Southern Company
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Southern Company (SO) SEC Filings
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
Southern Company Reports: Annual 10-K, Quarterly 10-Q & SEC Filings
SEC Filings
Date
2026
SC 13G/A
Updated passive ownership disclosure
PRE 14A
Preliminary proxy statement filed for SEC review
8-K
Material company events (earnings, M&A, or leadership changes)
4
Insider ownership (buying, selling) activity
4
Insider ownership (buying, selling) activity
424B2
Prospectus variant for specific offering structures
424B5
Shelf offering prospectus with final pricing terms
FWP
Free writing prospectus related to a securities offering
4
Insider ownership (buying, selling) activity
4
Insider ownership (buying, selling) activity
SC 13G/A
Updated passive ownership disclosure
4
Insider ownership (buying, selling) activity
8-K
Material company events (earnings, M&A, or leadership changes)
4
Insider ownership (buying, selling) activity
10-K
Annual financial results and management updates
8-K
Material company events (earnings, M&A, or leadership changes)
8-K/A
Corrected company event report
4
Insider ownership (buying, selling) activity
4
Insider ownership (buying, selling) activity
4
Insider ownership (buying, selling) activity
4
Insider ownership (buying, selling) activity
4
Insider ownership (buying, selling) activity
4
Insider ownership (buying, selling) activity
4
Insider ownership (buying, selling) activity
4
Insider ownership (buying, selling) activity
4
Insider ownership (buying, selling) activity
4
Insider ownership (buying, selling) activity
4
Insider ownership (buying, selling) activity
4
Insider ownership (buying, selling) activity
4
Insider ownership (buying, selling) activity
4
Insider ownership (buying, selling) activity
4
Insider ownership (buying, selling) activity
4
Insider ownership (buying, selling) activity
4
Insider ownership (buying, selling) activity
4
Insider ownership (buying, selling) activity
4
Insider ownership (buying, selling) activity
4
Insider ownership (buying, selling) activity
4
Insider ownership (buying, selling) activity
4
Insider ownership (buying, selling) activity
4
Insider ownership (buying, selling) activity
Southern Company (Form SC 13G/A) 2026
Ownership & Other / Updated passive ownership disclosure
Mar 27, 2026
