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These shares were sold in multiple transactions at prices ranging from $40.13 to $40.72 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"The shares are owned directly by The RWS 2006 Family Trust. The Reporting Person, a director of the Issuer, is a co-trustee of The RWS 2006 Family Trust and may be deemed to be an indirect beneficial owner of the shares held by The RWS 2006 Family Trust. The Reporting Person expressly disclaims beneficial ownership of the shares held by The RWS 2006 Family Trust and this report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose."}],"balance_after":1595770,"source":{"system":"sec-edgar","filing":"0001209191-19-010661","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000120919119010661/doc4.xml","form_type":"4"}},{"id":3653893,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98541,"kind":"person","name":"Parafestas Anastasios","position":1,"cik":"0001556198","reported_name":"Parafestas Anastasios","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":160184,"kind":"organization","name":"Argonaut 22 LLC","position":2,"cik":"0001718998","reported_name":"Argonaut 22 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":3,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2019-02-15T21:47:00.000Z","date":"2019-02-13","kind":"sale","acquired":false,"shares":5000,"price":40.44,"value":202200.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F5","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by The RWS 2006 Family Trust."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $40.27 to $40.61 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"The shares are owned directly by The RWS 2006 Family Trust. The Reporting Person, a director of the Issuer, is a co-trustee of The RWS 2006 Family Trust and may be deemed to be an indirect beneficial owner of the shares held by The RWS 2006 Family Trust. The Reporting Person expressly disclaims beneficial ownership of the shares held by The RWS 2006 Family Trust and this report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose."}],"balance_after":1598123,"source":{"system":"sec-edgar","filing":"0001209191-19-010661","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000120919119010661/doc4.xml","form_type":"4"}},{"id":3653892,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98541,"kind":"person","name":"Parafestas Anastasios","position":1,"cik":"0001556198","reported_name":"Parafestas Anastasios","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":160184,"kind":"organization","name":"Argonaut 22 LLC","position":2,"cik":"0001718998","reported_name":"Argonaut 22 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":3,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2019-02-15T21:47:00.000Z","date":"2019-02-14","kind":"sale","acquired":false,"shares":11647,"price":40.38,"value":470305.86,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by Argonaut 22 LLC."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $40.13 to $40.72 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. Spinnaker Capital LLC is the Managing Member of Argonaut 22 LLC and the Reporting Person, a director of the Issuer, is the Managing Member of Spinnaker Capital LLC. 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These shares were sold in multiple transactions at prices ranging from $40.27 to $40.61 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. Spinnaker Capital LLC is the Managing Member of Argonaut 22 LLC and the Reporting Person, a director of the Issuer, is the Managing Member of Spinnaker Capital LLC. 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The Reporting Person expressly disclaims beneficial ownership of the shares held by The RWS 2006 Family Trust and this report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose."}],"balance_after":1603123,"source":{"system":"sec-edgar","filing":"0001209191-19-009843","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000120919119009843/doc4.xml","form_type":"4"}},{"id":3660610,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98541,"kind":"person","name":"Parafestas Anastasios","position":1,"cik":"0001556198","reported_name":"Parafestas Anastasios","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":160184,"kind":"organization","name":"Argonaut 22 LLC","position":2,"cik":"0001718998","reported_name":"Argonaut 22 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":3,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2019-02-13T23:09:57.000Z","date":"2019-02-11","kind":"sale","acquired":false,"shares":567,"price":40.11,"value":22742.37,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F6","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by The RWS 2006 Family Trust."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. 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The Reporting Person expressly disclaims beneficial ownership of the shares held by The RWS 2006 Family Trust and this report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose."}],"balance_after":1608123,"source":{"system":"sec-edgar","filing":"0001209191-19-009843","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000120919119009843/doc4.xml","form_type":"4"}},{"id":3660609,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98541,"kind":"person","name":"Parafestas Anastasios","position":1,"cik":"0001556198","reported_name":"Parafestas Anastasios","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":160184,"kind":"organization","name":"Argonaut 22 LLC","position":2,"cik":"0001718998","reported_name":"Argonaut 22 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":3,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2019-02-13T23:09:57.000Z","date":"2019-02-11","kind":"sale","acquired":false,"shares":4433,"price":39.49,"value":175059.17,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F6","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by The RWS 2006 Family Trust."