SOUTHERN CO — Director's Dealing 2023

Feb 15, 2023

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SOUTHERN CO (SO)
CIK: 0000092122
Period of Report: 2023-02-13

Reporting Person: Kuczynski Stephen E (Pres. & CEO, Southern Nuclear)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2023-02-13	Southern Company Common Stock	A	44233	$0.00	Acquired	169006.1563	Direct
2023-02-13	Southern Company Common Stock	F	19619	$67.13	Disposed	149387.1563	Direct
2023-02-13	Southern Company Common Stock	M	3410	$0.00	Acquired	152797.1563	Direct
2023-02-13	Southern Company Common Stock	F	1513	$67.13	Disposed	151284.1563	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2023-02-15	Performance Restricted Stock Units	$0.00	M	3285	Disposed		Southern Company Common Stock (3285)	Direct

Footnotes

F1: Shares acquired upon vesting of performance share units under Company's Performance Share Program for the 2020-2022 award. The Compensation and Management Succession Committee certified performance on February 13, 2023. Includes accrued dividend equivalent units.

F2: Shares withheld to satisfy required state and federal tax withholding requirements.

F3: Shares acquired upon vesting of first 1/3 of performance restricted stock units granted on February 13, 2021. The Compensation Committee and Management Succession Committee certified performance on February 13, 2023. Includes 125
accrued dividend equivalent units.

F4: Represents first 1/3 of performance restricted stock units granted on February 13, 2022. The remaining award will vest 1/3 in 2024 and 1/3 in 2025. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.