Chesley Taft & Associates LLC

Position in WAT — Waters Corp /De/

CIK 1164632 CHICAGO, IL

Position in WAT

as of Jun 30, 2026 · filed Jul 8, 2026 Compact

Position Value

$228,023

-$10,216 QoQ

Shares Held

608

-24.0% QoQ

Ownership

0.001%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

#798

of 1,173 holders

Holding Since

Mar 2026

2 quarters on record

Voting authority Sole 73% Shared 0% None 27%

Healthcare · as of Jun 30, 2026

Chesley Taft & Associates LLC holds $29,930,930 across 4 Diagnostics & Research names. WAT ranks #4 (0.8% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	TMO	Thermo Fisher Scientific Inc.	42,333	$21,224,072
2	DHR	Danaher Corp /De/	37,898	$7,218,810
3	A	Agilent Technologies, Inc.	9,486	$1,260,025
4	WAT	Waters Corp /De/ This page	608	$228,023

2 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$228,023	608	-24.0%	Shares	Other	2026-07-08
2026-03-31	$238,239	800	—	Shares	Sole	2026-04-13
No filing history on record for this holder in this stock.