{"transactions":[{"id":1270,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-09-02T22:32:06.000Z","date":"2026-09-01","kind":"exercise","planned":false,"acquired":false,"shares":52316,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"On January 28, 2026, the Reporting Person was granted 627,793 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"On January 28, 2026, the Reporting Person was granted 627,793 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":1195861,"derivative":{"underlying":"Class A Common Stock","underlying_shares":52316},"source":{"system":"sec-edgar","filing":"0001628280-26-060220","document":"wk-form4_1788388323.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1849447/000162828026060220/wk-form4_1788388323.xml","form_type":"4"}},{"id":1269,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-09-02T22:32:06.000Z","date":"2026-09-01","kind":"exercise","planned":false,"acquired":false,"shares":111666,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On January 9, 2025, the Reporting Person was granted 1,340,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On January 9, 2025, the Reporting Person was granted 1,340,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":1248177,"derivative":{"underlying":"Class A Common Stock","underlying_shares":111666},"source":{"system":"sec-edgar","filing":"0001628280-26-060220","document":"wk-form4_1788388323.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1849447/000162828026060220/wk-form4_1788388323.xml","form_type":"4"}},{"id":1268,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-09-02T22:32:06.000Z","date":"2026-09-01","kind":"exercise","planned":false,"acquired":false,"shares":166667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On February 26, 2024, the Reporting Person was granted 2,000,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On February 26, 2024, the Reporting Person was granted 2,000,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":1359843,"derivative":{"underlying":"Class A Common Stock","underlying_shares":166667},"source":{"system":"sec-edgar","filing":"0001628280-26-060220","document":"wk-form4_1788388323.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1849447/000162828026060220/wk-form4_1788388323.xml","form_type":"4"}},{"id":1267,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2026-09-02T22:32:06.000Z","date":"2026-09-02","kind":"sale","planned":false,"acquired":false,"shares":27068,"price":2.5812,"value":69867.9216,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary trade by the Reporting Person."}],"balance_after":1691648,"source":{"system":"sec-edgar","filing":"0001628280-26-060220","document":"wk-form4_1788388323.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1849447/000162828026060220/wk-form4_1788388323.xml","form_type":"4"}},{"id":1266,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2026-09-02T22:32:06.000Z","date":"2026-09-01","kind":"exercise","planned":false,"acquired":true,"shares":52316,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1718716,"source":{"system":"sec-edgar","filing":"0001628280-26-060220","document":"wk-form4_1788388323.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1849447/000162828026060220/wk-form4_1788388323.xml","form_type":"4"}},{"id":1265,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2026-09-02T22:32:06.000Z","date":"2026-09-02","kind":"sale","planned":false,"acquired":false,"shares":57771,"price":2.5812,"value":149118.5052,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary trade by the Reporting Person."}],"balance_after":1666400,"source":{"system":"sec-edgar","filing":"0001628280-26-060220","document":"wk-form4_1788388323.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1849447/000162828026060220/wk-form4_1788388323.xml","form_type":"4"}},{"id":1264,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2026-09-02T22:32:06.000Z","date":"2026-09-01","kind":"exercise","planned":false,"acquired":true,"shares":111666,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1724171,"source":{"system":"sec-edgar","filing":"0001628280-26-060220","document":"wk-form4_1788388323.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1849447/000162828026060220/wk-form4_1788388323.xml","form_type":"4"}},{"id":1263,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2026-09-02T22:32:06.000Z","date":"2026-09-02","kind":"sale","planned":false,"acquired":false,"shares":86223,"price":2.5812,"value":222558.8076,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary trade by the Reporting Person."}],"balance_after":1612505,"source":{"system":"sec-edgar","filing":"0001628280-26-060220","document":"wk-form4_1788388323.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1849447/000162828026060220/wk-form4_1788388323.xml","form_type":"4"}},{"id":1262,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2026-09-02T22:32:06.000Z","date":"2026-09-01","kind":"exercise","planned":false,"acquired":true,"shares":166667,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1698728,"source":{"system":"sec-edgar","filing":"0001628280-26-060220","document":"wk-form4_1788388323.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1849447/000162828026060220/wk-form4_1788388323.xml","form_type":"4"}},{"id":751638,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-06-03T20:32:51.000Z","date":"2026-06-01","kind":"exercise","planned":false,"acquired":false,"shares":52316,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"On January 28, 2026, the Reporting Person was granted 627,793 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"On January 28, 2026, the Reporting Person was granted 627,793 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":1526510,"derivative":{"underlying":"Class A Common Stock","underlying_shares":52316},"source":{"system":"sec-edgar","filing":"0001628280-26-040383","document":"wk-form4_1780518768.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026040383/wk-form4_1780518768.xml","form_type":"4"}},{"id":751637,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-06-03T20:32:51.000Z","date":"2026-06-01","kind":"exercise","planned":false,"acquired":false,"shares":111667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On January 9, 2025, the Reporting Person was granted 1,340,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On January 9, 2025, the Reporting Person was granted 1,340,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":1578826,"derivative":{"underlying":"Class A Common Stock","underlying_shares":111667},"source":{"system":"sec-edgar","filing":"0001628280-26-040383","document":"wk-form4_1780518768.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026040383/wk-form4_1780518768.xml","form_type":"4"}},{"id":751636,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-06-03T20:32:51.000Z","date":"2026-06-01","kind":"exercise","planned":false,"acquired":false,"shares":166666,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On February 26, 2024, the Reporting Person was granted 2,000,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On February 26, 2024, the Reporting Person was granted 2,000,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":1690493,"derivative":{"underlying":"Class A Common Stock","underlying_shares":166666},"source":{"system":"sec-edgar","filing":"0001628280-26-040383","document":"wk-form4_1780518768.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026040383/wk-form4_1780518768.xml","form_type":"4"}},{"id":751635,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2026-06-03T20:32:51.000Z","date":"2026-06-02","kind":"sale","planned":false,"acquired":false,"shares":27675,"price":4.4344,"value":122722.02,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary trade by the Reporting Person."}],"balance_after":1532061,"source":{"system":"sec-edgar","filing":"0001628280-26-040383","document":"wk-form4_1780518768.