Ferrellgas Partners L.P. Attn: Rick Frawley One Liberty Plaza Liberty MO 64068 Fidelity Exploration And Production Co 1700 Lincoln St, Suite 2800 Denver CO 80203 Fidelity Exploration And Production Company 1625 Broadway Ste 900 Denver CO 80202 Attn: Capital Markets Trade Fifth Third Bank 38 Fountain Square Plaza Operations - Md10903C Cincinnati OH 45202 Fig 2013 Drilling And 7290 Virginia Pkwy Ste 3200 Mckinney TX 75071 Flare Industries LLC 16310 Bratton Lane Bldg 3 Ste 350 Austin TX 78728 Flatirons Resources LLC 10385 Westmoor Dr Ste 225 Westminster CO 80021 Flatirons Resources LLC Attn: John Chandler 11808 Circle Point Road Suite 180 Westminster CO 80020 Flatland Ag Holdings LLLP 4391 115Th Ave Nw Watford City ND 58854 Fletcher Properties LP 530 East Academy Street Po Box 77 Canton MS 39046 Flex Flow Services LLC (Contract With Gr Lift LP (Gr Energy Services)) Dept 490 Po Box 4346 Houston TX 77210-4346 Flint Hills Resources, LP PO Box 2917 Wichita KS 67201-2917 Flint M Bible r Address On File Flogistix LP PO Box 731389 Dallas TX 75373 Flogistix LP-4192 PO Box 731389 Dallas TX 75373 Flogistix LP-6219 PO Box 731389 Dallas TX 75373 Flow-Cal Inc Address On File Flow-Cal, Inc. (Owned By Quorum Business Solutions) PO Box 58965 Houston TX 77258-8965 Flowco Production Solutions Dept 229 Po Box 4458 Houston TX 77210-4458 Flowcore Systems 4401 16Th Ave W Ste B Williston ND 58801 Follman Consulting 6675 Willow Rd N Towner ND 58788 Fortin Enterprises Inc PO Box 3129 Palm Beach FL 33480 Fortinet 899 Kifer Road Sunnyvale CA 94086

9200 Indian Foulston Siefkin LLP 9 Corporate Woods Suite 450 Creek Parkway Overland Park KS 66210-2017 Foundation Energy Management, LLC 16000 North Dallas Parkway Suite 875 Dallas TX 75248 Four Corners Petroleum Ii, LLC 390 Union Blvd. Suite 630 Lakewood CO 80228 Foz Enterprises Trust Frank C Ozak Ttee 2531 Sawtelle Blvd Los Angeles CA 90004 Frances Radecki Address On File Frandson Safety Inc P O Box 1848 Worland WY 82401 Frank Jeppi Bypass Trust Address On File Frank P Willis Iii Address On File Franz Construction Inc P O Box 1046 Sidney MT 59270 Frear Consulting Inc Dba Fci Consulting & Inspection Po Box 50245 Bellevue WA 98015-0245 Freddie Wheeler Hurt Moore Address On File Freddie Wheeler Hurt Moore Address On File Freepoint Commodities LLC 1600 Stout St Suite 1200 Denver CO 80202 Frontline Consulting LLC 2900 41St Ave Greeley CO 80634 Frost Back Consulting 81 Krause Lane Kalspell MT 59901 Fugro Airborne Surveys Dorp. 2060 Walkley Road Ottawa ON K1G 3P5 Canada Fuzion Field Services LLC PO Box 200638 Evans CO 80620 G & G Garbage LLC PO Box 1178 Baker MT 59313 G & J Heller Family Mineral Tr Address On File G & W Trucking Inc PO Box 10383 Midland TX 79702

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 15 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 19 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country G E Mckissack Address On File G G Rose LLC 6730 N Scottsdale Rd # 270 Scottsdale AZ 85253 G Kent Ellis Address On File G Style Transport LLC PO Box 2104 Williston ND 58802 G4 LLC/Oil Partners 2200 Pirates Loop Se, #5 Mandan ND 58554 Gadeco LLC 7535 E Hampden Ave Ste 400 Denver CO 80231 Gaedeke Williston Basin Holdings Ltd 3710 Rawlins St Ste 1100 Dallas TX 75219 Gardenia Inc PO Box 11044 Midland TX 79702 Garland Brothers LLC 701 9Th St Ne Springhill LA 71075 Garrett Wellington Greene Address On File Garth L. Harmon, Wagner Harmon and Shotgun Creek Developments, LLC c/o Jones, Gillaspia & Loyd LLP Attn: John Bruster "Bruse" Loyd 4400 Post Oak Parkway Suite 2360 Houston TX 77027 Gary F Hapip Address On File Gary L Warnke Address On File Gasper E Mascarenas Address On File Gbk PO Box 21468 Tulsa OK 74121-1468 Gbk Investment L.L.C. Attn: Don Millican 6733 South Yale Avenue Tulsa OK 74136 Gbk Investments LLC PO Box 21468 Tulsa OK 74121-1468 Gbk Investments, L.L.C. 6733 South Yale Avenue Tulsa OK 74136 Gemini Solutions Inc 702 Morton Street Richmond TX 77469 Gene Helle Address On File General Networks 3524 Oceanview Blvd Glendale CA 91208 General Networks Coporation-8710 3524 Oceanview Blvd Glendale CA 91208 General Networks Corp 3524 Ocean View Blvd Glendale CA 91208 Genscape PO Box 417749 Boston MA 02241-7749 Geo Drilling Fluids Inc P O Box 1478 Bakersfield CA 93302 Geoedges Inc #1440, 510-5Th Street Sw Calgary AB T2P 3S2 Canada Geokinetics Usa Inc 1500 City West Blvd. Suite 800 Houston TX 77042 Geokinetics Usa, Inc. 1500 City West Blvd. Suite 800 Houston TX 77042 Geomap Compan y 1100 Geomap Lane Plano TX 75074-7135 Geophysical Pursuit Inc 1740 Westheimer Suite 200 Houston TX 77098 Geophysical Pursuit, Inc. 1740 Westheimer Suite 200 Houston TX 77098 Georesources Inc 5007 Pacific Highway East, Suite 16 Fife WA 98424 George G Vaught J r Address On File George S Dennis Address On File Gerald Frederickson Address On File Gerald L Patterson & Address On File Gerald L Patterson & Sharon Patterson Address On File Gerald W Mccrummen And Diana R Address On File Getech Inc 3000 Wilcrest Drive Suite 155 Houston TX 77042 Getech Inc. 3000 Wilcrest Drive Suite 155 Houston TX 77042 Ghgsat Inc. 500-3981 St-Laurent Montreal QC H2W 1Y5 Canada Gilbert T Ridl Address On File Giles Energy Inc 5902 Corinthian Park Drive Spring TX 77379 Gillian Mcgrane Address On File Glacier Oilfield Services Inc 7345 Highway 789 Lander WY 82520 Glenn Peter Helling Address On File Glenn Stenehjem And Vicky Stenehjem Address On File Glines Electric LLC PO Box 221 Buffalo SD 57720 Global Global Gas & Oil LLC 1825 Harbor Drive Bismarck ND 58504 Global Geophysical 1900 North Loop West Ste. 200 Houston TX 77018 Global Geophysical Services, Inc. 13927 South Gessner Missouri City TX 77489 Go Wireline LLC PO Box 1343 Williston ND 58801 Gold Coast Energ y 4531 Silver Gate Dr Castle Pines CO 80108 Goldenwest Electric Co-Op Inc-4901 119 1St Ave Sw Po Box 177 Wibaux MT 59353 Good Shepherds Royalty Trust Dustin J Stuber & Suzanne M Young, Trustees Po Box 1404 Dickinson ND 58602 Goodnight Midstream 5910 N Central Expwy Ste 630 Dallas TX 75206 Goodnight Midstream (Fka: 1804 Operating LLC) 1804 Swd Llc 5727 S Lewis Ave, Ste 300 Tulsa OK 74105 Goodnight Midstream Bakken LLC (1804 Operating LLC)-4929 5910 N Central Expwy Ste 630 Dallas TX 75206 Gordan Reese Iii Address On File Gordon Arata Montgomery Barnett Attn: John Y. Pearce 201 St. Charles Avenue 40Th Floor New Orleans LA 70170-4000 Gordon J Kostelecky Address On File Gr Energy Services 2150 Town Sq. Pl. Ste. 410 Sugar Land TX 77479 Graceton LP P O Box 10 Homer City PA 15748 Graco Fishing & Rental Tools Inc Dba Graco Oilfield Services 5300 Town & Country Blvd Ste 220 Frisco TX 75034-6890 Grammarly Inc 548 Market Street Suite 35410 San Francisco CA 94104 Granite Peak Energy Et Al Attn: Josh Jamison 1300 Venture Way Suite 200 Casper WY 82609 Gravity Oilfield Services LLC PO Box 734128 Dallas TX 75373-4128

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 16 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 20 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Greaser LLC 4900 Canyon Dr Reno NV 89519-2908 Great Barrier Energy LLC 5555 Dtc Parkway Ste 310 Greenwood Village CO 80111 Great Plains Analytical Address On File Grebron Oil LLC 7194 107Th Avenue Clear Lake MN 55319 Green Oil Company 4520 12Th St. Ne Fessenden ND 58438 Green River Energy Resources 186 Dawn Dr Columbia Falls MT 59912 Greenberg Traurig 333 Se 2Nd Avenue Suite 4400 Miami FL 33131 Systems Ltd 9 Greenway Plaza, Suite 1260 Houston TX 77046 Greenergy Systems Ltd-3429 9 Greenway Plaza, Suite 1260 Houston TX 77046 Greenhead Energy Inc PO Box 4204 Bismarck ND 58502 Greenstar Resources LLC 770 W Rock Rd Norman OK 73019 Greg Loken Address On File Greg Loken And Beth Loken Address On File Gregs Welding Inc PO Box 1807 Gillette WY 82717 Grep Iii - A Bakken LLC 2911 Turtle Creek Blvd Suite 1150 Dallas TX 75219 Grep Iii - B Bakken LLC 2911 Turtle Creek Blvd Suite 1150 Dallas TX 75219 Grep William LLC 2911 Turtle Creek Blvd Ste 1150 Dallas TX 75219 Grep Wolverine LLC 2911 Turtle Creek Blvd Ste 1150 Dallas TX 75219 Greyrock Cementing Inc PO Box 1751 Vernal UT 84078 Grigsby & Heredeen Address On File Grisby & Herendeen Address On File Ground Truth Consulting LLC 1 World Trade Ctr Ste 60 New York NY 10007 Groupe Sharegate Inc Dba: Sharegate 1751 Richardson Street Suite 5400 Montréal QC H3K 1G6 Canada Gst Casing Inc PO Box 2104 Williston ND 58802 G-Style Transport, LLC; GST Casing, LLC; and All In Oil Field 5430 Lyndon B Johnson Services; LLC c/o Shapiro Bieging Barber Otteson LLP Attn: John C. Leininger Freeway Suite 1540 Dallas TX 75240 Gt Reed & Associates LLC 17737 E Belleview Pl Centennial CO 80015 Guida Peterson Family Trust Address On File Gulf Coast Lease Service Inc PO Box 1541 El Campo TX 77437 Gulf Coast Weed Control LLC PO Box 368 Refugio TX 78377 Gulfmark PO Box 844 Houston TX 77001 Gulfmark Energy Inc 5 Post Oak Park Suite 2700 Houston TX 77027 Gulfmark Energy, Inc. 1600 Stout St Suite 1200 Denver CO 80202 Gulfmark Energy, Inc. 5 Post Oak Park Suite 2700 Houston TX 77027 Gunsmoke Production Company 1720 Wazee St Suite 2E Denver CO 80202 Gustafson Septic Service Inc 6746 Hwy 8 Stanley ND 58784 Gv & A LLC 500 W 2Nd St Ste 1900 #29 Austin TX 78701 Gyrodata Inc PO Box 650823 Dept 41240 Dallas TX 75265 H & E Resources LLC 1319 High Creek Road Bismarck ND 58503 H & H Electric Inc PO Box 2167 Williston ND 58801 H & H Versatile Services Inc-2107 PO Box 1145 Vernal UT 84078 H J Mohlenhoff Address On File H L Fairchild Address On File H S Swan Address On File H Thomas Moran Address On File H&L Rental & Well Service Inc PO Box 667 Eufaula OK 74432 H&S Resources H-2 Enterprises LLC 4626 County Rd 65 Keenesburg CO 80643 H2E Incorporated 808 N Main St Spearfish SD 57783 Haddad & Brooks Inc PO Box 776 Washington PA 15301 Hagman Trucking Inc 6729 W Lake Borem Rd Myton UT 84052 Haimo Oil & Gas LLC 2901 Wilcrest Dr Ste 285 Houston TX 77042 Hall Trucking Inc PO Box 468 Dickinson ND 58602 Energy Services PO Box 301341 Dallas TX 75303-1341 Halliburton Energy Services Inc Attn: Jeff Miller 3000 N. Sam Houston Pkwy E. Houston TX 77032 Halliburton Energy Services-113 PO Box 301341 Dallas TX 75303-1341 Hamilton Consulting Inc 1160 Harmon Way Bozeman MT 59718 Hancock Enterprises Address On File Hapip Investments LLC 8315 S Homestead Ln Tempe AZ 85284 Harbison Fischer Inc 901 N Crowley Rd Crowley TX 76036 Hard Luck Attn: Kent Fetzer Po Box 1435 Bismarck ND 58502-1435 Hard Luck Oil Properties LLC Attn: Kent Fetzer Po Box 1435 Bismarck ND 58502-1435 Harms & Leier Ltd PO Box 895 Bismarck ND 58502-0895 Harold Frederickson Address On File Harold I Tofte Address On File Harrell J Tippitt Address On File Harris R Fender Jr Address On File Harstad Farms, LLLP 8048 58Th St Nw Stanley ND 58784 Harstad Trucking Address On File

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 17 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 21 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Hartford Life And Accident Insurance Co. (The Hartford) One Hartford Plaza Hartford CT 06155 Harvest Energy 2230 Rte 10 Morris Plains NJ 07950 Harvest Energy Inc 2960 Center Green Ct Boulder CO 80301 Harvey Frederickson Address On File Hattie H Froehlich Address On File Hazel Zimmer Address On File Hea Petroleum LLC 1020 Yale Columbia MO 65203 Headington Oil Company LLC 1700 N Redbud Blvd Suite 400 Mckinney TX 75069 Heat Waves Hot Oil Service LLC Dept 3782 Po Box 123782 Dallas TX 75312-3782 Heather Blahm Address On File Hedberg Oil Co LLC PO Box 470337 Ft Worth TX 76147 Hedloc Investment Co LP 508 W Wall St Midland TX 79701 Heirs/Devisees Of James Helling Address On File Helen Dunleav y Address On File Helen L Kolberg Estate Address On File Hellervik Oilfield Technologies LLC-6666 Technologies 401 E Broadway Ave Ste 200 Bismarck ND 58501 Helm Energy LLC 5251 Dtc Parkway #425 Greenwood Village CO 80111 Henry Allen And Linda Hellyer Address On File Herbaly Exploration LLC 1420 W Canal Ct Suite 210 Littleton CO 80120 Herman L Loeb LLC 10760 Country Club Road Po Box 838 Lawrenceville IL 62439 Hess 1185 Avenue Of The Americas New York NY 10036 Attn: Sallie Hess Bakken Investments I Corp 501 Mckinney St 14Th Floor Land Assets Mngmt Carlisle Houston TX 77010 Hess Bakken Investments I Corp F1 13 Attn: Us Joint Venture Acctg Po Box 2040 Houston TX 77252-2040 Attn: Sallie Hess Bakken Investments Ii LLC 501 Mckinney St 14Th Floor Land Assets Mngmt Carlisle Houston TX 77010 Hess Bakken Investments Ii LLC PO Box 2040 Houston TX 77252 Hess Corporation Attn Jv Dept PO Box 201544 Houston TX 77216-1544 Hess Corporation Hess Tower 1501 Mckinney Houston TX 77010 Hexabyte Consulting PO Box 202167 Denver CO 80220 Hicks-Laurence-Warden Address On File High Plains Transport Inc. PO Box 1106 Watford City ND 58854 High West Energy PO Box 519 6270 County Rd 212 Pine Bluffs WY 82082-0519 Attn: Keith M. Aurzada, Michael P. Cooley, & High West Energy Inc. c/o Reed Smith LLP Lindsey L. Robin 2501 N Harwood Suite 1700 Dallas TX 75201 High West Energy Inc-6921 6270 Co Rd 212 Pine Bluffs WY 82082-0519 High West Energy, Inc. 6270 Co Rd 212 Pine Bluffs WY 82082-0519 Highland Partners Holdings LLC PO Box 734024 Dallas TX 75373-4024 Highlands Engineering & Surveying Pllc 319 24Th St East Dickinson ND 58601 Highpeak Energy Assets Ii 421 W 3Rd St Ste 1000 Fort Worth TX 76102 Highpeak Energy Holdings LLC, Steve Smith 421 W 3Rd St Ste 1000 Fort Worth TX 76102 Highway 26 Consulting 11652 W Hialeah Pl Littleton CO 80127 Hiland Crude PO Box 734024 Dallas TX 75373-4024 Hiland Crude, LLC 19100 Ridgewood Parkway San Antonio TX 78529 Hiland Partners Holdings LLC 19100 Ridgewood Parkway San Antonio TX 78529 Hiland Partners Holdings LLC 8811 South Yale Suite 200 Tulsa OK 74137-3650 Hiland Partners Holdings LLC c/o Law Office of Patricia Williams Prewitt Attn: Patricia Williams Prewitt 10953 Vista Lake Court Navasota TX 77868 Hiland Partners Holdings, LP 19100 Ridgewood Parkway San Antonio TX 78529 Hiland Partners LP 19100 Ridgewood Parkway San Antonio TX 78529 Hi-Line Trucking Inc PO Box 1066 Sidney MT 59270 Hill + Knowlton Strategies 237 Park Avenue 4Th Floor New York NY 10017 HiLLCorp Energy I LP Dept. 412 Houston TX 77210 Hillstone Environmental (Fka: Sbg Energy Services, LLC) PO Box 13238 Grand Forks ND 58208 Hillstone Environmental Partners-6454 1 Riverside Sq Mall Hackensack NJ 07601 Hinkle, Hensley, Shanor & Martin, L.L.P. 218 Montezuma Santa Fe NM 87501 Hireright, LLC 14002 E. 21St Street, Suite 1200 Tulsa OK 74134 Hlebechuk Construction Inc PO Box 738 Belfield ND 58622-0738 Hogan Lovells Us LLP One Tabor Center, Suite 1500 1200 Seventeenth Street Denver CO 80202 Holly Watson Address On File Horab Transport Company PO Box 4005 Williston ND 58802-4005 Horizon Energy Services LLC 251 Prairiewood Dr S Fargo ND 58103 Horizon Resources Inc 317 2Nd St West Williston ND 58801 Horse Creek Energy LLC 510 South Gillette Ave Gillette WY 82716 Hot Wheels Services 35013 Cty Rd 126 Sidney MT 59270 Houston Pipe Line Company LP PO Box 204317 Dallas TX 75320-4317 Howard Energy Co. 13561 W. Bay Shore Suite 3000 Traverse City MI 49684 Howie Township 8861 34Th St Nw New Town ND 58763-9632 Hrl Compliance Solutions Inc 2385 F 1/2 Road Grand Junction CO 81505 Huco Consulting Inc 419 E 23Rd St Houston TX 77008

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 18 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 22 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Huco Consulting, Inc. 419 East 23Rd Street Houston TX 77008 Hugo J Asbeck & James F Asbeck Address On File Hunt Oil Co 1900 N Akard St Dallas TX 75201 Hunt Oil Company 1900 N Akard St Dallas TX 75201 Hunt Oil Company c/o Dykema Gossett PLLC Attn: Mark E. Andrews & Patrick Huffstickler 1717 Main Street Suite 4200 Dallas TX 75201 Hunt Oil Company c/o Dykema Gossett PLLC Attn: Patrick Huffstickler 112 E. Pecan Street Suite 1800 San Antonio TX 78205 Hurley Enterprises Inc PO Box 385 Fairview MT 59221 Hurley Oil Properties Inc 1738 South Poplar Street Casper WY 82601 Hurt Properties LP PO Box 1927 Abingdon VA 24212 Hutton Oil Wog Co LLC 16761 Coral Cay Ln Huntington Beach CA 92649 Hydra Services LLC (Affiliate Of Kraken Oil And Gas Ii LLC) Hydra Services LLC-8680 9805 Katy Freeway Ste 300 Houston TX 77024 Hydrostatic LLC PO Box 8416 Williston ND 58802-8416 Hydrus Energy Solutions 109 6Th Ave Ste 400 #4178 Watford City ND 58854 Hymco Dp, LLC 215 S Laurel Ave Broken Arrow OK 74012 Hystad Consulting LLC 1974 84Th Ave Se Buchanan ND 58420 Hystad Family LLP 3379 134Th Ave Nw Arnegard ND 58835 Ibra-Rmac Automation Systems Llc 13223 Black Mountain Rd #1-125 San Diego CA 92129 Icon Petroleum Inc 1411 W Illinois Ave Midland TX 79701 Idera, Inc. 2950 North Loop Freeway West Suite 700 Houston TX 77092 Idm Computer Solutions 5559 Eureka Dr Suite B Hamilton OH 45011 Ihd Solids Management LLC-4790 PO Box 912930 Denver CO 80291 Ihs Global Inc PO Box 847193 Dallas TX 75284-7193 Ihs Global Inc. 15 Inverness Way East Englewood CO 80122 Ihs Markit 450 West 33Rd Street 5Th Floor New York NY 10001 Imperative Chemical Partners PO Box 679330 Dallas TX 75267-9330 Of North Dakota Inc 1648 Poly Dr #101 Billings MT 59102 Impulse Downhole Tools Usa Ltd 546 Stonegate Dr Katy TX 77494 Indeed PO Box 660367 Dallas TX 75266 Independent Pump & System Management Llc Po Box 837 Farmington NM 87499 Independent Reservoir Analyst Services 3363 W 35Th Ave Denver CO 80211 Indian Fire And Safety Inc 3317 West County Rd P O Box 1306 Hobbs NM 88241-1306 Indmar & Marine Service Co PO Box 37 Pearland TX 77588 Industrial & Marine Service Co (Indmar Service & Supply Corp)- 3434 PO Box 37 Pearland TX 77588 Industrial Electric Service Inc 388 Gta Drive Dickinson ND 58601-7241 Industrial Equipment Sales & Service Inc Po Box 11444 Williston ND 58803 Industrial Horsepower Plus Inc PO Box 845 Vernal UT 84078 Industrial Scientific Corpora- Tion Po Box 645449 Pittsburgh PA 15264-5252 Industrysafe, Inc. 1608 Walnut Street Suite 700 Philadelphia PA 19103 Inez Burk Address On File Inland O&G PO Box 1313 419 Riverwood Dr Ste 101 Bismarck ND 58502-1313 Inland Oil & Gas Corp PO Box 1313 419 Riverwood Dr Ste 101 Bismarck ND 58502-1313 Innovative Land Dev Inc 2043 Shane Ct Oxford MI 48370 Innovex Downhole Solutions PO Box 679456 Dallas TX 75267-9456 Insight PO Box 731069 Dallas TX 75373-1069 Intelepeer Cloud Communications LLC 155 Bovet Road Suite 405 Attn: Cfo San Mateo CA 94402 Intelex 70 Univeristy Avenue Suite 800 Toronto ON M5J 2M4 Canada Intelex Technologies 70 University Avenue Suite 800 Toronto ON M5J 2M4 Canada Intermountain Electronics Inc Of Price Utah Po Box 914 Price UT 84501 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 Intralinks, Inc. 685 Third Avenue, 9Th Floor New York NY 10017 811 Main St Iocl Usa Inc C/O Thompson & Knight Llp Attn Arthur Wright Ste 2500 Houston TX 77002-4499 Iog Nod I LLC 2911 Turtle Creek Blvd Ste 900 Dallas TX 75219 Ion Field Services LLC 64 40Th Ave Sw Dickinson ND 58601 Irish Oil & Gas Inc PO Box 2356 Bismarck ND 58502 Iron Horse Inc PO Box 1408 213 3Rd St South New Town ND 58763 Iron Horse Royalties LLC 114 West 7Th St Ste 1220 Austin TX 78701 Iron Horse Tools LLC PO Box 7762 Corpus Christi TX 78467 Iron Mountain 1000 Campus Dr Collegeville PA 19426 Iron Mountain Data Centers, LLC (Successor To Mag Datacenters) Isn Software Corporation 3232 Mckinney Ave Suite 1500 Dallas TX 75204 Isramco Energy LLC 1001 W Loop S Ste 750 Houston TX 77027

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 19 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 23 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Isramco Energy LLC 1001 West Loop South Ste 750 Houston TX 77027 Issuetrak 6160 Kempsville Cir Suite 101B Norfolk VA 23502 Ivan Cayko Address On File

Ivante 698 West 10000 South Suite 500 South Jordan UT 84095 Iver A Lund And Minnie R Lund Address On File J & A Services LLC 3166 Pipe Court Grand Junction CO 81504 J & J Rental LLC PO Box 1150 New Town ND 58763 J & L Fencing & Pitliners Inc PO Box 165 Sidney MT 59270 J & M Trucking Inc 5780 W Yellowstone Casper WY 82604 J B Griffis Holdings LLC PO Box 2983 Midland TX 79702 J Cleo Thompson Address On File J Cleo Thompson Address On File J Custom Electric 11912 36Th St Nw Watford City ND 58854

J Hiram Moore Ltd Partnership Providence Energy Ltd Aif 16400 Dallas Parkway Ste 400 Dallas TX 75248 J Kamp Oil LLC PO Box 331 Beach ND 58621 J M Gahr Address On File J. P. Morgan Securities LLC Attn: Andrew Castaldo J.P. Morgan Attn: Andrew Castaldo J.P. Morgan Securities LLC 925 Westchester Ave Ste 405 West Harrison NY 10604 Jab Rentals Inc Dba Jab Services Po Box 14738 Odessa TX 79768 Jacam Chemicals 2013 LLC PO Box 96 205 S Broadway Sterling KS 67579 Jack Nadal Inc. 8701 Bellanca Ave. Los Angeles CA 90045 Jackie Lee Fiscus And Shirley Fiscus Address On File Jackson Walker 1401 Mckinney St. Suite 1900 Houston TX 77010 Jackson Walker LLP Attn: Kendra Gradney 100 Congress Avenue Suite 1100 Austin TX 78701 Jacob A Selinge r Address On File Jacob Johnson Address On File Jacob Wayne Johnson Address On File Jag Oil Limited Partnership PO Box 4190 Scottsdale AZ 85261 James & Loretta Tescher Address On File James & Sharon Moline Address On File James A Hayes Address On File James A Holland Address On File James A Norgard And Carol Norgard Address On File James A Scott Address On File James D & Jody Renbarger Jt Address On File James Earl Fowler Address On File James H Smart Jr Address On File James Service Inc Address On File James R Hurt Address On File James Sloan Everett, Sloans Trusts Partnership Address On File Jamex Marketing, LLC Attn: James Ballengee 5151 Beltline Rd Suite 715 Dallas TX 75254 Jamex Marketing, LLC c/o Forshey & Prostok, LLP Attn: Jeff P. Prostok 777 Main Street Suite 1290 Fort Worth TX 76102 Attn: Joel W. Reese, Pete Marketos, Leslie Jamex Marketing, LLC c/o Reese Marketos LLP Chaggaris, & Tyler J. Bexley 750 N Saint Paul St Suite 600 Dallas TX 75201-3201 Jamieson Natural Resource Fund 2865 Lilac Lane N Fargo ND 58102 Janet Elizabeth Urban Rev Address On File Janet L Skadeland Address On File Jann J & Margaret M Peterson Address On File Jannis L Greene Address On File Jason Raus Address On File Jasper County, Montgomery County, Harris County, Angelina County c/o Linebarger Goggan Blair & Sampson, LLP Attn: Tara L. Grundemeier PO Box 3064 Houston TX 77253-3064 Jay V Thomas Family Trust Address On File Jean King Haltom Address On File Jeannie And John Jay Kirby Iii Address On File Jeff Stromstad Address On File Jefferies LLC 520 Madison Avenue Attn: General Counsel New York NY 10022 Jeffrey C Hauge Address On File Jeffrey W Berger Address On File Jeffries LLC Attn: General Counsel 520 Madison Avenue New York NY 10022 Jeffries LLC Attn: Guy Oliphant Jennie Helle r Address On File Jennifer Parnell Barker Address On File Jerome Heggen Address On File Jerome O Manning Address On File Jessica Hansen Address On File

