Form 4 for INSM INSMED Inc

Accepted 2025-08-18 00:00:00 ET · period of report 2025-08-14 · accession 0001401017-25-000005 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
M	2025-08-18	2025-08-14	INSM	Schaeffer Orlov S Nicole	Chief People Strategy Off	S - Sale	$127.34	-10.0K	80.5K	-11%	-$1.27M

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Common Stock	2025-08-14	S	D	700	$128.16	79,764	D	—	—	(F4) This is the weighted average sales price representing 700 shares sold at prices ranging from $128.10 to $128.24 per share. The Reporting Person undertakes to provide to the SEC staff, the issuer, or a security holder of the issuer the number of shares sold at each price within the price range upon request.
2	Common	Common Stock	2025-08-14	S	D	3,554	$126.57	86,210	D	—	—	(F1) This is the weighted average sales price representing 3,554 shares sold at prices ranging from $126.01 to $126.94 per share. The Reporting Person undertakes to provide to the SEC staff, the issuer, or a security holder of the issuer the number of shares sold at each price within the price range upon request. (F2) Includes 357 shares acquired through the Company's 2018 Employee Stock Purchase Plan.
3	Common	Common Stock	2025-08-14	S	D	5,746	$127.71	80,464	D	—	—	(F3) This is the weighted average sales price representing 5,746 shares sold at prices ranging from $127.08 to $128.00 per share. The Reporting Person undertakes to provide to the SEC staff, the issuer, or a security holder of the issuer the number of shares sold at each price within the price range upon request.