X0306 4/A 2021-12-17 2021-12-20 0 0001564406 Oak Street Health, Inc. OSH 0001793313 PRICE GEOFFREY M C/O OAK STREET HEALTH, INC. 30 W. MONROE ST., SUITE 1200 CHICAGO IL 60603 1 1 0 0 Chief Innovation Officer Common Stock, $0.001 par value 2021-12-17 4 M 0 4761 21.00 A 3801488 D On December 20, 2021, the Reporting Person filed a Form 4 reporting the exercise of stock options. Due to a typographical error, the number of shares of common stock reported to have been acquired by the Reporting Person as a result of such stock option exercise was 4,716. The actual number of shares acquired as a result of that exercise was 4,761 resulting in the Reporting Person's shares of common stock owned being underreported by 45 shares. This amendment is being filed to correct that error. /s/ Robert Guenthner, attorney-in-fact for Geoffrey Price 2022-03-09