BIEBER MICHAEL A 4

4 · Willdan Group, Inc. · Filed Mar 26, 2026

AI-generated summary of this filing

Updated Mar 26, 2026

Willdan (WLDN) CEO Michael Bieber Receives Award

What Happened

Michael A. Bieber, President & CEO and a director of Willdan Group, received 15,750 performance-based restricted stock units (RSUs) that vested on March 25, 2026 (grant value reported at $0.00). To satisfy tax withholding obligations associated with the vesting, 6,444 shares were withheld/disposed at $82.80 per share, representing approximately $533,563. The vesting resulted from the issuer’s Compensation Committee determining performance conditions had been met for the March 20, 2024 award.

Key Details

Transaction date: March 25, 2026; Form 4 filed March 26, 2026 (timely filing).
Award: 15,750 performance-based RSUs vested (code A; $0.00 per share reported).
Withholding/Disposition: 6,444 shares withheld/disposed (code F) at $82.80 per share; total ≈ $533,563 to cover tax obligations.
Shares owned after the transaction: not specified in the provided excerpt of the filing.
Notable footnotes:
- F1: These RSUs were granted on March 20, 2024 and vested after the Compensation Committee certified performance on March 25, 2026.
- F2: The filing also discloses additional outstanding/time‑based RSUs that remain unvested (18,000; 12,834; 5,834 shares with various vesting dates in 2027–2029).
- F3: The 6,444-share disposition represents shares withheld to satisfy the tax withholding obligation (cashless withholding), not an open-market sale.

Context

This was a vesting of previously granted performance RSUs, not a market purchase or voluntary sale by the insider. The withheld shares reflect standard tax withholding practices upon vesting (a routine administrative step), while remaining unvested RSUs continue to follow their scheduled vesting dates.

Form 4

Period: 2026-03-25

DirectorPRESIDENT AND CEO

Transactions

Award
Common Stock
[F1][F2]
2026-03-25+15,750→ 255,969 total
Tax Payment
Common Stock
[F3][F2]
2026-03-25$82.80/sh−6,444$533,563→ 249,525 total

Footnotes (3)

[F1]Represents performance-based restricted stock units previously granted to the Reporting Person by the Issuer on March 20, 2024. The performance conditions applicable to the award were determined to have been satisfied by the Issuer's Compensation Committee effective on March 25, 2026, resulting in the immediate vesting of the restricted stock units as to 15,750 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) 12,834 shares of restricted stock units that vest in two substantially equal installments on each of March 17, 2027 and March 17, 2028, and (iii) 5,834 shares of restricted stock units that vest on 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).

Signature

/s/ Creighton K. Early, Attorney-in-fact for Michael A. Bieber|2026-03-26

1 file