MICHAEL A. BIEBER - 11 Mar 2026 Form 4 Insider Report for Willdan Group, Inc. (WLDN)

Role
PRESIDENT AND CEO, Director
Signature
/s/ Creighton K. Early, Attorney-in-fact for Michael A. Bieber
Issuer symbol
WLDN
Transactions as of
11 Mar 2026
Net transactions value
$0
Form type
4
Filing time
12 Mar 2026, 17:33:17 UTC
Previous filing
11 Mar 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
BIEBER MICHAEL A PRESIDENT AND CEO, Director 2401 EAST KATELLA AVENUE, SUITE 300, ANAHEIM /s/ Creighton K. Early, Attorney-in-fact for Michael A. Bieber 12 Mar 2026 0001270606

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction WLDN Common Stock Award +18,810 +8.4% $0.000000* 242,692 11 Mar 2026 Direct F1, F2
transaction WLDN Common Stock Tax liability -7,697 -3.2% $83.98* 234,995 11 Mar 2026 Direct F2, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents performance-based restricted stock units previously granted to the Reporting Person by the Issuer on March 7, 2023. The performance conditions applicable to the award were determined to have been satisfied by the Issuer's Compensation Committee effective on March 11, 2026, resulting in the immediate vesting of the restricted stock units as to 18,810 shares of Common Stock.
F2 Includes (i) 18,000 shares of restricted stock units that vest in three substantially equal installments on each of March 3, 2027, March 3, 2028 and March 3, 2029, (ii) 19,250 shares of restricted stock units that vest in three substantially equal installments on each of March 17, 2026, March 17, 2027 and March 17, 2028, and (iii) 11,667 shares of restricted stock units that vest in two substantially equal installments on each of March 20, 2026 and March 20, 2027, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.
F3 Represents shares of the Issuer's Common Stock withheld to satisfy tax withholding obligations in connection with the vesting of the performance-based restricted stock units referenced in footnote (1).