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 20 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 24 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Jessica Rowland Blake Heritage Address On File Jessie H Bean Jr Address On File Jessie Pauline Erickson Address On File Jet Specialty Inc PO Box 678286 Dallas TX 75267-8286 Jgl Solutions LLC 1411 Monticello Drive Prosper TX 75078 Jim Everett Address On File Jim Whitehead Oil & Gas LLC PO Box 80735 Phoenix AZ 85060 Jimmie Baggett Address On File Jj Oil LLC 1280 5Th St Sw Dickinson ND 58601 Jj Oil, LLC 1280 5Th St Sw Dickinson ND 58601 Jjp Land & Oil LLP PO Box 836 Cando ND 58324 Jmac Resources Inc 5009 139Th Ave Nw Williston ND 58801-8602 JMAC Resources Inc Attn: Darla Miller 121 48th Ave SW Williston ND 58801 JMAC Resources, Inc. Attn: Jon McCreary 1505 N. Miller St. Suite 260 Wenatchee WA 98801 Jnj Testing Services 966 3Rd Ave E Dickinson ND 58601 Jodee Beth Fandrich Foss Address On File Joe & Shannon Fritz Address On File Joe C Martino Address On File Joele Frank, Wilkinson Brimmer Katcher 622 Third Avenue New York NY 10017 John Bean By Bobbie Ruth Bean Thomas Address On File John C Dennison Address On File John C. Toedtli Address On File John Edward Lewis J r Address On File John H Holt Oil Properties Inc Address On File John Hovde Address On File John K Keyes Family Trust Address On File John M Jacobson Address On File John Rosa Address On File Jon & Jeannie Bayers 1998 Tr Address On File Jon Frank Clark Address On File Jon Harris Greene Address On File Jonathan Cunningham Address On File Jones Daube Mineral Company PO Box 1169 Duncan OK 73534-1169 Jonnie Layne Consulting PO Box 989 Watford City ND 58854 Jos Anchors Service Inc PO Box 594 Kermit TX 79745 Joseph F Crar y Address On File Joseph F Reculusa Address On File Joseph Homan Trust Address On File Joseph P Jackman Address On File Josh Cole Address On File Journeys End Inc 4800 Baseline Road E104 #274 Boulder CO 80305 Jp Morgan Chase Bank, N.A. Wss Global Fee Billing Po Box 26040 New York NY 10087-6040 Attn: Ryan Jpmorgan Chase Bank, N.A. 1125 17Th Street Floor 3 Fuessel Denver CO 80802 Jpmorgan Chase Bank, N.A. Attn: Ryan Fuessel 1125 17th Street Floor 3 Denver CO 80802 J-S Sanitation LLC PO Box 543 Beulah ND 58523 Jtt Oil LLC 2405 West 4 J Road Gillette WY 82718 Juanita I Evans Address On File Judith Ann Buxton Revocable Address On File Judy Strong Address On File Juneil K Gibson Address On File Justin Walters Dba Address On File Jw Powe r PO Box 205856 Dallas TX 75320-5856 J-W Power Compan y PO Box 205856 Dallas TX 75320-5856 J-W Power Compan y c/o Miller Mentzer Walker, P.C. Attn: Julie A. Walker 100 N. Main St. PO Box 130 Palmer TX 75152 J-W Power Company-463 PO Box 205856 Dallas TX 75320-5856 K & R Roustabout Inc PO Box 210 Killdeer ND 58640 K.E. Andrews And Company Attn: Kyle Fisher, 1900 Dalrock Rd. Rowlett TX 75088 Kacie Lee Engum Address On File Kadaca Oil & Gas Inc Attn: Linda Schifferns Po Box 1282 Glenrock WY 82637 Kadrmas Lee And Jackson Inc Address On File Kahuna Ventures LLC. 11400 Westmoor Cir Ste. 325 Westminster CO 80021 Kaiser Francis Dept 637 Tulsa OK 74182 Kaiser Francis Oil Co Dept 637 Tulsa OK 74182 Kaiser-Francis Dept 637 Tulsa OK 74182 Kaiser-Francis Oil Company Dept 637 Tulsa OK 74182 Kane Family Trust Dtd 06-05-69 Address On File Kansas Department of Health and Environment Curtis State Office Building 1000 SW Jackson St Topeka KS 66612 Kansas Office Of The Attorney General 120 Sw 10Th Ave 2Nd Fl Topeka KS 66612

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 21 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 25 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Kap Energy 816 4Th St Bismarck ND 58501 Kap Energy LLC 816 4Th St Bismarck ND 58501 Kappa North America, Inc. 11767 Katy Freeway Suite 500 Houston TX 77079 Karen Severtsen c/o Turman & Lang, Ltd. Attn: Katrina A. Truman Lang 505 N Broadway, Suite 207 PO Box 110 Fargo ND 58107-0110 Karleen K Bridges Address On File Kary Data, Inc. 1917 Market Street Ste. B Denver CO 80290 Katharyn Trotter Address On File Kathleen Ann Nye Daly Address On File Kathleen Ann Rowe Address On File Kathleen L Rucki Address On File Kathleen P Henderson Address On File Kay King Hall Address On File Kay Stepanek Address On File Kayte Isakson Address On File Kb Oil Tools LLC PO Box 240 Kersey CO 80644-0240 Kb Working Interests LLC P O Box 50470 Midland TX 79710 Kdm Petromanagement PO Box 1558 Naples FL 34106 Kdm Petromanagement LLC PO Box 1558 Naples FL 34106 Ke Andrews 1900 Dalrock Road Rowlett TX 75088 Keith Flygare Address On File Keith W & Thelma S Johnson Address On File Kelclay Inc 288 Clayton St Ste 206 Denver CO 80206 Kelclay, Inc 288 Clayton St Ste 206 Denver CO 80206 Kelly Energy, LLC 1144 W. Miracle Mile Tucson AZ 85705 Kelly Oil & Gas LLC 303 S Union St Traverse City MI 49684 Kennedy Minerals Ltd 500 W Texas Suite 655 Midland TX 79701 Kenneth & Rosalie Stevenson Address On File Kenneth J & Kathryn Knels Address On File Kenneth N And Milana L Berg Address On File Kenny Stedman Address On File Kent Lynch Address On File Kent M Lynch Address On File Kent S Taylo r Address On File Kerr Mcgee PO Box 730875 Dallas TX 75373-0875 Kerr Mcgee O & G Onshore LP PO Box 730875 Dallas TX 75373-0875 Kevin Aarestad Address On File Kevin George Turnbow Address On File Kevin Glen Rogers Address On File Kevin Turnbow Address On File Key Energy Services LLC PO Box 4649 Houston TX 77210 Key Energy Services LLC Attn: J. Marshall Dodson 1301 McKinney St Suite 1800 Houston TX 77010 Keystone O&G Tx LP, PO Box 916107 Fort Worth TX 76191-6107 Keystone Pump & Supply LLC PO Box 1176 Kermit TX 79745 Kgh Operating Company 2812 1St Ave North Ste 408 Billings MT 59101 Kim T Parson Address On File Kinder Morgan Treating LP C/O Jp Morgan Chase Bank Na Po Box 734031 Dallas TX 75373-4031 Kinder Morgan Treating LP c/o Law Office of Patricia Williams Prewitt Attn: Patricia Williams Prewitt 10953 Vista Lake Court Navasota TX 77868 Kinder Morgan Treating LP-6224 C/O Jp Morgan Chase Bank Na Po Box 734031 Dallas TX 75373-4031 King Completions LLC PO Box 9156 Houma LA 70361-9156 Kirk L Johnson Address On File Kirkland & Ellis 609 Main Street Houston TX 77002 Kkrep LLC PO Box 551 St John IN 46373 Kleinfelde r 1801 California St Suite 1100 Denver CO 80202 Kleinfelder, Inc. PO Box 51958 Los Angeles CA 90051-6258 Klx Energy Services LLC 28099 Network Place Chicago IL 60673-1280 Kml Inc 121 8Th Street West Williston ND 58801 Knapp Oil PO Box 786 Sidney MT 59270 Knapp Oil Corporation PO Box 786 Sidney MT 59270 Knighten Machine & Service Inc PO Box 12587 Odessa TX 79768 Koch Exploration PO Box 2219 Wichita KS 67201 Koch Industries Inc. Attn: J.C. Mcmahon 111 West Ocean Boulevard Suite 1125 Long Beach CA 90802 Kodiak Oil & Gas (Usa) Inc. Attn: Cathleen M. Osborn 1625 Broadway Suite 250 Denver CO 80202 Kootenai Resource Corp 300 Whitefish Hills Dr Whitefish MT 59937 Kpmg 1225 17Th Street, Ste 800 Denver CO 80202 Kpmg Dept 0754 Po Box 120754 Dallas TX 75312-0754 Kpmg LLP Dept 0754 Po Box 120754 Dallas TX 75312-0754 Kraken Oil & Gas Ii LLC 9805 Katy Freeway Ste 360 Houston TX 77024 Kraken Oil And Gas Ii LLC 9805 Katy Freeway Ste 360 Houston TX 77024 Kraken Oil And Gas Ii LLC Attn: Bruce Larsen 9805 Katy Freeway Suite 300 Houston TX 77024

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 22 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 26 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Kraken Oil And Gas Iii LLC Attn: Bruce Larsen 9805 Katy Freeway Suite 300 Houston TX 77024 Kraken Oil And Gas LLC Attn: Bruce Larsen 9805 Katy Freeway Suite 300 Houston TX 77024 Krh 3390 Whitefish Stage Kalispell MT 59901 Krh Inc PO Box 1616 Kalispell MT 59903 Kristen Lewis Leath Address On File Kristine D Grigsby & Address On File Kudzu Oil Properties LLC Attn: Wirt Yerger 300 Concourse Blvd Suite 101 Ridgeland MS 39157 Kuntz Sandblasting & Painting Address On File Kureha Energy Solutions LLC 3151 Briarpark Dr Ste 1050 Houston TX 77042 L & L Oilfield Servicesinc PO Box 246 Kaycee WY 82639 L J Schwartz Trust Address On File L T Capital LLC PO Box 80735 Phoenix AZ 85060 La Petroleum Inc PO Box 456 Howey In The Hills FL 34737 Lact Service Company-8592 3521 Industrial Dr Hobbs NM 88240 Lagniappe Petroleum LLC 503 Newberry Dr Allen TX 75013 Lake Como Properties 244 East Center Street Canton MS 39046 Lake Como Properties LLC 244 East Center Street Canton MS 39046 Lake Energy Development LLC PO Box 2353 Williston ND 58802-2353 Lake Investment & Prod Co Ltd PO Box 2134 Austin TX 78768-2134 Lake View Services LLC 5801 Lake Shore Est Lot 3D Beulah ND 58523 Lakeshore Talent 8400 East Prentice Ave, Suite 1401 Greenwood Village CO 80111 Lana Conklin and Crystal Henzi, as Trustees of the Ruth Parker Wood Revocable Trust dated July 27, 1994 c/o Hopkins & Carley Attn: Jay M. Ross & Monique D. Jewett-Brewster The Letitia Building 70 S First St San Jose CA 95113-2406 Landmark Graphics Corporation 3000 N Sam Houston Pkwy E Houston TX 77032 Landtech Enterprises, LLC-356 Nuverra Enviromental Solutions Po Box 912620 Denver CO 80291-2620 Lannie Fladeland Address On File Lao Energ y 8731 Aberdeen Circle Highlands Ranch CO 80130 Larco Resources PO Box 821 Bismarck ND 58502 Larco Resources LLC PO Box 821 Bismarck ND 58502 Larco Resources, LLC PO Box 821 Bismarck ND 58502 Lario O&G 301 S Market St Wichita KS 67202 Lario Oil & Gas Co 301 S Market St Wichita KS 67202 Larry L Brubaker Address On File Larry Leonard Fernandes Address On File Lashley Spraying LLC PO Box 186 Trenton NE 69044 Lassey Minerals LLC P O Box 27 Cartwright ND 58838 Laura Schulte Address On File Laurie Moorhead Address On File Lazard Freres & Co. LLC 30 Rockefeller Plaza New York NY 10112 Lazy Rockin R Ranch LLP, Lynn Russell, President 14783 44Th Lane Nw Williston ND 58801-9337 Lbj Inc 19255 E Escalante Rd Queen Creek AZ 85142 Ldis LLC 5620 Ward Rd Ste 200 Arvada CO 80002 Leaseaccelerator Services, LLC 10740 Parkridge Blvd Ste 701 Reston VA 20191 Leased Vehicle Fleet Agreement-8381 Lee & Virginia Berry Trust Address On File Lee Tjelde Address On File Legacy Tool & Rental LLC PO Box 989 Watford City ND 58854 Legado Investments LLC 6001 West Industial Ave Midland TX 79706 Legend Energy Services LLC 5801 N Broadway Extension Suite 210 Oklahoma City OK 73118 Leona Labonte Address On File Leroy 2000 LLC PO Box 192199 Dallas TX 75219 Leroy Edwin Jorgenson Address On File Leroy Eide Address On File Leroy Loome r Address On File Leslie R & Connie L Tofte Address On File Lester & Claudia Lueking J/T Address On File Let It Flow LP 1485 W State Route 89A #5 Sedona AZ 86336 Lewan Technology 1400 S. Colorado Blvd. Denver CO 80222 Lewan Technology (Dba Xerox) PO Box 207839 Dallas TX 75320 Lewis, Bess, Williams & Weese Pc 1801 California Street Suite 3400 Denver CO 80202 Lg Oil & Gas LLC Cheryl A Moore Po Box 546 Bismarck ND 58502-0546 Lgos LLC PO Box 462 Denver City TX 79323 Liberty Lift Solutions LLC 1250 Wood Branch Park Dr Ste 250 Houston TX 77079 Liberty Pipeline Liberty Pipeline Counterparties (Part Of Liberty Agreement Package) Liberty Pipeline Counterparties (Part Of Liberty Agreement Package) Liberty Pipeline LLC 2331 City West Blvd. Houston TX 77042

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 23 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 27 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Liberty Pipeline, Bridger Pipeline, Belle Fourche Pipeline, Butte Pipeline, Red Oak Pipeline (Collectively "Liberty Pipeline Counterparties") (Part Of Liberty Agreement Package) Liberty Production, LLC 1550 Larimer Street Suite 508 Denver CO 80202 Liberty Resources LLC 1200 17Th Street Ste 2200 Denver CO 80202-5854 Liberty Resources LLC, Attn Robert Schulz 1200 17Th St Ste 2050 Denver CO 80202 Liepke Drilling & Completions Levi Liepke 5555 71St Ave Ne Bismarck ND 58503 Light Tower Rentals Ltd 3300 North A Street Building 4 Ste 100 Midland TX 79705 Light Tower Rentals Ltd-695 3300 North A Street Building 4 Ste 100 Midland TX 79705 Lignite Oil Company Inc 8487 101St Nw Lignite ND 58752 Lime Rock 1111 Bagby St Ste 4600 Houston TX 77002 Lime Rock Iii 1111 Bagby St Ste 4600 Houston TX 77002 Lime Rock Iv PO Box 4346 Dept 731 Houston TX 77210-4346 Lime Rock Resources Iii-A LP 1111 Bagby St Ste 4600 Houston TX 77002 Lime Rock Resources Iv-A LP PO Box 4346 Dept 731 Houston TX 77210-4346 Linda Sue Shawcross Address On File Linde Energy Services Inc 3023 Western Bluffs Blvd Billings MT 59106 Linkedin 1000 West Maude Avenue Sunnyvale CA 94085 Linkedin 1001 West Maude Avenue Sunnyvale CA 94085 Linkedin Corporation 1000 W Maude Ave Sunnyvale CA 94085 Linkedin Corporation 62228 Collections Center Dr Chicago IL 60693-0622 Linksland Operating, LLC 1202 Richardson Dr. #115 Richardson TX 75080 Linn Energ y 600 Travis Suite 5100 Houston TX 77002 Lion Oil Trading And Transportation 100 E Peach St Suite 201 El Dorado AR 71730 Lisa B Moore Decarlo Address On File Lisle Gravity Inc. 621 Seventeenth St. Suite 2600 Denver CO 80293 Little Missouri Resources LLC 103 5Th St Se Dickinson ND 58601 Llewellyn Holland Address On File Lloyd'S Register 71 Fenchurch Street London EC3M 4BS Lmbi O&G Tx LP, Srbi O&G Tx LP, Thru Line O&G Tx LP PO Box 916107 Fort Worth TX 76191-6107 Lmc Energy LLC 550 W Texas Ave #945 Midland TX 79701 Lmk Resources Inc. 6051 North Course Drive Suite 300 Houston TX 77072 Lmwb Investments LLC 5380 Old Bullard Rd Ste 600-366 Tyler TX 75703 Lobo Services PO Box 1931 Midland TX 79702 Lochend Energy Services Inc Box 280 Crossfield AB T0M 0S0 Canada Locken Oilfield Service 4699 Hwy 8 New Town ND 58763 Loenbro Instrumentation & Electrical Llc 1900 32Nd Ave Ne Black Eagle MT 59414 Logan Resources LLC 4516 Lovers Lane Suite #145 Dallas TX 75225 Lo-Gear LLC PO Box 246 Kaycee WY 82639 Logmein Usa, Inc. 320 Summer Street Boston MA 02210 Lone Star Instrumentation & Electric Corp 2222 West 42Nd St Odessa TX 79764 Lone Tree Services, LLC PO Box 1716 Greeley CO 80632 Longnecker & Associates 600 S Cherry St Ste 1115 Glendale CO 80246 Lonquist Family Trust PO Box 341236 Austin TX 78734 Loren G Iverson Estate Address On File Loren Young Address On File Lorenzo Bean Address On File Loti LLC 3717 Wilderness Cove Bismarck ND 58503 Louise Bean Fudge Address On File Louisiana Department of Environmental Quality 602 North Fifth Street Baton Rouge LA 70802 Louisiana Office Of The Attorney General 1885 N. Third St Baton Rouge LA 70802 Loumarv LLC 2727 Kirby Dr #19F Houston TX 77098 Lowell C & Arlana D Mosby Jt Address On File LPG Capital Partners, LP c/o Letendre Group Attn: Benoit M. Letendre 123 Second Street PO Box 92 Baraboo WI 53913 Ls Hydrocarbyl LLC PO Box 601 Bismarck ND 58502 Lsm Energ y PO Box 523 Mandan ND 58554 Lsm Energy Inc PO Box 523 Mandan ND 58554 Lsm Energy, Inc PO Box 523 Mandan ND 58554 Ltr Insulation Service LLC 4817 S Fultondale Way Aurora CO 80016 Luann Rima Address On File Lubrizol Specialty Products 23174 Network Pl Chicago IL 60673-1231 Lubrizol Specialty Products Inc (Lspi)-5095 2000 West Sam Houston Pkwy S, Ste 320 Houston TX 77042 Luella A Carscallen Life Estate Address On File Lufkin Industries, LLC (Part Of Baker Hughes, A Ge Company) 811 Willow Oak Drive Missouri City TX 77489-2468 Lukenbill Family Partnership 13876 57Th Street Nw Williston ND 58801 Lund Oil Inc 3605 Fourth Avenue Ne Watford City ND 58854-7001 Lura Dell Bean Address On File Lyle G Heller Address On File

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 24 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 28 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Lynda H Coulter Address On File Lynx Oil Company 9736 W Swarthmore Drive Littleton CO 80123 M & C Energy LLC 6024 Tranquil Circle Bismarck ND 58503 M & C Energy, LLC PO Box 1448 Sidney MT 59270 M & E Trucking LLC 2121 1St Ave Greeley CO 80631 M & J Service Inc PO Box 108 Sidney MT 59270 M & M Energy Inc PO Box 1448 Sidney MT 59270 M & M Geodigital Services Inc 8272 Dudley Way Arvada CO 80005 M & W Mineral Brokers LLC 4965 2Nd St Sw Dickinson ND 58601 M Code LLC 5744 E Joshua Tree Lane Paradise Valley AZ 85253 M Dennis Brush Address On File M E Greer Address On File M I Ashby Address On File M I Ashby M E Greer Address On File M&C Energy LLC 721 Boren Blvd Semiinole OK 74868 M&C Energy, LLC 6024 Tranquil Circle Bismarck ND 58503 M&G Rental Tools Company PO Box 1183 Kermit TX 79745 M&H Enterprises Inc 19450 Hwy 249 Suite 600 Houston TX 77070 M&M Energy, Inc. PO Box 1448 Sidney MT 59270 Macfee O&G 3659 Blue Lake Dr Spring TX 77388 Macfee Oil & Gas 3659 Blue Lake Dr Spring TX 77388 Macfee Oil And Gas LLC P O Box 597 Bismarck ND 58502 Magic Dog Oil & Gas Ltd PO Box 10708 Midland TX 79702 Magic Merlin Energy Investment PO Box 2309 Bend OR 97709 Magic Merlin Energy Investments, LLC PO Box 2309 Bend OR 97709 Magna Iv Engineering Inc 96 Inverness Dr East, Unit R Englewood CO 80201 Magnetic Variation Services LLC Dept. # 41950 Po Box 650823 Dallas TX 75265-0823 Magnum Oil Tools Intl Ltd PO Box 734582 Dallas TX 75373-4582 Maguire Oil Company 5950 Berkshire Lane Ste 1500 Dallas TX 75225-5846 Mainstream Investors LLC 2501 6Th St Ste B Minot ND 58701 Maison Blanche (Mb) Seismic LLC 11011 Richmond Avenue Suite 225 Houston TX 77042 Map r Pmb 373 231 Market Pl San Ramon CA 94583-4743 Susan Lewis, Poa Po Box 732312 Dallas TX 75373 Marathon Oil Company Susan Lewis, Poa Po Box 732312 Dallas TX 75373 Marathon Oil Company c/o Ellis Eppich Schafer Jones LLP Attn: Clay M. Taylor & Bryan C. Assink 420 Throckmorton Street Suite 1000 Fort Worth TX 76102 Marcin Production LLC PO Box 597 Bismarck ND 58502 Marcin Production, LLC PO Box 597 Bismarck ND 58502 Marco Technologies LLC PO Box 790448 St Louis MO 63179 Marco Technologies LLC PO Box 790448 St Louis MO 63179-0448 Maria Axtman Address On File Marian Aho Address On File Marie B Nugent, Colleen Holly P Callia Aif Address On File Mark And Benna Muth Address On File Mark Eslasse r Address On File Mark G Ellis Address On File Mark J Hauge Address On File Mark L Shidler Inc 1313 Campbell Road Bldg D Houston TX 77055 Mark Mccalliste r Address On File Mark R Haesly Address On File Markit Group Limited 15 Inverness Way East Englewood CO 80122 Marlene Larson Address On File Marquis Metal Works Address On File Marrs Dakota Energy, LLP 3573 E Sunrise Dr. #233 Tucson AZ 85718 Marsha B White Address On File Marshall & Winston Inc PO Box 50880 Midland TX 79710-0880 Marshall & Winston, Inc P O Box 50880 Midland TX 797100-0880 Marshall Craft Address On File Marshall Craft Oil PO Box 13195 Grand Forks ND 58208 Marshall Craft Oil LLC PO Box 13195 Grand Forks ND 58208 Marshall Exploration & Land Llc 2562 Morningside Rd Long Lake MN 55356 Martha Smart Bennett Address On File Martin And Sylvia Reige r Address On File Martin J Skrovina Address On File Marvin J Masset Address On File Mary & Thomas P Mcdonnell PO Box 2390 Port Aransas TX 78373 Mary A Barnett Address On File Mary Arlene Esse r Address On File Mary Baker Address On File

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 25 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 29 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Mary Elizabeth Mccrory Address On File Mary M Forster Dba Address On File Masco Wireline Service Inc PO Box 2726 Laurel MS 39442 Matrix Shawnee Holdings LLC 5725 Commonwealth Blvd Sugar Land TX 77479 Matthew Paris Address On File Matthew S Marshall Address On File Maurice M Nickerson And Merlee S Address On File Maxflow Chemicals Of Texas, LLC PO Box 688 Carthage TX 75633 Maxine H Felde r Address On File Maxine King Family Trust Address On File Maxus Eergy 717 N Harwood St. #3067 Dallas TX 75201 Mb Investments LLP PO Box 856 Watford City ND 58854-0856 Mb Seismic LP Mbi Energy Rentals Inc PO Box 912524 Denver CO 80291-2524 Mbi Energy Services PO Box 912524 Denver CO 80291-2524 Mbi Oil & Gas LLC Attn: Gary Hokkanen 1298 - 35Th Street Sw Belfield ND 58622 Mccody Concrete Products Inc PO Box 4005 Williston ND 58802-4005 Mcconnell & Scully Inc 146 West Main Street Homer MI 49245 Mccullis Oil And Gas Inc PO Box 221515 Denver CO 80222 Mcculliss Resources Co Inc 1225 17Th Street Ste 2210 Denver CO 80202 Mcdaniel Technical Services Inc Po Box 2557 Broken Arrow OK 74013-2557 Mckenzie Count y Emergency Management 201 5Th Street Nw Watford City ND 58854 Mckenzie County Tower-8443 Emergency Management 201 5Th Street Nw Watford City ND 58854 Citizens Bank Center, 919 North McKenzie Electric Cooperative, Inc. c/o Fox Rothschild LLP Attn: Carl D. Neff & Kasey H. DeSantis Market Street Suite 300 Wilmington DE 19801 Two Lincoln Centre, 5420 McKenzie Electric Cooperative, Inc. c/o Fox Rothschild LLP Attn: David Grant Cooks Lyndon B. Johnson Fwy Suite 1200 Dallas TX 75240-6215 Mckenzie Energy Partners C/O Gravity Oilfield Services Po Box 734128 Dallas TX 75373-4128 Mckenzie Energy Partners LLC C/O Gravity Oilfield Services Po Box 734128 Dallas TX 75373-4128 McKenzie Energy Partners LLC Attn: Thomas McKenzie PO Box 1037 Watford City ND 58854 Mckenzie Energy Partners LLC-6783 C/O Gravity Oilfield Services Po Box 734128 Dallas TX 75373-4128 McKenzie Energy Partners, Globe Energy Services, Inc., and Globe Chemical LLC dba Tech Management c/o Doré Rothberg McKay, P.C. Attn: Maria Bartlett & Zachary S. McKay 17171 Park Row Suite 160 Houston TX 77084 Mcmahan Services Ltd 269 Us Hwy 183 South Cuero TX 77954 Mcmahon Energy Partners LP 4545 S Monaco St #144 Denver CO 80237 Mcneil Development LLP 5014 Riverfront Place Mandan ND 58554 Mcp Orion LLC 5555 Dtc Parkway Ste 310 Greenwood Village CO 80111 Mcpherson Consulting LLC 10159 Highway 16 Savage MT 59262 Mct Energy Ltd 550 West Texas Avenue, Ste 945 Midland TX 79701 Mees Implement Address On File Megadyne Services Co Inc Po Drawer G Kermit TX 79745 Meidinger Consulting LLC 966 Cherry Ave Dickinson ND 58601 Melanie Clifford Nedrud Address On File Melody Mcgann Address On File Mercuria Bakken, LLC Attn: Jarek Kozlowski 311 South Wacker Drive Suite 1700 Chicago IL 60606 Mercuria Energy Trading 20 Greenway Plaza Suite 650 Houston TX 77046 Mercuria Energy Trading, Inc. 20 Greenway Plaza Suite 650 Houston TX 77046 Mercury Holdings LLC PO Box 27227 Houston TX 77227 Meredith Hendrickson Address On File Meridian 102 LP 16400 North Dallas Pkwy Ste 400 Dallas TX 75248 Merit Energy Compan y 13727 Noel Rd Suite 1200 Dallas TX 75240 Meritain Health Po Box 853921 Richardson TX 75085-3921 Meritain Health PO Box 27847 Minneapolis MN 55427 Meritain Health PO Box 853921 Richardson TX 75085-3921 Merrill Commnications LLC 1 Merrill Circle Saint Paul MN 55108 Merrill Corporation 733 Marquette Avenue Minneapolis MN 55402 Merrill Lynch Commodities, Inc. 20 East Greenway Plaza 7Th Floor Attn: Legal Houston TX 77046 Mesquite Oil Tools Inc PO Box 668 Snyder TX 79549 Metasource

(Previously - Dataimage Inc #73713) 1900 Frost Road Ste 100 Bristol PA 19007 Metasource, LLC 1900 Frost Road Suite 100 Bristol PA 19007 Metasource, LLC 67 West 13490 South, Suite 300 Draper UT 84020 Mewbourne Oil Company PO Box 7698 Tyler TX 75711 Mhm Resources LP PO Box 202656 Dallas TX 75320-2656 Michael & Vicki Burnham Address On File Michael A Sevigny Or Mavis Address On File Michael Harrison Moore Address On File Michael Harrison Moore 2006 Trust Address On File

