Sonja Michelle Wilkerson
CIK: 0001245155
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
Koppers Holdings Inc.
Discretionary Trading P&L
Holdings
Transaction History (16 total)
- Sep 14, 2026KOP
Koppers Holdings Inc.
Award(A)DirectDividend Equivalent Rights
29 shares- - Jun 15, 2026KOP
Koppers Holdings Inc.
Award(A)DirectDividend Equivalent Rights
30 shares- - May 7, 2026KOP
Koppers Holdings Inc.
Award(A)DirectRestricted Stock Units
3.3K shares- - Mar 23, 2026KOP
Koppers Holdings Inc.
Award(A)DirectDividend Equivalent Rights
50 shares- - Mar 23, 2026KOP
Koppers Holdings Inc.
Award(A)DirectDividend Equivalent Rights
25 shares- - Dec 16, 2025KOP
Koppers Holdings Inc.
Award(A)DirectDividend Equivalent Rights
28 shares- - Sep 15, 2025KOP
Koppers Holdings Inc.
Award(A)DirectDividend Equivalent Rights
28 shares- - May 8, 2025KOP
Koppers Holdings Inc.
Award(A)DirectRestricted Stock Units
4.8K shares- - Mar 24, 2025KOP
Koppers Holdings Inc.
Award(A)DirectDividend Equivalent Rights
22 shares- - Mar 24, 2025KOP
Koppers Holdings Inc.
Award(A)DirectDividend Equivalent Rights
17 shares- - Mar 7, 2025KOP
Koppers Holdings Inc.
Award(A)DirectDividend Equivalent Rights
20 shares- - Mar 7, 2025KOP
Koppers Holdings Inc.
Disposition(D)Direct3.5K shares- - Dec 16, 2024KOP
Koppers Holdings Inc.
Award(A)DirectDividend Equivalent Rights
9 shares- - Sep 16, 2024KOP
Koppers Holdings Inc.
Award(A)DirectDividend Equivalent Rights
8 shares- - Mar 25, 2024KOP
Koppers Holdings Inc.
Award(A)DirectDividend Equivalent Rights
20 shares- - May 4, 2023KOP
Koppers Holdings Inc.
Award(A)DirectRestricted Stock Units
3.5K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Sep 14, 2026 | KOP Koppers Holdings Inc. | Award(A) Dividend Equivalent Rights | 29 | - | - | Direct |
| Jun 15, 2026 | KOP Koppers Holdings Inc. | Award(A) Dividend Equivalent Rights | 30 | - | - | Direct |
| May 7, 2026 | KOP Koppers Holdings Inc. | Award(A) Restricted Stock Units | 3,280 | - | - | Direct |
| Mar 23, 2026 | KOP Koppers Holdings Inc. | Award(A) Dividend Equivalent Rights | 50 | - | - | Direct |
| Mar 23, 2026 | KOP Koppers Holdings Inc. | Award(A) Dividend Equivalent Rights | 25 | - | - | Direct |
| Dec 16, 2025 | KOP Koppers Holdings Inc. | Award(A) Dividend Equivalent Rights | 28 | - | - | Direct |
| Sep 15, 2025 | KOP Koppers Holdings Inc. | Award(A) Dividend Equivalent Rights | 28 | - | - | Direct |
| May 8, 2025 | KOP Koppers Holdings Inc. | Award(A) Restricted Stock Units | 4,778 | - | - | Direct |
| Mar 24, 2025 | KOP Koppers Holdings Inc. | Award(A) Dividend Equivalent Rights | 22 | - | - | Direct |
| Mar 24, 2025 | KOP Koppers Holdings Inc. | Award(A) Dividend Equivalent Rights | 17 | - | - | Direct |
| Mar 7, 2025 | KOP Koppers Holdings Inc. | Award(A) Dividend Equivalent Rights | 20 | - | - | Direct |
| Mar 7, 2025 | KOP Koppers Holdings Inc. | Disposition(D) | 3,533 | - | - | Direct |
| Dec 16, 2024 | KOP Koppers Holdings Inc. | Award(A) Dividend Equivalent Rights | 9 | - | - | Direct |
| Sep 16, 2024 | KOP Koppers Holdings Inc. | Award(A) Dividend Equivalent Rights | 8 | - | - | Direct |
| Mar 25, 2024 | KOP Koppers Holdings Inc. | Award(A) Dividend Equivalent Rights | 20 | - | - | Direct |
| May 4, 2023 | KOP Koppers Holdings Inc. | Award(A) Restricted Stock Units | 3,513 | - | - | Direct |
1-16 of 16 transactions
About WILKERSON SONJA MICHELLE
WILKERSON SONJA MICHELLE (SEC CIK 0001245155) files insider reports with the SEC as Director of Koppers Holdings Inc. (KOP).
Signal8 holds 11 ownership filings by WILKERSON SONJA MICHELLE, all Form 4s, filed between Sep 18, 2024 and Sep 15, 2026. Those filings report 16 transactions, from May 4, 2023 to Sep 14, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on WILKERSON SONJA MICHELLE's filings is in PITTSBURGH, PA.
Recent filings by WILKERSON SONJA MICHELLE
- Sep 14, 2026: Grant or award of KOP derivative securities (Form 4, code A).
- Jun 15, 2026: Grant or award of KOP derivative securities (Form 4, code A).
- May 7, 2026: Grant or award of KOP derivative securities (Form 4, code A).
- Mar 23, 2026: Grants or awards of KOP derivative securities (2 lines, Form 4, code A).
- Dec 16, 2025: Grant or award of KOP derivative securities (Form 4, code A).
Other insiders filing for Koppers Holdings Inc. (KOP)
- Feng Xudong, Director
- MOTLEY DAVID L, Director
- Sandifer Andrew D, Director
- BALL M LEROY, CEO
- Lucas Stephen G, SVP, Culture and Engagement
- Sullivan James A., President and CTO