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The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. 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The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. 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The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. 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The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":593577,"source":{"system":"sec-edgar","filing":"0001447362-21-000070","document":"wf-form4_161783372923988.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000144736221000070/wf-form4_161783372923988.xml","form_type":"4"}},{"id":2762312,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-04-02T22:05:16.000Z","date":"2021-04-01","kind":"sale","acquired":false,"shares":20000,"price":70.8017,"value":1416034.0,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by Sofinnova HealthQuest Partners, L.P. on December 17, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"This transaction was executed in multiple trades at prices ranging from $70.5502 to $71.0532, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. 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The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. 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HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":703577,"source":{"system":"sec-edgar","filing":"0001447362-21-000067","document":"wf-form4_161740106185755.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000144736221000067/wf-form4_161740106185755.xml","form_type":"4"}},{"id":2762309,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-04-02T22:05:16.000Z","date":"2021-03-31","kind":"sale","acquired":false,"shares":20000,"price":67.5626,"value":1351252.0,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by Sofinnova HealthQuest Partners, L.P. on December 17, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $67.0821 to $68.0430, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. 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HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":733577,"source":{"system":"sec-edgar","filing":"0001447362-21-000059","document":"wf-form4_161653494158788.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000144736221000059/wf-form4_161653494158788.xml","form_type":"4"}},{"id":2775364,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-03-23T21:29:29.000Z","date":"2021-03-19","kind":"sale","acquired":false,"shares":10000,"price":66.1699,"value":661699.0,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction on this Form 4 was made pursuant to a Rule 10b5-1 plan adopted by Sofinnova HealthQuest Partners, L.P. on December 17, 2020."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":743577,"source":{"system":"sec-edgar","filing":"0001447362-21-000059","document":"wf-form4_161653494158788.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000144736221000059/wf-form4_161653494158788.xml","form_type":"4"}},{"id":2779816,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-03-18T20:14:25.000Z","date":"2021-03-17","kind":"sale","acquired":false,"shares":10000,"price":66.1365,"value":661365.0,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction on this Form 4 was made pursuant to a Rule 10b5-1 plan adopted by Sofinnova HealthQuest Partners, L.P. on December 17, 2020."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":753577,"source":{"system":"sec-edgar","filing":"0001447362-21-000055","document":"wf-form4_161609844748968.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000144736221000055/wf-form4_161609844748968.xml","form_type":"4"}},{"id":2779815,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-03-18T20:14:25.000Z","date":"2021-03-16","kind":"sale","acquired":false,"shares":20000,"price":65.7283,"value":1314566.0,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction on this Form 4 was made pursuant to a Rule 10b5-1 plan adopted by Sofinnova HealthQuest Partners, L.P. on December 17, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"This transaction was executed in multiple trades at prices ranging from $65.7011 to $65.7554, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":763577,"source":{"system":"sec-edgar","filing":"0001447362-21-000055","document":"wf-form4_161609844748968.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000144736221000055/wf-form4_161609844748968.xml","form_type":"4"}},{"id":2779814,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-03-18T20:14:25.000Z","date":"2021-03-16","kind":"sale","acquired":false,"shares":40000,"price":64.6264,"value":2585056.0,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction on this Form 4 was made pursuant to a Rule 10b5-1 plan adopted by Sofinnova HealthQuest Partners, L.P. on December 17, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"This transaction was executed in multiple trades at prices ranging from $64.4900 to $64.7471, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":783577,"source":{"system":"sec-edgar","filing":"0001447362-21-000055","document":"wf-form4_161609844748968.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000144736221000055/wf-form4_161609844748968.xml","form_type":"4"}},{"id":2779813,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-03-18T20:14:25.000Z","date":"2021-03-16","kind":"sale","acquired":false,"shares":30000,"price":63.7569,"value":1912707.0,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction on this Form 4 was made pursuant to a Rule 10b5-1 plan adopted by Sofinnova HealthQuest Partners, L.P. on December 17, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $63.4256 to $63.9355, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":823577,"source":{"system":"sec-edgar","filing":"0001447362-21-000055","document":"wf-form4_161609844748968.