Form 4 for SO Southern Company
Accepted 2026-02-13 00:00:00 ET · period of report 2026-02-11 · accession 0001193125-26-051195 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DM | 2026-02-13 | 2026-02-11 | SO | Cummiskey Christopher | EVP | F - Tax | $90.86 | -10.6K | 36.7K | -22% | -$964.8K |
| D | 2026-02-13 | 2026-02-11 | SO | Cummiskey Christopher | EVP | M - OptEx | $0.00 | +1,490 | 38.2K | +4% | $0 |
| D | 2026-02-13 | 2026-02-11 | SO | Cummiskey Christopher | EVP | A - Grant | $0.00 | +22.2K | 46.6K | +91% | $0 |
| D | 2026-02-13 | 2026-02-11 | SO | Cummiskey Christopher | EVP | M - OptEx | $0.00 | -1,441 | 2,880 | -33% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Southern Company Common Stock | 2026-02-11 | F | D | 738 | $90.86 | 37,469.44 | D | — | — | (F2) Shares withheld to satisfy required state and federal tax withholding requirements. |
| 2 | Common | Southern Company Common Stock | 2026-02-11 | M | A | 1,490 | $0.00 | 38,207.44 | D | — | — | (F3) Shares acquired upon vesting of first 1/3 of performance restricted stock units granted on February 5, 2025. The Compensation and Talent Development Committee certified performance on February 11, 2026. Includes 49 accrued dividend equivalent units. |
| 3 | Common | Southern Company Common Stock | 2026-02-11 | F | D | 9,880 | $90.86 | 36,717.44 | D | — | — | (F2) Shares withheld to satisfy required state and federal tax withholding requirements. |
| 4 | Common | Southern Company Common Stock | 2026-02-11 | A | A | 22,178 | $0.00 | 46,597.44 | D | — | — | (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. |
| 5 | Derivative | Performance Restricted Stock Units | 2026-02-11 | M | D | 1,441 | $0.00 | 2,880 | D | $0.00 · — to — | 1,441 Southern Company Common Stock | (F4) Represents first 1/3 of performance restricted stock units granted on February 5, 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. |