Jimmi Sue Smith - 16 Dec 2025 Form 4 Insider Report for Koppers Holdings Inc. (KOP)

Signature
/s/ Stephanie L. Apostolou, Attorney in Fact
Issuer symbol
KOP
Transactions as of
16 Dec 2025
Net transactions value
$0
Form type
4
Filing time
17 Dec 2025, 17:55:00 UTC
Previous filing
07 Jan 2025
Next filing
06 Jan 2026

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Smith Jimmi Sue Chief Financial Officer 436 SEVENTH AVENUE, PITTSBURGH /s/ Stephanie L. Apostolou, Attorney in Fact 17 Dec 2025 0001684691

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction KOP Dividend Equivalent Rights Award $0 +222 +209% $0.000000 328 16 Dec 2025 Common Stock 222 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The dividend equivalent rights ("DERs") accrued with respect to additional time-based and performance-based restricted stock units ("RSUs" and "PSUs", respectively) credited to the reporting person. Of this total, 183 DERs accrued with respect to RSUs granted on January 4, 2022, January 4, 2023, January 4, 2024, and January 3, 2025, and 39 DERs accrued with respect to PSUs granted on January 4, 2023. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock.