Wilkerson Sonja Michelle

Wilkerson Sonja Michelle is listed in filings as Director at Koppers Holdings Inc.. This profile follows SEC Form 4 activity through May 11, 2026, including 11 public disclosures. Recent filings connect the profile to Koppers Holdings Inc. (KOP). The current snapshot covers public activity from Dec 17, 2024 to May 11, 2026. The page organizes purchases, sales, issuer links, reported share activity, and filing evidence for review as public disclosure data.