COVID-19 Response Timeline Below is a historical look, depicting Atria’s COVID-19 protocols (a series of communications governing our outbreak response), procurement and initiatives to support the safety of our residents and employees.

FEBRUARY 27 FEBRUARY 27 24 documented COVID-19 cases in United States First crisis response planning meetings at the Support Center in Louisville, Kentucky

MARCH 3 Issued coronavirus response action plan and outbreak preventive protocol checklist • MARCH 6 All visitors screened for possible exposure • Heightened infection control training and communication • Preventive protocol checklist FEDERAL GUIDANCE Centers for Disease Control and Prevention (CDC) issued initial guidance on long-term care facilities MARCH 9 Published directives on reduced resident contact with MARCH 11 visitors and guests and restricted company travel • Transportation services limited to scheduled NYC St. Patrick’s Day Parade postponed appointments and scenic drives • Closed all resident self-service dining venues NBA suspends remainder of 2020 basketball season • Strongly recommended families not take residents out of communities for public STATE GUIDANCE gatherings California Department of Public Health published • Postponed/canceled all community events “Guidance for Limiting the Transmission of COVID-19 with expected 3 or more external visitors in Long-Term Care Facilities” New York State Department of Health sent letters to nursing homes and adult care facilities, providing guidance on preventing exposure to and spread of virus Florida Division of Emergency Management issues orders restricting visitation in long-term care facilities, including assisted living

MARCH 12 MARCH 12 Directed communities to reduce access to employees, MLB cancels 2020 spring training residents and essential visitors who meet stepped-up screening and delays start of season indefinitely protocols • Introduced 14-day quarantine for residents returning MARCH 13 to a community following travel • Transportation services limited to scheduled medical President Trump declares National Emergency appointments only • Postponed/canceled all community events with Schools begin closing expected visitors

FEDERAL GUIDANCE CMS updates nursing home guidance focusing on restrictions MARCH 14 for visitors and wearing personal protective equipment (PPE) Introduced staff and resident temperature screening requirements • Prior to access, required all visitors and staff to have their MARCH 15 temperature taken and recorded • Restricted group programs to fewer than 9 residents FEDERAL GUIDANCE CDC releases guidance recommending in-person events with more than 50 people be postponed for the next 8 weeks

STATE GUIDANCE California Governor Newsom signs Executive Order, prioritizing nursing homes and calls for higher focus on residents Florida Division of Emergency Management issued order prohibiting visitation to certain facilities for 30 days

MARCH 16

Kentucky Derby postponed to September

MARCH 17 MARCH 17 Established scalable process to supply PPE to all employees NCAA cancels 2020 Tournaments • Warehouse established and staffed in Louisville, Kentucky • Initiated weekly re-supply shipments process

MARCH 18 Promoted through suspension of communal dining and all group programs • Implemented in-apartment dining • Required employees to wear face masks when within 6 feet of a resident • Strongly encouraged residents to stay in their MARCH 20 apartments, only leave when necessary and practice social distancing when outside their apartments FEDERAL GUIDANCE • Required all visitors to wear face masks when in CDC issues guidance titled “Preventing the Spread of COVID-19 community in Retirement Communities and Independent Living Facilities (Interim Guidance)”

STATE GUIDANCE New York State Department of Health puts out nursing home MARCH 21 advisory recommendations to protect nursing home residents Implemented new resident engagement strategy • #SpreadLoveNotGerms campaign rolled out • Daily engagement newsletter launched

MARCH 22 Implemented full community quarantine and frequent symptom screening • Began checking resident temperatures twice a day and employees 3 times per shift MARCH 24 • Revised protocol to check essential visitors’ temperatures when entering communities 2020 Tokyo Summer Olympics postponed to 2021

MARCH 26 Issued additional screening question: “You or anyone in your household has traveled to the greater New York City metropolitan area in the last 14 days”

MARCH 27 MARCH 27 Contracted for private EMT services for New York City, Disney closes theme parks Westchester County, Long Island and Fort Lauderdale

MARCH 28

FEDERAL GUIDANCE MARCH 29 CDC issues Travel Advisory regarding Deployed vitals tracking app for temperature and oxygen recording Greater New York City metropolitan area

MARCH 31 Expanded PPE usage in Greater New York City metropolitan area • Began providing full scrubs • Provided N95 masks and gloves to employees for public transportation purposes

APRIL 6 APRIL 6 Implemented strict person under investigation (PUI) and The Masters moves to November 2020 PPE protocols

APRIL 10 Launched social distance dining pilot program in limited locations

APRIL 12 Began drive-up visits for residents and families in select APRIL 15 communities (as regulator guidance permitted)

Tour de France is postponed

CDC issues guidance specific to assisted living facilities APRIL 18 Expanded New York City metropolitan PPE to all New England APRIL 20 communities • Provided N95 masks and gloves for employees’ families The NYC Pride March is canceled (first time in history)

APRIL 23 Began COVID-19 testing for all employees APRIL 25

New York Times reports testing remains scarce as governors weigh reopening states

APRIL 27 Number of COVID-19 cases in Westchester (NYC suburb) is on the decline, county executive George Latimer reports APRIL 28 First release of Atria COVID-19 response timeline

APRIL 30 APRIL 30 CDC updates guidance on return-to-work criteria for Completed 173 virtual Quality Enhancement “snapshot” audits healthcare personnel diagnosed with COVID-19 from 7 to 10 days (Atria uses 14 days)

MAY 1 MAY 2 Additional PPE requirements introduced for housekeepers, Secretariat wins the virtual Kentucky Derby, including N95 masks and glove numbering against 12 fellow Triple Crown winners

More than a dozen U.S. states begin to loosen restrictions imposed to limit the spread of COVID-19

MAY 4 California Governor Newsom signs Executive Order allowing individual counties to implement less-restrictive measures than California as a whole

MAY 5 MAY 5 Testing of Life Guidance® memory care neighborhoods begins Major supermarket chains limit meat purchases in response to shortages stemming from virus outbreaks

MAY 6 MAY 6

April unemployment rate likely to hit 15% or higher, by far Atria begins testing new hires prior to start dates in the highest since the Great Depression; two months earlier, weekly testing clinics the rate was 3.5%, a 50-year low (New York Times) Quality Enhancement audits expand to include review of employee PPE criteria via virtual process

