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  <p style="font-size:10pt;margin-top:5.75pt;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:18pt;font-family:Times New Roman;min-width:fit-content;">UNITED STATES<br/>SECURITIES AND EXCHANGE COMMISSION<br/></span><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:12pt;font-family:Times New Roman;min-width:fit-content;">Washington, D.C. 20549</span></p>
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  <p style="font-size:10pt;margin-top:10pt;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:18pt;font-family:Times New Roman;min-width:fit-content;">FORM </span><span style="font-size:18pt;font-family:Times New Roman;"><ix:nonNumeric id="F_9a99357a-30ea-4753-a6fa-132f14aa61fa" contextRef="C_e41766e6-fc26-4287-8f3c-427ccd6ddb04" name="dei:DocumentType"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:18pt;font-family:Times New Roman;min-width:fit-content;">8-K</span></ix:nonNumeric></span></p>
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  <p style="font-size:10pt;margin-top:9pt;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:12pt;font-family:Times New Roman;min-width:fit-content;">CURRENT REPORT</span></p>
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  <div style="text-indent:-24.5pt;padding-left:24.5pt;margin-top:6pt;margin-bottom:0;text-align:left;"><span style="margin-right:1em;margin-right:1em;"><span style="font-size:10pt;font-family:Times New Roman;"><ix:nonNumeric id="F_0ece570f-f229-4cc3-9cbd-f158894a6d86" contextRef="C_e41766e6-fc26-4287-8f3c-427ccd6ddb04" name="dei:SolicitingMaterial" format="ixt-sec:boolballotbox"><span style="font-size:10pt;font-family:Times New Roman;">&#9744;</span></ix:nonNumeric></span></span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</span></div>
  <div style="text-indent:-24.5pt;padding-left:24.5pt;margin-top:6pt;margin-bottom:0;text-align:left;"><span style="margin-right:1em;margin-right:1em;"><span style="font-size:10pt;font-family:Times New Roman;"><ix:nonNumeric id="F_5fc7c24b-f9c2-4ba8-bd73-43e85c631925" contextRef="C_e41766e6-fc26-4287-8f3c-427ccd6ddb04" name="dei:PreCommencementTenderOffer" format="ixt-sec:boolballotbox"><span style="font-size:10pt;font-family:Times New Roman;">&#9744;</span></ix:nonNumeric></span></span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</span></div>
  <div style="text-indent:-24.5pt;padding-left:24.5pt;margin-top:6pt;margin-bottom:0;text-align:left;"><span style="margin-right:1em;margin-right:1em;"><span style="font-size:10pt;font-family:Times New Roman;"><ix:nonNumeric id="F_7194637d-39a1-4750-98d6-5d4778df1984" contextRef="C_e41766e6-fc26-4287-8f3c-427ccd6ddb04" name="dei:PreCommencementIssuerTenderOffer" format="ixt-sec:boolballotbox"><span style="font-size:10pt;font-family:Times New Roman;">&#9744;</span></ix:nonNumeric></span></span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</span></div>
  <table style="border-spacing:0;table-layout:fixed;width:100.0%;border-collapse:separate;">
   <tr style="visibility:collapse;">
    <td style="width:38%;"/>
    <td style="width:1%;"/>
    <td style="width:15%;"/>
    <td style="width:1%;"/>
    <td style="width:45%;"/>
   </tr>
   <tr style="height:10pt;word-break:break-word;white-space:pre-wrap;">
    <td style="padding-top:0.01in;vertical-align:top;border-bottom:0.25pt solid;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;"><br/>Title of each class</span></p></td>
    <td style="padding-top:0.01in;vertical-align:top;border-bottom:0.25pt solid #ffffff03;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td style="padding-top:0.01in;vertical-align:top;border-bottom:0.25pt solid;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;">Trading<br/>Symbol(s)</span></p></td>
    <td style="padding-top:0.01in;vertical-align:top;border-bottom:0.25pt solid #ffffff03;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td style="padding-top:0.01in;vertical-align:top;border-bottom:0.25pt solid;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;"><br/>Name of each exchange on which registered</span></p></td>
   </tr>
   <tr style="height:10pt;word-break:break-word;white-space:pre-wrap;">
    <td style="padding-top:0.01in;vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span><ix:nonNumeric id="F_9b9d7341-1289-4fa3-9c28-8e63417903e6" contextRef="C_e41766e6-fc26-4287-8f3c-427ccd6ddb04" name="dei:Security12bTitle"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Common Stock</span></ix:nonNumeric></span></p></td>
    <td style="padding-top:0.01in;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td style="padding-top:0.01in;vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span><ix:nonNumeric id="F_045a67bf-f9e5-455f-800c-8657709a22de" contextRef="C_e41766e6-fc26-4287-8f3c-427ccd6ddb04" name="dei:TradingSymbol"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">KOP</span></ix:nonNumeric></span></p></td>
    <td style="padding-top:0.01in;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td style="padding-top:0.01in;vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span><ix:nonNumeric id="F_ab620f3f-1af1-45bf-8eef-9ca318d8e5be" contextRef="C_e41766e6-fc26-4287-8f3c-427ccd6ddb04" name="dei:SecurityExchangeName" format="ixt-sec:exchnameen"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">The New York Stock Exchange</span></ix:nonNumeric></span></p></td>
   </tr>
  </table>
  <p style="font-size:10pt;margin-top:12pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (&#167;&#8239;230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (&#167;&#8239;240.12b-2 of this chapter).</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;"> </span></p>
