OTHER INFORMATION
−Removed: During the three months ended September 30, 2023, none of our directors or executive officers adopted or terminated any Rule 10b5-1 trading arrangement or any non-Rule 10b5-1 trading arrangement (as such terms are defined in Item 408 of Regulation S-X).
−Removed: Amended and Restated Articles of Incorporation of Koppers Holdings Inc., as amended on August 3, 2023.
−Removed: Third Amended and Restated Bylaws, as adopted on August 2, 2023, of Koppers Holdings Inc.
−Removed: (Incorporated herein by reference to Exhibit 3.2 to the Current Report on Form 8-K filed on August 3, 2023 by Koppers Holdings Inc.
−Removed: (Commission File No.
+Added: During the three months ended March 31, 2024 , none of our directors or executive officers adopted or terminated any Rule 10b5-1 trading arrangement or any non-Rule 10b5-1 trading arrangement (as such terms are defined in Item 408 of Regulation S-K).
+Added: Third Amended and Restated Bylaws of Koppers Holdings Inc., as amended on May 2, 2024.
Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
1 unchanged sentence
Certification of Chief Executive Officer and Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
−Removed: Inline XBRL Instance Document –
−Removed: the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
−Removed: Inline XBRL Taxonomy Extension Schema Document
−Removed: Inline XBRL Taxonomy Extension Calculation Linkbase Document
−Removed: Inline XBRL Taxonomy Extension Definition Linkbase Document
−Removed: Inline XBRL Taxonomy Extension Label Linkbase Document
−Removed: Inline XBRL Taxonomy Extension Presentation Linkbase Document
+Added: Inline XBRL Instance Document – the instance document does not appear in the Interactive Data File because its XBRL tags are embedded with the Inline XBRL document.
+Added: Inline XBRL Taxonomy Extension Schema With Embedded Linkbase Documents
Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)
3 unchanged sentences
(R EGISTRANT )
−Removed: November 3, 2023
/s/ J immi S ue S mith
3 unchanged sentences
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.