HUDSON TECHNOLOGIES INC

Ticker: HDSN CUSIP: 444144109 Class: Common Stock

Parallax Volatility Advisers, L.P.'s Holding History (CIK: 0001521001)

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

Q3 2018

Shares 44,820 Value ($000) $57 Avg Close $1.77 Range $1.22 - $2.39

Q2 2018

Shares 127,670 Value ($000) $257 Avg Close $3.24 Range $1.93 - $4.97

Q4 2017

Shares 16,289 Value ($000) $99 Avg Close $6.09 Range $5.40 - $8.02

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2018	44,820	$57	$1.77	$1.22 - $2.39
Q2 2018	127,670	$257	$3.24	$1.93 - $4.97
Q4 2017	16,289	$99	$6.09	$5.40 - $8.02