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026040383/wk-form4_1780518768.xml","form_type":"4"}},{"id":751634,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2026-06-03T20:32:51.000Z","date":"2026-06-01","kind":"exercise","planned":false,"acquired":true,"shares":52316,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1559736,"source":{"system":"sec-edgar","filing":"0001628280-26-040383","document":"wk-form4_1780518768.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026040383/wk-form4_1780518768.xml","form_type":"4"}},{"id":751633,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2026-06-03T20:32:51.000Z","date":"2026-06-02","kind":"sale","planned":false,"acquired":false,"shares":59070,"price":4.4346,"value":261951.822,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary trade by the Reporting Person."}],"balance_after":1507420,"source":{"system":"sec-edgar","filing":"0001628280-26-040383","document":"wk-form4_1780518768.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026040383/wk-form4_1780518768.xml","form_type":"4"}},{"id":751632,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2026-06-03T20:32:51.000Z","date":"2026-06-01","kind":"exercise","planned":false,"acquired":true,"shares":111667,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1566490,"source":{"system":"sec-edgar","filing":"0001628280-26-040383","document":"wk-form4_1780518768.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026040383/wk-form4_1780518768.xml","form_type":"4"}},{"id":751631,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2026-06-03T20:32:51.000Z","date":"2026-06-02","kind":"sale","planned":false,"acquired":false,"shares":88163,"price":4.4346,"value":390967.6398,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary trade by the Reporting Person."}],"balance_after":1454823,"source":{"system":"sec-edgar","filing":"0001628280-26-040383","document":"wk-form4_1780518768.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026040383/wk-form4_1780518768.xml","form_type":"4"}},{"id":751630,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2026-06-03T20:32:51.000Z","date":"2026-06-01","kind":"exercise","planned":false,"acquired":true,"shares":166666,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1542986,"source":{"system":"sec-edgar","filing":"0001628280-26-040383","document":"wk-form4_1780518768.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026040383/wk-form4_1780518768.xml","form_type":"4"}},{"id":861403,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class B Common Stock","published_at":"2026-03-05T02:06:41.000Z","date":"2026-03-04","kind":"exercise","planned":false,"acquired":false,"shares":220000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."}],"balance_after":446117,"derivative":{"underlying":"Class A Common Stock","underlying_shares":220000},"source":{"system":"sec-edgar","filing":"0001628280-26-014961","document":"wk-form4_1772676398.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026014961/wk-form4_1772676398.xml","form_type":"4"}},{"id":861402,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class B Common Stock","published_at":"2026-03-05T02:06:41.000Z","date":"2026-03-04","kind":"exercise","planned":false,"acquired":true,"shares":220000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."}],"balance_after":666117,"derivative":{"underlying":"Class A Common Stock","underlying_shares":220000},"source":{"system":"sec-edgar","filing":"0001628280-26-014961","document":"wk-form4_1772676398.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026014961/wk-form4_1772676398.xml","form_type":"4"}},{"id":861401,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2026-03-05T02:06:41.000Z","date":"2026-03-04","kind":"exercise","planned":false,"acquired":false,"shares":220000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"$669,275.20 was paid in cash by the reporting person as consideration for the aggregate option exercise."},{"field":"kind","element":"transactionCoding","label":"F3","text":"Represents an exercise of stock options in which the reporting person paid the exercise price of such options in cash. No shares were sold by the reporting person in connection with this transaction."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The stock options are fully vested."}],"balance_after":1237638,"derivative":{"exercise_price":2.05,"expiration_date":"2029-03-21","underlying":"Class B Common Stock","underlying_shares":220000},"source":{"system":"sec-edgar","filing":"0001628280-26-014961","document":"wk-form4_1772676398.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026014961/wk-form4_1772676398.xml","form_type":"4"}},{"id":861400,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class B Common Stock","published_at":"2026-03-05T02:06:41.000Z","date":"2026-03-04","kind":"exercise","planned":false,"acquired":false,"shares":280000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."}],"balance_after":446117,"derivative":{"underlying":"Class A Common Stock","underlying_shares":280000},"source":{"system":"sec-edgar","filing":"0001628280-26-014961","document":"wk-form4_1772676398.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026014961/wk-form4_1772676398.xml","form_type":"4"}},{"id":861399,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class B Common Stock","published_at":"2026-03-05T02:06:41.000Z","date":"2026-03-04","kind":"exercise","planned":false,"acquired":true,"shares":280000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."}],"balance_after":726117,"derivative":{"underlying":"Class A Common Stock","underlying_shares":280000},"source":{"system":"sec-edgar","filing":"0001628280-26-014961","document":"wk-form4_1772676398.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026014961/wk-form4_1772676398.xml","form_type":"4"}},{"id":861398,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2026-03-05T02:06:41.000Z","date":"2026-03-04","kind":"exercise","planned":false,"acquired":false,"shares":280000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"$851,804.80 was paid in cash by the reporting person as consideration for the aggregate option exercise."},{"field":"kind","element":"transactionCoding","label":"F3","text":"Represents an exercise of stock options in which the reporting person paid the exercise price of such options in cash. No shares were sold by the reporting person in connection with this transaction."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The stock options are fully vested."}],"balance_after":420000,"derivative":{"exercise_price":2.05,"expiration_date":"2027-10-03","underlying":"Class B Common Stock","underlying_shares":280000},"source":{"system":"sec-edgar","filing":"0001628280-26-014961","document":"wk-form4_1772676398.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026014961/wk-form4_1772676398.xml","form_type":"4"}},{"id":861397,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2026-03-05T02:06:41.000Z","date":"2026-03-04","kind":"exercise","planned":false,"acquired":true,"shares":220000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."}],"balance_after":1376320,"source":{"system":"sec-edgar","filing":"0001628280-26-014961","document":"wk-form4_1772676398.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026014961/wk-form4_1772676398.xml","form_type":"4"}},{"id":861396,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2026-03-05T02:06:41.000Z","date":"2026-03-04","kind":"exercise","planned":false,"acquired":true,"shares":280000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."}],"balance_after":1156320,"source":{"system":"sec-edgar","filing":"0001628280-26-014961","document":"wk-form4_1772676398.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026014961/wk-form4_1772676398.xml","form_type":"4"}},{"id":866863,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2026-03-04T00:45:47.000Z","date":"2026-03-03","kind":"sale","planned":false,"acquired":false,"shares":34071,"price":3.8203,"value":130161.4413,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary trade by the Reporting Person."