Sterling A. Spainhour Jr. - 01 Apr 2023 Form 3 Insider Report for SOUTHERN CO (SO)

Role: EVP, Chief Legal Officer & CCO
Signature: /s/Marcia R. DeMar, Attorney-in-Fact for Sterling A. Spainhour
Issuer symbol: SO
Transactions as of: 01 Apr 2023
Net transactions value: $0
Form type: 3
Filing time: 03 Apr 2023, 16:45:27 UTC
Previous filing: 09 May 2022
Next filing: 02 May 2023
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	SO	Southern Company Common Stock						4,772	01 Apr 2023	401K
holding	SO	Southern Company Common Stock						9,062	01 Apr 2023	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
holding	SO	Phantom Stock Units							01 Apr 2023	Southern Company Common Stock	1,237	$0.000000	Direct	F1
holding	SO	Southern Co Restricted Stock Units							01 Apr 2023	Southern Company Common Stock	1,324	$0.000000	Direct	F2
holding	SO	Southern Co Restricted Stock Units							01 Apr 2023	Southern Company Common Stock	490	$0.000000	Direct	F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Acquired on various dates between January 6, 2017 to March 4, 2022 pursuant to Southern deferred compensation plan, at prices ranging from $42.89 to $67.58 per unit, payable in cash only upon termination.
F2	Represents 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.
F3	Represents restricted stock units granted on February 3, 2021. The remaining award will vest 1/3 in 2024. Each restricted stock unit represents the right to receive, at settlement, one share of common stock.