• Willdan Group CEO Michael A. Bieber reported sales totaling 56,676 common shares on May 14, 2026 at weighted average prices ranging from $90.88 to $93.74.
• He also exercised stock options for 56,676 shares at $16.27 and $28.19 per share.
• He reported direct ownership of 249,525 common shares following transactions.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Willdan Group Inc. published the original content used to generate this news brief via EDGAR, the Electronic Data Gathering, Analysis, and Retrieval system operated by the U.S. Securities and Exchange Commission (Ref. ID: 0001270606-26-000017), on May 15, 2026, and is solely responsible for the information contained therein.