[144] SOUTHERN CO SEC Filing

Rhea-AI Filing Summary

The Southern Company filed a Form 144 reporting a proposed sale of 100 shares of Common Stock (CUSIP 1127301098). The shares are linked to a Performance Stock Unit vest dated 02/07/2024 and were reported sold in the past three months on 05/01/2026 by Matthew M. Kim. The broker listed is Merrill Lynch (3455 Peachtree Road NE, Atlanta).

Key Figures

Shares proposed for sale: 100 shares CUSIP: 1127301098 Form date / filing date: 06/01/2026 +4 more

7 metrics

Shares proposed for sale 100 shares Common Stock listed on Form 144

CUSIP 1127301098 Common Stock identifier on the form

Form date / filing date 06/01/2026 Date shown on securities information line

Vesting date 02/07/2024 Performance Stock Unit vest date

Reported sale date 05/01/2026 Sale reported in "Securities Sold During The Past 3 Months"

Exchange NYSE Exchange code listed with the security

Broker-dealer Merrill Lynch Broker address: 3455 Peachtree Road NE, Suite 1000, Atlanta

Key Terms

Performance Stock Unit, Compensatory Payment, Form 144

3 terms

Performance Stock Unit financial

"Performance Stock Unit Vest dated 02/07/2024"

A performance stock unit is a type of reward companies give to employees, usually managers, that depends on how well the company performs over time. If the company hits specific goals, the employee earns shares of stock, like earning a prize for reaching certain levels in a game. It motivates employees to work hard because their rewards are tied to the company's success.

Compensatory Payment regulatory

"Compensatory Payment listed alongside the vest"

Form 144 regulatory

"Filer Information shows form type 144 and "Securities To Be Sold""

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

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Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Merrill Lynch 3455 Peachtree Road NE, Suite 1000 Atlanta GA 30326	100	9116	1127301098	06/01/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	02/07/2024	Performance Stock Unit Vest	The Southern Company			100	02/07/2024	Compensatory Payment

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Matthew M. Kim 30 Ivan Allen Jr. Boulevard, N.W. Atlanta GA 30308	Common	05/01/2026	100	9657

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)