MA/A 0001782739 XXXXXXXX Mark 951-587-3542 mrisco@willdan.com mrisco@willdan.com rsmith@willdan.com Willdan Financial Services 33-0302345 867-02474 27368 VIA INDUSTRIA, SUITE 200 TEMECULA CA 92590 951-587-3500 Add 3039904616 Add 5108532612 N www.willdan.com Mark Joseph Risco

27368 VIA INDUSTRIA, SUITE 200 Temecula CA 92590

951-587-3542 951-587-3510 mrisco@willdan.com December CA 06-24-1988 N 54 5 0 0 0 1 Municipal Entities 0 0 0 Not Applicable Hourly Charges Fixed Fees Contingent Fees Not Applicable Advice Insurance Of MS Advice On Selection Y Administration of Community Facility and Assessment Districts, rate studies, impact fees, cost allocation plans, user fee studies, arbitrage rebate and continuing disclosure. 0 N N N N N N N N N N N N N Willdan Group, Inc. 0001370450 Schedule A N N N N N N N N N N N N N N N N N N N N N N N N N Y Willdan Group Inc. Y 14-1951112 Holding Company 02-13-2006 E Y Thomas Donald Brisbin Chief Executive Officer 04-01-2007 NA Y 000000000 Michael Andrew Bieber President 01-01-2015 NA Y 000000000 Daniel NMN Chow Chief Operating Officer 12-01-2018 NA Y 000000000 Mark Joseph Risco Chief Compliance Officer 08-15-2019 NA Y 000000000 Micah NMN Chen Vice President, General Counsel 03-01-2018 NA Y 000000000 Paul Milton Whitelaw Senior Vice President, Business Development 03-01-2018 NA N 000000000 Creighton Kim Early Vice President and Chief Financial Officer 04-16-2021 NA Y 000000000 Willdan Group Inc. Y 14-1951112 Holding Company 02-13-2006 E Y Thomas Donald Brisbin Chief Executive Officer 04-01-2007 NA Y 000000000 Michael Andrew Bieber President 01-01-2015 NA Y 000000000 Delete Daniel NMN Chow Chief Operating Officer 12-01-2018 NA Y 000000000 Mark Joseph Risco Chief Compliance Officer 08-15-2019 NA Y 000000000 Micah NMN Chen Vice President, General Counsel 03-01-2018 NA Y 000000000 Paul Milton Whitelaw Senior Vice President, Business Development 03-01-2018 NA N 000000000 Creighton Kim Early Vice President and Chief Financial Officer 04-16-2021 NA Y 000000000 Mark Risco Mark Risco Chief Compliance Officer 12-21-2021 N N N N N N N Y N N N N N N N N N Y N N Y