INSMED Inc — Director's Dealing 2024

May 30, 2024

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: INSMED Inc (INSM)
CIK: 0001104506
Period of Report: 2024-05-28

Reporting Person: Flammer Martina M.D. (Chief Medical Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-05-28	Common Stock	M	103806	$23.66	Acquired	209940	Direct
2024-05-28	Common Stock	S	103806	$49.62	Disposed	106134	Direct
2024-05-30	Common Stock	M	21195	$23.75	Acquired	127329	Direct
2024-05-30	Common Stock	S	21195	$55	Disposed	106134	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2024-05-28	Stock Option (right to buy)	$23.66	M	103806	Disposed	2030-01-02	Common Stock (103806)	Direct
2024-05-30	Stock Option (right to buy)	$23.75	M	21195	Disposed	2030-01-03	Common Stock (21195)	Direct

Footnotes

F1: This transaction was effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F2: This is the weighted average sales price representing 103,806 shares sold at prices ranging from $49.53 to $50.00 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.

F3: The options became exercisable based on the following vesting schedule: 25% vested on the first anniversary of the grant date and an additional 12.5% vested on each sixth month anniversary date thereafter through the fourth anniversary of the date of grant. All options are currently exercisable.