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<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;">&nbsp;</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">As filed with the Securities and Exchange Commission on March 24, 2020 </p>
<p style="text-align:right;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Registration No.&#160;333-&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</p>
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<p style="text-align:center;margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:18pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">UNITED STATES </p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:18pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">SECURITIES AND EXCHANGE COMMISSION </p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:12pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Washington, D.C. 20549 </p>
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<p style="text-align:center;margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:18pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">FORM S-8</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:18pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">REGISTRATION STATEMENT </p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-style:italic;font-size:12pt;font-family:Times New Roman;text-transform:none;font-variant: normal;">UNDER </p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-style:italic;font-size:12pt;font-family:Times New Roman;text-transform:none;font-variant: normal;">THE SECURITIES ACT OF 1933 </p>
<p style="text-align:center;border-bottom:Solid 1pt #000000;padding-bottom:0pt;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;">&nbsp;</p>
<p style="text-align:center;margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:24pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">IDEAYA Biosciences, Inc. </p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">(Exact name of Registrant as specified in its charter) </p>
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<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Delaware</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">47-4268251</p></td>
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<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">(State or other jurisdiction of</p>
<p style="text-align:center;margin-bottom:1pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">incorporation or organization)</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:8pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">(I.R.S. Employer</p>
<p style="text-align:center;margin-bottom:1pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Identification Number)</p></td>
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<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">7000 Shoreline Court, Suite 350</p>
<p style="text-align:center;margin-bottom:1pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">South San Francisco, California </p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">94080</p></td>
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<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">(Address of Principal Executive Offices)</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:8pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">(Zip Code)</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:6pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p>
<p style="text-align:center;border-bottom:Solid 1pt #000000;padding-bottom:0pt;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:12pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p>
<p style="text-align:center;margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">2019 Incentive Award Plan </p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">2019 Employee Stock Purchase Plan </p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">(Full Title of the Plan) </p>
<p style="text-align:center;border-bottom:Solid 1pt #000000;padding-bottom:0pt;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:12pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p>
<p style="text-align:center;margin-top:6pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Yujiro Hata</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">President and Chief Executive Officer </p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">IDEAYA Biosciences, Inc. </p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">7000 Shoreline Court, Suite 350</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">South San Francisco, California 94080</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">(650) 443-6209 </p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">(Name, address, including zip code, and telephone number, including area code, of agent for service) </p>
<p style="text-align:center;border-bottom:Solid 1pt #000000;padding-bottom:0pt;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:12pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p>
<p style="text-align:center;margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-style:italic;font-size:10pt;font-family:Times New Roman;text-transform:none;font-variant: normal;">Copies to: </p>
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<p style="text-align:center;margin-bottom:1pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;;font-size:10pt;">&nbsp;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:24.62%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Mark V. Roeder, Esq.</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Benjamin A. Potter, Esq.</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Latham&#160;&amp; Watkins LLP</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">140 Scott Drive</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Menlo Park, California 94025</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Telephone: (650) 328-4600</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Facsimile: (650) 463-2600</p></td>
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<p style="text-align:center;margin-bottom:1pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;;font-size:10pt;">&nbsp;</p></td>
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<p style="text-align:center;margin-bottom:1pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;;font-size:10pt;">&nbsp;</p></td>
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<p style="margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;">&nbsp;</p>
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<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;">&nbsp;</p>
<p style="margin-top:6pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><a name="_AEIOULastRenderedPageBreakAEIOU2"></a><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a </font><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">smaller reporting company. See the definitions of &#8220;large accelerated filer,&#8221; &#8220;accelerated filer,&#8221; &#8220;smaller reporting company&#8221; and &#8220;emerging growth company&#8221; in Rule 12b-2 of the Exchange Act. </font></p>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:6pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Large&#160;accelerated&#160;filer</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#9744;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Accelerated&#160;filer</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#9744;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Smaller&#160;reporting&#160;company</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#9746;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Emerging&#160;growth&#160;company</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#9746;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:6pt;">&nbsp;</p>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section&#160;7(a)(2)(B) of the Securities Act. <font style="font-family:Segoe UI Symbol;">&#9746;</font></p>
