Koppers CEO sells 3,000 shares at $45.84

Koppers Holdings Inc. (KOP) reported that CEO and director M. Leroy Ball sold 3,000 shares of common stock on 2026-08-19 in an open market or private transaction at $45.84 per share.

Rhea-AI Filing Summary

Koppers Holdings Inc. (KOP) reported that CEO and director M. Leroy Ball sold 3,000 shares of common stock on 2026-08-19 in an open market or private transaction at $45.84 per share. After this sale, Ball directly owns 433,555.4007 shares, which include 312 shares acquired through the company’s Employee Stock Purchase Plan on June 30, 2026.

Insider Trade Summary

Net Seller: 3,000 shares

Net Sell 1 txn

Insider BALL M LEROY

Role CEO

Sold 3,000 shs ($138K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1	3,000	$45.84	$138K

Holdings After Transaction: Common Stock — 433,555.4007 shares (Direct)

Footnotes (1)

1. F1. Includes 312 shares of Koppers Holdings Inc. common stock acquired pursuant to the Koppers Holdings Inc. Employee Stock Purchase Plan on June 30, 2026. These acquisitions were exempt under both Rule 16b-3(c) and Rule 16b-3(d).

Key Figures

Shares sold: 3,000 shares Sale price per share: $45.84 per share Shares owned after transaction: 433,555.4007 shares +1 more

4 metrics

Shares sold 3,000 shares Common Stock sold on 2026-08-19

Sale price per share $45.84 per share Price for the 3,000-share sale on 2026-08-19

Shares owned after transaction 433,555.4007 shares Direct ownership by CEO M. Leroy Ball following the sale

ESPP shares included in holdings 312 shares Common stock acquired under the Employee Stock Purchase Plan on June 30, 2026

Key Terms

Employee Stock Purchase Plan, Rule 16b-3(c), Rule 16b-3(d)

3 terms

Employee Stock Purchase Plan financial

"common stock acquired pursuant to the Koppers Holdings Inc. Employee Stock Purchase Plan"

An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.

Rule 16b-3(c) regulatory

"These acquisitions were exempt under both Rule 16b-3(c) and Rule 16b-3(d)"

An SEC rule that lets corporate insiders avoid automatic "short‑swing" profit recovery when they buy or sell their company’s stock under a pre‑approved, written plan that meets specific conditions. For investors, it matters because it clarifies when insider trades are treated as routine, reducing legal uncertainty and helping distinguish trades made for ordinary compensation or pre‑planned reasons from those that might signal opportunistic or timely insider advantage.

Rule 16b-3(d) regulatory

"These acquisitions were exempt under both Rule 16b-3(c) and Rule 16b-3(d)"

Rule 16b-3(d) is a narrow SEC safe-harbor that shields company insiders (officers, directors and large shareholders) from liability for short‑swing profits when their buys or sells of company stock are made under a pre-established, written plan or contract that removes the insider’s ability to time trades. For investors, this matters because it permits predictable, automated insider transactions — like scheduled sales for diversification or payroll withholding — without triggering forced disgorgement, so such planned trades are treated differently from opportunistic insider trading.

FAQ

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

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

Koppers Holdings Inc. reported that CEO M. Leroy Ball sold 3,000 shares of common stock on 2026-08-19 in a sale categorized as an open market or private transaction at $45.84 per share.

How many KOP shares does CEO M. Leroy Ball own after the reported sale?

After the 3,000-share sale, CEO M. Leroy Ball directly owns 433,555.4007 shares of Koppers Holdings Inc. common stock, according to the filing’s post-transaction holdings figure.

At what price were the KOP shares sold by CEO M. Leroy Ball?

The 3,000 Koppers Holdings Inc. (KOP) shares sold by CEO M. Leroy Ball on 2026-08-19 were transacted at a price of $45.84 per share, described as a sale in an open market or private transaction.

Does the CEO’s reported KOP share balance include Employee Stock Purchase Plan shares?

Yes. The reported post-transaction balance of 433,555.4007 shares for CEO M. Leroy Ball includes 312 shares of Koppers Holdings Inc. common stock acquired under the Employee Stock Purchase Plan on June 30, 2026.

Was the KOP CEO’s transaction reported as a buy or a sell?

The transaction reported for Koppers Holdings Inc. (KOP) CEO M. Leroy Ball was a sale of 3,000 shares of common stock, coded as a disposition (transaction code S and acquired/disposed code D).

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

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Accepted by SEC EDGAR 08/20/2026 - 04:08 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)
08/19/2026

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	08/19/2026		S		3,000	D	$45.84	433,555.4007(1)	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. Includes 312 shares of Koppers Holdings Inc. common stock acquired pursuant to the Koppers Holdings Inc. Employee Stock Purchase Plan on June 30, 2026. These acquisitions were exempt under both Rule 16b-3(c) and Rule 16b-3(d).

Remarks:

	/s/ Stephanie L. Apostolou, Attorney in Fact	08/20/2026
	** 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)