MAY 7

600 new COVID-19 cases appear in New York, predominantly from people at home and not working (CBS) MAY 8 ~15k tests have been administered to employees across U.S. communities U.S. communities begin roll out of social distancing walking program 17 Atria Retirement Canada communities begin to relax quarantine protocols for residents Yolo County, CA, issues recommendations to assisted living providers regarding “drive-up” visitation, using Atria’s protocol verbatim

MAY 8 Second release of Atria COVID-19 response timeline

MAY 10 MAY 10 New York Governor Cuomo issues Executive Order requiring Atria designs and prints 21,000+ custom Mother’s Day cards to nursing homes and adult care facilities to begin testing celebrate Atria moms all personnel for COVID-19

MAY 11

New York Governor Cuomo announces 3 regions of New York ready to begin reopening on May 15

“As States Rush to Reopen, Scientists Fear a Coronavirus Comeback” (New York Times)

New York State Department of Health requires hospitals to test all patients for COVID-19, and obtain a negative result, before discharging them to an adult care facility

MAY 12 MAY 12 Atria CEO John Moore issues update and FAQs in response to MLB proposes early July Opening Day April 28 letter CDC issues specific guidance for memory care units Atria continues its protocols with respect to memory care in long-term care facilities neighborhoods, which have been in place since early March and New Jersey Department of Health announces requirement exceed CDC guidance for testing of residents and employees in nursing homes and First round of employee testing complete; identified more than assisted living communities 100 COVID-19 positive asymptomatic employees

MAY 13 MAY 13 More than 15,000 people (~half of total Atria population) have 32 states have partially reopened been tested; <1% have been COVID-19+

MAY 14 More than 4,100 pen pal letters sent to Atria residents since March 17

MAY 15 MAY 15 States continue to ramp up regular COVID-19 Atria’s 27 reviews in 6 states completed to-date are infectious disease control audits deficiency-free Atria submits proprietary mobile app to Apple App Store; the app will provide residents and families real-time communication and monitoring of potential COVID-19 resident symptoms Social distance dining rolls out at 50+ communities

MAY 15 Third release of Atria COVID-19 response timeline

MAY 16 MAY 16 For the first time, the U.S. House of Representatives 60+ communities in the Northeast begin utilizing telemedicine approves proxy voting program in partnership with Northwell Health

MAY 17 Atria proprietary resident symptom tracking app approved by Apple App Store and available for free download to residents and families

MAY 18 MAY 18 Based on insights from Canadian markets, Atria pilots relaxing Yellowstone National Park announces quarantine protocols in lower-COVID-19 penetration areas in the it will open south and east entrances U.S., starting with 7 independent living communities in Texas and Arizona

MAY 19 MAY 19 Memory care neighborhood testing program is well underway, The New York Racing Association announces with ~1,350 residents tested the Belmont Stakes will replace the Kentucky Derby as the first leg of the Triple Crown for 2020

New York City Metropolitan area COVID-19 new daily case growth falls below 1,000 for the first time in 63 days

MAY 20 MAY 20 Social distance dining is taking place at 114 communities and All 50 states have reopened to some extent continues to be rolled out

Apple and Google release coronavirus-tracking apps MAY 21 525+ virtual Quality Enhancement reviews completed, with reviews at every community in the U.S. and Canada

1,300+ downloads and registrations for Atria’s proprietary app

MAY 22 Fourth release of Atria COVID-19 response timeline

MAY 23 Weekly community testing clinics continue to support ongoing testing of new staff hires, private duty aids (PDAs) and memory care move-ins to further help prevent virus from MAY 24 entering communities Mayo Clinic doctors sing “God Bless America” at Indianapolis Motor Speedway as tribute to front-line workers on the traditional day for the running of the Indy 500 MAY 25 Family and loved-one drive-up visits taking place at 100+ Atria communities

MAY 26 MAY 26 Protesters bring social and racial injustice grievances to the 2,000+ downloads and registrations of Atria’s proprietary app forefront after George Floyd’s death NHL announces definitive plans for return, the largest North American sports league to do so New York Stock Exchange trading floor reopens for the first time since March, stocks continue to rebound

MAY 27 MAY 27 Walt Disney World and SeaWorld present reopening plans Social distance walking program in 100+ communities

MAY 28 MAY 28 GlaxoSmithKline says it will produce 1 billion doses 1,300+ tests performed across Atria communities in one day of COVID-19 vaccine booster

MAY 29

World Health Organization (WHO) launches global information access portal for COVID-19

MAY 31 MAY 31

Washington state, location of the first COVID-19 Atria Lafayette Hill, in the Philadelphia suburbs, opens with weekly cases in the U.S., lifts stay-at-home order COVID-19 testing and safety protocols in place, making it the first new Atria community to open since the pandemic

JUNE 1

Italy launches voluntary contact-tracing app

JUNE 2

Dr. states the U.S. should have a “couple hundred million” doses of a COVID-19 vaccine by start of 2021 JUNE 4 Atria’s proprietary app for communication and COVID-19 College Board cancels plans for at-home SAT test in late 2020 symptom reporting rolled out to all U.S. communities; Spain reports no new deaths for the second consecutive day, 3,700+ downloads and registrations the first time since the outbreak started Cultural and sporting venues in France reopen

JUNE 4 JUNE 4

Plan established to test all new residents during weekly clinics; NBA announces plan to Atria-administered tests exceed 20,000 restart season on July 31

New York City Mayor Bill de Blasio stated the city is seeing the lowest infection rate since the start of the crisis

JUNE 5 JUNE 5 Labor Department announces U.S. economy Atria hosts 57th virtual employee onboarding webinar since gains 2.5 million jobs in May COVID-19 pandemic began Peaceful social justice protests in Louisville, Kentucky, remembering Breonna Taylor on what would have been her 27th birthday JUNE 8 JUNE 8 Following a 78-day lockdown, New York City Atria Ridgefield receives license from Connecticut Department enters phase one of reopening of Public Health

JUNE 9 JUNE 9

Atria launches its “Above & Beyond” recognition program, NASCAR reveals plan to reintroduce awarding $50 or $100 gift cards to employees demonstrating guests at select races by June 14 outstanding service throughout the COVID-19 pandemic

AMC Entertainment plans to have almost all its

movie theaters back open by July JUNE 9 Fifth release of Atria COVID-19 response timeline

JUNE 10 Atria ships COVID-19 testing supplies and return coolers to 170 communities for new move-ins and new hires at weekly testing clinics

JUNE 11 JUNE 11

Moderna announces expectation to begin Atria on pace for 700 monthly new hires, matching the company’s Phase 3 testing on potential vaccine in July Pre-COVID monthly average for first time since pandemic began

113 Atria communities, all without on-premise exposures for 28 days, or none at all, transition from “Quarantine Management” to “Interim Disease Management”

Atria provides 14,500 “Stay Safe Kits” (masks and hand sanitizers) to residents at communities entering Interim Disease Management

Atria completes baseline round of comprehensive testing of all Life Guidance memory care neighborhoods in U.S. communities

JUNE 12 Atria implements Positive Test Response (PTR) testing protocol requiring comprehensive contact tracing and a minimum of 10 COVID-19 tests within 24 hours of every new positive diagnosis

JUNE 14 JUNE 14

U.S. Department of Transportation announces it will send Atria has used 3.2 million masks to date 100 million masks to airports and other transit agencies Senior Housing News profiles Atria’s COVID-19 response & gradual re-opening plans JUNE 16

Governor Cuomo announces the U.S. Open will proceed as JUNE 17 planned in August in New York, but without spectators For the first time in three months, Family drive-up visits and social distance dining supported at more NY hospitals will begin to allow visitors again than half of Atria’s communities

JUNE 18

California, Arizona, Florida and Texas all record highest spikes in COVID-19 cases to date

JUNE 19 800 Atria employees nominated for “Above & Beyond” Award in program’s first week

JUNE 22

New York reopens office buildings, with as many as 300,000 expected to return to work

JUNE 23

New Jersey amusement and water parks will reopen on July 2 JUNE 26 U.S. announces it has performed nearly 22 million tests since Atria opens second community since the pandemic in Ridgefield, the pandemic started (1 per every 15 people in the U.S.) Connecticut, with routine COVID-19 testing and safety protocols in place

Atria completes 900 COVID-19 QE Virtual Snapshot Surveys, JUNE 27 with a 92% compliance rate Increasing protective measures in the South and the West, New Jersey, New York and Connecticut require Atria implements increased contact tracing and testing as 14-day quarantine for visitors from certain high disease well as issues N95/KN95 masks to staff daily to wear during exposure states (all in the South and the West) commuting in public in high-exposure markets where daily disease growth is greater than 10 per 100,000 people

JUNE 28 Social-distanced dining in place at more than 100 Atria JUNE 30 communities, salons in 54, fitness centers in 89, family drive-up programs in 120 and resident group gatherings in 80 No new COVID-19 deaths reported in Massachusetts for the first time in months

JULY 1 JULY 2 The EU reopens its borders to 15 countries, excluding the U.S. Atria implements High Exposure Market (daily disease growth is greater than 25 per 100,000 in population) and Moderate Exposure Market (10 per 100,000) designations and applicable community protocols, including escalating surveillance testing measures

JULY 3 JULY 3

Arizona warns there are only 156 (of 1,682 total) Atria expands screening questions for residents, employees available ICU beds in the State and essential visitors who have traveled to the High and Moderate Exposure Markets across the entire portfolio

JULY 6

JULY 6 NASDAQ hits new record as global stocks rally Atria introduces random testing in 43 communities without disease activity, but located in High Exposure Markets

JULY 7 JULY 7 NYC’s Board of Health approves guidelines that will allow Atria test administration exceeds 40,000 more than 3,000 child care centers to open next week with new limits Atria rolls out weekly and bi-weekly testing programs and limits group gathering and visitation programs in approximately 100 Rule requiring everyone in Toronto to wear masks/coverings High Exposure (2.5 or high new cases per 10,000) and Moderate in enclosed public spaces until at least September takes effect Exposure (1-2.5 cases per 10,000) Market communities

JULY 10 Atria Retirement Canada rolls out in-community family visits at JULY 11 most communities, with masks and social distancing required

Disney World reopens

JULY 12

New York City announces first day since March 11 with no COVID-19 related deaths

Tom Hanks’ new film Greyhound will be released exclusively on Apple TV+ rather than on the big screen

JULY 13

California’s two largest school districts, in Los Angeles and San Diego, announce they will be online-only this fall

JULY 14 JULY 14

Florida eclipses New York in per capita disease activity Sixth release of Atria COVID-19 response timeline

A newly published New England Journal of Medicine study on Moderna’s COVID-19 JULY 15 vaccine showed “promising” results Atria’s “Stay Safe, Stay Together” campaign, which rallies residents and families to help protect each other, launches

Atria opens a second community in South Carolina with routine COVID-19 testing and safety protocols in place at the new Atria Mount Pleasant

JULY 17 Atria Grass Valley employee Staci Tye awarded Outstanding Team Member of the Year by the California Assisted Living Association

JULY 18 Atria passes the 50,000 tests administered mark

JULY 20 JULY 20 Atria Safeguard, a new multi-part infection control training, SpaceX launches Falcon 9 rocket for launches at all U.S. communities for all employees ANASIS II mission from Cape Canaveral

JULY 21 JULY 21

The Tri-State Area (NY, CT, and NJ) announces mandatory 1,400+ Atria employees nominated for its Above & Beyond quarantine requirements for travelers arriving from 31 different states Award in July, surpassing the 800 nominations in June

JULY 22

Texas peaks in per capita disease activity

JULY 23

Major League Baseball opens its season with the Yankees beating the Nationals in a rain-shortened game JULY 29 Florida Senior Living Association recognizes Atria Willow Wood JULY 30 employee Roxan Mitchell-Powell as Employee of the Year

The head of vaccine effort is “optimistic” vaccines will be available for everybody within the year 2021

JULY 31

The National Institutes of Health invests $248.7 AUGUST 1 million to fund technology that could improve COVID-19 testing Atria surpasses 60,000 test administered mark, all in partnership with Mayo Clinic Labs

AUGUST 4 AUGUST 4 Atria manages multi-day power outages at Northeast Indianapolis Motor Speedway announces that 104th communities caused by Tropical Storm Isaias edition of the Indianapolis 500 will be run without fans

AUGUST 7 Atria upgrades PPE protocol nationwide by providing KN95/N95 masks to all U.S. employees to wear while on shift and out in public AUGUST 9

New Zealand marks 100 days without any new reported cases of local transmission of COVID-19 AUGUST 10 Around 250,000 motorcycle enthusiasts attend the New updates and features are now available on the Atria 80th annual Sturgis Motorcycle Rally in South Dakota Mobile app, including the community’s daily events calendar

AUGUST 12 Atria submits an Android version of the Atria Mobile app to AUGUST 10 the Google Play store.

New Jersey DOH issues Executive Directive requiring weekly testing of staff at long-term care facilities AUGUST 14 More than 70% of NYC students plan to do in-person or blended learning this year, according to NYC Mayor de Blasio Atria and Optum Health announce a new Resident Assistance Program, providing residents with an over-the-phone Master’s Russian health care regulator becomes first in the Level Specialist to discuss feelings of anxiety, loneliness, stress world to approve a COVID vaccine or depression

AUGUST 16 AUGUST 16

California experiences second peak in per capita Atria Retirement Canada de-escalates two buildings to “COVID disease activity Watch” protocols, reintroducing communal dining and marking the first steps down to this new level in the portfolio CDC releases data that currently, 6 months after the emergence of SARS-CoV-2, there have been no confirmed cases of SARS-CoV-2 reinfection.

AUGUST 17

Los Angeles, the second-largest U.S. school district, will test over 700,000 students and teachers for COVID-19 even as school begins remotely

New Zealand postpones its national election by four weeks as a cluster of new virus cases continues to spread in Auckland

The Democratic National Convention begins, and will be conducted almost entirely online

AUGUST 19 AUGUST 19

Australia signs a deal with drugmaker AstraZeneca to Atria prepares Florida and Texas communities for twin tropical secure a potential coronavirus vaccine that will be free storms in the Atlantic for its citizens Atria continues to closely monitor and for the Jones Notre Dame, UNC Chapel Hill, and MSU all delay/ Fire in Northern California; Emergency Management calls are change reopening plans after outbreaks of COVID-19 conducted and go-bags are prepared for a possible evacuation

AUGUST 20 The all clear issued as authorities report that the Jones Fire is under control and not currently threatening Grass Valley. AUGUST 23

US FDA announces emergency authorization for convalescent plasma to treat COVID-19 AUGUST 21 Android version of the Atria Mobile app is live in the Google Play store

AUGUST 24 AUGUST 24

The CDC forecasts that there will be over 200,000 Atria de-escalates Arizona, South Carolina, Kansas and Nevada coronavirus-related deaths in the U.S. by from HEM (High Exposure Markets) to MEM (Moderate September 19, 2020 Exposure Markets), allowing for group activities, outside visitation ( subject to local regulations) University of Hong Kong researchers report first confirmed case of COVID-19 reinfection AUGUST 25 New York sees its lowest infection rate since the beginning Atria de-escalates New Mexico and Rhode Island from of the pandemic previous "High-Exposure Market" status. Miami Dolphins announce they will allow up to 13,000 fans at home opener on September 20

The CDC changes testing guidance, no longer recommending people exposed to the virus get tested if asymptomatic. Does not apply to people who live or work in long-term care faciltiies

AUGUST 26 AUGUST 26

Moderna says vaccine data shows it is well tolerated Atria’s Houston communities safely weather Hurricane Laura across all age groups as it makes landfall as a Category 4 storm

Pope Francis will resume in-person audiences starting Atria employees complete part one of Safeguard, a new next week, with attendance capped at 500 multi-part infection control training.

The FDA grants emergency use authorization to Abbott Diagnostics for $5, 15-minute COVID-19 antigen test

AUGUST 27 AUGUST 27

White House announces purchase of 150 million Atria Mobile app passes the 6,000 download mark rapid Covid-19 tests

AUGUST 28 AUGUST 30

The University of Virginia announces that it will begin Atria testing partnership with Mayo Clinic surpasses the in-person instruction in September 80,000-tests mark

AUGUST 31 AUGUST 31

NHL reports no Covid-19 cases for 5th straight week Atria moves in 925 new residents in the U.S. and Canada in August. Florida reports lowest number of daily new coronavirus cases since June 15

SEPTEMBER 1

HHS announces Provider Relief Funds available for assisted living facilities

San Francisco to relax some Covid-19 restrictions on businesses

Gyms and museums in North Carolina can open starting Friday

$5 rapid Covid-19 tests will be sent to assisted living communities starting in mid-September

SEPTEMBER 2

AMC announces it will reopen another 140 theaters by September 4

New York reported an infection rate under 1% for 26 days

SEPTEMBER 3 SEPTEMBER 3

Fewer than 1 million Americans filed for The first residents move into Atria Highland Park in Chicago, unemployment for the first time in a month Atria’s fourth new community to open during the pandemic

Covid-19 hospitalizations in Los Angeles are at their lowest since April

SEPTEMBER 4 U.S. adds 1.4 million jobs in August, but is still down 11.5 million jobs since Covid-19 hit

SEPTEMBER 5

Up to 6,000 fans will be allowed to attend two Cleveland Browns and Cincinnati Bengals home games

Authentic wins the delayed 146th running of the Kentucky Derby, without fans in the Churchill Downs stands

SEPTEMBER 7

Florida reports lowest number of new coronavirus cases in nearly three months

2020 French Open tennis tournament to be played with fans

SEPTEMBER 8 TSA recorded America’s busiest travel day since SEPTEMBER 9 March over Labor Day weekend Atria announces a third round of Above & Beyond Award winners, selected from nearly 1,000 nominations in August, and more than 3,000 nominations since the program began SEPTEMBER 10 in June

The 2020 NFL season kicks off with pandemic protocols and reduced fan attendance SEPTEMBER 11 Atria surpasses 90,000 tests completed in partnership with Mayo Clinic Laboratories

Atria initiates testing partnership in Kentucky with Bluewater Diagnostic Laboratory

SEPTEMBER 14 Atria flu clinics begin company-wide for employees; partnership with CVS will offer residents door-to-door flu shots, including option for high dose senior vaccine

The second part of Atria Safeguard Infection Control training launches, focusing on vaccinations, co-morbidities and how to stay safe outside the community

SEPTEMBER 15 SEPTEMBER 15 Hong Kong reports no new cases of community As positivity rates in Atria markets decline, the company transmission for the first time since a third wave of de-escalates its final community out of "high exposure market" infections began in early July status. Atria communities begin to receive the $5 Abbott BinaxNow tests.