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000144736221000055/wf-form4_161609844748968.xml","form_type":"4"}},{"id":2779812,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-03-18T20:14:25.000Z","date":"2021-03-16","kind":"sale","acquired":false,"shares":30000,"price":61.2117,"value":1836351.0,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction on this Form 4 was made pursuant to a Rule 10b5-1 plan adopted by Sofinnova HealthQuest Partners, L.P. on December 17, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $61.1168 to $61.3623, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":853577,"source":{"system":"sec-edgar","filing":"0001447362-21-000055","document":"wf-form4_161609844748968.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000144736221000055/wf-form4_161609844748968.xml","form_type":"4"}},{"id":3008575,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-10-13T13:33:02.000Z","date":"2020-10-09","kind":"sale","acquired":false,"shares":25000,"price":54.163,"value":1354075.0,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction on this Form 4 was made pursuant to a Rule 10b5-1 plan adopted by Sofinnova HealthQuest Partners, L.P. on May 22, 2020."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":883577,"source":{"system":"sec-edgar","filing":"0001447362-20-000235","document":"wf-form4_160259596962150.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000144736220000235/wf-form4_160259596962150.xml","form_type":"4"}},{"id":3008574,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-10-13T13:33:02.000Z","date":"2020-10-08","kind":"sale","acquired":false,"shares":25000,"price":54.2311,"value":1355777.5,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction on this Form 4 was made pursuant to a Rule 10b5-1 plan adopted by Sofinnova HealthQuest Partners, L.P. on May 22, 2020."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":908577,"source":{"system":"sec-edgar","filing":"0001447362-20-000235","document":"wf-form4_160259596962150.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000144736220000235/wf-form4_160259596962150.xml","form_type":"4"}},{"id":3010253,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-10-08T20:16:45.000Z","date":"2020-10-06","kind":"sale","acquired":false,"shares":50000,"price":53.0931,"value":2654655.0,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction on this Form 4 was made pursuant to a Rule 10b5-1 plan adopted by Sofinnova HealthQuest Partners, L.P. on May 22, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $53.0300 to $53.1561, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":933577,"source":{"system":"sec-edgar","filing":"0001447362-20-000233","document":"wf-form4_160218819191283.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000144736220000233/wf-form4_160218819191283.xml","form_type":"4"}},{"id":3011945,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-10-06T20:09:58.000Z","date":"2020-10-05","kind":"sale","acquired":false,"shares":25000,"price":52.09,"value":1302250.0,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction on this Form 4 was made pursuant to a Rule 10b5-1 plan adopted by Sofinnova HealthQuest Partners, L.P. on May 22, 2020."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":983577,"source":{"system":"sec-edgar","filing":"0001447362-20-000231","document":"wf-form4_160201498604990.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000144736220000231/wf-form4_160201498604990.xml","form_type":"4"}},{"id":3011944,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-10-06T20:09:58.000Z","date":"2020-10-02","kind":"sale","acquired":false,"shares":25000,"price":52.0673,"value":1301682.5,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction on this Form 4 was made pursuant to a Rule 10b5-1 plan adopted by Sofinnova HealthQuest Partners, L.P. on May 22, 2020."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":1008577,"source":{"system":"sec-edgar","filing":"0001447362-20-000231","document":"wf-form4_160201498604990.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000144736220000231/wf-form4_160201498604990.xml","form_type":"4"}},{"id":3036729,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-09-08T20:06:21.000Z","date":"2020-09-03","kind":"sale","acquired":false,"shares":25000,"price":46.053,"value":1151325.0,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction on this Form 4 was made pursuant to a Rule 10b5-1 plan adopted by Sofinnova HealthQuest Partners, L.P. on May 22, 2020."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":1033577,"source":{"system":"sec-edgar","filing":"0001447362-20-000205","document":"wf-form4_159959556260286.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000144736220000205/wf-form4_159959556260286.xml","form_type":"4"}},{"id":3050206,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-08-21T20:05:54.000Z","date":"2020-08-19","kind":"sale","acquired":false,"shares":75000,"price":44.78,"value":3358500.0,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction on this Form 4 was made pursuant to a Rule 10b5-1 plan adopted by Sofinnova HealthQuest Partners, L.P. on May 22, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $44.16 to $45.13, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. 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HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. 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HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. 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The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. 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HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":1233577,"source":{"system":"sec-edgar","filing":"0001447362-20-000137","document":"wf-form4_159295798278906.