Company: SOJE
Filing Date: 2025-03-31
Form Type: PRE 14A
Source: 0000092122-25-000032
Chunk: 2

Company: SOUTHERN CO
Filing Date: 2025-03-31
Form: PRE 14A
Chunk 2
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 our 2025 annual meeting materials. At the annual meeting website, you can find an overview of the items to be voted, the proxy statement and the annual report to read online or to download, as well as a link to vote your shares.

Even if you plan to attend the virtual annual meeting, please vote as soon as possible by internet or by telephone or, if you received a paper copy of the proxy form by mail, by signing and returning the proxy form.

| Vote by mail                                                                                                                                       
 If you received a paper copy of the proxy form by mail, you can mark, sign, date and return the proxy form in the enclosed, postage-paid envelope. |     | Vote by internet or telephone                                                                                    
 Voting by internet or by telephone is fast and convenient, and your vote is immediately confirmed and tabulated. 
 Internetwww.proxyvote.com(24/7)                                                                                  
 Telephone1-800-690-6903 (24/7)                                                                                   |

By Order of the Board of Directors
April 11, 2025

Important Notice Regarding the Availability of Proxy Materials for the 2025 Annual Meeting of Stockholders to be held on May 21, 2025: The proxy statement and the annual report are available at investor.southerncompany.com .

The 2025 annual meeting will be held entirely online via live webcast. This virtual format will leverage the latest technology to provide expanded access to all stockholders, regardless of physical location, and is designed to ensure that stockholders have the same rights and opportunities throughout the virtual meeting as they would at an in-person meeting. Stockholders will be able to participate in the virtual annual meeting, vote and submit questions from any location via the internet by logging in at www.virtualshareholdermeeting.com/SO2025 and entering the 16-digit control number on your proxy card, voting instruction form or Notice of Internet Availability. Stockholders who do not receive a 16-digit control number should consult their voting instruction form or Notice of Internet Availability and may need to obtain a legal proxy in advance of the virtual annual meeting in order to participate. See page 93 for more information about the virtual annual meeting.

#### 2Southern Company2025 Proxy Statement
Letter from our Chairman and Chief Executive Officer

Dear Fellow Stockholders:

You are invited to attend the Southern Company 2025 Annual Meeting of Stockholders at 10:00 a.m., ET, on Wednesday, May 21, 2025. We will be conducting the annual meeting online via live webcast