<SEC-DOCUMENT>0002007317-25-000954.txt : 20250822
<SEC-HEADER>0002007317-25-000954.hdr.sgml : 20250822
<ACCEPTANCE-DATETIME>20250822162911
ACCESSION NUMBER:		0002007317-25-000954
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20250822
DATE AS OF CHANGE:		20250822

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			LITTELFUSE INC /DE
		CENTRAL INDEX KEY:			0000889331
		STANDARD INDUSTRIAL CLASSIFICATION:	SWITCHGEAR & SWITCHBOARD APPARATUS [3613]
		ORGANIZATION NAME:           	04 Manufacturing
		EIN:				363795742
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1227

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	000-20388
		FILM NUMBER:		251246643

	BUSINESS ADDRESS:	
		STREET 1:		6133 NORTH RIVER ROAD
		STREET 2:		SUITE 500
		CITY:			ROSEMONT
		STATE:			IL
		ZIP:			60018
		BUSINESS PHONE:		773-628-1000

	MAIL ADDRESS:	
		STREET 1:		6133 NORTH RIVER ROAD
		STREET 2:		SUITE 500
		CITY:			ROSEMONT
		STATE:			IL
		ZIP:			60018

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Sethna Meenal
		CENTRAL INDEX KEY:			0001643464
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		8755 WEST HIGGINS ROAD
		STREET 2:		SUITE 500
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60631

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Seetha Meenal
		DATE OF NAME CHANGE:	20150527
</SEC-HEADER>
<DOCUMENT>
<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
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  <headerData>
    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001643464</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0000889331</issuerCik>
      <issuerName>LITTELFUSE INC /DE</issuerName>
      <secFileNumber>000-20388</secFileNumber>
      <issuerAddress>
        <com:street1>6133 NORTH RIVER ROAD</com:street1>
        <com:street2>SUITE 500</com:street2>
        <com:city>ROSEMONT</com:city>
        <com:stateOrCountry>IL</com:stateOrCountry>
        <com:zipCode>60018</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>773-628-1000</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Sethna Meenal</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>former officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Merrill</name>
        <address>
          <com:street1>8890 Lyra Dr 5th Flr</com:street1>
          <com:city>Columbus</com:city>
          <com:stateOrCountry>OH</com:stateOrCountry>
          <com:zipCode>43240</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>15119</noOfUnitsSold>
      <aggregateMarketValue>3965248.00</aggregateMarketValue>
      <noOfUnitsOutstanding>24781588</noOfUnitsOutstanding>
      <approxSaleDate>08/22/2025</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>04/23/2020</acquiredDate>
      <natureOfAcquisitionTransaction>Stock option exercise</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Littelfuse, Inc</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>15119</amountOfSecuritiesAcquired>
      <paymentDate>08/22/2025</paymentDate>
      <natureOfPayment>cash</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Meenal Sethna</name>
        <address>
          <com:street1>6133 North River Rd Ste 500</com:street1>
          <com:city>Rosemont</com:city>
          <com:stateOrCountry>IL</com:stateOrCountry>
          <com:zipCode>60018</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>08/12/2025</saleDate>
      <amountOfSecuritiesSold>2923</amountOfSecuritiesSold>
      <grossProceeds>745804.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Meenal Sethna</name>
        <address>
          <com:street1>6133 North River Rd Ste 500</com:street1>
          <com:city>Rosemont</com:city>
          <com:stateOrCountry>IL</com:stateOrCountry>
          <com:zipCode>60018</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>08/13/2025</saleDate>
      <amountOfSecuritiesSold>11256</amountOfSecuritiesSold>
      <grossProceeds>2926188.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Meenal Sethna</name>
        <address>
          <com:street1>6133 North River Rd ste 500</com:street1>
          <com:city>Rosemont</com:city>
          <com:stateOrCountry>IL</com:stateOrCountry>
          <com:zipCode>60018</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>common</securitiesClassTitle>
      <saleDate>08/14/2025</saleDate>
      <amountOfSecuritiesSold>40</amountOfSecuritiesSold>
      <grossProceeds>10331.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Meenal Sethna</name>
        <address>
          <com:street1>6133 North River Rd Ste 500</com:street1>
          <com:city>Rosemont</com:city>
          <com:stateOrCountry>IL</com:stateOrCountry>
          <com:zipCode>60018</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>08/15/2025</saleDate>
      <amountOfSecuritiesSold>100</amountOfSecuritiesSold>
      <grossProceeds>25737.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Meenal Sethna</name>
        <address>
          <com:street1>6133 North River Rd Ste 500,</com:street1>
          <com:city>Rosemont</com:city>
          <com:stateOrCountry>IL</com:stateOrCountry>
          <com:zipCode>60018</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>08/19/2025</saleDate>
      <amountOfSecuritiesSold>1719</amountOfSecuritiesSold>
      <grossProceeds>438936.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>08/22/2025</noticeDate>
      <signature>Meenal Sethna</signature>
    </noticeSignature>
  </formData>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
