Southern CEO Pedro Cherry reports stock unit vesting

Southern Company executive Pedro P. Cherry reported routine equity award activity.

Rhea-AI Filing Summary

Southern Company executive Pedro P. Cherry reported routine equity award activity. On January 31, 2026, 745 shares of Southern Company common stock were acquired at $0 upon vesting of restricted stock units, with 306 shares withheld at $89.31 to cover taxes. On February 1, 2026, 751 additional shares were acquired at $0 from performance restricted stock units, with 366 shares withheld at $89.31 for tax obligations. Following these transactions, Cherry held 824 shares directly and 15,289.923 shares indirectly through a 401(k), reflecting ongoing compensation and tax-settlement mechanics rather than open-market trading.

Insider Trade Summary

1,367 shares exercised/converted

Exercise 7 txns

Insider Cherry Pedro P.

Role Chairman, President & CEO, MPC

Type	Security	Shares	Price	Value
Exercise	Southern Co Restricted Stock Units	672	$0.00	$0.00
Exercise	Southern Company Common Stock	751	$0.00	$0.00
Exercise Price or Tax Liability	Southern Company Common Stock	366	$89.31	$33K
Exercise	Southern Co Restricted Stock Units	695	$0.00	$0.00
Exercise	Southern Company Common Stock	745	$0.00	$0.00
Exercise Price or Tax Liability	Southern Company Common Stock	306	$89.31	$27K
holding	Southern Company Common Stock	--	--	--

Holdings After Transaction: Southern Co Restricted Stock Units — 696 contracts (Direct); Southern Company Common Stock — 824 shares (Direct); Southern Company Common Stock — 15,289.923 shares (Indirect, 401(k))

Footnotes (5)

1. F1. Shares acquired upon vesting of second 1/3 of restricted stock units granted on January 31, 2024. Includes 50 accrued dividend equivalent units.
2. F2. Shares withheld to satisfy required state and federal tax withholding requirements.
3. F3. Shares acquired upon vesting of final 1/3 of performance restricted stock units granted on February 1, 2023. Includes 79 accrued dividend equivalent units.
4. F4. Represents second 1/3 of restricted stock units granted on January 31, 2024. The remaining award will vest in 2027. 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.
5. F5. Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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.

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Accepted by SEC EDGAR 02/03/2026 - 06:19 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Cherry Pedro P.

(Last) (First) (Middle)

30 IVAN ALLEN JR. BLVD., NW

(Street)

ATLANTA GA 30308

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
SOUTHERN CO [ SO ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chairman, President & CEO, MPC

3. Date of Earliest Transaction (Month/Day/Year)
01/31/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Southern Company Common Stock	01/31/2026		M		745(1)	A	$0	745	D
Southern Company Common Stock	01/31/2026		F		306(2)	D	$89.31	439	D
Southern Company Common Stock	02/01/2026		M		751(3)	A	$0	1,190	D
Southern Company Common Stock	02/01/2026		F		366(2)	D	$89.31	824	D
Southern Company Common Stock								15,289.923	I	401(k)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Southern Co Restricted Stock Units	$0	01/31/2026		M			695(4)	(4)	(4)	Southern Company Common Stock	695	$0	696	D
Southern Co Restricted Stock Units	$0	02/01/2026		M			672(5)	(5)	(5)	Southern Company Common Stock	672	$0	0	D

Explanation of Responses:

1. Shares acquired upon vesting of second 1/3 of restricted stock units granted on January 31, 2024. Includes 50 accrued dividend equivalent units.

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

3. Shares acquired upon vesting of final 1/3 of performance restricted stock units granted on February 1, 2023. Includes 79 accrued dividend equivalent units.

4. Represents second 1/3 of restricted stock units granted on January 31, 2024. The remaining award will vest in 2027. 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.

5. Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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.

	/s/ Brittney Anderson, Attorney-in-Fact for Pedro P. Cherry	02/03/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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