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 26 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 30 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Michael S Johnson Management Company One Llc Po Box 2904 Denver CO 80201 Michael S Johnson Mgmt PO Box 2904 Denver CO 80201 Michael Scott Trucking Inc PO Box 22020 Cheyenne WY 82003 Michele Bean Shelvin Address On File Michigan Department of Environment, Great Lakes, and Energy Constitution Hall 525 West Allegan PO Box 30473 Lansing MI 48909 Michigan Department Of The Attorney General G. Mennen Williams Building 525 W Ottawa St 7th Floor Lansing MI 48933 Micro Motion Inc 22737 Network Place Chicago IL 60673-1227 Microsoft Corporation C/O Legal And Corporate Affairs One Microsoft Way Redmond WA 98052 Mid-Rivers Communications PO Box 280 904 C Avenue Circle MT 59215 Mike & Joyce Glaspey Address On File Mike Everett Address On File Mike Golden Estate Address On File Mike Otoole Address On File Mike Walters Specialty Services Llc Po Box 6531 Laurel MS 39441 Milburn Investments LLC PO Box 141 Midland TX 79702-0141 Milestone Companies LLC 4626 County Road 65 Keenesburg CO 80643 Miller Insulation Co Inc 3520 E Century Ave P O Box 1393 Bismarck ND 58502-1393 Miller Oil Co Box 408 Culbertson MT 59218 Mimecast 1 Finsbury Avenue London EC2M 2PF United Kingdom Mineral Services LLC PO Box 5440 Grand Forks ND 58206 Mirada 5555 Dtc Parkway Ste 310 Greenwood Village CO 80111 Mirada Energy LLC 5555 Dtc Parkway Ste 310 Greenwood Village CO 80111 Mirada Energy, LLC 5555 Dtc Parkway Suite 310 Greenwood Village CO 80111 Miriam Thompson Address On File Mississippi Department of Environmental Quality PO Box 2261 Jackson MS 39225 Mississippi Office Of The Attorney General Walter Sillers Building 550 High St Suite 1200 Jackson MS 39201 Missouri Basin Well Serv Inc PO Box 458 Belfield ND 58622 Missouri Basin Well Service Inc (Mbi Energy Services)-8451 12980 35Th St Sw Belfield ND 58622 Missouri River Royalty 919 S 7Th St Ste 405 Bismarck ND 58504 Missouri River Royalty Corp 919 S 7Th St Ste 405 Bismarck ND 58504 Missouri River Royalty Corporation 919 S 7Th St Ste 405 Bismarck ND 58504 Missouri Valley Petroleum Inc PO Box 1117 Mandan ND 58554 Mitchell, Williams, Selig, Gates & Woodyard, P.L.L.C. 5414 Pinnacle Point Drive Suite 500 Rogers AR 72758-8131 Mitchell'S Oil Field Service Inc, A Wood Group Company-308 12116 Hwy 16 Sidney MT 59270 Mitchell'S Oilfield Services, Inc. Attn: John Allen 17325 Park Row Houston TX 77084 Mitchoil LLC 17878 West 77Th St North Haskell OK 74436 M-K Hydrovac Inc 808 County Road 215 Parachute CO 91635 Mlg Partners Ltd Mary Leslie Wells Gen Partner 4212 Lomo Alto #202 Dallas TX 75219-1564 Mmi Excavation LLC 9993 Desert Road Bismarck ND 58504 Mmsg Limited Partnership PO Box 12308 Dallas TX 75225 Mobil Exploration & Producing Us, Inc. 3000 Pegasus Park Drive Dallas TX 75247 Mobile Solutions Services Holdings, LLC 10731 East Easter Avenue Suite #105 Centennial CO 80112 Mobileiron 490 East Middlefield Road Mountain View CA 94043 Moelis Two Allen Center 1200 Smith Street Suite 1900 Houston TX 77002 Moncla Workover & Drilling Operations Llc Drawer #2351 Po Box 5935 Troy MI 48007-5935 Mondak Portables LLC PO Box 397 Williston ND 58802-0397 Monkota Petroleum Corp PO Box 77 Sidney MT 59270 Montana Department of Environmental Quality PO Box 200901 Helena MT 59620-0901 Montana Department of Revenue Attn: Teresa G. Whitney Legal Services Office 125 North Roberts Street PO Box 7701 Helena MT 59604-7701 Montana Department of Revenue c/o Husch Blackwell LLP Attn: Lynn H. Butler 111 Congress Avenue Suite 1400 Austin TX 78701 Montana Office Of The Attorney Genereal 215 N. Sanders Justice Building 3rd Floor Helena MT 59601 Montana Tech Of The University Of Montana-8683 1300 W Park St Butte MT 59701 Moon Lake Electric Association Inc-8452 800 W Highway 40 Roosevelt UT 84066-0337 Moore Resources LLC 1196 Alder Ave Dickinson ND 58601 Morgan County 734 Barlow Rd Ft Morgan CO 80701 Morgan County Rural Electric Association 734 Barlow Rd Ft Morgan CO 80701 Morgan County Rural Electric-5440 734 Barlow Rd Ft Morgan CO 80701 Attn: Close-Out Morgan Stanley Capital Group Inc. C/O Morgan Stanley & Co. Incorporated 1585 Broadway Notices New York NY 10036-8293 Mork Family Farm Trust Address On File Mountain States Imaging (Msi) 7050 South Yosemite Street Centennial CO 80112 Mountain States Imaging, LLC 7050 S. Yosemite Street Centennial CO 80112 Mountrail County 8103 61St Street Nw Stanley ND 58784 Mountrail-Williams Electric Cooperative c/o Vogel Law Firm Attn: Jon R. Brakke 218 NP Avenue PO Box 1389 Fargo ND 58107-1389 Mplx Originally Great Northern Gathering And Marketing LLC P.O. Drawer 2360 455 North Poplar Casper WY 82602 Mr Oil & Gas LLC 6500 Greenville Ave Ste 110 Dallas TX 75206 Mrc Global PO Box 204392 Dallas TX 75320-4392 Mrr Enterprises LLC PO Box 10772 Williston ND 58803 Mrrc

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 27 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 31 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Multi-Chem Group LLC PO Box 301341 Dallas TX 75303-1341 Murex 363 N Sam Houston Pkwy E Houston TX 77060 Murex Petroleum Corp 515 N Sam Houston Pkwy E. Suite 485 Houston TX 77060 Murex Petroleum Corporation 363 N Sam Houston Pkwy E Houston TX 77060 Mwiley Resources Inc PO Box 2151 Bismarck ND 58502-2151 Mylo Wolding And Kris Wolding Address On File Myrna Jean Stai r Address On File Myron & Darlene Wold Address On File Nadel And Gussman Bakken LLC 15 E 5Th St Suite 3300 Tulsa OK 74103 Nalco Champion PO Box 730005 Dallas TX 75373-0005 Nance Resources Inc F/K/A Ronan Inc 2924 Millennium Circle Billings MT 59102 Nancy O'Donnell Address On File Nancy Reese Bush Address On File Nancy Strom Address On File Nate Kaufman Address On File National Fuel LLC PO Box 4892 Parker CO 80134 National Oilwell Varco LP PO Box 201224 Dallas TX 75320-1224 National Oilwell Varco LP Attn: Jose Bayardo 7909 Parkwood Circle Drive Houston TX 77036 National Oilwell Varco LP (Elite Power LLC)-5841 PO Box 201224 Dallas TX 75320-1224 Native Energy Solutions LLC 4801 Lang Ave Ne Ste 210 Albuquerque NM 87109 Services Group PO Box 733491 Dallas TX 75373 Natural Gas Services Group Inc-7018 PO Box 733491 Dallas TX 75373 Nbl Permian LLC PO Box 733695 Dallas TX 75373-3695 Nd Energy Services 103 5Th St Se Dickinson ND 58601 Nd Oil LLC 16420 53Rd Street Sw Golva ND 58632 Ne2 Canada Inc. Suite 501 322 - 11Th Ave Sw Calgary AB T2R 0C5 Canada Neal & Bonnie Messer Address On File Nearburg Exploration Co LLC PO Box 823085 Dallas TX 75382-3085 Nebraska Department of Environment and Energy 1200 N Street Suite 400 PO Box 98922 Lincoln NE 68509-8922 Nebraska Office Of The Attorney General 2115 State Capitol Lincoln NE 68509 Neil Berger And Avis Berger Address On File Neil Gillund Address On File Nelson Pankowski Trust Address On File Nelson Ranches Inc 58900 Weld County Road 382 Grover CO 80729-9415 Nemont PO Box 600 Scobey MT 59263-0600 Neoinsulation LLC 202 N 6Th St Ste 4 Kingfisher OK 73750 Neset Consulting Service Inc 6844 Highway 40 Tioga ND 58852 Net Jets PO Box 933300 Atlanta GA 31193-3300 Netjets 4111 Bridgeway Avenue Columbus OH 43219 4111 C/O Owner Contract Bridgeway Netjets Attn: Netjets Legal Department Administration Avenue Columbus OH 43219 Netsource 3265 31St St Long Island City NY 11106 Netwrix Corporation 300 Spectrum Center Drive Suite 200 Irvine CA 92618 Neuralog 4800 Sugar Grove Blvd Ste 200 Houston TX 77477 New Mexico Environment Department PO Box 5469 Santa Fe NM 87502-5469 New Mexico Office Of The Attorney General 408 Galisteo Street Villagra Building Santa Fe NM 87501 Newfield Production Company (Deleted) 4 Waterway Square Ste 100 The Woodlands TX 77380 Newfield Rmi LLC C/O Newfield Prod Co P.O. Box 204370 Dallas TX 75320-4370 Newkota Services & Rentals 925 72Nd Ave Ne Minot ND 58703 Newport Minerals LLC 790 Hacienda Rd Evergreen CO 80439 Newsco International Energy Services Usa Inc 3101 Wood Court Casper WY 82601 NexTier Completion Solutions, Inc. Attn: Robert Drummond 3990 Rogerdale Houston TX 77042 Ngl Supply Co. Ltd. C/O Tx9217U Po Box 66900 Chicago IL 60666-0900 Ngl Water Solutions Dj LLC-5562 Attn: Treasury 3773 Cherry Creek N Dr Ste 1000 Denver CO 80209 Nicholas Carr Lambert Address On File Nisku Royalty LP PO Box 2293 Billings MT 59103-2293 Nixon Shefrin Hensen Ogburn, P.C. 5619 Dtc Parkway, Suite 1200 Greenwood Village CO 80111 Noble Casing Inc 1708 47Th St W Williston ND 58801 Noble Energy Inc P O Box 910083 Dallas TX 75391-0083 Noble Energy Wyco LLC P O Box 910083 Dallas TX 75391-0083 Noble Energy, Inc. 1001 Noble Energy Way Houston TX 77070 Noma F Olmsted Address On File Norman Cities Swd PO Box 10 Lamesa TX 79331-0010 Norman E Sondrol And Marlene J Sondrol Address On File Norra Resources LLC PO Box 816 Bismarck ND 58502 North Arm Resource Inc 207 E Georgia Avenue Phoeniz AZ 85012 North Arm Resource, Inc 207 E Georgia Avenue Phoeniz AZ 85012 North Arm Resources, Inc 207 E Georgia Avenue Phoeniz AZ 85012

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 28 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 32 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country North Country Oil 7258 38Th St Nw Parshall ND 58770 North Dakota Board Of PO Box 5523 Bismarck ND 58506-5523 North Dakota Department of Environmental Quality Attn: L. Dave Glatt, P.E. 918 E Divide Ave 4th Floor Bismarck ND 58501 North Dakota Department Of Transportation 608 East Boulevard Avenue Bismarck ND 58505-0700 North Dakota Dept Of Transportation Address On File North Dakota Of Transportation 608 East Boulevard Avenue Bismarck ND 58505-0700 North Dakota Office Of The Attorney Genereal State Capitol 600 E Boulevard Ave Deptartment 125 Bismarck ND 58505 North Dakota State PO Box 5523 Bismarck ND 58506-5523 North Plains Consulting Services Inc 1442 125Th Ave Nw Watford City ND 58854 North Plains Energy, LLC Attn: J. Stephen Mercer 1888 Sherman Street Suite 375 Denver CO 80203 North Plains Energy, LLC (As Seller) Attn: J. Stephen Mercer 1888 Sherman Street Suite 375 Denver CO 80203 North Waterfront-Texas, LLC 400 W Illinois Ave Ste 1630 Midland TX 79701 Northern Eneg y PO Box 2283 Bismarck ND 58502 Northern Energy PO Box 2283 Bismarck ND 58502 Northern Energy Corp PO Box 2283 Bismarck ND 58502 Northern Energy Corp. PO Box 2283 Bismarck ND 58502 Northern Energy Corporation PO Box 2283 Bismarck ND 58502 Northern Improvement Company PO Box 2846 Fargo ND 58108-2846 Northern O&G 601 Carlson Pkwy Ste 990 Minnetonka MN 55305 Northern Oil & Gas Inc 601 Carlson Pkwy Ste 990 Minnetonka MN 55305 Northern Oil & Gas Inc And Metals & Energy Capital Div 601 Carlson Pkwy Ste 990 Minnetonka MN 55305 Northern Oil & Gas Inc. 601 Carlson Pkwy Ste 990 Minnetonka MN 55305 Northern Oilfield Services LLC 1648 S Cushman St Ste 205 Fairbanks AK 99701 Northern Oilfield Services, LLC Attn: Sheldon Van Vost 1637 44th St W Williston ND 58801 Northern Oilfield Services, LLC c/o Church, Harris, Johnson & Williams Attn: Steven M. Johnson & Grant Kelly 114 Third Street South PO Box 1645 Great Falls MN 59403-1645 Northern Pump & Compress Inc PO Box 1497 Watford City ND 58854 Northern States Completions PO Box 733613 Dallas TX 75373-3613 Northern States Fishing Tool Co Inc Box 346 Watford City ND 58854 Northern Valley Electrical Service Inc 4551 S Washington St Ste L Grand Forks ND 58201 Northland Royalty Corp PO Box 1676 Bismarck ND 58502 Northstar Prod & Land LLC PO Box 2454 Midland TX 79702 Northwest Communications Coop PO Box 38 Ray ND 58849 Northwest Water Transfer LLC PO Box 8479 Williston ND 58803 Nova Energy LLC 3639 76Th Ave Nw Parshall ND 58770 Nova Energy, LLC 14195 Us Hwy 2 Williston ND 58801 Nova Oilfield Services Inc PO Box 2326 Williston ND 58802 Novaspect Inc P O Box 7621 Carol Stream IL 60197-7621 Np Resources LLC 1600 Broadway Ste 2450 Denver CO 80202 Np Resources LLC 1600 Broadway, Suite 2450 Denver CO 80202 Np Resources, LLC 1600 Broadway Ste 2450 Denver CO 80202 Nr Construction PO Box 744 New Town ND 58763-0744 Nutanix Inc 1740 Technology Dr Suite 150 San Jose CA 95110 O Brannan Energy Corp PO Box 7217 Bismarck ND 58507-7217 O Bryant & Heloise Lewis Address On File O Bryant Lewis And Heloise Carter Lewis Address On File O2 Group 150 Capital Drive Suite 100 Golden CO 80401 Oasis Emission Consultants Inc 2730 Commercial Way Rock Springs WY 82901 Oasis Petroleum North America LLC P O Box 731506 Dallas TX 75373-1506 Oasis Petroleum North American LLC Attn: Nickolas J. Lorentzatos 1001 Fannin Street Suite 1500 Houston TX 77002 Obrien Resources PO Box 2631 Bismarck ND 58502 Obrien Resources LLC PO Box 2631 Bismarck ND 58502 Occidental Energy Marketing, Inc. S. Greenway Plaze Houston TX 77227-7570 Odessa Pumps & Equipment Inc PO Box 60429 Midland TX 79711-0429 Office Of Natural Resources Revenue PO Box 25627 Denver CO 80225-0627 Office Of The State Engineer 900 East Boulevard Bismarck ND 58505-0850 Office of the U.S. Trustee Attn: Stephen Douglas Statham 515 Rusk Street Suite 3516 Houston TX 77056 Official Committee of Unsecured Creditors c/o Gray Reed & McGraw LLP Attn: Jason S. Brookner & Paul D. Moak 1300 Post Oak Blvd Suite 2000 Houston TX 77056 Official Committee of Unsecured Creditors c/o Gray Reed & McGraw LLP Attn: Lydia R. Webb 1601 Elm Street Suite 4600 Dallas TX 75201 Official Committee of Unsecured Creditors c/o Pachulski Stang Ziehl & Jones LLP Attn: Jeffrey N. Pomerantz & Shirley S. Cho 10100 Santa Monica Blvd 13th Floor Los Angeles CA 90067 Official Committee of Unsecured Creditors c/o Pachulski Stang Ziehl & Jones LLP Attn: Robert J. Feinstein & Steven W. Golden 780 Third Avenue 34th Floor New York NY 10017 Ogr Bakken Resources LLC Attn: Sarfraz Lalani 85 Broad St, 3Rd Fl New York NY 10004 Ogr Bakken Resources, LLC Attn: Sarfraz Lalani 85 Broad St, 3Rd Fl New York NY 10004 Oil India Usa Inc 101 Southwestern Blvd Ste 136 Sugarland TX 77478 Clean Up Inc PO Box 856 Monahans TX 79756 Oil States Energy Services LLC PO Box 203567 Dallas TX 75320-3567 Oilfield Labs Of America, LLC Dept 351 Po Box 4458 Houston TX 77210-4458 Oklahoma Department of Environmental Quality PO Box 1677 Oklahoma City OK 73101-1677 Oklahoma Office Of The Attorney General 313 Ne 21St St Oklahoma City OK 73105 Okreek Oil And Gas LLC 475 17Th St Ste 1350 Denver CO 80202

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 29 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 33 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Okreek Oil And Gas, LLC 475 - 17Th Street Suite 1350 Denver CO 80202 Old Crow Investments LLC 13809 Lake Magdalene Blvd Tampa FL 33618 Ole Borseth Family Trust Address On File Ole Johnson Address On File Olen Bean J r Address On File Olson Roustabout Inc 12250 Western St Sidney MT 59270 Oneneck It Solutions LLC 525 Junction Road Madison WI 53717 Oneok 1000 W. 5Th St., 17Th Floor Tulsa OK 74103-4298 Oneok Rockies Midstream LLC 5718 Westheimer Suite 1900 Houston TX 77055 Oneok Rockies Midstream, L.L.C. 370 Van Gordon Street Lakewood CO 80228 Oneok Rockies Midstream, LLC 5718 Westheimer Suite 1900 Houston TX 77055 Oneok Rockies Midstream, LLC Previously Bear Paw Energy, LLC 370 Van Gordon Street Lakewood CO 80228 Oneok Rockies Midstream, LLC Previously Bear Paw Energy, LLC 5718 Westheimer Suite 1900 Houston TX 77055 Onsolve 780 W. Granada Blvd. Ormond Beach FL 32174 Onsolve 780 West Granada Blvd Ormond Beach FL 32174 Onsolve LLC 780 West Granada Blvd Ormond Beach FL 32174 Onsolve, LLC 780 W. Granada Boulevard Ormond Beach FL 32174 Opsal Energy Inc 1633 Main St Ste A385 Billings MT 59105 Opteamix 9200 E Mineral Ave Ste 330 Centennial CO 80112 Oracle America Inc PO Box 203448 Dallas TX 75320-3448 Oracle America, Inc. 500 Oracle Parkway Redwood Shores CA 94065 Oracle America, Inc. c/o Buchalter, a Professional Corporation Attn: Shawn M. Christianson 55 Second Street 17th Floor San Francisco CA 94105-3493 Oracle Usa Inc 560 White Plains Rd Ste 200 Tarrytown NY 10591 Orrion Energy LLC 5555 Dtc Parkway Ste 310 Greenwood Village CO 80111 Orrion Energy, LLC (As Statoil Oil & Gas LP) 5555 Dtc Parkway Suite 310 Greenwood Village CO 80111 Orville Erickson Address On File Orville M Erickson Address On File Orville M. Erickson Address On File Oso Capital Ii LP PO Box 882 Midland TX 79701 Oti Electrical Services LLC PO Box 216 Andrews TX 79714 Otis One LLC 1037 Champion Hills Dr Kingston Springs TN 37082 Outlaw Well Service Inc 13930 Whitetail Circle Williston ND 58801 Ovintinv Usa Inc Mail Code 5035 Po Box 660367 Dallas TX 75266-0367 One Arts Plaza, 1722 Routh Ovintiv Production Inc. f/k/a Newfield Production Company c/o Thompson & Knight LLP Attn: Steven J. Levitt Street Suite 1500 Dallas TX 75201 Ovintiv Production Inc. f/k/a Newfield Production Company c/o Thompson & Knight LLP Attn: Tye C. Hancock & Anythony F. Pirraglia 811 Main Street Suite 2500 Houston TX 77002 Oxbow Energy Inc. Attn: P.S. Fritzler 7901 South Park Plaza Suite 2020 Littleton CO 80120 Oxy PO Box 841803 Houston TX 75284-1803 Oyhus Land Compan y 13973 Franks Creek Road Medora ND 58645 Ozark Exploration 3838 Oak Lawn Ave Ste 1525 Dallas TX 75219 Ozark Minerals LP 3838 Oak Lawn Ave Suite 1525 Dallas TX 75219 P L Swan Estate Address On File P.A. Weiss Address On File P2 Energy Solutions 1670 Broadway Suite 2800 Denver CO 80202 P2Es Holdings, Inc. 1670 Broadway Ste 2800 Denver CO 80202 Pace Analytical Services Inc PO Box 684056 Chicago IL 60695-4056 Packard Production LLC PO Box 54688 Oklahoma City OK 73154 Pacseis, Inc. 200 Clocktower Place, Suite D208 Carmel CA 93923 Page Petroleum LLC 220 East Rosser Ave #791 Bismarck ND 58502 Palace C/O Bistate Oil Mgmt Corp 10 E 40Th St Suite 2710 New York NY 10016 Paladin Inc PO Box 5062 Scottsdale AZ 85261-5062 Palo Alto Networks 3000 Tannery Way Santa Clara CA 95054 Panhandle Cooperative Association Po Box 2188 Scottsbluff NE 69363-2188 Panterra Petroleum PO Box 7168 Billings MT 59103-7168 Panther Inspection 14055 Country Lane Williston ND 58801 Panther Pressure Testers Inc PO Box 1109 Watford City ND 58854 Paradox Basin Data Paralee L Obele Address On File Park Place Technologies 5910 Landerbrook Drive Suite 300 Mayfield Heights OH 44124 Park Place Technologies LLC P O Box 78000 Dept 781156 Detroit MI 48278-1156 Pason Systems Usa Corp 7701 West Little York Ste 800 Houston TX 77040 Pathfinder Inspections & Field Services P O Box 3889 Gillette WY 82717 Patricia A Hart Address On File Patriot Well Solutions LLC PO Box 733846 Dallas TX 75373-3846 Patterson Uti Drilling Co LP Lllp Po Box 260111 Dallas TX 75326-0111 Patterson Uti Drilling Co LP PO Box 260111 Dallas TX 75326-0111 Patterson UTI Drilling Co LP Attn: William A. Hendricks, Jr. 10713 West Sam Houston Parkway North Suite 800 Houston TX 77064

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 30 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 34 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Patterson Uti Drilling Company LLC Attn: Bryan Colley 1125 17Th Street Suite 800 Denver CO 80202 Patterson-Uti Drilling Company LLC Lllp Po Box 260111 Dallas TX 75326-0111 Paul A Nystuen Address On File Paul B Melnychenko Address On File Paul Frederick Friesen & Address On File Paul Harrel Address On File Paul L Arnson Address On File Paul, Weiss, Rifkind, Wharton, & Garrison LLP Attn: Andrew Rosenberg and Alice Eaton 1285 6th Ave New York NY 10019 Paula Flude r Address On File Paula K Bear Address On File Paulson Liv Tst Dtd 3-25-10 Address On File Paylocity Corporation 3850 N Wilke Road Arlington Heights IL 60004 Pcs Ferguson Inc Jp Morgan Chase Bank Na Po Box 732131 Dallas TX 75373-2131 Pds Energy Information Inc. PO Box 1606 Austin TX 78767 Peak Grasslands LLC Attn: Jack Vaughn 1910 Main Avenue Durango CO 81301 Peak Grasslands, LLC Attn: Jack Vaughn 1910 Main Street Durango CO 81301 Peak Powder Resources LLC 383 Inverness Parkway Ste 470 Englewood CO 80112 Peak Well Service LLC PO Box 643 Roosevelt UT 84066 Pearce Durick PLLC 314 East Thayer Avenue Po Box 400 Bismarck ND 58502 Pearl Valley Oilfield Svcs & Rentals Llc Po Box 1263 Stanley ND 58784 Pec Expl 16400 N Dallas Parkway, Suite 400 Dallas TX 75248 Pec Exploration LLC 210 Park Ave Ste 2820 Oklahoma City OK 73102 Pedigree Technologies 4776 28Th Avenue South Suite 101 Fargo ND 58104 Peet Enterprises 60 Washington Sq S New York NY 10012 Pegasus Construction & Services Llc Po Box 1199 Freer TX 78357 Peloton Computer Enterprises Inc. 23501 Cinco Ranch Blvd Suite C220 Houston TX 77494

Pennzoil Exploration And Production Company Attn: P.L. Bruce 700 Milam P.O. Box 2967 Houston TX 77252-2967 Penroc Oil Corporation 1515 W Calle Sur St Ste 174 Hobbs NM 88240 Penroc Oil Corporation PO Box 2769 Hobbs NM 88241-2469 Penwell Properties LP 3838 Oak Lawn Suite 1216 Dallas TX 75219 Performance Energy Services Llc 2149 E Bridge St Brighton CO 80601 Performance Energy Services LLC Llc 2149 E Bridge St Brighton CO 80601 Performance Energy Services LLC-6800 Llc 2149 E Bridge St Brighton CO 80601 Performance Energy Services, LLC Llc 2149 E Bridge St Brighton CO 80601 Performance Lift Inc PO Box 69266 Odessa TX 79769 Perfx Wireline Services LLC PO Box 913107 Denver CO 80291-3107 Permian Exploration Corporation 118 West First Street Roswell NM 88203 Perry E Brown Iii Address On File Pete Dlugosch And Patricia Dlugosch Address On File Peter Helling Address On File Peter Joe Wolla Address On File Peter Masset Address On File Peter P And Ann Oppegaard Address On File Petralogos LLC 504 Spring Hill Dr # 390 Spring TX 77386 Petro Beacon Us Inc. PO Box 271210 Flower Mound TX 75027-1210 Petrogulf Corp 600 Grant St Ste 850 Denver CO 80203 Petro-Hunt LLC Rosewood Court 2101 Cedar Springs Road Suite 600 Dallas TX 75201 Petro-Hunt, L.L.C. Rosewood Court Dallas TX 75201 Petrol Shield LLC PO Box 239 Montrose CO 81402 Petroleum Experience Inc 4973 Highway 85 South Po Box 2436 Williston ND 58802 Petroleum Services Inc PO Box 1486 Williston ND 58801 Petronel LLC 14015 Margaux Lane Town & Country MO 63107 Petroshale Us Inc 303 E 17Th Ave, Suite 940 Denver CO 80203 Petrostar Services, LLC 4350 Lockhill Selma Rd Ste 150 San Antonio TX 78249 Petrovaughn Inc 12201 Merit Drive Suite 620 Dallas TX 75251 Pevehouse Inc 3300 N A St Bldg 1-201 Midland TX 79705 Pgs Onshore Inc 15375 Memorial Dr Ste 100 Houston TX 77079 Philips Petroleum Company Attn: J.P. Johnson 6330 West Loop South Bellaire TX 77401 Phillip Hurley And Laurie Hurle y Address On File Phillip L Stevens Address On File 58 Commerce Road Stamford CT 06902 Phillips 66 Company 58 Commerce Road Stamford CT 06902 Phillips Pt Arguello Production 925 North Eldridge Parkway Houston TX 77079 Phoebe H Gallowa y Address On File Phoenix Production Company PO Box 2653 Cody WY 82414-2653 Phyllis M Stevens-Manus Address On File Pierce Atwood LLP 900 17Th Street N.W. #350 Washington DC 20006 Piggyback Petroleum LLC PO Box 1208 Laramie WY 82073

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 31 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 35 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Pilot Energy Group LLC P O Box 2023 Williston ND 58802 Pilot Thomas Logistics LLC PO Box 677732 Dallas TX 75267-7732 Pine Petroleum Inc PO Box 6151 Bismarck ND 58506-6151 Ping Identity Corporation 1001 17Th Street Suite 100 Denver CO 80202 Pinnacle PO Box 459 Stanley ND 58784-0459 Pinyon Resources LP PO Box 2309 Fredericksburg TX 78624 Pionee r 220 S Taft St Lakewood CO 80228

300 Central Ave W #700, Pioneer Drilling C/O Jardine, Stephenson, Blewett & Weaver, Pc Attn: Robert Pfennigs P.O. Box 2269 Great Falls MT 59403 Pioneer Drilling Services Ltd PO Box 202569 Dallas TX 75320-2569 Pioneer Drilling Services Ltd Attn: Stacy Locke 1250 Northeast Loop 410 Suite 1000 San Antonio TX 78209 Pioneer Drilling Services, Ltd. PO Box 202569 Dallas TX 75320-2569 Pioneer Energ y 220 S Taft St Lakewood CO 80228 Pioneer Energy Inc-5783 220 S Taft St Lakewood CO 80228 Pioneer Energy, Inc. 220 S Taft St Lakewood CO 80228 Pioneer Natural Resources PO Box 840835 Dallas TX 75284-0835 Pioneer Natural Resources Co PO Box 840835 Dallas TX 75284-0835 Pioneer Well Services LLC PO Box 202563 Dallas TX 75320-2563 Pioneer Wireline Services PO Box 202567 Dallas TX 75320-2567 Pipe Renewal Service Inc PO Box 790010 Vernal UT 84078 Pipeglove LLC 9525 E 51St Street Suite A Tulsa OK 74145 Pitney Bowes Global Financial Services Llc Po Box 371887 Pittsburgh PA 15250-7887 Pitney-Bowes Global Financial LLC PO Box 371887 Pittsburgh PA 15250 Pitney-Bowes Global Financial LLC PO Box 371888 Pittsburgh PA 15250 Pivotal Dj Basin LP 2021 Mckinney Ave Ste 1250 Dallas TX 75201-7625 Placement Solutions LLC 4848 Highway 85 Lot 103 Williston ND 58801 Plains Markeing, L.P. 8111 Westchester Dr. Suite 600 Dallas TX 75225 Plains Marketing P O Box 4346, Dept 327 Houston TX 77210-4346 Plains Marketing PO Box 4346, Dept 327 Houston TX 77210-4346 Plains Marketing, L.P. 571 Highway 51 Suite E Ridgeland MS 39157 Plains Marketing, L.P. 8111 Westchester Dr. Suite 600 Dallas TX 75225 Contract Plains Marketing, L.P. 8811 South Yale Suite 200 Administration Tulsa OK 74137-3650 Plains Marketing, L.P. Contract Administration 5-3 P.O. Box 871 Tulsa OK 74102-0871 Plains Marketing, L.P. c/o Law Office of Patricia Williams Prewitt Attn: Patricia Williams Prewitt 10953 Vista Lake Court Navasota TX 77868 Plains Pipeline LP Greg Starling 333 Clay Street Suite 1900 Houston TX 77002 Platinum Measurement LLC PO Box 3507 Little Rock AR 72203-9934 Platte River Associates Inc 2790 Valmont Road Boulder CO 80304 Platte River Properties Inc 613 Hinsdale Dr Fort Collins CO 80526 Plotter Supplies Inc. 10475 Irma Dr Ste 2 Northglenn CO 80233 Pluralsight LLC 10355 South Jordan Gateway Suite 160 South Jordan UT 84095

