SEC Form 4 · accession 0001193125-26-288376
SOUTHERN CO · SO
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Peter P Sena III
Officer — Chairman,President & CEO, SNC
Period of report
Jun 28, 2026
Accepted (ET)
Jun 29, 2026 · 4:00 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0000092122
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Southern Company Common StockF1 | Jun 28, 2026 | M | 712 | $0.00 | A | 31,517 | D | |
| Southern Company Common StockF2 | Jun 28, 2026 | F | 316 | $97.16 | D | 31,201 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Performance Restricted Stock UnitsF3 | $0.00 | Jun 28, 2026 | M | 667 | D | — | — | Southern Company Common Stock | 667 | 667 | D |
Explanation of responses
- F1Shares acquired upon vesting of second 1/3 of performance restricted stock units granted on June 28, 2024. Includes 45 accrued dividend equivalent units.
- F2Shares withheld to satisfy required state and federal tax withholding requirements.
- F3Represents second 1/3 of performance restricted stock units granted on June 28, 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.