SOUTHERN CO 4

EVP & CLO Sterling A. Spainhour Jr. sold 3,333 shares of Southern Company Common Stock in an open-market transaction.

On August 6, 2026, EVP & CLO Sterling A. Spainhour Jr. of Southern Company reported an open-market sale of 3,333 shares of Southern Company Common Stock at an average price of approximately $94.02 per share, for total proceeds of about $313,380. Following this disposition, Spainhour retained direct ownership of 35,219 common shares, and also held an additional 951.3316 shares indirectly in a 401(k) plan, implying a remaining economic stake valued at roughly $3.37 million based on the recent trading price. The transaction represents a moderate-sized insider sale relative to his overall holdings and appears to be a straightforward discretionary sale rather than part of an award or option exercise.

Filing Facts

CIK

92122

Ticker

SO

Form

4

Source Type

sec

Accession

0001193125-26-340057

Alert Tier

6