<SEC-DOCUMENT>0001708035-25-000089.txt : 20250530
<SEC-HEADER>0001708035-25-000089.hdr.sgml : 20250530
<ACCEPTANCE-DATETIME>20250530160258
ACCESSION NUMBER:		0001708035-25-000089
CONFORMED SUBMISSION TYPE:	SD
PUBLIC DOCUMENT COUNT:		1
<RULE>
<RULE-NAME>13p-1
<ITEM>
<ITEM-NUMBER>1.01
<ITEM-PERIOD>20241231
</ITEM>
</RULE>
FILED AS OF DATE:		20250530
DATE AS OF CHANGE:		20250530

FILER:

	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
		EIN:				813406833
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SD
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38221
		FILM NUMBER:		251010719

	BUSINESS ADDRESS:	
		STREET 1:		600 LEE ROAD, SUITE 200
		CITY:			WAYNE
		STATE:			PA
		ZIP:			19087
		BUSINESS PHONE:		484-617-1200

	MAIL ADDRESS:	
		STREET 1:		600 LEE ROAD, SUITE 200
		CITY:			WAYNE
		STATE:			PA
		ZIP:			19087

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PQ Group Holdings Inc.
		DATE OF NAME CHANGE:	20170531
</SEC-HEADER>
<DOCUMENT>
<TYPE>SD
<SEQUENCE>1
<FILENAME>formsd-2025conflictmineral.htm
<DESCRIPTION>SD
<TEXT>
<html><head>
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<title>Document</title></head><body><div id="i4567a8406cd5421f93595c5be0b0a3e5_1"></div><div style="min-height:36pt;width:100%"><div><font><br></font></div><div><font><br></font></div></div><div style="-sec-extract:summary;margin-top:3pt;text-align:center"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:540.00pt"><tr><td style="width:1.0pt"></td><td style="width:97.75pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:97.75pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:97.75pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:97.75pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:139.00pt"></td><td style="width:1.0pt"></td></tr><tr style="height:3pt"><td colspan="3" style="border-bottom:1pt solid #000000;border-top:1pt solid #000000;padding:0 1pt"></td><td colspan="3" style="border-bottom:1pt solid #000000;border-top:1pt solid #000000;padding:0 1pt"></td><td colspan="3" style="border-bottom:1pt solid #000000;border-top:1pt solid #000000;padding:0 1pt"></td><td colspan="3" style="border-bottom:1pt solid #000000;border-top:1pt solid #000000;padding:0 1pt"></td><td colspan="3" style="border-bottom:1pt solid #000000;border-top:1pt solid #000000;padding:0 1pt"></td></tr></table></div><div style="text-align:center"><font><br></font></div><div style="margin-top:4pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:16pt;font-weight:700;line-height:120%">UNITED STATES</font></div><div style="text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:16pt;font-weight:700;line-height:120%">SECURITIES AND EXCHANGE COMMISSION</font></div><div style="margin-bottom:6pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:12pt;font-weight:700;line-height:120%">Washington, D.C. 20549</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:6pt;font-weight:400;line-height:120%">&#160;</font></div><div style="padding-left:2.25pt;padding-right:2.25pt;text-align:center"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:138.00pt"><tr><td style="width:1.0pt"></td><td style="width:136.00pt"></td><td style="width:1.0pt"></td></tr><tr style="height:3pt"><td colspan="3" style="border-bottom:1pt solid #000;padding:0 1pt"></td></tr></table></div><div style="margin-top:11pt;padding-left:2.25pt;padding-right:2.25pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:16pt;font-weight:700;line-height:120%">FORM SD</font></div><div style="margin-bottom:6pt;margin-top:6pt;padding-left:2.25pt;padding-right:2.25pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:12pt;font-weight:700;line-height:120%">SPECIALIZED DISCLOSURE REPORT</font></div><div style="padding-left:2.25pt;padding-right:2.25pt;text-align:center"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:138.00pt"><tr><td style="width:1.0pt"></td><td style="width:136.00pt"></td><td style="width:1.0pt"></td></tr><tr style="height:3pt"><td colspan="3" style="border-bottom:1pt solid #000;padding:0 1pt"></td></tr></table></div><div style="margin-top:11pt;padding-left:2.25pt;padding-right:2.25pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:22pt;font-weight:700;line-height:120%">Ecovyst Inc.</font></div><div style="text-align:center"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:138.00pt"><tr><td style="width:1.0pt"></td><td style="width:136.00pt"></td><td style="width:1.0pt"></td></tr><tr style="height:3pt"><td colspan="3" style="border-bottom:1pt solid #000;padding:0 1pt"></td></tr></table></div><div style="padding-left:2.25pt;padding-right:2.25pt;text-align:center"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:489.75pt"><tr><td style="width:1.0pt"></td><td style="width:76.75pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:76.75pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:1.75pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:76.75pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:76.75pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:1.75pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:165.25pt"></td><td style="width:1.0pt"></td></tr><tr style="height:12pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr style="height:12pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr style="height:12pt"><td colspan="6" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">Delaware</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">001-38221</font></td></tr><tr style="height:20pt"><td colspan="6" style="padding:2px 1pt;text-align:center;vertical-align:top"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:700;line-height:100%">(State or other jurisdiction <br>of incorporation)</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:top"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:700;line-height:100%">(Commission file number)</font></td></tr><tr style="height:9pt"><td colspan="21" style="padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:6pt;font-weight:700;line-height:100%">&#160;</font></td></tr><tr style="height:12pt"><td colspan="6" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">600 Lee Road, Suite 