Southern Company director Turner receives stock grant

Q: How many deferred stock units did SO director John M. Turner Jr. receive?

John M. Turner Jr. acquired 913.5019 deferred stock units on October 1, 2026, as his quarterly director cash and equity retainer, deferred under the Southern Company 2021 Equity and Incentive Compensation Plan and the Deferred Compensation Plan for Outside Directors.

The director retainer is deferred as units representing rights to Southern Company shares, with settlement on dates following Board service as specified by the director.

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Rhea-AI Filing Summary

Southern Company director John M. Turner Jr. acquired 913.5019 deferred stock units on October 1, 2026, representing a quarterly director cash and equity retainer deferred under the Southern Company 2021 Equity and Incentive Compensation Plan and the Deferred Compensation Plan for Outside Directors. Each unit represents the right to receive one share of common stock. His resulting reported holding was 4,359.3386 deferred stock units, including additional units from dividend reinvestment. Settlement is in shares on dates following termination of Board service, as specified by the director.

Insider Trade Summary

Grant/Award: 913.5019 shares

Grant/Award 1 txn

Insider Turner John M JR

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Deferred Stock Units Holding ^{F1, F2, F3}	913.5019	$83.47	$76K

Holdings After Transaction: Deferred Stock Units Holding — 4,359.3386 contracts (Direct)

Footnotes (3)

F1. Represents quarterly director cash and 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.

Key Figures

Deferred stock units acquired: 913.5019 deferred stock units Resulting deferred stock unit holding: 4,359.3386 deferred stock units Reported price per share: $83.4700 per share

3 metrics

Deferred stock units acquired 913.5019 deferred stock units October 1, 2026; director retainer

Resulting deferred stock unit holding 4,359.3386 deferred stock units After the October 1, 2026 acquisition; includes units acquired through dividend reinvestment

Reported price per share $83.4700 per share Deferred stock unit acquisition reported for October 1, 2026

Key Terms

deferred stock units, Deferred Compensation Plan for Outside Directors, dividend reinvestment feature

3 terms

deferred stock units financial

"Each deferred stock unit represents the right to receive one share"

Deferred stock units are promises from a company to give an employee shares of stock at a future date, often after certain conditions are met or after leaving the company. They function like a form of delayed compensation, allowing employees to earn shares over time. For investors, they represent potential future ownership in the company, but do not provide immediate voting rights or dividends until the shares are actually received.

Deferred Compensation Plan for Outside Directors financial

"Deferred Compensation Plan for Outside Directors"

dividend reinvestment feature financial

"acquired through the dividend reinvestment feature"

FAQ

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How many deferred stock units did SO director John M. Turner Jr. receive?

John M. Turner Jr. acquired 913.5019 deferred stock units on October 1, 2026, as his quarterly director cash and equity retainer, deferred under the Southern Company 2021 Equity and Incentive Compensation Plan and the Deferred Compensation Plan for Outside Directors.

When does Southern Company settle director deferred stock units?

They are settled in shares of Southern Company common stock on dates following termination of Board service, as specified by the director under the Deferred Compensation Plan. Each unit represents the right to receive one share.

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Available on EDGAR 10/05/2026 - 02:13 PM Accepted by SEC EDGAR 10/05/2026 - 02:12 PM

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^*

Turner John M JR

(Last)

(First)

(Middle)

30 IVAN ALLEN JR. BLVD., NW

(Street)

ATLANTA

GEORGIA

30308

(City)

(State)

(Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/01/2026

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

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

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

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Deferred Stock Units Holding⁽¹⁾	$0	10/01/2026		A		913.5019		⁽²⁾	⁽²⁾	Southern Company Common Stock	913.5019	$83.47	4,359.3386⁽³⁾	D

Explanation of Responses:

1. Represents quarterly director cash and 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 John M. Turner, Jr.	10/05/2026
	** 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.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR