Koppers Holdings Inc. 8-K/A

What Happened Koppers Holdings Inc. (NYSE: KOP) filed an amended Current Report on Form 8‑K/A on May 7, 2026 to update a report with an earliest event date of November 5, 2025. The filing references Item 5.02 (Departure of Directors or Certain Officers), and the document is signed by Bradley A. Pearce, identified as Interim Chief Financial Officer, Treasurer and Chief Accounting Officer.

Key Details

• Filing: Form 8‑K/A, filed May 7, 2026 (amending the Current Report dated November 5, 2025). Accession No.: 0001315257-26-000030.
• Item reported: Item 5.02 — “Departure of Directors or Certain Officers” (the amendment relates to that prior report).
• Signatory: Bradley A. Pearce signed the filing as Interim CFO, Treasurer and Chief Accounting Officer.
• Exchange/ticker: Common stock trades as KOP on the New York Stock Exchange.

Why It Matters Officer or director changes are material governance events that can affect management continuity, financial reporting and investor confidence. This amendment confirms the company’s previously reported Item 5.02 matter and shows an interim finance leader signed the amended filing. Retail investors should review the original Nov. 5, 2025 8‑K (and any related company announcements) for full details of the personnel change and monitor subsequent filings for permanent appointments or additional disclosures.