144 0001916660 XXXXXXXX LIVE 0001901637 USCB FINANCIAL HOLDINGS, INC. 001-41196 2301 NW 87TH AVENUE DORAL FL 33172 (305) 715-5200 Aguilera, Luis de la Director Class A Voting Common Stock Maxim Group, LLC

300 Park Avenue 6th Floor New York NY 10022

182570 3378000.00 18257400 05/01/2026 Nasdaq Class A Voting Common Stock 04/30/2026 Option Exercise Issuer N 200000 04/30/2026 Cash Withholding Y 04/30/2026 /s/ Luis de la Aguilera