<SEC-DOCUMENT>0001708035-24-000073-index.html : 20240308
<SEC-HEADER>0001708035-24-000073.hdr.sgml : 20240308
<ACCEPTANCE-DATETIME>20240308160739
ACCESSION NUMBER:		0001708035-24-000073
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		4
CONFORMED PERIOD OF REPORT:	20240301
FILED AS OF DATE:		20240308
DATE AS OF CHANGE:		20240308

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Lorance Sarah
		CENTRAL INDEX KEY:			0002012367
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38221
		FILM NUMBER:		24734362

	MAIL ADDRESS:	
		STREET 1:		C/O ECOVYST INC.
		STREET 2:		300 LINDENWOOD DRIVE
		CITY:			MALVERN
		STATE:			PA
		ZIP:			19355

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Ecovyst Inc.
		CENTRAL INDEX KEY:			0001708035
		STANDARD INDUSTRIAL CLASSIFICATION:	CHEMICALS & ALLIED PRODUCTS [2800]
		ORGANIZATION NAME:           	08 Industrial Applications and Services
		IRS NUMBER:				813406833
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		300 LINDENWOOD DRIVE
		CITY:			MALVERN
		STATE:			PA
		ZIP:			19355
		BUSINESS PHONE:		484-617-1200

	MAIL ADDRESS:	
		STREET 1:		300 LINDENWOOD DRIVE
		CITY:			MALVERN
		STATE:			PA
		ZIP:			19355

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PQ Group Holdings Inc.
		DATE OF NAME CHANGE:	20170531
</SEC-HEADER>
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<TYPE>3
<SEQUENCE>1
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<DESCRIPTION>FORM 3
<TEXT>
Document 1 - file: wk-form3_1709932048.html

Document 1 - RAW XML: wk-form3_1709932048.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24.1
<SEQUENCE>2
<FILENAME>lorancepoafiled.htm
<DESCRIPTION>EX-24.1
<TEXT>
Document 2 - file: lorancepoafiled.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>lorancepoafiled001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: lorancepoafiled001.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>lorancepoafiled002.jpg
<TEXT>
Document 4 - file: lorancepoafiled002.jpg

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