Tecogen TGEN Insider Ownership

NYSE TGEN
$3.09 -0.14 (-4.25%)
As of: Sep 9, 2026 · 3:59 PM EDT

Insider Holdings by Owner

2.81Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026
Insider Ownership
11.94%
0% pp QoQ
Shares Held by Insiders
3.44Mn
filed for Sep 2026
0.00% QoQ
Shares Outstanding
28.82Mn
28,817,040 shares
Direct Holdings
2.81Mn
Indirect: 635.00K
Net Shares Traded (QoQ)
0
no net change in Sep 2026
Insiders Holding Shares
9
with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding
Latest
Average ownership
Peak ownership

Shares Purchased/Sold by Insiders

Bought Sold
Latest quarter
Net over range
Buying quarters

Insider Ownership Summary

Quarter ending 30 Sep, 2026

Tecogen's three largest insider shareholders as of September 09, 2026 are John Hatsopoulos (Co Chief Executive Officer, 1.04Mn shares), Earl Lewis (Director, 1.01Mn shares), Earl R Lewis (Director, 635.00K shares).

Form 4 Holdings

Insiders Holding TGEN

Insiders 9
Shares held 2.81Mn
Of outstanding 9.74%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 John Hatsopoulos Co Chief Executive Officer 1,038,951 0 1,038,951 37.0% 23 Mar, 2026
2 Earl Lewis Director 1,011,006 0 1,011,006 36.0% 27 Mar, 2026
3 Susan B Hirsch Director 265,416 0 265,416 9.5% 14 Apr, 2026
4 Abinand Rangesh Chief Executive Officer 241,274 0 241,274 8.6% 08 Sep, 2026
5 Roger P. Deschenes Chief Financial Officer 81,975 0 81,975 2.9% 08 Sep, 2026
6 Robert Panora Coo And President 72,194 0 72,194 2.6% 08 Sep, 2026
7 John Kimball Iv Whiting General Counsel Secretary 41,954 0 41,954 1.5% 08 Sep, 2026
8 Stephen Lafaille Vp Of Business Development 41,389 0 41,389 1.5% 08 Sep, 2026
9 Ahmed Ghoniem Director 12,723 0 12,723 0.5% 27 Apr, 2026

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

293 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
26 Jun, 2026 Robert Panora Coo And President Acquired A 9,671 $0.00 $0 72,194 Direct
26 Jun, 2026 John Kimball Iv Whiting General Counsel Secretary Acquired A 19,342 $0.00 $0 41,954 Direct
26 Jun, 2026 Abinand Rangesh Chief Executive Officer Acquired A 174,081 $0.00 $0 241,274 Direct
26 Jun, 2026 Roger P. Deschenes Chief Financial Officer Acquired A 29,013 $0.00 $0 81,975 Direct
26 Jun, 2026 Stephen Lafaille Vp Of Business Development Acquired A 29,013 $0.00 $0 41,389 Direct
26 Jun, 2026 Robert Panora Coo And President Acquired A 9,671 9,671 Direct
26 Jun, 2026 John M Albertine Director Acquired A 25,000 $5.17 $129.25K 25,000 Direct
26 Jun, 2026 Susan B Hirsch Director Acquired A 25,000 $5.17 $129.25K 25,000 Direct
26 Jun, 2026 Earl Lewis Director Acquired A 25,000 $5.17 $129.25K 25,000 Direct
26 Jun, 2026 Stephen Lafaille Vp Of Business Development Acquired A 29,013 29,013 Direct
26 Jun, 2026 Roger P. Deschenes Cao Acquired A 29,013 29,013 Direct
26 Jun, 2026 Abinand Rangesh Chief Executive Officer Acquired A 174,081 174,081 Direct
26 Jun, 2026 John Kimball Iv Whiting General Counsel Secretary Acquired A 19,342 19,342 Direct
26 Jun, 2026 Angelina Galiteva Director Acquired A 25,000 $5.17 $129.25K 25,000 Direct
26 Jun, 2026 Ahmed Ghoniem Director Acquired A 25,000 $5.17 $129.25K 25,000 Direct
26 Jun, 2026 Abinand Rangesh Chief Executive Officer Acquired A 26,041 $5.17 $134.63K 26,041 Direct
26 Jun, 2026 Robert Panora Coo And President Acquired A 26,041 $5.17 $134.63K 26,041 Direct
24 Apr, 2026 Ahmed Ghoniem Director Acquired P 12,723 $0.79 $10.00K 12,723 Direct
24 Apr, 2026 Ahmed Ghoniem Director Disposed M 12,723 $0.79 $10.00K 0 Direct
13 Apr, 2026 Susan B Hirsch Director Acquired P 5,000 $3.73 $18.65K 265,416 Direct