BLAIR WILLIAM & CO/IL

Position in CLH — Clean Harbors Inc

CIK 902367 CHICAGO, IL

Position in CLH

as of Mar 31, 2026 · filed May 8, 2026 Compact

Position Value

$760,121

+$293,975 QoQ

Shares Held

2,651

+33.4% QoQ

Ownership

0.005%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Dec 2022

14 quarters on record

Voting authority Sole 97.5103734439834.ToString("F0")% Shared 0.ToString("F0")% None 2.4896265560165975.ToString("F0")%

Industrials · as of Mar 31, 2026

BLAIR WILLIAM & CO/IL holds $178,565,272 across 6 Waste Management names. CLH ranks #6 (0.4% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	WM	Waste Management Inc	484,303	$111,287,986
2	RSG	Republic Services, Inc.	141,662	$31,026,811
3	CWST	Casella Waste Systems Inc	290,464	$23,045,413
4	WCN	Waste Connections, Inc.	40,635	$6,600,749
5	ONT	Onterris, Inc.	266,980	$5,844,192
6	CLH	Clean Harbors Inc This page	2,651	$760,121

14 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$760,121	2,651	+33.4%	Shares	Sole	2026-05-08
2025-12-31	$466,146	1,988	-2.2%	Shares	Sole	2026-02-17
2025-09-30	$472,103	2,033	-6.4%	Shares	Sole	2025-11-12
2025-06-30	$502,122	2,172	+12.2%	Shares	Sole	2025-07-24
2025-03-31	$381,388	1,935	0.0%	Shares	Sole	2025-05-09
2024-12-31	$445,320	1,935	0.0%	Shares	Sole	2025-02-12
2024-09-30	$467,708	1,935	0.0%	Shares	Sole	2024-11-12
2024-06-30	$437,600	1,935	-0.3%	Shares	Sole	2024-08-12
2024-03-31	$390,541	1,940	+0.3%	Shares	Sole	2024-05-09
2023-12-31	$337,676	1,935	0.0%	Shares	Sole	2024-02-12
2023-09-30	$323,841	1,935	0.0%	Shares	Sole	2023-11-09
2023-06-30	$318,172	1,935	0.0%	Shares	Sole	2023-08-11
2023-03-31	$275,853	1,935	0.0%	Shares	Sole	2023-05-12
2022-12-31	$220,822	1,935	—	Shares	Sole	2023-02-10
No filing history on record for this holder in this stock.