  <p style="font-size:10pt;margin-top:9pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Emerging growth company </span><span style="font-size:10pt;"><ix:nonNumeric id="F_bad88a41-c833-473a-aecc-a9988a349ec0" contextRef="C_e41766e6-fc26-4287-8f3c-427ccd6ddb04" name="dei:EntityEmergingGrowthCompany" format="ixt-sec:boolballotbox"><span style="font-size:10pt;font-family:Times New Roman;">&#9744;</span></ix:nonNumeric></span></p>
  <p style="font-size:10pt;margin-top:9pt;font-family:Times New Roman;margin-bottom:6pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">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. </span><span style="font-size:10pt;font-family:Times New Roman;">&#9744;</span></p>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;border-bottom:2.25pt double #000000;text-align:left;"><span style="white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">&#160;</span></p>
  <div style="flex-direction:column;display:flex;padding-bottom:0.5in;min-height:0.75in;justify-content:flex-end;box-sizing:border-box;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">&#160;</span></p></div>
  <hr style="page-break-after:always;"/>
  <div style="padding-top:0.5in;min-height:0.75in;box-sizing:border-box;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">&#160;</span></p></div>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Item 2.02 Results of Operations and Financial Condition.</span></p>
  <p style="font-size:10pt;margin-top:6pt;font-family:Times New Roman;margin-bottom:6pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">On May 3, 2024 we issued a press release announcing first quarter 2024 results. A copy of the press release is included in this Current Report on Form 8-K as Exhibit 99.1 and is furnished herewith.</span></p>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Item 5.03 Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.</span></p>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">We held our Annual Meeting of Shareholders on May 2, 2024 (the &#8220;Annual Meeting&#8221;). At the Annual Meeting, our shareholders approved the adoption of an amendment to our Third Amended and Restated Bylaws (the &#8220;Bylaws&#8221;) to allow for exculpation of officers as permitted by Pennsylvania law (the &#8220;Officer Exculpation Proposal&#8221;), as further described under Item 5.07 below.</span></p>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">As a result of the shareholders&#8217; approval of the Officer Exculpation Proposal, effective May 2, 2024, the Bylaws were amended to add Section 5.10, which provides that our officers shall not be personally liable, as such, for monetary damages for any action taken, or any failure to take any action, unless (i) the officer has breached or failed to perform the duties of an officer under Subchapter C of Chapter 17 of the Pennsylvania Associations Code of 1988, and (ii) the breach or failure to perform constitutes self-dealing, willful misconduct or recklessness. This provision does not apply to (i) the responsibility or liability of an officer pursuant to any criminal statute, or (ii) the liability of an officer for the payment of taxes pursuant to federal, state or local law.</span></p>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">The foregoing summary of the amendment to the Bylaws does not purport to be complete and is qualified in its entirety by reference to the amendment to the Bylaws, a copy of which is attached as Exhibit 3.1 to this Current Report on Form 8-K and is incorporated herein by reference.</span></p>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Item 5.07 Submission of Matters to a Vote of Security Holders.</span></p>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Four matters were considered and voted upon at the Annual Meeting: (1) the election of ten persons to serve on our Board of Directors; (2) the Officer Exculpation Proposal; (3) an advisory resolution to approve named executive officer compensation; and (4) the ratification of the appointment of KPMG LLP as our independent registered public accounting firm for 2024.</span></p>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Election of Directors</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">:  Nominations of Leroy M. Ball, Xudong Feng, Ph.D., Traci L. Jensen, David L. Motley, Albert J. Neupaver, Andrew D. Sandifer, Louis L. Testoni, Stephen R. Tritch, Nishan J. Vartanian and Sonja M. Wilkerson to serve as directors for one-year terms expiring in 2025 were considered, and all nominees were elected.  All nominees received a majority of votes cast.  The final voting results are as follows:</span></p>
  <table style="border-spacing:0;table-layout:fixed;width:100.0%;border-collapse:separate;">
   <tr style="visibility:collapse;">
    <td style="width:20.34%;"/>
    <td style="width:20.32%;"/>
    <td style="width:22.04%;"/>
    <td style="width:18.66%;"/>
    <td style="width:18.64%;"/>
   </tr>
   <tr style="height:10pt;word-break:break-word;white-space:pre-wrap;">
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;text-decoration:underline;min-width:fit-content;">Nominees</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;text-decoration:underline;min-width:fit-content;">For</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;text-decoration:underline;min-width:fit-content;">Against</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;text-decoration:underline;min-width:fit-content;">Abstain</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;text-decoration:underline;min-width:fit-content;">Broker Non-Votes</span></p></td>
