Time on boards
- Boards served
- 2
- Current seats
- 2
- Board service
- 5 years
- Director since
- 2023
5 years of board service in total across 2 boards, counting each seat separately. Longest: Acorn Energy 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.
-
Acorn Energy Inc. September 16, 202695.6%
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Acorn Energy Inc. September 17, 202496.9%
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 |
|---|---|---|---|---|---|
| Mar 4, 2026 | Greenland Mines Ltd. | Grant or award | +350,000 | — | — |
| Feb 5, 2026 | Acorn Energy Inc. | Option exercise | +625 | $4.96 | $3,100 |
| Aug 5, 2025 | Greenland Mines Ltd. | Grant or award | +153,494 | — | — |
| Nov 22, 2024 | Acorn Energy Inc. | Option exercise | +625 | $3.68 | $2,300 |
| Jan 1, 2024 | Acorn Energy Inc. | Option exercise | +625 | $2.88 | $1,800 |
| Jan 1, 2024 | Acorn Energy Inc. | Shares withheld for tax | −296 | $6.09 | $1,803 |
Questions about Samuel M. Zentman
What boards is Samuel M. Zentman on?
Samuel M. Zentman sits on the boards of Acorn Energy Inc. and Greenland Mines Ltd.
How long has Samuel M. Zentman served on boards?
Our records show at least 5 years of board service across 2 boards, the earliest from 2023.
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