Company: USCB
Filing Date: 2025-05-02
Form Type: S-3
Source: 0001193125-25-111625
Chunk: 48

Company: USCB FINANCIAL HOLDINGS, INC.
Filing Date: 2025-05-02
Form: S-3
Chunk 48
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 and therefore would hold no shares of our Class A Common Stock following the offering and hold zero percentage of the outstanding shares of our Class A Common Stock following the offering.

The number of shares shown represents the number of shares each Selling Securityholder “beneficially owns,” as determined by the
rules of the SEC. These rules generally provide that a person is the beneficial owner of securities if such person has or shares the power to vote or direct the voting of securities, or to dispose or direct the disposition of securities, or has the
right to acquire such powers within 60 days through (i) the exercise of any option, warrant or right, (ii) the conversion of a security, (iii) the power to revoke a trust, discretionary account or similar arrangement or (iv) the
automatic termination of a trust, discretionary account or similar arrangement. The percentage of beneficial ownership is based on 20,048,385 shares of our Class A Common Stock issued and outstanding as of April 25, 2025.

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The information set forth below is based on information provided by the Selling Securityholders. A Selling Securityholder may have sold, transferred or otherwise disposed of all or a portion of such Selling Securityholder’s shares of our Class A Common Stock subsequent to providing the information set forth in this table.

|                                                 |     | Shares of Class A Common 
 Stock Beneficially Owned 
 Pre-offering             |           |     |            |      |   |     | Maximum         
 Shares of Class 
 A Common        
 Stock to be     
 Offered         |           |     | Shares of Class A Common 
 Stock Beneficially Owned 
 Post-offering            |   |     |   |   |
| Name of Selling                                 
 Securityholder                                  |     | Number                   |           |     | Percentage |      |   |     | Number          |           |     | Percentage               |   |     |   |   |
| Patriot Financial Partners II, L.P.(1)          |     |                          | 3,398,640 |     |            | 17.0 | % |     |                 | 3,398,640 |     |                          | — |     | — | % |
| Patriot Financial Partners Parallel II, L.P.(1) |     |                          | 1,087,269 |     |            |  5.4 | % |     |                 | 1,087,269 |     |                          | — |     | — | % |
| Priam Capital