17100 Calle Point Arguello Unit C/O Arguello Inc. C/O Project Manager Mariposa Reina Goleta CA 93117 Polar Midstream LLC 2300 Windy Ridge Pkwy Ste 840N Atlanta GA 30339 Polar Midstream, LLC Attn: Brock M. Degeyter 5910 North Central Expressway Suite 350 Dallas TX 75206 Polar Midstream, LLC c/o Akerman LLP Attn: John E. Mitchell and Yelena Archiyan 2001 Ross Avenue Suite 3600 Dallas TX 75201 Polar Midstream, LLC Originally Bear Tracker Energy, LLC 999 - 18Th St Suite 2500S Denver CO 80202 Polish Oil & Gas Inc PO Box 306 Bismarck ND 58502 Polsinelli 1401 Lawrence Street Suite 2300 Denver CO 80202 Polyflow LLC 2309 E Interstate 20 Midland TX 79706 Posse Operating Inc PO Box 1414 Dickinson ND 58602 Powder River Energy-6900 200 Garner Lake Road Gillette WY 82716 Power Service Inc PO Box 2870 Casper WY 82602 Prairie Petro Chem Of America Llp P O Drawer 1568 Williston ND 58801 Precision Measurement Inc PO Box 568 Watford City ND 58854 Premium Oilfield Products Dept 150 Po Box 4458 Houston TX 77210-4458 Presidio Networked Solutions PO Box 822169 Philadelphia PA 19182-2169 Prima Exploration Inc. 250 Fillmore Street Suite 500 Denver CO 80206 Prima Exploration Inc. Attn: Don Law 100 Fillmore Street Suite 400 Denver CO 80206 Pro Safe Pest Control 725 8Th Ave E Williston ND 58801 Production Lift Companies Inc PO Box 9423 Midland TX 79708 Profire Energy Inc 321 South 1250 West, Ste 1 Lindon UT 84042 Pronghorn Resources LLC 9280 Glenforest Dr Naples FL 34120 Providence Technologies, Inc. 3911 S Main St Roswell NM 88201 Proware 3909 South 147Th Street Suite 134 Omaha NE 68144 Ptc Inc. 121 Seaport Blvd Suite 1700 Boston MA 02114

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 32 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 36 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Ptw Energy Services Inc Dept Ct 19870 Palatine IL 60055-9870 Pulsar Properties LLC PO Box 30093 Edmond OK 73003 Pulse Secure, LLC 2700 Zanker Road Suite 200 San Jose CA 95134 Purity Oilfield Services LLC PO Box 732730 Dallas TX 75373-2730 Purity Oilfield Services LLC Attn: Marshall T. Hunt 2101 Cedar Springs Road Suite 650 Dallas TX 75201 Pwc 1900 16Th Street, Suite 1600 Denver CO 80202 Qep Energy Co 1050 17Th Street Suite 500 Denver CO 80265-1050 Qep Field Services LLC 19100 Ridgewood Parkway San Antonio TX 78259 Qep Field Services LLC Attn: Area Manager 19100 Ridgewood Parkway San Antonio TX 78269 Qep Field Services LLC Attn: General Counsel 19100 Ridgewood Parkway San Antonio TX 78259 Qep Field Services, LLC Attn: Area Manager 19100 Ridgewood Parkway San Antonio TX 78259 Qep Field Services, LLC Attn: General Counsel 19100 Ridgewood Parkway San Antonio TX 78259 Qep Field Services, LLC PO Box 871 Tulsa OK 74102-0871 Qpc 3, LP Qpc Inc Gen Ptnr Q P Courtney Iii, Pres Po Box 10004 Midland TX 79702-7004 Qpc3 LP Qpc Inc Gen Ptnr Q P Courtney Iii, Pres Po Box 10004 Midland TX 79702-7004 Quail Tools LLP PO Box 10739 New Iberia LA 70562-0739 Quale Trucking LLC 9552 41St Street Nw New Town ND 58763 Quality Mat Of North Dakota Llc 6550 Tram Rd Beaumont TX 77713 Quantum Measurement Services 11541 Hwy 23 Watford City ND 58854 Quantum Properties Inc PO Box 820467 Houston TX 77282 Questor Solutions & Technology Inc 15330 Flight Path Dr Brooksville FL 34604 Questor Solutions & Technology Inc Inc 15330 Flight Path Dr Brooksville FL 34604 Questor Solutions & Technology Inc-8596 Inc 15330 Flight Path Dr Brooksville FL 34604 Quick Connectors Incorporated 5226 Brittmoore Houston TX 77041 Quorum Business Solutions, Inc. PO Box 58965 Houston TX 77258-8965 R & R Oilfield Services & Pressure Testing 12218 302Nd Ave Mound City SD 57646 R L & Bobby Powell Ranch Ltd 3100 S Mcgregor Road Coahoma TX 79511 R3 Industrial Cleaning Services Llc Po Box 64369 Lubbock TX 79464 R360 Environmental Solutions Inc Po Box 671792 Dallas TX 75267-1792 Racer O&G Racer Oil PO Box 1548 Murray KY 42071 Racer Oil & Gas LLC PO Box 1548 Murray KY 42071 Rackspace 5000 Walzem Road San Antonio TX 78218 Rackspace Us Inc PO Box 732497 Dallas TX 75373-2497 Rackspace, Us Inc. 1 Fanatical Pl Windcrest TX 78218 Radiation Pros LLC 14 Inverness Dr East Ste A-220 Englewood CO 80112 Bankruptcy & Collections Railroad Commission of Texas c/o Office of the Attorney General of Texas Attn: Jason B. Binford & Abigail Ryan Division MC 008 PO Box 12548 Austin TX 78711-2548 Railroad Commission of Texas Office of General Counsel PO Box 12967 Austin TX 78711-2967 Rain For Rent Industrial Rental File 52541 Los Angeles CA 90074-2541 Rainbow 260 Lincoln Tower Bldg Denver CO 80203 Rainbow Energ y 260 Lincoln Tower Bldg Denver CO 80203 Rainbow Energy Marketing Corp 919 S 7Th St Ste 405 Bismarck ND 58504 Rainbow Gas Company 919 S 7Th Street Suite 405 Bismarck ND 58405 Ramona & Michael Lacey Address On File Randall C & Susan K Mosser Address On File Randall Olson Address On File Randy & Andrea Mull Address On File Randy & Linda Kleinjan Address On File Randy & Linda Kleinjan Jt Address On File Randy And Linda Kleinjan Address On File Randy Gumm Address On File Randy Gummn Address On File Randy Kleinjan And Linda Kleinjan, H/W, Jt Address On File Randy P Everett And Brenda H Everett Address On File Randys Welding Inc PO Box 483 Bowman ND 58623 Rapid Transport Ltd Po Drawer L Kermit TX 79745 Rapid7, LLC 120 Causeway Street Suite 400 Boston MA 02114 Raptor Lift Solutions LLC PO Box 672126 Houston TX 77267 Raptor Resources LLC 10390 39Th St North, Ste 4 Lake Elmo MN 55042 Raptor Technologies 631 W 22Nd St Houston TX 77008 Rattlesnake Field Services PO Box 1197 Worland WY 82401 Rauser Family Trust Address On File Raymond E Moore Address On File Raymond Resources Inc PO Box 113 Bismarck ND 58502-0113 609 Main Street Suite Rbc Capital Markets Attn: Rbc Capital Markets Llc C/O Rbc Richardson Barr 3700 Houston TX 77002 Rbc Capital Markets, LLC Attn: Craig Lande, Managing Director C/O Rbc Richardson Barr 4400 Post Oak Parkway Suite 2400 Houston TX 77002

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 33 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 37 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Rbs Tools Inc PO Box 1253 Roosevelt UT 84066-1253 Reb Clark Address On File Recast Software Inc 275 Market St Suite 534 Minneapolis Minnesota MN 55405 Reck Flyers LLC 7150 Hwy 392 Windsor CO 80550 Record Keepers, LLC 2101 Ith Avenue North Fargo ND 58102 Red Dog Systems Inc Suite 1100, 639 5Th Ave Sw Calgary AB T2P 0M9 Canada Red Gate Software Ltd Newnham House Cambridge Business Park Cambridge CB4 0WZ United Kingdom Red Hat, Inc. 100 East Davie Street Raleigh NC 27601 Red Oak Pipeline Red Oak Pipeline LLC Red Oak Pipeline LLC PO Box 421959 Houston TX 77242-1959 Red Rhino Resources LLC PO Box 3155 Bismarck ND 58502 Red River Resources Inc PO Box 366 Sidney MT 59270 Red River Supply Inc PO Box 1146 Williston ND 58802-1146 Red Rock Reef 2011 1901 N Central Expressway #300 Richardson TX 75080 Reef 2012 1901 North Central Expwy #300 Richardson TX 75080 Reeves County Tax District c/o McCreary, Veselka, Bragg & Allen, P.C. Attn: Tara LeDay PO Box 1269 Round Rock TX 78680 Refinery Specialties Inc PO Box 577 Hempstead TX 77445-0577 Regency Energy Services LLC 1648 S Cushman St Ste 205 Fairbanks AK 99701 Reger Oil LLC PO Box 1782 Billings MT 59103 Regions Bank c/o Kane Russell Coleman Logan PC Attn: Joseph M. Coleman 901 Main Street Suite 5200 Dallas TX 75202 Regus Management Group, LLC 700 Milam Suite 1300 Houston TX 77002 Rei Bakken 1901 N Central Expy Ste 300 Richardson TX 75080 Rei Bakken Partners 1901 N Central Expy Ste 300 Richardson TX 75080 Rennerfeldt Enterprises LLC 269 County Rd Tenafly NJ 07670 Republic Services Inc PO Box 78829 Phoenix AZ 85062-8829 Reseller: General Networks Corp 3524 Ocean View Blvd Glendale CA 91208 Reservation Telephone Cooperative 24 N Main Po Box 68 Parshall ND 58770 Resfeber LLC 12853 Terrace Lane Little Falls MN 56345 Resources Energy Can-Am, LLC 1805 Shea Center Dr. Ste. 100 Highlands Ranch CO 80129 Retamco Operating Inc PO Box 790 Red Lodge MT 59068 Retamco Operating, Inc PO Box 790 Red Lodge MT 59068 Retha M Netz Address On File Retha Mae Netz & Duane Netz Address On File Rex Korslien Address On File Rgd Trucking Inc 5073 146Th Ave Nw Williston ND 58801-9063 Rhinehart Oil Co Inc PO Box 418 American Fork UT 84003 Rhinokore Composite Solutions Usa Inc 538 W 21 Street #92690 Houston TX 77008-3642 Rian Hansen Address On File Rich Cub Family Trust Address On File Richard A Wisness Address On File Richard Burr Trust, Debra Kay Burr Trustee Address On File Richard C & Carolyn B Fyke Address On File Richard C & Carolyn B Fyke Address On File Richard D Siegal Estate Address On File Richard Nelson Address On File Rick Baile y Address On File Rig Anchors Inc PO Box 1208 Dickinson ND 58602 Riley Resources Inc PO Box 1615 Bismarck ND 58502 Rimrock 5445 Dtc Pkwy Ste 1250 Greenwood Village CO 80111 Rimrock Oil & Gas Williston, LLC Attn: Andre Baillargeon 5690 Dtc Boulevard Suite 670 E Greenwood Village CO 80111-3217 Rita M Earnest Address On File Rival Services LLC PO Box 297 Fort Morgan CO 80701 Rival Services, LLC 14400 Us Highway 34 Fort Morgan CO 80701 River Water LLC-6988 Riverbend Oil & Gas Vi LLC Two Allen Center 1200 Smith St Ste 1950 Houston TX 77002 1200 Smith St Riverbend Oil & Gas Vi-B LLC Attn: Colby Carpenter Two Allen Center Ste 1950 Houston TX 77002 Rivercrest Royalties Ii LLC 777 Taylor St Ste 810 Ft Worth TX 76102 Riverside Welding Inc PO Box 646 Walhalla ND 58282 Rj Fortune Investments LLC 9290 E Thompson Peak Pkwy Scottsdale AZ 85255 Rj Mann & Associates Inc 860 North 9Th Ave Brighton CO 80603 Rkd Consulting PO Box 1337 Palmer AK 99645 Rlcapps Family-2008 LP Address On File Rld Exploration LLC Attn Roger Daniel 2047 Broadwater Ave Ste 1 Billings MT 59102 Rms Cranes 1900 E 66Th Ave Denver CO 80229 Rn Industries Trucking Inc PO Box 98 Roosevelt UT 84066 Robert A Michie Address On File

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 34 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 38 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Robert Behm Address On File Robert C Clark Address On File Robert E Franklin Address On File Robert H Coombs Address On File Robert Harms Address On File Robert Holland Address On File Robert J Sheldon Address On File Robert Lee Bean Address On File Robert Lester Dwyer Address On File Robert Mau Address On File Robert Rohn Address On File Robert W Calcote Address On File Robert Wayne Magee Address On File Roberta Jean Miller Family Tr Address On File Roberta Jean Miller Family Tr, Michelle Lingle - Trustee Address On File Robyn A Moore Hutchison Address On File Rock Eagle Ranch Corporation PO Box 458 Bellaire TX 77401 Rockwater Energy Solutions PO Box 203997 Dallas TX 75320-3997 Rocky Mountain Imaging LLC 901 S Vine St Denver CO 80209 Rocky Mountain Oil Journal 701 S Logan St Ste 112 Denver CO 80209 Rocky Mountain Power-8510 Generation Inc 6301 N Broadway Denver CO 80216 Rodan Transport Usa Ltd Dba Aveda Transportation & Energy Services Po Box 677619 Dallas TX 75267-7619 Rodney & Verna Lou Wolf Address On File Rodney Kosteleck y Address On File Roger And Betty Dahl Fam Trust Address On File Roger Anderson And Marion Anderson Address On File Roger L Beavers Inc PO Box 5998 Norman OK 73070 Roger S Allick Address On File Rogers Winch Inc PO Box 700 Watford City ND 58854 Rogii Inc 11750 Katy Freeway Suite 1010 Houston TX 77079 Rogii Inc 11750 Katy Freeway Ste 1010 Houston TX 77079 Rogii Inc. 11750 Katy Freeway Ste 1010 Houston TX 77079 Rogue Pressure Services Ltd PO Box 204604 Dallas TX 75320-4604 Rolfson Oil LLC PO Box 77063 Cleveland OH 44194-7063 Ronald C Sylte Address On File Ronald E Hansen Address On File Ronald E Sater Alvrone Sater Address On File Ronald Hartman Address On File Roosevelt County Clerk 400 2Nd Avenue South Wolf Point MT 59201 Roscoe L Carnrike Address On File Rosewood Resources, Inc. Dept 41300, PO Box 650283 Dallas TX 75265 Rosie Lee Bean Rylande r Address On File Rosie Mae Bean Address On File Ross A Kaufman Address On File Ross Kaufman Address On File Roto-Versal Compression Services Llc Po Box 841035 Houston TX 77284 Roughrider Electric Coop Inc PO Box 1038 Dickinson ND 58602-1038 Roughrider Electric Coop Inc-4897 PO Box 1038 Dickinson ND 58602-1038 Rowdys Oil Co Inc 1214 Hillcourt Williston ND 58801-4354 Roy & Opal Barton Revocable Address On File Roy Barton Address On File Roy E Guinnup Address On File Roy G Barton J r Address On File Roy L Thornton Address On File Roy Thornton Address On File

Royal Bank Of Canada Attn: Managing Director, Grm Trading Credit Risk 2Nd Floor Royal Bank Plaza 200 Bay Street Toronto ON M5J 2W7 Canada Royal Cup, Inc. PO Box 841000 Dallas TX 75284 Royalty Interests Partnership 510 Bering Dr Suite 600 Houston TX 77057 Rpm Swabbing Service Co P O Box 3106 Victoria TX 77903 Rs Energy Group 600 Travis St Ste 750 Houston TX 77002 Rs Energy Group Inc 600 Travis St Ste 750 Houston TX 77002 Rs Energy Group, Inc. 600 Travis Street Suite 750 Houston TX 77002 Rtc 105 Rtc Dr. Reserve LA 70084 Rtd Regional Transportation District Po Box 912380 Denver CO 80291-2380 Rtr Oilfield Services LLC 30501 198Th St Sw Ryder ND 58779 Ruby L Fox Address On File Rudman Partnership 4851 Lbj Freeway Ste 210 Dallas TX 75244 RudoLPh & Deborah Urban Rev Tr Address On File

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 35 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 39 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country RudoLPh Gregory Jr & Billie Address On File Rusco Operating LLC Attn: Xuan Yong 98 San Jacinto Blvd Suite 550 Austin TX 78701 Rusco Operating LLC. PO Box 123850 Dallas TX 75312-3850 Rusco Operating, LLC (Rigup)-8740 PO Box 123850 Dallas TX 75312-3850 Russell D Evitt Address On File Russell D Gribbon 2001 Address On File Russell S Sampson Address On File Russell T Rudy Energy LLC 5701 Woodway Dr Ste 346 Houston TX 77057 Ruth Chapman Cowles & Andrew Address On File Ruth Michelle Weave r Address On File Ruth Parker Wood Rev Trust Address On File Ruth Parker Wood Rev Trust, Lana Conklin & Crystal Henzi Address On File Rwls LLC PO Box 862 Levelland TX 79336 Ryan & Co. Three Galleria Tower 13155 Noel Road Suite 100 Dallas TX 75240 Ryan Moore Ssmtt Gst Exempt Address On File Ryan Moore Ssmtt Gst Non-Exmpt Address On File Ryan, LLC PO Box 848351 Dallas TX 75284-8351 6100 South Yale Avenue, Rz Inc Zeneco Inc Fka Rz Inc One Warren Place Suite Tulsa OK 74136 S & C Lundberg S & K Stack Testing Inc PO Box 385 Watford City ND 58854 S Gordan Reese Jr Address On File S Reger Family Inc Address On File Sabre Production Services LLC 11801 Hwy 2 & 52 West Burlington ND 58722 Legal Saddle Butte Assets, LLC 858 Main Ave Suite 31 Department Durango CO 81301 Sadler Law Firm, LLP 1900 West Loop South Suite 700 Houston TX 77027-3282 Safe Software Inc. 9639 137A Street Suite 1200 Surrey BC V3T 0M1 Canada Safely Family Trust,1St Natl Address On File Safety-Kleen Systems Inc PO Box 382066 Pittsburgh PA 15250-8066 Sagemcom 14651 Dallas Pkway #900 Dallas TX 75254 Salazar Service & Trucking Corp 1360 S Us Hwy 385 Andrews TX 79714 Sam Ross Sloan Iii Address On File Sandhill Petrol LLC Attn: Lewis & Jill Wilks 4675 S Vine Way Englewood CO 80113 Sandra & Cliffton Levorsen J/T Address On File Sandy River Energy LLC PO Box 633 Bismarck ND 58502 Sandy River Resources LLC PO Box 633 Bismarck ND 58502 Sanish Properties LLC 700 West Harbor Dr #1104 San Diego CA 92101 Santa Elena Minerals LP 400 W Illinois Ave Ste 1300 Midland TX 79701 Sara Strain Address On File Sarah Jenkins Knudson Address On File Sas Institute Inc. Sas Campus Drive Cary NC 27513 Satra Insulation & Address On File Savage Services Corporation 901 W Legacy Center Way Midvale UT 84047 Savanna Well Servicing Corp PO Box 740 Dickinson ND 58602 Sbg Energy LLC/Rud Transportation-4568 PO Box 13238 Grand Forks ND 58208 Sbg Pipeline Sw3903 LLC-6381 Schlegel Trucking LLC 225 Parker Lakes Rd Bigfork MT 59911 Rod Lift Rod Lift Consulting Division 713 Market Dr Oklahoma City OK 73114 Schlumberger Technology Corporation P O Box 732149 Dallas TX 75373-2149 Schlumberger Technology Corp P O Box 732149 Dallas TX 75373-2149 Schlumberger Technology Corporation 5599 San Felipe Suite 100 Houston TX 77056-2722 Schlumberger Technology Corporation Attn: Alexander C. Juden 5599 San Felipe 17th Floor Houston TX 77056 Schlumberger Technology-63 P O Box 732149 Dallas TX 75373-2149 Schulke Enterprises LLC 49361 Us 71 Bemidji MN 56601 Scorpion Oil & Gas Corp Two Allen Center 1200 Smith St Ste 1950 Houston TX 77002 Scott & Colleen Lundberg Jt Address On File Scott Davidson Address On File Scott Energy LLC 1010 1St Avenue East Williston ND 58801 Scott Johnson Address On File Scott Jones Address On File Scott Meiers Address On File Scout Energy Management LLC 1010 1St Avenue East Williston ND 58801 Scuba Steves Mobile Wash LLC 3309 134Th Ave Sw Belfield ND 58622-9358 Secure Energy Services Usa LLC 5807 Front Street West Williston ND 58801 Securities and Exchange Commission 100 F Street, NE Washington DC 20549 Securities and Exchange Commission Attn: Andrew Calamari, Regional Director New York Regional Office 200 Vesey St Suite 400 New York NY 10281-1022 Securities and Exchange Commission Attn: Jolene M. Wise 175 W. Jackson Blvd Suite 1450 Chicago IL 60604

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 36 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 40 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country 825 26Th Ave Seesaw Energy LLC First Western Bank & Trust Attn: Trust Dept East West Fargo ND 58078 Seisco, Inc. 5701 Crawford Street Suite H New Orleans LA 70123 Seisco, LLC 5701 Crawford Street Suite H New Orleans LA 70123 Seisco, LLC 915 S. White Street New Orleans LA 70125 Seismic Exchange Inc 4805 Westway Park Blvd Houston TX 77041 Seismic Exchange, Inc. 11050 Capital Park Drive Houston TX 77041 Seismic Micro-Technology, Inc 8584 Katy Freeway Suite 400 Houston TX 77024 Seispro, LLC 1776 Yorktown Suite 500 Houston TX 77056 Seitel Data, Ltd. c/o Clark Hill Strasburger Attn: Duane J. Brescia 720 Brazos Suite 700 Austin TX 78701 Building C Seitel Date, Ltd. Attn: Legal Department 10811 S Westview Circle Drive Suite 100 Houston TX 77043 Sempera Professional Services 400 Inverness Parkway, Suite 260 Englewood CO 80112 400 Inverness Parkway, Suite Sempera Professional Services Inc. 260 Englewood CO 80112 Sentinelone 605 Fairchild Dr. Mountain View CA 94043 Sentry Crane Services PO Box 10638 Eugene OR 97440 Sentry Crane Services Attn: Michael Waliezer 1505 21st Ave NW Watford City ND 58854 Seven Lakes Enterprises, Inc. 2555 Townsgate Road Sulite 105 Westlake Village CA 91361 Seven Lakes Technologies 2535 Townsgate Rd Ste 305 Westlake Village CA 91361-5980 Shakti Energy LLC PO Box 6115 Edmond OK 73083 Shale Oilfield Services LLC PO Box 11404 Williston ND 58803 Sharla Fay Bruun Address On File Sharon Evans Survivors Trust Address On File Sharon K Churchman Address On File Sharri Cvancara Address On File Shay L Scanlan Address On File Sheila J Hendrickson-Machler Address On File Shell Trading (Us) Company 1000 Main Street Level 12 Houston TX 77002 Shell Trading (Us) Company 1000 Main, Level 12 Attn: Tina Jones Houston TX 77002 Shell Trading (Us) Company Midland Lease Crude Po Box 791 Midland TX 79702 Gas Marketing Us Commercial Shell Trading (Us) Company PO Box 2040 Group Houston TX 77252 Shell Trading Company 1000 Main, Level 12 Attn: Tina Jones Houston TX 77002 Shell Western E&P Inc. PO Box 576 Houston TX 77001 Sheridan Co., Mt 100 W Laurel Ave Plentywood MT 59254 Sherman & Howard, LLC 633 Seventeenth Street Suite 3000 Denver CO 80202 Sherran Petroleum LLC PO Box 35 Guffey CO 80820-0035 Sherwood Enterprises Inc PO Box 950 Big Piney WY 83113 Shift Services LLC 5140 134Th Ave Nw Williston ND 58801 Shine Unlimited LLC 31017 N 61St St Cave Creek AZ 85331 Shon David Fandrich Address On File Sidney S Tatum Address On File Siegfried Group LLP 1201 N Market St Ste 700 Wilmington DE 19801 Siegfried Group LLP 1201 N. Market St., Suite 700 Wilmington DE 19801 Siemens Energy, Inc. 10730 Telge Road Houston TX 77095 Sierra Chemicals Lc 135 Brunett Dr Unit 4 Durango CO 81301 Sierra Hamilton LLC 900 Threadneedle Ste 150 Houston TX 77079 Sierra Resources Inc 5121 Gaillardia Corporate Pl Oklahoma City OK 73142 Silverline Services LLC 1287 Diamond Valley Dr Windsor CO 80550 Simpson Thacher & Bartlett LLP Attn: Sandeep Qusba and Kathrine McLendon 425 Lexington Avenue New York NY 10017 Sinclair O&G PO Box 30825 Salt Lake City UT 84130 Sinclair Oil PO Box 30825 Salt Lake City UT 84130 Sinclair Oil & Gas Company PO Box 30825 Salt Lake City UT 84130 Singlewire 2601 West Beltline Highway Suite 510 Madison WI 53713 Sioux Holdings LLC 10390 39Th Street North Ste 4, Lake Elmo MN 55042 Sirius Controls Inc. 1600 Cotton Flat Rd Midland TX 79701 Sixty Nine Oil & Gas LP PO Box 101265 Fort Worth TX 76185 Skillsoft 300 Innovative Way, Suite 201 Nashua NH 03062 Skillsoft Corporation Bank Of America Po Box 405527 Atlanta GA 30384-5527 Skm Systems Analysis Inc 1 Pearl Street Redondo Beach CA 90277 Skoglund Excavating Inc PO Box 209 Moffat CO 81143 Slalom Consulting PO Box 101416 Pasadena CA 91189-1416 Slash V LLC 23 Alles Drive Greeley CO 80631 Slawson Expl 727 N Waco Ste 400 Wichita KS 67203 Slawson Exploration 727 N Waco Ste 400 Wichita KS 67203 Slawson Exploration Co 727 N Waco Ste 400 Wichita KS 67203 Slawson Exploration Co, Inc 727 N Waco Ste 400 Wichita KS 67203 Slawson Exploration Company 727 N Waco Ste 400 Wichita KS 67203

