Sonja Michelle Wilkerson - 04 May 2023 Form 4/A - Amendment Insider Report for Koppers Holdings Inc. (KOP)

Role: Director
Signature: /s/ Stephanie L. Apostolou, Attorney in Fact
Issuer symbol: KOP
Transactions as of: 04 May 2023
Net transactions value: $0
Form type: 4/A - Amendment
Filing time: 11 Mar 2025, 18:39:35 UTC
Date Of Original Report: 08 May 2023
Previous filing: 01 May 2023
Next filing: 14 Jun 2023
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	KOP	Common Stock	Disposed to Issuer		-3,533	-17%		17,216	07 Mar 2025	Direct	F1

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	+3,513	+55%	$0.000000	9,918	04 May 2023	Common Stock	3,513		Direct	F2, F3, F4
transaction	KOP	Dividend Equivalent Rights	Award	$0	+20	+23%	$0.000000	109	25 Mar 2024	Common Stock	20		Direct	F5, F6
transaction	KOP	Dividend Equivalent Rights	Award	$0	+20	+19%	$0.000000	128	07 Mar 2025	Common Stock	20		Direct	F4, F7

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

Explanation of Responses:

Id	Content
F1	As disclosed in this Form 4 amendment, the reporting person inadvertently reported 3,513 RSUs and 20 DERs in Table I in the reporting person's previously-filed Forms 4. In fact, as reported in this amendment, the reporting person directly owns 17,216 shares of common stock.
F2	Restricted Stock Units ("RSUs") represent the right to receive shares of common stock on a one-for-one basis.
F3	This Form 4 amendment is being filed to correctly report in Table II the award of 3,513 RSUs to the reporting person that are subject to the Koppers Holdings Inc. Director Deferred Compensation Plan (the "Plan"). These RSUs were inadvertently reported in Table I on the reporting person's Form 4 filed May 8, 2023.
F4	Once released, the RSUs corresponding to these dividend equivalent rights ("DERs") will become payable according to the election of payment designation that was filed by the reporting person subject to 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.
F5	The DERs accrued with respect to additional RSUs credited to the reporting person with respect to RSUs granted on May 4, 2023. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock.
F6	This Form 4 amendment is being filed to correctly report in Table II the accrual of 20 DERs to the reporting person with respect to RSUs granted to the reporting person on May 4, 2023. These DERs were inadvertently reported in Table I as the conversion of a derivative security on the reporting person's Form 4 filed May 6, 2024.
F7	The DERs accrued with respect to additional time-based RSUs credited to the reporting person with respect to deferred compensation. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock.