144 0002061814 XXXXXXXX LIVE 0001901637 USCB FINANCIAL HOLDINGS, INC. 001-41196 2301 NW 87TH AVENUE DORAL FL 33172 (305) 715-5200 Patriot Financial Partners GP II, LLC 10% Stockholder Class A Voting Common Stock Keefe, Bruyette & Woods, Inc.

787 7th Ave, 4th Floor New York NY 10019

50000 925000.00 18547400 04/30/2026 Nasdaq Class A Voting Common Stock 12/30/2021 Reorganization Issuer N 4405909 12/30/2021 Stock Exchange Y This Form is filed by Patriot Financial Partners GP II, L.P., Patriot Financial Partners II, L.P., Patriot Financial Partners Parallel II, L.P., Patriot Financial Partners GP II, LLC, W. Kirk Wycoff, James F. Deutsch, Ira M. Lubert and James J. Lynch, which as a group may be deemed to beneficially own greater than 10% of the outstanding shares of Class A Voting Common Stock. 04/30/2026 /s/ W. Kirk Wycoff