Aida Levitan's Stock Transactions and Power of Attorney

The filing details transactions involving Aida Levitan, a director of USCB Financial Holdings, Inc. On September 12, 2025, Levitan disposed of 7,500 stock options with an exercise price of $7.50 and 2,500 stock options with the same exercise price. Additionally, Levitan acquired 7,500 and 2,500 shares of Class A Voting Common Stock at $7.50 per share. The filing also includes a Power of Attorney document, appointing Luis de la Aguilera, Robert Anderson, and Roberto Diaz as attorneys-in-fact to execute Forms 3, 4, and 5 on behalf of Levitan in compliance with Section 16(a) of the Securities Exchange Act of 1934. The Power of Attorney was executed on January 22, 2024, and remains in effect until Levitan is no longer required to file these forms.