Here are the S-3 shelf registrations from The Southern Company 2025 Series A Corporate Units (SOMN) in our archive over the last 12 months, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
An S-3 covers the shelf registration that lets an established company sell over time, so if you follow SOMN and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full SOMN filings page.
The Southern Company filed a Form S-3 shelf registration to register Common Stock, Preferred Stock, Senior Notes, Junior Subordinated Notes, Stock Purchase Contracts and Stock Purchase Units for sale from time to time after the effective date. The prospectus reserves detailed terms for later Prospectus Supplements. As context, the company reported 1,127,301,098 shares of Common Stock issued and outstanding as of March 31, 2026.