🕵️ Southern Co ($SO)
SEC insider & ownership activity, last 12 months · CIK 92122 · every row links its SEC filing
Over the last 12 months insiders sold $5.6M with no open-market buying against it. Kimberly Greene sold $2.4M through a 10b5-1 trading plan in 1 lots (Mar). No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 6 sellers, $5.6M (9 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Kimberly Greene | 0 | – | 1 | $2.4M | Mar 30, 2026 |
| Stanley Connally | 0 | – | 1 | $1.2M | Mar 18, 2026 |
| Christopher Cummiskey | 0 | – | 1 | $644K | Mar 19, 2026 |
| Bryan Anderson | 0 | – | 1 | $582K | Sep 30, 2025 |
| Matthew M. Kim | 0 | – | 4 | $516K | Jul 1, 2026 |
| Sterling A. Spainhour Jr. | 0 | – | 1 | $226K | Aug 11, 2025 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Vanguard Capital Management | 7.4% | 13G | Apr 30, 2026 | filing ↗ | |
| Capital World Investors | 5.6% | 13G | May 14, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Matthew Kim | $10K | Jul 1, 2026 | filing ↗ |
| Matthew M. Kim | $9K | Jun 1, 2026 | filing ↗ |
| Matthew Kim | $10K | May 1, 2026 | filing ↗ |
| Kimberly Greene | $2.4M | Mar 30, 2026 | filing ↗ |
| Christopher Cummiskey | $644K | Mar 19, 2026 | filing ↗ |
| Stanley Connally | $1.2M | Mar 18, 2026 | filing ↗ |
| Matthew M. Kim | $487K | Feb 24, 2026 | filing ↗ |
| Bryan Anderson | $582K | Sep 30, 2025 | filing ↗ |
| Sterling A. Spainhour Jr. | $226K | Aug 11, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Other events (8.01) | Jun 8, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 8, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 13, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 13, 2026 | filing ↗ |
| Earnings (2.02) | Apr 30, 2026 | filing ↗ |
| Other events (8.01) | Mar 16, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 16, 2026 | filing ↗ |
| Material agreement (1.01) | Feb 20, 2026 | filing ↗ |
| New financial obligation (2.03) | Feb 20, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 20, 2026 | filing ↗ |
| Earnings (2.02) | Feb 19, 2026 | filing ↗ |
| Other events (8.01) | Dec 19, 2025 | filing ↗ |
| Other events (8.01) | Dec 9, 2025 | filing ↗ |
| Other events (8.01) | Nov 3, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 3, 2025 | filing ↗ |
| Earnings (2.02) | Oct 30, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Sep 15, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Sep 15, 2025 | filing ↗ |
| Earnings (2.02) | Jul 31, 2025 | filing ↗ |
| Officer/director changes (5.02) | Jul 21, 2025 | filing ↗ |