INSMED Inc — Director's Dealing 2025

Jun 25, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: INSMED Inc (INSM)
CIK: 0001104506
Period of Report: 2025-06-23

Reporting Person: Bonstein Sara (Chief Financial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-06-23	Common Stock	M	35253	$18.95	Acquired	138665	Direct
2025-06-23	Common Stock	M	12636	$19.74	Acquired	151301	Direct
2025-06-23	Common Stock	S	49104	$101.71	Disposed	102197	Direct
2025-06-23	Common Stock	S	8661	$102.15	Disposed	93536	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-06-23	Stock Option (right to buy)	$18.95	M	35253	Disposed	2033-05-11	Common Stock (35253)	Direct
2025-06-23	Stock Option (right to buy)	$19.74	M	12636	Disposed	2033-01-05	Common Stock (12636)	Direct

Footnotes

F1: This transaction was effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on March 5, 2025, in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

F2: This is the weighted average sales price representing 49,104 shares sold at prices ranging from $101.04 to $102.03 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: This is the weighted average sales price representing 8,661 shares sold at prices ranging from $102.04 to $102.61 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.

F4: 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.