Sean D. Keohane is CEO & President at CABOT CORP (CBT). They have made 14 open-market trades across 1 company since 2009, most recently 2026-08-28.
CIK 0001435737
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 14 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| CBT | 404,134 | $30.0M |
| CC | 72,555 | $924K |
| Total | $31.0M |
Shares reported on the most recent Form 4, priced at the 2026-08-31 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CBT | SELL | 2026-08-28 | 2026-08-31 | $85.00 | $11.5M | -2.1% | -5.5% | — |
| CBT | SELL | 2026-08-24 | 2026-08-26 | $85.50 | $238K | -3.4% | -5.1% | — |
| CBT | SELL | 2026-08-07 | 2026-08-11 | $86.41 | $7.9M | -2.1% | -9.3% | — |
| CBT | SELL | 2025-08-14 | 2025-08-15 | $79.28 | $18.1M | +5.2% | +1.4% | -20.1% |
| CBT | SELL | 2024-09-03 | 2024-09-04 | $101.55 | $5.2M | +4.4% | +9.2% | +9.4% |
| CBT | SELL | 2024-03-01 | 2024-03-04 | $85.43 | $3.1M | +1.5% | +9.7% | +17.6% |
| CBT | SELL | 2022-05-24 | 2022-05-26 | $69.15 | $2.0M | +4.8% | -9.2% | +3.5% |
| CBT | SELL | 2018-06-05 | 2018-06-06 | $62.99 | $7.5M | -1.2% | -3.9% | +0.2% |
| CBT | SELL | 2014-06-06 | 2014-06-09 | $59.33 | $1.5M | -8.2% | +0.2% | +0.2% |
| CBT | SELL | 2013-12-05 | 2013-12-05 | $48.74 | $1.2M | -8.2% | +0.2% | +0.2% |
| CBT | SELL | 2013-09-19 | 2013-09-23 | $42.56 | $1.1M | -8.2% | +0.2% | +0.2% |
| CBT | SELL | 2012-03-19 | 2012-03-20 | $43.25 | $2.6M | -8.2% | +0.2% | +0.2% |
| CBT | SELL | 2010-08-17 | 2010-08-19 | $29.31 | $547K | -8.2% | +0.2% | +0.2% |
| CBT | SELL | 2009-08-14 | 2009-08-17 | $19.79 | $261K | -8.2% | +0.2% | +0.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.