| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Poroch David P. | EVP & CFO | 30 IVAN ALLEN JR BLVD NW, ATLANTA | /s/ Brittney Anderson, Attorney-in-Fact for David P. Poroch | 09 Feb 2026 | 0001616250 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | SO | Southern Company Common Stock | Options Exercise | $0 | +585 | +1.4% | $0.000000 | 41,489 | 05 Feb 2026 | Direct | F1 |
| transaction | SO | Southern Company Common Stock | Tax liability | $14,573 | -160 | -0.39% | $91.08 | 41,329 | 05 Feb 2026 | Direct | F2 |
| holding | SO | Southern Company Common Stock | 5,477 | 05 Feb 2026 | 401(k) |
| 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 | -566 | -33% | $0.000000 | 1,130 | 05 Feb 2026 | Southern Company Common Stock | 566 | $0.000000 | Direct | F3 |
| Id | Content |
|---|---|
| F1 | Shares acquired upon vesting of first 1/3 of restricted stock units granted on February 5, 2025. Includes 19 accrued dividend equivalent units. |
| F2 | Shares withheld to satisfy required state and federal tax withholding requirements. |
| F3 | Represents first 1/3 of 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. |