<p style="text-align:center;border-bottom:Solid 1pt #000000;padding-bottom:0pt;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:12pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p>
<p style="text-align:center;margin-top:6pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">CALCULATION OF REGISTRATION FEE </p>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:6pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:0.62%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
<td valign="middle"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:15%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
<td valign="middle"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:12.46%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:0.54%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
<td valign="middle"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:14.28%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:0.54%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
<td valign="middle"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:12.54%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
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<p style="border-top:Solid 0.75pt #000000;padding-top:0pt;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:1pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<tr>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto; border-top:solid 0.75pt #000000;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Title of Each Class&#160;of</p>
<p style="text-align:center;margin-bottom:1pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Securities to be Registered</p></td>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto; border-top:solid 0.75pt #000000; border-left:solid 0.75pt #000000;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:8pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto; border-top:solid 0.75pt #000000;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Amount</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">to&#160;be</p>
<p style="text-align:center;margin-bottom:1pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Registered<sup style="font-size:85%;line-height:120%;vertical-align:top">(1)</sup></p></td>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto; border-top:solid 0.75pt #000000; border-left:solid 0.75pt #000000;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:8pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto; border-top:solid 0.75pt #000000;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Proposed</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Maximum</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Offering&#160;Price</p>
<p style="text-align:center;margin-bottom:1pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Per&#160;Share<sup style="font-size:85%;line-height:120%;vertical-align:top">(2)</sup></p></td>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto; border-top:solid 0.75pt #000000; border-left:solid 0.75pt #000000;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:8pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto; border-top:solid 0.75pt #000000;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Proposed</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Maximum</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Aggregate&#160;Offering</p>
<p style="text-align:center;margin-bottom:1pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Price<sup style="font-size:85%;line-height:120%;vertical-align:top">(2)</sup></p></td>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto; border-top:solid 0.75pt #000000; border-left:solid 0.75pt #000000;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:8pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto; border-top:solid 0.75pt #000000;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Amount&#160;of</p>
<p style="text-align:center;margin-bottom:1pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Registration&#160;Fee</p></td>
</tr>
<tr>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto; border-top:solid 0.75pt #000000;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:10pt;;text-indent:-10pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Shares of common stock, par value $0.0001 per share, of IDEAYA Biosciences, Inc.</p></td>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto; border-top:solid 0.75pt #000000; border-left:solid 0.75pt #000000;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto; border-top:solid 0.75pt #000000;white-space:nowrap;">
<p style="text-align:center;margin-bottom:1pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">1,044,352<sup style="font-size:85%;line-height:120%;vertical-align:top"> </sup><sup style="font-size:85%;line-height:120%;vertical-align:top">(</sup><sup style="font-size:85%;line-height:120%;vertical-align:top">3</sup><sup style="font-size:85%;line-height:120%;vertical-align:top">)</sup></p></td>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto; border-top:solid 0.75pt #000000; border-left:solid 0.75pt #000000;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;">&nbsp;</p></td>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto; border-top:solid 0.75pt #000000;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">$3.423<sup style="font-size:85%;line-height:120%;vertical-align:top">(</sup><sup style="font-size:85%;line-height:120%;vertical-align:top">2)</sup></p></td>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto; border-top:solid 0.75pt #000000; border-left:solid 0.75pt #000000;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;">&nbsp;</p></td>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto; border-top:solid 0.75pt #000000;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">$3,574,817</p></td>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto; border-top:solid 0.75pt #000000; border-left:solid 0.75pt #000000;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;">&nbsp;</p></td>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto; border-top:solid 0.75pt #000000;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">$465</p></td>
</tr>
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<td colspan="9" valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="border-top:Solid 0.75pt #000000;padding-top:0pt;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:1pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
</tr>
<tr>
<td colspan="9" valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="border-top:Solid 0.75pt #000000;padding-top:0pt;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:1pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
</tr>
</table></div>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:6pt;">&nbsp;</p>
<div align="left">
<table border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse; width:100%;">
<tr>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:4%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">(1)</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Pursuant to Rule 416(a) under the Securities Act of 1933, as amended (the &#8220;Securities Act&#8221;), this registration statement shall also cover any additional shares of the Registrant&#8217;s common stock that become issuable under the Registrant&#8217;s 2019 Incentive Award Plan (the &#8220;2019 Plan&#8221;) and the Registrant&#8217;s 2019 Employee Stock Purchase Plan (the &#8220;ESPP&#8221;) by reason of any stock dividend, stock split, recapitalization or similar transaction effected without the Registrant&#8217;s receipt of consideration which would increase the number of outstanding shares of common stock. </p></td>
</tr>
</table></div>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:6pt;">&nbsp;</p>
<div align="left">
<table border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse; width:100%;">
<tr>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:4%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">(2)</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Estimated solely for the purpose of calculating the amount of the registration fee pursuant to Rule 457(h) and Rule 457(c) promulgated under the Securities Act. The offering price per share and the aggregate offering price for shares reserved for future issuance under the 2019 Plan and the ESPP are based on the average of the high and the low price of the Registrant&#8217;s common stock as reported on the Nasdaq Global Market on March 19, 2020. </p></td>
</tr>
</table></div>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:6pt;">&nbsp;</p>
<div align="left">
<table border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse; width:100%;">
<tr>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:4%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">(3)</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Represents 813,578 shares of the Registrant&#8217;s common stock that are available for issuance pursuant to the 2019 Plan and 203,394 shares of the Registrant&#8217;s common stock that are available for issuance pursuant to the ESPP, in each case, pursuant to automatic increases effective January 1, 2020. Also includes 27,380 shares added to the reserve of the 2019 Plan pursuant to its terms upon repurchase of shares at the original exercise price originally issued under the Registrant&#8217;s 2015 Equity Incentive Plan.&nbsp;&nbsp;Shares available for issuance under the 2019 Plan and the ESPP were previously registered on a registration statement on Form S-8 filed with the Securities and Exchange Commission (the &#8220;SEC&#8221;) on May 28, 2019 (Registration No. 333-231784). </p></td>
</tr>
</table></div>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:6pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:6pt;">&nbsp;</p>
<p style="text-align:center;border-bottom:Solid 1pt #000000;padding-bottom:0pt;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:6pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p>
<p style="text-align:center;margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Proposed sale to take place as soon after the effective date of the </p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">registration statement as awards under the plans are exercised and/or vest. </p>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0.16%;text-indent:0%;font-family:Times New Roman;font-size:10pt;">&nbsp;</p>
<p style="margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;">&nbsp;</p>
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<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;">&nbsp;</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;"><a name="_AEIOULastRenderedPageBreakAEIOU3"></a><font style="font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">PART I</font></p>
<p style="text-align:center;margin-top:6pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS</p>
<p style="margin-top:6pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The information called for in Part I of Form S-8 is not being filed with or included in this Form S-8 (by incorporation by reference or otherwise) in accordance with the rules and regulations of the Securities and Exchange Commission (the &#8220;Commission&#8221;).</p>
<p style="text-align:center;margin-top:18pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">PART II </p>
<p style="text-align:center;margin-top:6pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">INFORMATION REQUIRED IN THE REGISTRATION STATEMENT </p>
<p style="margin-top:6pt;margin-bottom:0pt;text-indent:0%;font-style:italic;font-size:10pt;font-family:Times New Roman;font-weight:normal;text-transform:none;font-variant: normal;">In this Registration Statement, IDEAYA Biosciences, Inc. is sometimes referred to as &#8220;Registrant,&#8221; &#8220;we,&#8221; &#8220;us&#8221; or &#8220;our.&#8221;</p>
<p style="text-align:center;margin-top:18pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">REGISTRATION OF ADDITIONAL SECURITIES</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">PURSUANT TO GENERAL INSTRUCTION E OF FORM S-8</p>
<p style="margin-top:6pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">This Registration Statement on Form S-8 is filed by Registrant, relating to (a) 813,578 shares of its common stock, $0.0001 par value (the &#8220;Common Stock&#8221;), issuable to eligible employees of Registrant under the 2019 Plan and (b) 203,394 shares of Common Stock issuable to eligible employees of Registrant under the ESPP.  On May 28, 2019, Registrant filed with the Commission a Registration Statement on Form S-8, Registration No. 333-231784 (the &#8220;Prior Registration Statement&#8221;), relating to shares of Common Stock issuable to eligible employees of Registrant under the 2019 Plan and the ESPP. The Prior Registration Statement is currently effective. This Registration Statement relates to securities of the same class as those to which the Prior Registration Statement relates and is submitted in accordance with Section E of the General Instructions to Form S-8 regarding Registration of Additional Securities. Pursuant to Section E of the General Instructions to Form S-8, the contents of the Prior Registration Statement is incorporated herein by reference and made part of this Registration Statement, except as amended hereby. <font style="margin-left:36pt;"></font></p>
<p style="margin-top:18pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Item&#160;3. Incorporation of Documents by Reference. </p>
<p style="margin-top:6pt;margin-bottom:0pt;text-indent:0%;color:#000000;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The following documents filed with the Commission by the Registrant are incorporated by reference in this Registration Statement:</p>
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<p style="margin-top:6pt;margin-bottom:0pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
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<p style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">(a)</font></p></td>
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<p style="margin-top:6pt;margin-bottom:0pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;font-family:Times New Roman;font-size:10pt;"><a href="http://www.sec.gov/Archives/edgar/data/1676725/000156459020012501/idya-10k_20191231.htm"><font style="text-decoration:underline;">Registrant&#8217;s Annual Report on Form 10-K for the fiscal year ended December 31, 2019, filed with the Commission on March 24, 2020, including all material incorporated by reference therein;</font></a><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"> </font></p></td></tr></table></div>
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<p style="margin-top:6pt;margin-bottom:0pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
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<p style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">(b)</font></p></td>
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<p style="margin-top:6pt;margin-bottom:0pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;font-family:Times New Roman;font-size:10pt;"><a href="http://www.sec.gov/Archives/edgar/data/1676725/000119312519150689/d749987d8a12b.htm"><font style="text-decoration:underline;">The description of the Registrant&#8217;s common stock contained in the Registrant&#8217;s registration statement on Form 8-A (Registration No.&#160;001-38915), filed by the Registrant with the SEC under Section&#160;12(b) of the Securities Exchange Act of 1934, as amended (the &#8220;Exchange Act&#8221;), on May 17, 2019 including any amendments or reports filed for the purpose of updating such description.</font></a><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"> </font></p></td></tr></table></div>
