HUDSON TECHNOLOGIES INC

Ticker: HDSN CUSIP: 444144109 Class: Common Stock

Horizon Investment Services, LLC's Holding History (CIK: 0001426940)

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

Q3 2017

Shares 56,305 Value ($000) $440 Avg Close $8.66 Range $7.58 - $10.40

Q2 2017

Shares 52,390 Value ($000) $443 Avg Close $7.65 Range $6.32 - $8.93

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2017	56,305	$440	$8.66	$7.58 - $10.40
Q2 2017	52,390	$443	$7.65	$6.32 - $8.93