Joint Filing Agreement
Exhibit 99.1
The undersigned hereby agree that the Statement on Schedule 13G dated May 2, 2022 with respect to the Common Stock, $0.0001 par value per share of IDEAYA Biosciences, Inc., a Delaware corporation, and any further amendments thereto executed by each and any of the undersigned shall be filed on behalf of each of the undersigned pursuant to and in accordance with the provisions of Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended.
Dated: May 2, 2022
| BIOTECHNOLOGY VALUE FUND, L.P. | Biotechnology Value Trading Fund OS LP | |||
| By: | BVF I GP LLC., its general partner | |||
| By: | BVF Partners L.P., its investment manager | |||
| By: | /s/ Xxxx X. Xxxxxxx | By: | BVF Inc., its general partner | |
| Xxxx X. Xxxxxxx | ||||
| Chief Executive Officer | By: | /s/ Xxxx Xxxxxxx | ||
| Xxxx Xxxxxxx | ||||
| President | ||||
| BVF I GP LLC | ||||
| By: | /s/ Xxxx X. Xxxxxxx | BVF GP HOLDINGS LLC | ||
| Xxxx X. Xxxxxxx | ||||
| Chief Executive Officer | By: | /s/ Xxxx Xxxxxxx | ||
| Xxxx Xxxxxxx | ||||
| Chief Executive Officer | ||||
| BIOTECHNOLOGY VALUE FUND II, L.P. | ||||
| By: | BVF II GP LLC, its general partner | BVF PARTNERS L.P. | ||
| By: | /s/ Xxxx X. Xxxxxxx | By: | BVF Inc., its general partner | |
| Xxxx X. Xxxxxxx | ||||
| Chief Executive Officer | By: | /s/ Xxxx X. Xxxxxxx | ||
| Xxxx X. Xxxxxxx | ||||
| President | ||||
| BVF II GP LLC | ||||
| By: | /s/ Xxxx X. Xxxxxxx | BVF INC. | ||
| Xxxx X. Xxxxxxx | ||||
| Chief Executive Officer | By: | /s/ Xxxx Xxxxxxx | ||
| Xxxx Xxxxxxx | ||||
| President | ||||
| BVF PARTNERS OS LTD. | ||||
| By: | BVF Partners L.P., its sole member | /s/ Xxxx X. Xxxxxxx | ||
| By: | BVF Inc., its general partner | XXXX X. XXXXXXX | ||
| By: | /s/ Xxxx X. Xxxxxxx | |||
| Xxxx X. Xxxxxxx | ||||
| President | ||||
