Koppers: Pzena reports 4.9% ownership stake

Pzena classified its holding as 5% or less, while its clients have rights to dividends and sale proceeds.

Rhea-AI Filing Summary

Koppers Holdings Inc. common stock: Pzena Investment Management, LLC reported beneficial ownership of 926,505 shares, or 4.9% of the class, as of September 30, 2026. Pzena reported sole voting power over 757,368 shares and sole dispositive power over 926,505 shares; shared voting and dispositive power were each 0. Its clients have the right to receive dividends or sale proceeds, and no one client’s interest relates to more than 5% of the class.

Key Figures

Beneficial ownership: 926,505 shares Percent of class: 4.9% Sole voting power: 757,368 shares +3 more

6 metrics

Beneficial ownership 926,505 shares As of September 30, 2026

Percent of class 4.9% Pzena Investment Management, LLC's reported ownership

Sole voting power 757,368 shares Pzena Investment Management, LLC's reported ownership

Sole dispositive power 926,505 shares Pzena Investment Management, LLC's reported ownership

Shared voting power 0 shares Pzena Investment Management, LLC's reported ownership

Shared dispositive power 0 shares Pzena Investment Management, LLC's reported ownership

Key Terms

beneficially owned, Sole Voting Power, Sole Dispositive Power, Shared Voting Power

4 terms

beneficially owned regulatory

"Amount beneficially owned: 926,505"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Sole Voting Power regulatory

"Sole Voting Power 757,368.00"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

Sole Dispositive Power regulatory

"Sole Dispositive Power 926,505.00"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

Shared Voting Power regulatory

"Shared Voting Power 0.00"

Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.

FAQ

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

How many KOP shares does Pzena Investment Management report owning?

Pzena Investment Management, LLC reported beneficial ownership of 926,505 Koppers Holdings Inc. common shares, or 4.9%, as of September 30, 2026. It reported sole dispositive power over 926,505 shares.

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

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Available on EDGAR 10/19/2026 - 10:14 AM EDT Accepted by SEC EDGAR 10/19/2026 - 10:13 AM EDT Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Koppers Holdings Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

50060P106

(CUSIP Number)

09/30/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 50060P106

1

Names of Reporting Persons

PZENA INVESTMENT MANAGEMENT LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 757,368.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 926,505.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

926,505.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

4.9 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Koppers Holdings Inc.
(b)	Address of issuer's principal executive offices: 436 SEVENTH AVENUE, 436 SEVENTH AVENUE, PITTSBURGH, PENNSYLVANIA, 15219.
Item 2.
(a)	Name of person filing: Pzena Investment Management, LLC
(b)	Address or principal business office or, if none, residence: 320 Park Avenue, 8th floor New York, NY 10022
(c)	Citizenship: Delaware
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 50060P106
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 926,505
(b)	Percent of class: 4.9 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 757,368
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 926,505
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. CLIENTS OF THE FILING INVESTMENT MANAGER HAVE THE RIGHT TO RECEIVE AND THE ULTIMATE POWER TO DIRECT THE RECEIPT OF DIVIDENDS FROM, OR THE PROCEEDS OF SALE OF THE SECURITIES REPORTED ON HEREINABOVE. NO INTEREST OF ANY ONE OF SUCH CLIENTS RELATES TO MORE THAN FIVE PERCENT OF THE CLASS.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

PZENA INVESTMENT MANAGEMENT LLC

Signature:	s/Steven Coffey
Name/Title:	Chief Legal Risk Officer & Chief Compliance Officer
Date:	10/19/2026