Southern Company (SO) director reports 946.1009 deferred stock units grant

Rhea-AI Filing Summary

Southern Company director William G. Smith, Jr. reported a routine equity compensation transaction. On 01/02/2026 he acquired 946.1009 deferred stock units as his quarterly director equity retainer under the Southern Company 2021 Equity and Incentive Compensation Plan, deferred into the Deferred Compensation Plan for Outside Directors of The Southern Company.

Each deferred stock unit represents the right to receive one share of Southern Company common stock, with a reference price of $87.2 per share. After this grant, Smith beneficially owns 158,750.1666 deferred stock units on a direct basis. These units are to be settled in shares of common stock after his service on the Board ends, and they have no exercise or expiration date.

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

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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^*

SMITH WILLIAM G JR

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
01/02/2026

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

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
Deferred Stock Units Holding(1)	$0	01/02/2026		A		946.1009		(2)	(2)	Southern Company Common Stock	946.1009	$87.2	158,750.1666(3)	D

Explanation of Responses:

1. 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.

2. 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.

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

	/s/ Brittney Anderson, Attorney-in-Fact for William G. Smith, Jr.	01/06/2026
	** 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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Southern Co (SO) disclose in this Form 4?

Southern Company disclosed that director William G. Smith, Jr. acquired 946.1009 deferred stock units on 01/02/2026 as part of his quarterly director equity retainer.

How many Southern Co (SO) deferred stock units does the director own after this transaction?

Following the reported transaction, William G. Smith, Jr. beneficially owns 158,750.1666 deferred stock units of Southern Company on a direct basis.

What do the Southern Co (SO) deferred stock units represent?

Each deferred stock unit represents the right to receive one share of Southern Company common stock, issued under the company’s equity and incentive compensation and deferred compensation plans.

When will the Southern Co (SO) deferred stock units be settled into shares?

The deferred stock units are settled in shares of Southern Company common stock on the date or dates following the termination of the director’s Board service, as specified by the director.

Is there an exercise or expiration date on the Southern Co (SO) deferred stock units?

No. The filing states that there is no exercise or expiration date for these deferred stock units.

How were additional Southern Co (SO) deferred stock units accumulated by the director?

The total includes additional deferred stock units acquired through the dividend reinvestment feature of the Deferred Compensation Plan for Outside Directors of The Southern Company.

At what reference price were the Southern Co (SO) deferred stock units valued in this grant?

The price of the derivative security associated with the deferred stock units was reported as $87.2 per share.