X0306 4 2022-08-09 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 2022-08-09 4 S 0 40000 29.0782 D 1153270 I By Price-Uhl Living Trust Common Stock, $0.001 par value 3874863 D The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person. The Reporting Person undertakes to provide to Oak Street Health, Inc., any security holder of Oak Street Health, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the ranges set forth in footnote (2) to this Form 4. Transactions within a $1.00 price range are reported in accordance with the June 25th 2008 SEC No-Action letter. Minimum price was $28.905 and maximum price was $29.50. /s/ Robert Guenthner, attorney-in-fact for Geoffrey Price 2022-08-10