Christopher Greenberg
Chairman of the Board at Birchtech Corp.
Sits on 1 board. Last updated September 28, 2026
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: Birchtech Corp., 3 years.
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
Birchtech Corp. December 30, 202494.1%
-
Birchtech Corp. December 5, 202398.2%
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 |
|---|---|---|---|---|---|
| Feb 1, 2023 | Birchtech Corp. | Option exercise | +600,000 | $0.27 | $162,000 |
| Feb 1, 2023 | Birchtech Corp. | Option exercise | +250,000 | $0.19 | $47,500 |
Questions about Christopher Greenberg
What boards is Christopher Greenberg on?
Christopher Greenberg sits on the board of Birchtech Corp.
How long has Christopher Greenberg served on boards?
Our records show at least 4 years of board service across 1 board, the earliest from 2023.
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