}],"balance_after":876320,"source":{"system":"sec-edgar","filing":"0001628280-26-014276","document":"wk-form4_1772585144.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026014276/wk-form4_1772585144.xml","form_type":"4"}},{"id":866862,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2026-03-04T00:45:47.000Z","date":"2026-03-03","kind":"sale","planned":false,"acquired":false,"shares":72724,"price":3.8203,"value":277827.4972,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary trade by the Reporting Person."}],"balance_after":910391,"source":{"system":"sec-edgar","filing":"0001628280-26-014276","document":"wk-form4_1772585144.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026014276/wk-form4_1772585144.xml","form_type":"4"}},{"id":866861,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2026-03-04T00:45:47.000Z","date":"2026-03-03","kind":"sale","planned":false,"acquired":false,"shares":108543,"price":3.8203,"value":414666.8229,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary trade by the Reporting Person."}],"balance_after":983115,"source":{"system":"sec-edgar","filing":"0001628280-26-014276","document":"wk-form4_1772585144.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026014276/wk-form4_1772585144.xml","form_type":"4"}},{"id":866860,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-03-03T21:16:37.000Z","date":"2026-03-01","kind":"exercise","planned":false,"acquired":false,"shares":52316,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On January 28, 2026, the Reporting Person was granted 627,793 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On January 28, 2026, the Reporting Person was granted 627,793 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":1857159,"derivative":{"underlying":"Class A Common Stock","underlying_shares":52316},"source":{"system":"sec-edgar","filing":"0001628280-26-013830","document":"wk-form4_1772572585.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026013830/wk-form4_1772572585.xml","form_type":"4"}},{"id":866859,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-03-03T21:16:37.000Z","date":"2026-03-01","kind":"exercise","planned":false,"acquired":false,"shares":111667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On January 9, 2025, the Reporting Person was granted 1,340,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On January 9, 2025, the Reporting Person was granted 1,340,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":1909475,"derivative":{"underlying":"Class A Common Stock","underlying_shares":111667},"source":{"system":"sec-edgar","filing":"0001628280-26-013830","document":"wk-form4_1772572585.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026013830/wk-form4_1772572585.xml","form_type":"4"}},{"id":866858,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-03-03T21:16:37.000Z","date":"2026-03-01","kind":"exercise","planned":false,"acquired":false,"shares":166667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"On February 26, 2024, the Reporting Person was granted 2,000,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"On February 26, 2024, the Reporting Person was granted 2,000,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":2021142,"derivative":{"underlying":"Class A Common Stock","underlying_shares":166667},"source":{"system":"sec-edgar","filing":"0001628280-26-013830","document":"wk-form4_1772572585.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026013830/wk-form4_1772572585.xml","form_type":"4"}},{"id":866857,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2026-03-03T21:16:37.000Z","date":"2026-03-01","kind":"exercise","planned":false,"acquired":true,"shares":52316,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1091658,"source":{"system":"sec-edgar","filing":"0001628280-26-013830","document":"wk-form4_1772572585.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026013830/wk-form4_1772572585.xml","form_type":"4"}},{"id":866856,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2026-03-03T21:16:37.000Z","date":"2026-03-01","kind":"exercise","planned":false,"acquired":true,"shares":111667,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1039342,"source":{"system":"sec-edgar","filing":"0001628280-26-013830","document":"wk-form4_1772572585.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026013830/wk-form4_1772572585.xml","form_type":"4"}},{"id":866855,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2026-03-03T21:16:37.000Z","date":"2026-03-01","kind":"exercise","planned":false,"acquired":true,"shares":166667,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":927675,"source":{"system":"sec-edgar","filing":"0001628280-26-013830","document":"wk-form4_1772572585.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026013830/wk-form4_1772572585.xml","form_type":"4"}},{"id":926953,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-01-30T21:30:53.000Z","date":"2026-01-28","kind":"grant","planned":false,"acquired":true,"shares":627793,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The RSUs vest in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The RSUs vest in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":2187809,"derivative":{"underlying":"Class A Common Stock","underlying_shares":627793},"source":{"system":"sec-edgar","filing":"0001628280-26-004400","document":"wk-form4_1769808650.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828026004400/wk-form4_1769808650.xml","form_type":"4"}},{"id":983509,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-12-03T00:58:52.000Z","date":"2025-12-01","kind":"exercise","planned":false,"acquired":false,"shares":111666,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"On January 9, 2025, the Reporting Person was granted 1,340,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"On January 9, 2025, the Reporting Person was granted 1,340,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":1560016,"derivative":{"underlying":"Class A Common Stock","underlying_shares":111666},"source":{"system":"sec-edgar","filing":"0001628280-25-054886","document":"wk-form4_1764723529.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828025054886/wk-form4_1764723529.xml","form_type":"4"}},{"id":983508,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-12-03T00:58:52.000Z","date":"2025-12-01","kind":"exercise","planned":false,"acquired":false,"shares":166667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On February 26, 2024, the Reporting Person was granted 2,000,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On February 26, 2024, the Reporting Person was granted 2,000,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":1671682,"derivative":{"underlying":"Class A Common Stock","underlying_shares":166667},"source":{"system":"sec-edgar","filing":"0001628280-25-054886","document":"wk-form4_1764723529.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828025054886/wk-form4_1764723529.xml","form_type":"4"}},{"id":983507,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-12-03T00:58:52.000Z","date":"2025-12-01","kind":"exercise","planned":false,"acquired":false,"shares":107514,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On February 15, 2023, the Reporting Person was granted 1,290,168 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On February 15, 2023, the Reporting Person was granted 1,290,168 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":1838349,"derivative":{"underlying":"Class A Common Stock","underlying_shares":107514},"source":{"system":"sec-edgar","filing":"0001628280-25-054886","document":"wk-form4_1764723529.