Exhibit 31.2
CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002
I, Shalini Sharp, certify that:
1. | I have reviewed this Quarterly Report on Form 10-Q/A of Ultragenyx Pharmaceutical 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. |
Dated: December 9, 2016 |
| /s/ Shalini Sharp |
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| Shalini Sharp |
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| Executive Vice President and Chief Financial Officer |
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| (Principal Financial Officer) |