ENERGY RECOVERY INC

Ticker: ERII CUSIP: 29270J100 Class: Common Stock

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's Holding History (CIK: 0001164508)

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

Q4 2025
Shares 348,187 Value ($000) $4,697 Avg Close $15.16 Range $13.27 - $18.32
Q3 2025
Shares 223,845 Value ($000) $3,452 Avg Close $14.10 Range $12.54 - $15.47
Q2 2025
Shares 139,323 Value ($000) $1,781 Avg Close $13.55 Range $10.86 - $16.05
Q1 2025
Shares 136,448 Value ($000) $2,168 Avg Close $15.21 Range $13.80 - $16.86
Q4 2021
Shares 63,364 Value ($000) $1,362 Avg Close $20.92 Range $18.50 - $24.99
Q3 2021
Shares 123,333 Value ($000) $2,347 Avg Close $20.30 Range $17.94 - $23.69
Q2 2021
Shares 44,583 Value ($000) $1,016 Avg Close $19.71 Range $16.40 - $22.81
Q1 2021
Shares 305,059 Value ($000) $5,595 Avg Close $16.01 Range $13.45 - $20.25
Q4 2020
Shares 307,547 Value ($000) $4,195 Avg Close $10.67 Range $8.12 - $13.98
Q3 2020
Shares 223,066 Value ($000) $1,829 Avg Close $8.02 Range $6.69 - $9.18
Q2 2020
Shares 306,378 Value ($000) $2,327 Avg Close $7.92 Range $6.66 - $9.31
Q1 2020
Shares 122,900 Value ($000) $914 Avg Close $9.48 Range $6.11 - $11.07
Q3 2019
Shares 35,424 Value ($000) $328 Avg Close $10.08 Range $8.61 - $12.04