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828025054886/wk-form4_1764723529.xml","form_type":"4"}},{"id":983506,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-12-03T00:58:52.000Z","date":"2025-12-02","kind":"sale","planned":false,"acquired":false,"shares":57502,"price":7.4216,"value":426756.8432,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary trade by the Reporting Person."}],"balance_after":761008,"source":{"system":"sec-edgar","filing":"0001628280-25-054886","document":"wk-form4_1764723529.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828025054886/wk-form4_1764723529.xml","form_type":"4"}},{"id":983505,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-12-03T00:58:52.000Z","date":"2025-12-01","kind":"exercise","planned":false,"acquired":true,"shares":111666,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":818510,"source":{"system":"sec-edgar","filing":"0001628280-25-054886","document":"wk-form4_1764723529.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828025054886/wk-form4_1764723529.xml","form_type":"4"}},{"id":983504,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-12-03T00:58:52.000Z","date":"2025-12-02","kind":"sale","planned":false,"acquired":false,"shares":85824,"price":7.4216,"value":636951.3984,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary trade by the Reporting Person."}],"balance_after":706844,"source":{"system":"sec-edgar","filing":"0001628280-25-054886","document":"wk-form4_1764723529.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828025054886/wk-form4_1764723529.xml","form_type":"4"}},{"id":983503,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-12-03T00:58:52.000Z","date":"2025-12-01","kind":"exercise","planned":false,"acquired":true,"shares":166667,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":792668,"source":{"system":"sec-edgar","filing":"0001628280-25-054886","document":"wk-form4_1764723529.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828025054886/wk-form4_1764723529.xml","form_type":"4"}},{"id":983502,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-12-03T00:58:52.000Z","date":"2025-12-02","kind":"sale","planned":false,"acquired":false,"shares":55364,"price":7.4216,"value":410889.4624,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary trade by the Reporting Person."}],"balance_after":626001,"source":{"system":"sec-edgar","filing":"0001628280-25-054886","document":"wk-form4_1764723529.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828025054886/wk-form4_1764723529.xml","form_type":"4"}},{"id":983501,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-12-03T00:58:52.000Z","date":"2025-12-01","kind":"exercise","planned":false,"acquired":true,"shares":107514,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":681365,"source":{"system":"sec-edgar","filing":"0001628280-25-054886","document":"wk-form4_1764723529.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828025054886/wk-form4_1764723529.xml","form_type":"4"}},{"id":1004848,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class B Common Stock","published_at":"2025-11-07T23:57:49.000Z","date":"2025-11-07","kind":"exercise","planned":false,"acquired":false,"shares":200000,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Shares held of record by James Reinhart and Michele Reinhart as Trustees of the Costanoa Family Trust dated July 22 2015 as amended (the \"2015 Costanoa Trust\")."}],"balance_after":2383795,"derivative":{"underlying":"Class A Common Stock","underlying_shares":200000},"source":{"system":"sec-edgar","filing":"0001628280-25-050758","document":"wk-form4_1762559866.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828025050758/wk-form4_1762559866.xml","form_type":"4"}},{"id":1004847,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-11-07T23:57:49.000Z","date":"2025-11-07","kind":"sale","planned":false,"acquired":false,"shares":379826,"price":7.932,"value":3012779.832,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $7.78 to $8.10 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."}],"balance_after":573851,"source":{"system":"sec-edgar","filing":"0001628280-25-050758","document":"wk-form4_1762559866.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828025050758/wk-form4_1762559866.xml","form_type":"4"}},{"id":1004846,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-11-07T23:57:49.000Z","date":"2025-11-07","kind":"sale","planned":false,"acquired":false,"shares":200000,"price":7.9492,"value":1589840.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $7.88 to $8.095 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Shares held of record by James Reinhart and Michele Reinhart as Trustees of the Costanoa Family Trust dated July 22 2015 as amended (the \"2015 Costanoa Trust\")."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001628280-25-050758","document":"wk-form4_1762559866.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828025050758/wk-form4_1762559866.xml","form_type":"4"}},{"id":1004845,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-11-07T23:57:49.000Z","date":"2025-11-07","kind":"exercise","planned":false,"acquired":true,"shares":200000,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Shares held of record by James Reinhart and Michele Reinhart as Trustees of the Costanoa Family Trust dated July 22 2015 as amended (the \"2015 Costanoa Trust\")."}],"balance_after":200000,"source":{"system":"sec-edgar","filing":"0001628280-25-050758","document":"wk-form4_1762559866.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000162828025050758/wk-form4_1762559866.xml","form_type":"4"}},{"id":1049534,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-09-03T21:26:34.000Z","date":"2025-09-01","kind":"exercise","planned":false,"acquired":false,"shares":111667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"On January 9, 2025, the Reporting Person was granted 1,340,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"On January 9, 2025, the Reporting Person was granted 1,340,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":1945863,"derivative":{"underlying":"Class A Common Stock","underlying_shares":111667},"source":{"system":"sec-edgar","filing":"0001484778-25-000107","document":"wk-form4_1756934790.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000107/wk-form4_1756934790.xml","form_type":"4"}},{"id":1049533,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-09-03T21:26:34.000Z","date":"2025-09-01","kind":"exercise","planned":false,"acquired":false,"shares":166666,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On February 26, 2024, the Reporting Person was granted 2,000,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On February 26, 2024, the Reporting Person was granted 2,000,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":2057530,"derivative":{"underlying":"Class A Common Stock","underlying_shares":166666},"source":{"system":"sec-edgar","filing":"0001484778-25-000107","document":"wk-form4_1756934790.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000107/wk-form4_1756934790.xml","form_type":"4"}},{"id":1049532,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-09-03T21:26:34.000Z","date":"2025-09-01","kind":"exercise","planned":false,"acquired":false,"shares":107514,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On February 15, 2023, the Reporting Person was granted 1,290,168 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On February 15, 2023, the Reporting Person was granted 1,290,168 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":2224196,"derivative":{"underlying":"Class A Common Stock","underlying_shares":107514},"source":{"system":"sec-edgar","filing":"0001484778-25-000107","document":"wk-form4_1756934790.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000107/wk-form4_1756934790.xml","form_type":"4"}},{"id":1049531,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-09-03T21:26:34.000Z","date":"2025-09-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":56705,"price":10.82,"value":613548.1,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares of Class A Common Stock that were withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of RSUs."