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FRONTIER CAPITAL MANAGEMENT CO LLC

Position in INSM — INSMED Inc

CIK 351173 Boston, MA

Position in INSM

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$84,788,702
+$8,006,088 QoQ
Shares Held
795,242
+69.4% QoQ
Ownership
0.364%
of shares outstanding
% of Portfolio
0.79%
of 13F equity value
Holder Rank
#53
of 663 holders
Holding Since
Jun 2020
15 quarters on record
Voting authority Sole 59% Shared 0% None 41%

Common Shares in INSM Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

FRONTIER CAPITAL MANAGEMENT CO LLC holds $975,847,387 across 22 Biotechnology names. INSM ranks #4 (8.7% of the industry book) .

# Ticker Company Shares Value (USD) Open
4 INSM
INSMED Inc
This page
795,242 $84,788,702

All Filings in INSM

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15 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $84,788,702 795,242
2026-03-31 $76,782,614 469,561
2025-12-31 $49,574,249 284,844
2025-09-30 $47,362,584 328,884
2025-06-30 $14,874,692 147,801
2025-03-31 $42,538,312 557,587
2024-12-31 $30,032,814 435,006
2024-09-30 $43,369,738 594,106
2024-06-30 $51,885,068 774,404
2024-03-31 $20,275,090 747,331
2021-06-30 $215,242 7,563
2021-03-31 $4,135,190 121,409
2020-12-31 $14,986,392 450,177
2020-09-30 $6,575,136 204,578
2020-06-30 $7,512,058 272,769