Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 4 years
- Director since
- 2023
4 years of board service in total across 1 board, counting each seat separately. Longest: Tecogen Inc., 3 years.
Tecogen Inc.
Director
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
Tecogen Inc. June 5, 202698.4%
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Tecogen Inc. June 10, 202598.5%
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Tecogen Inc. June 6, 202495.7%
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Tecogen Inc. June 8, 202398.4%
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 20, 2026 | Tecogen Inc. | Option exercise | +50,000 | $0.88 | $44,000 |
| Sep 27, 2024 | Tecogen Inc. | Open-market purchase | +10,000 | $0.84 | $8,400 |
| Sep 25, 2024 | Tecogen Inc. | Open-market purchase | +10,000 | $0.86 | $8,600 |
| Aug 19, 2024 | Tecogen Inc. | Open-market purchase | +10,000 | $0.90 | $9,000 |
| Jul 10, 2024 | Tecogen Inc. | Open-market purchase | +22,466 | $0.65 | $14,603 |
| May 29, 2024 | Tecogen Inc. | Open-market purchase | +10,000 | $0.80 | $8,000 |
| May 28, 2024 | Tecogen Inc. | Open-market purchase | +1,265 | $0.80 | $1,012 |
| May 24, 2024 | Tecogen Inc. | Open-market purchase | +8,735 | $0.80 | $6,988 |
| May 22, 2024 | Tecogen Inc. | Open-market purchase | +3,200 | $0.79 | $2,528 |
| May 21, 2024 | Tecogen Inc. | Open-market purchase | +13,800 | $0.79 | $10,902 |
| May 16, 2024 | Tecogen Inc. | Open-market purchase | +3,000 | $0.75 | $2,250 |
| May 15, 2024 | Tecogen Inc. | Open-market purchase | +10,000 | $0.74 | $7,400 |
| Apr 24, 2024 | Tecogen Inc. | Open-market purchase | +5,000 | $0.67 | $3,350 |
| Apr 23, 2024 | Tecogen Inc. | Open-market purchase | +5,000 | $0.69 | $3,450 |
| Apr 23, 2024 | Tecogen Inc. | Open-market purchase | +1,000 | $0.68 | $680 |
Questions about John Hatsopoulos
What boards is John Hatsopoulos on?
John Hatsopoulos sits on the board of Tecogen Inc.
How long has John Hatsopoulos served on boards?
Our records show at least 4 years of board service across 1 board, the earliest from 2023.
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