Clearbridge Investments, LLC

Position in INSM — INSMED Inc

CIK 1348883 NEW YORK, NY

Position in INSM

as of Mar 31, 2026 · filed May 13, 2026 Compact

Position Value

$105,214,491

-$37,326,183 QoQ

Shares Held

643,435

-21.4% QoQ

Ownership

0.297%

of shares outstanding

% of Portfolio

0.09%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

11 quarters on record

Voting authority Sole 99.99518210852689.ToString("F0")% Shared 0.ToString("F0")% None 0.004817891473109172.ToString("F0")%

Healthcare · as of Mar 31, 2026

Clearbridge Investments, LLC holds $2,718,012,251 across 26 Biotechnology names. INSM ranks #5 (3.9% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	VRTX	Vertex Pharmaceuticals Inc / Ma	2,700,975	$1,206,093,376
2	ALNY	Alnylam Pharmaceuticals, Inc.	1,356,036	$448,671,631
3	ARGX	Argenx SE	231,356	$168,947,719
4	TGTX	Tg Therapeutics, Inc.	3,210,930	$106,667,094
5	INSM	INSMED Inc This page	643,435	$105,214,491
6	BBIO	BridgeBio Pharma, Inc.	951,200	$70,636,112
7	PTGX	Protagonist Therapeutics, Inc	621,820	$65,539,828
8	MIRM	Mirum Pharmaceuticals, Inc.	671,870	$62,067,350

11 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$105,214,491	643,435	-21.4%	Shares	Sole	2026-05-13
2025-12-31	$142,540,674	819,011	-23.3%	Shares	Sole	2026-02-11
2025-09-30	$153,805,272	1,068,018	-25.0%	Shares	Sole	2025-11-13
2025-06-30	$143,367,919	1,424,562	-22.1%	Shares	Sole	2025-08-12
2025-03-31	$139,513,659	1,828,728	-2.6%	Shares	Sole	2025-05-13
2024-12-31	$129,688,188	1,878,450	+3.9%	Shares	Sole	2025-02-12
2024-09-30	$132,039,991	1,808,767	+10.0%	Shares	Sole	2024-11-12
2024-06-30	$110,211,516	1,644,948	+76.8%	Shares	Sole	2024-08-27
2024-03-31	$25,241,996	930,409	+135133.9%	Shares	Sole	2024-05-13
2020-06-30	$18,947	688	0.0%	Shares	Defined	2020-08-14
2020-03-31	$11,028	688	—	Shares	Defined	2020-05-22
No filing history on record for this holder in this stock.