   </tr>
   <tr style="height:10pt;word-break:break-word;white-space:pre-wrap;">
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Leroy M. Ball</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">18,507,124</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">322,082</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">4,204</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">1,159,108</span></p></td>
   </tr>
   <tr style="height:10pt;word-break:break-word;white-space:pre-wrap;">
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Xudong Feng, Ph.D.</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">17,069,671</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">1,759,614</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">4,125</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">1,159,108</span></p></td>
   </tr>
   <tr style="height:10pt;word-break:break-word;white-space:pre-wrap;">
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Traci L. Jensen</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">18,728,169</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">101,116</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">4,125</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">1,159,108</span></p></td>
   </tr>
   <tr style="height:10pt;word-break:break-word;white-space:pre-wrap;">
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">David L. Motley</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">17,125,725</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">1,702,798</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">4,887</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">1,159,108</span></p></td>
   </tr>
   <tr style="height:10pt;word-break:break-word;white-space:pre-wrap;">
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Albert J. Neupaver</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">18,437,122</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">392,063</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">4,225</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">1,159,108</span></p></td>
   </tr>
   <tr style="height:10pt;word-break:break-word;white-space:pre-wrap;">
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Andrew D. Sandifer</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">17,313,886</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">1,510,490</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">9,034</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">1,159,108</span></p></td>
   </tr>
   <tr style="height:10pt;word-break:break-word;white-space:pre-wrap;">
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Louis L. Testoni</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">17,069,218</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">1,759,967</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">4,225</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">1,159,108</span></p></td>
   </tr>
   <tr style="height:10pt;word-break:break-word;white-space:pre-wrap;">
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Stephen R. Tritch</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">18,401,626</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">427,563</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">4,221</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">1,159,108</span></p></td>
   </tr>
   <tr style="height:10pt;word-break:break-word;white-space:pre-wrap;">
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Nishan J. Vartanian</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">18,773,923</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">54,966</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">4,521</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">1,159,108</span></p></td>
   </tr>
   <tr style="height:10pt;word-break:break-word;white-space:pre-wrap;">
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Sonja M. Wilkerson</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">17,266,680</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">1,562,595</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">4,135</span></p></td>
    <td style="vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">1,159,108</span></p></td>
   </tr>
  </table>
  <p style="font-size:10pt;margin-top:6pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Amendment to the Bylaws to Allow for Exculpation of Officers</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">:  The proposal to adopt an amendment to the Bylaws to allow for exculpation of officers as permitted by Pennsylvania law was approved.  The final voting results are as follows:</span></p>
  <table style="margin-left:auto;border-spacing:0;table-layout:fixed;width:100.0%;border-collapse:separate;margin-right:auto;">
   <tr style="visibility:collapse;">
    <td style="width:24.48%;"/>
    <td style="width:27.56%;"/>
    <td style="width:19.38%;"/>
    <td style="width:28.58%;"/>
   </tr>
   <tr style="height:10pt;word-break:break-word;white-space:pre-wrap;text-align:left;">
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;text-decoration:underline;min-width:fit-content;">For</span></p></td>
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;text-decoration:underline;min-width:fit-content;">Against</span></p></td>
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;text-decoration:underline;min-width:fit-content;">Abstain</span></p></td>
