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Southern Co. SEC filings

In the twelve months since 23 September 2025 Southern Co. filed 27 documents with the SEC of the kinds listed here: 15 current reports (8-K), about 7 other events; 4 results of operations; 2 new financial obligation; 1 unregistered sale of equity; 1 shareholder vote; 3 quarterly reports (10-Q), 2 additional proxy materials (DEFA14A), 1 employee plan annual report (11-K), 1 shelf registration (S-3ASR), 1 conflict minerals report (SD), 1 annual report to shareholders (ARS). The latest, filed 6 August 2026: 8-K, new financial obligation, unregistered sale of equity.

FiledFormWhat it was aboutPeriod or event dateFiling
6 August 20268-KNew financial obligation, Unregistered sale of equity3 August 2026EDGAR
4 August 20268-KOther events3 August 2026EDGAR
3 August 20268-KOther events3 August 2026EDGAR
30 July 20268-KResults of operations30 July 2026EDGAR
30 July 202610-Qquarterly report30 June 2026EDGAR
26 June 202611-Kemployee plan annual report31 December 2025EDGAR
8 June 20268-KOther events8 June 2026EDGAR
5 June 2026S-3ASRshelf registrationEDGAR
20 May 2026SDconflict minerals reportEDGAR
15 May 20268-KShareholder vote13 May 2026EDGAR
5 May 2026DEFA14Aadditional proxy materialEDGAR
30 April 20268-KResults of operations30 April 2026EDGAR
30 April 202610-Qquarterly report31 March 2026EDGAR
3 April 2026ARSannual report to shareholders31 December 2025EDGAR
3 April 2026DEFA14Aadditional proxy materialEDGAR
3 April 2026DEF 14Aproxy statement13 May 2026EDGAR
23 March 2026PRE 14Apreliminary proxy13 May 2026EDGAR
19 March 20268-KOther events16 March 2026EDGAR
25 February 20268-KMaterial agreement, New financial obligation20 February 2026EDGAR
19 February 20268-KResults of operations19 February 2026EDGAR
19 February 202610-Kannual report31 December 2025EDGAR
17 February 20268-K/AOfficer or director change21 July 2025EDGAR
19 December 20258-KOther events19 December 2025EDGAR
10 December 20258-KOther events9 December 2025EDGAR
6 November 20258-KOther events3 November 2025EDGAR
30 October 20258-KResults of operations30 October 2025EDGAR
30 October 202510-Qquarterly report30 September 2025EDGAR

An 8-K is what a company files within four business days of a material event; the SEC numbers the events, and the words here are the SEC's own headings, shortened. Form 4, Form 144, 13F and Schedule 13D and 13G have their own pages. Prospectus supplements and correspondence are not listed.

Source

The company's filing index on EDGAR, read from the SEC's submissions feed.

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