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The price reported in Column 4 above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote."}],"balance_after":9303,"source":{"system":"sec-edgar","filing":"0001610717-23-000251","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1777511/000161071723000251/form4.xml","form_type":"4"}},{"id":1798747,"issuer":{"id":4069,"kind":"organization","name":"IDEAYA Biosciences, Inc.","symbol":"IDYA"},"owners":[{"id":110079,"kind":"person","name":"Stone Paul A.","position":1,"cik":"0001777511","reported_name":"Stone Paul A.","relationship":{"officer":true,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2023-08-23T18:31:54.000Z","date":"2023-08-21","kind":"sale","planned":true,"acquired":false,"shares":978,"price":26.4003,"value":25819.4934,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction reported herein was effected pursuant to the Reporting Person's Rule 10b5-1 trading plan, adopted on March 27, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades in prices ranging from $26.38 to $26.4175, inclusive. The price reported in Column 4 above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote."}],"balance_after":14303,"source":{"system":"sec-edgar","filing":"0001610717-23-000234","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1777511/000161071723000234/form4.xml","form_type":"4"}},{"id":1801978,"issuer":{"id":4069,"kind":"organization","name":"IDEAYA Biosciences, Inc.","symbol":"IDYA"},"owners":[{"id":110079,"kind":"person","name":"Stone Paul A.","position":1,"cik":"0001777511","reported_name":"Stone Paul A.","relationship":{"officer":true,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2023-08-18T18:33:59.000Z","date":"2023-08-18","kind":"sale","planned":true,"acquired":false,"shares":3822,"price":26.3789,"value":100820.1558,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported herein were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan, adopted on March 27, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades in prices ranging from $26.37 to $26.415, inclusive. The price reported in Column 4 above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote."}],"balance_after":15281,"source":{"system":"sec-edgar","filing":"0001610717-23-000233","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1777511/000161071723000233/form4.xml","form_type":"4"}},{"id":1801977,"issuer":{"id":4069,"kind":"organization","name":"IDEAYA Biosciences, Inc.","symbol":"IDYA"},"owners":[{"id":110079,"kind":"person","name":"Stone Paul A.","position":1,"cik":"0001777511","reported_name":"Stone Paul A.","relationship":{"officer":true,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2023-08-18T18:33:59.000Z","date":"2023-08-16","kind":"sale","planned":true,"acquired":false,"shares":100,"price":26.4,"value":2640.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported herein were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan, adopted on March 27, 2023."}],"balance_after":19103,"source":{"system":"sec-edgar","filing":"0001610717-23-000233","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1777511/000161071723000233/form4.xml","form_type":"4"}},{"id":1801976,"issuer":{"id":4069,"kind":"organization","name":"IDEAYA Biosciences, Inc.","symbol":"IDYA"},"owners":[{"id":110079,"kind":"person","name":"Stone Paul A.","position":1,"cik":"0001777511","reported_name":"Stone Paul A.","relationship":{"officer":true,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2023-08-18T18:33:59.000Z","date":"2023-08-16","kind":"sale","planned":true,"acquired":false,"shares":100,"price":26.45,"value":2645.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported herein were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan, adopted on March 27, 2023."}],"balance_after":19203,"source":{"system":"sec-edgar","filing":"0001610717-23-000233","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1777511/000161071723000233/form4.xml","form_type":"4"}},{"id":1809995,"issuer":{"id":4069,"kind":"organization","name":"IDEAYA Biosciences, Inc.","symbol":"IDYA"},"owners":[{"id":110079,"kind":"person","name":"Stone Paul A.","position":1,"cik":"0001777511","reported_name":"Stone Paul A.","relationship":{"officer":true,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2023-08-11T19:21:28.000Z","date":"2023-08-09","kind":"sale","planned":true,"acquired":false,"shares":2500,"price":25.0453,"value":62613.25,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported herein were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan, adopted on March 27, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades in prices ranging from $25.00 to $25.105, inclusive. The price reported in Column 4 above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote."}],"balance_after":19303,"source":{"system":"sec-edgar","filing":"0001610717-23-000225","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1777511/000161071723000225/form4.xml","form_type":"4"}},{"id":1919641,"issuer":{"id":4069,"kind":"organization","name":"IDEAYA Biosciences, Inc.","symbol":"IDYA"},"owners":[{"id":110079,"kind":"person","name":"Stone Paul A.","position":1,"cik":"0001777511","reported_name":"Stone Paul A.","relationship":{"officer":true,"officer_title":"Chief Financial Officer"}}],"security":"Stock Option (right to 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The price reported in Column 4 above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote."}],"balance_after":12944,"source":{"system":"sec-edgar","filing":"0001567619-21-016924","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1777511/000156761921016924/doc1.xml","form_type":"4"}},{"id":2829935,"issuer":{"id":4069,"kind":"organization","name":"IDEAYA Biosciences, Inc.","symbol":"IDYA"},"owners":[{"id":110079,"kind":"person","name":"Stone Paul A.","position":1,"cik":"0001777511","reported_name":"Stone Paul A.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Chief Financial Officer"}}],"security":"Stock Option (right to 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The price reported in Column 4 above reflects the weighted average sale price. 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The price reported in Column 4 above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote."}],"balance_after":15600,"source":{"system":"sec-edgar","filing":"0001567619-20-012462","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1777511/000156761920012462/doc1.xml","form_type":"4"}},{"id":3104426,"issuer":{"id":4069,"kind":"organization","name":"IDEAYA Biosciences, Inc.","symbol":"IDYA"},"owners":[{"id":110079,"kind":"person","name":"Stone Paul A.","position":1,"cik":"0001777511","reported_name":"Stone Paul A.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common 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