Company: SOJE
Filing Date: 2025-01-08
Form Type: 424B5
Source: 0000092122-25-000002
Chunk: 45

Company: SOUTHERN CO
Filing Date: 2025-01-08
Form: 424B5
Chunk 45
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 read this Prospectus and the applicable Prospectus Supplement together with the additional information under the heading “Available Information.”

### RISK FACTORS
Investing in the Company’s securities involves risk. Please see the risk factors described in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023 (the “Form 10-K”), which is incorporated by reference in this Prospectus. Before making an investment decision, you should carefully consider these risks as well as other information contained or incorporated by reference in this Prospectus.

### AVAILABLE INFORMATION
The Company has filed with the Commission a registration statement on Form S-3 (the “Registration Statement,” which term encompasses any amendments to the Registration Statement and exhibits to the Registration Statement) under the 1933 Act. As permitted by the rules and regulations of the Commission, this Prospectus does not contain all of the information set forth in the Registration Statement and the exhibits and schedules to the Registration Statement, to which reference is made.

The Company is subject to the informational requirements of the Securities Exchange Act of 1934, as amended (the “1934 Act”), and in accordance with the 1934 Act files reports, proxy statements and other information with the Commission. The Commission maintains a website that contains reports, proxy statements and other information regarding registrants including the Company that file electronically at http://www.sec.gov. Copies of certain information filed by the Company with the Commission are also available on the Company’s website at http://www.southerncompany.com. The information on the Company’s website is not incorporated by reference into this Prospectus and should not be considered to be a part of this Prospectus.

### INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
The following documents have been filed with the Commission pursuant to the 1934 Act and are incorporated by reference in this Prospectus and made a part of this Prospectus:

(a) the Form 10-K ;

(b) all information in the Company’s Definitive Proxy Statement on Schedule 14A filed on April 14, 2023 , to the extent incorporated by reference in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022 ; and

(c) the Company’s Current Report on Form 8-K dated February 1, 2024 and Current Report on Form 8-K/A dated October 16, 2023 (filed on February 6, 2024 ).

All documents filed by the Company with the Commission