🕵️ Alliant Energy Corp ($LNT)
SEC insider & ownership activity, last 12 months · CIK 352541 · every row links its SEC filing
Over the last 12 months insiders sold $7 with no open-market buying against it. Robert J. Durian sold $7 in discretionary trades (Aug). 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) · 1 seller, $7 (1 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Robert J. Durian | 0 | – | 1 | $7 | Aug 10, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Vanguard Capital Management | 7.5% | 13G | Apr 29, 2026 | filing ↗ | |
| Vanguard Portfolio Management | 5.7% | 13G | Apr 28, 2026 | filing ↗ |
Planned insider sales (Form 144)
No sale notices filed in the last 12 months.
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Earnings (2.02) | Jul 30, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 30, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 20, 2026 | filing ↗ |
| Earnings (2.02) | Apr 30, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 30, 2026 | filing ↗ |
| Material agreement (1.01) | Mar 19, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 19, 2026 | filing ↗ |
| Material agreement (1.01) | Mar 2, 2026 | filing ↗ |
| New financial obligation (2.03) | Mar 2, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 2, 2026 | filing ↗ |
| Earnings (2.02) | Feb 19, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 19, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jan 5, 2026 | filing ↗ |
| Officer/director changes (5.02) | Dec 10, 2025 | filing ↗ |
| Other events (8.01) | Dec 2, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 2, 2025 | filing ↗ |
| Earnings (2.02) | Nov 6, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 6, 2025 | filing ↗ |
| Other events (8.01) | Sep 23, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Sep 23, 2025 | filing ↗ |