🕵️ CMS Energy Corp ($CMS)
SEC insider & ownership activity, last 12 months · CIK 811156 · every row links its SEC filing
Over the last 12 months insiders sold $2.4M against $153K of open-market buying. John G Russell sold $1.1M in discretionary trades (Feb). No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
1 buyer, $153K (1 lots) · 4 sellers, $2.4M (8 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| John G Russell | 0 | – | 1 | $1.1M | Feb 20, 2026 |
| Brandon J. Hofmeister | 0 | – | 5 | $973K | May 26, 2026 |
| Lauren Y. Snyder | 0 | – | 1 | $158K | Sep 5, 2025 |
| Leopold Diane | 1 | $153K | 0 | – | Feb 25, 2026 |
| Scott B. McIntosh | 0 | – | 1 | $137K | Mar 2, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Blackrock, Inc. | 8.8% | 13G | Apr 17, 2025 | filing ↗ | |
| Vanguard Capital Management | 7.5% | 13G | Apr 29, 2026 | filing ↗ | |
| Vanguard Portfolio Management | 6.1% | 13G | Apr 29, 2026 | filing ↗ | |
| JPMorgan Chase & Co | 5.0% | 13G | May 12, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Brandon J. Hofmeister | $223K | May 26, 2026 | filing ↗ |
| Scott B. McIntosh | $137K | Mar 2, 2026 | filing ↗ |
| Brandon J. Hofmeister | $313K | Feb 27, 2026 | filing ↗ |
| John G Russell | $1.1M | Feb 20, 2026 | filing ↗ |
| Brandon J. Hofmeister | $290K | Nov 3, 2025 | filing ↗ |
| Lauren Y. Snyder | $162K | Sep 2, 2025 | filing ↗ |
| Brandon J. Hofmeister | $147K | Aug 8, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Earnings (2.02) | Jul 28, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jul 28, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 28, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jun 1, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jun 1, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 1, 2026 | filing ↗ |
| Other events (8.01) | May 13, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 13, 2026 | filing ↗ |
| Charter/bylaw changes (5.03) | May 8, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 8, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 8, 2026 | filing ↗ |
| Earnings (2.02) | Apr 28, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Apr 28, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 28, 2026 | filing ↗ |
| Officer/director changes (5.02) | Feb 20, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 20, 2026 | filing ↗ |
| Other events (8.01) | Feb 11, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 11, 2026 | filing ↗ |
| Earnings (2.02) | Feb 5, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Feb 5, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 5, 2026 | filing ↗ |
| Material agreement (1.01) | Nov 17, 2025 | filing ↗ |
| Agreement terminated (1.02) | Nov 17, 2025 | filing ↗ |
| Other events (8.01) | Nov 17, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 17, 2025 | filing ↗ |
| New financial obligation (2.03) | Nov 6, 2025 | filing ↗ |
| Unregistered equity sale (3.02) | Nov 6, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 6, 2025 | filing ↗ |
| Other events (8.01) | Nov 4, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 4, 2025 | filing ↗ |