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;text-decoration:underline;min-width:fit-content;">Broker Non-Votes</span></p></td>
   </tr>
   <tr style="height:10pt;word-break:break-word;white-space:pre-wrap;text-align:left;">
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">17,501,283</span></p></td>
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">1,324,618</span></p></td>
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">7,509</span></p></td>
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">1,159,108</span></p></td>
   </tr>
  </table>
  <p style="font-size:10pt;margin-top:6pt;font-family:Times New Roman;margin-bottom:6pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Advisory Resolution to Approve Named Executive Officer Compensation</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">:  The advisory resolution approving the compensation of our named executive officers as disclosed in the Notice of Annual Meeting and Proxy Statement for the 2024 Annual Meeting was approved.  The final voting results are as follows:</span></p>
  <table style="margin-left:auto;border-spacing:0;table-layout:fixed;width:100.0%;border-collapse:separate;margin-right:auto;">
   <tr style="visibility:collapse;">
    <td style="width:24.28%;"/>
    <td style="width:27.56%;"/>
    <td style="width:19.22%;"/>
    <td style="width:28.94%;"/>
   </tr>
   <tr style="height:10pt;word-break:break-word;white-space:pre-wrap;text-align:left;">
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;text-decoration:underline;min-width:fit-content;">For</span></p></td>
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;text-decoration:underline;min-width:fit-content;">Against</span></p></td>
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;text-decoration:underline;min-width:fit-content;">Abstain</span></p></td>
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;text-decoration:underline;min-width:fit-content;">Broker Non-Votes</span></p></td>
   </tr>
   <tr style="height:10pt;word-break:break-word;white-space:pre-wrap;text-align:left;">
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">18,488,847</span></p></td>
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">314,343</span></p></td>
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">30,220</span></p></td>
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">1,159,108</span></p></td>
   </tr>
  </table>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">&#160;</span></p>
  <div style="flex-direction:column;display:flex;padding-bottom:0.5in;min-height:0.75in;justify-content:flex-end;box-sizing:border-box;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">&#160;</span></p></div>
  <hr style="page-break-after:always;"/>
  <div style="padding-top:0.5in;min-height:0.75in;box-sizing:border-box;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">&#160;</span></p></div>
  <p style="font-size:10pt;margin-top:6pt;font-family:Times New Roman;margin-bottom:6pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Ratification of Appointment of KPMG LLP</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">:  The Audit Committee of our Board of Directors appointed KPMG LLP as our independent registered public accounting firm for the year 2024.  The final voting results to ratify the appointment of KPMG LLP are as follows:</span></p>
  <table style="margin-left:auto;border-spacing:0;table-layout:fixed;width:100.0%;border-collapse:separate;margin-right:auto;">
   <tr style="visibility:collapse;">
    <td style="width:34.14%;"/>
    <td style="width:38.74%;"/>
    <td style="width:27.12%;"/>
   </tr>
   <tr style="height:10pt;word-break:break-word;white-space:pre-wrap;text-align:left;">
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;text-decoration:underline;min-width:fit-content;">For</span></p></td>
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;text-decoration:underline;min-width:fit-content;">Against</span></p></td>
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;text-decoration:underline;min-width:fit-content;">Abstain</span></p></td>
   </tr>
   <tr style="height:10pt;word-break:break-word;white-space:pre-wrap;text-align:left;">
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">19,671,453</span></p></td>
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">265,015</span></p></td>
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">56,050</span></p></td>
   </tr>
  </table>
  <p style="font-size:10pt;margin-top:6pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">There were no broker non-votes with respect to this matter.</span></p>
  <p style="font-size:10pt;margin-top:12pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Item 9.01 Financial Statements and Exhibits.</span></p>
  <p style="font-size:10pt;margin-top:6pt;font-family:Times New Roman;margin-bottom:6pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">(d) Exhibits.</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;"> </span></p>
  <p style="text-indent:-4.749%;padding-left:4.533%;font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;font-size:6pt;font-family:Times New Roman;min-width:fit-content;">&#160;</span></p>
  <table style="margin-left:auto;border-spacing:0;table-layout:fixed;width:100.0%;border-collapse:separate;margin-right:auto;">
   <tr style="visibility:collapse;">
    <td style="width:7%;"/>
    <td style="width:1%;"/>
    <td style="width:92%;"/>
   </tr>
   <tr style="height:10pt;word-break:break-word;white-space:pre-wrap;">
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:12pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">3.1</span></p></td>