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 37 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 41 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Slawson Exploration Company Inc 727 N Waco Ste 400 Wichita KS 67203 Slawson Exploration Company, Inc 727 N Waco Ste 400 Wichita KS 67203 Slawson Exploration Company, Inc. 727 N Waco Ste 400 Wichita KS 67203 Slawson Resources Co 727 N Waco Ste 400 Wichita KS 67203 Slawson Resources Co Coni J Stokes A-I-F 727 N Waco Suite 400 Wichita KS 67203 Slawson Resources Company 727 N Waco Ste 400 Wichita KS 67203 Slipstream Environmental Services Llc 2536 Rimrock Ave Ste 400 Box 288 Grand Junction CO 81505 Slipstream Environmental Services 772 Airfield Lane Sheridan WY 82801 Sm Energy Company 3300 A Street Building 7, Suite 200 Midland TX 75606 Sm Energy Company (Williston Office Purchase)-8682 Department 766 Denver CO 80291-0766 Sm Fencing & Energy Services 11074 32 E St Sw Dickinson ND 58601 Smithies Hotshot Service LLC 10805 32Nd St Sw Dickinson ND 58601 Snyder Oil Corporation P O Box 970102 Dallas TX 75397 Solarwinds Itsm Us Inc PO Box 730720 Dallas TX 75373 Sompo International Holdings Ltd. 750 3Rd Ave Ste 18 New York NY 10017 Sool Ltd PO Box 2237 Midland TX 79702-2237 Sool, Ltd PO Box 2237 Midland TX 79702-2237 Sound & Cellular Inc 2800 Pheasant Dr Casper WY 82604 Sourcerock Exploration LLC 1600 Stout Street Suite 1850 Denver CO 80202 Sourcerock Exploration, LLC 1600 Stout St. Ste. 1850 Denver CO 80202 South Point Properties LLC PO Box 7386 Houston TX 77248 Souther Solutions, Inc. 12337W 6Th Pl. Golden CO 80401 Southwest Royalties Inc PO Box 53570 Midland TX 79710-3570 Spec Tech Threading Inc PO Box 1133 Williston ND 58802-1133 Spec-Tech 6203 S 39Th West Ave Tulsa OK 74132 Spl Solutions 5057 Owan Industrial Park Unit 5 Williston ND 58801 Spl Southern Petroleum Lab Inc PO Box 842013 Dallas TX 75284-2013 Split Creek Enterprises LLC 6311 N Lakepoint Pl Parker CO 80134 Split Creek Enterprises, LLC 6311 N Lakepoint Pl Parker CO 80134 Split Rock Services Inc PO Box 10445 Williston ND 58803 Spn Well Services Inc PO Box 201934 Dallas TX 75320-1934 Spring Creek Exp & Prod Co LLC 1200 17Th St Ste 2000 Denver CO 80202 Spyco Oilfield Services LLC PO Box 1145 Vernal UT 84078 Sql Sentry, LLC, D/B/A Sentryone 4001B Yancey Rd Charlotte NC 28217 Srekait, LLC PO Box 497 Hartland WI 53029 St Croix Exploration Co PO Box 13799 Denver CO 80201 St Croix Exploration Company PO Box 13799 Denver CO 80201 Stabil Drill Specialties LLC Dept 2162 Po Box 122162 Dallas TX 75312-2162 Stackd Oil Tools LLC PO Box 1015 Vernal UT 84078 Stadium Management Company, LLC 13655 Broncos Parkway Englewood CO 80112 Stadium Management Company, LLC Attn: Denver Broncos Ticket Office 1701 Bryant Street Suite 100 Denver CO 80204 1701 Bryant C/O Sports Authority Field At Street Suite Stadium Management Company, LLC Attn: Denver Broncos Ticket Office Mile High 100 Denver CO 80204 Stadium Management Company, LLC Attn: General Counsel 13655 Broncos Parkway Englewood CO 80112 Stallion Oilfield Services Ltd. 950 Corbindale Rd Ste 400 Houston TX 77024 Standard Automation And Control /Dba: Wonderware West 601 Travis Street Suite 1850 Houston TX 77002 Standard Energy Services Drawer #2235 Po Box 5935 Troy MI 48007-5935 Stanley A & Janet I Lambert Address On File Stanley Convergent Security Solutions Dept Ch 10651 Palatine IL 60055 Stanley Convergent Security Solutions All Whiting Office Buildings And Stg Yards 7399 S Tuscon Way Centennial CO 80112 Stanley Convergent Security Solutions, Inc. Solutions Dept Ch 10651 Palatine IL 60055 Stanley T Anderson Address On File State of Louisiana Department of Natural Resources, Office of Mineral Resources c/o Civil Division/Lands & Natural Resources Attn: Ryan M. Seidemann PO Box 94005 Baton Rouge LA 70804-9005 State Of North Dakota 1707 North 9Th St. Bismarck ND 58506-5523 State Of North Dakota P O Box 5623 Bismarck ND 58506 Statoil 5555 Dtc Parkway Suite 310 Greenwood Village CO 80111 Steakley, Wetsel & Carmichael, L.L.P. The Newman Building 207 Oak Street Streetwater TX 79556 Stealth Oilwell Services LLC PO Box 69063 Odessa TX 79769 Steel Energy Services, Ltd. dba Black Hawk Energy Services, Ltd. and Sun Well Service, Inc. Attn: Stewart J. Peterson 5265 Ronald Reagan Blvd Suite 100 Johnstown CO 80534-6513 Steele Resources LLC 9155 S Dadeland Blvd Ste 1800 Miami FL 33156 Steffes Solutions LLC 3050 Highway 22 N Dickinson ND 58601 Stein Advisors LLC Address On File Stephen A Wells Address On File Stephens & Johnson Operating Address On File Stephens Production Company PO Box 2407 Ft Smith AR 72902-2407

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 38 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 42 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Sterling Energy Investments LLC 1200 - 17Th Street Suite 2850 Denver CO 80202 Sterling Energy Investments LLC 1200 17Th Street Suite 285 Denver CO 80202 Steven Begleite r Address On File Steven H Harris Family LP Address On File Steven H Harris Family Ltd Address On File Steven H Harris Family Ltd Ptnr Address On File Steven L Berry & Address On File Steven Meyer Address On File Steven W Erickson Address On File Stewards Oil LP 2600 Dallas Pkwy Ste 400 Frisco TX 75034 Stickman Inc PO Box 1400 Vernal UT 84078 Stikeman Elliott Address On File Stim-Tech Inc 1575 Dewar Dr #220 Rock Springs WY 82901 Stinger Testing Inc PO Box 788 1401 E 1100 S Vernal UT 84078 Stone House LLP PO Box 693 Arnegard ND 58835 Stoner Engineering LLC 1010 10Th Street Suite 104 Golden CO 80401 Stoppleworth & Sons Inc PO Box 758 301 N Main Street Belfield ND 58622 Stormwind LLC 14646 N. Kierland Blvd. Suite 120 Scottsdale AZ 85254 Strata Minerals Inc PO Box 21055 Oklahoma City OK 73156 Strata Networks 211 East 200 North Roosevelt UT 84066 Strata Resources 288 Clayton St Ste 206 Denver CO 80206 Strata Resources Inc 288 Clayton St Ste 206 Denver CO 80206 Stratex Oil & Gas Inc 1669 Thomaston Ave Waterbury CT 06704-1026 Stratum Reservoir, LLC. 16161 Table Mountain Pkwy Golden CO 80403 Stratum Reservoir, LLC. 7409 W. Industrial Ave. Midland TX 79706 Streeter Ranch Address On File Stretto 410 Exchange Ste. 100 Irvine CA 92602 Stuart Family Trust Address On File Stubbs & Stubbs Oilfield Construction Inc Po Box 32 Vernal UT 84078 Frost Bank Suemar Exploration & Production, LLC 802 N. Carancahua Suite 1000 Plaza Corpus Christi TX 78470-0400 Frost Bank Suemaur Exploration & Production, LLC 802 N. Carancahua Suite 1000 Plaza Corpus Christi TX 78470-0400 Summerfield C Baldridge Address On File Summit Esp LLC PO Box 21468 Tulsa OK 74121 Summit Midstream 910 Louisiana Street, Suite 4200 Houston TX 77002 Summit Midstream Partners LLC-8529 910 Louisiana Street, Suite 4200 Houston TX 77002 Summit Midstream Partners, LLC 910 Louisiana Street, Suite 4200 Houston TX 77002 13155 Noel Road Po Box Sun Operating Limited Partnership Attn: T. Gladney C/O Oryx Energy Company 2880 Dallas TX 75221-2880 Sun Tubular Testing Services Inc 4989 Lake View Loop Williston ND 58801 Sun Well Service Inc P O Box 204594 Dallas TX 75320-4594 Sun Well Service Inc Attn: Kevin Jeffreys 5265 Ronald Reagan Blvd Suite 100 Johnstown CO 80534-6513 Sunbehm Gas Inc PO Box 608 Minot ND 58702-0608 Sundheim Oil Corp Attn Dennis Sundheim Po Box 230 Crosby ND 58730 Sundheim Oil Corp PO Box 230 Crosby ND 58730 Sundheim Oil Corporation Attn Dennis Sundheim Po Box 230 Crosby ND 58730 Gas Marketing Us Commercial Sunoco Partners Markeitng & Terminal L.P. PO Box 2040 Group Houston TX 77252 Sunoco Partners Markeitng & Terminal L.P. Contract Administration PO Box 5103 205 West Maple Suite 1100 Enid OK 73702-5103 Sunset Production Corp P O Box 2239 Georgetown TX 78627-2239 Sunset Production Corporation PO Box 2239 Georgetown TX 78627-2239 Sunstate Equipment Co LLC PO Box 52581 Phoenix AZ 85072-2581 Suntrust Robinson Humphrey, Inc. 200 Park Ave New York NY 10166 Super Heaters Of North Dakota Llc Po Box 421328 Houston TX 77242-1328 Superior Production Logging Inc 220 Industrial Ave Granbury TX 76049 Surefire Wireline West LLC 233 North Park Dr Kittanning PA 16201 Surviving Trustors Trust Of Address On File Susan Bush Goodman Address On File Susan J & Dean T Kautzman, Jt Address On File Susan M Kopp Address On File Susan M Link Address On File Susan Urban-Dumm Revocable Address On File Susman Godfrey LLP 1000 Louisiana Street Suite 5100 Houston TX 77002 Sven Resources LLC 550 Vanderbilt Ave Apt 1418 Brooklyn NY 11238 Swat Consulting Inc 12514 16 Mile Road Marshall MI 49068 Swc Production Inc 210 Park Ave Ste 2820 Oklahoma City OK 73102 Sweetwater Co., Wy Et Al 80 W. Flaming Gorge Way Green River WY 82935

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 39 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 43 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Swing Trucking Inc Box 199 Worland WY 82401 Swing Trucking Inc-4539 Box 199 Worland WY 82401 System Tools Systems Analysis, Inc. One Pearl Street Redondo Beach CA 90277 T & B Lenihan Address On File T & B Lenihan Address On File T & S Service Inc Box 973 Gillette WY 82716 T F Hudgins Incorporated Dept 859 Po Box 4346 Houston TX 77210-4346 T Lazy T Ranch 13633 Upper Magpie Road Fairfield ND 58627 T&T Measurements Inc 10671 43Rd St Nw Newtown ND 58763 Tab Products Co LLC 12330 E 46Th Avenue Suite 500 Building 1 Denver CO 80239 Tab Products Co LLC 24923 Network Place Chicago IL 60673-1249 Tactical Consulting Services Llc Po Box 80 Williston ND 58802 Tallgrass Midstream LLC Attn: Accounts Receivable 370 Van Gordon St Lakewood CO 80228 Tallgrass Midstream, LLC 307 Van Gordon St. Lakewood CO 80228 Tallgrass Midstream, LLC Contract Administration PO Box 5103 205 West Maple Suite 1100 Enid OK 73702-5103 Tally Construction LLC 745 Mustang Ave Dickinson ND 58601 Tanya Harper Address On File Targa 23613 Network Place Chicago IL 60673-1236 Attn: General Targa Badlands LLC 1970 East 3Rd Avenue Suite 205 Counsel Durango CO 81301 Targa Badlands LLC Originally Saddle Butte Pipeline, LLC Attn: Contract Administration PO Box 5103 205 West Maple Suite 1100 Enid OK 73702-5103 Targa Badlands LLC Previously Saddle Butte Pipeline, LLC PO Box 844 Houston TX 77001 Attn: General Targa Badlands LLC-8531 1970 East 3Rd Avenue Suite 205 Counsel Durango CO 81301 Targa Midstream Services LLC PO Box 844 Houston TX 77001 Targa Midstream Services LLC PO Box 871 Tulsa OK 74102-0871 Taylor John Engum Address On File Tdw LLC C/O Tim Doppler 1070 Westwood Street Bismarck ND 58504 Tdw, LLC C/O Tim Doppler 1070 Westwood Street Bismarck ND 58504 Techniche Americas LLC Suite 300 5857 Owens Avenue Carlsbad CA 92008 Telerik Inc. (Dba Progress Software Corporation) 14 Oak Park Drive Bedford MA 01730 Terry E Njos Address On File Terry L Gimbel Address On File Terry Njos Address On File Terry S Mcivor Address On File Tervita Environmental Services 1801 California St, 50Th Fl Denver CO 80202 Tesoro 19100 Ridgewood Parkway San Antonio TX 78529

Tesoro High Plains Pipeline Company LLC 19100 Ridgewood Parkway Logistics Contract Administrator San Antonio TX 78529 Attn: Area Manager, Pipeline Tesoro Logistics LP (Qep Field Services LLC) 19100 Ridgewood Parkway And Terminals Nd And Mt San Antonio TX 78259 Attn: Area Manager, Pipeline Tesoro Logistics LP (Qep Field Services) 19100 Ridgewood Parkway And Terminals Nd And Mt San Antonio TX 78259 Tesoro Logistics Operations LLC (Tlo)-8534 19100 Ridgewood Pkwy San Antonio TX 78259 Tesoro Refining & Marketing Company LLC PO Box 871 Tulsa OK 74102-0871 Tesoro Refining & Marketing Company LLC P.O. Drawer 2360 455 North Poplar Casper WY 82602 Tesoro Refining And Marketing 19100 Ridgewood Pkwy San Antonio TX 78259 Texaco Exploration And Production Inc. Attn: R.W. Hill 1970 China Grade Loop Road Bakersfield CA 93308 Texas Commission on Environmental Quality Attn: Legal PO Box 13087 Austin TX 78711-3087 Texas Independent Exploration 6760 Portwest Dr Houston TX 77024 Texas Office Of The Attorney General 300 W. 15Th St Austin TX 78701 Tex-Mex Construction, Inc 458 6Th St Hoboken NJ 07030 Attn: Andrew N. Rosenberg, Alice Belisle Eaton, The Ad Hoc Committee of Noteholders c/o Paul, Weiss, Rifkind, Wharton & Garrison LLP Michael M. Turkel & Omid Rahnama 1285 Avenue of the Americas New York NY 10019 Attn: John F. Higgins, Eric M. English and The Ad Hoc Committee of Noteholders c/o Porter Hedges LLP Genevieve M. Graham 1000 Main Street 36th Floor Houston TX 77002 The Armstrong Corp PO Box 1999 Dickinson ND 58602-1999 The Armstrong Corporation PO Box 1999 Dickinson ND 58602-1999 The Bank of New York Mellon Trust Company, N.A. Attn: Jennifer J. Provenzano 505 Ross Street 12th Floor Pittsburgh PA 15262 Attn: Michael J. The Bank Of New York Mellon Trust Company, N.A. 919 Congress Avenue Suite 500 Ulrich Austin TX 78701 The Bank of New York Mellon Trust Company, N.A. Attn: Jennifer J. Provenzano 2 North LaSalle 7th Floor Chicago IL 60602 The Bank of New York Mellon Trust Company, N.A. Corporate Trust Division-Corporate Finance Unit 101 Barclay Street New York NY 10286 The Bank Of Nova Scotia Attn: Global Markets Documentation 40 King Street West Scotia Plaza 8Th Floor Toronto ON M5H 1H1 Canada The Bureau Of National Affairs, Inc. (Bloomberg Bna) Bloomberg Tax 1801 South Bell Street Arlington VA 22202 The Dennis Earl Urban Address On File The Dublin Co PO Box 783 Williston, ND 58802-0783 The Dublin Co. PO Box 783 Williston ND 58802-0783

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 40 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 44 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country The Estate Of Marvin Cass Address On File The Fairchild Legacy LLC PO Box 270121 Fort Collins CO 80527 The Joy Partners Ltd PO Box 576 Ardmore OK 73402 The Mehl Trust Address On File The Millennium Corp PO Box 2353 Williston ND 58802-2353 The Monson Family Trust, Mitchell Monson, Ttee Address On File The Pfanenstiel Company LLC PO Box 12928 Oklahoma City OK 73157 The Rolland W Hoops And Charlotte M Hoops Trust, C/O Richard G Hoops 7006 Johnson Circle Mowpt CO 80503 The Rudman Partnership 4851 Lbj Freeway Ste 210 Dallas TX 75244 The Sater Family Partnership Address On File The Triple T First Western Bank & Trust 825 26Th Ave E West Fargo ND 58078 The Triple T Inc First Western Bank & Trust 825 26Th Ave E West Fargo ND 58078 The Unclaimed Property Division of the Texas Comptroller of Public Accounts c/o Office of the Attorney General of Texas Attn: Jason B. Binford & Abigail Ryan PO Box 12548 MC 008 Austin TX 78711-2548 The Unclaimed Property Division of the Texas Comptroller of Public Accounts c/o Office of the Attorney General of Texas Attn: Jason B. Binford & Abigail Ryan PO Box 12548 MC 008 Austin TX 78711-2548 The Urban Living Trust Address On File Thelma Eileen Reeves Address On File Theodore J Weltzin Trust Address On File Thistle, Inc. 21 Inverness Way East Englewood CO 80112 Thistle, Inc. 5211 South Quebec Street Greenwood Village CO 80111 Thomas & Bonita Lenihan Jt Address On File Thomas C Arnson Address On File Thomas Dickson Address On File Thomas Family Ltd Partnership Address On File Thomas G Baxte r Address On File Thomas G Trostel Address On File Thomas J Irgens Address On File Thomas Knight Bulliard Address On File Thomas Lenihan & Bonita Lenihan, J/T Address On File Thomas M Gunderson Address On File Thomas N Berry & Company PO Box 1958 Stillwater OK 74076 Thomas P Blakeway J r Address On File Thomas R Mertens Agent For Rjm Land Company LLC Address On File Thompson Reuters 2395 Midway Road 2395 Midway Road Carrollton TX 75006 Bldg. 1, M/S Thomson Reuters (Tax & Accounting), Inc. Attn: Cs&S Contract Administration 2395 Midway Road 175 Carrollton TX 75006-9769 Thoughttrace, Inc. 33126 Magnolia Circle, Suite B Magnolia TX 77354 Thru Tubing Solutions Inc PO Box 203379 Dallas TX 75320 Tibco Software, Inc. 3303 Hillview Avenue Palo Alto CA 94304-1213 Tiga 201 W Vermilion St Ste 100 Lafayette LA 70501 Tiger Well Service LLP PO Box 1096 Watford City ND 58854 Tim Bruun Address On File Tim Martin Address On File Tim Roen Address On File Tim W Olson Construction Inc 12525 Hwy 20 Po Box 513 Buffalo SD 57720 Timberlane Pumps LLC 1092 E Main St Vernal UT 84078 Timbro Ranch & Cattle Co LLC PO Box 368 Littleton CO 80120 Timbro Ranch & Cattle Company PO Box 368 Littleton CO 80120 Timothy E Knutson Address On File Timothy J Denowh Address On File Timothy J Ritter Address On File Timothy P Taylor Address On File Timothy S Smith And Jeanni Coleman Smith Address On File Titan Energy Services LLC PO Box 1808 Dickinson ND 58601 Titan Machinery Inc 644 East Beaton Dr West Fargo ND 58078 Tjs Oilfield Service 4910 Boulder Dr Bismarck ND 58504 Tnt Well Servicing Inc 3 Gage Road Roundup MT 59072 Todd Slawson Trust Address On File Tokarz Investments LLC 287 Bowman Ave Purchase NY 10577 Tom Gra y Address On File TooLPushers Supply Company PO Box 1714 Casper WY 82602 Torrent Energy Services LLC PO Box 19177 Houston TX 77224-9177 Torrent Energy Services LLC-5984 PO Box 19177 Houston TX 77224-9177 Total Depth Rentals Inc PO Box 1004 Williston ND 58802-1004 Total Depth Well Services Inc Box 479 Whitecourt AB T7S 1P6 Canada Total Directional Svcs LLC PO Box 831 Windsor CO 80550 Total Document Solutions (Tds) 19440 Golf Vista Plaza Ste 220 Leesburg VA 20176

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 41 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 45 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Total Document Solutions, Inc. 12330 E 46Th Avenue Suite 500 Denver CO 80239 Total Document Solutions, Inc. 12330 E. 46Th Avenue, Ste 500 Denver CO 80239 Total Energy Corp 2 Hardscrabble Road North Salem NY 10560 Total Oilfield Rentals PO Box 50646 Casper WY 82605-0646 Total Oilfield Rentals Inc PO Box 50646 Casper WY 82605 Total Oilfield Rentals Inc-4379 PO Box 50646 Casper WY 82605 Total Safety Us Inc PO Box 654171 Dallas TX 75265-4171 Tp2K Holdings LLC 5910 North Central Expressway Suite 1662 Dallas TX 75206 Tpc Resources LLC PO Box 3158 Bismarck ND 58502-3158 Tpc Resources, LLC PO Box 3158 Bismarck ND 58502-3158 Tr Robel Services 300 E 16Th St #216 Greeley CO 80631 Tr Robel Services Inc 300 E 16Th St Unit 216 Greeley CO 80631 Trace3 Inc PO Box 844655 Boston MA 02284-4655 Trace3 LLC PO Box 847467 Los Angeles CA 90084-7469 Tracerco Address On File Tracy Dawn Rude Address On File Trailblazer Pipeline Company LLC 370 Van Gordon Street Attn: Kevin O'Brien Lakewood CO 80228 Trailblazer Pipeline Company LLC Attn: Bill Moler 4200 West 115Th Street Suite 350 Leawood KS 66211 Trailblazer Pipeline Company LLC Attn: Pipeline Management 370 Van Gordon Street Lakewood CO 80228 Trailblazer Pipeline Company LLC Attn: William R. Moler 4200 West 115Th Street Suite 350 Leawood KS 66211 Trailblazer Pipeline Company LLC P.O. Drawer 2360 455 North Poplar Casper WY 82602 Trailblazer Pipeline Company LLC-8543 370 Van Gordon Street Attn: Kevin O'Brien Lakewood CO 80228 Transzap Inc (Oildex)-8626 Dept 3597 Po Box 123597 Dallas TX 75312-3597 Transzap, Inc. 2901 Via Fortuna Building 6 Suite 200 Austin TX 78746 Traxel And Maxine Stevens Trust 4202 Gnarl Austin TX 78731 Trc Rod Services Of Texas Inc 2810 S County Road 1207 Midland TX 79706 Treadstone Environmental Services Llc 14414 41St St Nw Alexander ND 58831 Trenchline Energy Services PO Box 193 Ray ND 58849 Trentroy Corp 13251 58Th Street Nw Williston ND 58801 Trg - The Response Group, LLC 13939 Telge Road Cypress TX 77429 Triangle Electric Inc 2644 1St Ave East Po Box 789 Williston ND 58801 Triangle Electric Inc Attn: David Hoerner 2644 1st Ave E Williston ND 58801 Triangle Realty Partnership PO Box 1923 Williston ND 58802-1923 Triangle Usa Petroleum Corp 1200 17Th St Ste 2500 Denver CO 80202 Triangle Usa Petroleum Corporation Attn: Ashley Garber 1200 17Th Street Suite 2600 Denver CO 80202 717 17Th Triangle Usa Petroleum Corporation C/O Ireland Stapleton Pryor & Pascoe, Pc Attn: Kelley Duke Street #2800 Denver CO 80202 Tridder Industrial LLC PO Box 955 Plains TX 79355 Trident Resource Management Company Inc 15 Engle St Ste 101 Englewood NJ 07631 Trigger Energy Inc 915 Coleman Circle Casper WY 82601 Trigger Land Services Inc 1315 W Jackson Pl Williston ND 58801 Trigger Resources LLC 222 176Th Terrace Dr E Redington Shores FL 33708 Trihydro Corporation 1252 Commerce Drive Laramie WY 82070 Trinity Consultants 1391 N Speer Boulevard Suite 350 Denver CO 80204 Trinity Management Consulting, Inc. 1670 Broadway Suite 2000 Denver CO 80202 Trinity Western Land & Exp LLC 9335 Science Center Drive New Hope MN 55428 Triple C 1903 Pleasant Creek Dr Kingwood TX 77345 Triple C Expl 1903 Pleasant Creek Dr Kingwood TX 77345 Triple O Slabbing, Inc 2830 W. 9Th Ave. Denver CO 80204 Triple S Enterprises Inc PO Box 2238 Williston ND 58802 Tristar Compression LP-8548 PO Box 290038 Kerrville TX 78029 Tristar Compression LP PO Box 290038 Kerrville TX 78029 Tri-State Generation And Transmission Association Inc-8549 P O Box 33695 Denver CO 80233 Tri-State Generation And Transmission Associations, Inc. P O Box 33695 Denver CO 80233 Trotter Construction Inc PO Box 206 Grassy Butte ND 58634 True Oil LLC 455 N Poplar St Casper WY 82601 Trulab LLC 2674 Sims Suite B Dickinson ND 58601 Trust T Trucking Inc PO Box 1503 Sidney MT 59270 Tsc Oil & Gas Inc 4925 Greenville Ave Ste 600 Dallas TX 75206 Tudor Pickering Holt & Co. Attn: Heritage Plaza 1111 Bagby Suite 5100 Houston TX 77002 Tudor Pickering Holt & Co Advisors LP Heritage Plaza 1111 Bagby, Suite 5100 Houston TX 77002 Tuggers Inc 402 2Nd Ave Ne Belfield ND 58622 Tundra Tubing Testing 1900 107Th St Nw Burlington ND 58722 Tveit Farms Inc 13854 Hwy 16 Fairview MT 59221 Twin Cit y PO Box 2323 Bismarck ND 58502-2323 Twin City Technical LLC PO Box 2323 Bismarck ND 58502-2323 Two Bit Rentals Inc PO Box 2537 Williston ND 58802 Txu Electric Company-8551 6555 Sierra Dr Irving TX 75039 Typhoon Excavation Inc PO Box 1451 Williston ND 58802-1451

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 42 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 46 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country U S Petroleum Inc 465 Nassau Rd Roosevelt NY 11575 U.S. Trustee Office of US Trustee Attn: Hector Duran 515 Rusk Avenue Suite 3516 Houston TX 77002 Uet 225 Union Boulevard Suite 200 Lakewood CO 80228 Uet Midstream, LLC 225 Union Boulevard Suite 200 Lakewood CO 80228 Uinta Petroleum Inc PO Box 1208 Laramie WY 82073 Uipath 90 Park Ave 20Th Floor New York NY 10016 Uipath Inc 90 Park Ave 20Th Floor New York NY 10016 Uipath Inc. 90 Park Ave 20Th Floor New York NY 10016 Uipath Inc. 90 Park Ave Fl 20 New York NY 10016-1301 Ulterra Drilling Technologies Lp Po Box 733586 Dallas TX 75373-3586 Uncommon Solutions 6530 S Yosemite St Ste 204 Greenwood Village CO 80111 280 Park Avenue East Tower, 25Th Underwriters At Lloyd'S London & Companies Lloyd'S America, Inc. Attn: Legal Department Floor New York NY 10017 Union Pacific Resource Company PO Box 7, Ms 3504 Fort Worth TX 76101-0007 Unit 3 Tech, LLC 10308 E. 28Th Ave. Denver CO 80238 Unit Drilling Compan y 10233 South Parker Road Suite 300 Parker CO 80134 Unit Drilling Compan y Department 247 Tulsa OK 74182 Unit Drilling Company Attn: David Case 8310 South Valley Hwy Suite 300 Englewood CO 80112 Attn: General United Energy Trading LLC 225 Union Blvd. Suite 200 Counsel Lakewood CO 80228 United Energy Trading LLC 919 South 7Th Street Bismarck ND 58502 United Energy Trading, LLC 225 Union Blvd. Suite 200 Lakewood CO 80228 United Energy Trading, LLC Attn: General Counsel 225 Union Boulevard Suite 200 Lakewood CO 80228 United Quality Cooperative PO Box 340 New Town ND 58763 United Rentals Inc PO Box 100711 Atlanta GA 30384-0711 United States Attorney's Office c/o Southern District of Texas Attn: Richard A. Kincheloe 1000 Louisiana St Suite 2300 Houston TX 77002 United Vision Logistics PO Box 975357 Dallas TX 75397-5357 University Of New Mexico 1155 University Blvd Southeast Albuquerque NM 87131 Unknown Counterparties Upland Exploration Inc 3303 Cypress Creek Pkwy # 145 Houston TX 77068 Ursa Resources Group LLC Attn: Matthew B. Steele 602 Sawyer Street Suite 710 Houston TX 77007 US Attorney's Office Southern District of Texas 1000 Lousiana Suite 2300 Houston TX 77002 Us Energy Development Corp 1521 N Cooper St. Ste 400 Arlington TX 76011 Us Oil & Refining Co 3001 Marshall Ave Tacoma WA 98421 US Trustee Office of US Trustee Attn: Stephen Douglas Statham 515 Rusk Avenue Suite 3516 Houston TX 77002 Us Water Services 12270 43Rd Street Ne St Michael MN 55376 Usa Compression Partners LP P O Box 974206 Dallas TX 75397-4206 Usda Forest Service File No 71652 San Francisco CA 94160-1652 Usda Forest Service PO Box 60000 San Francisco CA 94160-1652 Usg Properties Bakken Ii LLC 601 Travis Street Suite 1900 Houston TX 77002 Utah Department of Environmental Quality PO Box 144810 Salt Lake City UT 84114-4810 Utah Office Of The Attorney General Utah State Capitol Complex 350 North State St Suite 230 Salt Lake City UT 84114 Val L Kuntz Address On File Valentina Exploration LLC C/O Dale Eubank 1676 County Rd 100 Carbondale CO 81623 Valhalla Natural 26400 Kuykendahl Rd Ste C180 301 The Woodlands TX 77375 Valhalla Natural Resources 26400 Kuykendahl Rd Ste C180 301 The Woodlands TX 77375 Valhalla Natural Resources LLC 26400 Kuykendahl Rd Ste C180 301 The Woodlands TX 77375 211 N Robinson Ave Ste 1301 North Valiant Artifical Lift Solutions Llc One Leadership Square Tower Oklahoma City OK 73102 211 N Robinson Ave Ste 1301 North Valiant Solutions-8260 Solutions Llc One Leadership Square Tower Oklahoma City OK 73102 North Tower 211 N Robinson Ave Valiant Artificial List Solutions Solutions Llc One Leadership Square Ste 1301 Oklahoma City OK 73102

150 Greenwich Street 47Th Validus Specialty Insurance On Behalf Of Lloyd'S Syndicate Validus Specialty Underwriting Services, Inc. 4 World Trace Center Floor New York NY 10007 Vallen Distribution Inc P O Box 404753 Atlanta GA 30384-4753 Valor Energy Services LLC PO Box 817 Levelland TX 79336 Van Hook Oil And Gas LLC C/O Raymond Schmidt 10788 68Th St Nw Tioga ND 58852 Varel International Dept 3474 Po Box 123474 Dallas TX 75312-3474

