Exhibit 31.1
CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO
RULES 13a-14(a) AND 15d-14(a) UNDER THE SECURITIES EXCHANGE ACT OF 1934,
AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002
I, Yujiro Hata, certify that:
| 1. | I have reviewed this Quarterly Report on Form 10-Q/A of IDEAYA Biosciences, 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. |
| Date: August 6, 2024 | By: | /s/ Yujiro Hata | ||||
| Yujiro Hata | ||||||
| President and Chief Executive Officer (Principal Executive Officer) |