TGEN · Tecogen Inc. · Insider Trading

$2.10 +0.03 (+1.45%) At close · Oct 23

Market Cap

$63.39M

30.19M

Volume · Oct 23 946.51K Avg daily vol (3M) 185.47K

Trades by corporate insiders — officers, directors and holders of more than 10% of the shares — disclosed to the SEC on Forms 4 and 5. Form 3 supplies initial ownership rather than a trade; Form 4 must be filed within two business days of the trade.

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Date	Insider	Role	Type	Security	Shares	Price	Value	After
2026-06-26	PANORA ROBERT A	COO and President	Award↑ Filing footnotes — Common Stock (Direct) Restricted stock award pursuant to Tecogen Inc. 2022 Stock Incentive Plan. Restrictions lapse 25% per year. Not applicable Corrected number of shares beneficially owned following restricted stock grant previously reported on Form 4 on June 30, 2026.	Common Stock	9,671	—	—	72,194
2026-06-26	Rangesh Abinand	Director, Chief Executive Officer	Award↑ Filing footnotes — Common Stock (Direct) Restricted stock award pursuant to Tecogen Inc. 2022 Stock Incentive Plan. Restrictions lapse 25% per year. Not applicable Corrected number of shares beneficially owned following restricted stock grant previously reported on Form 4 on June 30, 2026.	Common Stock	174,081	—	—	241,274
2026-06-26	Deschenes Roger P.	CAO	Award↑ Filing footnotes — Common Stock (Direct) Restricted Stock Award pursuant to Tecogen Inc. 2022 Stock Incentive Plan. Restrictions lapse 25% per year. Not applicable Corrected number of shares beneficially owned following restricted stock grant previously reported on June 30, 2026.	Common Stock	29,013	—	—	81,975
2026-06-26	GALITEVA ANGELINA	Director	Award↑ Filing footnotes — Stock Option (Right to Buy) (Direct) Vests 25% per year	Stock Option (Right to Buy)	25,000	$5.17	$129,250	25,000
2026-06-26	GHONIEM AHMED	Director	Award↑ Filing footnotes — Stock Option (Right to Buy) (Direct) Vests 25% per year	Stock Option (Right to Buy)	25,000	$5.17	$129,250	25,000
2026-06-26	Lafaille Stephen	VP of Business Development	Award↑ Filing footnotes — Common Stock (Direct) Restricted stock award pursuant to Tecogen Inc. 2022 Stock Incentive Plan. Restrictions lapse 25% per year. Not applicable Corrected number of shares beneficially owned following restricted stock grant previously reported on Form 4 on June 30, 2026.	Common Stock	29,013	—	—	41,389
2026-06-26	ALBERTINE JOHN M	Director	Award↑ Filing footnotes — Stock Option (Right to Buy) (Direct) Vests 25% per year	Stock Option (Right to Buy)	25,000	$5.17	$129,250	25,000
2026-06-26	Whiting John Kimball IV	General Counsel & Secretary	Award↑ Filing footnotes — Common Stock (Direct) Restricted stock award pursuant to Tecogen Inc. 2022 Stock Incentive Plan. Restrictions lapse 25% per year. Not applicable Corrected number of shares beneficially owned following restricted stock grant previously reported on June 30, 2026.	Common Stock	19,342	—	—	41,954
2026-06-26	Hirsch Susan B	Director	Award↑ Filing footnotes — Stock Option (Right to Buy) (Direct) Vests 25% per year	Stock Option (Right to Buy)	25,000	$5.17	$129,250	25,000
2026-06-26	Lewis Earl	Director	Award↑ Filing footnotes — Stock Option (Right to Buy) (Direct) Vests 25% per year	Stock Option (Right to Buy)	25,000	$5.17	$129,250	25,000
2026-04-24	GHONIEM AHMED	Director	Buy↑	Common Stock	12,723	$0.79	$10,000	12,723
2026-04-24	GHONIEM AHMED	Director	Convert↓	Stock Option (Right to Buy)	12,723	$0.79	$10,000	0
2026-04-13	Hirsch Susan B	Director	Buy↑	Common Stock	5,000	$3.73	$18,650	265,416
