HUDSON TECHNOLOGIES INC

Ticker: HDSN CUSIP: 444144109 Class: Common Stock

Ancora Advisors LLC's Holding History (CIK: 0001446114)

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

Q1 2018

Shares 20,122 Value ($000) $99 Avg Close $5.89 Range $4.39 - $6.98

Q4 2017

Shares 15,271 Value ($000) $93 Avg Close $6.09 Range $5.40 - $8.02

Q4 2016

Shares 2,130 Value ($000) $17 Avg Close $7.06 Range $5.55 - $8.50

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	20,122	$99	$5.89	$4.39 - $6.98
Q4 2017	15,271	$93	$6.09	$5.40 - $8.02
Q4 2016	2,130	$17	$7.06	$5.55 - $8.50