Koppers CEO sells 6,275 shares in Form 4

Koppers Holdings Inc. CEO and director M. Leroy Ball reported several transactions in the company’s common stock on March 2, 2026.

Rhea-AI Filing Summary

Koppers Holdings Inc. CEO and director M. Leroy Ball reported several transactions in the company’s common stock on March 2, 2026. He executed open-market sales totaling 6,275 shares at weighted average prices around $36.53, $37.45, and $37.02, plus a bona fide gift of 325 shares. After these moves, he directly owned 449,948.4007 shares of Koppers common stock.

Insider Trade Summary

Net Seller: 6,275 shares

Net Sell 4 txns

Insider BALL M LEROY

Role CEO

Sold 6,275 shs ($231K)

Type	Security	Shares	Price	Value
Sale	Common Stock	2,184	$36.53	$80K
Sale	Common Stock	328	$37.45	$12K
Sale	Common Stock	3,763	$37.02	$139K
Gift	Common Stock	325	$0.00	$0.00

Holdings After Transaction: Common Stock — 449,948.4007 shares (Direct)

Footnotes (2)

1. F1. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $36.22 to $37.16, inclusive. The reporting person undertakes to provide to the Securities and Exchange Commission, the issuer or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price.
2. F2. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $37.42 to $37.51, inclusive. The reporting person undertakes to provide to the Securities and Exchange Commission, the issuer or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price.

FAQ

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What insider transactions did Koppers (KOP) CEO M. Leroy Ball report?

M. Leroy Ball reported multiple transactions in Koppers common stock on March 2, 2026. He sold 6,275 shares in open-market trades and transferred 325 shares as a bona fide gift, all from his directly held position in the company.

How many Koppers (KOP) shares did the CEO sell and at what prices?

The CEO sold 6,275 Koppers shares in several open-market transactions. Reported weighted average prices included $36.53, $37.45, and $37.02, with detailed price ranges between $36.22 and $37.51, as disclosed in accompanying footnotes to the filing.

Did the Koppers (KOP) CEO make any gifts of stock in this Form 4?

Yes. In addition to open-market sales, the CEO reported a bona fide gift of 325 Koppers common shares at a reported price of $0.00, reflecting a non-cash transfer rather than a market sale, as identified by transaction code G in the filing.

How many Koppers (KOP) shares does the CEO own after these transactions?

Following the reported March 2, 2026 transactions, the CEO’s directly held Koppers common stock position was 449,948.4007 shares. This figure reflects the cumulative impact of the open-market sales and the separate 325-share gift disclosed in the Form 4.

What do the Form 4 footnotes say about Koppers (KOP) CEO stock sale prices?

The footnotes explain that reported prices are weighted averages for multiple trades. For example, some shares sold between $36.22 and $37.16, and others between $37.42 and $37.51, with full per-trade details available upon request from regulators, the issuer, or shareholders.

Were Koppers (KOP) CEO stock sales classified as open-market transactions?

Yes. The filing describes the three sale entries as open-market or private sales of common stock. Each transaction uses code S, with narrative indicating they were sales in the open market or similar private transactions, rather than option exercises or other derivative activities.

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Accepted by SEC EDGAR 03/04/2026 - 04:22 PM EST Learn about SEC filing dates

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

BALL M LEROY

(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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CEO

3. Date of Earliest Transaction (Month/Day/Year)
03/02/2026

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	03/02/2026		S		2,184	D	$36.53(1)	454,364.4007	D
Common Stock	03/02/2026		S		328	D	$37.45(2)	454,036.4007	D
Common Stock	03/02/2026		S		3,763	D	$37.02	450,273.4007	D
Common Stock	03/02/2026		G		325	D	$0	449,948.4007	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

Explanation of Responses:

1. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $36.22 to $37.16, inclusive. The reporting person undertakes to provide to the Securities and Exchange Commission, the issuer or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price.

2. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $37.42 to $37.51, inclusive. The reporting person undertakes to provide to the Securities and Exchange Commission, the issuer or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price.

Remarks:

	/s/ Stephanie L. Apostolou, Attorney in Fact	03/04/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.