AJ

Albert J Neupaver

DELAYED 1 MONTH

Director

Koppers Holdings Inc.

Filings

1

Companies

1

Latest

May 7, 2026

Transactions

Signal

Ticker / Company

Insider

Transaction

Value

Filed

—

Koppers Holdings Inc.

Option Exercise

—

50 sh

May 11 8:07 PM

May 7, 2026