SEPTEMBER 16 SEPTEMBER 16

Jerusalem’s Great Synagogue will remain closed for the Atria Regency (Mobile, AL) safely weathers Jewish High Holidays for the first time in its history Hurricane Sally after landfall

The Big Ten Conference announces in a reversal of earlier statements that they will try to play football in 2020 beginning in October

Eli Lilly announces an experimental drug is showing promise in reducing blood levels of COVID-19 for newly infected patients

SEPTEMBER 18 SEPTEMBER 18

TSA recorded America’s busiest travel day since To date, Atria has performed 2,333 COVID-19 Virtual QE March over Labor Day weekend Reviews, with a 91% compliance rate

CDC backtracks on previous guidance regarding testing, reinforcing that people who have been exposed need to be tested regardless of the presence of symptoms SEPTEMBER 22 Seventh update to Atria timeline SEPTEMBER 24

Novavax announces it is beginning final states of testing its COVID-19 vaccine in the U.K. Another larger trial in the U.S. will begin in October.

The CDC publishes guidelines for Halloween and recommends avoiding trick-or-treating

SEPTEMBER 27 Atria surpasses 100,000 tests administered in partnership with Mayo Clinic Laboratories SEPTEMBER 28

The Department of Health and Human Services gives the assisted living industry 15 million rapid COVID-19 tests

SEPTEMBER 29

Two San Francisco Bay Area counties reopen indoor dining, movie theaters, shopping malls and places of worship with limited capacity

Older adults see promising signs in Moderna Inc.’s MRNA.O early vaccine study

SEPTEMBER 30 SEPTEMBER 30

New York City resumes some indoor dining for the first Atria welcomes 922 new residents day in months into its U.S. and Canada communities in September

OCTOBER 1

Cruise ships continue to be under a “no sail” order, banning them from U.S. ports until October 31st

OCTOBER 2

President Donald Trump announces on Twitter that he and the First Lady tested positive for COVID-19

OCTOBER 5 OCTOBER 5 In response to rapidly rising disease activity in Quebec, Atria Paris raises the city’s coronavirus alert to Retirement Canada returns its Montreal community to Level maximum, closing some businesses 4 protocols, as well as additional precautionary measures in Manitoba and Ontario

OCTOBER 6 Atria communities in U.S. begin to implement interim COVID Watch, downgrading protocols as disease activity improves while remaining on “watch” and ready to respond to any local increase in disease activity OCTOBER 8

New Jersey sees highest number of new Covid-19 cases since the end of May

A total of 23 NFL Tennessee Titan players have tested positive for COVID-19

Regeneron asks FDA for emergency use authorization for its Covid-19 antibody therapy

Zoned neighborhood shutdowns of schools and non- essential businesses take effect in the New York metro area.

OCTOBER 9

Broadway Theatres in New York City will remain closed

OCTOBER 10 Atria administers 5,623 coronavirus tests in one week

OCTOBER 11

COVID-19 hospitalizations continue to decline in Orange County, California

The NFL reschedules eight upcoming games due to positive COVID-19 cases in players and staff

OCTOBER 12 Atria escalates precautions in Tennessee, Colorado and New Mexico based on local disease activity

OCTOBER 13

Drug maker Eli Lilly pauses its treatment trial

OCTOBER 14 OCTOBER 14

Bars in Texas resume in-person service at 50% capacity Atria surpasses 110,000 COVID-19 tests

OCTOBER 15

London, Paris and Berlin tighten restrictions as COVID-19 cases rise

U.S. cases of COVID-19 surpass 8 million

OCTOBER 16

Chinese city of Qingdao tests 10 million people after a cluster of 13 COVID-19 cases was discovered

Pfizer Won’t Seek Vaccine Authorization Before Mid-November

OCTOBER 17 Atria employee outs reach 190

Atria records 7 new daily COVID-19 cases on average for the week

OCTOBER 19 Atria escalates precautions in Illinois, Indiana, Michigan and Connecticut as the “third wave” of COVID-19 in U.S. clearly emerges

Atria begins its Atria Rewards® celebration month, where over 300 frontline staff members receive Long Term Anniversary monetary gifts

OCTOBER 20 OCTOBER 20 As disease activity in the general public increases Florida reports more than 3,600 new coronavirus cases in Pennsylvania, Atria escalates its communities to “High Exposure Market” status

OCTOBER 22 OCTOBER 22

FDA approves Remdesivir as first Atria employees begin the third phase of Safeguard drug to treat COVID-19 training, which focuses on department and role-specific infection control best practices and procedures

OCTOBER 23

AstraZeneca and Johnson & Johnson restart their late-stage vaccine trials

OCTOBER 24

The U.S. records its second-highest day of cases

OCTOBER 25 OCTOBER 25

The NFL fines the Titans $350,000 Annual week-long Atria Rewards for violating safety protocols. celebrations continue on virtually this year

Melbourne, Australia records no new coronavirus cases for the first time since June

Spain declares a state of emergency and night time curfew to curb new infections OCTOBER 27 Atria escalates five states to “High Exposure Market” status: Tennessee, Kentucky, Alabama, New Mexico and Rhode Island

OCTOBER 28 Atria begins side-by-side comparison of Abbott BinaxNOW antigen tests and PCR tests at Atria Voorhees in New Jersey OCTOBER 29

