🕵️ Centene Corp ($CNC)
SEC insider & ownership activity, last 12 months · CIK 1071739 · every row links its SEC filing
Over the last 12 months insiders sold $14.6M with no open-market buying against it. Kenneth A. Burdick sold $7.7M in discretionary trades (Dec–Jun). No red-flag 8-Ks in the window.
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 2 sellers, $14.6M (5 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Kenneth A. Burdick | 0 | – | 3 | $7.7M | Jun 10, 2026 |
| Koster Christopher | 0 | – | 2 | $6.9M | Aug 26, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| BlackRock, Inc. | 7.7% | 13G | Jul 16, 2025 | filing ↗ | |
| Vanguard Capital Management | 7.3% | 13G | Apr 29, 2026 | filing ↗ | |
| AQR Capital Management, LLC | 6.5% | 13G | Feb 13, 2026 | filing ↗ | |
| AQR Capital Management Holdings, LLC | 6.5% | 13G | Feb 13, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Kenneth A. Burdick | $2.8M | Aug 26, 2026 | filing ↗ |
| Koster Christopher | $3.8M | Aug 26, 2026 | filing ↗ |
| Koster Christopher | $3.1M | Aug 18, 2026 | filing ↗ |
| Kenneth A. Burdick | $6.8M | Aug 5, 2026 | filing ↗ |
| Kenneth A. Burdick | $5.2M | Jun 10, 2026 | filing ↗ |
| Kenneth A. Burdick | $1.3M | Dec 4, 2025 | filing ↗ |
| Kenneth A. Burdick | $1.3M | Dec 3, 2025 | filing ↗ |
| Wayne S. DeVeydt | $197K | Oct 15, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Reg FD disclosure (7.01) | Sep 16, 2026 | filing ↗ |
| Officer/director changes (5.02) | Aug 12, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Aug 12, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 12, 2026 | filing ↗ |
| Other events (8.01) | Jul 29, 2026 | filing ↗ |
| Earnings (2.02) | Jul 28, 2026 | filing ↗ |
| Officer/director changes (5.02) | 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 19, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jun 19, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 19, 2026 | filing ↗ |
| Officer/director changes (5.02) | May 12, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 12, 2026 | filing ↗ |
| Earnings (2.02) | Apr 28, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 28, 2026 | filing ↗ |
| Officer/director changes (5.02) | Mar 18, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Mar 10, 2026 | filing ↗ |
| Other events (8.01) | Mar 10, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Feb 23, 2026 | filing ↗ |
| Earnings (2.02) | Feb 6, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 6, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Nov 10, 2025 | filing ↗ |
| Earnings (2.02) | Oct 29, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 29, 2025 | filing ↗ |