[144] Koppers Holdings, Inc. SEC Filing

Rhea-AI Filing Summary

Koppers Holdings, Inc. filed a Form 144 reporting a proposed sale of 2,552 shares of common stock through Fidelity Brokerage Services LLC with an aggregate market value of $71,073.20. The filing lists the approximate date of sale as 08/11/2025 and records 19,715,527 shares outstanding for the issuer in the form.

The securities to be sold were acquired by restricted stock vesting as compensation on 06/13/2024 (955 shares), 01/05/2025 (618 shares) and 06/13/2025 (979 shares). The filer reports no securities sold in the past three months and affirms they are not aware of undisclosed material adverse information.

Insights

Securities Analyst

TL;DR: Routine small insider sale reported: 2,552 shares worth $71k; appears immaterial to company capitalization.

The Form 144 documents a proposed sale of 2,552 common shares through Fidelity with an aggregate value of $71,073.20 and notes 19,715,527 shares outstanding. The filing shows the shares were acquired via restricted stock vesting and indicates no sales in the prior three months. Based on the absolute amounts disclosed, this filing reads as a routine insider liquidity event rather than a material corporate development.

Corporate Governance Expert

TL;DR: Disclosure follows Rule 144 mechanics; seller affirms no undisclosed material information and lists vesting dates.

The notice supplies the broker, the aggregate market value, acquisition dates and nature of acquisition (restricted stock vesting). It also includes the seller's certification regarding material nonpublic information and mentions trading-plan considerations in the form language. The absence of a named seller in the provided fields limits identification, but the filing content aligns with standard compliance disclosures for proposed insider sales.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	2552	71073.20	19715527	08/11/2025	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	06/13/2024	Restricted Stock Vesting	Issuer			955	06/13/2024	Compensation
Common	01/05/2025	Restricted Stock Vesting	Issuer			618	01/05/2025	Compensation
Common	06/13/2025	Restricted Stock Vesting	Issuer			979	06/13/2025	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks

Date of Notice

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does the KOP Form 144 report?

The form reports a proposed sale of 2,552 common shares valued at $71,073.20 through Fidelity with an approximate sale date of 08/11/2025.

Who is selling the shares in the Koppers (KOP) Form 144?

The filing does not provide the name of the person for whose account the securities are to be sold; that field is not completed in the provided content.

How were the securities being sold originally acquired?

All listed shares were acquired through restricted stock vesting as compensation on 06/13/2024 (955 shares), 01/05/2025 (618 shares), and 06/13/2025 (979 shares).

Were any securities sold by the filer in the past three months?

The filing states Nothing to Report for securities sold during the past three months.

What representations does the filer make on Form 144?

By signing, the filer represents they do not know any material adverse information about the issuer that has not been publicly disclosed and references trading-plan/10b5-1 considerations in the form language.