United States Machinery, Equipment & Components

Tecogen Inc (TGEN)

Track

Over the last 90 days, Tecogen Inc. has seen a net insider buying activity totaling $124,048.5. Six insiders made purchases, with executives accounting for $52,994.0 in net buys. Notably, there were no insider sales in this period. The company's stock has experienced a significant price increase of 56.3% over the past 90 days.
Stock chart
Ticker: TGEN Exchange: NAS
Preparing chart...
Download chart Copy chart image Copy link Share to X Share


Subscribe to get access to the transaction volume chart and in-chart transaction details
• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
Ghoniem Ahmed
1 purchase — total 10,000 USD
Buy 24 Apr 2026
Value US$1,858,422.70 | Price 494.38 | Shares 76,635
Buy 13 Apr 2026
Value US$1,037,296.24 | Price 411.18 | Shares 54,073
Buy 27 Mar 2026
Value US$25,400.00 | Price 2.54 | Shares 10,000
Buy 27 Mar 2026
Value US$12,596.00 | Price 2.52 | Shares 5,000
Buy 26 Mar 2026
Value US$14,408.50 | Price 2.88 | Shares 5,000
Buy 23 Mar 2026
Value US$23,800.00 | Price 2.38 | Shares 10,000
Buy 20 Mar 2026
Value US$22,300.00 | Price 2.23 | Shares 10,000
Buy 20 Mar 2026
Value US$6,894.00 | Price 2.30 | Shares 3,000
Sale 23 Jun 2025
Value US$72,500.00 | Price 7.25 | Shares 10,000
Sale 6 Jun 2025
Value US$149,500.00 | Price 5.98 | Shares 25,000
Sale 4 Jun 2025
Value US$75,000.00 | Price 5.00 | Shares 15,000
Sale 3 Jun 2025
Value US$48,800.00 | Price 4.88 | Shares 10,000
Buy 3 Mar 2025
Value US$1,000.00 | Price 2.50 | Shares 400
Buy 22 Nov 2024
Value US$71,000.00 | Price 0.71 | Shares 100,000
Buy 27 Sep 2024
Value US$8,380.00 | Price 0.84 | Shares 10,000
Buy 25 Sep 2024
Value US$8,597.00 | Price 0.86 | Shares 10,000
Buy 19 Aug 2024
Value US$8,950.00 | Price 0.90 | Shares 10,000
Buy 15 Jul 2024
Value US$6,800.00 | Price 0.68 | Shares 10,000
Buy 15 Jul 2024
Value US$6,800.00 | Price 0.68 | Shares 10,000
Buy 10 Jul 2024
Value US$14,602.90 | Price 0.65 | Shares 22,466
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-04-27 2026-04-24 B Purchase
Ghoniem Ahmed
Non-Executive Director
76,635 +9.5%
494.38
US$1,858,423 		76,635 +9.5% 494.38 US$1,858,423
2026-04-14 2026-04-13 B Purchase
1.7
Hirsch Susan B
Non-Executive Director
54,073 -25.1%
411.18
US$1,037,296 		54,073 -25.1% 411.18 US$1,037,296
2026-03-27 2026-03-27 B Purchase
1.7
Hirsch Susan B
Non-Executive Director
39,340 -38.1%
388.79
US$4,771,680 		39,340 -38.1% 388.79 US$4,771,680
2026-03-27 2026-03-27 B Purchase
3.5
Lewis Earl
Non-Executive Director
5,000 +0.5%
2.52
US$12,596 		5,000 +0.5% 2.52 US$12,596
2026-03-27 2026-03-26 B Purchase
3.5
Lewis Earl
Non-Executive Director
5,000 +0.5%
2.88
US$14,408 		5,000 +0.5% 2.88 US$14,408
2026-03-23 2026-03-23 B Purchase
Whiting John Kimball IV

General Counsel & Secretary

Officer
10,000 +79.3%
2.38
US$23,800 		10,000 +79.3% 2.38 US$23,800
2026-03-23 2026-03-20 B Purchase
Deschenes Roger P.

CAO

Officer
10,000 +23.3%
2.23
US$22,300 		10,000 +23.3% 2.23 US$22,300
2026-03-23 2026-03-20 B Purchase
3.2
Rangesh Abinand

Chief Executive Officer

Executive Director
3,000 +4.7%
2.30
US$6,894 		3,000 +4.7% 2.30 US$6,894
2025-06-24 2025-06-23 S Sale
2.1
Lafaille Stephen

VP of Business Development

Officer
10,000 -96.2%
7.25
US$72,500 		10,000 -96.2% 7.25 US$72,500
2025-06-24 2025-06-06 S Sale
2.1
Lafaille Stephen

VP of Business Development

Officer
25,000 -98.4%
5.98
US$149,500 		25,000 -98.4% 5.98 US$149,500
2025-06-24 2025-06-04 S Sale
2.1
Lafaille Stephen

VP of Business Development

Officer
15,000 -97.4%
5.00
US$75,000 		15,000 -97.4% 5.00 US$75,000
2025-06-24 2025-06-03 S Sale
2.1
Lafaille Stephen

VP of Business Development

Officer
10,000 -96.2%
4.88
US$48,800 		10,000 -96.2% 4.88 US$48,800
2025-06-24 2025-03-03 B Purchase
2.1
Lafaille Stephen

VP of Business Development

Officer
400 +inf%
2.50
US$1,000 		400 +inf% 2.50 US$1,000
2024-12-06 2024-11-22 B Purchase
3.5
LEWIS EARL R
Non-Executive Director
100,000 +15.7%
0.71
US$71,000 		100,000 +15.7% 0.71 US$71,000
2024-09-27 2024-09-27 B Purchase
3.3
HATSOPOULOS JOHN
Non-Executive Director
10,000 +1.0%
0.84
US$8,380 		10,000 +1.0% 0.84 US$8,380
2024-09-25 2024-09-25 B Purchase
3.3
HATSOPOULOS JOHN
Non-Executive Director
10,000 +1.0%
0.86
US$8,597 		10,000 +1.0% 0.86 US$8,597
2024-08-20 2024-08-19 B Purchase
3.3
HATSOPOULOS JOHN
Non-Executive Director
10,000 +1.0%
0.90
US$8,950 		10,000 +1.0% 0.90 US$8,950
2024-07-17 2024-07-15 B Purchase
3.5
LEWIS EARL R
Non-Executive Director
10,000 +1.6%
0.68
US$6,800 		10,000 +1.6% 0.68 US$6,800
2024-07-15 2024-07-15 B Purchase
3.5
LEWIS EARL R
Non-Executive Director
10,000 +1.6%
0.68
US$6,800 		10,000 +1.6% 0.68 US$6,800
2024-07-12 2024-07-10 B Purchase
3.3
HATSOPOULOS JOHN
Non-Executive Director
22,466 +2.4%
0.65
US$14,603 		22,466 +2.4% 0.65 US$14,603
Explore more

More insider trading research around Tecogen Inc

More insider trades in United States
Similar Industrials companies with insider activity
More Industrial Goods companies with insider activity
More Machinery, Equipment & Components companies with insider activity
Insider trading in North America