Remote Marshall Islands record first confirmed COVID-19 cases

OCTOBER 30

Germany, France and Ireland enter new nationwide lockdowns, with schools continuing to meet in-person

United States reports half a million new cases in a week, the highest level to date

OCTOBER 31

New York Gov. Andrew M. Cuomo revises rules for out-of-state visitors to include testing and quarantine upon arrival

NOVEMBER 2 NOVEMBER 2

Texas surpasses California in Atria launches CarePredict technology in its first recording the highest total number of community, a pilot program using wearables to trace COVID-19 cases in the U.S resident and staff interaction

NOVEMBER 4

Illinois puts new rules in effect for indoor dining and bar service

Oxford University and AstraZeneca say there is a chance that results from COVID-19 vaccine trials could be ready by Christmas 2020

NOVEMBER 7

Joe Biden declared winner of the 2020 presidential election

NOVEMBER 9

Initial reports indicate Pfizer’s COVID-19 vaccine shows ~90% effectiveness in trials

New Jersey announces new restrictions targeting bars, restaurants and indoor sports facilities.

Eli Lilly’s antibody treatment receives emergency authorization from the FDA

The U.S. passes 10 million coronavirus cases

NOVEMBER 10 NOVEMBER 10 CDC updates its guidance to say that masks Atria escalates its Michigan communities to can help protect the wearer, not just those “High Exposure Market” status, based on the around them, from coronavirus infection state’s growing disease dynamics

NOVEMBER 11 NOVEMBER 11 The Los Angeles Lakers ban fans from Atria begins proactive surveillance testing of resident attending home games at Staples Center populations weekly in both New York and California, until further notice as third wave grows to include coastal areas

NOVEMBER 12 NOVEMBER 12

California becomes the second state to record Atria CEO John Moore & Mayo Clinic Labs Dr. one million coronavirus cases, after Texas Binnicker, Mayo Clinic Labs Chief Virologist, conduct the first of two planned Virtual Town Halls, this one Passengers on the first cruise ship to return to exclusively for Atria Care Staff the Caribbean test positive for Covid-19

NOVEMBER 14 Atria’s COVID-19 disease activity increased by 170% over the previous month

Atria records 300 employee outs, up 60% from mid-October

Atria has conducted 140,000 COVID-19 tests

NOVEMBER 16 NOVEMBER 16 In advance of the Thanksgiving holiday, Atria Daily cases have doubled in the previous 10 days in California recommends residents celebrate safely in the community, prepares additional testing and issues Moderna says its COVID-19 vaccine is 95% effective guidance to employees

NOVEMBER 18 NOVEMBER 18

Pfizer and BioNTech complete phase 3 of their vaccine Mayo Clinic Laboratories President Dr. William Morice, trial and say results show it to be 95% effective MD, PhD joins Atria CEO John Moore for a second Virtual Town Hall that is made available to Atria residents New York City closes public schools after the city and families as well as the general public to discuss the reaches a 3 percent test positivity rate state of the pandemic, progress on the vaccines and safety for the holidays FDA authorizes the first at-home coronavirus test

NOVEMBER 19

In its first briefing since August, the CDC urges Americans to not travel for Thanksgiving

The U.S. records a new daily high of COVID-19 cases

NOVEMBER 20 NOVEMBER 20 Atria escalates Arizona to “High Exposure Market” status Pfizer and BioNTech request emergency use authorization for their coronavirus vaccine from the Food and Drug Administration

NOVEMBER 21

The U.S. tops 12 million cases of the virus since the pandemic began

California’s nighttime curfew goes into effect for purple tier counties to curb spiking COVID-19 cases

NOVEMBER 22 NOVEMBER 22 Ahead of the Thanksgiving holiday, U.S. vaccine chief says the first Americans could be Atria conducts 9,173 coronavirus tests in one week vaccinated as early as Dec. 11

California’s daily new cases nearly triple since the beginning of November

NOVEMBER 23 NOVEMBER 23

New York City tri-state area Amid escalating cases nationwide, Atria jointly surpasses 1 million Covid-19 cases strongly urges residents to stay safe in their communities for Thanksgiving 2020 NY and CA are among several other states to issue rules requiring residents to quarantine after returning from holiday celebrations

NOVEMBER 25

More than 1.07 million people passed through U.S. airport security checkpoints, the most in one day since March 16

NOVEMBER 26

The number of COVID-19 patients in U.S. hospitals hit a record for the 17th straight day

NOVEMBER 27

On Black Friday, America’s largest retailer, Walmart, extends holiday sales over three weekends

NOVEMBER 29

Santa Clara County, California health officials ban the San Francisco 49ers from playing games and holding practice for at least three weeks

New Jersey sees an average of more than 4,000 new COVID-19 cases a day and hospitalizations increase 60% in the last two weeks

NOVEMBER 30 NOVEMBER 30

In California, L.A. County’s stay at home order goes Atria begins pilot of BD Veritor point-of-care COVID-19 into effect and will last until Dec. 20th rapid antigen testing at select NY communities

New York Governor Cuomo announces the state Atria’s New Jersey communities begin the state’s will use hospitalizations to identify cluster zones and pilot testing program, testing all staff every other implement closures day, using BinaxNOW Rapid Antigen tests

Moderna becomes the second pharmaceutical company to apply for emergency use authorization of its Covid-19 vaccine

DECEMBER 1 DECEMBER 1

CDC recommends states prioritize health care staff Atria safely moves in more than 1,770 new residents in the and long-term care facility residents (including AL) in U.S. and Canada in October and November, compared to the first group to receive the vaccine 1,474 in the same period last year, completing double tests for all move-ins

DECEMBER 2 DECEMBER 2

The CDC updates guidance on quarantining after Yahoo Finance asks Atria CEO John Moore about exposure, shortening the period from 14 days to 10 days COVID-19 testing and vaccine

The U.K. is the first country to approve the Pfizer/BioNTech COVID-19 vaccine

DECEMBER 4 Atria sets a new milestone, conducting more than 12,000 tests this week.

