X0508 4 2026-03-06 0 0001771515 Grocery Outlet Holding Corp. GO 0001779980 Wilson Steven K. C/O GROCERY OUTLET HOLDING CORP. 5650 HOLLIS STREET EMERYVILLE CA 94608 0 1 0 0 EVP, Chief Purchasing Officer 0 Common Stock 2026-03-06 4 A 0 13110 0 A 130033 D Common Stock 2026-03-09 4 S 0 5141 5.84 D 124892 D Represents fully vested shares of the Issuer's Common Stock acquired by the reporting person upon certification by the Issuer's Compensation Committee that certain performance-based vesting conditions had been satisfied with respect to performance stock units ("PSUs") granted to the reporting person on March 2, 2023. These shares were sold to satisfy the reporting person's tax withholding obligation upon vesting of RSUs previously granted. /s/ Luke D. Thompson, Luke D. Thompson, Attorney-in-Fact 2026-03-10