<p style="margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;">&nbsp;</p>
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<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;">&nbsp;</p>
<p style="margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><a name="_AEIOULastRenderedPageBreakAEIOU4"></a><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">All documents that the Registrant subsequently files pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act prior to the filing of a post-effective amendment to the registration statement which indicates that all of the shares of common </font><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">stock offered have been sold or which deregisters all of such shares then remaining unsold, shall be deemed to be incorporated by reference in this registration statement and to be a part hereof from the date of the filing of such documents; except as to a</font><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">ny portion of any future annual or quarterly report to stockholders or document or current report furnished under current Items 2.02 or 7.01 of Form 8-K, and exhibits furnished on such form that relate to such items, that is not deemed filed under such pro</font><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">visions. For the purposes of this registration statement, any statement contained in a document incorporated or deemed to be incorporated by reference herein shall be deemed to be modified or superseded to the extent that a statement contained herein or in</font><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"> any other subsequently filed document which also is or is deemed to be incorporated by reference herein modifies or supersedes such statement. Any such statement so modified or superseded shall not be deemed, except as so modified or superseded, to consti</font><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">tute a part of this registration statement. </font></p>
<p style="margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Under no circumstances will any information filed under current Items 2.02 or 7.01 of Form 8-K, and exhibits furnished on such form that relate to such items, be deemed incorporated herein by reference unless such Form 8-K expressly provides to the contrary. </p>
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0.16%;text-indent:0%;font-family:Times New Roman;font-size:10pt;">&nbsp;</p>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Exhibit Index <font style="font-size:12pt;font-weight:normal;">&#160;</font></p>
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<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Number</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:8pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:8pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
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<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Incorporated by Reference</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:8pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
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<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Filed</p></td>
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<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Exhibit Description</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:8pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
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<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Form</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:8pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
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<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Date</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:8pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
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<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Number</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:8pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
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<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Herewith</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">5.1</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><a href="idya-ex51_131.htm"><font style="text-decoration:underline;">Opinion of Latham&#160;&amp; Watkins&#160;LLP.</font></a></p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
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<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">X</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">23.1</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><a href="idya-ex231_75.htm"><font style="text-decoration:underline;">Consent of Independent Registered Public Accounting Firm.</font></a><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"> </font></p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">X</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">23.2</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><a href="idya-ex51_131.htm"><font style="text-decoration:underline;">Consent of Latham&#160;&amp; Watkins&#160;LLP (included in Exhibit&#160;5.1).</font></a><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"> </font></p></td>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:1.28%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">X</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">24.1</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><a href="#POWER_ATTORNEY"><font style="text-decoration:underline;">Power of Attorney. Reference is made to the signature page to the Registration Statement.</font></a></p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:1.28%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">X</p></td>
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<tr>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">99.1#</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><a href="http://www.sec.gov/Archives/edgar/data/1676725/000119312519158497/d732234dex992a.htm"><font style="text-decoration:underline;">2019 Incentive Award Plan.</font></a><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"> </font></p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">S-8</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">5-28-19</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
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<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">99.2(a)</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
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<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:13.44%;white-space:nowrap;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">99.2#</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><a href="http://www.sec.gov/Archives/edgar/data/1676725/000119312519158497/d732234dex993.htm"><font style="text-decoration:underline;">2019 Employee Stock Purchase Plan.</font></a><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"> </font></p></td>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">S-8</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">5-28-19</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">99.3</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&nbsp;</p></td>
</tr>
</table></div>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:12pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p>
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<tr>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:2%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">#</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Indicates management contract or compensatory plan. </p></td>
