Company: SOJE
Filing Date: 2025-06-27
Form Type: 11-K
Source: 0000092122-25-000064
Chunk: 0

Company: SOUTHERN CO
Filing Date: 2025-06-27
Form: 11-K
Chunk 0
---
### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION
<div align='center'>Washington, D.C. 20549

__________</div>

#### FORM 11-K
<div align='center'>FOR ANNUAL REPORTS OF EMPLOYEE STOCK PURCHASE, SAVINGS AND SIMILAR PLANS PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

[X] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2024

OR

[ ] TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission File Number 1-3526

A. Full title of the plan and the address of the plan, if different from that of the issuer named below:</div>

### THE SOUTHERN COMPANY

### EMPLOYEE SAVINGS PLAN
<div align='center'>B. Name of issuer of the securities held pursuant to the plan

and the address of its principal executive office:</div>

### THE SOUTHERN COMPANY
<div align='center'>30 Ivan Allen Jr. Boulevard, NW

Atlanta, Georgia 30308</div>

#### THE SOUTHERN COMPANY EMPLOYEE SAVINGS PLAN

#### TABLE OF CONTENTS

#### Page
| REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM                                         
 FINANCIAL STATEMENTS AS OF DECEMBER 31, 2024 AND 2023 AND FOR THE YEAR ENDED DECEMBER 31, 2024: |     |    |     | 1 |
|:------------------------------------------------------------------------------------------------|:----|---:|:----|--:|
| Statements of Net Assets Available for Benefits                                                 |     |    |     | 2 |
| Statement of Changes in Net Assets Available for Benefits                                       |     |    |     | 3 |
| Notes to Financial Statements                                                                   |     |    |     | 4 |
| SUPPLEMENTARY SCHEDULE AS OF DECEMBER 31, 2024                                                  |     |    |     |   |
| Form 5500, Schedule H, Part IV, Line 4i - Schedule of Assets (Held at End of Year)              |     | 12 |     |   |

NOTE: All other schedules required by Section 2520.