Koppers (NYSE: KOP) insider details 7,500-share planned sale and prior 80,000-share trade

Rhea-AI Filing Summary

Koppers Holdings (symbol KOP) reports that insider James A. Sullivan plans to sell up to 7,500 shares of common stock through Fidelity Brokerage Services LLC on the NYSE, tied to prior restricted stock vesting awards from 2016–2025. The filing also lists a recent sale of 80,000 common shares for $4,000,668.23 on August 7, 2026. Shares outstanding were 18,911,568, providing context for the size of these transactions.

Key Figures

Planned shares to be sold: 7,500 shares Planned sale value: $375,000.00 Shares outstanding: 18,911,568 shares +2 more

5 metrics

Planned shares to be sold 7,500 shares Common stock planned for sale under Rule 144

Planned sale value $375,000.00 Aggregate value associated with 7,500 common shares

Shares outstanding 18,911,568 shares Total common shares outstanding used as context

Recent shares sold 80,000 shares Common stock sale on 08/07/2026

Proceeds from recent sale $4,000,668.23 Total consideration for 80,000 common shares sold

Key Terms

Rule 144, Restricted Stock Vesting, compensation

3 terms

Rule 144 regulatory

"144: Securities Information Common | Fidelity Brokerage Services LLC"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock Vesting financial

"Common | 03/03/2016 | Restricted Stock Vesting | Issuer"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

compensation financial

"03/06/2020 | Restricted Stock Vesting | Issuer | | | 166 | 03/06/2020 | Compensation"

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

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Available on EDGAR 08/11/2026 - 01:02 PM Accepted by SEC EDGAR 08/11/2026 - 01:02 PM Learn about SEC filing dates

FAQ

What does KOP’s Rule 144 notice disclose about planned stock sales?

The notice states that 7,500 KOP common shares are planned for sale through Fidelity Brokerage Services LLC on the NYSE, relating to previously vested restricted stock compensation awards.

How many KOP shares did James A. Sullivan recently sell under this Rule 144 context?

James A. Sullivan is shown as having sold 80,000 KOP common shares on August 7, 2026 for total proceeds of $4,000,668.23, as reported in the three‑month sales history section.

What is the size of the planned KOP stock sale relative to shares outstanding?

The planned sale covers 7,500 KOP common shares, while total shares outstanding are listed as 18,911,568. This figure is a baseline for context and not the amount being sold.

What is the reported value of the KOP shares planned for sale under Rule 144?

The planned sale of 7,500 KOP common shares is associated with an indicated aggregate value of $375,000.00, based on the figures provided in the Rule 144 securities information section.

What compensation-related events underpin the KOP shares in this Rule 144 filing?

The filing links the shares to multiple Restricted Stock Vesting events from 2016 through 2025, each labeled as issued by the Issuer as compensation in common stock.

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	7500	375000.00	18911568	08/11/2026	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	03/03/2016	Restricted Stock Vesting	Issuer			1120	03/03/2016	Compensation
Common	02/28/2020	Restricted Stock Vesting	Issuer			646	02/28/2020	Compensation
Common	03/02/2020	Restricted Stock Vesting	Issuer			438	03/02/2020	Compensation
Common	03/03/2020	Restricted Stock Vesting	Issuer			3084	03/03/2020	Compensation
Common	03/06/2020	Restricted Stock Vesting	Issuer			166	03/06/2020	Compensation
Common	04/02/2020	Restricted Stock Vesting	Issuer			1	04/02/2020	Compensation
Common	01/05/2025	Restricted Stock Vesting	Issuer			2045	01/05/2025	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
James A. Sullivan 436 Seventh Avenue Pittsburgh PA 15219	Common	08/07/2026	80000	4000668.23

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)