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000144736220000137/wf-form4_159295798278906.xml","form_type":"4"}},{"id":3102223,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-06-24T00:20:00.000Z","date":"2020-06-22","kind":"sale","acquired":false,"shares":25000,"price":41.2345,"value":1030862.5,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by Sofinnova HealthQuest Partners, L.P. on May 22, 2020."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":1258577,"source":{"system":"sec-edgar","filing":"0001447362-20-000137","document":"wf-form4_159295798278906.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000144736220000137/wf-form4_159295798278906.xml","form_type":"4"}},{"id":3102222,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-06-24T00:20:00.000Z","date":"2020-06-22","kind":"sale","acquired":false,"shares":150000,"price":40.3809,"value":6057135.0,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by Sofinnova HealthQuest Partners, L.P. on May 22, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $40.2111 to $41.0764, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. 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The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":1433577,"source":{"system":"sec-edgar","filing":"0001447362-20-000062","document":"wf-form4_158948675910469.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000144736220000062/wf-form4_158948675910469.xml","form_type":"4"}},{"id":3149484,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-05-14T20:06:17.000Z","date":"2020-05-12","kind":"sale","acquired":false,"shares":100000,"price":34.2537,"value":3425370.0,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by Sofinnova HealthQuest Partners, L.P. on December 17, 2019."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $34.0861 to $34.6399, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":1533577,"source":{"system":"sec-edgar","filing":"0001447362-20-000062","document":"wf-form4_158948675910469.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000144736220000062/wf-form4_158948675910469.xml","form_type":"4"}},{"id":3149483,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-05-14T20:06:17.000Z","date":"2020-05-12","kind":"sale","acquired":false,"shares":50000,"price":33.037,"value":1651850.0,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by Sofinnova HealthQuest Partners, L.P. on December 17, 2019."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $33.0340 to $33.0400, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":1633577,"source":{"system":"sec-edgar","filing":"0001447362-20-000062","document":"wf-form4_158948675910469.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000144736220000062/wf-form4_158948675910469.xml","form_type":"4"}},{"id":3257322,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2020-02-21T22:50:57.000Z","date":"2020-02-19","kind":"sale","acquired":false,"shares":25000,"price":32.03,"value":800750.0,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction on this Form 4 was made pursuant to a Rule 10b5-1 plan adopted by Sofinnova HealthQuest Partners, L.P. on December 17, 2019."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. 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HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":1708577,"source":{"system":"sec-edgar","filing":"0001447362-20-000012","document":"wf-form4_158206493466077.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000144736220000012/wf-form4_158206493466077.xml","form_type":"4"}},{"id":3282980,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2020-02-10T21:46:41.000Z","date":"2020-02-06","kind":"sale","acquired":false,"shares":25000,"price":31.03,"value":775750.0,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction on this Form 4 was made pursuant to a Rule 10b5-1 plan adopted by Sofinnova HealthQuest Partners, L.P. on December 17, 2019."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":1733577,"source":{"system":"sec-edgar","filing":"0001447362-20-000010","document":"wf-form4_158137118397757.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000144736220000010/wf-form4_158137118397757.xml","form_type":"4"}},{"id":3292657,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2020-02-04T20:35:23.000Z","date":"2020-02-03","kind":"sale","acquired":false,"shares":25000,"price":31.061,"value":776525.0,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by Sofinnova HealthQuest Partners, L.P. on December 17, 2019."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":1758577,"source":{"system":"sec-edgar","filing":"0001447362-20-000008","document":"wf-form4_158084850505165.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000144736220000008/wf-form4_158084850505165.xml","form_type":"4"}},{"id":3292656,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2020-02-04T20:35:23.000Z","date":"2020-01-31","kind":"sale","acquired":false,"shares":25000,"price":30.0155,"value":750387.5,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by Sofinnova HealthQuest Partners, L.P. on December 17, 2019."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":1783577,"source":{"system":"sec-edgar","filing":"0001447362-20-000008","document":"wf-form4_158084850505165.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000144736220000008/wf-form4_158084850505165.xml","form_type":"4"}},{"id":3297932,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2020-01-31T00:08:11.000Z","date":"2020-01-28","kind":"sale","acquired":false,"shares":25000,"price":30.0197,"value":750492.5,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction on this Form 4 was made pursuant to a Rule 10b5-1 plan adopted by Sofinnova HealthQuest Partners, L.P. on December 17, 2019."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the general partner of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":1808577,"source":{"system":"sec-edgar","filing":"0001447362-20-000006","document":"wf-form4_158042927390856.