BIEBER MICHAEL A 4

4 · Willdan Group, Inc. · Filed Mar 17, 2026

AI-generated summary of this filing

Updated Mar 17, 2026

Willdan (WLDN) CEO Michael Bieber Receives Award; Shares Withheld

What Happened

Michael A. Bieber, President, CEO and Director of Willdan Group, had 17,326 performance-based restricted stock units (RSUs) vest on March 16, 2026 (award originally granted March 17, 2025). The vested RSUs had a gross value of about $1.36 million based on $78.61 per share.
To satisfy tax withholding obligations, 7,090 of those vested shares were withheld (disposed) at $78.61 each, totaling $557,345. After withholding, Bieber retained a net of 10,236 vested shares (17,326 - 7,090).

Key Details

Transaction dates: March 16, 2026 (vest and withholding); Form 4 filed March 17, 2026 (appears timely).
Award (code A): 17,326 shares acquired at $0.00 (RSU vesting).
Tax withholding (code F): 7,090 shares disposed at $78.61, proceeds ~$557,345.
Net shares retained from this vesting: 10,236 shares.
Notable footnotes:
- F1: These were performance-based RSUs granted March 17, 2025; performance conditions were certified and awards vested March 16, 2026.
- F3: The 7,090-shares disposition represents shares withheld to satisfy tax withholding on the vested RSUs.
- F2: Bieber still holds additional unvested RSUs totaling 48,917 shares that vest on various dates through 2029, subject to continued service.
Shares owned after the transaction: not disclosed in the supplied filing summary.

Context

This was not an open-market sale or purchase by the insider; it was the scheduled vesting of performance RSUs, with shares withheld to cover taxes (a common, administrative action).
The withholding is effectively a cashless tax settlement and does not necessarily signal a deliberate sale for investment reasons.

Form 4

Period: 2026-03-16

DirectorPRESIDENT AND CEO

Transactions

Award
Common Stock
[F1][F2]
2026-03-16+17,326→ 252,321 total
Tax Payment
Common Stock
[F3][F2]
2026-03-16$78.61/sh−7,090$557,345→ 245,231 total

Footnotes (3)

[F1]Represents performance-based restricted stock units previously granted to the Reporting Person by the Issuer on March 17, 2025. The performance conditions applicable to the award were determined to have been satisfied by the Issuer's Compensation Committee effective on March 16, 2026, resulting in the immediate vesting of the restricted stock units as to 17,326 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).

Signature

/s/ Creighton K. Early, Attorney-in-fact for Michael A. Bieber|2026-03-17

1 file