DECEMBER 5 Atria employee outs increased to 500 this week, up from 300 outs in mid-November

The average new daily cases at Atria communities increased to 39 cases/day this week, up from only 7 new cases/day

DECEMBER 6 DECEMBER 6 The U.S. marks the fifth consecutive Atria surpassess 160,000 tests administered in day of more than 100,000 hospitalizations partnership with Mayo Clinic Laboratories

DECEMBER 7 DECEMBER 7

The New York City school system reopens elementary Atria gears up for vaccine rollout with its Executive schools shifting away from the 3% positivity threshold Directors attending a virtual seminar with CVS to prepare for the rollout of the COVID-19 vaccine

DECEMBER 8 DECEMBER 8 Atria escalates North and South Carolina to The first person receives a COVID-19 vaccine in the U.K “High Exposure Market” status based on local disease dynamics

DECEMBER 10

Pfizer’s COVID-19 vaccine is granted Emergency Use Authorization by the FDA DECEMBER 13 Atria begins a testing pilot in Florida communities using Abbott BinaxNow rapid tests.

DECEMBER 14 DECEMBER 14

California administers the first Atria McCandless in Pittsburgh officially opens COVID-19 vaccinations at Los Angeles Medical Center

Indoor dining shuts down again in New York City.

DECEMBER 15

The FDA confirms Moderna’s vaccine is 94% effective from its trial of 30,000 people

DECEMBER 17

Public health agencies across U.S. states and the world issue guidance for Christmas holidays including stay at home orders and quarantine travel guidelines

DECEMBER 21 DECEMBER 21 Atria CEO John Moore leads by example by U.S. President-elect Joe Biden visiting Atria Springdale in Louisville, KY to join receives his initial dose of company’s very first residents and staff in “sleeving COVID-19 vaccine up” to receive the COVID-19 vaccination. Atria Springdale was among the state’s first assisted living communities to receive the vaccine

DECEMBER 22

Taiwan breaks the world’s longest virus-free streak by recording its first COVID-19 case in more than 250 days

DECEMBER 23

California passes 2 million COVID-19 cases, doubling the state’s total in six weeks

DECEMBER 26 DECEMBER 26

Worldwide COVID-19 cases top 80 million For states which Atria operates in, the average number of new cases this week in the general public increased by 200% over the second wave peak The first Canadian cases of the new variant of COVID-19 are confirmed Atria’s disease activity among staff and residents increased to 60 new cases/day this week- a 285% increase from 15 new cases/day during the height of the second wave

DECEMBER 27

With holiday travel, U.S. airports record the busiest day since mid-March

DECEMBER 28

New York state reaches its highest positivity rate since May

DECEMBER 29 DECEMBER 29

California extends stay-at-home Atria surpasses 200,000 tests administered in orders in Central Valley and Southern regions partnership with Mayo Clinic Laboratories as Atria combats third wave

DECEMBER 30 DECEMBER 30

The second U.S. case of the new virus Atria Almaden in San Jose officially opens strain is confirmed in California

The U.K. approves the Oxford University/ AstraZeneca coronavirus vaccine

DECEMBER 31 Atria reaches more than 400 vaccinations of residents and staff before the new year

JANUARY 5 Atria launches an online Vaccine Clinic tracker to keep residents and families updated on when the vaccine comes to each Atria community JANUARY 6

The European Union gives its final approval for Moderna’s COVID vaccine

JANUARY 7 JANUARY 7 Atria completes initial vaccinations at more The U.K. announces than 20 communities, with more than 100 mandatory COVID-19 testing vaccination clinics scheduled. for all international arrivals

JANUARY 9

Quebec institutes province-wide curfew to combat surging COVID-19 cases

JANUARY 11 Atria is the first large senior housing operator (and among the nation’s first companies) to announce that COVID-19 vaccination will be required for all employees

Atria administers its first second doses of the vaccine to residents and staff at Atria Springdale in Louisville, KY

JANUARY 12

The NBA puts more rules in place to protect against coronavirus including no handshakes and requiring quarantine

CDC announces a requirement for all air travelers to U.S. to show negative coronavirus test

JANUARY 15 Atria rolls out COVID-19 vaccination requirement for all private duty aides (PDAs), agency staff members and vendors who lease space in our communities by May 1, 2021

More than 5,000 vaccine doses administered at Atria’s U.S. communities as part of the company’s “Sleeve Up” campaign. The campaign features posters, t-shirts, videos, and social media to encourage residents and employees to participate in vaccine clinics

JANUARY 16

Los Angeles is the first county to hit 1 million Covid-19 cases

JANUARY 17

The Australian Open quarantines 72 tennis players after testing positive after traveling

JANUARY 18

California is the first state to top more than 3 million COVID-19 cases

JANUARY 21

L.A. County begins administering vaccines to residents over 65 years old

JANUARY 22 Vaccine clinics are scheduled in 90% of Atria’s U.S. communities

Atria surpasses more than 12,000 COVID-19 vaccine doses administered

JANUARY 24

The U.S. marks more than 25 million coronavirus cases, more than a quarter of the world’s virus cases

JANUARY 25 JANUARY 25 Atria Newport Beach opens after extensive redevelopment Scientists identify a new virus variant in California

JANUARY 26 Atria surpasses 260,000 tests administered in partnership with Mayo Clinic Laboratories

JANUARY 28

NBA’s Miami Heat open a new season with in-person fans and coronavirus-sniffing dogs

JANUARY 30 JANUARY 30

The average number of new daily COVID-19 cases The average number of new daily COVID-19 cases at this week in the general public increased by 730% Atria this week increased by 170% compared to the compared to the 2nd wave’s peak 2nd wave’s peak

JANUARY 31 Atria administers nearly 45,000 coronavirus tests in January 2021, bringing total number of tests to more than 258,700

FEBRUARY 1 FEBRUARY 1

The CDC requires face masks on all public transportation Atria Springdale in Louisville, KY, becomes Atria’s first community to complete its series of three vaccination clinics, conducted in partnership with CVS Health.

