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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":0,"source":{"system":"sec-edgar","filing":"0001567619-21-014176","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1676725/000156761921014176/doc1.xml","form_type":"4"}},{"id":2621883,"issuer":{"id":4069,"kind":"organization","name":"IDEAYA Biosciences, Inc.","symbol":"IDYA"},"owners":[{"id":89465,"kind":"person","name":"Throne Jason","position":1,"cik":"0001790865","reported_name":"Throne Jason","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, General Counsel"}}],"security":"Common 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vest on the first anniversary measured from October 9, 2019 (the \"Vesting Commencement Date\"), and 1/48th of the total number of shares vest monthly thereafter, such that 100% of the shares subject to the option will be fully vested and exercisable on the fourth anniversary of the Vesting Commencement Date."}],"balance_after":67390,"derivative":{"exercise_price":7.01,"expiration_date":"2029-10-08","underlying":"Common Stock","underlying_shares":7610},"source":{"system":"sec-edgar","filing":"0001567619-21-013155","document":"doc1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1676725/000156761921013155/doc1.xml","form_type":"4"}},{"id":2637713,"issuer":{"id":4069,"kind":"organization","name":"IDEAYA Biosciences, Inc.","symbol":"IDYA"},"owners":[{"id":89465,"kind":"person","name":"Throne Jason","position":1,"cik":"0001790865","reported_name":"Throne 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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":0,"source":{"system":"sec-edgar","filing":"0001567619-21-013155","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1676725/000156761921013155/doc1.xml","form_type":"4"}},{"id":2637712,"issuer":{"id":4069,"kind":"organization","name":"IDEAYA Biosciences, Inc.","symbol":"IDYA"},"owners":[{"id":89465,"kind":"person","name":"Throne Jason","position":1,"cik":"0001790865","reported_name":"Throne Jason","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, General Counsel"}}],"security":"Common Stock","published_at":"2021-07-08T23:00:53.000Z","date":"2021-07-06","kind":"sale","acquired":false,"shares":2031,"price":22.1641,"value":45015.2871,"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."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades in prices ranging from $21.56 to $22.56, 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":359,"source":{"system":"sec-edgar","filing":"0001567619-21-013155","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1676725/000156761921013155/doc1.xml","form_type":"4"}},{"id":2637711,"issuer":{"id":4069,"kind":"organization","name":"IDEAYA Biosciences, Inc.","symbol":"IDYA"},"owners":[{"id":89465,"kind":"person","name":"Throne Jason","position":1,"cik":"0001790865","reported_name":"Throne Jason","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, General Counsel"}}],"security":"Common Stock","published_at":"2021-07-08T23:00:53.000Z","date":"2021-07-06","kind":"sale","acquired":false,"shares":1142,"price":22.6753,"value":25895.1926,"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."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades in prices ranging from $22.57 to $22.79, 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":2390,"source":{"system":"sec-edgar","filing":"0001567619-21-013155","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1676725/000156761921013155/doc1.xml","form_type":"4"}},{"id":2637710,"issuer":{"id":4069,"kind":"organization","name":"IDEAYA Biosciences, Inc.","symbol":"IDYA"},"owners":[{"id":89465,"kind":"person","name":"Throne Jason","position":1,"cik":"0001790865","reported_name":"Throne Jason","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, General Counsel"}}],"security":"Common Stock","published_at":"2021-07-08T23:00:53.000Z","date":"2021-07-06","kind":"sale","acquired":false,"shares":6468,"price":22.1641,"value":143357.3988,"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."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades in prices ranging from $21.56 to $22.56, 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":3532,"source":{"system":"sec-edgar","filing":"0001567619-21-013155","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1676725/000156761921013155/doc1.xml","form_type":"4"}},{"id":2637709,"issuer":{"id":4069,"kind":"organization","name":"IDEAYA Biosciences, Inc.","symbol":"IDYA"},"owners":[{"id":89465,"kind":"person","name":"Throne Jason","position":1,"cik":"0001790865","reported_name":"Throne Jason","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, General Counsel"}}],"security":"Common Stock","published_at":"2021-07-08T23:00:53.000Z","date":"2021-07-06","kind":"exercise","acquired":true,"shares":2390,"price":13.34,"value":31882.6,"ownership":{"direct":true},"balance_after":10000,"source":{"system":"sec-edgar","filing":"0001567619-21-013155","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1676725/000156761921013155/doc1.xml","form_type":"4"}},{"id":2637708,"issuer":{"id":4069,"kind":"organization","name":"IDEAYA Biosciences, Inc.","symbol":"IDYA"},"owners":[{"id":89465,"kind":"person","name":"Throne Jason","position":1,"cik":"0001790865","reported_name":"Throne Jason","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, General Counsel"}}],"security":"Common Stock","published_at":"2021-07-08T23:00:53.000Z","date":"2021-07-06","kind":"exercise","acquired":true,"shares":7610,"price":7.01,"value":53346.1,"ownership":{"direct":true},"balance_after":7610,"source":{"system":"sec-edgar","filing":"0001567619-21-013155","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1676725/000156761921013155/doc1.xml","form_type":"4"}},{"id":2828913,"issuer":{"id":4069,"kind":"organization","name":"IDEAYA Biosciences, Inc.","symbol":"IDYA"},"owners":[{"id":89465,"kind":"person","name":"Throne Jason","position":1,"cik":"0001790865","reported_name":"Throne Jason","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, General Counsel"}}],"security":"Stock Option (right to buy)","published_at":"2021-02-27T00:09:02.000Z","date":"2021-02-24","kind":"grant","acquired":true,"shares":52500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"25% of the shares subject to the option vest on the first anniversary measured from January 1, 2021 (the \"Vesting Commencement Date\"), and 1/48th of the total number of shares vest monthly thereafter, such that 100% of the shares subject to the option will be fully vested and exercisable on the fourth anniversary of the Vesting Commencement Date."