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SOUTHERN CO Director's Dealing 2026

Feb 3, 2026

29866_dirs_2026-02-03_ef14f308-c2aa-4119-b42f-7a6eaf7f8059.zip

Director's Dealing

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SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SOUTHERN CO (SO)
CIK: 0000092122
Period of Report: 2026-01-31

Reporting Person: Kim Matthew M. (N/A)

Non-Derivative Transactions

Date Security Code Shares Price A/D Holdings After Ownership
2026-01-31 Southern Company Common Stock M 340 Acquired 9427 Direct
2026-01-31 Southern Company Common Stock F 170 $89.31 Disposed 9257 Direct
2026-02-01 Southern Company Common Stock M 345 Acquired 9602 Direct
2026-02-01 Southern Company Common Stock F 173 $89.31 Disposed 9429 Direct

Derivative Transactions

Date Security Exercise Price Code Shares A/D Expiration Underlying Ownership
2026-01-31 Southern Co Restricted Stock Units $0 M 317 Disposed Southern Company Common Stock (317) Direct
2026-02-01 Southern Co Restricted Stock Units $0 M 308 Disposed Southern Company Common Stock (308) Direct

Holdings (Non-Derivative)

Security Shares Ownership
Southern Company Common Stock 1192.7661 Indirect

Footnotes

F1: Shares acquired upon vesting of second 1/3 of restricted stock units granted on January 31, 2024. Includes 23 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 37 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.