Michael A. Bieber

Companies

• Willdan GroupBoard member Mar 11, 2024 to now¹
• Willdan GroupChief executive officer Mar 11, 2024 to now¹
• Willdan GroupPresident Nov 4, 2016 to Jun 22, 2020²
• Willdan GroupSVP, Corporate Development Jan 7, 2015 to Mar 14, 2016³
• Tetra TechVICE PRESIDENT Mar 8, 2006 to Feb 27, 2015⁴

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• Willdan Group WLDN249,525 shares⁵$17.9M at $71.61May 14, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• May 14, 2026Sold 276 shares at $93.74 of Willdan Group⁵
• May 14, 2026Sold 7,956 shares at $92.65 of Willdan Group⁵
• May 14, 2026Sold 23,015 shares at $91.95 of Willdan Group⁵
• May 14, 2026Sold 25,429 shares at $90.88 of Willdan Group⁵
• May 14, 2026Exercised options 16,667 shares at $28.19 of Willdan Group⁵
• May 14, 2026Exercised options 40,009 shares at $16.27 of Willdan Group⁵
• May 13, 2026Sold 9,991 shares at $92.65 of Willdan Group⁶
• May 13, 2026Exercised options 9,991 shares at $16.27 of Willdan Group⁶
• Mar 25, 2026Shares withheld for tax 6,444 shares at $82.80 of Willdan Group⁷
• Mar 25, 2026Granted 15,750 shares of Willdan Group⁷
• Mar 20, 2026Shares withheld for tax 2,387 shares at $75.52 of Willdan Group⁸
• Mar 17, 2026Shares withheld for tax 2,625 shares at $78.29 of Willdan Group⁹
• Mar 16, 2026Shares withheld for tax 7,090 shares at $78.61 of Willdan Group¹⁰
• Mar 16, 2026Granted 17,326 shares of Willdan Group¹⁰
• Mar 11, 2026Shares withheld for tax 7,697 shares at $83.98 of Willdan Group¹¹
• Mar 11, 2026Granted 18,810 shares of Willdan Group¹¹
• Mar 9, 2026Shares withheld for tax 1,814 shares at $82.98 of Willdan Group¹²
• Mar 3, 2026Granted 18,000 shares of Willdan Group¹³
• Aug 18, 2025Shares withheld for tax 6,788 shares at $109.53 of Willdan Group¹⁴
• Aug 18, 2025Granted 12,963 shares of Willdan Group¹⁴
• May 16, 2025Sold 25,000 shares at $48.11 of Willdan Group¹⁵
• May 16, 2025Exercised options 25,000 shares at $13.91 of Willdan Group¹⁵
• Mar 24, 2025Shares withheld for tax 8,246 shares at $42.53 of Willdan Group¹⁶
• Mar 24, 2025Granted 15,750 shares of Willdan Group¹⁶
• Mar 20, 2025Shares withheld for tax 3,054 shares at $43.06 of Willdan Group¹⁷