ENERGY RECOVERY INC

Ticker: ERII CUSIP: 29270J100 Class: Common Stock

NEW YORK STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0000314969)

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

Q1 2017
Shares 2,900 Value ($000) $24 Avg Close $9.28 Range $7.11 - $11.46
Q4 2016
Shares 2,900 Value ($000) $30 Avg Close $12.01 Range $8.53 - $16.30
Q3 2016
Shares 3,000 Value ($000) $48 Avg Close $12.16 Range $8.35 - $16.67