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<p style="margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;">&nbsp;</p>
<hr style="page-break-after:always;width:100%;">
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;">&nbsp;</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;"><a name="_AEIOULastRenderedPageBreakAEIOU5"></a><font style="font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">SIGNATURES </font></p>
<p style="margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Pursuant to the requirements of the Securities Act of 1933, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in South San Francisco, California, on this twenty-fourth day of March, 2020. </p>
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<td colspan="3" valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;text-align:left;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">IDEAYA Biosciences, Inc.</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;text-align:left;">&nbsp;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;text-align:left;">&nbsp;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;text-align:left;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">By:</p></td>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto; border-bottom:solid 0.75pt #000000;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;text-align:left;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto; border-bottom:solid 0.75pt #000000;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;text-align:left;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">/s/ Yujiro Hata</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;text-align:left;">&nbsp;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;text-align:left;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;text-align:left;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Yujiro Hata</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;text-align:left;">&nbsp;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;text-align:left;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:-14.85pt;;text-indent:0pt;;font-style:italic;font-size:10pt;font-family:Times New Roman;font-weight:normal;text-transform:none;font-variant: normal;">President and Chief Executive Officer</p></td>
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</table></div>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;;font-size:10pt;">&nbsp;</p>
<p style="text-align:center;margin-top:8pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;"><a name="POWER_ATTORNEY"></a><a name="POWER_ATTORNEY"></a>POWER OF ATTORNEY </p>
<p style="margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints Yujiro Hata and Paul Stone, and each of them acting individually, as his true and lawful attorneys-in-fact and agents, each with full power of substitution, for him in any and all capacities, to sign any and all amendments to this Registration Statement, including post-effective amendments or any abbreviated registration statement and any amendments thereto filed pursuant to Rule 462(b) increasing the number of securities for which registration is sought, and to file the same, with all exhibits thereto and other documents in connection therewith, with the SEC, granting unto said attorneys-in-fact and agents, with full power of each to act alone, full power and authority to do and perform each and every act and thing requisite and necessary to be done in connection therewith, as fully for all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or his or their substitute or substitutes, may lawfully do or cause to be done by virtue hereof. </p>
<p style="margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Pursuant to the requirements of the Securities Act, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated. </p>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:12pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p>
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<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:25%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Signature</p></td>
<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:55%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Title</p></td>
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<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Date</p></td>
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<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:6pt;">&nbsp;</p></td>
<td valign="middle"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:55%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:6pt;">&nbsp;</p></td>
<td valign="middle"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:20%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:6pt;">&nbsp;</p></td>
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<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:25%; border-bottom:solid 0.75pt #000000;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">/s/ Yujiro Hata</p></td>
<td rowspan="2" valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;width:55%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:7.65pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">President,&#160;Chief&#160;Executive&#160;Officer&#160;and&#160;Director</p>
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:7.65pt;;text-indent:0pt;;font-style:italic;font-size:10pt;font-family:Times New Roman;font-weight:normal;text-transform:none;font-variant: normal;">(Principal Executive Officer)</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;width:20%; border-bottom:solid 0.75pt transparent;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">March 24, 2020</p></td>
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<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:25%; border-top:solid 0.75pt #000000;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Yujiro Hata</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:20%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:6pt;">&nbsp;</p></td>
<td valign="middle"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:55%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:7.65pt;;text-indent:0pt;;font-size:6pt;">&nbsp;</p></td>
<td valign="middle"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:20%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:6pt;">&nbsp;</p></td>
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<td valign="bottom"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:25%; border-bottom:solid 0.75pt #000000;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">/s/ Paul Stone, J.D.</p></td>
<td rowspan="2" valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;width:55%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:7.65pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Chief Financial Officer <font style="font-style:italic;">(Principal Financial and </font></p>
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:7.65pt;;text-indent:0pt;;font-style:italic;font-size:10pt;font-family:Times New Roman;font-weight:normal;text-transform:none;font-variant: normal;">Accounting Officer)</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;width:20%; border-bottom:solid 0.75pt transparent;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">March 24, 2020</p></td>
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<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:25%; border-top:solid 0.75pt #000000;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Paul Stone, J.D.</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:20%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<td valign="middle"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:25%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:6pt;">&nbsp;</p></td>