}],"balance_after":953677,"source":{"system":"sec-edgar","filing":"0001484778-25-000107","document":"wk-form4_1756934790.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000107/wk-form4_1756934790.xml","form_type":"4"}},{"id":1049530,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-09-03T21:26:34.000Z","date":"2025-09-01","kind":"exercise","planned":false,"acquired":true,"shares":111667,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1010382,"source":{"system":"sec-edgar","filing":"0001484778-25-000107","document":"wk-form4_1756934790.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000107/wk-form4_1756934790.xml","form_type":"4"}},{"id":1049529,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-09-03T21:26:34.000Z","date":"2025-09-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":84633,"price":10.82,"value":915729.06,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares of Class A Common Stock that were withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of RSUs."}],"balance_after":898715,"source":{"system":"sec-edgar","filing":"0001484778-25-000107","document":"wk-form4_1756934790.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000107/wk-form4_1756934790.xml","form_type":"4"}},{"id":1049528,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-09-03T21:26:34.000Z","date":"2025-09-01","kind":"exercise","planned":false,"acquired":true,"shares":166666,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":983348,"source":{"system":"sec-edgar","filing":"0001484778-25-000107","document":"wk-form4_1756934790.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000107/wk-form4_1756934790.xml","form_type":"4"}},{"id":1049527,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-09-03T21:26:34.000Z","date":"2025-09-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":54596,"price":10.82,"value":590728.72,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares of Class A Common Stock that were withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of RSUs."}],"balance_after":816682,"source":{"system":"sec-edgar","filing":"0001484778-25-000107","document":"wk-form4_1756934790.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000107/wk-form4_1756934790.xml","form_type":"4"}},{"id":1049526,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-09-03T21:26:34.000Z","date":"2025-09-01","kind":"exercise","planned":false,"acquired":true,"shares":107514,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":871278,"source":{"system":"sec-edgar","filing":"0001484778-25-000107","document":"wk-form4_1756934790.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000107/wk-form4_1756934790.xml","form_type":"4"}},{"id":1071321,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-08-08T22:56:53.000Z","date":"2025-08-08","kind":"sale","planned":false,"acquired":false,"shares":406372,"price":9.9087,"value":4026618.2364,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $9.75 to $10.00 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."}],"balance_after":763764,"source":{"system":"sec-edgar","filing":"0001484778-25-000088","document":"wk-form4_1754693810.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000088/wk-form4_1754693810.xml","form_type":"4"}},{"id":1071320,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-08-08T22:56:53.000Z","date":"2025-08-06","kind":"sale","planned":false,"acquired":false,"shares":158514,"price":10.2001,"value":1616858.6514,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $10.20 to $10.23 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."}],"balance_after":1170136,"source":{"system":"sec-edgar","filing":"0001484778-25-000088","document":"wk-form4_1754693810.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000088/wk-form4_1754693810.xml","form_type":"4"}},{"id":1127598,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-06-02T21:23:30.000Z","date":"2025-06-01","kind":"exercise","planned":false,"acquired":false,"shares":111667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"On January 9, 2025, the Reporting Person was granted 1,340,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"On January 9, 2025, the Reporting Person was granted 1,340,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":2331710,"derivative":{"underlying":"Class A Common Stock","underlying_shares":111667},"source":{"system":"sec-edgar","filing":"0001484778-25-000072","document":"wk-form4_1748899404.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000072/wk-form4_1748899404.xml","form_type":"4"}},{"id":1127597,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-06-02T21:23:30.000Z","date":"2025-06-01","kind":"exercise","planned":false,"acquired":false,"shares":166667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On February 26, 2024, the Reporting Person was granted 2,000,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On February 26, 2024, the Reporting Person was granted 2,000,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":2443377,"derivative":{"underlying":"Class A Common Stock","underlying_shares":166667},"source":{"system":"sec-edgar","filing":"0001484778-25-000072","document":"wk-form4_1748899404.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000072/wk-form4_1748899404.xml","form_type":"4"}},{"id":1127596,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-06-02T21:23:30.000Z","date":"2025-06-01","kind":"exercise","planned":false,"acquired":false,"shares":107514,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On February 15, 2023, the Reporting Person was granted 1,290,168 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On February 15, 2023, the Reporting Person was granted 1,290,168 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":2610044,"derivative":{"underlying":"Class A Common Stock","underlying_shares":107514},"source":{"system":"sec-edgar","filing":"0001484778-25-000072","document":"wk-form4_1748899404.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000072/wk-form4_1748899404.xml","form_type":"4"}},{"id":1127595,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-06-02T21:23:30.000Z","date":"2025-06-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":56705,"price":7.2,"value":408276.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares of Class A Common Stock that were withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of RSUs."}],"balance_after":1328650,"source":{"system":"sec-edgar","filing":"0001484778-25-000072","document":"wk-form4_1748899404.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000072/wk-form4_1748899404.xml","form_type":"4"}},{"id":1127594,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-06-02T21:23:30.000Z","date":"2025-06-01","kind":"exercise","planned":false,"acquired":true,"shares":111667,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1385355,"source":{"system":"sec-edgar","filing":"0001484778-25-000072","document":"wk-form4_1748899404.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000072/wk-form4_1748899404.xml","form_type":"4"}},{"id":1127593,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-06-02T21:23:30.000Z","date":"2025-06-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":84634,"price":7.2,"value":609364.8,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares of Class A Common Stock that were withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of RSUs."}],"balance_after":1273688,"source":{"system":"sec-edgar","filing":"0001484778-25-000072","document":"wk-form4_1748899404.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000072/wk-form4_1748899404.xml","form_type":"4"}},{"id":1127592,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-06-02T21:23:30.000Z","date":"2025-06-01","kind":"exercise","planned":false,"acquired":true,"shares":166667,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1358322,"source":{"system":"sec-edgar","filing":"0001484778-25-000072","document":"wk-form4_1748899404.