Southern Company (SO) SEC Filing (8-K) 2026

Browse all Southern Company SEC filings, including Annual reports (10-K), Quarterly reports (10-Q), 8-K, proxy statements (DEF 14A), and insider filings (Form 4). Access official documents by filing date, reporting period, and form type. ...more

Last updated: October 6, 2026, 2:09 AM ET

SEC Filings

Date

4

Insider ownership (buying, selling) activity

Oct 5, 2026 02:15 PM

4

Insider ownership (buying, selling) activity

Oct 5, 2026 02:14 PM

4

Insider ownership (buying, selling) activity

Oct 5, 2026 02:13 PM

4

Insider ownership (buying, selling) activity

Oct 5, 2026 02:12 PM

4

Insider ownership (buying, selling) activity

Oct 5, 2026 02:12 PM

4

Insider ownership (buying, selling) activity

Oct 5, 2026 02:12 PM

4

Insider ownership (buying, selling) activity

Oct 5, 2026 02:13 PM

4

Insider ownership (buying, selling) activity

Oct 5, 2026 02:16 PM

4

Insider ownership (buying, selling) activity

Oct 5, 2026 02:16 PM

4

Insider ownership (buying, selling) activity

Oct 5, 2026 02:15 PM

4

Insider ownership (buying, selling) activity

Oct 5, 2026 02:15 PM

4

Insider ownership (buying, selling) activity

Oct 1, 2026 04:00 PM

4

Insider ownership (buying, selling) activity

Sep 4, 2026 01:00 PM

4

Insider ownership (buying, selling) activity

Sep 3, 2026 10:00 AM

4

Insider ownership (buying, selling) activity

Aug 7, 2026 03:00 PM

8-K

Material company events (earnings, M&A, or leadership changes)

Aug 6, 2026 11:15 AM

8-K

Material company events (earnings, M&A, or leadership changes)

Aug 3, 2026 09:35 PM

4

Insider ownership (buying, selling) activity

Aug 4, 2026 10:30 AM

8-K

Material company events (earnings, M&A, or leadership changes)

Aug 3, 2026 06:51 AM

8-K

Material company events (earnings, M&A, or leadership changes)

Jul 30, 2026 08:12 AM

10-Q

Quarterly financial results and management updates

Jul 29, 2026 05:38 PM

4

Insider ownership (buying, selling) activity

Jul 2, 2026 10:16 AM

4

Insider ownership (buying, selling) activity

Jul 2, 2026 10:16 AM

4

Insider ownership (buying, selling) activity

Jul 2, 2026 10:16 AM

4

Insider ownership (buying, selling) activity

Jul 2, 2026 10:16 AM

4

Insider ownership (buying, selling) activity

Jul 2, 2026 10:15 AM

4

Insider ownership (buying, selling) activity

Jul 2, 2026 10:16 AM

4

Insider ownership (buying, selling) activity

Jul 2, 2026 02:00 PM

4

Insider ownership (buying, selling) activity

Jul 2, 2026 10:17 AM

4

Insider ownership (buying, selling) activity

Jul 2, 2026 10:17 AM

4

Insider ownership (buying, selling) activity

Jul 2, 2026 10:17 AM

4

Insider ownership (buying, selling) activity

Jul 2, 2026 10:17 AM

4

Insider ownership (buying, selling) activity

Jul 2, 2026 10:16 AM

4

Insider ownership (buying, selling) activity

Jun 29, 2026 04:00 PM

11-K

Annual performance report of employee stock plans

Jun 26, 2026 02:08 PM

424B2

Prospectus variant for specific offering structures

Jun 8, 2026 09:35 AM

8-K

Material company events (earnings, M&A, or leadership changes)

Jun 8, 2026 08:44 AM

S-3ASR

Automatic shelf registration for eligible issuers

Jun 5, 2026 11:53 AM

4

Insider ownership (buying, selling) activity

Jun 1, 2026 04:00 PM

4

Insider ownership (buying, selling) activity

May 26, 2026 04:00 PM

Southern Company (Form 8-K) 2026

Current Events / Material company events (earnings, M&A, or leadership changes)

Aug 3, 2026 06:51 AM

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