Exhibit 31.1
CERTIFICATIONS
Chief Executive Officer
I, Paris Panayiotopoulos, certify that:
| 1. | I have reviewed this Amendment No. 1 to the Quarterly Report on Form 10-Q/A of ARIAD Pharmaceuticals, Inc.; and |
| 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. |
| By: | /s/ Paris Panayiotopoulos | |||||
| Paris Panayiotopoulos | ||||||
| Date: February 13, 2017 | President and Chief Executive Officer | |||||
| (Principal executive officer) |