HUDSON TECHNOLOGIES INC

Ticker: HDSN CUSIP: 444144109 Class: Common Stock

OPPENHEIMER ASSET MANAGEMENT INC.'s Holding History (CIK: 0001269119)

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

Q4 2017

Shares 11,572 Value ($000) $91 Avg Close $6.09 Range $5.40 - $8.02

Q3 2017

Shares 11,572 Value ($000) $91 Avg Close $8.66 Range $7.58 - $10.40

Q2 2017

Shares 4,050 Value ($000) $34 Avg Close $7.65 Range $6.32 - $8.93

Q1 2017

Shares 2,832 Value ($000) $19 Avg Close $7.28 Range $6.02 - $8.28

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2017	11,572	$91	$6.09	$5.40 - $8.02
Q3 2017	11,572	$91	$8.66	$7.58 - $10.40
Q2 2017	4,050	$34	$7.65	$6.32 - $8.93
Q1 2017	2,832	$19	$7.28	$6.02 - $8.28