BALL M LEROY 4

What Happened

• M. LeRoy Ball, CEO and Director of Koppers Holdings Inc. (KOP), sold 3,412 shares in an open-market/private sale on June 18, 2026. The shares were sold at $43.90 each for a total proceeds of $149,787. This was a sale (S) transaction; sales are common for liquidity or portfolio management and do not by themselves indicate the insider's view of the company.

Key Details

• Transaction date and price: 2026-06-18 — 3,412 shares at $43.90 per share.
• Total value: $149,787.
• Shares owned after transaction: Not disclosed in the provided filing.
• Footnotes: The filing does not disclose a 10b5-1 plan, tax-withholding, or other special footnotes for this trade.
• Filing timeliness: Form 4 was filed on 2026-06-23 for the 2026-06-18 transaction — this appears to be filed after the typical 2-business-day reporting window (i.e., late).

Context

• This was a straightforward sale of common shares (transaction code S). Such open-market sales are routine for executives and can be driven by many personal or portfolio reasons; they are not definitive indicators of company prospects. Purchases tend to be more informative about insider confidence than single sales.