Ernest E. Maddock

Sits on 4 boards. Last updated September 28, 2026

Time on boards

Boards served
4
Current seats
4
Board service
14 years
Director since
2023

14 years of board service in total across 4 boards, counting each seat separately. Longest: Avnet Inc., 3 years.

Avnet Inc. Director
3 years ยท Since 2023
Ouster Inc. Director
3 years ยท Since 2023
Teradyne Inc. Director
3 years ยท Since 2023
3 years ยท Since 2023

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Date Company Transaction Shares Price Value
Jun 14, 2024 Teradyne Inc. Other +2 โ€” โ€”
May 22, 2024 Ultra Clean Holdings Inc. Grant or award +3,647 โ€” โ€”
May 9, 2024 Teradyne Inc. Grant or award +1,876 โ€” โ€”
Feb 1, 2024 Teradyne Inc. Open-market purchase +1,000 $94.07 $94,070
Nov 15, 2023 Ouster Inc. Open-market purchase +7,000 $5.29 $37,030
Aug 21, 2023 Ouster Inc. Open-market purchase +7,000 $6.02 $42,140
May 17, 2023 Ultra Clean Holdings Inc. Grant or award +5,296 โ€” โ€”
May 12, 2023 Teradyne Inc. Grant or award +2,530 โ€” โ€”
Feb 10, 2023 Ouster Inc. Grant or award +133,007 โ€” โ€”
Feb 10, 2023 Ouster Inc. Grant or award +186,254 โ€” โ€”

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