William Lewis - Jan 4, 2024 Form 4 Insider Report for INSMED Inc (INSM)

Role: Chair and CEO, Director
Signature: /s/ William H. Lewis, by Michael Smith as Attorney in Fact
Stock symbol: INSM
Transactions as of: Jan 4, 2024
Transactions value $: -$204,195
Form type: 4
Date filed: 1/5/2024, 05:29 PM
Previous filing: Oct 31, 2023
Next filing: Jan 10, 2024

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	INSM	Common Stock	Award		+37.9K	+11.05%		381K	Jan 4, 2024	Direct	F1, F2
transaction	INSM	Common Stock	Sale	-$204K	-6.98K	-1.83%	$29.26	374K	Jan 5, 2024	Direct	F3, F4
holding	INSM	Common Stock						234K	Jan 4, 2024	By ARTICLE 4 KATIE PROCTER DYNASTY TRUST
holding	INSM	Common Stock						500	Jan 4, 2024	By ARTICLE 4 TRUST UNDER WILLIAM LEWIS FAMILY LEGACY TRUST U/A11/1/2020

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	+187K		$0.00	187K	Jan 4, 2024	Common Stock	187K	$29.13	Direct	F5

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

Explanation of Responses:

Id	Content
F1	Represents Restricted Stock Units, each representing a contingent right to receive one share of Common Stock, granted pursuant to the Company's Amended and Restated 2019 Incentive Plan. The Restricted Stock Units vest and become available as follows: twenty five (25%) percent on each anniversary of the date of grant through the fourth anniversary date of the date of the grant.
F2	Each Restricted Stock Unit was received as a grant on January 4, 2024, for no consideration.
F3	Shares sold to satisfy withholding tax obligations upon the vesting of Restricted Stock Units and to cover related broker fees.
F4	This is the weighted average sales price representing 6,979 shares sold at prices ranging from $29.24 to $29.26 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	Stock options granted under the Company's Amended and Restated 2019 Incentive Plan. The options become exercisable based on the following vesting schedule: twenty five percent (25%) vest on the first anniversary of the grant date and an additional twelve and one half percent (12.5%) vest on each sixth month anniversary date thereafter through the fourth anniversary date of the date of grant.