HUDSON TECHNOLOGIES INC

Ticker: HDSN CUSIP: 444144109 Class: Common Stock

Caprock Group, LLC's Holding History (CIK: 0001610769)

Note: Option positions (PUT/CALL) are excluded.

Q1 2018

Shares 37,919 Value ($000) $187 Avg Close $5.89 Range $4.39 - $6.98

Q4 2017

Shares 22,784 Value ($000) $145 Avg Close $6.09 Range $5.40 - $8.02

Q3 2017

Shares 23,177 Value ($000) $181 Avg Close $8.66 Range $7.58 - $10.40

Q2 2017

Shares 26,165 Value ($000) $221 Avg Close $7.65 Range $6.32 - $8.93

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	37,919	$187	$5.89	$4.39 - $6.98
Q4 2017	22,784	$145	$6.09	$5.40 - $8.02
Q3 2017	23,177	$181	$8.66	$7.58 - $10.40
Q2 2017	26,165	$221	$7.65	$6.32 - $8.93