X0508 4 2026-03-08 0001901637 USCB FINANCIAL HOLDINGS, INC. USCB 0001999607 Logrono Maricarmen C/O USCB FINANCIAL HOLDINGS, INC. 2301 N.W. 87TH AVENUE DORAL FL 33172 1 EVP and Chief Risk Officer 0 Class A Voting Common Stock 2026-03-08 4 F 0 197 18.45 D 15892 D Options to Purchase Class A Voting Stock 12.0500 2022-09-27 2031-09-27 Class A Voting Common Stock 15000 15000 D Includes 876 shares of restricted stock from a grant of 2,630 shares which commenced vesting at a rate of one-third per year on January 22, 2025, 3,920 shares of restricted stock from a grant of 5,880 shares which commenced vesting at a rate of one-third per year on January 21, 2026 and 6,217 shares of restricted stock which vest at the rate of one-third per year commencing on January 27, 2027. The options vested at a rate of one-third per year commencing on September 27, 2021. /s/ Robert Anderson by P.O.A. for Maricarmen Logrono 2026-03-10