ENERGY RECOVERY INC

Ticker: ERII CUSIP: 29270J100 Class: Common Stock

RENAISSANCE TECHNOLOGIES LLC's Holding History (CIK: 0001037389)

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

Q4 2025

Shares 102,985 Value ($000) $1,389 Avg Close $15.16 Range $13.27 - $18.32

Q3 2025

Shares 55,600 Value ($000) $857 Avg Close $14.10 Range $12.54 - $15.47

Q2 2025

Shares 141,100 Value ($000) $1,803 Avg Close $13.55 Range $10.86 - $16.05

Q1 2025

Shares 241,500 Value ($000) $3,837 Avg Close $15.21 Range $13.80 - $16.86

Q4 2024

Shares 190,400 Value ($000) $2,799 Avg Close $17.11 Range $14.47 - $20.27

Q1 2024

Shares 162,000 Value ($000) $3 Avg Close $15.91 Range $13.95 - $19.19

Q4 2023

Shares 99,300 Value ($000) $2 Avg Close $18.57 Range $14.04 - $21.32

Q3 2022

Shares 49,500 Value ($000) $1,076 Avg Close $22.52 Range $18.74 - $26.20

Q2 2022

Shares 89,700 Value ($000) $1,742 Avg Close $19.40 Range $16.92 - $21.97

Q1 2022

Shares 139,000 Value ($000) $2,799 Avg Close $19.47 Range $17.84 - $22.09

Q3 2021

Shares 25,100 Value ($000) $478 Avg Close $20.30 Range $17.94 - $23.69

Q1 2021

Shares 15,400 Value ($000) $282 Avg Close $16.01 Range $13.45 - $20.25

Q2 2020

Shares 33,700 Value ($000) $256 Avg Close $7.92 Range $6.66 - $9.31

Q1 2020

Shares 68,100 Value ($000) $507 Avg Close $9.48 Range $6.11 - $11.07

Q4 2019

Shares 76,300 Value ($000) $747 Avg Close $9.21 Range $8.32 - $10.24

Q3 2019

Shares 99,200 Value ($000) $919 Avg Close $10.08 Range $8.61 - $12.04

Q1 2019

Shares 40,800 Value ($000) $356 Avg Close $7.96 Range $6.56 - $9.18

Q3 2017

Shares 278,700 Value ($000) $2,202 Avg Close $7.14 Range $6.13 - $8.43

Q2 2017

Shares 407,300 Value ($000) $3,377 Avg Close $8.01 Range $7.11 - $8.77

Q1 2017

Shares 441,900 Value ($000) $3,677 Avg Close $9.28 Range $7.11 - $11.46

Q4 2016

Shares 16,400 Value ($000) $170 Avg Close $12.01 Range $8.53 - $16.30

Q3 2016

Shares 23,900 Value ($000) $382 Avg Close $12.16 Range $8.35 - $16.67

Q2 2016

Shares 268,100 Value ($000) $2,383 Avg Close $10.67 Range $7.77 - $13.35

Q1 2016

Shares 141,800 Value ($000) $1,466 Avg Close $7.29 Range $5.28 - $10.82

Q4 2015

Shares 155,700 Value ($000) $1,101 Avg Close $6.31 Range $2.09 - $9.50

Q2 2013

Shares 141,100 Value ($000) $583 Avg Close $3.81 Range $3.24 - $4.50

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	102,985	$1,389	$15.16	$13.27 - $18.32
Q3 2025	55,600	$857	$14.10	$12.54 - $15.47
Q2 2025	141,100	$1,803	$13.55	$10.86 - $16.05
Q1 2025	241,500	$3,837	$15.21	$13.80 - $16.86
Q4 2024	190,400	$2,799	$17.11	$14.47 - $20.27
Q1 2024	162,000	$3	$15.91	$13.95 - $19.19
Q4 2023	99,300	$2	$18.57	$14.04 - $21.32
Q3 2022	49,500	$1,076	$22.52	$18.74 - $26.20
Q2 2022	89,700	$1,742	$19.40	$16.92 - $21.97
Q1 2022	139,000	$2,799	$19.47	$17.84 - $22.09
Q3 2021	25,100	$478	$20.30	$17.94 - $23.69
Q1 2021	15,400	$282	$16.01	$13.45 - $20.25
Q2 2020	33,700	$256	$7.92	$6.66 - $9.31
Q1 2020	68,100	$507	$9.48	$6.11 - $11.07
Q4 2019	76,300	$747	$9.21	$8.32 - $10.24
Q3 2019	99,200	$919	$10.08	$8.61 - $12.04
Q1 2019	40,800	$356	$7.96	$6.56 - $9.18
Q3 2017	278,700	$2,202	$7.14	$6.13 - $8.43
Q2 2017	407,300	$3,377	$8.01	$7.11 - $8.77
Q1 2017	441,900	$3,677	$9.28	$7.11 - $11.46
Q4 2016	16,400	$170	$12.01	$8.53 - $16.30
Q3 2016	23,900	$382	$12.16	$8.35 - $16.67
Q2 2016	268,100	$2,383	$10.67	$7.77 - $13.35
Q1 2016	141,800	$1,466	$7.29	$5.28 - $10.82
Q4 2015	155,700	$1,101	$6.31	$2.09 - $9.50
Q2 2013	141,100	$583	$3.81	$3.24 - $4.50