<SEC-DOCUMENT>0000950170-23-067433-index.html : 20231201
<SEC-HEADER>0000950170-23-067433.hdr.sgml : 20231201
<ACCEPTANCE-DATETIME>20231201185954
ACCESSION NUMBER:		0000950170-23-067433
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20231129
FILED AS OF DATE:		20231201
DATE AS OF CHANGE:		20231201

REPORTING-OWNER:	

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

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-32737
		FILM NUMBER:		231460911

	MAIL ADDRESS:	
		STREET 1:		C/O KOPPERS INC
		STREET 2:		436 SEVENTH AVENUE, SUITE 1550
		CITY:			PITTSBURG
		STATE:			PA
		ZIP:			15219

ISSUER:		

	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

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>ownership.xml
<DESCRIPTION>4
<TEXT>
Document 1 - file: ownership.html

Document 1 - RAW XML: ownership.xml

</DOCUMENT>
</SEC-DOCUMENT>