Exhibit 31.4
Certification of Principal Financial Officer
I, Paul W. Hoelscher, certify that:
| 1. | I have reviewed this Amendment No. 3 to the annual report on Form10-K/A of Horizon Pharma plc; 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. |
| Date: May 26, 2017 |
| /s/ Paul W. Hoelscher |
| Paul W. Hoelscher |
| Executive Vice President, Chief Financial Officer |
| (Principal Financial Officer) |
