Greedy Insider
CABOT CORP (CBT) Insider Trades and Scores
CABOT CORP (CBT) insider trades: since Nov 11, 2025, Greedy Insider recorded 44 open-market buys and 15 sales on Form 4 from 10 insiders. The strongest recent filing scored 96 (Strong).
Who bought and who sold
Across the last 59 scoreable Form 4 transactions in CBT, 44 were open-market purchases and 15 were sales. The table lists the most recent filings with each one's Greediness Score, so the structurally unusual trades are easy to spot first.
| Insider | Role | Type | Shares | Date | Score | ||
|---|---|---|---|---|---|---|---|
| Nathoo Raffiq | Director | Buy | 360.0 | 27687.6 | 2026-09-30 | 83 | View |
| Kalita Karen A | SVP and General Counsel | Buy | 44.0 | 3384.04 | 2026-09-30 | 57 | View |
| Keohane Sean D | President | Buy | 346.0 | 26610.86 | 2026-09-30 | 76 | View |
| Masterson William F III | President | Buy | 24.0 | 1845.84 | 2026-09-30 | 74 | View |
| McLaughlin Erica | President | Buy | 93.0 | 7152.63 | 2026-09-30 | 66 | View |
| Nathoo Raffiq | Director | Buy | 11.0 | 876.48 | 2026-09-11 | 58 | View |
| Masterson William F III | President | Buy | 3.0 | 239.04 | 2026-09-11 | 64 | View |
| Kalita Karen A | SVP and General Counsel | Buy | 31.0 | 2470.08 | 2026-09-11 | 57 | View |
| Keohane Sean D | President | Buy | 283.0 | 22549.44 | 2026-09-11 | 74 | View |
| DELGROSSO DOUGLAS G | Director | Buy | 30.0 | 2390.4 | 2026-09-11 | 78 | View |
The strongest recent filing
Masterson William F III (President) bought 228 shares of CABOT CORP on Dec 31, 2025, a filing that scored 96 (Strong). It scored Strong because a senior insider was trading and several insiders moved the same way within a week. The score describes the filing, not future returns. This is not investment advice.
Cluster activity
A cluster buy is present: 7 insiders (Keohane Sean D, Masterson William F III, McLaughlin Erica, Kalita Karen A) traded CBT the same direction within a 7-day window. Shared conviction is a stronger structural signal than a lone trade.
How this compares with CABOT CORP's own history
Open-market buys make up 75% of the 59 scoreable CBT transactions on record between Nov 11, 2025 and Sep 30, 2026. Comparing a filing with the company's own buy/sell mix is how you tell a routine disposal from an unusual accumulation.
Methodology and sources
Scores come from six published, user-adjustable factors (insider role, cluster activity, trade size versus the insider's own history, position impact, filing urgency, and direct versus indirect ownership). The score describes the filing, not future returns. This is not investment advice.
Key facts
- Scoreable Form 4 transactions on record: 59
- Open-market buys: 44
- Sales: 15
- Distinct insiders: 10
- Strongest recent Greediness Score: 96 (Strong)
Primary sources
Related
- Strongest filing
- CBT in the live feed
- How the Greediness Score works
- What is a cluster buy?
- Form 4 transaction codes
The score describes the filing, not future returns. This is not investment advice.