Laura J. Posadas - 05 Nov 2025 Form 3 Insider Report for Koppers Holdings Inc. (KOP)

Role
Director
Signature
/s/ Stephanie L. Apostolou, Attorney in Fact
Issuer symbol
KOP
Transactions as of
05 Nov 2025
Net transactions value
$0
Form type
3
Filing time
07 Nov 2025, 16:16:43 UTC
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Posadas Laura J Director 436 SEVENTH AVENUE, PITTSBURGH /s/ Stephanie L. Apostolou, Attorney in Fact 07 Nov 2025 0002092070

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
holding KOP Commmon Stock 0 05 Nov 2025 Direct
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Remarks:

Attachment Exhibit 24 - Limited Power of Attorney