<SEC-DOCUMENT>0001959173-23-005053.txt : 20231129
<SEC-HEADER>0001959173-23-005053.hdr.sgml : 20231129
<ACCEPTANCE-DATETIME>20231129163821
ACCESSION NUMBER:		0001959173-23-005053
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20231129
DATE AS OF CHANGE:		20231129

SUBJECT COMPANY:	

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

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	001-32737
		FILM NUMBER:		231452882

	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

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Hyde Leslie S
		CENTRAL INDEX KEY:			0001349675

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		C/O KOPPERS INC
		STREET 2:		436 SEVENTH AVENUE, SUITE 1550
		CITY:			PITTSBURG
		STATE:			PA
		ZIP:			15219
</SEC-HEADER>
<DOCUMENT>
<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001349675</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0001315257</issuerCik>
      <issuerName>Koppers Holdings Inc.</issuerName>
      <secFileNumber>001-32737</secFileNumber>
      <issuerAddress>
        <com:street1>436 SEVENTH AVENUE</com:street1>
        <com:city>PITTSBURGH</com:city>
        <com:stateOrCountry>PA</com:stateOrCountry>
        <com:zipCode>15219</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>412-227-2001</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Hyde Leslie S</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Fidelity Brokerage Services LLC</name>
        <address>
          <com:street1>900 Salem Street</com:street1>
          <com:city>Smithfield</com:city>
          <com:stateOrCountry>RI</com:stateOrCountry>
          <com:zipCode>02917</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>1447</noOfUnitsSold>
      <aggregateMarketValue>65155.00</aggregateMarketValue>
      <noOfUnitsOutstanding>20823066</noOfUnitsOutstanding>
      <approxSaleDate>11/29/2023</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>11/29/2023</acquiredDate>
      <natureOfAcquisitionTransaction>Option Granted 03/01/2016</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>724</amountOfSecuritiesAcquired>
      <paymentDate>11/29/2023</paymentDate>
      <natureOfPayment>Cash</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>11/29/2023</acquiredDate>
      <natureOfAcquisitionTransaction>Option Granted 03/02/2018</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>313</amountOfSecuritiesAcquired>
      <paymentDate>11/29/2023</paymentDate>
      <natureOfPayment>Cash</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>11/29/2023</acquiredDate>
      <natureOfAcquisitionTransaction>Option Granted 03/03/2017</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>410</amountOfSecuritiesAcquired>
      <paymentDate>11/29/2023</paymentDate>
      <natureOfPayment>Cash</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Leslie S. Hyde</name>
        <address>
          <com:street1>436 Seventh Avenue</com:street1>
          <com:city>Pittsburgh</com:city>
          <com:stateOrCountry>PA</com:stateOrCountry>
          <com:zipCode>15219</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>09/18/2023</saleDate>
      <amountOfSecuritiesSold>10452</amountOfSecuritiesSold>
      <grossProceeds>423116.82</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Leslie S. Hyde</name>
        <address>
          <com:street1>436 Seventh Avenue</com:street1>
          <com:city>Pittsburgh</com:city>
          <com:stateOrCountry>PA</com:stateOrCountry>
          <com:zipCode>15219</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>09/01/2023</saleDate>
      <amountOfSecuritiesSold>2351</amountOfSecuritiesSold>
      <grossProceeds>94044.94</grossProceeds>
    </securitiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>11/29/2023</noticeDate>
      <planAdoptionDates>
        <planAdoptionDate>03/15/2023</planAdoptionDate>
      </planAdoptionDates>
      <signature>/s/ Gerardo Ibarra-Munoz, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Leslie S. Hyde</signature>
    </noticeSignature>
  </formData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