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 43 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 47 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Vastar 1560 Broadway, Suite 2092 Denver CO 80202 Vector Seismic Data Proc Inc 10370 Richmond Ave Houston TX 77042 Vectra Energy Operating I-A LLC Attn: Kevin Heringer 2305 West Berry Avenue Littleton CO 80120 Veeam Payment Solutions 2330 Interstate 30 Mesquite TX 75150 Venoco Inc 370 17Th Street Suite 3900 Denver CO 80202 Verdad Oil & Gas Corporation 5950 Cedar Springs Suite 225 Dallas TX 75235 Verdad Resources 5950 Cedar Springs Rd Ste 200 Dallas TX 75235 Veritas Technologies LLC 2625 Augustine Drive Santa Clara CA 95054 Bankruptcy Administration, 500 Technology Drive, Verizon Wireless Suite 550 Weldon Spring MO 63304 Verris G Magee Address On File Versa Energy LLC 3033 E 1St Ave Ste 305 Denver CO 80206 Veteran Hot Oil Service 520 26Th Ave Nw Sidney MT 59270 Vickery Como LLC 333 Summerville Drive Madison MS 39110 Vicky L Stenehjem Address On File Viersen Oil & Gas Co PO Box 702708 Tulsa OK 74170 View Township Commission Board Vinson & Elkins LLP First City Tower 1001 Fannin Street Suite 2500 Houston TX 77002-6760 Vintage Oil & Gas LLC 4701 Marbella Dr Dallas TX 76126 Violet L Thomas Address On File Virginia Noble Address On File Vision Natural Resources LP PO Box 8105 Midland TX 79708-8105 Vision Service Plan Insurance Co. (Vsp) 3333 Quality Drive Rancho Cordova CA 95670 Vitesse 9200 E Mineral Ave Ste 200 Centennial CO 80112 Vitesse Energ y 9200 E Mineral Ave Ste 200 Centennial CO 80112 Vitesse Energy LLC 9200 E Mineral Ave Ste 200 Centennial CO 80112 Vitesse Energy LLC Vitesse Oil LLC 9200 E Mineral Ave Ste 200 Centennial CO 80112 Vitesse Energy, LLC 9200 E Mineral Ave Ste 200 Centennial CO 80112 Vitesse LLC 9200 E Mineral Ave Ste 200 Centennial CO 80112 Vitesse Oil 9200 E Mineral Ave Ste 200 Centennial CO 80112 Vitesse Oil LLC 9200 E Mineral Ave Ste 200 Centennial CO 80112 Vitesse Oil LLC Vitesse Energy LLC 9200 E Mineral Ave Ste 200 Centennial CO 80112 Vmware, Inc 3401 Hillview Ave Palo Alto CA 94304 Vmware, Inc (Purchased Carbon Black) 3401 Hillview Ave Palo Alto CA 94304 Volesky Holdings LLC 210 4Th St Ne Belfield ND 58622 Volumetrics PO Box 501 Mountain View WY 82939 Vrooman Energy LLC 109 Charleston Blvd Isle Of Palms SC 29451 W Energy Operating LLC 3811 Turtle Creek Blvd Ste 550 Dallas TX 75219 W North Fund 3811 Turtle Creek Blvd Ste 550 Dallas TX 75219 W North Fund Ii LP 3811 Turtle Creek Blvd Ste 550 Dallas TX 75219 W North Fund Iii 3811 Turtle Creek Blvd Ste 550 Dallas TX 75219 W North Fund Iii LP 3811 Turtle Creek Blvd Ste 550 Dallas TX 75219 W R Marshall Ii Address On File Wade B Wold And Dana J Wold Jt Address On File Wade E Casto r 22791 Highway 39 Weldona CO 80653 Wade Works LLC PO Box 84 Buffalo SD 57720 Wallace Family Partnership LP Address On File Wallys Equipment Incorporated 107 S Slaughter Sundown TX 79372 Walter E Johnson J r Address On File Wanda J Taylor Address On File War Consulting, Inc. #587 Rd 2900 Aztec NM 87410 Warco Oil 9101 West Fullerton Ave, Office 1? Franklin Park IL 60131 Ward County c/o Linebarger Goggan Blair & Sampson, LLP Attn: Don Stecker 112 E Pecan Street Suite 220 San Antonio TX 78205 Ward N Adkins Jr Address On File Warren B Stevens Address On File Warren Well Service LLC 3702 Hwy 58 Fairview MT 59221 Wasatch Development Company 595 South Riverwoods Parkway, Suite 400 Logan UT 84321 Waste Management Of Colorado PO Box 78251 Phoenix AZ 85062-8251 Waterlogic 8 Two Mile Road Suite 202 Farmington CT 06032 Watson Well Solutions LLC PO Box 2689 Watford City ND 58854 Waukesha-Pearce Industries Inc PO Box 204116 (Remit To) Aba 121000248 Dallas TX 75320-4116 Waveland Bakken Holdings 1000 Texan Trail Ste 280 Grapevine TX 76051 Waveland Bakken Holdings LLC 1000 Texan Trail Ste 280 Grapevine TX 76051 Waveland Bakken Partners 1000 Texan Trail Ste 280 Grapevine TX 76051 Waveland Bakken Partners I LLC 1000 Texan Trail Ste 280 Grapevine TX 76051 Waveland Bakken Partners LLC 1000 Texan Trail Ste 280 Grapevine TX 76051 Waynes Trucking Inc 10436 31St St Nw Keene ND 58847

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 44 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 48 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Wb Supply LLC PO Box 206620 Dallas TX 75320-6620 Wbi Energy Corrosion Services PO Box 5601 Bismarck ND 58506-5601 Wbi Energy Midstream LLC 1250 West Century Avenue Bismarck ND 58503 Weatherford Laboratories Inc 16161 Table Mountain Pkwy Golden CO 80403 Weatherford Us LP PO Box 301003 Dallas TX 75303-1003 Weatherford Us LP-6185 PO Box 301003 Dallas TX 75303-1003 Weed-Blaste r 611 9Th Ave E Dickinson ND 58601 1111 H Street Weld County Department Of Public Works Attn: Janet Lundquist Po Box 758 Greeley CO 80632 Weld County Public Works Department PO Box 758 Greeley CO 80632 Weld County-8565 PO Box 458 Greeley CO 80632 Welland Company, Inc. PO Box 1486 Coupeville WA 98239-1486 Welldog 1525 Industry Drive Laramie WY 82070 WeLLPro Inc PO Box 2436 Williston ND 58801 Mac A0108- Wells Fargo Bank, National Association Attn: Derivatives Documentation Manager 417 Montgomery Street Suite 500 050 San Francisco CA 94104 Wells Whisper LLC PO Box 1728 Dumas TX 79029 Wellsight Systems Inc. Suite 340 600 Crowfoot Crescent Nw Calgary AB T3G 0B4 Canada Wenck Associates Inc PO Box 249 Maple Plain MN 55359-0249 Wendy Oneil Address On File Wernon Frederickson Address On File Wesco Disposal Inc Dba Abco Recycling 625 W Deer Valley Dr Ste 103-187 Pheonix AZ 85027 West Dakota Water LLC PO Box 912927 Denver CO 80291 West Dakota Water LLC (And River Water LLC) PO Box 912927 Denver CO 80291 West Dakota Water LLC-5696 PO Box 912927 Denver CO 80291 West River Pumps Inc PO Box 1285 Dickinson ND 58601 West Texas Water Well Service 3410 Mankins Ave Odessa TX 79764 Western Area Water Supply Authority Authority Po Box 2343 Williston ND 85502-2343 Western Area Water Supply Authority PO Box 2343 Willison ND Western Area Water Supply Authority (Wawsa) Authority Po Box 2343 Williston ND 85502-2343 Western Area Water Supply Authority-8570 Authority Po Box 2343 Williston ND 85502-2343 Western Area Water Supply-6379 Authority Po Box 2343 Williston ND 85502-2343 Western Chemical LLC PO Box 1327 Roosevelt UT 84066 Western Exploration LLC PO Box 17 Littleton CO 80160-0017 Western States Fire Protection 7026 S Tucson Way Centennial CO 80112 Western States Reclamation Inc 3756 Imperial St Frederick CO 80516 Westerngeco L.L.C. 10001 Richmond Avenue Houston TX 77042 WesternGeco LLC c/o Gieger, Laborde & Laperouse, LLC Attn: Andrew A. Braun 701 Poydras Street Suite 4800 New Orleans LA 70139-4800 Weston 1435 Garrison Street Suite 100 Lakewood CO 80215 Weston Solutions Inc-4350 PO Box 536121 Pittsburgh PA 15253-5903 Wfc Investments LLC PO Box 460 Greenville MI 48838 Wham LLC 1903 W Main, Ste #2A Newcastle WY 82701 3303 Northfield White Family Trust Uwo Jimmy R White Marsha B White - Trustee Dr Midland TX 79707 White Mountain Operating LLC PO Box 2353 Pinedale WY 82941-2353 White Rock Oil & Gas, LLC P O Box 612184 Dallas TX 75261-0601 White Wing Limited LLC 1627 W University Parkway Sarasota FL 34243 Whitestar 777 South Wadsworth Blvd. Suite 4-250 Lakewood CO 80226 Whitestar Corp 777 South Wadsworth Blvd Suite 4-250 Lakewood CO 80226 Whiting Oil & Gas Corp. 1700 Lincoln Street Suite 4700 Denver CO 80203 Whiting Oil & Gas Corporation 1700 Lincoln Street Suite 4700 Denver CO 80203 Whiting Oil And Gas 1700 Lincoln Street Suite 4700 Denver CO 80203 Whiting Oil And Gas Cor 1700 Lincoln Street Suite 4700 Denver CO 80203 Whiting Oil And Gas Corp 1700 Lincoln Street Suite 4700 Denver CO 80203 Whiting Oil And Gas Corporation 1700 Lincoln Street Suite 4700 Denver CO 80203 Whiting Resources Corportion 1700 Lincoln Street Suite 4700 Denver CO 80203 1100 North Whiting Usa Trust Ii Attn: Corporate Trust Administration C/O Wilmington Trust, National Association Rodney Square North Market Street Wilmington DE 19890 C/O The Bank Of New York Mellon Trust Whiting Usa Trust Ii Attn: Michael J. Ulrich Company, N.A. 919 Congress Avenue Suite 500 Austin TX 78701 1100 North Whiting/Whiting Usa Trust Ii Attn: Corporate Trust Administration C/O Wilmington Trust, National Association Rodney Square North Market Street Wilmington DE 19890 Whitney Ligon Address On File Wilbanks Reserve Corporation 450 East 17Th Ave Suite 220 Suite 200 Denver CO 80203 Wild Basin Oil & Gas LLC PO Box 326 Allenspark CO 80510 Wild Basin Oil And Gas, LLC PO Box 326 Allenspark CO 80510 Wild Well Control Inc PO Box 919264 Dallas TX 75391-9264 Wildbore Natural Resources LLC 18903 Heritage Farmstead Lane Cypress TX 77433 Wildcat Trucking LLC PO Box 1389 Sidney MT 59270

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 45 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 49 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country William C & Benita M Buster Address On File William Douglas Fernandes Address On File William Douglas Fernandes Jr Address On File William Everett Address On File William H Smith And Address On File William J Lueking Address On File William Krell Address On File William Lueking Address On File William Michael Mcgann Jr Address On File William R Everett Address On File William R Everett Address On File William Reagin Parnell Address On File William W & Anne H Griffith Address On File Williams County Commission Board 205 East Broadway Williston ND 58801 Williams Production Rmt 1515 Arapahoe St. Tower Denver CO 80202 Williams, Turner & Holmes, P.C. Courthouse Place Building 200 N. 6Th Street Po Box 338 Grand Junction CO 81502-0338 Williston Basin Energy LLC 919 S 7Th St #405 Bismarck ND 58504 Williston Basin Energy, LLC 919 S 7Th St #405 Bismarck ND 58504 Williston Basin Interstate Pipeline Company-8575 400 N 4Th St Bismark ND 58501 Williston Industrial Supply 1020 42Nd St E Williston ND 58801 Willys Hydrotest Service LLC 1012 1St St Sw Dickinson ND 58601

Attn: Corporate Trust Wilmington Trust, National Association Rodney Square North 1100 North Market Street Administration Wilmington DE 19890-1615 Wilson Geophysical, Inc. 12 Hickory Circle Malakoff TX 75148 Wind River Petroleum LP 5150 Tamiami Trl N Ste 206 Naples FL 34103 Windsor Dakota LLC Windstream Enterprise 1720 Galleria Blvd Charlotte NC 28270 Winn Exploration Co, Inc 800 N Shoreline Blvd Ste 1900N Corpus Christi TX 78401 Winn-Marion-Barber LLC 7084 South Revere Pkwy Unit A Centennial CO 80112 Winston Revocable Trust Hs Winston - Trustee Po Box 101235 Fort Worth TX 76185 Winterhawk Production Company C/O Kristen Kelley Po Box 2042 Fraser CO 80442 Winton Dale And Vicki Wold Address On File Wise Services Inc PO Box 427 Lyman WY 82937

Wm Nd Energy Resources LLC Attn Mr Greg Nikkel 1001 Fannin Street Suite 4000 Houston TX 77002 Wolf Energy LLC PO Box 597 Bismarck ND 58502 Wolfe Exploration LLC 5850 Lariat Loop Bismarck ND 58503 Wolla Oilfield Services LLC 14672 Highway 2 Williston ND 58801 Wolla Trucking LLC 14672 Highway 2 Williston ND 58801 Wolters Kluwer Address On File Wood Group Psn 17325 Park Row Houston TX 77084 Wood Group Psn Inc PO Box 301415 Dallas TX 75303-1415 Wood Group Usa Inc - Cmo PO Box 733325 Dallas TX 75373-3325 Wood Group Usa Inc - Cmo (Previously Mitchells Oil Field Serv Inc) PO Box 733325 Dallas TX 75373-3325 Woodard & Walker LLC 415 Main Street Minden LA 71055 Workday PO Box 396106 San Francisco CA 94139-6106 Workover Solutions Inc 5535 Brystone Dr Houston TX 77041 Workshare Technology Inc. 650 California Street Floor 7 San Francisco CA 94108 Wtg Fuels Inc PO Box 3514 211 W Colorado Midland TX 79702 Wyoming Casing Service Inc PO Box 1153 Dickinson ND 58602 Wyoming Department of Environmental Quality 200 W 17th Street Cheyenne WY 82002 Wyoming Office Of The Attorney General Kendrick Building 2320 Capitol Ave Cheyenne WY 82002 Wyoming State Lands 122 West 25Th Street Cheyenne WY 82002-0600 Xcel Energy-8578 414 Nicollet Mall Minneapolis MN 55401 Xcel Seismic, Inc. 2218 Windmill Drive Richmond TX 77469 Xerox Corporation PO Box 660501 Dallas TX 75266-0501 Xh LLC 810 Houston St Fort Worth TX 76102 X-Site Energy Services LLC. 497 116Th Ave Sw Killdeer ND 58640 Xto Energy Inc PO Box 840780 Dallas TX 75284-0780 Xto Energy Inc. PO Box 840780 Dallas TX 75284-0780 XTO Energy Inc. & ExxonMobil Corporation c/o Forshey & Prostok LLP Attn: J. Robert Forshey and Lynda L. Lankford 777 Main Street Suite 1290 Fort Worth TX 76102 Xto Energy, Inc PO Box 840780 Dallas TX 75284-0780 Xto Holdings LLC PO Box 840780 Dallas TX 75284-0780 Xto Holdings, LLC P O Box 840780 Dallas TX 75284-0780 Ystaas Electrical Service LLC PO Box 1155 Dickinson ND 58602 Zachary Wahlstrom Address On File

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 46 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 50 of 70

Exhibit A Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Zavanna 1200 17Th Street Suite 1100 Denver CO 80202 Zavanna LLC 1200 - 17Th Street Suite 1100 Denver CO 80202 Zavanna LLC 1200 - 17Th Street Suite 2850 Denver CO 80202 Zavanna, LLC 1200 - 17Th Street Suite 2850 Denver CO 80202 Zavanna, LLC 1200 17Th St, Ste 1100 Denver CO 80202 Zavanna, LLC Attn: Ryan T. Kackley 1200 17Th St Suite 1100 Denver CO 80202 Zavanna, LLC & Zavanna Orr, LLC c/o Steptoe & Johnson PLLC Attn: Arthur M. Standish 1780 Hughes Landing Blvd Suite 750 The Woodlands TX 77380 Zoom Video Communications, Inc. 55 Almaden Blvd 6Th Floor San Jose CA

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 47 of 47 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 51 of 70

Exhibit B

Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 52 of 70

Exhibit B Served Via Electronic Mail

Name Attention Address 1 Email Alabama Department of Environmental Management [email protected] Andrews Independent School District, Anderws County Tax Office, Balmorhea Independent School District, Gaines County Appraisal District, Howard County Tax Office, Kermit Independent School District, and Yoakum County Tax Office c/o Perdue, Brandon, Fielder, Collins & Mott, LLP Attn: Laura J. Monroe [email protected] Aransas County, Dewitt County and Nueces County c/o Linebarger Goggan Blair & Samspon, LLP Attn: Diane W. Sanders [email protected] Archrock Partners Operating LLC c/o Anderson Lehrman Barre & Maraist, LLP Attn: Kevin M. Maraist [email protected] Archrock Partners Operating LLC c/o Anderson, Lehrman, Barre & Maraist, LLP Attn: Kevin M. Maraist [email protected] Atlas Oil Company Attn: John E. Ortoleva, Jr. [email protected] Atlas Oil Company Attn: Joseph E. Rivera [email protected] Attn: Michael D. Warner & [email protected] Atlas Oil Company c/o Cole Schotz P.C. Benjamin L. Wallen [email protected] AuditBoard, Inc. c/o Fox Rothschild LLP Attn: Martha B. Chovanes [email protected] Attn: Henry Flores & Kenneth M. [email protected] Balanced Energy Oilfield Services USA Inc. c/o Rapp & Krock, PC Krock [email protected] Attn: Glenn E. Siegel and [email protected] Bank of New York Mellon Trust Company, N.A. c/o Morgan, Lewis & Bockius LLP Nakisha Duncan [email protected] Bank of New York Mellon Trust Company, N.A. c/o Morgan, Lewis & Bockius LLP Attn: Rachel J. Mauceri [email protected] Bank of New York Mellon Trust Company, N.A. c/o Morgan, Lewis, & Bockius LLP Attn: Winstol D. Carter, Jr. [email protected] BCSP Denver Property LLC c/o Goulston & Storrs PC Attn: Trevor R. Hoffmann [email protected] BCSP Denver Property LLC c/o Goulston & Storrs PC [email protected] [email protected] Attn: Keith M. Aurzada, Michael [email protected] Big Horn Rural Electric Company c/o Reed Smith LLP P. Cooley, & Lindsey L. Robin [email protected] BNN Redtail, LLC Attn: Mark Ritchie [email protected] BNN Western, LLC Attn: Matt Sheehy [email protected] BNN Western, LLC c/o Sidley Austin LLP Attn: David Kronenberg, Esq. [email protected] BNN Western, LLC, BNN North Dakota, LLC, Tallgrass Midstream, LLC, Trailblazer Pipeline Company LLC, Buckhorn SWD Solutions, LLC and Buckhorn Energy c/o Sidley Austin LLP Attn: Hannah Rozow Owolabi [email protected] BP America Production Company c/o Liskow and Lewis [email protected] Brazoria County Tax Office c/o Perdue, Brandon, Fielder, Collins & Mott, LLP Attn: Owen M. Sonik [email protected] Attn: Alfredo R. Perez and [email protected] Caliber North Dakota LLC c/o Weil, Gotshal Manges LLP Brenda Funk [email protected] CGGVeritas Land (U.S) Inc. c/o Adams and Reese LLP Attn: Scott R. Cheatham [email protected] Chemoil Corporation Attn: Chad O'Neil [email protected] [email protected] Attn: Edward L. Ripley, Lisa M. [email protected] Chevron U.S.A. Inc. c/o Andrews Myers, P.C. Norman and Patrick A. Kelly [email protected] Chevron USA Inc Attn: Michael K. Wirth [email protected] Chrysalis MSP, LLC c/o Wells & Cuellar, P.C. Attn: James E. Cuellar [email protected] Attn: Robert P. Franke & Andrew [email protected] Dorchester Minerals, L.P. c/o Clark Hill Strasburger G. Edson [email protected] Eighty-Eight Oil LLC, an Affiliate of True Oil Company c/o Snow Spence Green LLP Attn: Kenneth P Green [email protected] EJS Investment Holdings, LLC c/o McDowell Hetherington LLP Attn: Jarrod B. Martin [email protected] In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 1 of 3 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 53 of 70

Exhibit B Served Via Electronic Mail

Name Attention Address 1 Email Element Fleet Corporation c/o Saul Ewing Arnstein & Lehr LLP Attn: John D. Demmy [email protected] Energy Eleven, L.P. c/o Whitaker Chalk Swindle & Schwartz PLLC Attn: Robert A. Simon [email protected] Equinor Energy LP c/o Kean Miller LLP Attn: J. Eric Lockridge [email protected] Garth L. Harmon, Wagner Harmon and Shotgun Creek Developments, LLC c/o Jones, Gillaspia & Loyd LLP Attn: John Bruster "Bruse" Loyd [email protected] G-Style Transport, LLC; GST Casing, LLC; and All In Oil Field Services; LLC c/o Shapiro Bieging Barber Otteson LLP Attn: John C. Leininger [email protected] Halliburton Energy Services Inc Attn: Jeff Miller [email protected] [email protected] Attn: Keith M. Aurzada, Michael [email protected] High West Energy Inc. c/o Reed Smith LLP P. Cooley, & Lindsey L. Robin [email protected] Hiland Partners Holdings LLC c/o Law Office of Patricia Williams Prewitt Attn: Patricia Williams Prewitt [email protected] Attn: Mark E. Andrews & Patrick [email protected] Hunt Oil Company c/o Dykema Gossett PLLC Huffstickler [email protected] Hunt Oil Company c/o Dykema Gossett PLLC Attn: Patrick Huffstickler [email protected] Jackson Walker LLP Attn: Kendra Gradney [email protected] Jamex Marketing, LLC Attn: James Ballengee [email protected] Jamex Marketing, LLC c/o Forshey & Prostok, LLP Attn: Jeff P. Prostok [email protected] [email protected] Attn: Joel W. Reese, Pete [email protected] Marketos, Leslie Chaggaris, & [email protected] Jamex Marketing, LLC c/o Reese Marketos LLP Tyler J. Bexley [email protected] Jasper County, Montgomery County, Harris County, Angelina County c/o Linebarger Goggan Blair & Sampson, LLP Attn: Tara L. Grundemeier [email protected] JMAC Resources Inc Attn: Darla Miller [email protected] JMAC Resources, Inc. Attn: Jon McCreary [email protected] J-W Power Company c/o Miller Mentzer Walker, P.C. Attn: Julie A. Walker [email protected] Kansas Department of Health and Environment [email protected] Karen Severtsen c/o Turman & Lang, Ltd. Attn: Katrina A. Truman Lang [email protected] Key Energy Services LLC Attn: J. Marshall Dodson [email protected] Kinder Morgan Treating LP c/o Law Office of Patricia Williams Prewitt Attn: Patricia Williams Prewitt [email protected] Lana Conklin and Crystal Henzi, as Trustees of the Ruth Attn: Jay M. Ross & Monique D. [email protected] Parker Wood Revocable Trust dated July 27, 1994 c/o Hopkins & Carley Jewett-Brewster [email protected] LPG Capital Partners, LP c/o Letendre Group Attn: Benoit M. Letendre [email protected] Attn: Clay M. Taylor & Bryan C. [email protected] Marathon Oil Company c/o Ellis Eppich Schafer Jones LLP Assink [email protected] Attn: Carl D. Neff & Kasey H. [email protected] McKenzie Electric Cooperative, Inc. c/o Fox Rothschild LLP DeSantis [email protected] McKenzie Electric Cooperative, Inc. c/o Fox Rothschild LLP Attn: David Grant Cooks [email protected] McKenzie Energy Partners, Globe Energy Services, Inc., Attn: Maria Bartlett & Zachary S. [email protected] and Globe Chemical LLC dba Tech Management c/o Doré Rothberg McKay, PC McKay [email protected] Michigan Department of Environment, Great Lakes, and Energy [email protected] Montana Department of Revenue Attn: Teresa G. Whitney [email protected] Montana Department of Revenue c/o Husch Blackwell LLP Attn: Lynn H. Butler [email protected] In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 2 of 3 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 54 of 70

Exhibit B Served Via Electronic Mail

Name Attention Address 1 Email Mountrail-Williams Electric Cooperative c/o Vogel Law Firm Attn: Jon R. Brakke [email protected] National Oilwell Varco LP Attn: Jose Bayardo [email protected] Nebraska Department of Environment and Energy [email protected] North Dakota Department of Environmental Quality Attn: L. Dave Glatt, PE [email protected] Attn: Steven M. Johnson & Grant [email protected] Northern Oilfield Services, LLC c/o Church, Harris, Johnson & Williams Kelly [email protected] Office of the U.S. Trustee Attn: Stephen Douglas Statham [email protected] Attn: Jason S. Brookner & Paul [email protected] Official Committee of Unsecured Creditors c/o Gray Reed & McGraw LLP D. Moak [email protected] Official Committee of Unsecured Creditors c/o Gray Reed & McGraw LLP Attn: Lydia R. Webb [email protected] Attn: Jeffrey N. Pomerantz & [email protected] Official Committee of Unsecured Creditors c/o Pachulski Stang Ziehl & Jones LLP Shirley S. Cho [email protected] Attn: Robert J. Feinstein & [email protected] Official Committee of Unsecured Creditors c/o Pachulski Stang Ziehl & Jones LLP Steven W. Golden [email protected] Oracle America, Inc. c/o Buchalter, a Professional Corporation Attn: Shawn M. Christianson [email protected] Ovintiv Production Inc. f/k/a Newfield Production Company c/o Thompson & Knight LLP Attn: Steven J. Levitt [email protected] Attn: Tye C. Hancock & Anythony [email protected] Ovintiv Production Inc. f/k/a Newfield Production Company c/o Thompson & Knight LLP F. Pirraglia [email protected] Pioneer Drilling Services Ltd Attn: Stacy Locke [email protected] Plains Marketing, L.P. c/o Law Office of Patricia Williams Prewitt Attn: Patricia Williams Prewitt [email protected] Polar Midstream, LLC Attn: Brock M. Degeyter [email protected] Attn: John E. Mitchell and Yelena [email protected] Polar Midstream, LLC c/o Akerman LLP Archiyan [email protected] Attn: Jason B. Binford & Abigail [email protected] Railroad Commission of Texas c/o Office of the Attorney General of Texas Ryan [email protected] Reeves County Tax District c/o McCreary, Veselka, Bragg & Allen, PC Attn: Tara LeDay [email protected] Regions Bank c/o Kane Russell Coleman Logan PC Attn: Joseph M. Coleman [email protected] Securities and Exchange Commission Attn: Jolene M. Wise [email protected] Sentry Crane Services Attn: Michael Waliezer [email protected] [email protected] Attn: Andrew N. Rosenberg, Alice [email protected] Belisle Eaton, Michael M. Turkel [email protected] The Ad Hoc Committee of Noteholders c/o Paul, Weiss, Rifkind, Wharton & Garrison LLP & Omid Rahnama [email protected] Attn: John F. Higgins, Eric M. [email protected] English and Genevieve M. [email protected] The Ad Hoc Committee of Noteholders c/o Porter Hedges LLP Graham [email protected] The Bank of New York Mellon Trust Company, N.A. Attn: Jennifer J. Provenzano [email protected] U.S. Trustee Office of US Trustee Attn: Hector Duran [email protected] Unit Drilling Company Attn: David Case [email protected] United States Attorney's Office c/o Southern District of Texas Attn: Richard A. Kincheloe [email protected] US Trustee Office of US Trustee Attn: Stephen Douglas Statham [email protected] WesternGeco LLC c/o Gieger, Laborde & Laperouse, LLC Attn: Andrew A. Braun [email protected] Attn: J. Robert Forshey and [email protected] XTO Energy Inc. & ExxonMobil Corporation c/o Forshey & Prostok LLP Lynda L. Lankford [email protected]

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 3 of 3 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 55 of 70

