INSMED INC

Ticker: INSM CUSIP: 457669307 Class: EQTY

Atika Capital Management LLC's Holding History (CIK: 0001599731)

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

Q4 2025

Shares 77,200 Value ($000) $13,436 Avg Close $182.48 Range $143.18 - $212.75

Q3 2025

Shares 95,000 Value ($000) $13,681 Avg Close $122.51 Range $95.01 - $149.08

Q1 2025

Shares 96,000 Value ($000) $7,324 Avg Close $76.49 Range $61.50 - $84.91

Q3 2024

Shares 62,000 Value ($000) $4,526 Avg Close $73.80 Range $61.52 - $80.53

Q2 2024

Shares 36,000 Value ($000) $2,412 Avg Close $38.78 Range $21.92 - $70.65

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	77,200	$13,436	$182.48	$143.18 - $212.75
Q3 2025	95,000	$13,681	$122.51	$95.01 - $149.08
Q1 2025	96,000	$7,324	$76.49	$61.50 - $84.91
Q3 2024	62,000	$4,526	$73.80	$61.52 - $80.53
Q2 2024	36,000	$2,412	$38.78	$21.92 - $70.65