2026-03-27	Lewis Earl	Director	Buy↑ Filing footnotes — Common Stock (Direct) Shares acquired by trust	Common Stock	5,000	$2.52	$12,596	1,011,006
2026-03-27	Hirsch Susan B	Director	Buy↑	Common Stock	10,000	$2.54	$25,400	260,416
2026-03-26	Lewis Earl	Director	Buy↑ Filing footnotes — Common Stock (Direct) Shares acquired by a trust	Common Stock	5,000	$2.88	$14,409	1,006,006
2026-03-23	Whiting John Kimball IV	General Counsel & Secretary	Buy↑	Common Stock	10,000	$2.38	$23,800	22,612
2026-03-20	Hatsopoulos John	Director	Convert↓ Filing footnotes — Stock Option (Right to Buy) (Direct) Exercise of Stock Option Agreement dated 9/20/2023	Stock Option (Right to Buy)	50,000	$0.88	$44,000	0
2026-03-20	Deschenes Roger P.	CAO	Buy↑	Common Stock	10,000	$2.23	$22,300	52,962
2026-03-20	Rangesh Abinand	Director, Chief Executive Officer	Buy↑ Filing footnotes — Common Stock (Direct) 2,500 shares acquired by Abinand Rangesh and 500 shares acquired by daughter	Common Stock	3,000	$2.30	$6,894	67,193
2026-03-20	Hatsopoulos John	Director	Convert↑ Filing footnotes — Common Stock (Direct) Shares acquired pursuant to exercise of Stock Option Agreement dated 9/20/2023	Common Stock	50,000	$0.88	$44,000	1,038,951
2025-07-24	Deschenes Roger P.	CAO	Award↑ Filing footnotes — Common Stock (Direct) Restricted Stock Award, vests 25% per year	Common Stock	17,964	—	—	42,962
2025-07-24	Lafaille Stephen	VP of Business Development	Award↑ Filing footnotes — Stock Option (Right to Buy) (Direct) Vests 25% per year	Stock Option (Right to Buy)	24,075	$8.35	$201,026	72,937
2025-07-24	Lafaille Stephen	VP of Business Development	Award↑ Filing footnotes — Common Stock (Direct) Restricted Stock Award, vests 25% per year	Common Stock	11,976	—	—	12,376
2025-07-24	Rangesh Abinand	Director, Chief Executive Officer	Award↑ Filing footnotes — Stock Option (Right to Buy) (Direct) Vests 25% per year	Stock Option (Right to Buy)	24,075	$8.35	$201,026	294,075
2025-07-24	Deschenes Roger P.	CAO	Award↑ Filing footnotes — Stock Option (Right to Buy) (Direct) Vests 25% per year	Stock Option (Right to Buy)	12,063	$8.35	$100,726	152,063
2025-07-24	Rangesh Abinand	Director, Chief Executive Officer	Award↑ Filing footnotes — Stock Option (Right to Buy) (Direct) Vests 25% per year	Stock Option (Right to Buy)	12,048	$8.35	$100,601	306,123
2025-07-24	Whiting John Kimball IV	General Counsel & Secretary	Award↑ Filing footnotes — Stock Option (Right to Buy) (Direct) Vests 25% per year	Stock Option (Right to Buy)	24,075	$8.35	$201,026	424,075
2025-07-24	Whiting John Kimball IV	General Counsel & Secretary	Award↑ Filing footnotes — Common Stock (Direct) Restricted Stock Award, vests 25% per year	Common Stock	11,976	—	—	12,612
2025-07-24	GALITEVA ANGELINA	Director	Award↑ Filing footnotes — Stock Option (Right to Buy) (Direct) Vests 25% per year	Stock Option (Right to Buy)	25,000	$8.35	$208,750	225,000
2025-07-24	ALBERTINE JOHN M	Director	Award↑ Filing footnotes — Stock Option (Right to Buy) (Direct) Vests 25% per year	Stock Option (Right to Buy)	25,000	$8.35	$208,750	175,000
2025-07-24	Hirsch Susan B	Director	Award↑ Filing footnotes — Stock Option (Right to Buy) (Direct) Vests 25% per year	Stock Option (Right to Buy)	25,000	$8.35	$208,750	150,000
2025-07-24	Rangesh Abinand	Director, Chief Executive Officer	Award↑ Filing footnotes — Common Stock (Direct) Restricted Stock Award, vests 25% per year	Common Stock	53,892	—	—	64,193
2025-07-24	Lewis Earl	Director	Award↑ Filing footnotes — Stock Option (Right to Buy) (Direct) Vests 25% per year	Stock Option (Right to Buy)	25,000	$8.35	$208,750	91,250