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:12pt;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td style="vertical-align:middle;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:12pt;text-align:left;"><a href="kop-ex3_1.htm"><span style="color:#0000ff;white-space:pre-wrap;text-decoration:underline;min-width:fit-content;">Amendment to Third Amended and Restated Bylaws of Koppers Holdings Inc., effective May 2, 2024</span></a></p></td>
   </tr>
   <tr style="height:10pt;word-break:break-word;white-space:pre-wrap;">
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:12pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">99.1</span></p></td>
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:12pt;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td style="vertical-align:middle;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:12pt;text-align:left;"><a href="kop-ex99_1.htm"><span style="color:#0000ff;white-space:pre-wrap;text-decoration:underline;min-width:fit-content;">Press Release dated May 3, 2024</span></a></p></td>
   </tr>
   <tr style="height:10pt;word-break:break-word;white-space:pre-wrap;">
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:12pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">104</span></p></td>
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:12pt;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td style="vertical-align:middle;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:12pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Cover Page Interactive Data File (embedded within the Inline XBRL document).</span></p></td>
   </tr>
  </table>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">&#160;</span></p>
  <div style="flex-direction:column;display:flex;padding-bottom:0.5in;min-height:0.75in;justify-content:flex-end;box-sizing:border-box;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">&#160;</span></p></div>
  <hr style="page-break-after:always;"/>
  <div style="padding-top:0.5in;min-height:0.75in;box-sizing:border-box;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">&#160;</span></p></div>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">SIGNATURES</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;"> </span></p>
  <p style="font-size:10pt;margin-top:12pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">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.</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;"> </span></p>
  <p style="font-size:10pt;margin-top:12pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Dated: May 3, 2024</span></p>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:11pt;font-family:Times New Roman;min-width:fit-content;"> </span></p>
  <table style="margin-left:auto;border-spacing:0;table-layout:fixed;width:41.0%;border-collapse:separate;">
   <tr style="visibility:collapse;">
    <td style="width:9.671%;"/>
    <td style="width:2.418%;"/>
    <td style="width:87.911%;"/>
   </tr>
   <tr style="height:10pt;word-break:break-word;white-space:pre-wrap;">
    <td colspan="3" style="vertical-align:bottom;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">KOPPERS HOLDINGS INC.</span></p></td>
   </tr>
   <tr style="height:12.25pt;word-break:break-word;white-space:pre-wrap;">
    <td style="vertical-align:bottom;"><p style="font-size:12pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td colspan="2" style="vertical-align:bottom;"><p style="font-size:12pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
   </tr>
   <tr style="height:10pt;word-break:break-word;white-space:pre-wrap;">
    <td style="vertical-align:bottom;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">By:</span></p></td>
    <td style="vertical-align:bottom;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;"> </span></p></td>
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{"company-data": {"conformed-name": "Koppers Holdings Inc.", "cik": "0001315257", "assigned-sic": "2400", "organization-name": "04 Manufacturing", "irs-number": "201878963", "state-of-incorporation": "PA", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-32737", "film-number": "24910887"}, "business-address": {"street1": "436 SEVENTH AVENUE", "city": "PITTSBURGH", "state": "PA", "zip": "15219", "phone": "412-227-2001"}, "mail-address": {"street1": "436 SEVENTH AVENUE", "city": "PITTSBURGH", "state": "PA", "zip": "15219"}, "former-company": {"former-conformed-name": "KI Holdings Inc.", "date-changed": "20050124"}}
8-K
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM
8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
Date of Report (Date of earliest event reported):
May 02, 2024
KOPPERS HOLDINGS INC.
(Exact name of registrant as specified in its charter)
Pennsylvania
1-32737
20-1878963
(State or other jurisdiction
of incorporation)
(Commission File Number)
(IRS Employer
Identification No.)
436 Seventh Avenue
Pittsburgh
,
Pennsylvania
15219
(Address of principal executive offices)
(Zip Code)
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))
Title of each class
Trading
Symbol(s)
Name of each exchange on which registered
Common Stock
KOP
The New York Stock Exchange
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.
☐
Item 2.02 Results of Operations and Financial Condition.
On May 3, 2024 we issued a press release announcing first quarter 2024 results. A copy of the press release is included in this Current Report on Form 8-K as Exhibit 99.1 and is furnished herewith.
Item 5.03 Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.
