Koscinski Joseph S. (CIK 1717992) reported 2 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-03-06). Recent activity: Buy ECVT (11,052 shares), Buy ECVT (27,158 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-06 | Ecovyst Inc. (ECVT) | See Remarks | Buy | 11,052 | $124,998 |
| 2026-02-05 | Ecovyst Inc. (ECVT) | See Remarks | Buy | 27,158 | $0 |
Source: SEC Form 4 filings · as of 2026-03-06