Sloane N. Drake - 08 Mar 2026 Form 4 Insider Report for SOUTHERN CO (SO)

Reporting relationship: EVP & CHRO
Issuer ticker: SO
Reported as of: 08 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 10 Mar 2026, 15:33:13 UTC
Prior SEC filing: 13 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Brittney Anderson, Attorney-in-Fact for Sloane N. Drake

Key filing fact

Sloane N. Drake filed Form 4 for SOUTHERN CO (SO) on 10 Mar 2026.

Key facts

This page summarizes Sloane N. Drake's Form 4 filing for SOUTHERN CO (SO).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 10 Mar 2026, 15:33.

Change

Previous filing in this sequence was filed on 13 Feb 2026.
Current net transaction value: $0.

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 0001971188 Primary reporting owner

Drake Sloane N

Relationship: EVP & CHRO
Address: 30 IVAN ALLEN JR BLVD NW, ATLANTA
Signature: /s/ Brittney Anderson, Attorney-in-Fact for Sloane N. Drake
Signature date: 10 Mar 2026

Reported non-derivative transactions

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

SO transaction

Southern Company Common Stock

Options Exercise

Transaction value
Shares: +1,420
Change %: +3.7%
Price: $0.000000^*
Shares after: 39,565
Date: 08 Mar 2026
Ownership: Direct
Footnotes: F1

SO transaction

Southern Company Common Stock

Tax liability

Transaction value
Shares: -633
Change %: -1.6%
Price: $97.48^*
Shares after: 38,932
Date: 08 Mar 2026
Ownership: Direct
Footnotes: F2

SO holding

Southern Company Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 2,621
Date: 08 Mar 2026
Ownership: 401(k)

Reported derivative securities

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

SO transaction Derivative

Performance Restricted Stock Units Holding

Options Exercise

Transaction value
Shares: -1,275
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 08 Mar 2026
Ownership: Direct
Underlying class: Southern Company Common Stock
Underlying amount: 1,275
Exercise price: $0.000000
Footnotes: F3

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Shares acquired upon vesting of the final 1/3 of performance restricted stock units granted on March 8, 2023. Includes 145 accrued dividend equivalent units.

Footnote F2

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

Footnote F3

Represents the final 1/3 of performance restricted stock units granted on March 8, 2023. Each restricted stock unit represents the right to receive, at settlement, one share of common stock.