William Lewis - 07 Jan 2025 Form 4 Insider Report for INSMED Inc (INSM)

Role: Chair and CEO, Director
Signature: /s/ William Lewis, by Michael A. Smith as Attorney-in-fact
Issuer symbol: INSM
Transactions as of: 07 Jan 2025
Net transactions value: -$995,012
Form type: 4
Filing time: 10 Jan 2025, 18:44:57 UTC
Previous filing: 08 Jan 2025
Next filing: 16 Jan 2025
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	INSM	Common Stock	Sale	$542,552	-8,218	-2.1%	$66.02	376,742	07 Jan 2025	Direct	F1, F2
transaction	INSM	Common Stock	Sale	$263,774	-3,999	-1.1%	$65.96	372,743	08 Jan 2025	Direct	F1
transaction	INSM	Common Stock	Award		+22,824	+6.1%		395,567	08 Jan 2025	Direct	F3, F4
transaction	INSM	Common Stock	Sale	$188,686	-2,978	-0.75%	$63.36	392,589	10 Jan 2025	Direct	F1
holding	INSM	Common Stock						233,924	07 Jan 2025	By the Katie Procter Dynasty Trust
holding	INSM	Common Stock						50,500	07 Jan 2025	By the William Lewis Family Legacy Trust

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	INSM	Stock Option (right to buy)	Award	$0	+109,490		$0.000000	109,490	08 Jan 2025	Common Stock	109,490	$65.72	Direct	F5

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Shares sold to satisfy tax withholding obligations upon the vesting of Restricted Stock Units (RSUs) and to cover related broker fees.
F2	This is the weighted average sales price representing 8,218 shares sold at prices ranging from $66.00 to $66.05 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	Represents RSUs, each representing a contingent right to receive one share of Common Stock, granted pursuant to the Company's Amended and Restated 2019 Incentive Plan, as amended. The RSUs vest as follows: 25% on the first day of the first month following the first anniversary of the date of grant (the Initial Vesting Date) and 25% on each anniversary of the Initial Vesting Date until fully vested.
F4	Each RSU was granted on January 8, 2025 for no consideration.
F5	These stock options were granted under the Company's Amended and Restated 2019 Incentive Plan, as amended. The options become exercisable based on the following vesting schedule: 25% vest on the Initial Vesting Date and an additional 12.5% vest every six months thereafter until fully vested.