EXHIBIT 31.1
Section 302 Certification
I, William H. Lewis, Chief Executive Officer of Insmed Incorporated, certify that:
(1) I have reviewed this annual report on Form 10-K/A of Insmed Incorporated;
(2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
Date: March 30, 2015 | By: | /s/ William H. Lewis |
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| William H. Lewis |
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| Chief Executive Officer (Principal Executive Officer) and Director |
