Company · CIK 0001315257 · SIC 2400 — Lumber & Wood Products (No Furniture) · NYSE
Koppers Holdings Inc. · KOP
Insider activity reported against this company. All insider holders · On EDGAR ↗
Reported at this company — common stock
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 31, 2026 GForm 4 → | Sep 1, 4:23 pm EDT | M Leroy BallCEO, Director | 200 | — | — | 429,355 | — | |
| Aug 31, 2026 SForm 4 → | Sep 1, 4:23 pm EDT | M Leroy BallCEO, Director | 4,000 | $45.96 | $183,840 | 429,555 | −0.92% | |
| Aug 19, 2026 SForm 4 → | Aug 20, 4:08 pm EDT | M Leroy BallCEO, Director | 3,000 | $45.84 | $137,520 | 433,555 | −0.69% | |
| Aug 12, 2026 SForm 4 → | Aug 13, 5:11 pm EDT | Stephen G LucasSVP, Culture and Engagement | 1,308 | $44.55 | $58,271 | 34,345 | −3.67% | |
| Aug 11, 2026 SForm 4 → | Aug 12, 6:29 pm EDT | James A. SullivanPresident and CTO | 7,500 | $50.00 | $375,000 | 82,898 | −8.30% | |
| Aug 10, 2026 SForm 4 → | Aug 11, 4:25 pm EDT | Bradley A PearceCAO | 2,000 | $51.01 | $102,020 | 41,037 | −4.65% | |
| Aug 7, 2026 SForm 4 → | Aug 11, 4:21 pm EDT | James A. SullivanPresident and CTO | 80,000 | $50.01 | $4,000,921 | 90,398 | −46.9% | |
| Jun 18, 2026 SForm 4 → | Jun 23, 6:27 pm EDT | M Leroy BallCEO, Director | 3,412 | $43.90 | $149,787 | 436,243 | −0.78% | |
| Jun 11, 2026 GForm 4 → | Jun 15, 4:10 pm EDT | M Leroy BallCEO, Director | 300 | — | — | 439,655 | — | |
| Jun 11, 2026 SForm 4 → | Jun 15, 4:10 pm EDT | M Leroy BallCEO, Director | 4,141 | $41.34 | $171,189 | 439,955 | −0.93% | |
| Jun 3, 2026 GForm 4 → | Jun 4, 4:05 pm EDT | Xudong FengDirector | 5,695 | — | — | 26,489 | — |
Reported at this company — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 14, 2026 AForm 4 → | Sep 15, 4:20 pm EDT | Sonja Michelle WilkersonDirector | 29 | — | — | 385 | — | |
| Sep 14, 2026 AForm 4 → | Sep 15, 4:19 pm EDT | Xudong FengDirector | 33 | — | — | 445 | — | |
| Sep 14, 2026 AForm 4 → | Sep 15, 4:17 pm EDT | David L MotleyDirector | 20 | — | — | 316 | — | |
| Sep 14, 2026 AForm 4 → | Sep 15, 4:15 pm EDT | Andrew D SandiferDirector | 14 | — | — | 117 | — | |
| Jun 15, 2026 AForm 4 → | Jun 17, 4:09 pm EDT | Xudong FengDirector | 34 | — | — | 412 | — | |
| Jun 15, 2026 AForm 4 → | Jun 17, 4:07 pm EDT | Sonja Michelle WilkersonDirector | 30 | — | — | 356 | — | |
| Jun 15, 2026 AForm 4 → | Jun 17, 4:05 pm EDT | David L MotleyDirector | 21 | — | — | 296 | — | |
| Jun 15, 2026 AForm 4 → | Jun 17, 4:04 pm EDT | Andrew D SandiferDirector | 14 | — | — | 103 | — |