PSU vesting gives Koppers (NYSE: KOP) SVP new shares, tax share surrender

Rhea-AI Filing Summary

Koppers Holdings Inc. senior vice president Stephen G. Lucas reported equity compensation activity tied to previously granted performance share units. On February 26, 2026, he acquired 5,298 shares of common stock at $0.00 per share through a grant or award and ended with 35,653 common shares held directly. He also acquired 127 dividend equivalent rights and exercised 127 of these derivative awards, each economically equal to one common share. In a separate transaction, he disposed of 2,536 common shares at $37.24 per share, surrendering them to the issuer to cover tax withholding related to the vesting of the performance share units.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Lucas Stephen G

(Last) (First) (Middle)

436 SEVENTH AVENUE

(Street)

PITTSBURGH PA 15219

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Koppers Holdings Inc. [ KOP ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP, Culture and Engagement

3. Date of Earliest Transaction (Month/Day/Year)
02/26/2002

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock(1)	02/26/2026		A		5,298	A	$0	38,062	D
Common Stock	02/26/2002		M		127(2)	A	$0(2)	38,189	D
Common Stock	02/26/2026		F		2,536	D	$37.24(3)	35,653	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Dividend Equivalent Rights	(4)	02/26/2026		A		127		(4)	(4)	Common Stock	127	$0	229	D
Dividend Equivalent Rights	(5)	02/26/2026		M			127(5)	(5)	(5)	Common Stock	127	$0	102	D

Explanation of Responses:

1. On January 4, 2023, the reporting person was granted performance share units ("PSUs") for which the performance criteria for the measurement period from January 1, 2023 through December 31, 2025 have been satisfied.

2. Represents shares acquired upon release of dividend equivalent rights ("DERs"), as reported in Table II, on a one-for-one basis.

3. Shares surrendered to the issuer by the reporting person as payment for the tax withholding related to the vesting of PSUs.

4. The DERs accrued with respect to additional PSUs credited to the reporting person with respect to PSUs granted on January 4, 2023. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock.

5. These DERs were released in connection with the vesting of PSUs granted on January 4, 2023. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock.

Remarks:

	/s/ Stephanie L. Apostolou, Attorney in Fact	03/02/2026
	** Signature of Reporting Person	Date
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