Willdan Group, Inc.

Entry into a Material Definitive Agreement

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G)

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

Annual Report Scanned (Paper)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Annual report pursuant to Section 13 or 15(d)

Results of Operations and Financial Condition

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

Annual Report Scanned (Paper)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Annual report pursuant to Section 13 or 15(d)

Results of Operations and Financial Condition

5.02,9.01

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

General form for quarterly reports under Section 13 or 15(d)

2.02,9.01

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

5.02,5.07,9.01

General form for quarterly reports under Section 13 or 15(d)

2.02,9.01

Annual Report Scanned (Paper)

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Notice of Effectiveness

Correspondence with the SEC

Letter from the SEC

Annual report pursuant to Section 13 or 15(d)

Registration statement under Securities Act of 1933

2.02,9.01

5.02,7.01,9.01

5.02,9.01

5.02,7.01,9.01

General form for quarterly reports under Section 13 or 15(d)

2.02,9.01

General form for quarterly reports under Section 13 or 15(d)

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

General form for quarterly reports under Section 13 or 15(d)

Annual Report Scanned (Paper)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

General form for quarterly reports under Section 13 or 15(d)

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Annual report pursuant to Section 13 or 15(d) (amendment)

Annual report pursuant to Section 13 or 15(d)

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Notice of Effectiveness

Letter from the SEC

Correspondence with the SEC

Registration statement under Securities Act of 1933

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

No description available

No description available

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Prospectus Supplement for Primary Offering

Free Writing Prospectus

Prospectus Supplement for Primary Offering

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Letter from the SEC

Notice of Effectiveness

Correspondence with the SEC

Registration statement under Securities Act of 1933 (amendment)

Correspondence with the SEC

Correspondence with the SEC

Registration statement under Securities Act of 1933 (amendment)

Correspondence with the SEC

Correspondence with the SEC

No description available

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Registration statement under Securities Act of 1933

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Brisbin Thomas Donald

Brisbin Thomas Donald

Brisbin Thomas Donald

Brisbin Thomas Donald

Brisbin Thomas Donald

Brisbin Thomas Donald

Brisbin Thomas Donald

Shahidehpour Mohammad

Downes Cynthia

Brisbin Thomas Donald

REDER WANDA KAY

McGinn Dennis V

Cohen Steven A

BIEBER MICHAEL A

BIEBER MICHAEL A

BIEBER MICHAEL A

BIEBER MICHAEL A