🕵️ Cabot Corp ($CBT)
SEC insider & ownership activity, last 12 months · CIK 16040 · every row links its SEC filing
Over the last 12 months insiders sold $19.6M with no open-market buying against it. Sean D. Keohane sold $19.6M in discretionary trades (Aug). 1 planned sale is pending, the largest $238K (Sean D. Keohane). 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, $19.6M (3 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Sean D. Keohane | 0 | – | 3 | $19.6M | Aug 28, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Wellington Management Company LLP | 7.2% | 13G | May 12, 2025 | filing ↗ | |
| Vanguard Portfolio Management | 6.1% | 13G | Apr 29, 2026 | filing ↗ | |
| American Century Investment Management, Inc. | 5.4% | 13G | Aug 14, 2026 | filing ↗ | |
| American Century Companies, Inc. | 5.4% | 13G | Aug 14, 2026 | filing ↗ | |
| Stowers Institute for Medical Research | 5.4% | 13G | Aug 14, 2026 | filing ↗ | |
| Vanguard Capital Management | 5.2% | 13G | Apr 29, 2026 | filing ↗ | |
| American Century ETF Trust | 5.1% | 13G | Aug 14, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Sean D. Keohane | $11.5M | Aug 28, 2026 | filing ↗ |
| Sean D. Keohane | $238K | Aug 24, 2026 | filing ↗ |
| Sean D. Keohane | $7.9M | Aug 7, 2026 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Officer/director changes (5.02) | Sep 11, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Sep 11, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Sep 11, 2026 | filing ↗ |
| Other events (8.01) | Aug 21, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 21, 2026 | filing ↗ |
| Other events (8.01) | Aug 12, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 12, 2026 | filing ↗ |
| Earnings (2.02) | Aug 3, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 3, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jul 24, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jul 24, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 24, 2026 | filing ↗ |
| Material agreement (1.01) | May 12, 2026 | filing ↗ |
| Agreement terminated (1.02) | May 12, 2026 | filing ↗ |
| New financial obligation (2.03) | May 12, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 12, 2026 | filing ↗ |
| Earnings (2.02) | May 5, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 5, 2026 | filing ↗ |
| Shareholder vote (5.07) | Mar 12, 2026 | filing ↗ |
| Earnings (2.02) | Feb 3, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 3, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jan 8, 2026 | filing ↗ |
| Earnings (2.02) | Nov 3, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 3, 2025 | filing ↗ |