Castle Hook Partners LP

Position in INSM — INSMED Inc

CIK 1687241 NEW YORK, NY

Position in INSM

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$105,906,712

-$101,723,462 QoQ

Shares Held

993,310

-21.8% QoQ

Ownership

0.455%

of shares outstanding

% of Portfolio

1.14%

of 13F equity value

Holder Rank

#45

of 665 holders

Holding Since

Mar 2021

6 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

Castle Hook Partners LP holds $154,698,791 across 3 Biotechnology names. INSM ranks #1 (68.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	INSM	INSMED Inc This page	993,310	$105,906,712
2	NAMS	NewAmsterdam Pharma Co N.V.	1,371,005	$46,463,359
3	NUVB	Nuvation Bio Inc.	409,986	$2,328,720

6 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$105,906,712	993,310	-21.8%	Shares	Sole	2026-08-14
2026-03-31	$207,630,174	1,269,754	+1.3%	Shares	Sole	2026-05-15
2025-12-31	$218,170,974	1,253,568	+14.9%	Shares	Sole	2026-02-17
2025-09-30	$157,173,234	1,091,405	+141.1%	Shares	Sole	2025-11-14
2025-06-30	$45,555,299	452,656	+107.8%	Shares	Sole	2025-08-14
2021-03-31	$7,420,652	217,870	—	Shares	Sole	2021-05-14
No filing history on record for this holder in this stock.