Masterson William F III (CIK 2098902) reported 1 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2025-12-05). Recent activity: Buy CBT (3,486 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2025-12-05 | CABOT CORP (CBT) | Senior Vice President | Buy | 3,486 | $0 |
Source: SEC Form 4 filings · as of 2025-12-05