Pedro P. Cherry - 31 Jan 2026 Form 4 Insider Report for SOUTHERN CO (SO)

Role
Chairman, President & CEO, MPC
Signature
/s/ Brittney Anderson, Attorney-in-Fact for Pedro P. Cherry
Issuer symbol
SO
Transactions as of
31 Jan 2026
Net transactions value
-$60,016
Form type
4
Filing time
03 Feb 2026, 18:19:24 UTC
Previous filing
02 Jan 2026
Next filing
09 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Cherry Pedro P. Chairman, President & CEO, MPC 30 IVAN ALLEN JR. BLVD., NW, ATLANTA /s/ Brittney Anderson, Attorney-in-Fact for Pedro P. Cherry 03 Feb 2026 0001697382

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction SO Southern Company Common Stock Options Exercise $0 +745 $0.000000 745 31 Jan 2026 Direct F1
transaction SO Southern Company Common Stock Tax liability $27,329 -306 -41% $89.31 439 31 Jan 2026 Direct F2
transaction SO Southern Company Common Stock Options Exercise $0 +751 +171% $0.000000 1,190 01 Feb 2026 Direct F3
transaction SO Southern Company Common Stock Tax liability $32,687 -366 -31% $89.31 824 01 Feb 2026 Direct F2
holding SO Southern Company Common Stock 15,290 31 Jan 2026 401(k)

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction SO Southern Co Restricted Stock Units Options Exercise $0 -695 -50% $0.000000 696 31 Jan 2026 Southern Company Common Stock 695 $0.000000 Direct F4
transaction SO Southern Co Restricted Stock Units Options Exercise $0 -672 -100% $0.000000 0 01 Feb 2026 Southern Company Common Stock 672 $0.000000 Direct F5
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Shares acquired upon vesting of second 1/3 of restricted stock units granted on January 31, 2024. Includes 50 accrued dividend equivalent units.
F2 Shares withheld to satisfy required state and federal tax withholding requirements.
F3 Shares acquired upon vesting of final 1/3 of performance restricted stock units granted on February 1, 2023. Includes 79 accrued dividend equivalent units.
F4 Represents second 1/3 of restricted stock units granted on January 31, 2024. The remaining award will vest in 2027. 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.
F5 Represents final 1/3 of performance restricted stock units granted on February 1, 2023. 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.