NORTH STAR ASSET MANAGEMENT INC

Position in AVTR — Avantor, Inc.

CIK 1056559 NEENAH, WI

Position in AVTR

as of Mar 31, 2026 · filed May 6, 2026 Compact

Position Value

$1,414,006

-$1,315,399 QoQ

Shares Held

180,358

-24.3% QoQ

Ownership

0.026%

of shares outstanding

% of Portfolio

0.08%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2021

21 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Mar 31, 2026

NORTH STAR ASSET MANAGEMENT INC holds $32,789,753 across 5 Medical Instruments & Supplies names. AVTR ranks #5 (4.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ISRG	Intuitive Surgical Inc	23,747	$10,947,128
2	RGEN	Repligen Corp	83,963	$9,892,520
3	HOLX	HOLOGIC INC	102,412	$7,741,323
4	RMD	Resmed Inc	12,450	$2,794,776
5	AVTR	Avantor, Inc. This page	180,358	$1,414,006

21 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$1,414,006	180,358	-24.3%	Shares	Sole	2026-05-06
2025-12-31	$2,729,405	238,168	-13.1%	Shares	Sole	2026-02-09
2025-09-30	$3,420,331	274,065	-5.3%	Shares	Sole	2025-11-10
2025-06-30	$3,894,301	289,324	+12.7%	Shares	Sole	2025-08-12
2025-03-31	$4,160,053	256,635	+8.5%	Shares	Sole	2025-05-08
2024-12-31	$4,984,782	236,582	+8.9%	Shares	Sole	2025-02-19
2024-09-30	$5,618,317	217,175	+4.8%	Shares	Sole	2024-11-14
2024-06-30	$4,393,742	207,252	+1.0%	Shares	Sole	2024-08-05
2024-03-31	$5,246,299	205,174	+3.9%	Shares	Sole	2024-05-08
2023-12-31	$4,509,404	197,521	-4.3%	Shares	Sole	2024-02-01
2023-09-30	$4,351,375	206,422	-1.8%	Shares	Sole	2023-10-26
2023-06-30	$4,315,905	210,122	+6.5%	Shares	Sole	2023-08-09
2023-03-31	$4,169,019	197,210	+3.9%	Shares	Sole	2023-05-10
2022-12-31	$4,001,194	189,720	+5.4%	Shares	Sole	2023-03-06
2022-09-30	$3,529,489	180,076	+5.0%	Shares	Sole	2022-11-08
2022-06-30	$5,331,752	171,439	+4.2%	Shares	Sole	2022-07-28
2022-03-31	$5,566,128	164,581	+4.5%	Shares	Sole	2022-04-29
2021-12-31	$6,636,585	157,489	+11.6%	Shares	Sole	2022-02-07
2021-09-30	$5,771,562	141,114	+8.9%	Shares	Sole	2021-10-20
2021-06-30	$4,602,486	129,611	+14.9%	Shares	Sole	2021-07-30
2021-03-31	$3,263,246	112,798	—	Shares	Sole	2021-04-29
No filing history on record for this holder in this stock.