[Form 4] SOUTHERN CO Insider Trading Activity

Rhea-AI Filing Summary

John D. Johns, a director of Southern Company (SO), acquired deferred stock units under the companys Deferred Compensation Plan on 10/01/2025. The filing reports 448.3122 Deferred Stock Units were granted at $0 cash cost and are payable in Southern Company common stock only upon termination; there is no exercise or expiration date. After the grant, Mr. Johnss reported beneficial ownership equals 84,980.6331 shares. The Form 4 was signed by an attorney-in-fact on 10/02/2025.

Positive

• Acquisition of 448.3122 Deferred Stock Units increases alignment with shareholders
• Post-transaction beneficial ownership reported as 84,980.6331 shares, improving transparency

Negative

• None.

Insights

Corporate Governance Expert

Director received deferred stock units, increasing reported beneficial ownership.

The filing documents a non-cash grant of 448.3122 Deferred Stock Units that will convert to common stock only upon termination, which is a standard form of director compensation aligning long-term interests with shareholders. The disclosure of the post-transaction beneficial ownership of 84,980.6331 shares gives transparency on the directors stake in the company.

Executive Compensation Analyst

Grant is paid in stock only and carries no exercise/expiration dates.

This grant under the Deferred Compensation Plan is payable solely in stock and carries no exercise or expiration date, indicating it is a deferred entitlement rather than an option. That structure preserves value for the director until termination and conforms with common deferred-compensation practices for executives and directors.

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).

1. Name and Address of Reporting Person^*

JOHNS JOHN D

(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)
10/01/2025

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	10/01/2025		A		448.3122		(1)	(1)	Southern Company Common Stock	448.3122	$94.8	84,980.6331	D

Explanation of Responses:

1. Acquired pursuant to Southern's Deferred Compensation Plan, payable in stock only upon termination. There is no exercise or expiration date.

	/s/ Brittney Anderson, Attorney-in-Fact for John D. Johns	10/02/2025
	** 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 did John D. Johns report on the Form 4 for SO?

He reported receiving 448.3122 Deferred Stock Units on 10/01/2025, payable in Southern Company common stock upon termination.

When were the transaction and filing dates?

Transaction date: 10/01/2025. Form 4 signed: 10/02/2025.

How many shares does the filing show Mr. Johns beneficially owns after the grant?

84,980.6331 shares beneficially owned following the reported transaction.

Is cash required to acquire the deferred stock units?

No cash cost reported; the Deferred Stock Units are listed with a $0 price and are payable in stock only.

Do the deferred stock units have an exercise or expiration date?

No; the filing states there is no exercise or expiration date and the units are payable only upon termination.