Exhibit 99.1 EARNINGS RELEASE USCB Financial Holdings, Inc. Reports Diluted EPS of $0.23 for Q1 2024 and announces adoption of new 500,000 share repurchase program MIAMI, FL – April 25, 2024 – USCB Financial Holdings, Inc. (the “Company”) (NASDAQ: USCB), the holding company for U.S. Century Bank (the “Bank”), reported net income of $4.6 million or $0.23 per diluted share for the three months ended March 31, 2024, compared with net income of $5.8 million or $0.29 per diluted share for the same period in 2023 ...