Ernest E. Maddock

Companies

• TeradyneBoard member Nov 16, 2022 to now¹
• AvnetBoard member Aug 26, 2021 to now²

Holdings

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

Shares held

• Teradyne TER10,269 shares³$3.5M at $343.21Sep 25, 2026
• Avnet AVT5,265 shares⁴$473.7K at $89.97Sep 25, 2026

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

Recent filings

• Sep 25, 2026Other 2 shares of Teradyne³
• Jun 12, 2026Other 2 shares of Teradyne⁵
• May 8, 2026Granted 668 shares of Teradyne⁶
• Mar 13, 2026Other 2 shares of Teradyne⁷
• Dec 17, 2025Other 2 shares of Teradyne⁸
• Sep 29, 2025Other 3 shares of Teradyne⁹
• Jun 13, 2025Other 6 shares of Teradyne¹⁰
• May 9, 2025Granted 2,971 shares of Teradyne¹¹
• Mar 14, 2025Other 3 shares of Teradyne¹²
• Dec 18, 2024Other 2 shares of Teradyne¹³
• Sep 27, 2024Other 2 shares of Teradyne¹⁴
• Jun 14, 2024Other 2 shares of Teradyne¹⁵
• May 9, 2024Granted 1,876 shares of Teradyne¹⁶
• Feb 1, 2024Bought 1,000 shares at $94.07 of Teradyne¹⁷
• May 12, 2023Granted 2,530 shares of Teradyne¹⁸
• Nov 14, 2022Granted 1,198 shares of Teradyne¹⁹
• Jan 3, 2022Granted 3,856 shares of Avnet²⁰
• Aug 25, 2021Granted 1,409 shares at $40.12 of Avnet²¹