INSMED INC

Ticker: INSM CUSIP: 457669307 Class: EQTY

FRONTIER CAPITAL MANAGEMENT CO LLC's Holding History (CIK: 0000351173)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 284,844 Value ($000) $49,574 Avg Close $182.48 Range $143.18 - $212.75

Q3 2025

Shares 328,884 Value ($000) $47,363 Avg Close $122.51 Range $95.01 - $149.08

Q2 2025

Shares 147,801 Value ($000) $14,875 Avg Close $76.46 Range $60.40 - $106.83

Q1 2025

Shares 557,587 Value ($000) $42,538 Avg Close $76.49 Range $61.50 - $84.91

Q4 2024

Shares 435,006 Value ($000) $30,033 Avg Close $72.02 Range $64.86 - $78.83

Q3 2024

Shares 594,106 Value ($000) $43,370 Avg Close $73.80 Range $61.52 - $80.53

Q2 2024

Shares 774,404 Value ($000) $51,885 Avg Close $38.78 Range $21.92 - $70.65

Q1 2024

Shares 747,331 Value ($000) $20,275 Avg Close $27.99 Range $25.06 - $31.14

Q2 2021

Shares 7,563 Value ($000) $215 Avg Close $29.68 Range $23.95 - $36.97

Q1 2021

Shares 121,409 Value ($000) $4,135 Avg Close $38.22 Range $31.69 - $45.44

Q4 2020

Shares 450,177 Value ($000) $14,986 Avg Close $36.53 Range $30.03 - $42.71

Q3 2020

Shares 204,578 Value ($000) $6,575 Avg Close $28.74 Range $25.21 - $35.32

Q2 2020

Shares 272,769 Value ($000) $7,512 Avg Close $23.71 Range $13.77 - $30.18

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	284,844	$49,574	$182.48	$143.18 - $212.75
Q3 2025	328,884	$47,363	$122.51	$95.01 - $149.08
Q2 2025	147,801	$14,875	$76.46	$60.40 - $106.83
Q1 2025	557,587	$42,538	$76.49	$61.50 - $84.91
Q4 2024	435,006	$30,033	$72.02	$64.86 - $78.83
Q3 2024	594,106	$43,370	$73.80	$61.52 - $80.53
Q2 2024	774,404	$51,885	$38.78	$21.92 - $70.65
Q1 2024	747,331	$20,275	$27.99	$25.06 - $31.14
Q2 2021	7,563	$215	$29.68	$23.95 - $36.97
Q1 2021	121,409	$4,135	$38.22	$31.69 - $45.44
Q4 2020	450,177	$14,986	$36.53	$30.03 - $42.71
Q3 2020	204,578	$6,575	$28.74	$25.21 - $35.32
Q2 2020	272,769	$7,512	$23.71	$13.77 - $30.18