HUDSON TECHNOLOGIES INC

Ticker: HDSN CUSIP: 444144109 Class: Common Stock

SHEPHERD KAPLAN KROCHUK, LLC's Holding History (CIK: 0001218583)

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

Q1 2018

Shares 77,000 Value ($000) $380 Avg Close $5.89 Range $4.39 - $6.98

Q4 2017

Shares 96,000 Value ($000) $583 Avg Close $6.09 Range $5.40 - $8.02

Q3 2017

Shares 92,000 Value ($000) $719 Avg Close $8.66 Range $7.58 - $10.40

Q2 2017

Shares 115,044 Value ($000) $972 Avg Close $7.65 Range $6.32 - $8.93

Q1 2017

Shares 159,800 Value ($000) $1,055 Avg Close $7.28 Range $6.02 - $8.28

Q4 2016

Shares 159,554 Value ($000) $1,278 Avg Close $7.06 Range $5.55 - $8.50

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	77,000	$380	$5.89	$4.39 - $6.98
Q4 2017	96,000	$583	$6.09	$5.40 - $8.02
Q3 2017	92,000	$719	$8.66	$7.58 - $10.40
Q2 2017	115,044	$972	$7.65	$6.32 - $8.93
Q1 2017	159,800	$1,055	$7.28	$6.02 - $8.28
Q4 2016	159,554	$1,278	$7.06	$5.55 - $8.50