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.
Sterling A. Spainhour Jr., identified as an officer (EVP & CLO) of Southern Company (SO), sold 2,380 shares of Southern Company common stock on 08/11/2025 at $95.02 per share. After the reported sale he directly beneficially owns 17,382 shares and also holds 6,797.1236 shares indirectly through a 401(k). No derivative transactions were reported on this Form 4.
The filing was submitted via attorney-in-fact; the disclosure shows a routine officer sale and continued direct and indirect ownership positions.
The Southern Company (SO) Form 144 notifies the market of a proposed sale of 2,380 common shares with an aggregate market value of $226,147.60. The sale is to be handled by Merrill Lynch on the New York Stock Exchange with an approximate sale date of 08/11/2025.
The securities reported were acquired as restricted stock units (RSUs) and performance stock units (PSUs) that vested in February 2025: 366 and 44 shares from RSU vesting on 02/13/2025, and 1,970 shares from PSU vesting on 02/05/2025. The filer attests they are not aware of undisclosed material adverse information and indicates the transactions are compensatory payments.
Form 4 discloses that Kimberly S. Greene, Chairman, President & CEO of Georgia Power Company (a subsidiary of The Southern Company – ticker SO), sold 13,158 SO common shares on 07/21/2025 at $95 each. The transaction totals roughly $1.25 million. Following the sale, Greene still owns 93,661 shares directly. No derivative transactions were reported.
The filing represents a routine Section 16 insider sale rather than a change in control; Greene retains ~88% of her prior stake. No other material events, option exercises or purchases are noted.
Form 4 discloses that Kimberly S. Greene, Chairman, President & CEO of Georgia Power Company (a subsidiary of The Southern Company – ticker SO), sold 13,158 SO common shares on 07/21/2025 at $95 each. The transaction totals roughly $1.25 million. Following the sale, Greene still owns 93,661 shares directly. No derivative transactions were reported.
The filing represents a routine Section 16 insider sale rather than a change in control; Greene retains ~88% of her prior stake. No other material events, option exercises or purchases are noted.
The Southern Company (SO) filed a Form 144 indicating that an affiliate intends to sell up to 13,158 common shares through Merrill Lynch, Atlanta. At the most recent market price used in the notice, the shares have an aggregate value of ≈ $1.25 million. The proposed transaction represents a negligible 0.001 % of the company’s 1.10 billion shares outstanding and is scheduled on or about 07/21/2025 on the New York Stock Exchange.
The shares were acquired on 02/13/2022 via a performance stock-unit vesting and are being sold for the filer’s own account; no sales were made in the preceding three months. The filer affirms no undisclosed material adverse information about Southern Company and makes the customary Rule 10b5-1 representation.
The Southern Company (SO) filed a Form 144 indicating that an affiliate intends to sell up to 13,158 common shares through Merrill Lynch, Atlanta. At the most recent market price used in the notice, the shares have an aggregate value of ≈ $1.25 million. The proposed transaction represents a negligible 0.001 % of the company’s 1.10 billion shares outstanding and is scheduled on or about 07/21/2025 on the New York Stock Exchange.
The shares were acquired on 02/13/2022 via a performance stock-unit vesting and are being sold for the filer’s own account; no sales were made in the preceding three months. The filer affirms no undisclosed material adverse information about Southern Company and makes the customary Rule 10b5-1 representation.
On July 10, 2025, The Southern Company (NYSE: SO) filed an 8-K announcing a planned CFO transition. Current Comptroller David P. Poroch (age 56) will become Executive Vice President & Chief Financial Officer effective July 31, 2025. He succeeds Daniel S. Tucker, who will step down the same day, continue as senior advisor to the CEO and retire on October 1, 2025. Post-retirement, Tucker will provide consulting services to Southern Company Services from Oct 1 2025–Sep 30 2027 for $300,000 cash per year. Poroch’s new-role compensation has not yet been determined; material changes will be disclosed in an amended filing. No other operational or financial metrics were included.