Southern Company (SO) executive Kimberly Greene sells 25,000 common shares

Rhea-AI Filing Summary

Southern Company executive Kimberly S. Greene, Chairman, President & CEO of GPC, sold 25,000 shares of Southern Company Common Stock in an open-market transaction. The shares were sold at $96.67 each, and she held 103,602 shares directly after the sale.

Insider Trade Summary 10b5-1

Net Seller: 25,000 shares ($2,416,750)

Net Sell 1 txn

Insider Greene Kimberly S,

Role Chairman, President & CEO, GPC

Sold 25,000 shs ($2.42M)

Type	Security	Shares	Price	Value
Sale	Southern Company Common Stock	25,000	$96.67	$2.42M

Holdings After Transaction: Southern Company Common Stock — 103,602 shares (Direct)

Footnotes (1)

Key Figures

Shares sold: 25,000 shares Sale price: $96.67 per share Transaction value: $2,416,750 +1 more

4 metrics

Shares sold 25,000 shares Open-market sale of Southern Company Common Stock

Sale price $96.67 per share Price for the reported sale transaction

Transaction value $2,416,750 25,000 shares sold at $96.67 per share

Shares held after sale 103,602 shares Direct ownership following the transaction

Key Terms

Southern Company Common Stock, open-market sale, Form 4, direct ownership

4 terms

Southern Company Common Stock financial

"security_title: "Southern Company Common Stock""

open-market sale financial

"transaction_action: "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

direct ownership financial

"ownership_type: "direct""

Form 4 Insider Transactions: What Each Field Means →

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).

X

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^*

Greene Kimberly S,

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/30/2026

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)
			Code	V	Amount	(A) or (D)	Price
Southern Company Common Stock	03/30/2026		S		25,000	D	$96.67	103,602	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 Kimberly S. Greene	03/31/2026
	** 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)

FAQ

What insider transaction did SO executive Kimberly S. Greene report?

Kimberly S. Greene reported an open-market sale of 25,000 Southern Company shares. The transaction involved Southern Company Common Stock and reflects a direct ownership change disclosed in a Form 4 insider filing for regulatory transparency and investor information.

At what price did Kimberly S. Greene sell Southern Company (SO) shares?

She sold 25,000 Southern Company Common Stock shares at $96.67 per share. This reported price applies to the disclosed open-market sale and is part of her required insider reporting as an executive of a Southern Company subsidiary.

How many Southern Company (SO) shares does Kimberly S. Greene hold after the sale?

After the reported sale, Kimberly S. Greene directly holds 103,602 Southern Company Common Stock shares. This post-transaction holding figure helps investors understand her remaining equity stake following the open-market sale disclosed on the Form 4.

What does an open-market sale by a Southern Company (SO) insider mean?

An open-market sale means the insider sold shares through normal stock market trading. For Southern Company, Kimberly S. Greene’s Form 4 indicates her transaction used this standard method rather than private transfers or derivative exercises.

Who is Kimberly S. Greene in relation to Southern Company (SO)?

Kimberly S. Greene is reported as Chairman, President & CEO of GPC, a Southern Company subsidiary. Her Form 4 filing reflects insider activity in Southern Company Common Stock connected to her executive role within the broader Southern Company organization.