Feng Xudong (CIK 1463649) reported 2 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-06-04). Recent activity: Sell KOP (5,695 shares), Buy KOP (3,280 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-04 | Koppers Holdings Inc. (KOP) | Director | Sell | 5,695 | $0 |
| 2026-05-11 | Koppers Holdings Inc. (KOP) | Director | Buy | 3,280 | $0 |
Source: SEC Form 4 filings · as of 2026-06-04