INSMED Inc — Director's Dealing 2015

May 13, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: INSMED Inc (INSM)
CIK: 0001104506
Period of Report: 2015-05-12

Reporting Person: Quigley Mark (Vice President, Quality)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-05-12	Common Stock	M	12656	$15.61	Acquired	12656	Direct
2015-05-12	Common Stock	S	12656	$22.07	Disposed	0	Direct
2015-05-12	Common Stock	M	6094	$15.61	Acquired	6094	Direct
2015-05-12	Common Stock	S	6094	$22.07	Disposed	0	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-05-12	Stock Option (right to buy)	$15.61	M	12656	Disposed	2023-09-30	Common Stock (12656)	Direct
2015-05-12	Stock Option (right to buy)	$15.61	M	6094	Disposed	2023-09-30	Common Stock (6094)	Direct

Footnotes

F1: Stock options granted under the Company's 2013 Incentive Plan. The options become exercisable based on the following vesting schedule: twenty-five percent (25%) on the first anniversary of the grant date and an additional twelve and one-half percent (12.5%) vest on the six month anniversary of the first anniversary date and each six month anniversary date thereafter through the fourth anniversary of the date of grant.