<SEC-DOCUMENT>0001972362-24-000106.txt : 20240209
<SEC-HEADER>0001972362-24-000106.hdr.sgml : 20240209
<ACCEPTANCE-DATETIME>20240209172131
ACCESSION NUMBER:		0001972362-24-000106
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20240209
DATE AS OF CHANGE:		20240209

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			EXPONENT INC
		CENTRAL INDEX KEY:			0000851520
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-MANAGEMENT CONSULTING SERVICES [8742]
		ORGANIZATION NAME:           	07 Trade & Services
		IRS NUMBER:				770218904
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1229

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	000-18655
		FILM NUMBER:		24616230

	BUSINESS ADDRESS:	
		STREET 1:		EXPONENT INC
		STREET 2:		149 COMMONWEALTH DRIVE
		CITY:			MENLO PARK
		STATE:			CA
		ZIP:			94025
		BUSINESS PHONE:		650-326-9400

	MAIL ADDRESS:	
		STREET 1:		EXPONENT INC
		STREET 2:		149 COMMONWEALTH DRIVE
		CITY:			MENLO PARK
		STATE:			CA
		ZIP:			94025

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FAILURE GROUP INC
		DATE OF NAME CHANGE:	19930831

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Guyer Eric
		CENTRAL INDEX KEY:			0001972477
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		149 COMMONWEALTH DRIVE
		CITY:			MENLO PARK
		STATE:			CA
		ZIP:			94025
</SEC-HEADER>
<DOCUMENT>
<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001972477</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0000851520</issuerCik>
      <issuerName>EXPONENT INC</issuerName>
      <secFileNumber>000-18655</secFileNumber>
      <issuerAddress>
        <com:street1>149 COMMONWEALTH DRIVE</com:street1>
        <com:city>MENLO PARK</com:city>
        <com:stateOrCountry>CA</com:stateOrCountry>
        <com:zipCode>94025</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>650-326-9400</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Guyer Eric</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Morgan Stanley Smith Barney LLC Executive Services</name>
        <address>
          <com:street1>200 W Civic Center Dr - 4th Floor</com:street1>
          <com:city>SANDY</com:city>
          <com:stateOrCountry>UT</com:stateOrCountry>
          <com:zipCode>84070</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>3367</noOfUnitsSold>
      <aggregateMarketValue>264289.18</aggregateMarketValue>
      <noOfUnitsOutstanding>50600000</noOfUnitsOutstanding>
      <approxSaleDate>02/09/2024</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <acquiredDate>03/15/2023</acquiredDate>
      <natureOfAcquisitionTransaction>RESTRICTED STOCK</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>1656</amountOfSecuritiesAcquired>
      <paymentDate>03/15/2023</paymentDate>
      <natureOfPayment>COMPENSATION</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <acquiredDate>03/15/2019</acquiredDate>
      <natureOfAcquisitionTransaction>RESTRICTED STOCK</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>1711</amountOfSecuritiesAcquired>
      <paymentDate>03/15/2019</paymentDate>
      <natureOfPayment>COMPENSATION</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>02/09/2024</noticeDate>
      <signature>/s/ Eric Paul Guyer</signature>
    </noticeSignature>
  </formData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