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000072/wk-form4_1748899404.xml","form_type":"4"}},{"id":1127591,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-06-02T21:23:30.000Z","date":"2025-06-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":54596,"price":7.2,"value":393091.2,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares of Class A Common Stock that were withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of RSUs."}],"balance_after":1191655,"source":{"system":"sec-edgar","filing":"0001484778-25-000072","document":"wk-form4_1748899404.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000072/wk-form4_1748899404.xml","form_type":"4"}},{"id":1127590,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-06-02T21:23:30.000Z","date":"2025-06-01","kind":"exercise","planned":false,"acquired":true,"shares":107514,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1246251,"source":{"system":"sec-edgar","filing":"0001484778-25-000072","document":"wk-form4_1748899404.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000072/wk-form4_1748899404.xml","form_type":"4"}},{"id":1155032,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-05-08T21:22:05.000Z","date":"2025-05-07","kind":"sale","planned":false,"acquired":false,"shares":276378,"price":6.2886,"value":1738030.6908,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $6.00 to $6.52 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."}],"balance_after":1138737,"source":{"system":"sec-edgar","filing":"0001484778-25-000053","document":"wk-form4_1746739319.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000053/wk-form4_1746739319.xml","form_type":"4"}},{"id":1228183,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-03-04T22:20:36.000Z","date":"2025-03-01","kind":"exercise","planned":false,"acquired":false,"shares":111666,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"On January 9, 2025, the Reporting Person was granted 1,340,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"On January 9, 2025, the Reporting Person was granted 1,340,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":2717558,"derivative":{"underlying":"Class A Common Stock","underlying_shares":111666},"source":{"system":"sec-edgar","filing":"0001484778-25-000027","document":"wk-form4_1741126828.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000027/wk-form4_1741126828.xml","form_type":"4"}},{"id":1228182,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-03-04T22:20:36.000Z","date":"2025-03-01","kind":"exercise","planned":false,"acquired":false,"shares":166667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"On February 26, 2024, the Reporting Person was granted 2,000,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"On February 26, 2024, the Reporting Person was granted 2,000,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":2829224,"derivative":{"underlying":"Class A Common Stock","underlying_shares":166667},"source":{"system":"sec-edgar","filing":"0001484778-25-000027","document":"wk-form4_1741126828.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000027/wk-form4_1741126828.xml","form_type":"4"}},{"id":1228181,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-03-04T22:20:36.000Z","date":"2025-03-01","kind":"exercise","planned":false,"acquired":false,"shares":107514,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On February 15, 2023, the Reporting Person was granted 1,290,168 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On February 15, 2023, the Reporting Person was granted 1,290,168 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":2995891,"derivative":{"underlying":"Class A Common Stock","underlying_shares":107514},"source":{"system":"sec-edgar","filing":"0001484778-25-000027","document":"wk-form4_1741126828.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000027/wk-form4_1741126828.xml","form_type":"4"}},{"id":1228180,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-03-04T22:20:36.000Z","date":"2025-03-01","kind":"exercise","planned":false,"acquired":false,"shares":76766,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On April 11, 2022, the Reporting Person was granted 850,329 RSUs, which vested 6.25% in quarterly installments on each of June 1, 2022, September 1, 2022 and December 1, 2022, and beginning on March 1, 2023, vest 9.03% in quarterly installments on March 1, June 1, September 1 and December 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On April 11, 2022, the Reporting Person was granted 850,329 RSUs, which vested 6.25% in quarterly installments on each of June 1, 2022, September 1, 2022 and December 1, 2022, and beginning on March 1, 2023, vest 9.03% in quarterly installments on March 1, June 1, September 1 and December 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":3103405,"derivative":{"underlying":"Class A Common Stock","underlying_shares":76766},"source":{"system":"sec-edgar","filing":"0001484778-25-000027","document":"wk-form4_1741126828.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000027/wk-form4_1741126828.xml","form_type":"4"}},{"id":1228179,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-03-04T22:20:36.000Z","date":"2025-03-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":56704,"price":2.36,"value":133821.44,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares of Class A Common Stock that were withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of RSUs."}],"balance_after":1415115,"source":{"system":"sec-edgar","filing":"0001484778-25-000027","document":"wk-form4_1741126828.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000027/wk-form4_1741126828.xml","form_type":"4"}},{"id":1228178,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-03-04T22:20:36.000Z","date":"2025-03-01","kind":"exercise","planned":false,"acquired":true,"shares":111666,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1471819,"source":{"system":"sec-edgar","filing":"0001484778-25-000027","document":"wk-form4_1741126828.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000027/wk-form4_1741126828.xml","form_type":"4"}},{"id":1228177,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-03-04T22:20:36.000Z","date":"2025-03-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":84634,"price":2.36,"value":199736.24,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares of Class A Common Stock that were withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of RSUs."}],"balance_after":1360153,"source":{"system":"sec-edgar","filing":"0001484778-25-000027","document":"wk-form4_1741126828.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000027/wk-form4_1741126828.xml","form_type":"4"}},{"id":1228176,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-03-04T22:20:36.000Z","date":"2025-03-01","kind":"exercise","planned":false,"acquired":true,"shares":166667,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1444787,"source":{"system":"sec-edgar","filing":"0001484778-25-000027","document":"wk-form4_1741126828.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000027/wk-form4_1741126828.xml","form_type":"4"}},{"id":1228175,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-03-04T22:20:36.000Z","date":"2025-03-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":54596,"price":2.36,"value":128846.56,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares of Class A Common Stock that were withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of RSUs."}],"balance_after":1278120,"source":{"system":"sec-edgar","filing":"0001484778-25-000027","document":"wk-form4_1741126828.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000027/wk-form4_1741126828.xml","form_type":"4"}},{"id":1228174,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-03-04T22:20:36.000Z","date":"2025-03-01","kind":"exercise","planned":false,"acquired":true,"shares":107514,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1332716,"source":{"system":"sec-edgar","filing":"0001484778-25-000027","document":"wk-form4_1741126828.