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000144736220000006/wf-form4_158042927390856.xml","form_type":"4"}},{"id":3452443,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Warrant to purchase Series F Preferred Stock","published_at":"2019-07-31T22:48:01.000Z","date":"2019-07-29","kind":"other","acquired":false,"shares":14107,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"shares","element":"transactionShares","label":"F7","text":"Immediately prior to the closing of the IPO, the warrant became exercisable for 11,572 shares of Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F8","text":"Immediately exercisable."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the managing member of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":0,"derivative":{"exercise_price":0.02,"expiration_date":"2019-07-29","underlying":"Common Stock","underlying_shares":11572},"source":{"system":"sec-edgar","filing":"0001209191-19-043912","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000120919119043912/doc4.xml","form_type":"4"}},{"id":3452442,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Convertible Promissory Note","published_at":"2019-07-31T22:48:01.000Z","date":"2019-07-29","kind":"exercise","acquired":false,"reported_value":1027882,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"The principal amount of the Convertible Promissory Note held by HealthQuest Partners was $1,027,882. Upon closing of the IPO, all unpaid principal and accrued interest outstanding on the Convertible Promissory Note (the \"Conversion Amount\") automatically converted into the number of shares of Common Stock equal to the Conversion Amount as of the date immediately prior to the closing date divided by 80% of the IPO price per share of $16.00 per share."},{"field":"reported_value","element":"transactionTotalValue","label":"F4","text":"The principal amount of the Convertible Promissory Note held by HealthQuest Partners was $1,027,882. Upon closing of the IPO, all unpaid principal and accrued interest outstanding on the Convertible Promissory Note (the \"Conversion Amount\") automatically converted into the number of shares of Common Stock equal to the Conversion Amount as of the date immediately prior to the closing date divided by 80% of the IPO price per share of $16.00 per share."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The principal amount of the Convertible Promissory Note held by HealthQuest Partners was $1,027,882. Upon closing of the IPO, all unpaid principal and accrued interest outstanding on the Convertible Promissory Note (the \"Conversion Amount\") automatically converted into the number of shares of Common Stock equal to the Conversion Amount as of the date immediately prior to the closing date divided by 80% of the IPO price per share of $16.00 per share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The principal amount of the Convertible Promissory Note held by HealthQuest Partners was $1,027,882. Upon closing of the IPO, all unpaid principal and accrued interest outstanding on the Convertible Promissory Note (the \"Conversion Amount\") automatically converted into the number of shares of Common Stock equal to the Conversion Amount as of the date immediately prior to the closing date divided by 80% of the IPO price per share of $16.00 per share."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The principal amount of the Convertible Promissory Note held by HealthQuest Partners was $1,027,882. Upon closing of the IPO, all unpaid principal and accrued interest outstanding on the Convertible Promissory Note (the \"Conversion Amount\") automatically converted into the number of shares of Common Stock equal to the Conversion Amount as of the date immediately prior to the closing date divided by 80% of the IPO price per share of $16.00 per share."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the managing member of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":0,"derivative":{"exercise_price":12.8,"underlying":"Common Stock","underlying_shares":83453},"source":{"system":"sec-edgar","filing":"0001209191-19-043912","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000120919119043912/doc4.xml","form_type":"4"}},{"id":3452441,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series F Preferred Stock","published_at":"2019-07-31T22:48:01.000Z","date":"2019-07-29","kind":"exercise","acquired":false,"shares":1198016,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Every 1.219 outstanding shares of Preferred Stock automatically converted into 1 share of Common Stock immediately prior to the closing of the Issuer's initial public offering (the \"IPO\"), for no additional consideration, with cash paid for any fractional shares. The Preferred Stock had no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Every 1.219 outstanding shares of Preferred Stock automatically converted into 1 share of Common Stock immediately prior to the closing of the Issuer's initial public offering (the \"IPO\"), for no additional consideration, with cash paid for any fractional shares. The Preferred Stock had no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Every 1.219 outstanding shares of Preferred Stock automatically converted into 1 share of Common Stock immediately prior to the closing of the Issuer's initial public offering (the \"IPO\"), for no additional consideration, with cash paid for any fractional shares. The Preferred Stock had no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Every 1.219 outstanding shares of Preferred Stock automatically converted into 1 share of Common Stock immediately prior to the closing of the Issuer's initial public offering (the \"IPO\"), for no additional consideration, with