Exhibit C

Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 56 of 70

Exhibit C Served Via Overnight Mail

Name Attention Address 1 Address 2 City State Zip Country AL Office Of The Attorney General 501 Washington Ave Montgomery AL 36104 Alabama DEM Attn: Legal PO Box 301463 Montgomery AL 36130-1463 Andrews Balmborehea Kermit Indp SD L.Monroe-PerdueBrandonFielderCollinsMott PO Box 817 Lubbock TX 79408 AR Office Of The Attorney General 323 Center St Ste 200 Little Rock AR 72201 Aransas Dewitt and Nueces County D.Sanders -LinebargerGogganBlair&Samspon PO Box 17428 Austin TX 78760-7428 Archrock Partners Operating LLC c/o Anderson Lehrman Barre Maraist Gaslight Square 1001 3rd St Suite 1 Attn: Kevin M. Maraist Corpus Christi TX 78404 Archrock Partners Operating LLC co Anderson Lehrman Barre & Maraist 1001 Third Street Ste 1 Gaslight Sq Attn: Kevin M. Maraist Corpus Christi TX 78404 Arkansas DEE Division of Environmental Quality 5301 Northshore Drive North Little Rock AR 72118-5317 Atlas Oil Company Attn: John E. Ortoleva Jr. 24501 Ecorse Rd. Taylor MI 48180 Atlas Oil Company Attn: Joseph E. Rivera 24501 Ecorse Rd Taylor MI 48180 Atlas Oil Company c/o Cole Schotz P.C. 301 Commerce Street Suite 1700 Attn Michael Warner Benjamin Wallen Fort Worth TX 76102 AuditBoard Inc. c/o Fox Rothschild LLP 2000 Market Street 20th Floor Attn: Martha B. Chovanes Philadelphia PA 19103-3222 Balanced Energy Oilfield Services c/o Rapp & Krock PC 1980 Post Oak Blvd Suite 1200 Attn: Henry Flores & Kenneth Krock Houston TX 77056 Bank of New York Mellon Trust Co Glenn Siegel and Nakisha Duncan 101 Park Avenue Morgan Lewis & Bockius LLP New York NY 10178-0600 Bank of New York Mellon Trust Co R. Mauceri - Morgan Lewis & Bockius 1701 Market Street Philadelphia PA 19103 Bank of New York Mellon Trust Co Winstol CarterJr-MorganLewisBockius 1000 Louisiana Street Suite 4000 Houston TX 77002 BC Ministry Climate Change Attn: Officer or Director PO Box 9360 Stn Prov Govt Victoria BC V8W 9M2 Canada BCSP Denver Property LLC D. Rosner - Goulston & Storrs PC 400 Atlantic Avenue Boston MA 02110-3333 BCSP Denver Property LLC Trevor Hoffman - Goulston & Storrs 885 Third Avenue 18th Floor New York NY 10022 Big Horn Rural Electric Company c/o Reed Smith LLP 2501 N Harwood Suite 1700 Attn: Aurzada Cooley & Robin Dallas TX 75201 Black Hawk Energy Services Ltd Attn: Mike Davis 118 84th St. Williston ND 58801 BNN Redtail LLC Attn: Mark Ritchie 370 Van Gordon St Lakewood CO 80228 BNN Western LLC Attn: David Kronenberg Esq. 1501 K Street NW Suite 600 c/o Sidley Austin LLP Washington DC 20005 BNN Western LLC Attn: Matt Sheehy 370 Van Gordon Street Lakewood CO 80228 BNN Western LLC c/o Sidley Austin LLP 1000 Louisiana St. Suite 5900 Attn: Hannah Rozow Owolabi Houston TX 77002 BP America Production Company M. Rubenstein - Liskow and Lewis 1001 Fannin Street Suite 1800 Houston TX 77002 Brazoria County Tax Office Attn: Owen M. Sonik 1235 North Loop West Suite 600 Perdue Brandon Fielder Collin Mott Houston TX 77008 CA Office Of The Attorney General Attn: Legal PO Box 944255 Sacramento CA 94244-2550 Caliber North Dakota LLC c/o Weil Gotshal Manges LLP 700 Louisiana Street Suite 1700 Attn: Alfredo R. Perez Brenda Funk Houston TX 77002 California EPA 1001 I Street PO Box 2815 Sacramento CA 95814 CGGVeritas Land (U.S.) Inc. c/o Adams and Reese LLP 701 Poydras Street Attn: Scott R. Cheatham New Orleans LA 70139 Chemoil Corporation Attn: Chad O'Neil 40 E. Sheridan Avenue Suite 400 Oklahoma City OK 73104 Chevron U.S.A. Inc. c/o Andrews Myers 1885 St. James Place 15th Floor E. Ripley L. Norman and P. Kelly Houston TX 75506 Chevron USA Inc Attn: Michael K. Wirth 6001 Bollinger Canyon Road San Ramon CA 94583 Chrysalis MSP LLC c/o Wells & Cuellar PC 440 Louisiana Attn: James E. Cuellar Houston TX 77002 CO Office Of The Attorney General 1300 Broadway 10Th Fl Ralph L. Carr Judicial Building Denver CO 80203 Colorado DPHE 4300 Cherry Creek Drive S Denver CO 80246 Commitee of Unsecured Creditors c/o Pachulski Stang Ziehl Jones LLP 10100 Santa Monica Blvd 13th Floor Attn: Jeffrey Pomerantz Shirley Cho Los Angeles CA 90067 Committee of Unsecured Creditors c/o Gray Reed & McGraw LLP 1300 Post Oak Blvd Suite 2000 Attn: Jason Brookner & Paul Moak Houston TX 77056 Committee of Unsecured Creditors c/o Gray Reede & McGraw LLP 1601 Elm Street Suite 4600 Attn: Lydia R. Webb Dallas TX 75201 Committee of Unsecured Creditors c/o Pachulski Stang Ziehl Jones LLP 780 Third Avenue 34th Floor Attn: R. Feinstein & S. Golden New York NY 10017 CS Welding LLC Attn: Cesar Salgado 1101 4th St SE Suite 206 Stanley ND 58784 CTAP LLC Attn: Seth Merrill 2585 Trailridge Dr East Lafayette CO 80026 Delaware Department Of Justice 820 N French Street Carvel State Office Building Wilmington DE 19801 Delaware DNREC 89 Kings Highway The Richardson & Robbins Building Dover DE 19901 Dorchester Minerals L.P. c/o Clark Hill Strasburger 901 Main Street Suite 6000 Attn: Robert Franke & Andrew Edson Dallas TX 75202-3794 Eighty-Eight Oil LLC c/o Snow Spence Green LLP 2929 Allen Parkway Suite 2800 Attn: Kenneth P Green Houston TX 77019 EJS Investment Holdings LLC c/o Chamberlain Hrdlicka 1200 Smith Street Suite 1400 Attn: Jarrod B. Martin Houston TX 77002 Element Fleet Corporation John Demmy - SaulEwingArnsteinLehr 1201 N Market Street Suite 2300 Wilmington DE 19899 Energy Eleven LP c/o Whitaker Chalk Swindle Schwartz 301 Commerce Street Suite 3500 Attn: Robert A. Simon Fort Worth TX 76102 Equinor Energy LP c/o Kean Miller LLP 400 Conventn St Ste 700 Attn: J. Eric Lockridge Baton Rouge LA 70802 Estvold Oilfield Services Inc Attn: Jake Estvold 3962 84th Ave NW New Town ND 58763 Garth L. Harmon LLC c/o Jones Gillaspia & Loyd LLP 4400 Post Oak Parkway Suite 2360 Attn: John Bruster "Bruse" Loyd Houston TX 77027 G-Style c/o Shapiro Bieging Barber Otteson 5430 Lyndon B Johnson Fwy Ste 1540 Attn: John C. Leininger Dallas TX 75240

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 1 of 3 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 57 of 70

Exhibit C Served Via Overnight Mail

Name Attention Address 1 Address 2 City State Zip Country Halliburton Energy Services Inc Attn: Jeff Miller 3000 N. Sam Houston Pkwy E. Houston TX 77032 High West Energy Inc. c/o Reed Smith LLP 2501 N Harwood Suite 1700 Attn: Aurzada Cooley & Robin Dallas TX 75201 Hiland Partners Holdings LLC c/o Law Office P. Williams Prewitt 10953 Vista Lake Court Attn: Patricia Williams Prewitt Navasota TX 77868 Hunt Oil Company c/o Dykema Gossett PLLC 112 E. Pecan Street Suite 1800 Attn: Patrick Huffstickler San Antonio TX 78205 Hunt Oil Company c/o Dykema Gossett PLLC 1717 Main Street Suite 4200 Attn: Mark Andrews & P Huffstickler Dallas TX 75201 Internal Revenue Service Department of Treasury Ogden UT 84201-0045 Internal Revenue Service Attn: Centralized Insolvency Op 2970 Market St. Philadelphia PA 19104-5016 Internal Revenue Service Attn: Centralized Insolvency Op PO Box 7346 Philadelphia PA 19101-7346 Internal Revenue Service Houston Division 1919 Smith Street Houston TX 77002 Jackson Walker LLP Attn: Kendra Gradney 100 Congress Avenue Suite 1100 Austin TX 78701 Jamex Marketing LLC Attn: James Ballengee 5151 Beltline Rd. Suite 715 Dallas TX 75254 Jamex Marketing LLC c/o Forshey & Prostok LLP 777 Main Street Suite 1290 Attn: Jeff P. Prostok Fort Worth TX 76102 Jamex Marketing LLC c/o Reese Marketos LLP 750 N Saint Paul St Suite 600 AttnReese Marketos Chaggaris Bexley Dallas TX 75201-3201 Jasper Mont Angelina Harris County Tara L. Grundemeier PO Box 3064 Houston TX 77253-3064 JMAC Resources Inc Attn: Darla Miller 121 48th Ave SW Williston ND 58801 JMAC Resources Inc. Attn: Jon McCreary 1505 N. Miller St. Suite 260 Wenatchee WA 98801 Jpmorgan Chase Bank N.A. Attn: Ryan Fuessel 1125 17th Street Floor 3 Denver CO 80802 JPMorgan Chase Bank N.A. Cindy Chin Client Service Assc PO Box 182051 Columbus OH 43218-2051 JPMorgan Chase Bank N.A. Genny Garciga Client Service Assc PO Box 182051 Attn: E. Stuart Phillips Columbus OH 43218-2051 J-W Power Company c/o Miller Mentzer Walker PC 100 N. Main St. PO Box 130 Attn: Julie A. Walker Palmer TX 75152 Kansas DHE 1000 SW Jackson St Curtis State Office Building Topeka KS 66612 Karen Severtsen Katrina Lang c/o Truman & Lang Ltd. 505 N Broadway Suite 207 Fargo ND 58107-0110 Key Energy Services LLC Attn: J. Marshall Dodson 1301 McKinney St Suite 1800 Houston TX 77010 Kinder Morgan Treating LP c/o Law Office P. Williams Prewitt 10953 Vista Lake Court Attn: Patricia Williams Prewitt Navasota TX 77868 KS Office Of The Attorney General 120 Sw 10Th Ave 2nd Flr Topeka KS 66612 LA Dept of Office of Mineral Rescrs Attn: Ryan M. Seidemann PO Box 94005 Baton Rouge LA 70804-9005 LA Office Of The Attorney General 1885 N. Third St Baton Rouge LA 70802 Lana Conklin & Crystal Henzi c/o Hopkins & Carley 70 S First Street Attn: J. Ross & M. Jewett-Brewster San Jose CA 95113-2406 Louisiana DEQ 602 North Fifth Street Baton Rouge LA 70802 LPG Capital Partners LP c/o Letendre Group 123 Second Street PO Box 92 Attn: Benoit M. Letendre Baraboo WI 53913 Marathon Oil Company c/o Ellis Eppich Schafer Jones LLP 420 Throckmorton Street Suite 1000 Attn Clay M Taylor & Bryan C Assink Fort Worth TX 76102 McKenzie Electric Cooperatice Inc. Neff & DeSantis Fox Rothschild LLP 919 North Market Street Suite 300 Citizens Bank Center Wilmington DE 19801 McKenzie Electric Cooperative Inc. David Cooks c/o Fox Rothschild LLP 5420 Lyndon B. Johnson Freeway Two Lincoln Centre Suite 1200 Dallas TX 75240-6215 McKenzie Energy Globe Energy Svcs Doré Rothberg McKay P.C. 17171 Park Row Suite 160 Attn Maria Bartlett & Zachary McKay Houston TX 77084 McKenzie Energy Partners LLC Attn: Thomas McKenzie PO Box 1037 Watford City ND 58854 MI Department Of Attorney General 525 W Ottawa St G. Mennen Williams Building 7Th Flr Lansing MI 48933 Michigan EGLE 525 West Allegan PO Box 30473 Lansing MI 48909 Mississippi DEQ Attn: Legal PO Box 2261 Jackson MS 39225 MN Office Of The Attorney Genereal 215 N. Sanders Justice Building Third Fl Helena MT 59601 Montana Department of Revenue Attn: Teresa G. Whitney 125 N Roberts Street PO Box 7701 Legal Services Office Helena MT 59604-7701 Montana Department of Revenue c/o Husch Blackwell LLP 111 Congress Avenue Suite 1400 Attn: Lynn H. Butler Austin TX 78701 Montana DEQ Attn: Legal PO Box 200901 Helena MT 59620-0901 Mountrail-Williams Electric Co-op c/o Vogel Law Firm 218 NP Avenue Attn: Jon R. Brakke Fargo ND 58107-1389 MS Office Of The Attorney General 550 High St Ste 1200 Walter Sillers Building Jackson MS 39201 National Oilwell Varco LP Attn: Jose Bayardo 7909 Parkwood Circle Drive Houston TX 77036 ND Office Of The Attorney Genereal State Capitol 600 E Boulevard Ave Dept. 125 Bismarck ND 58505 NE Office Of The Attorney General 2115 State Capitol Lincoln NE 68509 Nebraska DEE 1200 N Street Suite 400 PO Box 98922 Lincoln NE 68509-8922 New Mexico Environment Department Attn: Legal PO Box 5469 Santa Fe NM 87502-5469 NexTier Completion Solutions Inc. Attn: Robert Drummond 3990 Rogerdale Houston TX 77042 NM Office Of The Attorney General 408 Galisteo Street Villagra Building Santa Fe NM 87501 North Dakota DEQ Attn: L. Dave Glatt 918 E Divide Ave 4th Floor Bismarck ND 58501 Northern Oilfield Services LLC Attn: Sheldon Van Vost 1637 44th St W Williston ND 58801 Northern Oilfield Services LLC co Church Harris Johnson & Williams 114 Third Street South PO Box 1645 Attn: Steven M. Johnson & G. Kelly Great Falls MT 59403-1645

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 2 of 3 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 58 of 70

Exhibit C Served Via Overnight Mail

Name Attention Address 1 Address 2 City State Zip Country Office of the U.S. Trustee Attn: Stephen Douglas Statham 515 Rusk Street Suite 3516 Houston TX 77056 OK Office Of The Attorney General 313 Ne 21St St Oklahoma City OK 73105 Oklahoma DEQ Attn: Legal PO Box 1677 Oklahoma City OK 73101-1677 Oracle America Inc. c/o Buchalter a Professional Corp 55 Second Street 17th Floor Attn: Shawn M. Christianson San Francisco CA 94105-3493 Ovintiv Production Inc. c/o Thompson & Knight LLP 1 Arts Plaza 1722 Routh St Ste 1500 Attn: Steven J. Levitt Dallas TX 75201 Ovintiv Production Inc. c/o Thompson & Knight LLP 811 Main Street Suite 2500 Tye Hancock & Anthony Pirraglia Houston TX 77002 Patterson UTI Drilling Co LP Attn: William A. Hendricks Jr. 10713 West Sam Houston Parkway N. Suite 800 Houston TX 77064 Paul Weiss Rifkind Wharton & Garisn Attn Andrew Rosenberg & Alice Eaton 1285 6th Ave New York NY 10019 Pioneer Drilling Services Ltd Attn: Stacy Locke 1250 Northeast Loop 410 Suite 1000 San Antonio TX 78209 Plains Marketing L.P. Attn: Patricia Williams Prewitt 10953 Vista Lake Court Law Offc Patricia Williams Prewitt Navasota TX 77868 Polar Midstream LLC Attn: Brock M. Degeyter 5910 North Central Expressway Suite 350 Dallas TX 75206 Polar Midstream LLC c/o Akerman LLP 2001 Ross Avenue Suite 3600 Attn John Mitchell & Y. Archiyan Dallas TX 75201 Purity Oilfield Services LLC Attn: Marshall T. Hunt 2101 Cedar Springs Road Suite 650 Dallas TX 75201 Railroad Commission of Texas c/o Office of the Atty General TX PO Box 12548 - MC 008 Attn Jason B Binford & Abigail Ryan Austin TX 78711-2548 Railroad Commission of Texas Office of General Counsel PO Box 12967 Austin TX 78711-2967 Reeves County Tax District c/o McCreary Veselka Bragg Allen PO Box 1269 Attn: Tara LeDay Round Rock TX 78680 Regions Bank c/o Kane Russell Coleman Logan PC 901 Main Street Suite 5200 Attn: Joseph M. Coleman Dallas TX 75202 Rusco Operating LLC Attn: Xuan Yong 98 San Jacinto Blvd Suite 550 Austin TX 78701 Schlumberger Technology Corporation c/o Snow Spence Green LLP 2929 Allen Parkway Suite 2800 Attn: Phil Snow Houston TX 77019 Securities and Exchange Commission 100 F Street NE Washington DC 20549 Securities and Exchange Commission Attn: Jolene M. Wise 175 W. Jackson Blvd Suite 1450 Chicago IL 60604 Securities and Exchange Commission New York Regional Office 200 Vesey St Ste 400 Attn Andrew Calamari RD New York NY 10281-1022 Seitel Data Ltd. c/o Clark Hill Strasburger 720 Brazos Suite 700 Attn: Duane J. Brescia Austin TX 78701 Sentry Crane Services Attn: Michael Waliezer 1505 21st Ave NW Watford City ND 58854 Simpson Thacher & Bartlett LLP Sandeep Qusba and Kathrine McLendon 425 Lexington Avenue New York NY 10017 Steel Energy Services Ltd. Attn: Stewart J. Peterson 5265 Ronald Reagan Blvd. Suite 110 Johnstown CO 80534 Sun Well Service Inc Attn: Kevin Jeffreys 118 84th St. W Williston ND 58801 Texas CEQ Attn: Legal PO Box 13087 Austin TX 78711-3087 Texas Comptroller c/o Bankruptcy & Collections Div. PO Box 12548 Austin TX 78711-2548 The Ad Hoc Committee of Noteholders c/o Porter Hedges LLP 1000 Main Street 36th Floor Attn: J Higgins E English G Graham Houston TX 77002 The Ad Hoc Committee of Noteholders Paul Weiss Rifkind Wharton & Garisn 1285 Avenue of the Americas A Rosenberg A Eaton MTurkelORahnama New York NY 10019 The Bank of NY Mellon Trust Co Attn: Jennifer J. Provenzano 505 Ross Street 12th Floor Pittsburgh PA 15262 The Bank of NY Mellon Trust Co Attn: Jennifer J. Provenzano 2 North LaSalle - 7th Floor Chicago IL 60602 The Bank of NY Mellon Trust Co Corporate Trust Division Fin. Unit 101 Barclay Street New York NY 10286 Triangle Electric Inc Attn: David Hoerner 2644 1st Ave E Williston ND 58801 TX Office Of The Attorney General 300 W. 15Th St Austin TX 78701 U.S. Trustee Office of US Trustee Attn: Hector Duran 515 Rusk Avenue Suite 3516 Houston TX 77002 Unclaimed Prop of Texas Cmptroller c/o Office of the AG of Texas PO Box 12548- MC 008 Attn Jason B Binford & Abigail Ryan Austin TX 78711-2548 Unisted States of America US Attorney's Office SDTX 1000 Louisiana St. Suite 2300 Attn: Richard A. Kincheloe Houston TX 2300 Unit Drilling Company Attn: David Case 8310 South Valley Hwy Suite 300 Englewood CO 80112 US Attorney's Office Southern District of Texas 1000 Lousiana Ste 2300 Houston TX 77002 US Trustee Office of US Trustee Attn: Stephen Douglas Statham 515 Rusk Avenue Suite 3516 Houston TX 77002 Utah DEQ Attn: Legal PO Box 144810 Salt Lake City UT 84114-4810 Utah Office Of The Attorney General Utah State Capitol Complex 350 North State St Ste 230 Salt Lake City UT 84114 Ward County and Ector CAD c/o Linebarger Goggan Blair Sampson 112 E Pecan Street Suite 2200 Attn: Don Stecker San Antonio TX 78205 Wells Fargo Bank N.A. Attn: David Tameron PO Box 63020 San Francisco CA 94163 Wells Fargo Bank N.A. Attn: Yucel Ozel Client Services PO Box 63020 San Francisco CA 94163 Wells Fargo Bank N.A. Marcia Martinez Client Services PO Box 63020 San Francisco CA 94163 WesternGeco LLC c/o Gieger Laborde & Laperouse LLC 701 Poyrdras Street Attn: Andrew A. Braun New Orleans LA 70139-4800 Wy Office Of The Attorney General 2320 Capitol Ave Kendrick Building Cheyenne WY 82002 Wyoming DEQ 200 W 17th Street Cheyenne WY 82002 XTO Energy Inc. & ExxonMobil Corp Robert Forshey & Lydan Lankford 777 Main St Suite 1290 Forshey & Prostok LLP Fort Worth TX 76102 Zavanna LLC & Zavanna Orr LLC c/o Steptoe & Johnson PLLC 1780 Hughes Landing Blvd Suite 750 Attn: Arthur M. Standish The Woodlands TX 77380

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 3 of 3 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 59 of 70

Exhibit D

Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 60 of 70

Exhibit D Served Via Electronic Mail

Name Attention Address 1 Email Alabama Department of Environmental Management [email protected] Andrews Independent School District, Anderws County Tax Office, Balmorhea Independent School District, Gaines County Appraisal District, Howard County Tax Office, Kermit Independent School District, and Yoakum County Tax Office c/o Perdue, Brandon, Fielder, Collins & Mott, LLP Attn: Laura J. Monroe [email protected] Aransas County, Dewitt County and Nueces County c/o Linebarger Goggan Blair & Samspon, LLP Attn: Diane W. Sanders [email protected] Archrock Partners Operating LLC c/o Anderson Lehrman Barre & Maraist, LLP Attn: Kevin M. Maraist [email protected] Archrock Partners Operating LLC c/o Anderson, Lehrman, Barre & Maraist, LLP Attn: Kevin M. Maraist [email protected] Atlas Oil Company Attn: John E. Ortoleva, Jr. [email protected] Atlas Oil Company Attn: Joseph E. Rivera [email protected] Attn: Michael D. Warner & [email protected] Atlas Oil Company c/o Cole Schotz PC Benjamin L. Wallen [email protected] AuditBoard, Inc. c/o Fox Rothschild LLP Attn: Martha B. Chovanes [email protected] Attn: Henry Flores & Kenneth [email protected] Balanced Energy Oilfield Services USA Inc. c/o Rapp & Krock, PC M. Krock [email protected] Attn: Glenn E. Siegel and [email protected] Bank of New York Mellon Trust Company, N.A. c/o Morgan, Lewis & Bockius LLP Nakisha Duncan [email protected] Bank of New York Mellon Trust Company, N.A. c/o Morgan, Lewis & Bockius LLP Attn: Rachel J. Mauceri [email protected] Bank of New York Mellon Trust Company, N.A. c/o Morgan, Lewis, & Bockius LLP Attn: Winstol D. Carter, Jr. [email protected] BCSP Denver Property LLC c/o Goulston & Storrs PC Attn: Trevor R. Hoffmann [email protected] BCSP Denver Property LLC c/o Goulston & Storrs PC [email protected] [email protected] Attn: Keith M. Aurzada, Michael [email protected] Big Horn Rural Electric Company c/o Reed Smith LLP P. Cooley, & Lindsey L. Robin [email protected] BNN Redtail, LLC Attn: Mark Ritchie [email protected] BNN Western, LLC Attn: Matt Sheehy [email protected] BNN Western, LLC c/o Sidley Austin LLP Attn: David Kronenberg, Esq. [email protected] BNN Western, LLC, BNN North Dakota, LLC, Tallgrass Midstream, LLC, Trailblazer Pipeline Company LLC, Buckhorn SWD Solutions, LLC and Buckhorn Energy c/o Sidley Austin LLP Attn: Hannah Rozow Owolabi [email protected] BP America Production Company c/o Liskow and Lewis [email protected] Brazoria County Tax Office c/o Perdue, Brandon, Fielder, Collins & Mott, LLP Attn: Owen M. Sonik [email protected] Attn: Alfredo R. Perez and [email protected] Caliber North Dakota LLC c/o Weil, Gotshal Manges LLP Brenda Funk [email protected] CGGVeritas Land (U.S) Inc. c/o Adams and Reese LLP Attn: Scott R. Cheatham [email protected] Chemoil Corporation Attn: Chad O'Neil [email protected] [email protected] Attn: Edward L. Ripley, Lisa M. [email protected] Chevron U.S.A. Inc. c/o Andrews Myers, P.C. Norman and Patrick A. Kelly [email protected] Chevron USA Inc Attn: Michael K. Wirth [email protected] Chrysalis MSP, LLC c/o Wells & Cuellar, P.C. Attn: James E. Cuellar [email protected] Attn: Robert P. Franke & [email protected] Dorchester Minerals, L.P. c/o Clark Hill Strasburger Andrew G. Edson [email protected] Eighty-Eight Oil LLC, an Affiliate of True Oil Company c/o Snow Spence Green LLP Attn: Kenneth P Green [email protected] EJS Investment Holdings, LLC c/o Chamberlain Hrdlicka Attn: Jarrod B. Martin [email protected] Element Fleet Corporation c/o Saul Ewing Arnstein & Lehr LLP Attn: John D. Demmy [email protected] Energy Eleven, L.P. c/o Whitaker Chalk Swindle & Schwartz PLLC Attn: Robert A. Simon [email protected]

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 1 of 3 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 61 of 70

Exhibit D Served Via Electronic Mail

Name Attention Address 1 Email Equinor Energy LP c/o Kean Miller LLP Attn: J. Eric Lockridge [email protected] Garth L. Harmon, Wagner Harmon and Shotgun Creek Developments, LLC c/o Jones, Gillaspia & Loyd LLP Attn: John Bruster "Bruse" Loyd [email protected] G-Style Transport, LLC; GST Casing, LLC; and All In Oil Field Services; LLC c/o Shapiro Bieging Barber Otteson LLP Attn: John C. Leininger [email protected] Halliburton Energy Services Inc Attn: Jeff Miller [email protected] [email protected] Attn: Keith M. Aurzada, Michael [email protected] High West Energy Inc. c/o Reed Smith LLP P. Cooley, & Lindsey L. Robin [email protected] Hiland Partners Holdings LLC c/o Law Office of Patricia Williams Prewitt Attn: Patricia Williams Prewitt [email protected] Attn: Mark E. Andrews & [email protected] Hunt Oil Company c/o Dykema Gossett PLLC Patrick Huffstickler [email protected] Hunt Oil Company c/o Dykema Gossett PLLC Attn: Patrick Huffstickler [email protected] Jackson Walker LLP Attn: Kendra Gradney [email protected] Jamex Marketing, LLC Attn: James Ballengee [email protected] Jamex Marketing, LLC c/o Forshey & Prostok, LLP Attn: Jeff P. Prostok [email protected] [email protected] Attn: Joel W. Reese, Pete [email protected] Marketos, Leslie Chaggaris, & [email protected] Jamex Marketing, LLC c/o Reese Marketos LLP Tyler J. Bexley [email protected] Jasper County, Montgomery County, Harris County, Angelina County c/o Linebarger Goggan Blair & Sampson, LLP Attn: Tara L. Grundemeier [email protected] JMAC Resources Inc Attn: Darla Miller [email protected] JMAC Resources, Inc. Attn: Jon McCreary [email protected] JPMorgan Chase Bank, N.A. Attn: Cindy Chin, Client Service Associate [email protected] JPMorgan Chase Bank, N.A. Attn: Genny Garciga, Client Service Associate [email protected] J-W Power Company c/o Miller Mentzer Walker, P.C. Attn: Julie A. Walker [email protected] Kansas Department of Health and Environment [email protected] Karen Severtsen c/o Turman & Lang, Ltd. Attn: Katrina A. Truman Lang [email protected] Key Energy Services LLC Attn: J. Marshall Dodson [email protected] Kinder Morgan Treating LP c/o Law Office of Patricia Williams Prewitt Attn: Patricia Williams Prewitt [email protected] Lana Conklin and Crystal Henzi, as Trustees of the Ruth Attn: Jay M. Ross & Monique [email protected] Parker Wood Revocable Trust dated July 27, 1994 c/o Hopkins & Carley D. Jewett-Brewster [email protected] LPG Capital Partners, LP c/o Letendre Group Attn: Benoit M. Letendre [email protected] Attn: Clay M. Taylor & Bryan C. [email protected] Marathon Oil Company c/o Ellis Eppich Schafer Jones LLP Assink [email protected] Attn: Carl D. Neff & Kasey H. [email protected] McKenzie Electric Cooperative, Inc. c/o Fox Rothschild LLP DeSantis [email protected] McKenzie Electric Cooperative, Inc. c/o Fox Rothschild LLP Attn: David Grant Cooks [email protected] McKenzie Energy Partners, Globe Energy Services, Inc., Attn: Maria Bartlett & Zachary [email protected] and Globe Chemical LLC dba Tech Management c/o Doré Rothberg McKay, P.C. S. McKay [email protected] Michigan Department of Environment, Great Lakes, and [email protected] Montana Department of Revenue Attn: Teresa G. Whitney [email protected] Montana Department of Revenue c/o Husch Blackwell LLP Attn: Lynn H. Butler [email protected] Mountrail-Williams Electric Cooperative c/o Vogel Law Firm Attn: Jon R. Brakke [email protected] National Oilwell Varco LP Attn: Jose Bayardo [email protected] Nebraska Department of Environment and Energy [email protected]

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 2 of 3 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 62 of 70