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000027/wk-form4_1741126828.xml","form_type":"4"}},{"id":1228173,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-03-04T22:20:36.000Z","date":"2025-03-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":38982,"price":2.36,"value":91997.52,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares of Class A Common Stock that were withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of RSUs."}],"balance_after":1225202,"source":{"system":"sec-edgar","filing":"0001484778-25-000027","document":"wk-form4_1741126828.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000027/wk-form4_1741126828.xml","form_type":"4"}},{"id":1228172,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2025-03-04T22:20:36.000Z","date":"2025-03-01","kind":"exercise","planned":false,"acquired":true,"shares":76766,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1264184,"source":{"system":"sec-edgar","filing":"0001484778-25-000027","document":"wk-form4_1741126828.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000027/wk-form4_1741126828.xml","form_type":"4"}},{"id":1305159,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-01-10T14:12:23.000Z","date":"2025-01-09","kind":"grant","planned":false,"acquired":true,"shares":1340000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The RSUs vest in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The RSUs vest in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":3180171,"derivative":{"underlying":"Class A Common Stock","underlying_shares":1340000},"source":{"system":"sec-edgar","filing":"0001484778-25-000009","document":"wk-form4_1736518336.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477825000009/wk-form4_1736518336.xml","form_type":"4"}},{"id":1335514,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class B Common Stock","published_at":"2024-12-11T21:30:28.000Z","date":"2024-12-11","kind":"gift","planned":false,"acquired":true,"shares":106700,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."},{"field":"kind","element":"transactionCoding","label":"F2","text":"These shares were held by a trust for the benefit of Mr. Reinhart's family and of which the trustee was an independent institution.  On December 11, 2024, this trust was dissolved and its assets, consisting of 106,700 of the Issuer's Class B Common stock were transferred, for no consideration to the 2017 Costanoa GST Trust (defined in footnote 3 below)."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"These shares were held by a trust for the benefit of Mr. Reinhart's family and of which the trustee was an independent institution.  On December 11, 2024, this trust was dissolved and its assets, consisting of 106,700 of the Issuer's Class B Common stock were transferred, for no consideration to the 2017 Costanoa GST Trust (defined in footnote 3 below)."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Shares held of record by James Reinhart and Michele Reinhart as Trustees of The Costanoa 2017 Irrevocable GST Trust (the \"2017 Costanoa GST Trust\")."}],"balance_after":444629,"derivative":{"underlying":"Class A Common Stock","underlying_shares":106700},"source":{"system":"sec-edgar","filing":"0001484778-24-000183","document":"wk-form4_1733952621.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477824000183/wk-form4_1733952621.xml","form_type":"4"}},{"id":1335513,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class B Common Stock","published_at":"2024-12-11T21:30:28.000Z","date":"2024-12-11","kind":"gift","planned":false,"acquired":false,"shares":106700,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."},{"field":"kind","element":"transactionCoding","label":"F2","text":"These shares were held by a trust for the benefit of Mr. Reinhart's family and of which the trustee was an independent institution.  On December 11, 2024, this trust was dissolved and its assets, consisting of 106,700 of the Issuer's Class B Common stock were transferred, for no consideration to the 2017 Costanoa GST Trust (defined in footnote 3 below)."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"These shares were held by a trust for the benefit of Mr. Reinhart's family and of which the trustee was an independent institution.  On December 11, 2024, this trust was dissolved and its assets, consisting of 106,700 of the Issuer's Class B Common stock were transferred, for no consideration to the 2017 Costanoa GST Trust (defined in footnote 3 below)."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These shares were held by a trust for the benefit of Mr. Reinhart's family and of which the trustee was an independent institution.  On December 11, 2024, this trust was dissolved and its assets, consisting of 106,700 of the Issuer's Class B Common stock were transferred, for no consideration to the 2017 Costanoa GST Trust (defined in footnote 3 below)."}],"balance_after":0,"derivative":{"underlying":"Class A Common Stock","underlying_shares":106700},"source":{"system":"sec-edgar","filing":"0001484778-24-000183","document":"wk-form4_1733952621.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477824000183/wk-form4_1733952621.xml","form_type":"4"}},{"id":1347133,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2024-12-02T21:20:19.000Z","date":"2024-12-01","kind":"exercise","planned":false,"acquired":false,"shares":166666,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"On February 26, 2024, the Reporting Person was granted 2,000,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"On February 26, 2024, the Reporting Person was granted 2,000,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":1840171,"derivative":{"underlying":"Class A Common Stock","underlying_shares":166666},"source":{"system":"sec-edgar","filing":"0001484778-24-000174","document":"wk-form4_1733174412.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477824000174/wk-form4_1733174412.xml","form_type":"4"}},{"id":1347132,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2024-12-02T21:20:19.000Z","date":"2024-12-01","kind":"exercise","planned":false,"acquired":false,"shares":107514,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On February 15, 2023, the Reporting Person was granted 1,290,168 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On February 15, 2023, the Reporting Person was granted 1,290,168 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":2006837,"derivative":{"underlying":"Class A Common Stock","underlying_shares":107514},"source":{"system":"sec-edgar","filing":"0001484778-24-000174","document":"wk-form4_1733174412.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477824000174/wk-form4_1733174412.xml","form_type":"4"}},{"id":1347131,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2024-12-02T21:20:19.000Z","date":"2024-12-01","kind":"exercise","planned":false,"acquired":false,"shares":76766,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On April 11, 2022, the Reporting Person was granted 850,329 RSUs, which vested 6.25% in quarterly installments on each of June 1, 2022, September 1, 2022 and December 1, 2022, and beginning on March 1, 2023, vest 9.03% in quarterly installments on March 1, June 1, September 1 and December 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On April 11, 2022, the Reporting Person was granted 850,329 RSUs, which vested 6.25% in quarterly installments on each of June 1, 2022, September 1, 2022 and December 1, 2022, and beginning on March 1, 2023, vest 9.03% in quarterly installments on March 1, June 1, September 1 and December 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":2114351,"derivative":{"underlying":"Class A Common Stock","underlying_shares":76766},"source":{"system":"sec-edgar","filing":"0001484778-24-000174","document":"wk-form4_1733174412.