CBT (Cabot Corporation)
Insider Trading Activity
Every open-market purchase and sale reported by CBT officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-11 | Sean D Keohane | President and CEO | MIXED | — | — |
| 2026-07-02 | Raffiq Nathoo | Director | A | — | — |
| 2026-07-02 | Sean D Keohane | President and CEO | A | — | — |
| 2026-06-16 | Raffiq Nathoo | Director | A | — | — |
| 2026-06-16 | Sean D Keohane | President and CEO | A | — | — |
| 2026-06-16 | DOUGLAS G DELGROSSO | Director | A | — | — |
| 2026-06-16 | Lisa M Dumont | VP, Controller & CAO | A | — | — |
| 2026-06-16 | Erica McLaughlin | Executive Vice President, CFO | A | — | — |
| 2026-06-16 | Karen A Kalita | SVP and General Counsel | A | — | — |
| 2026-06-16 | William F III Masterson | Senior Vice President | A | — | — |
| 2026-04-01 | Raffiq Nathoo | Director | A | — | — |
| 2026-03-17 | William F III Masterson | Senior Vice President | A | — | — |
| 2026-03-17 | Karen A Kalita | SVP and General Counsel | A | — | — |
| 2026-03-17 | Raffiq Nathoo | Director | A | — | — |
| 2026-03-17 | Sean D Keohane | President and CEO | A | — | — |
| 2026-03-17 | DOUGLAS G DELGROSSO | Director | A | — | — |
| 2026-03-17 | Erica McLaughlin | Executive Vice President, CFO | A | — | — |
| 2026-03-17 | Lisa M Dumont | VP, Controller & CAO | A | — | — |
| 2026-01-12 | Raffiq Nathoo | Director | MIXED | — | — |
| 2026-01-12 | William C. Kirby | Director | A | — | — |
| 2026-01-12 | Cynthia A Arnold | Director | A | — | — |
| 2026-01-12 | Frank Anders Wilson | Director | A | — | — |
| 2026-01-12 | Christine Y Yan | Director | A | — | — |
| 2026-01-12 | Michael M Morrow | Director | A | — | — |
| 2026-01-12 | Michelle Elizabeth Williams | Director | A | — | — |
| 2026-01-12 | Thierry FJ Vanlancker | Director | A | — | — |
| 2026-01-12 | DOUGLAS G DELGROSSO | Director | A | — | — |
| 2026-01-12 | Raffiq Nathoo | Director | A | — | — |
| 2026-01-12 | CABOT JUAN ENRIQUEZ | Director | A | — | — |
| 2026-01-05 | Sean D Keohane | President and CEO | A | — | — |
| 2026-01-05 | William F III Masterson | Senior Vice President | A | — | — |
| 2026-01-05 | Erica McLaughlin | Executive Vice President, CFO | A | — | — |
| 2026-01-05 | Karen A Kalita | SVP and General Counsel | A | — | — |
| 2026-01-05 | Lisa M Dumont | VP, Controller & CAO | A | — | — |
| 2026-01-05 | Raffiq Nathoo | Director | A | — | — |
| 2026-01-05 | CABOT JUAN ENRIQUEZ | Director | A | — | — |
| 2025-12-16 | DOUGLAS G DELGROSSO | Director | A | — | — |
| 2025-12-16 | Sean D Keohane | President and CEO | A | — | — |
| 2025-12-16 | Lisa M Dumont | VP, Controller & CAO | A | — | — |
| 2025-12-16 | William F III Masterson | Senior Vice President | A | — | — |
| 2025-12-16 | Karen A Kalita | SVP and General Counsel | A | — | — |
| 2025-12-16 | Raffiq Nathoo | Director | A | — | — |
| 2025-12-16 | CABOT JUAN ENRIQUEZ | Director | A | — | — |
| 2025-12-16 | Erica McLaughlin | Executive Vice President, CFO | A | — | — |
| 2025-12-05 | William F III Masterson | Senior Vice President | A | — | — |
| 2025-11-21 | Sean D Keohane | President and CEO | MIXED | — | — |
| 2025-11-21 | Jeff Ji Zhu | Executive Vice President | MIXED | — | — |
| 2025-11-21 | Erica McLaughlin | Executive Vice President, CFO | MIXED | — | — |
| 2025-11-21 | Lisa M Dumont | VP, Controller & CAO | MIXED | — | — |
| 2025-11-21 | Karen A Kalita | SVP and General Counsel | MIXED | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | 10%+ Owner | 10,078,200 | — |
| — | 10%+ Owner | 10,053,700 | — |
| — | 10%+ Owner | 10,024,800 | — |
| — | 10%+ Owner | 9,586,642 | — |
| — | 10%+ Owner | 5,913,400 | — |
| — | Chairman, CEO and President | 845,570 | — |
| — | President and CEO | 418,397 | — |
| — | 10%+ Owner | 297,900 | — |
| — | Director | 220,216 | — |
| — | Executive Vice President | 119,959 | — |
| — | Executive Vice President | 85,337 | — |
| — | Executive Vice President, CFO | 80,059 | — |
| — | Executive Vice President, CFO | 73,099 | — |
| — | Executive Vice President | 65,417 | — |
| — | Executive Vice President | 64,096 | — |
| — | Vice President | 59,715 | — |
| — | Executive Vice President | 58,597 | — |
| — | SVP, General Counsel | 58,558 | — |
| — | Director | 53,992 | — |
| — | Director | 47,690 | — |
| — | SVP and General Counsel | 45,819 | — |
| — | Director | 43,626 | — |
| — | Senior Vice President | 42,553 | — |
| — | Vice President and Controller | 35,684 | — |
| — | Director | 33,142 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the CBT quote page; the site-wide leaderboard is on the insider transactions hub.