STATE OF WISCONSIN INVESTMENT BOARD

Position in ERII — Energy Recovery, Inc.

CIK 854157 MADISON, WI

Position in ERII

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$534,978

-$998,376 QoQ

Shares Held

53,126

-53.3% QoQ

Ownership

0.103%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

23 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Industrials · as of Mar 31, 2026

STATE OF WISCONSIN INVESTMENT BOARD holds $22,946,859 across 5 Pollution & Treatment Controls names. ERII ranks #3 (2.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	VLTO	Veralto Corp	145,374	$12,853,969
2	ZWS	Zurn Elkay Water Solutions Corp	201,885	$9,052,523
3	ERII	Energy Recovery, Inc. This page	53,126	$534,978
4	CECO	Ceco Environmental Corp	7,374	$439,342
5	PCT	PureCycle Technologies, Inc.	12,726	$66,047

23 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$534,978	53,126	-53.3%	Shares	Sole	2026-05-15
2025-12-31	$1,533,354	113,666	-16.6%	Shares	Sole	2026-02-17
2025-09-30	$2,101,684	136,296	0.0%	Shares	Sole	2025-11-14
2025-06-30	$1,741,862	136,296	-2.9%	Shares	Sole	2025-08-14
2025-03-31	$2,231,543	140,437	+1.7%	Shares	Sole	2025-05-15
2024-12-31	$2,029,496	138,061	+7.7%	Shares	Sole	2025-02-14
2024-09-30	$2,230,093	128,240	0.0%	Shares	Sole	2024-11-14
2024-06-30	$1,704,309	128,240	-1.5%	Shares	Sole	2024-08-14
2024-03-31	$2,056,110	130,216	-10.9%	Shares	Sole	2024-05-14
2023-12-31	$2,754,012	146,179	+26.3%	Shares	Sole	2024-02-12
2023-09-30	$2,454,909	115,743	-2.5%	Shares	Sole	2023-11-14
2023-06-30	$3,316,854	118,671	-1.9%	Shares	Sole	2023-08-14
2023-03-31	$2,789,418	121,016	-11.1%	Shares	Sole	2023-05-15
2022-12-31	$2,789,877	136,158	-2.3%	Shares	Sole	2023-02-14
2022-09-30	$3,030,208	139,384	-2.0%	Shares	Sole	2022-11-14
2022-06-30	$2,762,184	142,234	+9.5%	Shares	Sole	2022-08-15
2022-03-31	$2,616,186	129,900	+5.7%	Shares	Sole	2022-05-13
2021-12-31	$2,641,121	122,900	0.0%	Shares	Sole	2022-02-11
2021-09-30	$2,338,787	122,900	+5.9%	Shares	Sole	2021-11-12
2021-06-30	$2,642,480	116,000	+36.2%	Shares	Sole	2021-08-12
2021-03-31	$1,562,366	85,189	+653.9%	Shares	Sole	2021-05-17
2020-06-30	$85,880	11,300	+2.7%	Shares	Sole	2020-08-12
2020-03-31	$81,840	11,000	—	Shares	Sole	2020-05-06
No filing history on record for this holder in this stock.