X0306 4/A 2022-02-21 2022-02-23 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 3871377 D On February 23, 2022, the Reporting Person submitted a Form 4 reporting the grant of 69,841 Restricted Stock Units under Oak Street Health's Omnibus Incentive Plan. Due to a technical error, the amount of securities beneficially owned following the reported transaction was reported twice on that form. To clarify the total amount of common stock directly owned by the Reporting Person on February 21, 2022, this amendment is being filed. /s/ Robert Guenthner, attorney-in-fact for Geoffrey Price 2022-03-09