2025-07-24	GHONIEM AHMED	Director	Award↑ Filing footnotes — Stock Option (Right to Buy) (Direct) Vests 25% per year	Stock Option (Right to Buy)	25,000	$8.35	$208,750	237,723
2025-06-24	PANORA ROBERT A	COO and President	Sell↓ Filing footnotes — Common Stock (Direct) Share sales effected to cover tax liabilities and other obligations. The June 2025 share sales were reported to the company on July 11, 2025.	Common Stock	900	$6.86	$6,174	62,523
2025-06-23	Lafaille Stephen	VP of Business Development	Exercise↑ Filing footnotes — Common Stock (Direct) Shares acquired pursuant to stock option agreement dated 1/21/2022	Common Stock	10,000	$1.10	$11,000	10,400
2025-06-23	Lafaille Stephen	VP of Business Development	Exercise↓ Filing footnotes — Stock Options (Right to Buy) (Direct) Vests 50% per year	Stock Options (Right to Buy)	10,000	$1.10	$11,000	17,500
2025-06-23	Lafaille Stephen	VP of Business Development	Sell↓	Common Stock	10,000	$7.25	$72,500	400
2025-06-23	PANORA ROBERT A	COO and President	Sell↓ Filing footnotes — Common Stock (Direct) Share sales effected to cover tax liabilities and other obligations. The June 2025 share sales were reported to the company on July 11, 2025.	Common Stock	31,800	$6.36	$202,248	63,423
2025-06-18	PANORA ROBERT A	COO and President	Sell↓ Filing footnotes — Common Stock (Direct) Share sales effected to cover tax liabilities and other obligations. The June 2025 share sales were reported to the company on July 11, 2025.	Common Stock	13,000	$5.03	$65,390	95,223
2025-06-16	PANORA ROBERT A	COO and President	Convert↓ Filing footnotes — Stock Option (Right to Buy) (Direct) Transaction code corrected 100,000 shares of the 200,000 option shares granted pursuant to Stock Option Agreement dated 7/9/2020 vested on 6/30/2022 upon achievement of Adjusted EBITDA performance milestone.	Stock Option (Right to Buy)	30,000	$0.71	$21,300	100,000
2025-06-16	PANORA ROBERT A	COO and President	Convert↑ Filing footnotes — Common Stock (Direct) Transaction code corrected	Common Stock	12,723	$0.79	$10,000	25,723
2025-06-16	PANORA ROBERT A	COO and President	Convert↑ Filing footnotes — Common Stock (Direct) Transaction code corrected	Common Stock	30,000	$0.71	$21,300	55,723
2025-06-16	PANORA ROBERT A	COO and President	Convert↓ Filing footnotes — Stock Option (Right to Buy) (Direct) Transaction code corrected	Stock Option (Right to Buy)	52,500	$1.10	$57,750	0
2025-06-16	PANORA ROBERT A	COO and President	Convert↑ Filing footnotes — Common Stock (Direct) Transaction code corrected	Common Stock	52,500	$1.10	$57,750	108,223
2025-06-16	PANORA ROBERT A	COO and President	Convert↓ Filing footnotes — Stock Option (Right to Buy) (Direct) Transaction code corrected	Stock Option (Right to Buy)	12,723	$0.79	$10,000	0
2025-06-06	Lafaille Stephen	VP of Business Development	Exercise↓ Filing footnotes — Stock Options (Right to Buy) (Direct) Vests 50% per year	Stock Options (Right to Buy)	25,000	$1.10	$27,500	27,500
2025-06-06	Lafaille Stephen	VP of Business Development	Sell↓ Filing footnotes — Common Stock (Direct) Multiple share sales between $5.85 and $6.10	Common Stock	25,000	$5.98	$149,500	400
2025-06-06	Lafaille Stephen	VP of Business Development	Exercise↑ Filing footnotes — Common Stock (Direct) Shares acquired pursuant to stock option agreement dated 1/21/2022	Common Stock	25,000	$1.10	$27,500	25,400

Legend Buy — open-market purchase Sell — open-market sale ↑ Shares acquired ↓ Shares disposed (gift, conversion, tax…)

Showing 1–50 of 273 transactions

Key facts CIK 1537435 CUSIP 87876P201 13F (30d) 4 filings 4 filers Visit website Investor relations