Louis L. Testoni is Director at Koppers Holdings Inc. (KOP). They have made 1 open-market trade across 1 company since 2016, most recently 2025-05-02.
CIK 0001576713
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
1 open-market purchase totalling $101K since 2016, never a sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| KOP | 45,778 | $2.0M |
Shares reported on the most recent Form 4, priced at the 2025-05-06 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| KOP | BUY | 2016-05-23 | 2016-05-24 | $24.68 | $101K | +9.7% | +21.6% | +28.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.