X0508 4 2025-01-22 0001901637 USCB FINANCIAL HOLDINGS, INC. USCB 0001916662 COLLAZO ANDRES C/O USCB FINANCIAL HOLDINGS, INC. 2301 N.W. 87TH AVENUE DORAL FL 33172 1 Executive VP, Operations & IT 0 Class A Voting Common Stock 2025-01-22 4 F 0 281 18.27 D 29395 D Options to Purchase Class A Voting Stock 12.0500 2022-09-27 2031-09-27 Class A Voting Common Stock 30000 30000 D Includes 1,897 shares of restricted stock of which 949 shares vest on January 22, 2026 and 948 shares vest on January 22, 2027, 3,526 shares of restricted stock which commenced vesting at a rate of one-third per year on March 8, 2024, 15,000 shares of restricted stock which vest at a rate of one-third per year commencing on October 28, 2025 and 6,064 shares of restricted stock which vest at a rate of one-third per year commencing on January 21, 2026. The stock options vest at the rate of one-third per year commencing on September 27, 2022. /s/ 2025-01-22