INSMED Inc — Director's Dealing 2025

Feb 5, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: INSMED Inc (INSM)
CIK: 0001104506
Period of Report: 2025-02-03

Reporting Person: Lewis William (Director, Chair and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-02-03	Common Stock	M	18750	$22.76	Acquired	398284	Direct
2025-02-03	Common Stock	S	241	$75.25	Disposed	398043	Direct
2025-02-03	Common Stock	S	1872	$76.35	Disposed	396171	Direct
2025-02-03	Common Stock	S	9869	$77.97	Disposed	386302	Direct
2025-02-03	Common Stock	S	6768	$78.44	Disposed	379534	Direct
2025-02-03	Common Stock	M	6830	$10.85	Acquired	240754	Indirect
2025-02-03	Common Stock	S	41	$74.86	Disposed	240713	Indirect
2025-02-03	Common Stock	S	745	$76.43	Disposed	239968	Indirect
2025-02-03	Common Stock	S	3463	$77.95	Disposed	236505	Indirect
2025-02-03	Common Stock	S	2581	$78.40	Disposed	233924	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-02-03	Stock Option (right to buy)	$22.76	M	18750	Disposed	2025-05-21	Common Stock (18750)	Direct
2025-02-03	Stock Option (right to buy)	$10.85	M	6830	Disposed	2026-05-19	Common Stock (6830)	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	50500	Indirect

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 241 shares sold at prices ranging from $74.86 to $75.83 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 1,872 shares sold at prices ranging from $76.00 to $76.57 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: This is the weighted average sales price representing 9,869 shares sold at prices ranging from $77.29 to $78.28 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.

F5: This is the weighted average sales price representing 6,768 shares sold at prices ranging from $78.31 to $78.80 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.

F6: This is the weighted average sales price representing 745 shares sold at prices ranging from $76.10 to $76.90 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.

F7: This is the weighted average sales price representing 3,463 shares sold at prices ranging from $77.24 to $78.23 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.

F8: This is the weighted average sales price representing 2,581 shares sold at prices ranging from $78.26 to $78.75 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.

F9: 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.