cash paid for any fractional shares. The Preferred Stock had no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the managing member of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":982785},"source":{"system":"sec-edgar","filing":"0001209191-19-043912","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000120919119043912/doc4.xml","form_type":"4"}},{"id":3452440,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series E-3 Preferred Stock","published_at":"2019-07-31T22:48:01.000Z","date":"2019-07-29","kind":"exercise","acquired":false,"shares":388669,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Every 1.219 outstanding shares of Preferred Stock automatically converted into 1 share of Common Stock immediately prior to the closing of the Issuer's initial public offering (the \"IPO\"), for no additional consideration, with cash paid for any fractional shares. The Preferred Stock had no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Every 1.219 outstanding shares of Preferred Stock automatically converted into 1 share of Common Stock immediately prior to the closing of the Issuer's initial public offering (the \"IPO\"), for no additional consideration, with cash paid for any fractional shares. The Preferred Stock had no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Every 1.219 outstanding shares of Preferred Stock automatically converted into 1 share of Common Stock immediately prior to the closing of the Issuer's initial public offering (the \"IPO\"), for no additional consideration, with cash paid for any fractional shares. The Preferred Stock had no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Every 1.219 outstanding shares of Preferred Stock automatically converted into 1 share of Common Stock immediately prior to the closing of the Issuer's initial public offering (the \"IPO\"), for no additional consideration, with cash paid for any fractional shares. The Preferred Stock had no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the managing member of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":318842},"source":{"system":"sec-edgar","filing":"0001209191-19-043912","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000120919119043912/doc4.xml","form_type":"4"}},{"id":3452439,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series E-2 Preferred Stock","published_at":"2019-07-31T22:48:01.000Z","date":"2019-07-29","kind":"exercise","acquired":false,"shares":436910,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Every 1.219 outstanding shares of Preferred Stock automatically converted into 1 share of Common Stock immediately prior to the closing of the Issuer's initial public offering (the \"IPO\"), for no additional consideration, with cash paid for any fractional shares. The Preferred Stock had no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Every 1.219 outstanding shares of Preferred Stock automatically converted into 1 share of Common Stock immediately prior to the closing of the Issuer's initial public offering (the \"IPO\"), for no additional consideration, with cash paid for any fractional shares. The Preferred Stock had no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Every 1.219 outstanding shares of Preferred Stock automatically converted into 1 share of Common Stock immediately prior to the closing of the Issuer's initial public offering (the \"IPO\"), for no additional consideration, with cash paid for any fractional shares. The Preferred Stock had no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Every 1.219 outstanding shares of Preferred Stock automatically converted into 1 share of Common Stock immediately prior to the closing of the Issuer's initial public offering (the \"IPO\"), for no additional consideration, with cash paid for any fractional shares. The Preferred Stock had no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the managing member of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":358416},"source":{"system":"sec-edgar","filing":"0001209191-19-043912","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000120919119043912/doc4.xml","form_type":"4"}},{"id":3452438,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series A Preferred Stock","published_at":"2019-07-31T22:48:01.000Z","date":"2019-07-29","kind":"exercise","acquired":false,"shares":19524,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Every 1.219 outstanding shares of Preferred Stock automatically converted into 1 share of Common Stock immediately prior to the closing of the Issuer's initial public offering (the \"IPO\"), for no additional consideration, with cash paid for any fractional shares. The Preferred Stock had no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Every 1.219 outstanding shares of Preferred Stock automatically converted into 1 share of Common Stock immediately prior to the closing of the Issuer's initial public offering (the \"IPO\"), for no additional consideration, with cash paid for any fractional shares. The Preferred Stock had no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Every 1.219 outstanding shares of Preferred Stock automatically converted into 1 share of Common Stock immediately prior to the closing of the Issuer's initial public offering (the \"IPO\"), for no additional consideration, with cash paid for any fractional shares. The Preferred Stock had no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Every 1.219 outstanding shares of Preferred Stock automatically converted into 1 share of Common Stock immediately prior to the closing of the Issuer's initial public offering (the \"IPO\"), for no additional consideration, with cash paid for any fractional shares. The Preferred Stock had no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the managing member of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":16015},"source":{"system":"sec-edgar","filing":"0001209191-19-043912","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000120919119043912/doc4.xml","form_type":"4"}},{"id":3452437,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2019-07-31T22:48:01.000Z","date":"2019-07-29","kind":"purchase","acquired":true,"shares":62500,"price":16,"value":1000000.0,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"shares","element":"transactionShares","label":"F6","text":"Represents a purchase from the underwriters in the Issuer's IPO."