Welcome to our dedicated page for Southern SEC filings (Ticker: SO), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
The Southern Company's SEC filings document the parent company's registered securities and the disclosure record for major utility subsidiaries, including Alabama Power Company, Georgia Power Company, Mississippi Power Company, Southern Power Company and Southern Company Gas. Combined Form 8-K reports cover material events for one or more registrants, while current reports identify common stock, junior subordinated notes, senior notes and corporate units listed on the New York Stock Exchange.
The filing record includes underwriting agreements and capital-markets transactions, amendments to current reports, proxy materials, board and committee matters, executive compensation disclosures and shareholder voting information. These filings also frame governance, capital structure and operating disclosures for an energy company with regulated electric utilities, natural gas distribution businesses, competitive generation, distributed energy solutions, fiber optics and telecommunications services.
The Southern Company filed a Form 144 reporting a proposed sale of 100 shares of Common Stock (CUSIP 1127301098). The shares are linked to a Performance Stock Unit vest dated 02/07/2024 and were reported sold in the past three months on 05/01/2026 by Matthew M. Kim. The broker listed is Merrill Lynch (3455 Peachtree Road NE, Atlanta).
The Southern Company filed a Form 144 reporting a proposed sale of 100 shares of Common Stock (CUSIP 1127301098). The shares are linked to a Performance Stock Unit vest dated 02/07/2024 and were reported sold in the past three months on 05/01/2026 by Matthew M. Kim. The broker listed is Merrill Lynch (3455 Peachtree Road NE, Atlanta).
Southern Company Comptroller Matthew M. Kim reported a small insider sale of common stock. On June 1, 2026, he completed an open-market sale of 100 shares of Southern Company Common Stock at $91.16 per share.
After this sale, Kim directly holds 6,688 shares of Southern Company Common Stock and indirectly holds 1,212.1903 shares through a 401(k) plan. The transaction size is modest relative to his reported holdings and appears as routine portfolio activity.
Southern Company Comptroller Matthew M. Kim reported a small insider sale of common stock. On June 1, 2026, he completed an open-market sale of 100 shares of Southern Company Common Stock at $91.16 per share.
After this sale, Kim directly holds 6,688 shares of Southern Company Common Stock and indirectly holds 1,212.1903 shares through a 401(k) plan. The transaction size is modest relative to his reported holdings and appears as routine portfolio activity.
Southern Company Chairman, President & CEO Christopher C. Womack reported compensation-related share activity. He exercised performance restricted stock units into 6,898 shares of Southern Company common stock, with 3,414 shares withheld to cover required state and federal tax obligations. Following these transactions, he holds 213,449.2496 shares directly and 2,603.3794 shares indirectly through a 401(k) plan.
The Southern Company reported the results of its Annual Meeting of Stockholders held on May 13, 2026. Stockholders elected twelve director nominees, each receiving about 97% to 99% of votes cast. For example, Janaki Akella received 784,876,449 votes for, or 98.68% of votes cast, and John M. Turner, Jr. received 787,367,826 votes for, or 99.00% of votes cast.
The filing also lists several other stockholder voting results on ten matters overall, with detailed counts for votes for, votes against, abstentions, and broker non-votes. In addition, the company filed as exhibits a Certificate of Amendment and a Restated Certificate of Incorporation, each dated and effective May 13, 2026.
The Southern Co. ownership disclosure: Capital World Investors reports beneficial ownership of 63,022,016 shares of Common Stock, representing 5.6% of the 1,125,750,586 shares believed outstanding (positions stated in the filing as of the reporting period). The filer reports 62,527,269 shares of sole voting power and 63,022,016 shares of sole dispositive power. The filing notes certain convertible preferred instruments and exchangeable debt that were converted to common share equivalents in the disclosed total.
Southern Company comptroller Matthew M. Kim reported an open-market sale of Southern Company Common Stock. He sold 100 shares at $96.57 per share. After this sale, he directly owns 6,788 shares of Southern Company Common Stock and also holds 1,212.1903 shares indirectly through a 401(k) plan.
Southern Co. affiliate filed a Form 144 disclosing a proposed sale of 100 shares of Common Stock to be sold on the NYSE. The filing notes the securities arose from a Performance Stock Unit vest dated 02/07/2024 and is labeled a Compensatory Payment. The filer also reported sales of 5,123 shares on 02/24/2026 for $487,453.45.
Southern Co/The reports that Vanguard Capital Management holds 83,145,596 shares of Common Stock, representing 7.42% of the class. The filing states Vanguard has sole dispositive power over 83,145,596 shares and sole voting power over 11,606,451 shares. The filing notes these holdings include securities held for Vanguard funds and managed accounts and identifies Vanguard Capital Management LLC and specified affiliates as the reporting entities.
Southern Company reported first-quarter 2026 net income of $1.356 billion, or $1.21 per share, essentially unchanged from $1.334 billion and $1.21 per share a year earlier. Operating revenues rose to $8.4 billion from $7.8 billion, reflecting higher wholesale electric and natural gas revenues.
On a non-GAAP basis, excluding items such as $154 million of accelerated depreciation on wind repowering, $11 million of debt extinguishment costs, and a $2 million Nicor Gas-related loss, net income was $1.486 billion, or $1.32 per share, up from $1.356 billion, or $1.23 per share. Traditional electric utilities and Southern Company Gas drove most of the earnings, while Southern Power’s reported net income declined sharply due to repowering-related charges.