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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D. C. 20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
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| Date of Report (Date of earliest event reported) | September 15, 2025 |
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| Commission
File Number | | Registrant,
State of Incorporation,
Address and Telephone Number | | I.R.S. Employer
Identification No. | |
| | | | | | | | | | | | | | | | | | | | |
| 1-3526 | | The Southern Company | | 58-0690070 | |
(A Delaware Corporation)
30 Ivan Allen Jr. Boulevard, N.W.
Atlanta, Georgia 30308
(404) 506-5000
The name and address of the registrant have not changed since the last report.
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
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☐ | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) |
☐ | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) |
☐ | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) |
☐ | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) |
Securities registered pursuant to Section 12(b) of the Act:
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| Registrant | Title of each class | Trading
Symbol(s) | Name of each exchange
on which registered |
| The Southern Company | Common Stock, par value $5 per share | SO | New York Stock Exchange |
| The Southern Company | Series 2017B 5.25% Junior Subordinated Notes due 2077 | SOJC | New York Stock Exchange |
| The Southern Company | Series 2020A 4.95% Junior Subordinated Notes due 2080 | SOJD | New York Stock Exchange |
| The Southern Company | Series 2020C 4.20% Junior Subordinated Notes due 2060 | SOJE | New York Stock Exchange |
| The Southern Company | Series 2021B 1.875% Fixed-to-Fixed Reset Rate Junior Subordinated Notes due 2081 | SO 81 | New York Stock Exchange |
| The Southern Company | Series 2025A 6.50% Junior Subordinated Notes due 2085 | SOJF | New York Stock Exchange |
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
Emerging growth company ☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐
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| Item 7.01. | Regulation FD Disclosure. |
On September 15, 2025, The Southern Company (the “Company”) announced an adjustment (the “Adjustment”) to the conversion rate for its Series 2023A 3.875% Convertible Senior Notes due December 15, 2025 (the “Series 2023A Convertible Senior Notes”). The notice of the Adjustment is attached as Exhibit 99.1 to this Current Report on Form 8-K and will also be posted to the fixed income section of the Company’s investor relations website — https://investor.southerncompany.com/fixed-income/default.aspx — under the “Additional Information” heading. The Company advises that it intends to make public disclosures in this location of its website for conversion rate adjustments (if any) for the Series 2023A Convertible Senior Notes, its Series 2024A 4.50% Convertible Senior Notes due June 15, 2027, its Series 2025A 3.25% Convertible Senior Notes due June 15, 2028 and other convertible notes (if any) it issues in the future.
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| Item 9.01. | Financial Statements and Exhibits. |
| |
| (d) Exhibits. | |
| |
| 99.1 | Notice to Holders of the Series 2023A Convertible Senior Notes. |
| |
| 104 | Cover Page Interactive Data File – The cover page iXBRL tags are embedded within the inline XBRL document. |
| |
SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
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| Date: September 15, 2025 | THE SOUTHERN COMPANY
|
| By | /s/Melissa K. Caen |
| | Melissa K. Caen
Assistant Secretary |
