Company: SOJE
Filing Date: 2025-06-27
Form Type: 11-K
Source: 0000092122-25-000064
Chunk: 3

Company: SOUTHERN CO
Filing Date: 2025-06-27
Form: 11-K
Chunk 3
---
| Additions                                             
 Contributions:                                        |     |   |               |
|:------------------------------------------------------|:----|:--|--------------:|
| Participant                                           |     | $ |   285,051,682 |
| Participant rollovers                                 |     |   |    21,662,125 |
| Employer                                              |     |   |   135,260,890 |
| Total contributions                                   |     |   |   441,974,697 |
| Interest income on notes receivable from participants |     |   |     8,001,231 |
| Investment Income                                     |     |   |               |
| Interest and dividends                                |     |   |   125,777,622 |
| Net appreciation in fair value of investments         |     |   | 1,204,236,163 |
| Total investment income                               |     |   | 1,330,013,785 |
| Total additions                                       |     |   | 1,779,989,713 |
| Deductions                                            |     |   |               |
| Benefit payments                                      |     |   |   869,429,430 |
| Administrative expenses                               |     |   |     1,665,856 |
| Total deductions                                      |     |   |   871,095,286 |
| Net increase                                          |     |   |   908,894,427 |
| Net assets available for benefits:                    |     |   |               |
| Beginning of year                                     |     |   | 8,391,194,071 |
| End of year                                           |     | $ | 9,300,088,498 |

<div align='center'>See accompanying notes to financial statements.

3</div>

#### Southern Company Employee Savings Plan

### Notes to Financial Statements

#### 1. Description of the Plan

#### General
The following description of The Southern Company Employee Savings Plan (the “Plan”) is provided for general information purposes only. Readers should refer to the Plan and other documents relating to the Plan for more complete information.

The Plan is a defined contribution plan administered by the Southern Company Affiliates’ Benefits Administration Committee (the “Committee”), as designated in the Plan. The Committee is appointed by the Board of Directors of Southern Company Services, Inc. (the “Plan Sponsor”). The Plan covers substantially all employees and retirees of the following subsidiaries of The Southern Company (the “Company”): Alabama Power Company, Georgia Power Company, Mississippi Power Company, Southern Company Services