X0407 4 2023-05-02 0001901637 USCB FINANCIAL HOLDINGS, INC. USCB 0001685230 Anderson Robert B. C/O USCB FINANCIAL HOLDINGS, INC. 2301 N.W. 87TH AVENUE MIAMI FL 33172 1 Executive VP and CFO 0 Class A Voting Common Stock 2023-05-02 4 P 0 3000 9.50 A 25051 D Options to Purchase Class A Voting Common Stock 8.7500 2021-09-10 2030-09-10 Class A Voting Common Stock 30000 30000 D Options to Purchase Class A Voting 12.0500 2022-09-27 2031-09-27 Class A Voting Common Stock 60000 60000 D Includes the grant of 8,051 shares of restricted stock which vest at a rate of one-third per year commencing on the first anniversary of the date of grant, which was 3/8/2023. The options vest at a rate of one-third per year commencing on the first anniversary of the date of grant, which was 9/10/2020. The options vest at a rate of one-third per year commencing on the first anniversary of the date of grant, which was 9/27/2021. /s/ Jalal Shehadeh by P.O.A. for Robert B. Anderson 2023-05-03