Andrew D. Sandifer - 08 May 2025 Form 4 Insider Report for Koppers Holdings Inc. (KOP)

Role: Director
Signature: /s/Stephanie L. Apostolou, Attorney in Fact
Issuer symbol: KOP
Transactions as of: 08 May 2025
Net transactions value: $0
Form type: 4
Filing time: 09 May 2025, 16:09:16 UTC
Previous filing: 26 Mar 2025
Next filing: 17 Sep 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Sandifer Andrew D	Director	436 SEVENTH AVENUE, PITTSBURGH	/s/Stephanie L. Apostolou, Attorney in Fact	09 May 2025	0001739998

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	Restricted Stock Units	Award	$0	+4,778	+230%	$0.000000	6,857	08 May 2025	Common Stock	4,778		Direct	F1, F2

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

Explanation of Responses:

Id	Content
F1	Restricted Stock Units ("RSUs") represent the right to receive shares of common stock on a one-for-one basis.
F2	The RSUs become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person.

Content

Restricted Stock Units ("RSUs") represent the right to receive shares of common stock on a one-for-one basis.

The RSUs become payable according to the election of payment designation that was filed by the reporting person subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). Such payment will be either lump sum or in annual installments commencing on the May 31st next following the reporting person's separation from service (as defined under the Plan) or, if later, and elected by the reporting person at the time he/she first elects to defer any payment under the Plan, May 31st of the year specified by the reporting person.