SOUTHERN CO — Director's Dealing 2026

Jan 6, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SOUTHERN CO (SO)
CIK: 0000092122
Period of Report: 2026-01-02

Reporting Person: Klein Dale E. (N/A)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-01-02	Deferred Stock Units Holding	$0	A	516.055	Acquired		Southern Company Common Stock (516.055)	Direct

Footnotes

F1: Represents quarterly director equity retainer paid under the Southern Company 2021 Equity and Incentive Compensation Plan and deferred pursuant to the Deferred Compensation Plan for Outside Directors of The Southern Company (Deferred Compensation Plan). Each deferred stock unit represents the right to receive one share of Southern Company common stock.

F2: Deferred stock units are settled in shares of Southern Company common stock on the date(s) following the termination of the reporting person's service on the Board as specified by the reporting person pursuant to the Deferred Compensation Plan. There is no exercise or expiration date.

F3: Includes additional deferred stock units acquired through the dividend reinvestment feature of the Deferred Compensation Plan.