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477824000174/wk-form4_1733174412.xml","form_type":"4"}},{"id":1347130,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2024-12-02T21:20:19.000Z","date":"2024-12-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":84467,"price":1.73,"value":146127.91,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares of Class A Common Stock that were withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of RSUs."}],"balance_after":1187418,"source":{"system":"sec-edgar","filing":"0001484778-24-000174","document":"wk-form4_1733174412.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477824000174/wk-form4_1733174412.xml","form_type":"4"}},{"id":1347129,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2024-12-02T21:20:19.000Z","date":"2024-12-01","kind":"exercise","planned":false,"acquired":true,"shares":166666,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1271885,"source":{"system":"sec-edgar","filing":"0001484778-24-000174","document":"wk-form4_1733174412.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477824000174/wk-form4_1733174412.xml","form_type":"4"}},{"id":1347128,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2024-12-02T21:20:19.000Z","date":"2024-12-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":54489,"price":1.73,"value":94265.97,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares of Class A Common Stock that were withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of RSUs."}],"balance_after":1105219,"source":{"system":"sec-edgar","filing":"0001484778-24-000174","document":"wk-form4_1733174412.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477824000174/wk-form4_1733174412.xml","form_type":"4"}},{"id":1347127,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2024-12-02T21:20:19.000Z","date":"2024-12-01","kind":"exercise","planned":false,"acquired":true,"shares":107514,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1159708,"source":{"system":"sec-edgar","filing":"0001484778-24-000174","document":"wk-form4_1733174412.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477824000174/wk-form4_1733174412.xml","form_type":"4"}},{"id":1347126,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2024-12-02T21:20:19.000Z","date":"2024-12-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":38906,"price":1.73,"value":67307.38,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares of Class A Common Stock that were withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of RSUs."}],"balance_after":1052194,"source":{"system":"sec-edgar","filing":"0001484778-24-000174","document":"wk-form4_1733174412.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477824000174/wk-form4_1733174412.xml","form_type":"4"}},{"id":1347125,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2024-12-02T21:20:19.000Z","date":"2024-12-01","kind":"exercise","planned":false,"acquired":true,"shares":76766,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1091100,"source":{"system":"sec-edgar","filing":"0001484778-24-000174","document":"wk-form4_1733174412.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477824000174/wk-form4_1733174412.xml","form_type":"4"}},{"id":1417669,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2024-09-03T22:43:18.000Z","date":"2024-09-01","kind":"exercise","planned":false,"acquired":false,"shares":166667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"On February 26, 2024, the Reporting Person was granted 2,000,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"On February 26, 2024, the Reporting Person was granted 2,000,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":2191117,"derivative":{"underlying":"Class A Common Stock","underlying_shares":166667},"source":{"system":"sec-edgar","filing":"0001484778-24-000127","document":"wk-form4_1725403391.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477824000127/wk-form4_1725403391.xml","form_type":"4"}},{"id":1417668,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2024-09-03T22:43:18.000Z","date":"2024-09-01","kind":"exercise","planned":false,"acquired":false,"shares":107514,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On February 15, 2023, the Reporting Person was granted 1,290,168 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On February 15, 2023, the Reporting Person was granted 1,290,168 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":2357784,"derivative":{"underlying":"Class A Common Stock","underlying_shares":107514},"source":{"system":"sec-edgar","filing":"0001484778-24-000127","document":"wk-form4_1725403391.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477824000127/wk-form4_1725403391.xml","form_type":"4"}},{"id":1417667,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2024-09-03T22:43:18.000Z","date":"2024-09-01","kind":"exercise","planned":false,"acquired":false,"shares":76766,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On April 11, 2022, the Reporting Person was granted 850,329 RSUs, which vested 6.25% in quarterly installments on each of June 1, 2022, September 1, 2022 and December 1, 2022, and beginning on March 1, 2023, vest 9.03% in quarterly installments on March 1, June 1, September 1 and December 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On April 11, 2022, the Reporting Person was granted 850,329 RSUs, which vested 6.25% in quarterly installments on each of June 1, 2022, September 1, 2022 and December 1, 2022, and beginning on March 1, 2023, vest 9.03% in quarterly installments on March 1, June 1, September 1 and December 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date."}],"balance_after":2465298,"derivative":{"underlying":"Class A Common Stock","underlying_shares":76766},"source":{"system":"sec-edgar","filing":"0001484778-24-000127","document":"wk-form4_1725403391.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477824000127/wk-form4_1725403391.xml","form_type":"4"}},{"id":1417666,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2024-09-03T22:43:18.000Z","date":"2024-09-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":84467,"price":0.914,"value":77202.838,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares of Class A Common Stock that were withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of RSUs."}],"balance_after":1014334,"source":{"system":"sec-edgar","filing":"0001484778-24-000127","document":"wk-form4_1725403391.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477824000127/wk-form4_1725403391.xml","form_type":"4"}},{"id":1417665,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2024-09-03T22:43:18.000Z","date":"2024-09-01","kind":"exercise","planned":false,"acquired":true,"shares":166667,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1098801,"source":{"system":"sec-edgar","filing":"0001484778-24-000127","document":"wk-form4_1725403391.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477824000127/wk-form4_1725403391.xml","form_type":"4"}},{"id":1417664,"issuer":{"id":1057,"kind":"organization","name":"ThredUp Inc.","symbol":"TDUP"},"owners":[{"id":1060,"kind":"person","name":"Reinhart James G.","position":1,"cik":"0001849447","reported_name":"Reinhart James G.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2024-09-03T22:43:18.000Z","date":"2024-09-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":54489,"price":0.914,"value":49802.946,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares of Class A Common Stock that were withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of RSUs."}],"balance_after":932134,"source":{"system":"sec-edgar","filing":"0001484778-24-000127","document":"wk-form4_1725403391.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1484778/000148477824000127/wk-form4_1725403391.xml","form_type":"4"}}],"next_cursor":"2024-09-03T22:43:18.000000Z,1417664"}