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. 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The Reporting Person expressly disclaims beneficial ownership of the shares held by The RWS 2006 Family Trust and this report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose."}],"balance_after":1608690,"source":{"system":"sec-edgar","filing":"0001209191-19-009843","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000120919119009843/doc4.xml","form_type":"4"}},{"id":3660608,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98541,"kind":"person","name":"Parafestas Anastasios","position":1,"cik":"0001556198","reported_name":"Parafestas Anastasios","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":160184,"kind":"organization","name":"Argonaut 22 LLC","position":2,"cik":"0001718998","reported_name":"Argonaut 22 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":3,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2019-02-13T23:09:57.000Z","date":"2019-02-12","kind":"sale","acquired":false,"shares":25000,"price":40.12,"value":1003000.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by Argonaut 22 LLC."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The reported price in Column 4 is a weighted average price. 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These shares were sold in multiple transactions at prices ranging from $39.05 to $40.04 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. Spinnaker Capital LLC is the Managing Member of Argonaut 22 LLC and the Reporting Person, a director of the Issuer, is the Managing Member of Spinnaker Capital LLC. 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The Reporting Person expressly disclaims beneficial ownership of the shares held by The RWS 2006 Family Trust and this report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose."}],"balance_after":1613123,"source":{"system":"sec-edgar","filing":"0001209191-18-058755","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000120919118058755/doc4.xml","form_type":"4"}},{"id":3763322,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98541,"kind":"person","name":"Parafestas Anastasios","position":1,"cik":"0001556198","reported_name":"Parafestas Anastasios","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":160184,"kind":"organization","name":"Argonaut 22 LLC","position":2,"cik":"0001718998","reported_name":"Argonaut 22 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":3,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-11-15T21:47:20.000Z","date":"2018-11-13","kind":"sale","acquired":false,"shares":2243,"price":42.56,"value":95462.08,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by Argonaut 22 LLC."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $42.50 to $42.69 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. Spinnaker Capital LLC is the Managing Member of Argonaut 22 LLC and the Reporting Person, a director of the Issuer, is the Managing Member of Spinnaker Capital LLC. The Reporting Person and Spinnaker Capital LLC are indirect beneficial owners of the reported securities."}],"balance_after":8317183,"source":{"system":"sec-edgar","filing":"0001209191-18-058755","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000120919118058755/doc4.xml","form_type":"4"}},{"id":3767139,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98541,"kind":"person","name":"Parafestas Anastasios","position":1,"cik":"0001556198","reported_name":"Parafestas Anastasios","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":160184,"kind":"organization","name":"Argonaut 22 LLC","position":2,"cik":"0001718998","reported_name":"Argonaut 22 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":3,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-11-13T21:50:16.000Z","date":"2018-11-09","kind":"sale","acquired":false,"shares":133,"price":42.54,"value":5657.82,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F11","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by The RWS 2006 Family Trust."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"The reported price in Column 4 is a weighted average price. 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The Reporting Person expressly disclaims beneficial ownership of the shares held by The RWS 2006 Family Trust and this report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose."}],"balance_after":1613580,"source":{"system":"sec-edgar","filing":"0001209191-18-058295","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":16,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000120919118058295/doc4.xml","form_type":"4"}},{"id":3767138,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98541,"kind":"person","name":"Parafestas Anastasios","position":1,"cik":"0001556198","reported_name":"Parafestas Anastasios","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":160184,"kind":"organization","name":"Argonaut 22 LLC","position":2,"cik":"0001718998","reported_name":"Argonaut 22 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":3,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-11-13T21:50:16.000Z","date":"2018-11-08","kind":"sale","acquired":false,"shares":335,"price":48.58,"value":16274.3,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F11","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by The RWS 2006 Family Trust."