1. Corporate Officers - P
2. Prouty Eric A

Insider Trading History of Prouty Eric A

The following table details the insider trading activities (stock purchases, stock sales, and stock option exercises) of Prouty Eric A since 2017. This trader's CIK number is 1620724. At the time of last reporting, Prouty Eric A was the Director of Hudson Technologies Inc /ny. (stock ticker symbol HDSN). Also see all insider trading activities at Hudson Technologies Inc /ny.

Note that in the past Prouty Eric A also reported insider trading activities as an insider of the following companies:

Yearly summary of insider trading at Aqua Metals, Inc. (AQMS) by Prouty Eric A

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2019	AQMS	5,000	$9,500	0	$0	0	$0
2018	AQMS	5,000	$14,250	0	$0	0	$0

Yearly summary of insider trading at Hudson Technologies Inc /ny (HDSN) by Prouty Eric A

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2025	HDSN	0	$0	0	$0	4,744	$34,868
2023	HDSN	0	$0	20,000	$191,200	43,478	$42,608
2022	HDSN	0	$0	75,000	$675,000	80,000	$49,600
2021	HDSN	0	$0	0	$0	60,645	$78,223
2019	HDSN	5,000	$9,450	0	$0	0	$0
2018	HDSN	15,000	$28,900	0	$0	0	$0
2017	HDSN	0	$0	0	$0	26,600	$85,918

Insider trading activities at 2 companies by Prouty Eric A:

1. Aqua Metals, Inc. (AQMS)

2. Hudson Technologies Inc /ny (HDSN)

Table 1. Insider trading of Aqua Metals, Inc. (AQMS) by Prouty Eric A

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2019-01-17	AQMS	Buy	5,000	1.90	9,500
2018-06-18	AQMS	Buy	5,000	2.85	14,250

Table 2. Insider trading of Hudson Technologies Inc /ny (HDSN) by Prouty Eric A

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2025-07-31	HDSN	Option Ex	4,744	7.35	34,868
2023-06-14	HDSN	Sale	20,000	9.56	191,200
2023-06-02	HDSN	Option Ex	43,478	.98	42,608
2022-05-09	HDSN	Sale	75,000	9.00	675,000
2022-05-06	HDSN	Option Ex	80,000	.62	49,600
2021-08-30	HDSN	Option Ex	42,553	1.09	46,382
2021-06-02	HDSN	Option Ex	18,092	1.76	31,841
2019-05-08	HDSN	Buy	5,000	1.89	9,450
2018-12-12	HDSN	Buy	5,000	1.64	8,200
2018-08-15	HDSN	Buy	5,000	1.81	9,050
2018-05-24	HDSN	Buy	5,000	2.33	11,650
2017-08-21	HDSN	Option Ex	26,600	3.23	85,918

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 Prouty Eric A (Director of Hudson Technologies Inc /ny at the time of this reporting) see the Securities and Exchange Commission (SEC) website.

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