InsiderClue
← All stocks

TECOGEN INC.

TGEN Net buying
CIK 0001537435 #4338 in the set updated 20 Sep 2026
Bought (12 mo)
$134.05K
out of their own pocket, the only kind of buying there is
Sold (12 mo)
$0.00
$0.00 on a plan · $0.00 straight out of an exercise
Sold at will
$0.00
0 of 0 sales
Net
+$134.05K
+$134.05K against sales at will

By person

9 insiders · 9 transactions
0.6×

Abinand Rangesh holds only 0.6 times base salary in stock. $136.83K of shares against $210.00K in salary for 2025.

Salary from the company's own proxy. The shares are what Abinand Rangesh last reported holding, valued at $0.79, the price Common Stock was last bought or sold at on the open market here, on 24 Apr 2026.

Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
Hirsch Susan B
Director
$44.05K (2)
—
+$44.05K
265,416
0.8792%
$208.62K
+6.0%
Lewis Earl
Director
$27.00K (2)
—
+$27.00K
1,011,006
3.35%
$794.65K
+61.2%
Whiting John Kimball IV
General Counsel & Secretary
$23.80K (1)
—
+$23.80K
19,342
0.0641%
$15.20K
—
Deschenes Roger P.
CAO
$22.30K (1)
—
+$22.30K
29,013
0.0961%
$22.80K
—
Ghoniem Ahmed
Director
$10.00K (1)
—
+$10.00K
12,723
0.0421%
$10.00K
—
Rangesh Abinand
Chief Executive Officer
$6.89K (1)
—
+$6.89K
174,081
0.5767%
$136.83K
—
Hatsopoulos John
Director
—
—
—
1,038,951
3.44%
$816.62K
+7.2%
Lafaille Stephen
VP of Business Development
—
—
—
29,013
0.0961%
$22.80K
—
Panora Robert
COO and President
—
—
—
9,671
0.0320%
$7.60K
—

Individual transactions

9
Insider
Date
Role
Action
Shares
Price
Amount
Ghoniem Ahmed
24 Apr 2026
Director
Buy
12,723
$0.79
$10.00K
Hirsch Susan B
13 Apr 2026
Director
Buy
5,000
$3.73
$18.65K
Lewis Earl
27 Mar 2026
Director
Buy
5,000
$2.52
$12.60K
Hirsch Susan B
27 Mar 2026
Director
Buy
10,000
$2.54
$25.40K
Lewis Earl
26 Mar 2026
Director
Buy
5,000
$2.88
$14.41K
Whiting John Kimball IV
23 Mar 2026
General Counsel & Secretary
Buy
10,000
$2.38
$23.80K
Hatsopoulos John
20 Mar 2026
Director
Exercised, kept
50,000
$0.88
$44.00K
Rangesh Abinand
20 Mar 2026
Chief Executive Officer
Buy
3,000
$2.30
$6.89K
Deschenes Roger P.
20 Mar 2026
CAO
Buy
10,000
$2.23
$22.30K

What was left out

Form 4 filings counted 19
Amendments (4/A) skipped 5
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 0
Sales at will 0
Transactions with no price 0
Shares from compensation/vesting 311,120
History held since 14 Dec 2016