<SEC-DOCUMENT>0000851520-21-000012.txt : 20210212
<SEC-HEADER>0000851520-21-000012.hdr.sgml : 20210212
<ACCEPTANCE-DATETIME>20210212215550
ACCESSION NUMBER:		0000851520-21-000012
CONFORMED SUBMISSION TYPE:	5
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210101
FILED AS OF DATE:		20210212
DATE AS OF CHANGE:		20210212

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Pye John
		CENTRAL INDEX KEY:			0001686997

	FILING VALUES:
		FORM TYPE:		5
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-18655
		FILM NUMBER:		21631658

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

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			EXPONENT INC
		CENTRAL INDEX KEY:			0000851520
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-MANAGEMENT CONSULTING SERVICES [8742]
		IRS NUMBER:				770218904
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0103

	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
</SEC-HEADER>
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            <officerTitle>Group Vice President</officerTitle>
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    <footnotes>
        <footnote id="F1">Reporting purchase of ESPP shares that were not previously reported on the Form 5 dated 1/3/2020.</footnote>
        <footnote id="F2">Acquisition of stock pursuant to Exponent, Inc. Employee Stock Purchase Plan under the provisions of Section 423 of the Internal Revenue Code in a transaction exempt under SEC Rule 16b-3.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>By: Wendy Whitehouse For: John Pye</signatureName>
        <signatureDate>2021-02-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</SEC-DOCUMENT>
