HUDSON TECHNOLOGIES INC

Ticker: HDSN CUSIP: 444144109 Class: Common Stock

Cascade Investment Advisors, Inc.'s Holding History (CIK: 0001681490)

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

Q1 2018

Shares 84,600 Value ($000) $417,924 Avg Close $5.89 Range $4.39 - $6.98

Q4 2017

Shares 63,575 Value ($000) $385,900 Avg Close $6.09 Range $5.40 - $8.02

Q3 2017

Shares 74,800 Value ($000) $584,188 Avg Close $8.66 Range $7.58 - $10.40

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	84,600	$417,924	$5.89	$4.39 - $6.98
Q4 2017	63,575	$385,900	$6.09	$5.40 - $8.02
Q3 2017	74,800	$584,188	$8.66	$7.58 - $10.40