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Following certification by the Compensation Committee of the Issuer of the applicable performance criteria, the Reporting Person vested 600,000 options."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"On December 30, 2019, the Reporting Person was granted a number of performance-vesting stock options, with the options to be vested/earned ranging from 180,000 to 600,000 based on the Company's 2020 Adjusted EBITDA achievement (\"performance criteria\"). Following certification by the Compensation Committee of the Issuer of the applicable performance criteria, the Reporting Person vested 600,000 options."}],"balance_after":1200000,"derivative":{"exercise_price":2.12,"expiration_date":"2029-12-29","underlying":"Common Stock","underlying_shares":600000},"source":{"system":"sec-edgar","filing":"0001567619-21-006137","document":"doc1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1378950/000156761921006137/doc1.xml","form_type":"4"}},{"id":2948206,"issuer":{"id":7113,"kind":"organization","name":"CarParts.com, Inc.","symbol":"PRTS"},"owners":[{"id":141477,"kind":"person","name":"Nia Mehran","position":1,"cik":"0001386428","reported_name":"Nia Mehran","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-12-12T01:23:58.000Z","date":"2020-12-09","kind":"sale","acquired":false,"shares":20000,"price":15.05,"value":301000.0,"ownership":{"direct":false,"nature":"By domestic partner"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"A portion of the sale proceeds will be used by the Reporting Person to satisfy tax liabilities."}],"balance_after":191437,"source":{"system":"sec-edgar","filing":"0001567619-20-020998","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1378950/000156761920020998/doc1.xml","form_type":"4"}},{"id":2948202,"issuer":{"id":7113,"kind":"organization","name":"CarParts.com, Inc.","symbol":"PRTS"},"owners":[{"id":141477,"kind":"person","name":"Nia Mehran","position":1,"cik":"0001386428","reported_name":"Nia Mehran","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-12-11T22:41:56.000Z","date":"2020-12-11","kind":"sale","acquired":false,"shares":180880,"price":13.57,"value":2454541.6,"ownership":{"direct":false,"nature":"Nia Living Trust Established September 2, 2004"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"A portion of the sale proceeds will be used by the Reporting Person to satisfy tax liabilities."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported above reflects the weighted-average sale price for each day, with the low and high price from the range of prices shown as follows: December 9, 2020: Low price of $14.45 and a high price of $15.58;  December 10, 2020: Low price of $13.50 and a high price of $14.04; and December 11, 2020: Low price of $13.50 and a high price of $13.82.  The Reporting Person undertakes to provide to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth herein."}],"balance_after":1666937,"source":{"system":"sec-edgar","filing":"0001567619-20-020991","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1378950/000156761920020991/doc1.xml","form_type":"4"}},{"id":2948201,"issuer":{"id":7113,"kind":"organization","name":"CarParts.com, Inc.","symbol":"PRTS"},"owners":[{"id":141477,"kind":"person","name":"Nia Mehran","position":1,"cik":"0001386428","reported_name":"Nia Mehran","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-12-11T22:41:56.000Z","date":"2020-12-10","kind":"sale","acquired":false,"shares":184624,"price":13.6,"value":2510886.4,"ownership":{"direct":false,"nature":"Nia Living Trust Established September 2, 2004"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"A portion of the sale proceeds will be used by the Reporting Person to satisfy tax liabilities."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported above reflects the weighted-average sale price for each day, with the low and high price from the range of prices shown as follows: December 9, 2020: Low price of $14.45 and a high price of $15.58;  December 10, 2020: Low price of $13.50 and a high price of $14.04; and December 11, 2020: Low price of $13.50 and a high price of $13.82.  The Reporting Person undertakes to provide to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth herein."}],"balance_after":1847817,"source":{"system":"sec-edgar","filing":"0001567619-20-020991","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1378950/000156761920020991/doc1.xml","form_type":"4"}},{"id":2948200,"issuer":{"id":7113,"kind":"organization","name":"CarParts.com, Inc.","symbol":"PRTS"},"owners":[{"id":141477,"kind":"person","name":"Nia Mehran","position":1,"cik":"0001386428","reported_name":"Nia Mehran","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-12-11T22:41:56.000Z","date":"2020-12-09","kind":"sale","acquired":false,"shares":230900,"price":14.84,"value":3426556.0,"ownership":{"direct":false,"nature":"Nia Living Trust Established September 2, 2004"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"A portion of the sale proceeds will be used by the Reporting Person to satisfy tax liabilities."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported above reflects the weighted-average sale price for each day, with the low and high price from the range of prices shown as follows: December 9, 2020: Low price of $14.45 and a high price of $15.58;  December 10, 2020: Low price of $13.50 and a high price of $14.04; and December 11, 2020: Low price of $13.50 and a high price of $13.82.  The Reporting Person undertakes to provide to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth herein."}],"balance_after":2032441,"source":{"system":"sec-edgar","filing":"0001567619-20-020991","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1378950/000156761920020991/doc1.xml","form_type":"4"}},{"id":3050806,"issuer":{"id":7113,"kind":"organization","name":"CarParts.com, Inc.","symbol":"PRTS"},"owners":[{"id":141477,"kind":"person","name":"Nia Mehran","position":1,"cik":"0001386428","reported_name":"Nia Mehran","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-08-20T21:53:44.000Z","date":"2020-08-18","kind":"sale","acquired":false,"shares":2000000,"price":13,"value":26000000.0,"ownership":{"direct":false,"nature":"Nia Living Trust Established September 2, 2004"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On August 18, 2020, the Reporting Person sold 2,000,000 shares of the Company's Common Stock (the \"Shares\") held by the Nia Living Trust Established September 2, 2004 (the \"Living Trust\") in connection with Mehran Nia's divorce settlement. The Shares were sold pursuant to an underwriting agreement among the Company, Mehran Nia and RBC Capital Markets, LLC, as representative of the several underwriters listed therein."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"On August 18, 2020, in an underwritten offering of the Issuer's Common Stock by the Company and Mehran Nia, the Living Trust sold an aggregate amount of 2,000,000 shares of Common Stock for a price per share of $13.00. Such price per share does not reflect underwriter discounts or fees."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Pursuant to a divorce settlement between Mehran Nia and his spouse, Fariba Nia, the Living Trust previously transferred 500,000 shares to Fariba Nia."}],"balance_after":2263341,"source":{"system":"sec-edgar","filing":"0001567619-20-015843","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1378950/000156761920015843/doc1.xml","form_type":"4"}},{"id":3101674,"issuer":{"id":7113,"kind":"organization","name":"CarParts.com, Inc.","symbol":"PRTS"},"owners":[{"id":141477,"kind":"person","name":"Nia Mehran","position":1,"cik":"0001386428","reported_name":"Nia Mehran","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series A Convertible Preferred 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