Time on boards
- Boards served
- 4
- Current seats
- 4
- Board service
- 15 years
- Director since
- 2023
15 years of board service in total across 4 boards, counting each seat separately. Longest: Avnet Inc., 3 years.
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
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Ultra Clean Holdings Inc. May 22, 202699.5%
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Teradyne Inc. May 8, 202698.9%
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Ouster Inc. June 18, 202563.6%
-
Ultra Clean Holdings Inc. May 21, 202566.7%
-
Teradyne Inc. May 9, 202598.0%
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Ultra Clean Holdings Inc. May 22, 202496.7%
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Teradyne Inc. May 9, 202499.1%
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Teradyne Inc. May 12, 202398.3%
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 |
|---|---|---|---|---|---|
| Sep 25, 2026 | Teradyne Inc. | Other | +2 | — | — |
| Jun 17, 2026 | Ouster Inc. | Grant or award | +4,725 | — | — |
| Jun 12, 2026 | Teradyne Inc. | Other | +2 | — | — |
| May 22, 2026 | Ultra Clean Holdings Inc. | Grant or award | +2,575 | — | — |
| May 8, 2026 | Teradyne Inc. | Grant or award | +668 | — | — |
| Mar 13, 2026 | Teradyne Inc. | Other | +2 | — | — |
| Dec 17, 2025 | Teradyne Inc. | Other | +2 | — | — |
| Sep 29, 2025 | Teradyne Inc. | Other | +3 | — | — |
| Jun 18, 2025 | Ouster Inc. | Grant or award | +13,558 | — | — |
| Jun 18, 2025 | Ouster Inc. | Grant or award | +1,500 | — | — |
| Jun 13, 2025 | Teradyne Inc. | Other | +6 | — | — |
| May 21, 2025 | Ultra Clean Holdings Inc. | Grant or award | +8,198 | — | — |
| May 9, 2025 | Teradyne Inc. | Grant or award | +2,971 | — | — |
| Mar 14, 2025 | Teradyne Inc. | Other | +3 | — | — |
| Mar 7, 2025 | Ultra Clean Holdings Inc. | Open-market purchase | +10,000 | $24.29 | $242,900 |
Questions about Ernest E. Maddock
What boards is Ernest E. Maddock on?
Ernest E. Maddock sits on the boards of Avnet Inc., Ouster Inc., Teradyne Inc. and Ultra Clean Holdings Inc.
How long has Ernest E. Maddock served on boards?
Our records show at least 15 years of board service across 4 boards, the earliest from 2023.
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