X0306 4 2021-03-04 0 0001771515 Grocery Outlet Holding Corp. GO 0001779703 Read S. MacGregor Jr. C/O GROCERY OUTLET HOLDING CORP. 5650 HOLLIS STREET EMERYVILLE CA 94608 1 0 0 0 Common Stock 2021-03-04 4 A 0 2821 0.00 D 5533 D Common Stock 2307975 I By Trust Common Stock 2307975 I By Trust Represents a grant of 2,821 deferred stock units that will vest in full on March 1, 2022, subject to the continued service of the reporting person through such vesting date, and, if vested, will be settled in shares of Common Stock upon the first business day of 2025. Reflects shares directly held by the Nordlingen Trust dated 1/23/2012, as amended and restated 9/17/2014 of which Mr. Read is a Trustee. Reflects shares directly held by the Redmond Trust dated 10/19/2003, as amended and restated 9/17/2014 of which Mr. Read is a Trustee. /s/ Pamela B. Burke, Pamela B. Burke, as Attorney-In-Fact 2021-03-08