200</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">&#160;</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr style="height:14pt"><td colspan="6" style="padding:2px 1pt;text-align:left;vertical-align:top"><div style="text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">Wayne, Pennsylvania</font></div></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:top"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">19087</font></td></tr><tr style="height:12pt"><td colspan="6" style="padding:2px 1pt;text-align:center;vertical-align:top"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:7.5pt;font-weight:700;line-height:100%">(Address of principal executive offices)</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:700;line-height:100%">&#160;</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:top"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:700;line-height:100%">(Zip code)</font></td></tr><tr style="height:9pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr style="height:14pt"><td colspan="21" style="padding:2px 1pt;text-align:center;vertical-align:top"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">Joseph S. Koscinski</font></td></tr><tr style="height:14pt"><td colspan="21" style="padding:2px 1pt;text-align:center;vertical-align:top"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">Vice President, Chief Administrative Officer, General Counsel and Secretary</font></td></tr><tr style="height:14pt"><td colspan="12" style="padding:2px 1pt;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">(484)</font></td><td colspan="9" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">617-1200</font></td></tr><tr style="height:20pt"><td colspan="21" style="padding:2px 1pt;text-align:center;vertical-align:top"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:700;line-height:100%">(Name and telephone number, including area code, <br>of the person to contact in connection with this report)</font></td></tr><tr style="height:12pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="9" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr style="height:12pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr style="height:12pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr style="height:12pt"><td colspan="21" style="padding:2px 1pt;text-align:left;vertical-align:top"><div style="padding-right:2.25pt;text-align:justify"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Check the appropriate box to indicate the rule pursuant to which this form is being filed&#58;</font></div></td></tr><tr style="height:6pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr style="height:12pt"><td colspan="21" rowspan="2" style="padding:2px 1pt;text-align:left;vertical-align:top"><div style="text-align:justify"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">&#9746; Rule 13p-1 under the Securities Exchange Act (17 CFR 240.13p-1) for the reporting period from January 1 to December 31, 2024. </font></div></td></tr><tr style="height:12pt"><td colspan="21" style="display:none"></td></tr><tr style="height:14pt"><td colspan="21" style="padding:2px 1pt;text-align:left;vertical-align:top"><div style="text-align:justify"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">&#9744;  Rule 13q-1 under the Securities Exchange Act (17 CFR 240.13q-1) for the fiscal year ended 2024. </font></div></td></tr></table></div><div style="padding-left:2.25pt;padding-right:2.25pt;text-align:center"><font><br></font></div><div style="padding-left:2.25pt;padding-right:2.25pt;text-align:center"><font><br></font></div><div style="padding-left:2.25pt;padding-right:2.25pt;text-align:center"><font><br></font></div><div style="padding-left:2.25pt;padding-right:2.25pt;text-align:center"><font><br></font></div><div style="padding-left:2.25pt;padding-right:2.25pt;text-align:center"><font><br></font></div><div style="padding-left:2.25pt;padding-right:2.25pt;text-align:center"><font><br></font></div><div style="padding-left:2.25pt;padding-right:2.25pt;text-align:center"><font><br></font></div><div style="padding-left:2.25pt;padding-right:2.25pt;text-align:center"><font><br></font></div><div style="padding-left:2.25pt;padding-right:2.25pt;text-align:center"><font><br></font></div><div style="padding-left:2.25pt;padding-right:2.25pt;text-align:center"><font><br></font></div><div style="padding-left:2.25pt;padding-right:2.25pt;text-align:center"><font><br></font></div><div style="padding-left:2.25pt;padding-right:2.25pt;text-align:center"><font><br></font></div><div style="padding-left:2.25pt;padding-right:2.25pt;text-align:center"><font><br></font></div><div style="padding-left:2.25pt;padding-right:2.25pt;text-align:center"><font><br></font></div><div style="padding-left:2.25pt;padding-right:2.25pt;text-align:center"><font><br></font></div><div style="padding-left:2.25pt;padding-right:2.25pt;text-align:center"><font><br></font></div><div style="padding-left:2.25pt;padding-right:2.25pt;text-align:center"><font><br></font></div><div style="padding-left:2.25pt;padding-right:2.25pt;text-align:center"><font><br></font></div><div style="padding-left:2.25pt;padding-right:2.25pt;text-align:center"><font><br></font></div><div style="margin-top:3pt;padding-left:2.25pt;padding-right:2.25pt;text-align:center"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:540.00pt"><tr><td style="width:1.0pt"></td><td style="width:97.75pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:97.75pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:97.75pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:97.75pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:139.00pt"></td><td style="width:1.0pt"></td></tr><tr style="height:3pt"><td colspan="3" style="border-bottom:1pt solid #000000;border-top:1pt solid #000000;padding:0 1pt"></td><td colspan="3" style="border-bottom:1pt solid #000000;border-top:1pt solid #000000;padding:0 1pt"></td><td colspan="3" style="border-bottom:1pt solid #000000;border-top:1pt solid #000000;padding:0 1pt"></td><td colspan="3" style="border-bottom:1pt solid #000000;border-top:1pt solid #000000;padding:0 1pt"></td><td colspan="3" style="border-bottom:1pt solid #000000;border-top:1pt solid #000000;padding:0 1pt"></td></tr></table></div><div style="height:36pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div><font><br></font></div></div></div><div id="i4567a8406cd5421f93595c5be0b0a3e5_7"></div><hr style="page-break-after:always"><div style="min-height:36pt;width:100%"><div><font><br></font></div><div><font><br></font></div></div><div><font><br></font></div><div style="text-align:center"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:540.00pt"><tr><td style="width:1.0pt"></td><td style="width:106.00pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:106.00pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:106.00pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:106.00pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:106.00pt"></td><td style="width:1.0pt"></td></tr><tr style="height:14pt"><td colspan="15" style="padding:2px 1pt;text-align:justify;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">Section 1 &#8211; Conflict Minerals Disclosure</font></td></tr><tr style="height:6pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr style="height:44pt"><td colspan="15" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-top:6pt;text-align:justify"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Ecovyst Inc.</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%"> </font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">and subsidiaries (the &#8220;Company&#8221; or &#8220;Ecovyst&#8221;) is a leading integrated and innovative global provider of advanced materials, specialty catalysts and services. The Company supports customers globally through its strategically located network of manufacturing facilities. The Company believes that its products and services contribute to improving the sustainability of the environment.</font></div></td></tr><tr style="height:6pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr style="height:113pt"><td colspan="15" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="text-align:justify"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">This Form SD of the Company is filed pursuant to Rule 13p-1 (the &#8220;Rule&#8221;) promulgated under the Securities Exchange Act of 1934, as amended, for the reporting period January 1, 2024 to December 31, 2024 (the &#8220;Reporting Period&#8221;). The Rule implements reporting and disclosure requirements related to &#8220;conflict minerals&#8221; as directed by the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 (the &#8220;Dodd-Frank Act&#8221;). Conflict minerals are defined by the United States Securities and Exchange Commission (the &#8220;SEC&#8221;) as columbite-tantalite (coltan), cassiterite, gold, wolframite, or their derivatives, which are currently limited to tantalum, tin, and tungsten (the &#8220;Conflict Minerals&#8221;). The Rule imposes certain reporting obligations on SEC registrants that manufacture or contract to manufacture products for which Conflict Minerals are necessary to the functionality or production of those products and contained in the finished products. The Rule requires that SEC registrants conduct in good faith a reasonable country of origin inquiry designed to determine whether any such necessary Conflict Minerals originated in the Democratic Republic of the Congo or &#8220;adjoining countries&#8221; (as defined by the SEC) (collectively, the &#8220;Covered Countries&#8221;) or are from recycled or scrap sources.</font></div></td></tr><tr style="height:12pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr style="height:15pt"><td colspan="15" style="padding:2px 1pt;text-align:justify;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">Item 1.01&#160;&#160;&#160;&#160;Conflict Minerals Disclosure and Report</font></td></tr><tr style="height:6pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr style="height:104pt"><td colspan="15" style="padding:2px 1pt;text-align:justify;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">The Company reviewed the finished products that it and its subsidiaries manufactures either internally or pursuant to arrangements with third-party manufacturers during the Reporting Period (the &#8220;Product Review&#8221;). The objective of the Product Review was to identify finished products that the Company and its subsidiaries manufactures or contracts to manufacture that may contain one or more Conflict Minerals. In this effort, the Director of Product Stewardship of the Company routinely evaluated and verified the source and use of raw materials purchased and used by the Company and its subsidiaries globally to determine whether any Conflict Minerals used in the Company&#8217;s and its subsidiaries&#8217; products are sourced from Covered Countries or are from recycled or scrap sources. The Company has determined that Conflict Minerals are contained in, and are necessary to the functionality or production of, a finished product that contains silicotungstic acid, which is a tungsten compound. The Company&#8217;s Advanced Materials &#38; Catalysts segment purchased ten metric tons of such tungsten compound, which is used as a raw material to manufacture, and is contained in, a certain catalyst product (the &#8220;Covered Product&#8221;).</font></td></tr><tr style="height:6pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr style="height:63pt"><td colspan="15" style="padding:2px 1pt;text-align:justify;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">As a result of such determination, and in accordance with the Dodd-Frank Act and the Rule, the Company conducted in good faith a reasonable country of origin inquiry as to the tungsten compound contained in the Covered Product by seeking a certification from the direct, exclusive supplier of such compound (the &#8220;Covered Supplier&#8221;). The Covered Supplier has provided the Company with a signed certification of the name and location of each smelter from which the Covered Supplier sources the tungsten used in producing the tungsten compound that is contained in the Covered Product (the &#8220;Supplier Certification&#8221;). According to the Supplier Certification, none of the tungsten contained in the Covered Product was sourced from smelters in any Covered Country.