• Willdan Group President, CEO, director Michael A. Bieber exercised stock options for 9,991 common shares on May 13, 2026 at USD 16.27 per share.
• Bieber sold 9,991 common shares same day at weighted average price USD 92.65.
• Directly held common shares totaled 249,525 following transactions.
• Stock options outstanding fell to 40,009 following exercise.

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: 0001270606-26-000015), on May 14, 2026, and is solely responsible for the information contained therein.