Insider · CIK 0001245155
Sonja Michelle Wilkerson
Files at: KOP. On EDGAR ↗
Reported trades — common stock
No reported common-stock activity in this period.
Reported trades — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 14, 2026 AForm 4 → | Sep 15, 4:20 pm EDT | Koppers Holdings Inc.KOP | 29 | — | — | 385 | — |