Michael P. Dillon - Sep 2, 2021 Form 4 Insider Report for IDEAYA Biosciences, Inc. (IDYA)

Role: SVP, Chief Scientific Officer
Signature: /s/ Jason Throne, as Attorney-in-Fact for Michael P. Dillon
Stock symbol: IDYA
Transactions as of: Sep 2, 2021
Transactions value $: -$250,943
Form type: 4
Date filed: 9/7/2021, 06:48 PM
Previous filing: Aug 11, 2021
Next filing: Sep 9, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	IDYA	Common Stock	Sale	-$251K	-10K	-11.26%	$25.09	78.8K	Sep 2, 2021	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The transactions reported herein were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan.
F2	This transaction was executed in multiple trades in prices ranging from $24.95 to $25.25, inclusive. The price reported in Column 4 above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote.

Content

The transactions reported herein were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan.

This transaction was executed in multiple trades in prices ranging from $24.95 to $25.25, inclusive. The price reported in Column 4 above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote.