STATE OF WISCONSIN INVESTMENT BOARD

Position in CLH — Clean Harbors Inc

CIK 854157 MADISON, WI

Position in CLH

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

Position Value

$17,386,160

+$2,610,872 QoQ

Shares Held

60,636

-3.8% QoQ

Ownership

0.115%

of shares outstanding

% of Portfolio

0.05%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 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 $129,321,031 across 8 Waste Management names. CLH ranks #4 (13.4% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	WM	Waste Management Inc	218,888	$50,298,273
2	RSG	Republic Services, Inc.	115,823	$25,367,553
3	WCN	Waste Connections, Inc.	133,490	$21,684,115
4	CLH	Clean Harbors Inc This page	60,636	$17,386,160
5	CWST	Casella Waste Systems Inc	112,986	$8,964,309
6	GFL	GFL Environmental Inc.	133,946	$5,588,227
7	ABAT	AMERICAN BATTERY TECHNOLOGY Co	11,611	$32,394
8	NVRI	Enviri Corp	84,834	$0

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$17,386,160	60,636	-3.8%	Shares	Sole	2026-05-15
2025-12-31	$14,775,288	63,013	-21.5%	Shares	Sole	2026-02-17
2025-09-30	$18,648,891	80,307	+5.4%	Shares	Sole	2025-11-14
2025-06-30	$17,608,287	76,167	-3.5%	Shares	Sole	2025-08-14
2025-03-31	$15,557,497	78,932	+1.4%	Shares	Sole	2025-05-15
2024-12-31	$17,918,470	77,859	+13.3%	Shares	Sole	2025-02-14
2024-09-30	$16,605,718	68,701	+1.0%	Shares	Sole	2024-11-14
2024-06-30	$15,388,376	68,045	+1.6%	Shares	Sole	2024-08-14
2024-03-31	$13,487,770	67,000	-11.5%	Shares	Sole	2024-05-14
2023-12-31	$13,218,434	75,746	+7.0%	Shares	Sole	2024-02-12
2023-09-30	$11,852,602	70,821	-5.1%	Shares	Sole	2023-11-14
2023-06-30	$12,274,370	74,648	-3.1%	Shares	Sole	2023-08-14
2023-03-31	$10,976,692	76,997	-10.8%	Shares	Sole	2023-05-15
2022-12-31	$9,849,240	86,306	-3.6%	Shares	Sole	2023-02-14
2022-09-30	$9,841,450	89,484	-3.5%	Shares	Sole	2022-11-14
2022-06-30	$8,132,970	92,768	+11.0%	Shares	Sole	2022-08-15
2022-03-31	$9,330,982	83,581	+1257.1%	Shares	Sole	2022-05-13
2021-12-31	$614,483	6,159	-3.0%	Shares	Sole	2022-02-11
2021-09-30	$659,366	6,348	+5.0%	Shares	Sole	2021-11-12
2021-06-30	$563,031	6,045	-7.4%	Shares	Sole	2021-08-12
2021-03-31	$548,659	6,527	-1.5%	Shares	Sole	2021-05-17
2020-12-31	$504,238	6,626	-3.9%	Shares	Sole	2021-02-03
2020-09-30	$386,382	6,896	+2.1%	Shares	Sole	2020-11-16
2020-06-30	$405,224	6,756	-3.3%	Shares	Sole	2020-08-12
2020-03-31	$358,661	6,986	—	Shares	Sole	2020-05-06
No filing history on record for this holder in this stock.