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The Reporting Person undertakes to provide upon request by the staff of the Securities and Exchange Commission, the Issuer or a security holder of the Issuer full information regarding the number of shares purchased or sold at each separate price."}],"balance_after":479164,"source":{"system":"sec-edgar","filing":"0001217234-23-000206","document":"wk-form4_1696290812.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1688485/000121723423000206/wk-form4_1696290812.xml","form_type":"4"}},{"id":1789248,"issuer":{"id":4344,"kind":"organization","name":"CareDx, Inc.","symbol":"CDNA"},"owners":[{"id":109310,"kind":"person","name":"Seeto Reginald","position":1,"cik":"0001688485","reported_name":"Seeto Reginald","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock","published_at":"2023-09-05T16:03:23.000Z","date":"2023-09-05","kind":"sale","planned":false,"acquired":false,"shares":2819,"price":9.4935,"value":26762.1765,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 2, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. 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The Reporting Person undertakes to provide upon request by the staff of the Securities and Exchange Commission, the Issuer or a security holder of the Issuer full information regarding the number of shares purchased or sold at each separate price."}],"balance_after":481982,"source":{"system":"sec-edgar","filing":"0001217234-23-000192","document":"wf-form4_169394418024806.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1688485/000121723423000192/wf-form4_169394418024806.xml","form_type":"4"}},{"id":1808616,"issuer":{"id":4344,"kind":"organization","name":"CareDx, Inc.","symbol":"CDNA"},"owners":[{"id":109310,"kind":"person","name":"Seeto Reginald","position":1,"cik":"0001688485","reported_name":"Seeto Reginald","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock","published_at":"2023-08-14T19:52:12.000Z","date":"2023-08-14","kind":"sale","planned":false,"acquired":false,"shares":576,"price":8.8935,"value":5122.656,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 2, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. 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The Reporting Person undertakes to provide upon request by the staff of the Securities and Exchange Commission, the Issuer or a security holder of the Issuer full information regarding the number of shares purchased or sold at each separate price."}],"balance_after":486137,"source":{"system":"sec-edgar","filing":"0001217234-23-000166","document":"wf-form4_169101681206848.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1688485/000121723423000166/wf-form4_169101681206848.xml","form_type":"4"}},{"id":1830327,"issuer":{"id":4344,"kind":"organization","name":"CareDx, Inc.","symbol":"CDNA"},"owners":[{"id":109310,"kind":"person","name":"Seeto Reginald","position":1,"cik":"0001688485","reported_name":"Seeto Reginald","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock","published_at":"2023-07-13T20:56:46.000Z","date":"2023-07-13","kind":"sale","planned":false,"acquired":false,"shares":5260,"price":10.3341,"value":54357.366,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 2, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.11 to $10.71, inclusive. The Reporting Person undertakes to provide upon request by the staff of the Securities and Exchange Commission, the Issuer or a security holder of the Issuer full information regarding the number of shares purchased or sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes 815 shares acquired pursuant to the Issuer's 2014 Employee Stock Purchase Plan."}],"balance_after":488870,"source":{"system":"sec-edgar","filing":"0001217234-23-000160","document":"wf-form4_168929619308128.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1688485/000121723423000160/wf-form4_168929619308128.xml","form_type":"4"}},{"id":1832244,"issuer":{"id":4344,"kind":"organization","name":"CareDx, Inc.","symbol":"CDNA"},"owners":[{"id":109310,"kind":"person","name":"Seeto Reginald","position":1,"cik":"0001688485","reported_name":"Seeto Reginald","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock","published_at":"2023-07-10T20:31:14.000Z","date":"2023-07-06","kind":"tax_withholding","planned":false,"acquired":false,"shares":4740,"price":8.37,"value":39673.8,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares were withheld by the Issuer in order to satisfy certain tax withholding obligations in connection with the issuance of shares upon the vesting of restricted stock units."}],"balance_after":493315,"source":{"system":"sec-edgar","filing":"0001217234-23-000152","document":"wf-form4_168903546175857.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1688485/000121723423000152/wf-form4_168903546175857.xml","form_type":"4"}},{"id":1839736,"issuer":{"id":4344,"kind":"organization","name":"CareDx, Inc.","symbol":"CDNA"},"owners":[{"id":109310,"kind":"person","name":"Seeto Reginald","position":1,"cik":"0001688485","reported_name":"Seeto Reginald","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock","published_at":"2023-07-03T17:19:05.000Z","date":"2023-07-03","kind":"sale","planned":false,"acquired":false,"shares":2818,"price":8.4815,"value":23900.867,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 2, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. 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