Koppers CEO sells 3,412 shares in open-market trade

Koppers Holdings Inc. director and CEO M. Leroy Ball reported an open-market sale of 3,412 shares of common stock at $43.90 per share.

Rhea-AI Filing Summary

Koppers Holdings Inc. director and CEO M. Leroy Ball reported an open-market sale of 3,412 shares of common stock at $43.90 per share. After this transaction, he continues to directly own 436,243.4007 common shares, showing he retains a substantial equity position in the company.

Insights

Insider trading and corporate governance analyst

CEO’s open-market sale is relatively small versus his remaining stake.

The Form 4 shows Koppers CEO M. Leroy Ball executed an open-market sale of 3,412 common shares at $43.90 per share. There are no derivative exercises, tax withholdings, or gifts reported in this filing.

Following the sale, he holds 436,243.4007 common shares directly, indicating that most of his reported equity exposure remains intact. With only one straightforward transaction and no 10b5-1 plan disclosure in the excerpt, this looks like a routine portfolio move rather than a structural change in alignment.

Insider Trade Summary

Net Seller: 3,412 shares

Net Sell 1 txn

Insider BALL M LEROY

Role CEO

Sold 3,412 shs ($150K)

Type	Security	Shares	Price	Value
Sale	Common Stock	3,412	$43.90	$150K

Holdings After Transaction: Common Stock — 436,243.4007 shares (Direct)

Key Figures

Shares sold: 3,412 shares Sale price per share: $43.90 per share Shares held after transaction: 436,243.4007 shares +1 more

4 metrics

Shares sold 3,412 shares Open-market sale of common stock on 2026-06-18

Sale price per share $43.90 per share Price for the 3,412 common shares sold

Shares held after transaction 436,243.4007 shares Direct common stock ownership following the sale

Net buy/sell shares -3,412 shares Net effect of reported insider trading activity in this filing

Key Terms

open-market sale, Common Stock, Form 4

3 terms

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Common Stock financial

"security_title": "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

Form 4 regulatory

"INSIDER FILING DATA (Form 4):"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

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

M. Leroy Ball reported selling 3,412 shares of Koppers common stock in an open-market transaction at $43.90 per share. This Form 4 filing reflects a straightforward sale of existing holdings, with no associated option exercises or derivative transactions disclosed.

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

The CEO sold 3,412 common shares of Koppers Holdings Inc. at $43.90 per share. These figures come directly from the Form 4 transaction details and represent a single open-market sale on the reported transaction date.

How many Koppers (KOP) shares does the CEO hold after this Form 4 sale?

After the reported transaction, M. Leroy Ball directly owns 436,243.4007 Koppers common shares. This post-transaction holding shows he continues to maintain a significant equity position in the company despite the open-market sale disclosed.

Was the Koppers (KOP) CEO’s transaction an open-market sale?

Yes. The Form 4 classifies the transaction as an open-market sale of common stock with code “S.” This indicates shares were sold into the market rather than surrendered for taxes, gifted, or exercised from options in this particular filing.

Does this Koppers (KOP) Form 4 include any derivative or option exercises?

No. The insider data show no derivative transactions or option exercises associated with this filing. The derivative summary is empty, and the only reported activity is a non-derivative common stock sale by the CEO on the specified date.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/23/2026 - 06:27 PM EDT 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 PENNSYLVANIA 15219

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/18/2026

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

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

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

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	06/18/2026		S		3,412	D	$43.9	436,243.4007	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:

Remarks:

	/s/ Stephanie L. Apostolou, Attorney in Fact	06/23/2026
	** 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.
* Form 4: SEC 1474 (03-26)