X0206 3 2022-11-04 0 0001815849 ATI Physical Therapy, Inc. ATIP 0001953718 Kantz Erik C/O ATI HOLDINGS, LLC 790 REMINGTON BOULEVARD BOLINGBROOK IL 60440 true Chief Legal Officer Class A Common Stock 20985 D Class A Common Stock 23649 D Class A Common Stock 12644 D Class A Common Stock 35920 D Stock Option (right to buy) 1.74 2023-03-07 2032-03-07 Class A Common Stock 65666 D 20,985 shares of Restricted Stock were distributed from Wilco Acquisition, LP, of which 6,115 remain subject to vesting restrictions. The unvested shares vest equally on a quarterly basis each December 16, March 16, June 16 and September 16 until fully-vested on May 10, 2024, subject to continued service through the applicable vesting dates. 23,649 shares of Restricted Stock were granted and distributed from Wilco Acquisition, LP on November 23, 2021, of which 13,979 shares remain subject to vesting. The unvested shares vest equally on a quarterly basis each December 16, March 16, June 16 and September 16 until fully-vested on June 16, 2024, subject to continued service through the vesting dates. 12,644 shares of Restricted Stock Units ("RSUs") were granted on March 7, 2022. One-hundred percent (100%) of the RSUs will vest on the first anniversary of the grant date, subject to continued service through the vesting date. 35,920 shares of Restricted Stock Units ("RSUs") were granted on March 7, 2022. One-third (1/3rd) of the RSUs will vest on each of the first three (3) anniversaries of the grant date, subject to continued service through the applicable vesting dates. 65,666 Stock Options were granted on March 7, 2022. One-fourth (1/4th) of the Stock Options vest and become exercisable on each of the first four (4) anniversaries of the grant date, subject to continued service through the applicable vesting dates. /s/ John Lines, Attorney-In-Fact 2022-11-14