# EDGAR Filing Document

**Accession Number:** 0002082705
**File Stem:** 0002082705-25-000002
**Filing Date:** 2025-8
**Character Count:** 6831
**Document Hash:** 984bdbb3273ac6b2d06b4093be093466
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0002082705-25-000002.hdr.sgml**: 20250822

**ACCESSION NUMBER**: 0002082705-25-000002

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 3

**CONFORMED PERIOD OF REPORT**: 20250731

**FILED AS OF DATE**: 20250822

**DATE AS OF CHANGE**: 20250822

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Kim Matthew M.
- **CENTRAL INDEX KEY:** 0002082705

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-03526
- **FILM NUMBER:** 251244139

**MAIL ADDRESS:**
- **STREET 1:** 30 IVAN ALLEN JR. BLVD
- **CITY:** ATLANTA
- **STATE:** GA
- **ZIP:** 30308
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** SOUTHERN CO
- **CENTRAL INDEX KEY:** 0000092122
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTRIC SERVICES [4911]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 580690070
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 30 IVAN ALLEN JR. BLVD., N.W.
- **CITY:** ATLANTA
- **STATE:** GA
- **ZIP:** 30308
- **BUSINESS PHONE:** 4045065000

**MAIL ADDRESS:**
- **STREET 1:** 30 IVAN ALLEN JR. BLVD., N.W.
- **CITY:** ATLANTA
- **STATE:** GA
- **ZIP:** 30308

## Ex-24

**POWER OF ATTORNEY**

The undersigned, an executive officer of The Southern Company, hereby makes, constitutes, and appoints Laura O. Hewett, Lindsay T. McClelland, Brittney Anderson and John Patrick Becker, my agents and attorneys-in-fact, for the limited purpose of signing on my behalf, and causing to be filed with the Securities and Exchange Commission Form ID and Initial Statement of Beneficial Ownership of Securities, Statement of Changes in Beneficial Ownership, and Annual Statement of Changes in Beneficial Ownership, on Forms 3, 4, and 5, respectively, and any appropriate amendment or amendments thereto.

This power of attorney shall remain in effect until my obligation to file the aforementioned reports as a director of The Southern Company ceases, unless earlier revoked by me by written document delivered to the Corporate Secretary of The Southern Company.

Effective the 31<sup>st</sup> day of July, 2025.

![img245623289_0.jpg](img245623289_0.jpg)

------

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

[ ] 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**<sup>*</sup><br>Kim Matthew M.<br><sub>(Last) (First) (Middle)</sub><br>30 IVAN ALLEN JR. BLVD., NW<br><sub>(Street)</sub><br>ATLANTA, GA 30308<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>SOUTHERN CO [ SO ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2025-07-31 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director   [ ] 10% Owner<br>[X] Officer (give title below)   [ ] Other (specify below)<br>_Comptroller_ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |
| Southern Company Common Stock | 9009 | D |  |
| Southern Company Common Stock | 2803.97 | I | 401(k) |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| Southern Co Restricted Stock Units<sup>(1)</sup> | <sup>(1)</sup> | <sup>(1)</sup> | Southern Company Common Stock | 635 | $0 | D |  |
| Southern Co Restricted Stock Units<sup>(2)</sup> | <sup>(2)</sup> | <sup>(2)</sup> | Southern Company Common Stock | 308 | $0 | D |  |
| Phantom Stock Units<sup>(3)</sup> | <sup>(3)</sup> | <sup>(3)</sup> | Southern Company Common Stock | 366.75 | $0 | D |  |
| Southern Co Restricted Stock Units<sup>(4)</sup> | <sup>(4)</sup> | <sup>(4)</sup> | Southern Company Common Stock | 844 | $0 | D |  |

---

### Footnotes:

(1) Represents Restricted Stock Units granted on January 31, 2024. The award vested 1/3 on the first anniversary of the grant date. The remaining award will vest 1/3 in 2026 and 1/3 in 2027. Each restricted stock unit represents the right to receive, at settlement, one share of common stock.

(2) Represents Restricted Stock Units granted on February 1, 2023. The award vested 1/3 on each of the first and second anniversaries of the grant date. The remaining award will vest in 2026. Each restricted stock unit represents the right to receive, at settlement, one share of common stock.

(3) Acquired on various dates between January 5, 2018 and March 1, 2024 pursuant to the Southern Company Deferred Compensation Plan, at prices ranging from $43.28 to $79.52 per unit, and the dividend reinvestment feature of the plan payable in cash only upon termination.

(4) Represents Restricted Stock Units granted on February 5, 2025. The award will vest 1/3 per year on the first, second and third anniversaries of grant date. Each restricted stock unit represents the right to receive, at settlement, one share of common stock.

**Signature:** /s/ Brittney Anderson, Attorney-in-Fact for Matthew M. Kim  
**Date:** 2025-08-22

### Remarks:

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.**