</font></td></tr><tr style="height:6pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr style="height:33pt"><td colspan="15" style="padding:2px 1pt;text-align:justify;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Based on the results of its reasonable country of origin inquiry, and its review of the information and the Supplier Certification, the Company has no reason to believe that the tungsten contained in the Covered Product may have originated in any of the Covered Countries or may not be from recycled or scrap sources.</font></td></tr><tr style="height:6pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr style="height:24pt"><td colspan="15" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">This conflict minerals disclosure is publicly available on the Company&#8217;s website at https&#58;&#47;&#47;investor.ecovyst.com&#47;management-governance&#47;governance-documents.</font></td></tr><tr style="height:8pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr style="height:15pt"><td colspan="15" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">Item 1.02&#160;&#160;&#160;&#160;Exhibit</font></td></tr><tr style="height:6pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr style="height:15pt"><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">None.</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr></table></div><div style="text-align:center"><font><br></font></div><div id="i4567a8406cd5421f93595c5be0b0a3e5_10"></div><div style="text-align:center"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:540.00pt"><tr><td style="width:1.0pt"></td><td style="width:106.00pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:106.00pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:106.00pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:106.00pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:106.00pt"></td><td style="width:1.0pt"></td></tr><tr style="height:15pt"><td colspan="15" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">Section 2 &#8211; Resource Extraction Issuer Disclosure</font></td></tr><tr style="height:6pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr style="height:15pt"><td colspan="15" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">Item 2.01&#160;&#160;&#160;&#160;Resource Extraction Issuer Disclosure Report</font></td></tr><tr style="height:6pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr style="height:15pt"><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Not applicable.</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr></table></div><div style="text-align:center"><font><br></font></div><div id="i4567a8406cd5421f93595c5be0b0a3e5_13"></div><div style="text-align:center"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:540.00pt"><tr><td style="width:1.0pt"></td><td style="width:106.00pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:106.00pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:106.00pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:106.00pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:106.00pt"></td><td style="width:1.0pt"></td></tr><tr style="height:15pt"><td colspan="15" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">Section 3 &#8211; Exhibits</font></td></tr><tr style="height:6pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr style="height:15pt"><td colspan="15" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">Item 3.01&#160;&#160;&#160;&#160;Exhibit</font></td></tr><tr style="height:6pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr style="height:15pt"><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">None.</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr></table></div><div style="height:36pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div><font><br></font></div></div></div><div id="i4567a8406cd5421f93595c5be0b0a3e5_16"></div><hr style="page-break-after:always"><div style="min-height:36pt;width:100%"><div><font><br></font></div><div><font><br></font></div></div><div style="text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">SIGNATURES</font></div><div style="text-align:center"><font><br></font></div><div style="text-align:center"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:537.00pt"><tr><td style="width:1.0pt"></td><td style="width:34.75pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:144.25pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:31.75pt"></td><td style="width:1.0pt"></td><td style="width:1.0pt"></td><td style="width:318.25pt"></td><td style="width:1.0pt"></td></tr><tr style="height:23pt"><td colspan="12" style="padding:2px 1pt;text-align:justify;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">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 duly authorized undersigned.</font></td></tr><tr style="height:15pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr style="height:15pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="6" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">Ecovyst Inc.</font></td></tr><tr style="height:15pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr style="height:15pt"><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Date&#58;</font></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">May 30, 2025</font></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">By&#58;</font></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">&#47;s&#47; JOSEPH S. KOSCINSKI</font></td></tr><tr style="height:15pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Name&#58;</font></td><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Joseph S. Koscinski</font></td></tr><tr style="height:15pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Title&#58;</font></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Vice President, Chief Administrative Officer, General Counsel and Secretary</font></td></tr></table></div><div style="height:36pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div><font><br></font></div></div></div></body></html>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