<td valign="middle"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:55%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:7.65pt;;text-indent:0pt;;font-size:6pt;">&nbsp;</p></td>
<td valign="middle"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:20%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:6pt;">&nbsp;</p></td>
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<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:25%; border-bottom:solid 0.75pt #000000;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">/s/ John Diekman, Ph.D.</p></td>
<td rowspan="2" valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;width:55%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:7.65pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Chairman of the Board of Directors</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;width:20%; border-bottom:solid 0.75pt transparent;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">March 24, 2020</p></td>
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<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:25%; border-top:solid 0.75pt #000000;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">John Diekman, Ph.D.</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:20%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<td valign="middle"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:25%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:6pt;">&nbsp;</p></td>
<td valign="middle"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:55%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:7.65pt;;text-indent:0pt;;font-size:6pt;">&nbsp;</p></td>
<td valign="middle"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:20%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:6pt;">&nbsp;</p></td>
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<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:25%; border-bottom:solid 0.75pt #000000;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">/s/ Scott Morrison</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:7.65pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Director</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;width:20%; border-bottom:solid 0.75pt transparent;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">March 24, 2020</p></td>
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<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:25%; border-top:solid 0.75pt #000000;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Scott Morrison</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:55%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:7.65pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:6pt;">&nbsp;</p></td>
<td valign="middle"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:55%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:7.65pt;;text-indent:0pt;;font-size:6pt;">&nbsp;</p></td>
<td valign="middle"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:20%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:6pt;">&nbsp;</p></td>
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<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:25%; border-bottom:solid 0.75pt #000000;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">/s/ Terry Rosen, Ph.D.</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;width:55%; border-bottom:solid 0.75pt transparent;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:7.65pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Director</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;width:20%; border-bottom:solid 0.75pt transparent;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">March 24, 2020</p></td>
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<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:25%; border-top:solid 0.75pt #000000;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Terry Rosen, Ph.D.</p></td>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:55%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:7.65pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:6pt;">&nbsp;</p></td>
<td valign="middle"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:55%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:7.65pt;;text-indent:0pt;;font-size:6pt;">&nbsp;</p></td>
<td valign="middle"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:20%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:6pt;">&nbsp;</p></td>
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<tr>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:25%; border-bottom:solid 0.75pt #000000;">
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<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;width:55%; border-bottom:solid 0.75pt transparent;">
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<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;width:20%; border-bottom:solid 0.75pt transparent;">
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</tr>
<tr>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:25%; border-top:solid 0.75pt #000000;">
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<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:55%;">
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<tr>
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<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:55%;">
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</tr>
<tr>
<td valign="middle"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:25%;">
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<td valign="middle"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:55%;">
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<td valign="middle"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:20%;">
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</tr>
<tr>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:25%; border-bottom:solid 0.75pt #000000;">
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<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;width:55%; border-bottom:solid 0.75pt transparent;">
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<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;width:20%; border-bottom:solid 0.75pt transparent;">
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</tr>
<tr>
<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:25%; border-top:solid 0.75pt #000000;">
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<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:55%;">
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<tr>
<td valign="middle"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:25%;">
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<td valign="middle"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:55%;">
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<td valign="middle"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:20%;">
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<td valign="top"  style="padding-left:0pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:25%; border-bottom:solid 0.75pt #000000;">
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idya-s8.htm
As filed with the Securities and Exchange Commission on March 24, 2020
Registration No. 333-
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM S-8
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933
IDEAYA Biosciences, Inc.
(Exact name of Registrant as specified in its charter)
Delaware
47-4268251
(State or other jurisdiction of
incorporation or organization)
(I.R.S. Employer
Identification Number)
7000 Shoreline Court, Suite 350
South San Francisco, California
94080
(Address of Principal Executive Offices)
(Zip Code)
2019 Incentive Award Plan
2019 Employee Stock Purchase Plan
(Full Title of the Plan)
Yujiro Hata
President and Chief Executive Officer
IDEAYA Biosciences, Inc.
