Company: SOJE
Filing Date: 2025-05-13
Form Type: DEFA14A
Source: 0000092122-25-000046
Chunk: 1

Company: SOUTHERN CO
Filing Date: 2025-05-13
Form: DEFA14A
Chunk 1
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 13 Directors                                                                                                                |     | FOR each director nominee |
| Item #2                                                    
 Say on Pay                                                 |     | Advisory vote to approve executive compensation                                                                                   |     | FOR                       |
| Item #3                                                    
 Ratify Appointment of Auditors                             |     | Ratify the appointment of Deloitte & Touche as our independent registered public accounting firm for 2025                         |     | FOR                       |
| Item #4                                                    
 Approve Amendment to Restated Certificate of Incorporation |     | Approve an amendment to the Restated Certificate of Incorporation to reduce the supermajority vote requirement to a majority vote |     | FOR                       |

| Items #5-8            
 Stockholder Proposals |     | Vote on four stockholder proposals:                                             
 •Simple Majority Vote                                                           
 •Disclose Assumptions Underlying Continued Reliance on Fossil Fuel-Based Energy 
 •Conduct a Net Zero Audit                                                       
 •Report on Respecting Workforce Civil Liberties                                 |     | AGAINST each proposal |

If you are a stockholder, as many of our employees are, you should have already received your proxy materials along with instructions on how to vote your shares. The proxy statement contains information about the company, the upcoming annual meeting, and the items that are up for a vote.

You can visit the annual meeting website to review and download copies of the proxy statement and annual report and find a link to vote your proxy. Stockholders, including employee stockholders, can vote online at www.proxyvote.com until May 20.

Depending on how you hold your shares – 401(k) plan, bank, broker, etc. – it is possible that you received an electronic communication regarding delivery of your proxy materials, a Notice of Internet Availability of proxy materials with instructions regarding how to access proxy materials online, or a full package of proxy materials in the mail. If you hold Southern Company stock in multiple accounts, you may have received voting instructions in a combination of these methods. I encourage you to vote your shares in all of your accounts.

Our virtual annual meeting will begin at 10:00 a.m. ET on Wednesday, May 21 and can be accessed online at http://www.virtualshareholdermeeting.com/SO2025 .

If you have any questions about the proxy statement or the voting process, please contact Patrick Becker in the Office of General Counsel at 404-506-5122.

Thank you for considering these important company matters and voting your shares.

Sterling Spainhour

EVP, Chief Legal Officer