ENERGY RECOVERY INC

Ticker: ERII CUSIP: 29270J100 Class: Common Stock

ADAGE CAPITAL PARTNERS GP, L.L.C.'s Holding History (CIK: 0001165408)

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

Q4 2023

Shares 42,491 Value ($000) $801 Avg Close $18.57 Range $14.04 - $21.32

Q3 2023

Shares 14,407 Value ($000) $306 Avg Close $26.69 Range $20.50 - $30.76

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2023	42,491	$801	$18.57	$14.04 - $21.32
Q3 2023	14,407	$306	$26.69	$20.50 - $30.76