# EDGAR Filing Document

**Accession Number:** 0001315257
**File Stem:** 0001315257-26-000017
**Filing Date:** 2026-3
**Character Count:** 7635
**Document Hash:** 5b7583eb513e54efe01305e3f4b8f54d
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001315257-26-000017.hdr.sgml**: 20260318

**ACCESSION NUMBER**: 0001315257-26-000017

**CONFORMED SUBMISSION TYPE**: 8-K/A

**PUBLIC DOCUMENT COUNT**: 11

**CONFORMED PERIOD OF REPORT**: 20260105

**ITEM INFORMATION**: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20260318

**DATE AS OF CHANGE**: 20260318

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Koppers Holdings Inc.
- **CENTRAL INDEX KEY:** 0001315257
- **STANDARD INDUSTRIAL CLASSIFICATION:** LUMBER & WOOD PRODUCTS (NO FURNITURE) [2400]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 201878963
- **STATE OF INCORPORATION:** PA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-32737
- **FILM NUMBER:** 26769957

**BUSINESS ADDRESS:**
- **STREET 1:** 436 SEVENTH AVENUE
- **CITY:** PITTSBURGH
- **STATE:** PA
- **ZIP:** 15219
- **BUSINESS PHONE:** 412-227-2001

**MAIL ADDRESS:**
- **STREET 1:** 436 SEVENTH AVENUE
- **CITY:** PITTSBURGH
- **STATE:** PA
- **ZIP:** 15219

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** KI Holdings Inc.
- **DATE OF NAME CHANGE:** 20050124

?xml version='1.0' encoding='ASCII'? kop-20260105

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

_________________________________________________________

**FORM 8-K/A**

**(Amendment No. 1)**

_________________________________________________________

**CURRENT REPORT**

**Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934**

**Date of Report (Date of earliest event reported): January 5, 2026**

_________________________________________________________

**KOPPERS HOLDINGS INC.**

**(Exact name of registrant as specified in its charter)**

_________________________________________________________

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| | | |
|:---|:---|:---|
| **Pennsylvania** | **1-32737** | **20-1878963** |
| **(State or other jurisdiction<br>of incorporation)** | **(Commission File Number)** | **(IRS Employer<br>Identification No.)** |
| **436 Seventh Avenue** | | |
| **Pittsburgh, Pennsylvania** | | **15219** |
| **(Address of principal executive offices)** | | **(Zip Code)** |

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**Registrant's telephone number, including area code: (412) 227-2001**

**Not Applicable**

**(Former name or former address, if changed since last report)**

_________________________________________________________

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: (see General Instruction A.2. below)

□ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

□ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

□ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

□ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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| | | |
|:---|:---|:---|
| **Title of each class** | **Trading Symbol(s)** | **Name of each exchange on which registered** |
| Common Stock | KOP | The New York Stock Exchange |

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Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company □

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. □

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**Explanatory Note**

This amended Current Report on Form 8-K (this "Amendment") is being filed by Koppers Holdings Inc. (the "Company") for the purpose of amending Item 5.02 of that certain Current Report on Form 8-K originally filed by the Company on January 9, 2026 (the "Original Form 8-K"), in connection with Jimmi Sue Smith's agreement with the Company to retire from her position as the Company's Chief Financial Officer effective January 5, 2026, her provision of transition services to the Company and her separation from service with the Company on February 28, 2026 (the "Separation Date"). This Amendment is being filed to provide the material terms of a transition agreement between Ms. Smith and Koppers Inc., a wholly owned subsidiary of the Company ("KI" and together with the Company, "Koppers"), regarding her separation from service with Koppers. Except as described below, all other information in the Original Form 8-K remains unchanged.

**Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.**

On March 9, 2026, KI and Ms. Smith entered into a transition agreement (the "Transition Agreement"), effective as of March 17, 2026, in connection with Ms. Smith's: (i) provision of continued services as Koppers' Treasurer from January 5, 2026 through the Separation Date (the "Interim Employment Period"); (ii) her separation from service with Koppers at the conclusion of the Interim Employment Period; and (iii) her agreeing to assist in the transition of her services from the Separation Date through February 28, 2027 (the "Transition Period").

Pursuant to the Transition Agreement, in exchange for Ms. Smith's general release and waiver of claims, her employment and services during the Interim Employment Period and her agreement to provide transition services during the Transition Period, KI has agreed, among other things, to pay Ms. Smith $440,000, payable over the Transition Period and to allow Ms. Smith to remain eligible for her earned and unpaid 2025 annual cash incentive, based on actual business performance, which will be payable in a lump sum on or around April 4, 2026, which is the same time such annual cash incentive is paid to other executives. In addition, in consideration and conditioned upon her services during the Transition Period, KI has agreed to pay Ms. Smith $123,400 in the form of a lump sum cash payment (representing the value of the equity awards that Ms. Smith would have become vested in during the Transition Period) and $330,000, payable in a lump sum on or around April 8, 2027 (representing her target 2026 annual cash incentive opportunity she would have been eligible for during the Transition Period if she continued to be a full-time employee).

The foregoing description of the Transition Agreement does not purport to be complete and is qualified in its entirety by reference to the complete text of the Transition Agreement, a copy of which will be filed as an exhibit to the Company's next Form 10-Q, which will be incorporated by reference herein.

**Item 9.01 Financial Statements and Exhibits.**

(d)Exhibits.

104 Cover Page Interactive Data File (embedded within the Inline XBRL document).

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

**Dated: March 18, 2026**

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| | |
|:---|:---|
| KOPPERS HOLDINGS INC. | KOPPERS HOLDINGS INC. |
| By: | /s/ Bradley A. Pearce |
|  | Bradley A. Pearce |
|  | Interim Chief Financial Officer and |
|  | Chief Accounting Officer |

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