7000 Shoreline Court, Suite 350
South San Francisco, California 94080
(650) 443-6209
(Name, address, including zip code, and telephone number, including area code, of agent for service)
Copies to:
Mark V. Roeder, Esq.
Benjamin A. Potter, Esq.
Latham & Watkins LLP
140 Scott Drive
Menlo Park, California 94025
Telephone: (650) 328-4600
Facsimile: (650) 463-2600
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a
smaller reporting company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company" and "emerging growth company" in Rule 12b-2 of the Exchange Act.
Large accelerated filer
☐
Accelerated filer
☐
Non-accelerated filer
☒
Smaller reporting company
☒
Emerging growth company
☒
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act.
☒
CALCULATION OF REGISTRATION FEE
Title of Each Class of
Securities to be Registered
Amount
to be
Registered
(1)
Proposed
Maximum
Offering Price
Per Share
(2)
Proposed
Maximum
Aggregate Offering
Price
(2)
Amount of
Registration Fee
Shares of common stock, par value $0.0001 per share, of IDEAYA Biosciences, Inc.
1,044,352
(
3
)
$3.423
(
2)
$3,574,817
$465
(1)
Pursuant to Rule 416(a) under the Securities Act of 1933, as amended (the "Securities Act"), this registration statement shall also cover any additional shares of the Registrant's common stock that become issuable under the Registrant's 2019 Incentive Award Plan (the "2019 Plan") and the Registrant's 2019 Employee Stock Purchase Plan (the "ESPP") by reason of any stock dividend, stock split, recapitalization or similar transaction effected without the Registrant's receipt of consideration which would increase the number of outstanding shares of common stock.
(2)
Estimated solely for the purpose of calculating the amount of the registration fee pursuant to Rule 457(h) and Rule 457(c) promulgated under the Securities Act. The offering price per share and the aggregate offering price for shares reserved for future issuance under the 2019 Plan and the ESPP are based on the average of the high and the low price of the Registrant's common stock as reported on the Nasdaq Global Market on March 19, 2020.
(3)
Represents 813,578 shares of the Registrant's common stock that are available for issuance pursuant to the 2019 Plan and 203,394 shares of the Registrant's common stock that are available for issuance pursuant to the ESPP, in each case, pursuant to automatic increases effective January 1, 2020. Also includes 27,380 shares added to the reserve of the 2019 Plan pursuant to its terms upon repurchase of shares at the original exercise price originally issued under the Registrant's 2015 Equity Incentive Plan.  Shares available for issuance under the 2019 Plan and the ESPP were previously registered on a registration statement on Form S-8 filed with the Securities and Exchange Commission (the "SEC") on May 28, 2019 (Registration No. 333-231784).
Proposed sale to take place as soon after the effective date of the
registration statement as awards under the plans are exercised and/or vest.
PART I
INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS
The information called for in Part I of Form S-8 is not being filed with or included in this Form S-8 (by incorporation by reference or otherwise) in accordance with the rules and regulations of the Securities and Exchange Commission (the "Commission").
PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
In this Registration Statement, IDEAYA Biosciences, Inc. is sometimes referred to as "Registrant," "we," "us" or "our."
REGISTRATION OF ADDITIONAL SECURITIES
PURSUANT TO GENERAL INSTRUCTION E OF FORM S-8
This Registration Statement on Form S-8 is filed by Registrant, relating to (a) 813,578 shares of its common stock, $0.0001 par value (the "Common Stock"), issuable to eligible employees of Registrant under the 2019 Plan and (b) 203,394 shares of Common Stock issuable to eligible employees of Registrant under the ESPP.  On May 28, 2019, Registrant filed with the Commission a Registration Statement on Form S-8, Registration No. 333-231784 (the "Prior Registration Statement"), relating to shares of Common Stock issuable to eligible employees of Registrant under the 2019 Plan and the ESPP. The Prior Registration Statement is currently effective. This Registration Statement relates to securities of the same class as those to which the Prior Registration Statement relates and is submitted in accordance with Section E of the General Instructions to Form S-8 regarding Registration of Additional Securities. Pursuant to Section E of the General Instructions to Form S-8, the contents of the Prior Registration Statement is incorporated herein by reference and made part of this Registration Statement, except as amended hereby.
Item 3. Incorporation of Documents by Reference.
