Exhibit 31.3
CERTIFICATION OF THE PRINCIPAL EXECUTIVE OFFICER
PURSUANT TO SECTION 302 OF
THE SARBANES-OXLEY ACT OF 2002
I, Sujal Shah, certify that:
| 1. | I have reviewed this Form10-K/A of CymaBay Theraepeutics, Inc.; and |
| 2. | Based on my knowledge, this annual 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: April 28, 2020
| By: | /s/ Sujal Shah | |
| Name: Sujal Shah | ||
| Title: President and Chief Executive Officer | ||
| (Principal Executive Officer) |
