ENERGY RECOVERY INC

Ticker: ERII CUSIP: 29270J100 Class: Common Stock

WOLVERINE ASSET MANAGEMENT LLC's Holding History (CIK: 0001279891)

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

Q1 2017

Shares 49,900 Value ($000) $415 Avg Close $9.28 Range $7.11 - $11.46

Q4 2016

Shares 38,733 Value ($000) $400 Avg Close $12.01 Range $8.53 - $16.30

Q2 2014

Shares 8,600 Value ($000) $42 Avg Close $5.16 Range $4.10 - $6.18

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2017	49,900	$415	$9.28	$7.11 - $11.46
Q4 2016	38,733	$400	$12.01	$8.53 - $16.30
Q2 2014	8,600	$42	$5.16	$4.10 - $6.18