Insider · CIK 0001245155
Sonja Michelle Wilkerson
director
Files at KOP (Koppers Holdings Inc.). First filing -, latest -.
Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
0 / 0
$0 bought, $0 sold
Signals
This insider’s open-market buys and sells, scored.
No scored open-market trades yet.
Transactions
Every row this insider has filed, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 14, 2026 | KOP Koppers Holdings Inc. | AGrant or award Dividend Equivalent Rightsderivative | +29 | $0.00 | $0 | 385 | 27 d ago |
| Dec 16, 2025 | KOP Koppers Holdings Inc. | AGrant or award Dividend Equivalent Rightsderivative | +28 | $0.00 | $0 | 250 | Dec 17, 2025 |
| Sep 15, 2025 | KOP Koppers Holdings Inc. | AGrant or award Dividend Equivalent Rightsderivative | +28 | $0.00 | $0 | 222 | Sep 17, 2025 |
| May 8, 2025 | KOP Koppers Holdings Inc. | AGrant or award Restricted Stock Unitsderivative | +4,778 | $0.00 | $0 | 14,696 | May 9, 2025 |
| Mar 24, 2025 | KOP Koppers Holdings Inc. | AGrant or award Dividend Equivalent Rightsderivative | +17 | $0.00 | $0 | 146 | Mar 26, 2025 |
| Mar 24, 2025 | KOP Koppers Holdings Inc. | AGrant or award Dividend Equivalent Rightsderivative | +22 | $0.00 | $0 | 168 | Mar 26, 2025 |
| Dec 16, 2024 | KOP Koppers Holdings Inc. | AGrant or award Dividend Equivalent Rightsderivative | +9 | $0.00 | $0 | 89 | Dec 17, 2024 |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.