Over the last 12 months, Koppers Holdings insiders reported no purchases and 2 sales totaling $321K across SEC Form 4 filings.
| Date | Insider | Type | Shares | Avg price | Value | Δ stake | Marks |
|---|---|---|---|---|---|---|---|
| Jun 18, 2026 | BALL M LEROYCEO · O·D | ▼ Sale | 3,412 | $43.9 | $150K | -0.8% | — |
| Jun 11, 2026 | BALL M LEROYCEO · O·D | ▼ Sale | 4,141 | $41.34 | $171K | -0.9% | — |
Corporate insiders — officers, directors and 10%+ owners — must report their trades to the SEC on Form 4 within two business days. We group each filing's transactions into one economic event (a laddered 10b5-1 sale is one event, not 25 rows), flag pre-arranged plans and late filings, and link every event to its AI-scored article in the $KOP feed.