Form 4 for SO Southern Company
Accepted 2026-02-03 00:00:00 ET · period of report 2026-01-31 · accession 0001193125-26-036097 · 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 | 2026-02-03 | 2026-01-31+ | SO | Cummiskey Christopher | EVP | M - OptEx | $0.00 | +3,509 | 25.3K | +16% | $0 |
| DM | 2026-02-03 | 2026-01-31+ | SO | Cummiskey Christopher | EVP | F - Tax | $89.31 | -1,592 | 24.4K | -6% | -$142.2K |
| DM | 2026-02-03 | 2026-01-31+ | SO | Cummiskey Christopher | EVP | M - OptEx | $0.00 | -3,211 | 1,674 | -66% | $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 | 2026-01-31 | M | A | 1,794 | $0.00 | 24,296.44 | D | — | — | (F1) Shares acquired upon vesting of second 1/3 of performance restricted stock units granted on January 31, 2024. Includes 120 accrued dividend equivalent units. |
| 2 | Common | Southern Company Common Stock | 2026-01-31 | F | D | 758 | $89.31 | 23,538.44 | D | — | — | (F2) Shares withheld to satisfy required state and federal tax withholding requirements. |
| 3 | Common | Southern Company Common Stock | 2026-02-01 | M | A | 1,715 | $0.00 | 25,253.44 | D | — | — | (F3) Shares acquired upon vesting of final 1/3 of performance restricted stock units granted on February 1, 2023. Includes 178 accrued dividend equivalent units. |
| 4 | Common | Southern Company Common Stock | 2026-02-01 | F | D | 834 | $89.31 | 24,419.44 | D | — | — | (F2) Shares withheld to satisfy required state and federal tax withholding requirements. |
| 5 | Derivative | Performance Restricted Stock Units | 2026-02-01 | M | D | 1,537 | $0.00 | 0 | D | $0.00 · — to — | 1,537 Southern Company Common Stock | (F4) 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. |
| 6 | Derivative | Performance Restricted Stock Units | 2026-01-31 | M | D | 1,674 | $0.00 | 1,674 | D | $0.00 · — to — | 167 Southern Company Common Stock | (F5) 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. |