We held our Annual Meeting of Shareholders on May 2, 2024 (the "Annual Meeting"). At the Annual Meeting, our shareholders approved the adoption of an amendment to our Third Amended and Restated Bylaws (the "Bylaws") to allow for exculpation of officers as permitted by Pennsylvania law (the "Officer Exculpation Proposal"), as further described under Item 5.07 below.
As a result of the shareholders' approval of the Officer Exculpation Proposal, effective May 2, 2024, the Bylaws were amended to add Section 5.10, which provides that our officers shall not be personally liable, as such, for monetary damages for any action taken, or any failure to take any action, unless (i) the officer has breached or failed to perform the duties of an officer under Subchapter C of Chapter 17 of the Pennsylvania Associations Code of 1988, and (ii) the breach or failure to perform constitutes self-dealing, willful misconduct or recklessness. This provision does not apply to (i) the responsibility or liability of an officer pursuant to any criminal statute, or (ii) the liability of an officer for the payment of taxes pursuant to federal, state or local law.
The foregoing summary of the amendment to the Bylaws does not purport to be complete and is qualified in its entirety by reference to the amendment to the Bylaws, a copy of which is attached as Exhibit 3.1 to this Current Report on Form 8-K and is incorporated herein by reference.
Item 5.07 Submission of Matters to a Vote of Security Holders.
Four matters were considered and voted upon at the Annual Meeting: (1) the election of ten persons to serve on our Board of Directors; (2) the Officer Exculpation Proposal; (3) an advisory resolution to approve named executive officer compensation; and (4) the ratification of the appointment of KPMG LLP as our independent registered public accounting firm for 2024.
Election of Directors
:  Nominations of Leroy M. Ball, Xudong Feng, Ph.D., Traci L. Jensen, David L. Motley, Albert J. Neupaver, Andrew D. Sandifer, Louis L. Testoni, Stephen R. Tritch, Nishan J. Vartanian and Sonja M. Wilkerson to serve as directors for one-year terms expiring in 2025 were considered, and all nominees were elected.  All nominees received a majority of votes cast.  The final voting results are as follows:
Nominees
For
Against
Abstain
Broker Non-Votes
Leroy M. Ball
18,507,124
322,082
4,204
1,159,108
Xudong Feng, Ph.D.
17,069,671
1,759,614
4,125
1,159,108
Traci L. Jensen
18,728,169
101,116
4,125
1,159,108
David L. Motley
17,125,725
1,702,798
4,887
1,159,108
Albert J. Neupaver
18,437,122
392,063
4,225
1,159,108
Andrew D. Sandifer
17,313,886
1,510,490
9,034
1,159,108
Louis L. Testoni
17,069,218
1,759,967
4,225
1,159,108
Stephen R. Tritch
18,401,626
427,563
4,221
1,159,108
Nishan J. Vartanian
18,773,923
54,966
4,521
1,159,108
Sonja M. Wilkerson
17,266,680
1,562,595
4,135
1,159,108
Amendment to the Bylaws to Allow for Exculpation of Officers
:  The proposal to adopt an amendment to the Bylaws to allow for exculpation of officers as permitted by Pennsylvania law was approved.  The final voting results are as follows:
For
Against
Abstain
Broker Non-Votes
17,501,283
1,324,618
7,509
1,159,108
Advisory Resolution to Approve Named Executive Officer Compensation
:  The advisory resolution approving the compensation of our named executive officers as disclosed in the Notice of Annual Meeting and Proxy Statement for the 2024 Annual Meeting was approved.  The final voting results are as follows:
For
Against
Abstain
Broker Non-Votes
18,488,847
314,343
30,220
1,159,108
Ratification of Appointment of KPMG LLP
:  The Audit Committee of our Board of Directors appointed KPMG LLP as our independent registered public accounting firm for the year 2024.  The final voting results to ratify the appointment of KPMG LLP are as follows:
For
Against
Abstain
19,671,453
265,015
56,050
There were no broker non-votes with respect to this matter.
Item 9.01 Financial Statements and Exhibits.
(d) Exhibits.
3.1
Amendment to Third Amended and Restated Bylaws of Koppers Holdings Inc., effective May 2, 2024
99.1
Press Release dated May 3, 2024
104
Cover Page Interactive Data File (embedded within the Inline XBRL document).
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: May 3, 2024
KOPPERS HOLDINGS INC.
By:
/s/ Jimmi Sue Smith
Jimmi Sue Smith
Chief Financial Officer