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the managing member of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":1833577,"source":{"system":"sec-edgar","filing":"0001209191-19-043912","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000120919119043912/doc4.xml","form_type":"4"}},{"id":3452436,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2019-07-31T22:48:01.000Z","date":"2019-07-29","kind":"sale","acquired":false,"shares":9,"price":16,"value":144.0,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F5","text":"On July 29, 2019, the reporting person exercised a warrant to purchase 11,572 shares of the Issuer's common stock for approximately $0.02 per share. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer's withholding of 9 of the warrant shares to pay the exercise price and issuing to the reporting person the remaining 11,563 shares."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the managing member of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":1771077,"source":{"system":"sec-edgar","filing":"0001209191-19-043912","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000120919119043912/doc4.xml","form_type":"4"}},{"id":3452435,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2019-07-31T22:48:01.000Z","date":"2019-07-29","kind":"other","acquired":true,"shares":11572,"price":0.02,"value":231.44,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the managing member of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":1771086,"source":{"system":"sec-edgar","filing":"0001209191-19-043912","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000120919119043912/doc4.xml","form_type":"4"}},{"id":3452434,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2019-07-31T22:48:01.000Z","date":"2019-07-29","kind":"exercise","acquired":true,"shares":83453,"price":12.8,"value":1068198.4,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The principal amount of the Convertible Promissory Note held by HealthQuest Partners was $1,027,882. Upon closing of the IPO, all unpaid principal and accrued interest outstanding on the Convertible Promissory Note (the \"Conversion Amount\") automatically converted into the number of shares of Common Stock equal to the Conversion Amount as of the date immediately prior to the closing date divided by 80% of the IPO price per share of $16.00 per share."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the managing member of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":1759514,"source":{"system":"sec-edgar","filing":"0001209191-19-043912","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000120919119043912/doc4.xml","form_type":"4"}},{"id":3452433,"issuer":{"id":359,"kind":"organization","name":"CASTLE BIOSCIENCES INC","symbol":"CSTL"},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2019-07-31T22:48:01.000Z","date":"2019-07-29","kind":"exercise","acquired":true,"shares":1676061,"ownership":{"direct":false,"nature":"By L.P."},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The shares of Common Stock issued upon conversion of the Preferred Stock were calculated by first aggregating all series of Preferred Stock\nheld by the Reporting Person, in accordance with the terms of the Company's then-effective Certificate of Incorporation."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Every 1.219 outstanding shares of Preferred Stock automatically converted into 1 share of Common Stock immediately prior to the closing of the Issuer's initial public offering (the \"IPO\"), for no additional consideration, with cash paid for any fractional shares. The Preferred Stock had no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held by Sofinnova HealthQuest Partners, L.P., or HealthQuest Partners. HealthQuest Venture Management, L.L.C., or HealthQuest Management, is the managing member of HealthQuest Partners. David Kabakoff, Ph.D., the Reporting Person, is a partner of HealthQuest Management. Garheng Kong is the managing member of HealthQuest Management and has sole voting and investment power over the shares held by HealthQuest Partners. Each of HealthQuest Management, Mr. Kong and Dr. Kabakoff disclaims beneficial ownership over all shares held by HealthQuest Partners except to the extent of any pecuniary interest therein."}],"balance_after":1676061,"source":{"system":"sec-edgar","filing":"0001209191-19-043912","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000120919119043912/doc4.xml","form_type":"4"}},{"id":3488372,"issuer":{"id":7461,"kind":"organization","name":"NextCure, Inc."},"owners":[{"id":36499,"kind":"person","name":"KABAKOFF DAVID S","position":1,"cik":"0001024008","reported_name":"KABAKOFF DAVID S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (Right to Buy)","published_at":"2019-06-18T00:23:04.000Z","date":"2019-06-13","kind":"grant","acquired":true,"shares":22000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option vests in three equal annual installments beginning on June 13, 2020."}],"balance_after":22000,"derivative":{"exercise_price":15.57,"expiration_date":"2029-06-12","underlying":"Common Stock","underlying_shares":22000},"source":{"system":"sec-edgar","filing":"0001123292-19-000892","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1024008/000112329219000892/edgar.xml","form_type":"4"}}]}