Humble Patti A. (CIK 2135878) reported 2 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-09-14). Recent activity: Buy ECVT (24,875 shares), Buy ECVT (9,099 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-14 | Ecovyst Inc. (ECVT) | Director | Buy | 24,875 | $249,994 |
| 2026-05-27 | Ecovyst Inc. (ECVT) | Director | Buy | 9,099 | $123,837 |
来源：SEC Form 4 申报文件 · 截至 2026-09-14