ENERGY RECOVERY INC

Ticker: ERII CUSIP: 29270J100 Class: Common Stock

ESSEX INVESTMENT MANAGEMENT CO LLC's Holding History (CIK: 0000201772)

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

Q4 2025
Shares 135,100 Value ($000) $1,822 Avg Close $15.16 Range $13.27 - $18.32
Q3 2025
Shares 137,886 Value ($000) $2,126 Avg Close $14.10 Range $12.54 - $15.47
Q2 2025
Shares 145,904 Value ($000) $1,865 Avg Close $13.55 Range $10.86 - $16.05
Q1 2025
Shares 179,564 Value ($000) $2,853 Avg Close $15.21 Range $13.80 - $16.86
Q4 2024
Shares 219,331 Value ($000) $3,224 Avg Close $17.11 Range $14.47 - $20.27
Q3 2024
Shares 237,426 Value ($000) $4,129 Avg Close $15.78 Range $12.46 - $18.36
Q2 2024
Shares 244,688 Value ($000) $3,252 Avg Close $13.78 Range $12.26 - $15.95
Q1 2024
Shares 256,367 Value ($000) $4,048 Avg Close $15.91 Range $13.95 - $19.19
Q4 2023
Shares 307,550 Value ($000) $5,794 Avg Close $18.57 Range $14.04 - $21.32
Q3 2023
Shares 378,234 Value ($000) $8,022 Avg Close $26.69 Range $20.50 - $30.76
Q2 2023
Shares 290,544 Value ($000) $8,121 Avg Close $24.94 Range $21.78 - $29.71
Q1 2023
Shares 453,984 Value ($000) $10,464 Avg Close $21.96 Range $19.68 - $24.18
Q4 2022
Shares 458,560 Value ($000) $9 Avg Close $21.88 Range $17.32 - $26.34
Q3 2022
Shares 458,532 Value ($000) $9,968 Avg Close $22.52 Range $18.74 - $26.20
Q2 2022
Shares 439,408 Value ($000) $8,533 Avg Close $19.40 Range $16.92 - $21.97
Q1 2022
Shares 449,138 Value ($000) $9,046 Avg Close $19.47 Range $17.84 - $22.09
Q4 2021
Shares 391,781 Value ($000) $8,419 Avg Close $20.92 Range $18.50 - $24.99
Q3 2021
Shares 384,034 Value ($000) $7,308 Avg Close $20.30 Range $17.94 - $23.69
Q2 2021
Shares 284,244 Value ($000) $6,475 Avg Close $19.71 Range $16.40 - $22.81
Q1 2021
Shares 377,383 Value ($000) $6,921 Avg Close $16.01 Range $13.45 - $20.25
Q4 2020
Shares 360,964 Value ($000) $4,924 Avg Close $10.67 Range $8.12 - $13.98
Q3 2020
Shares 146,103 Value ($000) $1,198 Avg Close $8.02 Range $6.69 - $9.18
Q2 2020
Shares 141,552 Value ($000) $1,075 Avg Close $7.92 Range $6.66 - $9.31
Q1 2020
Shares 514,182 Value ($000) $3,826 Avg Close $9.48 Range $6.11 - $11.07
Q4 2019
Shares 361,242 Value ($000) $3,537 Avg Close $9.21 Range $8.32 - $10.24
Q3 2019
Shares 322,932 Value ($000) $2,992 Avg Close $10.08 Range $8.61 - $12.04
Q2 2019
Shares 293,598 Value ($000) $3,059 Avg Close $9.84 Range $8.69 - $11.11
Q1 2019
Shares 227,786 Value ($000) $1,989 Avg Close $7.96 Range $6.56 - $9.18
Q4 2018
Shares 111,786 Value ($000) $752 Avg Close $7.87 Range $6.17 - $9.28
Q3 2018
Shares 318,384 Value ($000) $2,850 Avg Close $8.85 Range $7.68 - $10.25
Q2 2018
Shares 315,920 Value ($000) $2,553 Avg Close $8.43 Range $7.56 - $9.36
Q1 2018
Shares 321,543 Value ($000) $2,643 Avg Close $8.08 Range $6.17 - $9.21
Q4 2017
Shares 303,544 Value ($000) $2,656 Avg Close $9.12 Range $7.48 - $11.30
Q3 2017
Shares 284,100 Value ($000) $2,244 Avg Close $7.14 Range $6.13 - $8.43
Q2 2017
Shares 300,762 Value ($000) $2,493 Avg Close $8.01 Range $7.11 - $8.77
Q1 2017
Shares 302,541 Value ($000) $2,517 Avg Close $9.28 Range $7.11 - $11.46
Q4 2016
Shares 347,338 Value ($000) $3,595 Avg Close $12.01 Range $8.53 - $16.30
Q3 2016
Shares 350,179 Value ($000) $5,596 Avg Close $12.16 Range $8.35 - $16.67
Q4 2014
Shares 85,235 Value ($000) $449 Avg Close $4.54 Range $3.30 - $5.42
Q3 2014
Shares 38,742 Value ($000) $137 Avg Close $4.37 Range $3.54 - $5.15
Q2 2014
Shares 38,004 Value ($000) $187 Avg Close $5.16 Range $4.10 - $6.18
Q1 2014
Shares 201,917 Value ($000) $1,074 Avg Close $4.92 Range $3.82 - $6.98
Q4 2013
Shares 167,335 Value ($000) $929 Avg Close $5.62 Range $4.56 - $7.55
Q3 2013
Shares 209,406 Value ($000) $1,516 Avg Close $5.20 Range $3.99 - $7.75
Q2 2013
Shares 237,983 Value ($000) $983 Avg Close $3.81 Range $3.24 - $4.50