<SEC-DOCUMENT>0000764532-25-000006.txt : 20250220
<SEC-HEADER>0000764532-25-000006.hdr.sgml : 20250220
<ACCEPTANCE-DATETIME>20250220134116
ACCESSION NUMBER:		0000764532-25-000006
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20250220
DATE AS OF CHANGE:		20250220

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TRIMAS CORP
		CENTRAL INDEX KEY:			0000842633
		STANDARD INDUSTRIAL CLASSIFICATION:	METAL FORGING & STAMPINGS [3460]
		ORGANIZATION NAME:           	04 Manufacturing
		IRS NUMBER:				382687639
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-40013
		FILM NUMBER:		25644506

	BUSINESS ADDRESS:	
		STREET 1:		38505 WOODWARD AVENUE
		STREET 2:		SUITE 200
		CITY:			BLOOMFIELD HILLS
		STATE:			MI
		ZIP:			48304
		BUSINESS PHONE:		2486315400

	MAIL ADDRESS:	
		STREET 1:		38505 WOODWARD AVENUE
		STREET 2:		SUITE 200
		CITY:			BLOOMFIELD HILLS
		STATE:			MI
		ZIP:			48304

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FIDUCIARY MANAGEMENT INC /WI/
		CENTRAL INDEX KEY:			0000764532
		ORGANIZATION NAME:           	
		IRS NUMBER:				391346018
		STATE OF INCORPORATION:			WI
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G

	BUSINESS ADDRESS:	
		STREET 1:		790 N. WATER STREET
		STREET 2:		SUITE 2100
		CITY:			MILWAUKEE
		STATE:			WI
		ZIP:			53202
		BUSINESS PHONE:		4142264545

	MAIL ADDRESS:	
		STREET 1:		790 N. WATER STREET
		STREET 2:		SUITE 2100
		CITY:			MILWAUKEE
		STATE:			WI
		ZIP:			53202
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13G
<SEQUENCE>1
<FILENAME>primary_doc.xml
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      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <eventDateRequiresFilingThisStatement>02/10/2025</eventDateRequiresFilingThisStatement>
      <issuerInfo>
        <issuerCik>0000842633</issuerCik>
        <issuerName>TRIMAS CORP</issuerName>
        <issuerCusip>896215209</issuerCusip>
        <issuerPrincipalExecutiveOfficeAddress>
          <com:street1>38505 WOODWARD AVENUE</com:street1>
          <com:street2>SUITE 200</com:street2>
          <com:city>BLOOMFIELD HILLS</com:city>
          <com:stateOrCountry>MI</com:stateOrCountry>
          <com:zipCode>48304</com:zipCode>
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      <citizenshipOrOrganization>WI</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
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      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>2013835.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <classPercent>5.0</classPercent>
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        <issuerName>TRIMAS CORP</issuerName>
        <issuerPrincipalExecutiveOfficeAddress>38505 WOODWARD AVENUE, SUITE 200, BLOOMFIELD HILLS, MICHIGAN, 48304</issuerPrincipalExecutiveOfficeAddress>
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        <principalBusinessOfficeOrResidenceAddress>790 N. Water Street
Suite 2100
Milwaukee, WI  53202
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        <citizenship>Wisconsin</citizenship>
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          <sharedPowerOrDirectToDispose>0</sharedPowerOrDirectToDispose>
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      </item4>
      <item5>
        <notApplicableFlag>N</notApplicableFlag>
        <classOwnership5PercentOrLess>Y</classOwnership5PercentOrLess>
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    <signatureInformation>
      <reportingPersonName>FIDUCIARY MANAGEMENT INC /WI/</reportingPersonName>
      <signatureDetails>
        <signature>Jessica Taske</signature>
        <title>Vice President</title>
        <date>02/20/2025</date>
      </signatureDetails>
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