January 5, 2026 · Form 4 insider transaction
Apostolou Stephanie L bought 9,876 shares of KOPPERS HOLDINGS INC at $0.00 per share, a transaction worth N/A. The trade was recorded as grant or award and disclosed on an SEC Form 4, filed 1 day after the transaction.
The reporting person was awarded time-based restricted stock units ("RSUs") on January 5, 2026, which will vest in annual installments of 25 percent over four years.; Includes 828 shares of Koppers Holdings Inc. common stock acquired pursuant to the Koppers Holdings Inc. Employee Stock Purchase Plan on March 31, 2025 and June 30, 2025. These acquisitions were exempt under both Rule 16b-3(c) and Rule 16b-3(d).