More than 19,000 Atria residents and staff have received their first COVID-19 vaccine

FEBRUARY 2 FEBRUARY 2 Atria announces that the COVID-19 vaccine will be The number of hospitalizations falls for the second required of all of its Canadian employees, personal consecutive month in the U.S. support workers (PSWs) and vendors who lease space in Canadian communities

FEBRUARY 4 FEBRUARY 5 Atria’s “Sleeve Up” campaign hits a milestone - more than half of the total residents and staff in the “Atria Johnson & Johnson submits an emergency use authorization world” have received at least their first dose of the to the CDC for its one dose COVID-19 vaccine COVID-19 vaccine

FEBRUARY 9

Worldwide COVID-19 cases decline 17%, according to the WHO

The FDA grants emergency use authorization to Eli Lily’s second monoclonal antibody treatment

FEBRUARY 13 Atria’s 7-day average of new daily cases fell 66% over the past 2 weeks.

Atria surpasses 275,000 COVID-19 tests in its ongoing collaboration with Mayo Clinic Laboratories

FEBRUARY 14 Atria CEO John Moore issues his 19th annual Valentine’s Day poem to Atria staff, sharing with the extended Atria world (for the first time) how Atria is committed to keeping COVID at bay

FEBRUARY 15 FEBRUARY 15

The U.K. implements a mandatory quarantine period for Atria rolls out its first set of de-escalation protocols travelers from countries with coronavirus variants across its 185 U.S. communities

FEBRUARY 17 Atria announces that all new residents moving into its communities will be required to receive the COVID-19 vaccination as soon as it is available to them

FEBRUARY 19 Atria residents and staff have received nearly 39,000 doses of the COVID-19 vaccine FEBRUARY 22

The U.S. surpasses half a million coronavirus related deaths

FEBRUARY 23

Los Angeles County resumes vaccinations at large scale venues including Dodger Stadium

FEBRUARY 24 FEBRUARY 24

Food and Drug Administration staff endorsed Johnson & Vaccinated residents at Atria’s six Kentucky communities Johnson’s one-shot product for emergency use are able to resume limited indoor visitation with vaccinated, or recently tested, family members

FEBRUARY 25 Atria announces expansion of Atria Retirement brand with forthcoming management of 21 new U.S. communities across nine states

Case mortality among Atria residents continues its decline and approaches lowest levels of the pandemic at ~7%.

Atria’s Texas communities conduct a round of proactive testing for all nonvaccinated residents, PDAs and staff following a series of winter storms that knocked out power and water to some extent in all of them

MARCH 1 MARCH 1

The FDA authorizes a second at-home coronavirus antigen test Atria records 6,398 tests per day in the previous week, a 37% decline since January 2021

The U.S. records 1.5 million tests per day in the previous week, a 26% decline since January 2021

MARCH 2

NY State Department of Health allows residents to have visitors in their apartments provided a building has not had a positive test in 14 days

MARCH 3

The U.S. administers 2 million vaccine doses in a single day, the highest yet

MARCH 4 Atria Mobile App debuts two new capabilities – easy viewing of a community’s culinary menus for the week ahead, and an ability to navigate to a community’s online visitation booking platform

MARCH 7 Atria’s “Sleeve Up” COVID-19 vaccine campaign continues, creating vaccinated “bubbles” in Atria communities with more than 92% of residents and 86% of staff committed to vaccinations

MARCH 8 MARCH 8

Fully vaccinated individuals can gather Atria completes all second vaccination clinics at Atria Park without masks, per new CDC guidance of Sierra Pointe in Arizona, continues on track to complete all vaccine clinics by the first week in April

MARCH 9 Residents at Atria’s four Georgia communities are able to host in-apartment visits

MARCH 10

CDC adopts new CMS standards for visitation at nursing homes, allowing vaccinated residents to have physical contact with visitors.

CDC updates work restrictions for healthcare personnel, no longer requiring personnel who have been fully vaccinated to quarantine after an exposure

MARCH 12 Atria’s New York communities resume in-person tours, subject to certain NY DOH parameters

MARCH 14 Atria’s “Sleeve Up” COVID-19 vaccine campaign continues, with more than 93% of residents and 88% of staff committed to vaccinations

MARCH 15 MARCH 15

CA Department of Social Services issues updated Atria suspends optional surveillance testing program, and guidance allowing for the use of rapid antigen tests pivots more of remaining testing to Abbot BinaxNow rapid to satisfy the state’s testing mandate antigen tests

MARCH 16

Moderna begins studying its vaccine in children under 12 years old.

MARCH 18 MARCH 18

NCAA’s March Madness begins with limited More than 50,000 vaccine doses administered to Atria capacity and regular testing since canceling the residents and staff 2020 tournament

MARCH 19 MARCH 19

CDC updates its social distancing guidelines for schools reopening Atria surpasses 300,000 COVID-19 tests to three feet administered through its collaboration with Mayo Clinic Laboratories & Dascena

CA Department of Social Services issues updated guidance allowing for expanded visitation and dining options at Residential Care Facilities for the Elderly

MARCH 21 Atria’s “Sleeve Up” COVID-19 vaccine campaign continues, with more than 93% of residents and 89% of staff committed to vaccinations.

MARCH 22 MARCH 22

New York City public high schools resume in-person instruction Residents at many of Atria’s California communities are now able to host in-apartment visits, where local authorities permit

Residents at Atria’s two South Carolina communities are able to host in-apartment visits

MARCH 23

Florida Division of Emergency Management rescinds all orders that had limited visitation at assisted living facilities and skilled nursing facilities

San Francisco marks its lowest rate of COVID-19 cases since March 2020

MARCH 25 MARCH 25

NY State Department of Health expands visitation, Atria prepares for upcoming Passover and Easter dining and activities in light of the effectiveness of holidays by notifying fully vaccinated residents that the vaccine and needs of the residents they can leave for holiday gatherings and return without self-quarantine or testing requirements, MARCH 26 where states permit

California plans to expand vaccine eligibility to everyone by April 15

MARCH 29

Pfizer, Moderna vaccines are 90% effective in preventing coronavirus infections, per a new CDC study

MARCH 30

New York expands vaccine eligibility for all above 30 years MARCH 31 old, and plans for a second roll out for all over 16 years old Atria moves-in 1,052 new residents in its U.S. and by April 6 Canada communities in March.

APRIL 5 Atria completes its final in-community vaccination clinic at Atria Park of Sierra Pointe in Scottsdale, Arizona.