Exhibit D Served Via Electronic Mail

Name Attention Address 1 Email North Dakota Department of Environmental Quality Attn: L. Dave Glatt, P.E. [email protected] Attn: Steven M. Johnson & [email protected] Northern Oilfield Services, LLC c/o Church, Harris, Johnson & Williams Grant Kelly [email protected] Office of the U.S. Trustee Attn: Stephen Douglas Statham [email protected] Attn: Jason S. Brookner & Paul [email protected] Official Committee of Unsecured Creditors c/o Gray Reed & McGraw LLP D. Moak [email protected] Official Committee of Unsecured Creditors c/o Gray Reed & McGraw LLP Attn: Lydia R. Webb [email protected] Attn: Jeffrey N. Pomerantz & [email protected] Official Committee of Unsecured Creditors c/o Pachulski Stang Ziehl & Jones LLP Shirley S. Cho [email protected] Attn: Robert J. Feinstein & [email protected] Official Committee of Unsecured Creditors c/o Pachulski Stang Ziehl & Jones LLP Steven W. Golden [email protected] Oracle America, Inc. c/o Buchalter, a Professional Corporation Attn: Shawn M. Christianson [email protected] Ovintiv Production Inc. f/k/a Newfield Production Company c/o Thompson & Knight LLP Attn: Steven J. Levitt [email protected] Attn: Tye C. Hancock & [email protected] Ovintiv Production Inc. f/k/a Newfield Production Company c/o Thompson & Knight LLP Anythony F. Pirraglia [email protected] Pioneer Drilling Services Ltd Attn: Stacy Locke [email protected] Plains Marketing, L.P. c/o Law Office of Patricia Williams Prewitt Attn: Patricia Williams Prewitt [email protected] Polar Midstream, LLC Attn: Brock M. Degeyter [email protected] Attn: John E. Mitchell and [email protected] Polar Midstream, LLC c/o Akerman LLP Yelena Archiyan [email protected] Attn: Jason B. Binford & Abigail [email protected] Railroad Commission of Texas c/o Office of the Attorney General of Texas Ryan [email protected] Reeves County Tax District c/o McCreary, Veselka, Bragg & Allen, P.C. Attn: Tara LeDay [email protected] Regions Bank c/o Kane Russell Coleman Logan PC Attn: Joseph M. Coleman [email protected] Securities and Exchange Commission Attn: Jolene M. Wise [email protected] Sentry Crane Services Attn: Michael Waliezer [email protected] [email protected] Attn: Andrew N. Rosenberg, [email protected] Alice Belisle Eaton, Michael M. [email protected] The Ad Hoc Committee of Noteholders c/o Paul, Weiss, Rifkind, Wharton & Garrison LLP Turkel & Omid Rahnama [email protected] Attn: John F. Higgins, Eric M. [email protected] English and Genevieve M. [email protected] The Ad Hoc Committee of Noteholders c/o Porter Hedges LLP Graham [email protected] The Bank of New York Mellon Trust Company, N.A. Attn: Jennifer J. Provenzano [email protected] U.S. Trustee Office of US Trustee Attn: Hector Duran [email protected] Unit Drilling Company Attn: David Case [email protected] United States Attorney's Office c/o Southern District of Texas Attn: Richard A. Kincheloe [email protected] US Trustee Office of US Trustee Attn: Stephen Douglas Statham [email protected] Wells Fargo Bank, N.A. Attn: David Tameron [email protected] Wells Fargo Bank, N.A. Attn: Marcia Martinez, Client Services Partner [email protected] Wells Fargo Bank, N.A. Attn: Yucel (Yoo-Gel) Ozel, Dedicated Client Services Officer [email protected] WesternGeco LLC c/o Gieger, Laborde & Laperouse, LLC Attn: Andrew A. Braun [email protected] Attn: J. Robert Forshey and [email protected] XTO Energy Inc. & ExxonMobil Corporation c/o Forshey & Prostok LLP Lynda L. Lankford [email protected]

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 3 of 3 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 63 of 70

Exhibit E

Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 64 of 70

Exhibit E Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Alabama Department of Environmental Management PO Box 301463 Montgomery AL 36130-1463 Alabama Office Of The Attorney General 501 Washington Ave Montgomery AL 36104 Andrews Independent School District, Anderws County Tax Office, Balmorhea Independent School District, Gaines County Appraisal District, Howard County Tax Office, Kermit Independent School District, and Yoakum County Tax Office c/o Perdue, Brandon, Fielder, Collins & Mott, LLP Attn: Laura J. Monroe PO Box 817 Lubbock TX 79408 Aransas County, Dewitt County and Nueces County c/o Linebarger Goggan Blair & Samspon, LLP Attn: Diane W. Sanders PO Box 17428 Austin TX 78760-7428 Gaslight Square, 1001 Third Archrock Partners Operating LLC c/o Anderson Lehrman Barre & Maraist, LLP Attn: Kevin M. Maraist Street Suite 1 Corpus Christi TX 78404 Gaslight Square, 1001 Third Archrock Partners Operating LLC c/o Anderson, Lehrman, Barre & Maraist, LLP Attn: Kevin M. Maraist Street Suite 1 Corpus Christi TX 78404 Arkansas Department of Energy and Environment Attn: Division of Environmental Quality 5301 Northshore Drive North Little Rock AR 72118-5317 Arkansas Office Of The Attorney General 323 Center St Suite 200 Little Rock AR 72201 Atlas Oil Company Attn: John E. Ortoleva, Jr. 24501 Ecorse Rd. Taylor MI 48180 Atlas Oil Company Attn: Joseph E. Rivera 24501 Ecorse Rd Taylor MI 48180 Atlas Oil Company c/o Cole Schotz P.C. Attn: Michael D. Warner & Benjamin L. Wallen 301 Commerce Street Suite 1700 Fort Worth TX 76102 AuditBoard, Inc. c/o Fox Rothschild LLP Attn: Martha B. Chovanes 2000 Market Street 20th Floor Philadelphia PA 19103-3222 Balanced Energy Oilfield Services USA Inc. c/o Rapp & Krock, PC Attn: Henry Flores & Kenneth M. Krock 1980 Post Oak Blvd Suite 1200 Houston TX 77056 Bank of New York Mellon Trust Company, N.A. c/o Morgan, Lewis & Bockius LLP Attn: Glenn E. Siegel and Nakisha Duncan 101 Park Avenue New York NY 10178-0600 Bank of New York Mellon Trust Company, N.A. c/o Morgan, Lewis & Bockius LLP Attn: Rachel J. Mauceri 1701 Market Street Philadelphia PA 19103 Bank of New York Mellon Trust Company, N.A. c/o Morgan, Lewis, & Bockius LLP Attn: Winstol D. Carter, Jr. 1000 Louisiana Street Suite 4000 Houston TX 77002 BCSP Denver Property LLC c/o Goulston & Storrs PC 400 Atlantic Avenue Boston MA 02110-3333 BCSP Denver Property LLC c/o Goulston & Storrs PC Attn: Trevor R. Hoffmann 885 Third Avenue 18th Floor New York NY 10022 Attn: Keith M. Aurzada, Michael P. Cooley, & Big Horn Rural Electric Company c/o Reed Smith LLP Lindsey L. Robin 2501 N Harwood Suite 1700 Dallas TX 75201 Black Hawk Energy Services Ltd Attn: Mike Davis 118 84th St Williston ND 58801 BNN Redtail, LLC Attn: Mark Ritchie 370 Van Gordon St Lakewood CO 80228 BNN Western, LLC Attn: Matt Sheehy 370 Van Gordon Street Lakewood CO 80228 BNN Western, LLC c/o Sidley Austin LLP Attn: David Kronenberg, Esq. 1501 K Street NW Suite 600 Washington DC 20005 BNN Western, LLC, BNN North Dakota, LLC, Tallgrass Midstream, LLC, Trailblazer Pipeline Company LLC, Buckhorn SWD Solutions, LLC and Buckhorn Energy Services, LLC c/o Sidley Austin LLP Attn: Hannah Rozow Owolabi 1000 Louisiana St Suite 5900 Houston TX 77002 BP America Production Company c/o Liskow and Lewis 1001 Fannin Street Suite 1800 Houston TX 77002 Brazoria County Tax Office c/o Perdue, Brandon, Fielder, Collins & Mott, LLP Attn: Owen M. Sonik 1235 North Loop West Suite 600 Houston TX 77008 British Columbia Ministry Of Environment & Climate Change Strategy Contacts PO Box 9360 Stn Prov Govt Victoria BC V8W 9M2 Canada Caliber North Dakota LLC c/o Weil, Gotshal Manges LLP Attn: Alfredo R. Perez and Brenda Funk 700 Louisiana Street Suite 1700 Houston TX 77002 California Environmental Protection Agency 1001 I Street PO Box 2815 Sacramento CA 95814 California Office Of The Attorney General Po Box 944255 Sacramento CA 94244-2550 CGGVeritas Land (U.S) Inc. c/o Adams and Reese LLP Attn: Scott R. Cheatham 701 Poydras Street Suite 4500 New Orleans LA 70139 Chemoil Corporation Attn: Chad O'Neil 40 E. Sheridan Avenue Suite 400 Oklahoma City OK 73104 Attn: Edward L. Ripley, Lisa M. Norman and Chevron U.S.A. Inc. c/o Andrews Myers, P.C. Patrick A. Kelly 1885 St. James Place 15th Floor Houston TX 75506 Chevron USA Inc Attn: Michael K. Wirth 6001 Bollinger Canyon Road San Ramon CA 94583 Chrysalis MSP, LLC c/o Wells & Cuellar, P.C. Attn: James E. Cuellar 440 Louisiana Suite 718 Houston TX 77002 Colorado Department of Public Health and Environment 4300 Cherry Creek Drive S Denver CO 80246 Colorado Office Of The Attorney General Ralph L. Carr Judicial Building 1300 Broadway 10th Floor Denver CO 80203 CS Welding, LLC Attn: Cesar Salgado 1101 4th St SE Suite 206 Stanley ND 58784 CTAP, LLC Attn: Seth Merrill 2585 Trailridge Dr East Lafayette CO 80026 Delaware Department Of Justice Carvel State Office Building 820 N French Street Wilmington DE 19801 Delaware Department of Natural Resources and Environmental Control The Richardson & Robbins Building 89 Kings Highway Dover DE 19901 Dorchester Minerals, L.P. c/o Clark Hill Strasburger Attn: Robert P. Franke & Andrew G. Edson 901 Main Street Suite 6000 Dallas TX 75202-3794 Eighty-Eight Oil LLC, an Affiliate of True Oil Company c/o Snow Spence Green LLP Attn: Kenneth P Green 2929 Allen Parkway Suite 2800 Houston TX 77019 EJS Investment Holdings, LLC c/o McDowell Hetherington LLP Attn: Jarrod B. Martin 1001 Fannin Street Suite 2700 Houston TX 77002 1201 N Market Street, Suite Element Fleet Corporation c/o Saul Ewing Arnstein & Lehr LLP Attn: John D. Demmy 2300 PO Box 1266 Wilmington DE 19899 Energy Eleven, L.P. c/o Whitaker Chalk Swindle & Schwartz PLLC Attn: Robert A. Simon 301 Commerce Street Suite 3500 Fort Worth TX 76102 400 Convention Street, Suite Equinor Energy LP c/o Kean Miller LLP Attn: J. Eric Lockridge 700 PO Box 3513 Baton Rouge LA 70802 Estvold Oilfield Services Inc Attn: Jake Estvold 3962 84th Ave NW New Town ND 58763

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 1 of 3 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 65 of 70

Exhibit E Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Garth L. Harmon, Wagner Harmon and Shotgun Creek Developments, LLC c/o Jones, Gillaspia & Loyd LLP Attn: John Bruster "Bruse" Loyd 4400 Post Oak Parkway Suite 2360 Houston TX 77027 G-Style Transport, LLC; GST Casing, LLC; and All In Oil 5430 Lyndon B Johnson Field Services; LLC c/o Shapiro Bieging Barber Otteson LLP Attn: John C. Leininger Freeway Suite 1540 Dallas TX 75240 Halliburton Energy Services Inc Attn: Jeff Miller 3000 N. Sam Houston Pkwy E. Houston TX 77032 Attn: Keith M. Aurzada, Michael P. Cooley, & High West Energy Inc. c/o Reed Smith LLP Lindsey L. Robin 2501 N Harwood Suite 1700 Dallas TX 75201 Hiland Partners Holdings LLC c/o Law Office of Patricia Williams Prewitt Attn: Patricia Williams Prewitt 10953 Vista Lake Court Navasota TX 77868 Hunt Oil Company c/o Dykema Gossett PLLC Attn: Mark E. Andrews & Patrick Huffstickler 1717 Main Street Suite 4200 Dallas TX 75201 Hunt Oil Company c/o Dykema Gossett PLLC Attn: Patrick Huffstickler 112 E. Pecan Street Suite 1800 San Antonio TX 78205 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 Jackson Walker LLP Attn: Kendra Gradney 100 Congress Avenue Suite 1100 Austin TX 78701 Jamex Marketing, LLC Attn: James Ballengee 5151 Beltline Rd Suite 715 Dallas TX 75254 Jamex Marketing, LLC c/o Forshey & Prostok, LLP Attn: Jeff P. Prostok 777 Main Street Suite 1290 Fort Worth TX 76102 Attn: Joel W. Reese, Pete Marketos, Leslie Jamex Marketing, LLC c/o Reese Marketos LLP Chaggaris, & Tyler J. Bexley 750 N Saint Paul St Suite 600 Dallas TX 75201-3201 Jasper County, Montgomery County, Harris County, Angelina County c/o Linebarger Goggan Blair & Sampson, LLP Attn: Tara L. Grundemeier PO Box 3064 Houston TX 77253-3064 JMAC Resources Inc Attn: Darla Miller 121 48th Ave SW Williston ND 58801 JMAC Resources, Inc. Attn: Jon McCreary 1505 N. Miller St. Suite 260 Wenatchee WA 98801 Jpmorgan Chase Bank, N.A. Attn: Ryan Fuessel 1125 17th Street Floor 3 Denver CO 80802 J-W Power Company c/o Miller Mentzer Walker, P.C. Attn: Julie A. Walker 100 N. Main St. PO Box 130 Palmer TX 75152 Kansas Department of Health and Environment Curtis State Office Building 1000 SW Jackson St Topeka KS 66612 Kansas Office Of The Attorney General 120 Sw 10Th Ave 2Nd Fl Topeka KS 66612 Karen Severtsen c/o Turman & Lang, Ltd. Attn: Katrina A. Truman Lang 505 N Broadway, Suite 207 PO Box 110 Fargo ND 58107-0110 Key Energy Services LLC Attn: J. Marshall Dodson 1301 McKinney St Suite 1800 Houston TX 77010 Kinder Morgan Treating LP c/o Law Office of Patricia Williams Prewitt Attn: Patricia Williams Prewitt 10953 Vista Lake Court Navasota TX 77868 Lana Conklin and Crystal Henzi, as Trustees of the Ruth Parker Wood Revocable Trust dated July 27, 1994 c/o Hopkins & Carley Attn: Jay M. Ross & Monique D. Jewett-Brewster The Letitia Building 70 S First St San Jose CA 95113-2406 Louisiana Department of Environmental Quality 602 North Fifth Street Baton Rouge LA 70802 Louisiana Office Of The Attorney General 1885 N. Third St Baton Rouge LA 70802 LPG Capital Partners, LP c/o Letendre Group Attn: Benoit M. Letendre 123 Second Street PO Box 92 Baraboo WI 53913 Marathon Oil Company c/o Ellis Eppich Schafer Jones LLP Attn: Clay M. Taylor & Bryan C. Assink 420 Throckmorton Street Suite 1000 Fort Worth TX 76102 Citizens Bank Center, 919 McKenzie Electric Cooperative, Inc. c/o Fox Rothschild LLP Attn: Carl D. Neff & Kasey H. DeSantis North Market Street Suite 300 Wilmington DE 19801 Two Lincoln Centre, 5420 McKenzie Electric Cooperative, Inc. c/o Fox Rothschild LLP Attn: David Grant Cooks Lyndon B. Johnson Fwy Suite 1200 Dallas TX 75240-6215 McKenzie Energy Partners LLC Attn: Thomas McKenzie PO Box 1037 Watford City ND 58854 McKenzie Energy Partners, Globe Energy Services, Inc., and Globe Chemical LLC dba Tech Management c/o Doré Rothberg McKay, P.C. Attn: Maria Bartlett & Zachary S. McKay 17171 Park Row Suite 160 Houston TX 77084 Michigan Department of Environment, Great Lakes, and Energy Constitution Hall 525 West Allegan PO Box 30473 Lansing MI 48909 Michigan Department Of The Attorney General G. Mennen Williams Building 525 W Ottawa St 7th Floor Lansing MI 48933 Mississippi Department of Environmental Quality PO Box 2261 Jackson MS 39225 Mississippi Office Of The Attorney General Walter Sillers Building 550 High St Suite 1200 Jackson MS 39201 Montana Department of Environmental Quality PO Box 200901 Helena MT 59620-0901 Montana Department of Revenue Attn: Teresa G. Whitney Legal Services Office 125 North Roberts Street PO Box 7701 Helena MT 59604-7701 Montana Department of Revenue c/o Husch Blackwell LLP Attn: Lynn H. Butler 111 Congress Avenue Suite 1400 Austin TX 78701 Montana Office Of The Attorney Genereal 215 N. Sanders Justice Building 3rd Floor Helena MT 59601 Mountrail-Williams Electric Cooperative c/o Vogel Law Firm Attn: Jon R. Brakke 218 NP Avenue PO Box 1389 Fargo ND 58107-1389 National Oilwell Varco LP Attn: Jose Bayardo 7909 Parkwood Circle Drive Houston TX 77036 Nebraska Department of Environment and Energy 1200 N Street Suite 400 PO Box 98922 Lincoln NE 68509-8922 Nebraska Office Of The Attorney General 2115 State Capitol Lincoln NE 68509 New Mexico Environment Department PO Box 5469 Santa Fe NM 87502-5469 New Mexico Office Of The Attorney General 408 Galisteo Street Villagra Building Santa Fe NM 87501 NexTier Completion Solutions, Inc. Attn: Robert Drummond 3990 Rogerdale Houston TX 77042 North Dakota Department of Environmental Quality Attn: L. Dave Glatt, P.E. 918 E Divide Ave 4th Floor Bismarck ND 58501 North Dakota Office Of The Attorney Genereal State Capitol 600 E Boulevard Ave Deptartment 125 Bismarck ND 58505 Northern Oilfield Services, LLC Attn: Sheldon Van Vost 1637 44th St W Williston ND 58801 Northern Oilfield Services, LLC c/o Church, Harris, Johnson & Williams Attn: Steven M. Johnson & Grant Kelly 114 Third Street South PO Box 1645 Great Falls MN 59403-1645 In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 2 of 3 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 66 of 70

Exhibit E Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Country Office of the U.S. Trustee Attn: Stephen Douglas Statham 515 Rusk Street Suite 3516 Houston TX 77056 Official Committee of Unsecured Creditors c/o Gray Reed & McGraw LLP Attn: Jason S. Brookner & Paul D. Moak 1300 Post Oak Blvd Suite 2000 Houston TX 77056 Official Committee of Unsecured Creditors c/o Gray Reed & McGraw LLP Attn: Lydia R. Webb 1601 Elm Street Suite 4600 Dallas TX 75201 Official Committee of Unsecured Creditors c/o Pachulski Stang Ziehl & Jones LLP Attn: Jeffrey N. Pomerantz & Shirley S. Cho 10100 Santa Monica Blvd 13th Floor Los Angeles CA 90067 Official Committee of Unsecured Creditors c/o Pachulski Stang Ziehl & Jones LLP Attn: Robert J. Feinstein & Steven W. Golden 780 Third Avenue 34th Floor New York NY 10017 Oklahoma Department of Environmental Quality PO Box 1677 Oklahoma City OK 73101-1677 Oklahoma Office Of The Attorney General 313 Ne 21St St Oklahoma City OK 73105 Oracle America, Inc. c/o Buchalter, a Professional Corporation Attn: Shawn M. Christianson 55 Second Street 17th Floor San Francisco CA 94105-3493 One Arts Plaza, 1722 Routh Ovintiv Production Inc. f/k/a Newfield Production Company c/o Thompson & Knight LLP Attn: Steven J. Levitt Street Suite 1500 Dallas TX 75201 Ovintiv Production Inc. f/k/a Newfield Production Company c/o Thompson & Knight LLP Attn: Tye C. Hancock & Anythony F. Pirraglia 811 Main Street Suite 2500 Houston TX 77002 Patterson UTI Drilling Co LP Attn: William A. Hendricks, Jr. 10713 West Sam Houston Parkway North Suite 800 Houston TX 77064 Paul, Weiss, Rifkind, Wharton, & Garrison LLP Attn: Andrew Rosenberg and Alice Eaton 1285 6th Ave New York NY 10019 Pioneer Drilling Services Ltd Attn: Stacy Locke 1250 Northeast Loop 410 Suite 1000 San Antonio TX 78209 Plains Marketing, L.P. c/o Law Office of Patricia Williams Prewitt Attn: Patricia Williams Prewitt 10953 Vista Lake Court Navasota TX 77868 Polar Midstream, LLC Attn: Brock M. Degeyter 5910 North Central Expressway Suite 350 Dallas TX 75206 Polar Midstream, LLC c/o Akerman LLP Attn: John E. Mitchell and Yelena Archiyan 2001 Ross Avenue Suite 3600 Dallas TX 75201 Purity Oilfield Services LLC Attn: Marshall T. Hunt 2101 Cedar Springs Road Suite 650 Dallas TX 75201 Bankruptcy & Collections Railroad Commission of Texas c/o Office of the Attorney General of Texas Attn: Jason B. Binford & Abigail Ryan Division MC 008 PO Box 12548 Austin TX 78711-2548 Railroad Commission of Texas Office of General Counsel PO Box 12967 Austin TX 78711-2967 Reeves County Tax District c/o McCreary, Veselka, Bragg & Allen, P.C. Attn: Tara LeDay PO Box 1269 Round Rock TX 78680 Regions Bank c/o Kane Russell Coleman Logan PC Attn: Joseph M. Coleman 901 Main Street Suite 5200 Dallas TX 75202 Rusco Operating LLC Attn: Xuan Yong 98 San Jacinto Blvd Suite 550 Austin TX 78701 Schlumberger Technology Corporation Attn: Alexander C. Juden 5599 San Felipe 17th Floor Houston TX 77056 Securities and Exchange Commission 100 F Street, NE Washington DC 20549 Securities and Exchange Commission Attn: Andrew Calamari, Regional Director New York Regional Office 200 Vesey St Suite 400 New York NY 10281-1022 Securities and Exchange Commission Attn: Jolene M. Wise 175 W. Jackson Blvd Suite 1450 Chicago IL 60604 Seitel Data, Ltd. c/o Clark Hill Strasburger Attn: Duane J. Brescia 720 Brazos Suite 700 Austin TX 78701 Sentry Crane Services Attn: Michael Waliezer 1505 21st Ave NW Watford City ND 58854 Simpson Thacher & Bartlett LLP Attn: Sandeep Qusba and Kathrine McLendon 425 Lexington Avenue New York NY 10017 State of Louisiana Department of Natural Resources, Office of Mineral Resources c/o Civil Division/Lands & Natural Resources Attn: Ryan M. Seidemann PO Box 94005 Baton Rouge LA 70804-9005 Steel Energy Services, Ltd. dba Black Hawk Energy Services, Ltd. and Sun Well Service, Inc. Attn: Stewart J. Peterson 5265 Ronald Reagan Blvd Suite 100 Johnstown CO 80534-6513 Sun Well Service Inc Attn: Kevin Jeffreys 5265 Ronald Reagan Blvd Suite 100 Johnstown CO 80534-6513 Texas Commission on Environmental Quality Attn: Legal PO Box 13087 Austin TX 78711-3087 Texas Office Of The Attorney General 300 W. 15Th St Austin TX 78701 Attn: Andrew N. Rosenberg, Alice Belisle Eaton, The Ad Hoc Committee of Noteholders c/o Paul, Weiss, Rifkind, Wharton & Garrison LLP Michael M. Turkel & Omid Rahnama 1285 Avenue of the Americas New York NY 10019 Attn: John F. Higgins, Eric M. English and The Ad Hoc Committee of Noteholders c/o Porter Hedges LLP Genevieve M. Graham 1000 Main Street 36th Floor Houston TX 77002 The Bank of New York Mellon Trust Company, N.A. Attn: Jennifer J. Provenzano 505 Ross Street 12th Floor Pittsburgh PA 15262 The Bank of New York Mellon Trust Company, N.A. Attn: Jennifer J. Provenzano 2 North LaSalle 7th Floor Chicago IL 60602 The Bank of New York Mellon Trust Company, N.A. Corporate Trust Division-Corporate Finance Unit 101 Barclay Street New York NY 10286 The Unclaimed Property Division of the Texas Comptroller of Public Accounts c/o Office of the Attorney General of Texas Attn: Jason B. Binford & Abigail Ryan PO Box 12548 MC 008 Austin TX 78711-2548 The Unclaimed Property Division of the Texas Comptroller of Public Accounts c/o Office of the Attorney General of Texas Attn: Jason B. Binford & Abigail Ryan PO Box 12548 MC 008 Austin TX 78711-2548 Triangle Electric Inc Attn: David Hoerner 2644 1st Ave E Williston ND 58801 U.S. Trustee Office of US Trustee Attn: Hector Duran 515 Rusk Avenue Suite 3516 Houston TX 77002 Unit Drilling Company Attn: David Case 8310 South Valley Hwy Suite 300 Englewood CO 80112 United States Attorney's Office c/o Southern District of Texas Attn: Richard A. Kincheloe 1000 Louisiana St Suite 2300 Houston TX 77002 US Attorney's Office Southern District of Texas 1000 Lousiana Suite 2300 Houston TX 77002 US Trustee Office of US Trustee Attn: Stephen Douglas Statham 515 Rusk Avenue Suite 3516 Houston TX 77002 Utah Department of Environmental Quality PO Box 144810 Salt Lake City UT 84114-4810 Utah Office Of The Attorney General Utah State Capitol Complex 350 North State St Suite 230 Salt Lake City UT 84114 Ward County c/o Linebarger Goggan Blair & Sampson, LLP Attn: Don Stecker 112 E Pecan Street Suite 220 San Antonio TX 78205 WesternGeco LLC c/o Gieger, Laborde & Laperouse, LLC Attn: Andrew A. Braun 701 Poydras Street Suite 4800 New Orleans LA 70139-4800 Wyoming Department of Environmental Quality 200 W 17th Street Cheyenne WY 82002 Wyoming Office Of The Attorney General Kendrick Building 2320 Capitol Ave Cheyenne WY 82002 XTO Energy Inc. & ExxonMobil Corporation c/o Forshey & Prostok LLP Attn: J. Robert Forshey and Lynda L. Lankford 777 Main Street Suite 1290 Fort Worth TX 76102 Zavanna, LLC & Zavanna Orr, LLC c/o Steptoe & Johnson PLLC Attn: Arthur M. Standish 1780 Hughes Landing Blvd Suite 750 The Woodlands TX 77380 In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 3 of 3 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 67 of 70

Exhibit F

Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 68 of 70

Exhibit F Served Via First-Class Mail

Name Attention Address 1 Address 2 Address 3 City State Zip Kirkland & Ellis LLP Attn: Whitney Fogelberg 300 North LaSalle Chicago IL 60654 Office of the U.S. Trustee Attn: Stephen Douglas Statham 515 Rusk Street Suite 3516 Houston TX 77056 Official Committee of Unsecured Creditors c/o Pachulski Stang Ziehl & Jones LLP Attn: Jeffrey N. Pomerantz & Shirley S. Cho 10100 Santa Monica Blvd 13th Floor Los Angeles CA 90067 Official Committee of Unsecured Creditors c/o Pachulski Stang Ziehl & Jones LLP Attn: Robert J. Feinstein & Steven W. Golden 780 Third Avenue 34th Floor New York NY 10017 Simpson Thacher & Bartlett LLP Attn: Sandeep Qusba and Kathrine McLendon 425 Lexington Avenue New York NY 10017 Attn: Andrew N. Rosenberg, Alice Belisle The Ad Hoc Committee of Noteholders c/o Paul, Weiss, Rifkind, Wharton & Garrison LLP Eaton, Michael M. Turkel & Omid Rahnama 1285 Avenue of the Americas New York NY 10019 U.S. Trustee Office of US Trustee Attn: Hector Duran 515 Rusk Avenue Suite 3516 Houston TX 77002 Whiting Petroleum Corporation Attn: Bruce DeBoer 1700 Lincoln Suite 4700 Denver CO 80203

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 1 of 1 Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 69 of 70

Exhibit G

Case 20-32021 Document 581 Filed in TXSB on 07/02/20 Page 70 of 70

Exhibit G Served Via Electronic Mail

Name Attention Address 1 Email Kirkland & Ellis LLP Attn: Whitney Fogelberg [email protected] Office of the U.S. Trustee Attn: Stephen Douglas Statham [email protected] [email protected] Official Committee of Unsecured Creditors c/o Pachulski Stang Ziehl & Jones LLP Attn: Jeffrey N. Pomerantz & Shirley S. Cho [email protected] [email protected] Official Committee of Unsecured Creditors c/o Pachulski Stang Ziehl & Jones LLP Attn: Robert J. Feinstein & Steven W. Golden [email protected] [email protected] Simpson Thacher & Bartlett LLP Attn: Sandeep Qusba and Kathrine McLendon [email protected] [email protected] [email protected] Attn: Andrew N. Rosenberg, Alice Belisle [email protected] The Ad Hoc Committee of Noteholders c/o Paul, Weiss, Rifkind, Wharton & Garrison LLP Eaton, Michael M. Turkel & Omid Rahnama [email protected] U.S. Trustee Office of US Trustee Attn: Hector Duran [email protected] Whiting Petroleum Corporation Attn: Bruce DeBoer [email protected]

In re: Whiting Petroleum Corporation, et al. Case No. 20-32021 (DRJ) Page 1 of 1