Cornerstone Capital, Inc.

Position in ATR — Aptargroup, Inc.

CIK 819535 Palo Alto, CA

Position in ATR

as of Mar 31, 2026 · filed May 12, 2026 Compact

Position Value

$23,124,543

+$5,226,670 QoQ

Shares Held

183,499

+25.0% QoQ

Ownership

0.288%

of shares outstanding

% of Portfolio

2.42%

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")%

Healthcare · as of Mar 31, 2026

Cornerstone Capital, Inc. holds $28,898,886 across 3 Medical Instruments & Supplies names. ATR ranks #1 (80.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ATR	Aptargroup, Inc. This page	183,499	$23,124,543
2	ISRG	Intuitive Surgical Inc	11,694	$5,390,817
3	NEPH	Nephros Inc	128,700	$383,526

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$23,124,543	183,499	+25.0%	Shares	Sole	2026-05-12
2025-12-31	$17,897,873	146,752	+3.1%	Shares	Sole	2026-02-12
2025-09-30	$19,020,486	142,305	+43.4%	Shares	Sole	2025-11-10
2025-06-30	$15,523,643	99,237	-4.4%	Shares	Sole	2025-08-12
2025-03-31	$15,407,927	103,841	-0.2%	Shares	Sole	2025-05-13
2024-12-31	$16,339,971	104,010	-16.2%	Shares	Sole	2025-02-13
2024-09-30	$19,880,379	124,105	-3.0%	Shares	Sole	2024-10-30
2024-06-30	$18,018,047	127,960	+1.6%	Shares	Sole	2024-08-02
2024-03-31	$18,120,787	125,935	-2.0%	Shares	Sole	2024-05-01
2023-12-31	$15,888,013	128,523	-0.6%	Shares	Sole	2024-02-02
2023-09-30	$16,172,923	129,342	-2.1%	Shares	Sole	2023-11-13
2023-06-30	$15,312,289	132,162	-5.5%	Shares	Sole	2023-08-21
2023-03-31	$16,526,389	139,829	+2.4%	Shares	Sole	2023-05-15
2022-12-31	$15,016,779	136,541	-0.4%	Shares	Sole	2023-02-13
2022-09-30	$13,028,042	137,094	+5.0%	Shares	Sole	2022-10-27
2022-06-30	$13,476,542	130,574	-1.6%	Shares	Sole	2022-08-15
2022-03-31	$15,593,777	132,713	-0.2%	Shares	Sole	2022-05-13
2021-12-31	$16,281,878	132,935	+0.8%	Shares	Sole	2022-02-11
2021-09-30	$15,733,791	131,829	-0.9%	Shares	Sole	2021-11-09
2021-06-30	$18,728,058	132,974	-1.0%	Shares	Sole	2021-08-13
2021-03-31	$19,021,747	134,268	-3.3%	Shares	Sole	2021-05-17
2020-12-31	$19,012,241	138,887	-1.7%	Shares	Sole	2021-02-12
2020-09-30	$16,000,254	141,345	+0.6%	Shares	Sole	2020-10-27
2020-06-30	$15,729,606	140,468	-5.5%	Shares	Sole	2020-08-14
2020-03-31	$14,795,426	148,638	—	Shares	Sole	2020-05-15
No filing history on record for this holder in this stock.