SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
X	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* 5AM Ventures IV, L.P. (Last) (First) (Middle) C/O 5AM VENTURES 501 SECOND STREET, SUITE 350 (Street) SAN FRANCISCO CA 94107 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol IDEAYA Biosciences, Inc. [ IDYA ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below) Former 10% holder
	3. Date of Earliest Transaction (Month/Day/Year) 11/11/2020
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	11/11/2020		S		657,117	D	$13.66(1)	2,187,428	I	See footnote(2)
Common Stock	11/11/2020		S		27,379	D	$13.66(1)	91,142	I	See footnote(3)
Common Stock	11/11/2020		S		115,504	D	$13.66(1)	384,496	I	See footnote(4)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person* 5AM Ventures IV, L.P. (Last) (First) (Middle) C/O 5AM VENTURES 501 SECOND STREET, SUITE 350 (Street) SAN FRANCISCO CA 94107 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below) Former 10% holder

1. Name and Address of Reporting Person* 5AM Co-Investors IV, L.P. (Last) (First) (Middle) C/O 5AM VENTURES 501 SECOND STREET, SUITE 350 (Street) SAN FRANCISCO CA 94107 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below) Former 10% holder

1. Name and Address of Reporting Person* 5AM Partners IV, LLC (Last) (First) (Middle) C/O 5AM VENTURES 501 SECOND STREET, SUITE 350 (Street) SAN FRANCISCO CA 94107 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below) Former 10% holder

1. Name and Address of Reporting Person* 5AM Opportunities I, L.P. (Last) (First) (Middle) C/O 5AM VENTURES 501 SECOND STREET, SUITE 350 (Street) SAN FRANCISCO CA 94107 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below) Former 10% holder

1. Name and Address of Reporting Person* 5AM Opportunities I (GP), LLC (Last) (First) (Middle) C/O 5AM VENTURES 501 SECOND STREET, SUITE 350 (Street) SAN FRANCISCO CA 94107 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below) Former 10% holder

1. Name and Address of Reporting Person* DIEKMAN JOHN D (Last) (First) (Middle) C/O 5AM VENTURES 501 SECOND STREET, SUITE 350 (Street) SAN FRANCISCO CA 94107 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below) Former 10% holder

1. Name and Address of Reporting Person* Schwab Andrew J. (Last) (First) (Middle) C/O 5AM VENTURES 501 SECOND STREET, SUITE 350 (Street) SAN FRANCISCO CA 94107 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below) Former 10% holder

1. Name and Address of Reporting Person* ROCKLAGE SCOTT M (Last) (First) (Middle) C/O 5AM VENTURES 501 SECOND STREET, SUITE 350 (Street) SAN FRANCISCO CA 94107 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below) Former 10% holder

Explanation of Responses:

1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.50 to $13.75 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

2. The shares are held by 5AM Ventures IV, L.P. ("Ventures IV"). 5AM Partners IV, LLC ("Partners IV") is the sole general partner of Ventures IV. Dr. John Diekman, Andrew J. Schwab and Dr. Scott M. Rocklage, are the managing members of Partners IV, and have shared voting and investment power over the shares beneficially owned by Ventures IV. Each of Partners IV, Dr. Diekman, Mr. Schwab, and Dr. Rocklage disclaims beneficial ownership of such shares except to the extent of its or their pecuniary interest therein.

3. The shares are held by 5AM Co-Investors IV, L.P. ("Co-Investors IV" and, collectively with Ventures IV, the "5AM IV Funds"). Partners IV is the sole general partner of Co-Investors IV. Dr. John Diekman, Andrew J. Schwab and Dr. Scott M. Rocklage, are the managing members of Partners IV, and have shared voting and investment power over the shares beneficially owned by Co-Investors IV. Each of Partners IV, Dr. Diekman, Mr. Schwab, and Dr. Rocklage disclaims beneficial ownership of such shares except to the extent of its or their pecuniary interest therein.

4. The shares are held by 5AM Opportunities I, L.P. ("Opportunities I"), which is under common control with the 5AM IV Funds. The 5AM IV Funds and Opportunities I expressly disclaim status as a "group" for purposes of this Form 4. 5AM Opportunities I (GP), LLC ("Opportunities I GP") is the sole general partner of Opportunities I. Dr. Kush Parmar and Andrew J. Schwab are the managing members of Opportunities I GP, and have shared voting and investment power over the shares beneficially owned by Opportunities I. Each of Opportunities I GP and Mr. Schwab disclaims beneficial ownership of such shares except to the extent of its or his pecuniary interest therein.

	5AM VENTURES IV, L.P. By: 5AM Partners IV, LLC, its General Partner By: /s/ Scott M. Rocklage Managing Member	11/13/2020
	5AM CO-INVESTORS IV, L.P. By: 5AM Partners IV, LLC, its General Partner By: /s/ Scott M. Rocklage Managing Member	11/13/2020
	5AM PARTNERS IV, LLC By: /s/ Scott M. Rocklage Managing Member	11/13/2020
	5AM OPPORTUNITIES I, L.P. By: 5AM Opportunities I (GP), LLC, its General Partner By: /s/ Kush M. Parmar Managing Member	11/13/2020
	5AM OPPORTUNITIES I (GP), LLC By: /s/ Kush M. Parmar Managing Member	11/13/2020
	/s/ John Diekman	11/13/2020
	/s/ Andrew J. Schwab	11/13/2020
	/s/ Scott M. Rocklage	11/13/2020
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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