Insider · CIK 0001463649
Xudong Feng
Files at: KOP. On EDGAR ↗
Reported trades — common stock
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Jun 3, 2026 GForm 4 → | Jun 4, 4:05 pm EDT | Koppers Holdings Inc.KOP | 5,695 | — | — | 26,489 | — | |
| May 8, 2018 AForm 4 → | May 9, 5:27 pm EDT | Koppers Holdings Inc.KOP | 2,430 | — | — | 26,016 | — | plan? |
| May 10, 2017 AForm 4 → | Jun 2, 11:00 am EDT | Koppers Holdings Inc.KOP | 2,442 | — | — | 23,586 | — | plan? late |
| Aug 18, 2016 SForm 4 → | Aug 23, 7:25 pm EDT | Koppers Holdings Inc.KOP | 500 | $31.79 | $15,895 | 21,144 | −2.31% | plan? late |
| May 11, 2016 AForm 4 → | May 13, 11:01 am EDT | Koppers Holdings Inc.KOP | 3,752 | — | — | 21,644 | — | plan? |
| May 13, 2015 AForm 4 → | May 15, 2:15 pm EDT | Koppers Holdings Inc.KOP | 3,195 | — | — | 17,892 | — | plan? |
| Apr 22, 2015 AForm 4 → | Apr 22, 4:56 pm EDT | Koppers Holdings Inc.KOP | 52 | — | — | 14,697 | — | plan? |
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, 4:19 pm EDT | Koppers Holdings Inc.KOP | 33 | — | — | 445 | — | |
| Jun 15, 2026 AForm 4 → | Jun 17, 4:09 pm EDT | Koppers Holdings Inc.KOP | 34 | — | — | 412 | — |