BIEBER MICHAEL A 4

What Happened

• Michael A. Bieber, President, CEO and Director of Willdan Group, had 1,814 shares of common stock withheld (disposed) to satisfy tax withholding obligations tied to the vesting of restricted stock. The shares were recorded at $82.98 each, totaling approximately $150,526. This was an administrative tax-withholding action, not an open-market sale.

Key Details

• Transaction date: 2026-03-09; Report filed: 2026-03-11 (timely filing).
• Price per share: $82.98; Total value: $150,526 (1,814 shares).
• Transaction code: F — shares withheld to satisfy tax obligations on vested restricted stock.
• Footnote F1: These shares were withheld to cover taxes on restricted stock that vested on March 7, 2026; the restricted stock was originally granted March 7, 2023.
• Footnote F2: Remaining reported unvested RSUs include: 18,000 RSUs vesting in three equal installments on March 3 of 2027–2029; 19,250 RSUs vesting in three equal installments on March 17 of 2026–2028; and 11,667 RSUs vesting in two equal installments on March 20 of 2026–2027, all subject to continued service.
• Shares owned after the transaction are not specified in the provided excerpt.

Context

• Code F transactions are routine tax-withholding/cashless-settlement actions following vesting and do not necessarily indicate the insider’s view of the company. This was not an open-market sale or purchase; it’s an administrative disposition to satisfy tax liabilities.