[Form 4] SOUTHERN CO Insider Trading Activity

Rhea-AI Filing Summary

SOUTHERN CO (SO) insider sale: Bryan D. Anderson, Executive Vice President, reported a sale of 6,206 shares of Southern Company common stock on 09/30/2025 at a reported price of $93.83 per share. After the transaction he is listed as beneficially owning 51,455 shares. The Form 4 was signed by an attorney-in-fact on 10/01/2025.

Positive

• Reporting complied with Section 16 filing requirements, evidenced by a signed Form 4 filed and executed by an attorney-in-fact
• Reporting person retains significant ownership after the sale (51,455 shares)

Negative

• Insider sale of 6,206 shares at $93.83 that reduced the reporting person’s stake

Insights

Financial Analyst

Insider sold a modest number of shares; transaction appears routine and not clearly material to company fundamentals.

The reported sale of 6,206 shares at $93.83 reduces the reporting person’s stake to 51,455 shares. The filing contains no information about the reason for the sale, any derivative transactions, nor any change in executive role. As a standalone disclosure this Form 4 documents ownership change but provides no direct signal about Southern Co’s operations or financial performance.

Corporate Governance Expert

Routine Section 16 disclosure of an executive sale; governance controls appear followed given timely filing and executed signature.

The Form 4 shows the sale and remaining beneficial ownership and is signed by an attorney-in-fact, indicating the filing was processed through proper channels. The disclosure lacks any linked derivative activity or schedule that would suggest complex compensation execution. Impact on governance is neutral based on the available facts.

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^*

Anderson Bryan 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)

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

3. Date of Earliest Transaction (Month/Day/Year)
09/30/2025

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
Southern Company Common Stock	09/30/2025		S		6,206	D	$93.83	51,455	D

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

Explanation of Responses:

	/s/ Brittney Anderson, Attorney-in-Fact for Bryan D. Anderson	10/01/2025
	** 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 Bryan D. Anderson report in the Form 4 for SO?

He reported a sale of 6,206 shares of Southern Company common stock on 09/30/2025 at $93.83 per share, leaving 51,455 shares beneficially owned.

When was the Form 4 for SO signed and filed?

The Form 4 shows the transaction date as 09/30/2025 and the signature by an attorney-in-fact is dated 10/01/2025.

Does the filing show any option exercises or derivative transactions for SO?

No. Table II (derivative securities) contains no entries; the filing only reports a non-derivative sale.

What is Bryan D. Anderson’s relationship to Southern Company as stated on the form?

He is listed as an Executive Vice President (EVP) and an officer of the issuer.

Does the Form 4 explain the reason for the sale?

No. The filing contains no explanation for the sale or any disclosure of purpose beyond the transaction details.