INSMED Inc — Director's Dealing 2025

Jun 12, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: INSMED Inc (INSM)
CIK: 0001104506
Period of Report: 2025-06-10

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-06-10	Common Stock	M	25740	$26.46	Acquired	108851	Direct
2025-06-10	Common Stock	S	25740	$88.64	Disposed	83111	Direct
2025-06-11	Common Stock	M	19423	$17.07	Acquired	102534	Direct
2025-06-11	Common Stock	S	19423	$94.50	Disposed	83111	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-06-10	Stock Option (right to buy)	$26.46	M	25740	Disposed	2031-05-12	Common Stock (25740)	Direct
2025-06-11	Stock Option (right to buy)	$17.07	M	19423	Disposed	2032-05-11	Common Stock (19423)	Direct

Footnotes

F1: This transaction was effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on June 7, 2024, in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F2: 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.

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