The following documents filed with the Commission by the Registrant are incorporated by reference in this Registration Statement:
(a)
Registrant's Annual Report on Form 10-K for the fiscal year ended December 31, 2019, filed with the Commission on March 24, 2020, including all material incorporated by reference therein;
(b)
The description of the Registrant's common stock contained in the Registrant's registration statement on Form 8-A (Registration No. 001-38915), filed by the Registrant with the SEC under Section 12(b) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), on May 17, 2019 including any amendments or reports filed for the purpose of updating such description.
All documents that the Registrant subsequently files pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act prior to the filing of a post-effective amendment to the registration statement which indicates that all of the shares of common
stock offered have been sold or which deregisters all of such shares then remaining unsold, shall be deemed to be incorporated by reference in this registration statement and to be a part hereof from the date of the filing of such documents; except as to a
ny portion of any future annual or quarterly report to stockholders or document or current report furnished under current Items 2.02 or 7.01 of Form 8-K, and exhibits furnished on such form that relate to such items, that is not deemed filed under such pro
visions. For the purposes of this registration statement, any statement contained in a document incorporated or deemed to be incorporated by reference herein shall be deemed to be modified or superseded to the extent that a statement contained herein or in
any other subsequently filed document which also is or is deemed to be incorporated by reference herein modifies or supersedes such statement. Any such statement so modified or superseded shall not be deemed, except as so modified or superseded, to consti
tute a part of this registration statement.
Under no circumstances will any information filed under current Items 2.02 or 7.01 of Form 8-K, and exhibits furnished on such form that relate to such items, be deemed incorporated herein by reference unless such Form 8-K expressly provides to the contrary.
Exhibit Index
Exhibit
Number
Incorporated by Reference
Filed
Exhibit Description
Form
Date
Number
Herewith
5.1
Opinion of Latham & Watkins LLP.
X
23.1
Consent of Independent Registered Public Accounting Firm.
X
23.2
Consent of Latham & Watkins LLP (included in Exhibit 5.1).
X
24.1
Power of Attorney. Reference is made to the signature page to the Registration Statement.
X
99.1#
2019 Incentive Award Plan.
S-8
5-28-19
99.2(a)
99.2#
2019 Employee Stock Purchase Plan.
S-8
5-28-19
99.3
#
Indicates management contract or compensatory plan.
SIGNATURES
Pursuant to the requirements of the Securities Act of 1933, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in South San Francisco, California, on this twenty-fourth day of March, 2020.
IDEAYA Biosciences, Inc.
By:
/s/ Yujiro Hata
Yujiro Hata
President and Chief Executive Officer
POWER OF ATTORNEY
KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints Yujiro Hata and Paul Stone, and each of them acting individually, as his true and lawful attorneys-in-fact and agents, each with full power of substitution, for him in any and all capacities, to sign any and all amendments to this Registration Statement, including post-effective amendments or any abbreviated registration statement and any amendments thereto filed pursuant to Rule 462(b) increasing the number of securities for which registration is sought, and to file the same, with all exhibits thereto and other documents in connection therewith, with the SEC, granting unto said attorneys-in-fact and agents, with full power of each to act alone, full power and authority to do and perform each and every act and thing requisite and necessary to be done in connection therewith, as fully for all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or his or their substitute or substitutes, may lawfully do or cause to be done by virtue hereof.
Pursuant to the requirements of the Securities Act, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.
Signature
Title
Date
/s/ Yujiro Hata
President, Chief Executive Officer and Director
(Principal Executive Officer)
March 24, 2020
Yujiro Hata
/s/ Paul Stone, J.D.
Chief Financial Officer
(Principal Financial and
Accounting Officer)
March 24, 2020
Paul Stone, J.D.
/s/ John Diekman, Ph.D.
Chairman of the Board of Directors
March 24, 2020
John Diekman, Ph.D.
/s/ Scott Morrison
Director
March 24, 2020
Scott Morrison
/s/ Terry Rosen, Ph.D.
Director
March 24, 2020
Terry Rosen, Ph.D.
/s/ Thilo Schroeder, Ph.D.
Director
March 24, 2020
Thilo Schroeder, Ph.D.
/s/ Timothy Shannon, M.D.
Director
March 24, 2020
Timothy Shannon, M.D.
/s/ Jeffrey Stein, Ph.D.
Director
March 24, 2020
Jeffrey Stein, Ph.D.
/s/ Wendy Yarno
Director
March 24, 2020
Wendy Yarno