Pedro P. Cherry - 11 Feb 2026 Form 4 Insider Report for SOUTHERN CO (SO)

Reporting relationship: Chairman, President & CEO, MPC
Issuer ticker: SO
Reported as of: 11 Feb 2026
Net transaction value: -$402,782
SEC form: 4
Accepted by SEC: 13 Feb 2026, 15:52:04 UTC
Prior SEC filing: 09 Feb 2026
Next SEC filing: 22 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Brittney Anderson, Attorney-in-Fact for Pedro P. Cherry

Key filing fact

Pedro P. Cherry filed Form 4 for SOUTHERN CO (SO) on 13 Feb 2026.

Key facts

This page summarizes Pedro P. Cherry's Form 4 filing for SOUTHERN CO (SO).
5 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 13 Feb 2026, 15:52.

Change

Previous filing in this sequence was filed on 09 Feb 2026.
Current net transaction value: -$402,782.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001697382 Primary reporting owner

Cherry Pedro P.

Relationship: Chairman, President & CEO, MPC
Address: 30 IVAN ALLEN JR. BLVD., NW, ATLANTA
Signature: /s/ Brittney Anderson, Attorney-in-Fact for Pedro P. Cherry
Signature date: 13 Feb 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

SO transaction

Southern Company Common Stock

Award

Transaction value: $0
Shares: +9,699
Change %: +845%
Price: $0.000000
Shares after: 10,847
Date: 11 Feb 2026
Ownership: Direct
Footnotes: F1

SO transaction

Southern Company Common Stock

Tax liability

Transaction value: $384,974
Shares: -4,237
Change %: -39%
Price: $90.86
Shares after: 6,610
Date: 11 Feb 2026
Ownership: Direct
Footnotes: F2

SO transaction

Southern Company Common Stock

Options Exercise

Transaction value: $0
Shares: +406
Change %: +6.1%
Price: $0.000000
Shares after: 7,016
Date: 11 Feb 2026
Ownership: Direct
Footnotes: F3

SO transaction

Southern Company Common Stock

Tax liability

Transaction value: $17,809
Shares: -196
Change %: -2.8%
Price: $90.86
Shares after: 6,820
Date: 11 Feb 2026
Ownership: Direct
Footnotes: F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

SO transaction Derivative

Performance Restricted Stock Units

Options Exercise

Transaction value: $0
Shares: -395
Change %: -33%
Price: $0.000000
Shares after: 788
Date: 11 Feb 2026
Ownership: Direct
Underlying class: Southern Company Common Stock
Underlying amount: 395
Exercise price: $0.000000
Footnotes: F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

Shares acquired upon vesting of performance share units under Company's Performance Share Program for the 2023-2025 award. The Compensation and Talent Development Committee certified performance on February 11, 2026. Includes accrued dividend equivalent units.

Footnote F2

Shares withheld to satisfy required state and federal tax withholding requirements.

Footnote F3

Shares acquired upon vesting of first 1/3 of performance restricted stock units granted on April 16, 2025. The Compensation and Talent Development Committee certified performance on February 11, 2026. Includes 11 accrued dividend equivalent units.

Footnote F4

Represents first 1/3 of performance restricted stock units granted on April 16, 2025. The remaining award will vest 1/3 in 2027 and 1/3 in 2028. Each restricted stock unit represents the right to receive, at settlement, one share of common stock. Additional units will be acquired with deemed dividends. Shares will be withheld upon vesting to satisfy tax requirements.