Tritch Stephen R (CIK 1463204) reported 1 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2025-05-06). Recent activity: Buy KOP (17 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2025-05-06 | Koppers Holdings Inc. (KOP) | Director | Buy | 17 | $0 |
来源：SEC Form 4 申报文件 · 截至 2025-05-06