<SEC-DOCUMENT>0001968582-23-000718.txt : 20231128
<SEC-HEADER>0001968582-23-000718.hdr.sgml : 20231128
<ACCEPTANCE-DATETIME>20231128175023
ACCESSION NUMBER:		0001968582-23-000718
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20231128
DATE AS OF CHANGE:		20231128

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			IDEAYA Biosciences, Inc.
		CENTRAL INDEX KEY:			0001676725
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				474268251
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	001-38915
		FILM NUMBER:		231447761

	BUSINESS ADDRESS:	
		STREET 1:		7000 SHORELINE COURT, SUITE 350
		CITY:			SOUTH SAN FRANCISCO
		STATE:			CA
		ZIP:			94080
		BUSINESS PHONE:		650-443-6209

	MAIL ADDRESS:	
		STREET 1:		7000 SHORELINE COURT, SUITE 350
		CITY:			SOUTH SAN FRANCISCO
		STATE:			CA
		ZIP:			94080

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Ideaya Biosciences, Inc.
		DATE OF NAME CHANGE:	20160609

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Stone Paul A.
		CENTRAL INDEX KEY:			0001777511

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		C/O IDEAYA BIOSCIENCES, INC.
		STREET 2:		7000 SHORELINE COURT, SUITE 350
		CITY:			SOUTH SAN FRANCISCO
		STATE:			CA
		ZIP:			94080
</SEC-HEADER>
<DOCUMENT>
<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
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<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
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    <submissionType>144</submissionType>
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      <filer>
        <filerCredentials>
          <cik>0001777511</cik>
          <ccc>XXXXXXXX</ccc>
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    <issuerInfo>
      <issuerCik>0001676725</issuerCik>
      <issuerName>IDEAYA Biosciences, Inc.</issuerName>
      <secFileNumber>001-38915</secFileNumber>
      <issuerAddress>
        <com:street1>7000 Shoreline Court</com:street1>
        <com:street2>Suite 350</com:street2>
        <com:city>San Francisco</com:city>
        <com:stateOrCountry>CA</com:stateOrCountry>
        <com:zipCode>94080</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>6504436209</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Paul Stone</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>J.P. Morgan Securities LLC</name>
        <address>
          <com:street1>390 Madison Avenue</com:street1>
          <com:street2>6th Floor</com:street2>
          <com:city>New York</com:city>
          <com:stateOrCountry>NY</com:stateOrCountry>
          <com:zipCode>10017</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>39450</noOfUnitsSold>
      <aggregateMarketValue>1183500</aggregateMarketValue>
      <noOfUnitsOutstanding>64459472</noOfUnitsOutstanding>
      <approxSaleDate>11/28/2023</approxSaleDate>
      <securitiesExchangeName>Nasdaq</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>11/28/2023</acquiredDate>
      <natureOfAcquisitionTransaction>Stock Option Exercise</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>39450</amountOfSecuritiesAcquired>
      <paymentDate>11/28/2023</paymentDate>
      <natureOfPayment>Cash</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Paul Stone</name>
        <address>
          <com:street1>C/o Issuer</com:street1>
          <com:street2>7000 Shoreline Court, Suite 350</com:street2>
          <com:city>San Francisco</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94080</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>11/27/2023</saleDate>
      <amountOfSecuritiesSold>46654</amountOfSecuritiesSold>
      <grossProceeds>1471933.7</grossProceeds>
    </securitiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>11/28/2023</noticeDate>
      <signature>/s/ J.P. Morgan Securities LLC as agent and attorney-in-fact for Paul Stone</signature>
    </noticeSignature>
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