QuickLinks -- Click here to rapidly navigate through this documentWarrant Agreement • November 3rd, 2006 • Willdan Group, Inc. • Services-engineering services • Delaware
Contract Type FiledNovember 3rd, 2006 Company Industry JurisdictionTHIS SECURITY (OR ITS PREDECESSOR) WAS ORIGINALLY ISSUED IN A TRANSACTION EXEMPT FROM REGISTRATION UNDER THE UNITED STATES SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), AND IS A RESTRICTED SECURITY (AS DEFINED IN RULE 144 UNDER THE SECURITIES ACT). THIS SECURITY MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED IN THE ABSENCE OF REGISTRATION OR AN APPLICABLE EXEMPTION THEREFROM. EACH PURCHASER OF THIS SECURITY IS HEREBY NOTIFIED THAT THE SELLER OF THIS SECURITY MAY BE RELYING ON THE EXEMPTION FROM THE PROVISIONS OF SECTION 5 OF THE SECURITIES ACT PROVIDED BY RULE 144A OR REGULATION S THEREUNDER.
QuickLinks -- Click here to rapidly navigate through this documentWarrant Agreement • September 19th, 2006 • Willdan Group, Inc. • Services-engineering services • Delaware
Contract Type FiledSeptember 19th, 2006 Company Industry JurisdictionTHIS SECURITY (OR ITS PREDECESSOR) WAS ORIGINALLY ISSUED IN A TRANSACTION EXEMPT FROM REGISTRATION UNDER THE UNITED STATES SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), AND IS A RESTRICTED SECURITY (AS DEFINED IN RULE 144 UNDER THE SECURITIES ACT). THIS SECURITY MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED IN THE ABSENCE OF REGISTRATION OR AN APPLICABLE EXEMPTION THEREFROM. EACH PURCHASER OF THIS SECURITY IS HEREBY NOTIFIED THAT THE SELLER OF THIS SECURITY MAY BE RELYING ON THE EXEMPTION FROM THE PROVISIONS OF SECTION 5 OF THE SECURITIES ACT PROVIDED BY RULE 144A OR REGULATION S THEREUNDER.