1. Corporate Officers - B
2. Benjamin Locke M.

Insider Trading History of Benjamin Locke M.

The following table details the insider trading activities (stock purchases, stock sales, and stock option exercises) by Benjamin Locke M. since 2014. The trader's CIK number is 1625781. At the time of the last reporting, Benjamin Locke M. was the Co-CEO of Tecogen Inc.. (stock ticker symbol TGEN). Also see all insider trading activities at Tecogen Inc..

Note that in the past Benjamin Locke M. also reported insider trading activities as an insider of the following companies:

Yearly summary of insider trading at Tecogen Inc. (TGEN) by Benjamin Locke M.

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2020	TGEN	2,000	$2,040	0	$0	0	$0
2017	TGEN	2,000	$5,280	0	$0	0	$0

Yearly summary of insider trading at American Dg Energy Inc (ADGE) by Benjamin Locke M.

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2015	ADGE	10,418	$4,723	0	$0	0	$0
2014	ADGE	5,000	$3,600	0	$0	0	$0

Insider trading activities at 2 companies by Benjamin Locke M.:

1. Tecogen Inc. (TGEN)

2. American Dg Energy Inc (ADGE)

Table 1. Insider trading of Tecogen Inc. (TGEN) by Benjamin Locke M.

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2020-04-21	TGEN	Buy	2,000	1.02	2,040
2017-11-14	TGEN	Buy	2,000	2.64	5,280

Table 2. Insider trading of American Dg Energy Inc (ADGE) by Benjamin Locke M.

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2015-12-09	ADGE	Buy	1,007	.50	500
2015-12-08	ADGE	Buy	610	.50	305
2015-12-03	ADGE	Buy	72	.49	35
2015-12-02	ADGE	Buy	40	.50	20
2015-11-30	ADGE	Buy	74	.50	37
2015-11-27	ADGE	Buy	97	.50	48
2015-11-20	ADGE	Buy	392	.50	196
2015-11-06	ADGE	Buy	177	.50	88
2015-11-10	ADGE	Buy	104	.50	52
2015-10-21	ADGE	Buy	533	.50	265
2015-10-19	ADGE	Buy	288	.50	144
2015-10-20	ADGE	Buy	1,354	.49	659
2015-10-13	ADGE	Buy	367	.48	177
2015-10-14	ADGE	Buy	857	.50	428
2015-10-12	ADGE	Buy	1,357	.47	631
2015-10-09	ADGE	Buy	339	.40	135
2015-10-07	ADGE	Buy	1,049	.37	388
2015-10-08	ADGE	Buy	501	.37	184
2015-10-05	ADGE	Buy	549	.36	197
2015-10-06	ADGE	Buy	651	.36	234
2014-11-21	ADGE	Buy	5,000	.72	3,600

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Benjamin Locke M. (Co-CEO of Tecogen Inc. at the time of this reporting) see the Securities and Exchange Commission (SEC) website.

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