ENERGY RECOVERY INC

Ticker: ERII CUSIP: 29270J100 Class: Common Stock

Aigen Investment Management, LP's Holding History (CIK: 0001741224)

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

Q3 2024

Shares 11,044 Value ($000) $192 Avg Close $15.78 Range $12.46 - $18.36

Q2 2024

Shares 23,047 Value ($000) $306 Avg Close $13.78 Range $12.26 - $15.95

Q1 2024

Shares 19,313 Value ($000) $305 Avg Close $15.91 Range $13.95 - $19.19

Q4 2023

Shares 28,829 Value ($000) $543 Avg Close $18.57 Range $14.04 - $21.32

Q3 2022

Shares 20,473 Value ($000) $445 Avg Close $22.52 Range $18.74 - $26.20

Q2 2022

Shares 16,466 Value ($000) $320 Avg Close $19.40 Range $16.92 - $21.97

Q4 2019

Shares 11,464 Value ($000) $112 Avg Close $9.21 Range $8.32 - $10.24

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2024	11,044	$192	$15.78	$12.46 - $18.36
Q2 2024	23,047	$306	$13.78	$12.26 - $15.95
Q1 2024	19,313	$305	$15.91	$13.95 - $19.19
Q4 2023	28,829	$543	$18.57	$14.04 - $21.32
Q3 2022	20,473	$445	$22.52	$18.74 - $26.20
Q2 2022	16,466	$320	$19.40	$16.92 - $21.97
Q4 2019	11,464	$112	$9.21	$8.32 - $10.24