Company: FGBI
Filing Date: 2025-08-18
Form Type: 8-K/A
Source: 0001408534-25-000069
Chunk: 4

Company: First Guaranty Bancshares, Inc.
Filing Date: 2025-08-18
Form: 8-K/A
Chunk 4
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 return on average common equity for the three months ended June 30, 2025 and 2024 as (14.33)% and 12.16%, respectively. For the six months ended June 30, 2025 and 2024, the Original Press Release reported the return on average common equity as (11.97)% and 7.66%, respectively. The Revised Press Release reports the return on average common equity for the six months ended June 30, 2025 and 2024 as (13.31)% and 7.66%, respectively. Return on average assets is calculated by dividing annualized net income by average assets. Return on average common equity is calculated by dividing annualized net income by average common equity.

The Original Press Release reported book value per common shares as $15.31 as of June 30, 2025, compared to $17.75 as of December 31, 2024. The Revised Press Release reports book value per common share as $15.21 as of June 30, 2025, compared to $17.75 as of December 31, 2024.

The Revised Press Release is enclosed as Exhibit 99.1 to this report. The information in Exhibit 99.1 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933.

| Item 9.01   |     | Financial Statements and Exhibits    |
| (d)         |     | Exhibits                             |
| Exhibit No. |     | Description                          |
| 99.1        |     | Press Release dated August 18, 2025. |

### SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

| Date: August 18, 2025 |     | FIRST GUARANTY BANCSHARES, INC. 
 (Registrant)                    |     |                         |
|:----------------------|:----|:--------------------------------|:----|:------------------------|
|                       |     | By:                             |     | /s/Eric J. Dosch        |
|                       |     |                                 |     | Eric J. Dosch           |
|                       |     |                                 |     | Chief Financial Officer |