<SEC-DOCUMENT>0000902664-25-003402-index.html : 20250806
<SEC-HEADER>0000902664-25-003402.hdr.sgml : 20250806
<ACCEPTANCE-DATETIME>20250806190051
ACCESSION NUMBER:		0000902664-25-003402
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20250806
DATE AS OF CHANGE:		20250806

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Mativ Holdings, Inc.
		CENTRAL INDEX KEY:			0001000623
		STANDARD INDUSTRIAL CLASSIFICATION:	PAPER MILLS [2621]
		ORGANIZATION NAME:           	04 Manufacturing
		EIN:				621612879
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-48407
		FILM NUMBER:		251191099

	BUSINESS ADDRESS:	
		STREET 1:		100 KIMBALL PLACE
		STREET 2:		SUITE 600
		CITY:			ALPHARETTA
		STATE:			GA
		ZIP:			30009
		BUSINESS PHONE:		8005140186

	MAIL ADDRESS:	
		STREET 1:		100 KIMBALL PLACE
		STREET 2:		SUITE 600
		CITY:			ALPHARETTA
		STATE:			GA
		ZIP:			30009

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SCHWEITZER MAUDUIT INTERNATIONAL INC
		DATE OF NAME CHANGE:	19950914

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Boundary Creek Advisors LP
		CENTRAL INDEX KEY:			0001771944
		ORGANIZATION NAME:           	
		EIN:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		340 MADISON AVENUE, 12TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10173
		BUSINESS PHONE:		212-503-6260

	MAIL ADDRESS:	
		STREET 1:		340 MADISON AVENUE, 12TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10173
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13G/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
Document 1 - file: primary_doc.html

Document 1 - RAW XML: primary_doc.xml

</DOCUMENT>
</SEC-DOCUMENT>