TECOGEN INC. (TGEN)
Data as of , from SEC Form 4 filings.
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About TECOGEN INC. (TGEN)
TECOGEN INC. files with the SEC under CIK 0001537435 and is classified as air-cond and warm air heatg equip and comm and indl refrig equip. It is grouped with Industrials companies on this site. It filed a registration statement with the SEC on 31 August 2026 and has not yet priced an offering.
TGEN Form 4 activity by transaction type, last 90 days
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Grant or award | 5 | 261,120 |
Dollar totals cover purchases and sales only (codes P and S). Grants, option exercises, gifts and tax withholding are counted in shares, because none of them is a trade at a market price.
TGEN insider transactions (Form 4)
3937 Form 4 filings on record, the earliest from Dec 6, 2024, newest first. Filing history page 1 of 2.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Stephen Lafaille - Officer | Grant or award | Common Stock | 29,013 | $0.00 footnote F2 | - | |
| ||||||
 John Kimball Whiting IV - Officer | Grant or award | Common Stock | 19,342 | $0.00 footnote F2 | - | |
| ||||||
| Robert A. Panora - Officer | Grant or award | Common Stock | 9,671 | $0.00 footnote F2 | - | |
| ||||||
| Roger P. Deschenes - Officer | Grant or award | Common Stock | 29,013 | $0.00 footnote F2 | - | |
| ||||||
| Abinand Rangesh - Officer | Grant or award | Common Stock | 174,081 | $0.00 footnote F2 | - | |
| ||||||
| John Kimball Whiting IV - Officer | Grant or award | Common Stock | 19,342 | - footnote F1 | - | |
| ||||||
| Stephen Lafaille - Officer | Grant or award | Common Stock | 29,013 | - footnote F1 | - | |
| ||||||
| Roger P. Deschenes - Officer | Grant or award | Common Stock | 29,013 | - footnote F1 | - | |
| ||||||
| Robert A. Panora - Officer | Grant or award | Common Stock | 9,671 | - footnote F1 | - | |
| Robert A. Panora - Officer | Grant or award | Stock Option (Right to Buy) | 26,041 | $5.17 | $135K | |
| ||||||
| Abinand Rangesh - Officer | Grant or award | Common Stock | 174,081 | - footnote F1 | - | |
| Abinand Rangesh - Officer | Grant or award | Stock Option (Right to Buy) | 26,041 | $5.17 | $135K | |
| ||||||
| Susan B. Hirsch - Director | Grant or award | Stock Option (Right to Buy) | 25,000 | $5.17 | $129K | |
| John M. Albertine - Director | Grant or award | Stock Option (Right to Buy) | 25,000 | $5.17 | $129K | |
| Earl R. Lewis - Director | Grant or award | Stock Option (Right to Buy) | 25,000 | $5.17 | $129K | |
| Ahmed Ghoniem - Director | Grant or award | Stock Option (Right to Buy) | 25,000 | $5.17 | $129K | |
| Angelina Galiteva - Director | Grant or award | Stock Option (Right to Buy) | 25,000 | $5.17 | $129K | |
| Ahmed Ghoniem - Director | Open-market purchase | Common Stock | 12,723 | $0.79 | $10K | |
| Ahmed Ghoniem - Director | Option exercise | Stock Option (Right to Buy) | 12,723 | $0.79 | $10K | |
| Susan B. Hirsch - Director | Open-market purchase | Common Stock | 5,000 | $3.73 | $19K | |
| Susan B. Hirsch - Director | Open-market purchase | Common Stock | 10,000 | $2.54 | $25K | |
| Earl R. Lewis - Director | Open-market purchase | Common Stock | 5,000 footnote F1 | $2.88 | $14K | |
| ||||||
| John Kimball Whiting IV - Officer | Open-market purchase | Common Stock | 10,000 | $2.38 | $24K | |
| Roger P. Deschenes - Officer | Open-market purchase | Common Stock | 10,000 | $2.23 | $22K | |
| Abinand Rangesh - Officer | Open-market purchase | Common Stock | 3,000 footnote F1 | $2.30 | $7K | |
| ||||||
| John Hatsopoulos - Director | Option exercise | Common Stock | 50,000 footnote F1 | $0.88 | $44K | |
| John Hatsopoulos - Director | Option exercise | Stock Option (Right to Buy) | 50,000 footnote F2 | $0.88 | $44K | |
| ||||||
| Stephen Lafaille - Officer | Grant or award | Common Stock | 11,976 | $0.00 | - | |
| Stephen Lafaille - Officer | Grant or award | Stock Option (Right to Buy) | 24,075 | $8.35 | $201K | |
| John Kimball Whiting IV - Officer | Grant or award | Common Stock | 11,976 | $0.00 | - | |
| John Kimball Whiting IV - Officer | Grant or award | Stock Option (Right to Buy) | 24,075 | $8.35 | $201K | |
| Abinand Rangesh - Officer | Grant or award | Common Stock | 53,892 | $0.00 | - | |
| Abinand Rangesh - Officer | Grant or award | Stock Option (Right to Buy) | 24,075 | $8.35 | $201K | |
| Abinand Rangesh - Officer | Grant or award | Stock Option (Right to Buy) | 12,048 | $8.35 | $101K | |
| Susan B. Hirsch - Director | Grant or award | Stock Option (Right to Buy) | 25,000 | $8.35 | $209K | |
| Ahmed Ghoniem - Director | Grant or award | Stock Option (Right to Buy) | 25,000 | $8.35 | $209K | |
| Angelina Galiteva - Director | Grant or award | Stock Option (Right to Buy) | 25,000 | $8.35 | $209K | |
| Roger P. Deschenes - Officer | Grant or award | Common Stock | 17,964 | $0.00 | - | |
| Roger P. Deschenes - Officer | Grant or award | Stock Option (Right to Buy) | 12,063 | $8.35 | $101K | |
TGEN insider trading FAQ
What is the latest insider trade for TGEN?
TECOGEN INC. (TGEN) had 5 insider filings in the last 90 days, with the most recent on 2026-09-08. The full record for TGEN runs to 37 Form 4 filings, the earliest from 2024-12-06. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying TGEN stock?
No insider purchases of TGEN were filed in the last 90 days. 8 purchases are on record for this company.
How many insiders are selling TGEN stock?
No insider sales of TGEN were filed in the last 90 days. 5 sales are on record for this company.
Where can I see TGEN SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects TGEN Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Industrials companies with insider activity
Recent insider filings
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - Stephen Lafaille view on EDGAR
- - John Kimball Whiting IV view on EDGAR
- - Robert A. Panora view on EDGAR
- - Roger P. Deschenes view on EDGAR
- - Abinand Rangesh view on EDGAR
- - John Kimball Whiting IV view on EDGAR
- - Stephen Lafaille view on EDGAR
- - Roger P. Deschenes view on EDGAR
- - Robert A. Panora view on EDGAR
Related companies with recent insider activity
Learn more
- What the Form 4 transaction codes mean
- Grants, option exercises, gifts and tax withholding are not trades on the market. The codes say which is which.
- Insider activity in Industrials
- Where TGEN's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
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- Every TGEN Form 4 filing on record
- Up to 3 months of TGEN price history
- The daily trading plan of ranked insider buys, on a delay, with the plan archive
