<SEC-DOCUMENT>0001104659-26-078320-index.html : 20260626
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<ACCEPTANCE-DATETIME>20260626170558
ACCESSION NUMBER:		0001104659-26-078320
CONFORMED SUBMISSION TYPE:	S-8
PUBLIC DOCUMENT COUNT:		14
FILED AS OF DATE:		20260626
DATE AS OF CHANGE:		20260626
EFFECTIVENESS DATE:		20260626

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Willdan Group, Inc.
		CENTRAL INDEX KEY:			0001370450
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-ENGINEERING SERVICES [8711]
		ORGANIZATION NAME:           	07 Trade & Services
		EIN:				141951112
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0101

	FILING VALUES:
		FORM TYPE:		S-8
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-297081
		FILM NUMBER:		261130314

	BUSINESS ADDRESS:	
		STREET 1:		2401 EAST KATELLA AVENUE, SUITE 300
		CITY:			ANAHEIM
		STATE:			CA
		ZIP:			92806
		BUSINESS PHONE:		800-424-9144

	MAIL ADDRESS:	
		STREET 1:		2401 EAST KATELLA AVENUE, SUITE 300
		CITY:			ANAHEIM
		STATE:			CA
		ZIP:			92806
</SEC-HEADER>
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<TYPE>S-8
<SEQUENCE>1
<FILENAME>wldn-20260626xs8.htm
<DESCRIPTION>S-8
<TEXT>
Document 1 - file: wldn-20260626xs8.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-5.1 <SEQUENCE>2 <FILENAME>wldn-20260626xex5d1.htm <DESCRIPTION>EX-5.1 <TEXT> Document 2 - file: wldn-20260626xex5d1.htm
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</DOCUMENT> <DOCUMENT> <TYPE>EX-FILING FEES <SEQUENCE>4 <FILENAME>wldn-20260626xexfees.htm <DESCRIPTION>EX-FILING FEES <TEXT> Document 4 - file: wldn-20260626xexfees.htm
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</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>11 <FILENAME>Show.js <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 11 - file: Show.js
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>13 <FILENAME>FilingSummary.xml <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 13 - file: FilingSummary.html
Document 13 - RAW XML: FilingSummary.xml
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</DOCUMENT> <DOCUMENT> <TYPE>ZIP <SEQUENCE>16 <FILENAME>0001104659-26-078320-xbrl.zip <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 16 - file: 0001104659-26-078320-xbrl.zip
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Document 17 - RAW XML: wldn-20260626xexfees_htm.xml
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