}],"balance_after":52500,"derivative":{"exercise_price":19.52,"expiration_date":"2031-02-23","underlying":"Common Stock","underlying_shares":52500},"source":{"system":"sec-edgar","filing":"0001567619-21-005113","document":"doc1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1676725/000156761921005113/doc1.xml","form_type":"4"}},{"id":2952988,"issuer":{"id":4069,"kind":"organization","name":"IDEAYA Biosciences, Inc.","symbol":"IDYA"},"owners":[{"id":89465,"kind":"person","name":"Throne Jason","position":1,"cik":"0001790865","reported_name":"Throne Jason","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, General Counsel"}}],"security":"Common Stock","published_at":"2020-12-08T21:03:06.000Z","date":"2020-12-04","kind":"sale","acquired":false,"shares":1579,"price":15.5467,"value":24548.2393,"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."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades in prices ranging from $15.39 to $15.97, 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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes 1,979 shares acquired pursuant to Issuer's Employee Stock Purchase Plan on November 30, 2020."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001567619-20-020759","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1676725/000156761920020759/doc1.xml","form_type":"4"}},{"id":2952987,"issuer":{"id":4069,"kind":"organization","name":"IDEAYA Biosciences, Inc.","symbol":"IDYA"},"owners":[{"id":89465,"kind":"person","name":"Throne Jason","position":1,"cik":"0001790865","reported_name":"Throne Jason","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, General Counsel"}}],"security":"Common Stock","published_at":"2020-12-08T21:03:06.000Z","date":"2020-12-04","kind":"sale","acquired":false,"shares":400,"price":14.655,"value":5862.0,"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."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades in prices ranging from $14.38 to $15.36, 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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes 1,979 shares acquired pursuant to Issuer's Employee Stock Purchase Plan on November 30, 2020."}],"balance_after":1579,"source":{"system":"sec-edgar","filing":"0001567619-20-020759","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1676725/000156761920020759/doc1.xml","form_type":"4"}},{"id":3090623,"issuer":{"id":4069,"kind":"organization","name":"IDEAYA Biosciences, Inc.","symbol":"IDYA"},"owners":[{"id":89465,"kind":"person","name":"Throne Jason","position":1,"cik":"0001790865","reported_name":"Throne Jason","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, General Counsel"}}],"security":"Stock Option (Right to Buy)","published_at":"2020-07-02T22:44:45.000Z","date":"2020-07-01","kind":"grant","acquired":true,"shares":75000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"25% of the shares subject to the option vest on the first anniversary measured from July 1, 2020 (the \"Vesting Commencement Date\"), and 1/48th of the total number of shares vest monthly thereafter, such that 100% of the shares subject to the option will be fully vested and exercisable on the fourth anniversary of the Vesting Commencement Date."}],"balance_after":75000,"derivative":{"exercise_price":13.34,"expiration_date":"2030-06-30","underlying":"Common Stock","underlying_shares":75000},"source":{"system":"sec-edgar","filing":"0001567619-20-012887","document":"doc1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1676725/000156761920012887/doc1.xml","form_type":"4"}},{"id":3118068,"issuer":{"id":4069,"kind":"organization","name":"IDEAYA Biosciences, Inc.","symbol":"IDYA"},"owners":[{"id":89465,"kind":"person","name":"Throne Jason","position":1,"cik":"0001790865","reported_name":"Throne Jason","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, General Counsel"}}],"security":"Common Stock","published_at":"2020-06-08T20:51:06.000Z","date":"2020-06-04","kind":"sale","acquired":false,"shares":2205,"price":8.6561,"value":19086.7005,"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."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades in prices ranging from $8.40 to $8.78, 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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes 2,205 shares acquired pursuant to Issuer's Employee Stock Purchase Plan on May 29, 2020."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001567619-20-011852","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1676725/000156761920011852/doc1.xml","form_type":"4"}},{"id":3394209,"issuer":{"id":4069,"kind":"organization","name":"IDEAYA Biosciences, Inc.","symbol":"IDYA"},"owners":[{"id":89465,"kind":"person","name":"Throne Jason","position":1,"cik":"0001790865","reported_name":"Throne Jason","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, General Counsel"}}],"security":"Stock Option (right to buy)","published_at":"2019-10-11T16:46:06.000Z","date":"2019-10-09","kind":"grant","acquired":true,"shares":75000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"25% of the shares subject to the option vest on the first anniversary measured from October 9, 2019 (the \"Vesting Commencement Date\"), and 1/48th of the total number of shares vest monthly thereafter, such that 100% of the shares subject to the option will be fully vested and exercisable on the fourth anniversary of the Vesting Commencement Date."}],"balance_after":75000,"derivative":{"exercise_price":7.01,"expiration_date":"2029-10-08","underlying":"Common Stock","underlying_shares":75000},"source":{"system":"sec-edgar","filing":"0001567619-19-019494","document":"doc1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1676725/000156761919019494/doc1.xml","form_type":"4"}}]}