ENERGY RECOVERY INC

Ticker: ERII CUSIP: 29270J100 Class: Common Stock

PERRITT CAPITAL MANAGEMENT INC's Holding History (CIK: 0001279342)

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

Q3 2018

Shares 50,000 Value ($000) $448 Avg Close $8.85 Range $7.68 - $10.25

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2018	50,000	$448	$8.85	$7.68 - $10.25