Stephen G. Lucas - Apr 11, 2025 Form 4 Insider Report for Koppers Holdings Inc. (KOP)

Role: SVP, Culture and Engagement
Signature: /s/Stephanie L. Apostolou, Attorney in Fact
Stock symbol: KOP
Transactions as of: Apr 11, 2025
Transactions value $: -$68,328
Form type: 4
Date filed: 4/14/2025, 04:26 PM
Previous filing: Mar 26, 2025
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	KOP	Common Stock	Options Exercise	$0	+140	+0.47%	$0.00	29.7K	Apr 11, 2025	Direct	F1
transaction	KOP	Common Stock	Tax liability	-$68.3K	-2.74K	-9.25%	$24.91	26.9K	Apr 11, 2025	Direct	F2

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	Options Exercise	$0	-140	-68.29%	$0.00	65	Apr 11, 2025	Common Stock	140		Direct	F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents shares acquired upon release of dividend equivalent rights ("DERs"), as reported in Table II, on a one-for-one basis.
F2	Shares surrendered to the issuer by the reporting person as payment for the tax withholding related to the vesting of time-based restricted stock units ("RSUs").
F3	These DERs were released in connection with the vesting of RSUs granted on April 11, 2022. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock.