WILKERSON SONJA MICHELLE has filed 23 insider transactions across 1 company since April 2023.
Most recent transaction: a grant/award of 25 shares of Koppers Holdings Inc. ($KOP) on March 23, 2026.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 23, 2026 | Koppers Holdings Inc. | $KOP | WILKERSON SONJA MICHELLE | Director | A | Dividend Equivalent Rights | 25 | $0.00 | 325.5030 | 20,414,000 | 8.45% | 0.00% |
| March 23, 2026 | Koppers Holdings Inc. | $KOP | WILKERSON SONJA MICHELLE | Director | A | Dividend Equivalent Rights | 50 | $0.00 | 300.1530 | 20,414,000 | 19.99% | 0.00% |
| Dec. 16, 2025 | Koppers Holdings Inc. | $KOP | WILKERSON SONJA MICHELLE | Director | A | Dividend Equivalent Rights | 28 | $0.00 | 250.1530 | 20,414,000 | 12.78% | 0.00% |
| Sept. 15, 2025 | Koppers Holdings Inc. | $KOP | WILKERSON SONJA MICHELLE | Director | A | Dividend Equivalent Rights | 28 | $0.00 | 221.8090 | 21,291,000 | 14.60% | 0.00% |
| May 8, 2025 | Koppers Holdings Inc. | $KOP | WILKERSON SONJA MICHELLE | Not found | A | Restricted Stock Units | 4778 | $0.00 | 14,696.0000 | 21,291,000 | 48.18% | 0.02% |
| March 24, 2025 | Koppers Holdings Inc. | $KOP | WILKERSON SONJA MICHELLE | Not found | A | Dividend Equivalent Rights | 22 | $0.00 | 168.0360 | 21,291,000 | 15.22% | 0.00% |
| March 24, 2025 | Koppers Holdings Inc. | $KOP | WILKERSON SONJA MICHELLE | Not found | A | Dividend Equivalent Rights | 17 | $0.00 | 145.8340 | 21,291,000 | 13.20% | 0.00% |
| March 7, 2025 | Koppers Holdings Inc. | $KOP | WILKERSON SONJA MICHELLE | Not found | A | Dividend Equivalent Rights | 20 | $0.00 | 128.3400 | 21,291,000 | 18.70% | 0.00% |
| March 7, 2025 | Koppers Holdings Inc. | $KOP | WILKERSON SONJA MICHELLE | Not found | D | Common Stock | 3533 | $0.00 | 17,216.0000 | 21,291,000 | 17.03% | 0.02% |
| May 4, 2023 | Koppers Holdings Inc. | $KOP | WILKERSON SONJA MICHELLE | Not found | A | Restricted Stock Units | 3513 | $0.00 | 9,918.0000 | 21,313,000 | 54.85% | 0.02% |
| March 25, 2024 | Koppers Holdings Inc. | $KOP | WILKERSON SONJA MICHELLE | Not found | A | Dividend Equivalent Rights | 20 | $0.00 | 108.6150 | 21,539,000 | 22.57% | 0.00% |
| Dec. 16, 2024 | Koppers Holdings Inc. | $KOP | WILKERSON SONJA MICHELLE | Not found | A | Dividend Equivalent Rights | 9 | $0.00 | 88.6150 | 21,448,000 | 11.87% | 0.00% |
| Sept. 16, 2024 | Koppers Holdings Inc. | $KOP | WILKERSON SONJA MICHELLE | Not found | A | Dividend Equivalent Rights | 8 | $0.00 | 79.2160 | 21,539,000 | 11.77% | 0.00% |
| June 10, 2024 | Koppers Holdings Inc. | $KOP | WILKERSON SONJA MICHELLE | Not found | A | Dividend Equivalent Rights | 7 | $0.00 | 70.8710 | 21,539,000 | 11.62% | 0.00% |
| May 2, 2024 | Koppers Holdings Inc. | $KOP | WILKERSON SONJA MICHELLE | Not found | M | Dividend Equivalent Rights | 20 | $0.00 | 63.4940 | 21,539,000 | 23.95% | 0.00% |
| May 2, 2024 | Koppers Holdings Inc. | $KOP | WILKERSON SONJA MICHELLE | Not found | M | Common Stock | 20 | $0.00 | 20,749.0000 | 21,539,000 | 0.10% | 0.00% |
| May 2, 2024 | Koppers Holdings Inc. | $KOP | WILKERSON SONJA MICHELLE | Not found | A | Restricted Stock Units | 2079 | $0.00 | 6,405.0000 | 21,539,000 | 48.06% | 0.01% |
| March 25, 2024 | Koppers Holdings Inc. | $KOP | WILKERSON SONJA MICHELLE | Not found | A | Dividend Equivalent Rights | 6 | $0.00 | 63.4940 | 21,539,000 | 9.77% | 0.00% |
| March 25, 2024 | Koppers Holdings Inc. | $KOP | WILKERSON SONJA MICHELLE | Not found | A | Dividend Equivalent Rights | 20 | $0.00 | 83.4940 | 21,539,000 | 31.50% | 0.00% |
| Sept. 11, 2023 | Koppers Holdings Inc. | $KOP | WILKERSON SONJA MICHELLE | Director | A | Dividend Equivalent Rights | 7 | $0.00 | 51.9080 | 21,313,000 | 15.51% | 0.00% |
| June 12, 2023 | Koppers Holdings Inc. | $KOP | WILKERSON SONJA MICHELLE | Director | A | Dividend Equivalent Rights | 8 | $0.00 | 44.9370 | 21,313,000 | 21.45% | 0.00% |
| May 4, 2023 | Koppers Holdings Inc. | $KOP | WILKERSON SONJA MICHELLE | Director | A | Common Stock | 3513 | $0.00 | 20,729.0000 | 21,313,000 | 20.41% | 0.02% |
| April 27, 2023 | Koppers Holdings Inc. | $KOP | WILKERSON SONJA MICHELLE | Director | A | Dividend Equivalent Rights | 37 | $0.00 | 37.0000 | 21,313,000 | 9999.99% | 0.00% |