144 0001916995 XXXXXXXX LIVE 0001901637 USCB FINANCIAL HOLDINGS, INC. 001-41196 2301 NW 87TH AVENUE DORAL FL 33172 (305) 715-5200 Abadin, Ramon Director Class A Voting Common Stock Maxim Group, LLC

300 Park Avenue 6th Floor New York NY 10022

9000 162000.00 18263900 05/14/2026 Nasdaq Class A Voting Common Stock 05/14/2026 Option Exercise Issuer N 9000 05/14/2026 Cash Withholding Y 05/14/2026 /s/ Ramon Abadin