🕵️ Compass Minerals International Inc ($CMP)
SEC insider & ownership activity, last 12 months · CIK 1227654 · every row links its SEC filing
Insiders were quiet over the last 12 months – no open-market buys or sells. Blackrock, Inc. trimmed 8.2% → 6.1%; State Street Corporation added 4.9% → 5.5%. No red-flag 8-Ks in the window.
Insider flow
0 buyers, $0 (0 lots) · 0 sellers, $0 (0 lots)
No open-market insider transactions in the last 12 months.
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Blackrock, Inc. | 6.1% | 13G | Apr 27, 2026 | filing ↗ | |
| State Street Corporation | 5.5% | 13G | May 12, 2026 | filing ↗ | |
| M Partners Fund LP | 5.5% | 13G | Nov 18, 2025 | filing ↗ | |
| M Partners Fund (GP) LLC | 5.5% | 13G | Nov 18, 2025 | filing ↗ | |
| Ali John Mirshekari | 5.5% | 13G | Nov 18, 2025 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Mary L. Frontczak | $19K | Aug 27, 2025 | filing ↗ |
| Mary Frontczak | $181K | Aug 19, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Earnings (2.02) | May 6, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 6, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Mar 20, 2026 | filing ↗ |
| Other events (8.01) | Mar 20, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 20, 2026 | filing ↗ |
| Shareholder vote (5.07) | Mar 5, 2026 | filing ↗ |
| Earnings (2.02) | Feb 4, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 4, 2026 | filing ↗ |
| Officer/director changes (5.02) | Dec 18, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Dec 18, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 18, 2025 | filing ↗ |
| Other events (8.01) | Dec 10, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 10, 2025 | filing ↗ |
| Earnings (2.02) | Dec 8, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 8, 2025 | filing ↗ |
| Other events (8.01) | Aug 15, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 15, 2025 | filing ↗ |
| Earnings (2.02) | Aug 11, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 11, 2025 | filing ↗ |