Hirsch Susan B

3.7

3.7

• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings

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Tecogen Inc (TGEN)

Transaction date 13 Apr 2026

Purchase

Price

411.18

Quantity 54,073 -25.1%

Value US$1,037,296

Tecogen Inc (TGEN)

Transaction date 27 Mar 2026

Purchase

Price

388.79

Quantity 39,340 -38.1%

Value US$4,771,680

Tecogen Inc (TGEN)

Transaction date 19 Oct 2023

Purchase

Price

63.31

Quantity 56,263 -7.9%

Value US$3,713,744

Notification date	Transaction date	Company	B/S Transaction type	Nb. shares Price Value	Number of shares	Price	Value
2026-04-14	2026-04-13	Tecogen Inc (TGEN)	B Purchase	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	Tecogen Inc (TGEN)	B Purchase	39,340 -38.1% 388.79 US$4,771,680	39,340 -38.1%	388.79	US$4,771,680
2023-10-20	2023-10-19	Tecogen Inc (TGEN)	B Purchase	56,263 -7.9% 63.31 US$3,713,744	56,263 -7.9%	63.31	US$3,713,744