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"The reported price in Column 4 is a weighted average price. 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The Reporting Person expressly disclaims beneficial ownership of the shares held by The RWS 2006 Family Trust and this report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose."}],"balance_after":1613713,"source":{"system":"sec-edgar","filing":"0001209191-18-058295","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":15,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000120919118058295/doc4.xml","form_type":"4"}},{"id":3767137,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98541,"kind":"person","name":"Parafestas Anastasios","position":1,"cik":"0001556198","reported_name":"Parafestas Anastasios","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":160184,"kind":"organization","name":"Argonaut 22 LLC","position":2,"cik":"0001718998","reported_name":"Argonaut 22 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":3,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-11-13T21:50:16.000Z","date":"2018-11-08","kind":"sale","acquired":false,"shares":1318,"price":48.08,"value":63369.44,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F11","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by The RWS 2006 Family Trust."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $47.50 to $48.49 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F12","text":"The shares are owned directly by The RWS 2006 Family Trust. The Reporting Person, a director of the Issuer, is a co-trustee of The RWS 2006 Family Trust and may be deemed to be an indirect beneficial owner of the shares held by The RWS 2006 Family Trust. The Reporting Person expressly disclaims beneficial ownership of the shares held by The RWS 2006 Family Trust and this report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose."}],"balance_after":1614048,"source":{"system":"sec-edgar","filing":"0001209191-18-058295","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":14,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000120919118058295/doc4.xml","form_type":"4"}},{"id":3767136,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98541,"kind":"person","name":"Parafestas Anastasios","position":1,"cik":"0001556198","reported_name":"Parafestas Anastasios","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":160184,"kind":"organization","name":"Argonaut 22 LLC","position":2,"cik":"0001718998","reported_name":"Argonaut 22 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":3,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-11-13T21:50:16.000Z","date":"2018-11-08","kind":"sale","acquired":false,"shares":50,"price":47.2,"value":2360.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F11","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by The RWS 2006 Family Trust."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $46.50 to $47.49 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F12","text":"The shares are owned directly by The RWS 2006 Family Trust. The Reporting Person, a director of the Issuer, is a co-trustee of The RWS 2006 Family Trust and may be deemed to be an indirect beneficial owner of the shares held by The RWS 2006 Family Trust. The Reporting Person expressly disclaims beneficial ownership of the shares held by The RWS 2006 Family Trust and this report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose."}],"balance_after":1615366,"source":{"system":"sec-edgar","filing":"0001209191-18-058295","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000120919118058295/doc4.xml","form_type":"4"}},{"id":3767135,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98541,"kind":"person","name":"Parafestas Anastasios","position":1,"cik":"0001556198","reported_name":"Parafestas Anastasios","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":160184,"kind":"organization","name":"Argonaut 22 LLC","position":2,"cik":"0001718998","reported_name":"Argonaut 22 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":3,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-11-13T21:50:16.000Z","date":"2018-11-08","kind":"sale","acquired":false,"shares":2600,"price":45.9,"value":119340.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F11","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by The RWS 2006 Family Trust."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $45.50 to $46.49 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F12","text":"The shares are owned directly by The RWS 2006 Family Trust. The Reporting Person, a director of the Issuer, is a co-trustee of The RWS 2006 Family Trust and may be deemed to be an indirect beneficial owner of the shares held by The RWS 2006 Family Trust. The Reporting Person expressly disclaims beneficial ownership of the shares held by The RWS 2006 Family Trust and this report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose."}],"balance_after":1615416,"source":{"system":"sec-edgar","filing":"0001209191-18-058295","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000120919118058295/doc4.xml","form_type":"4"}},{"id":3767134,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98541,"kind":"person","name":"Parafestas Anastasios","position":1,"cik":"0001556198","reported_name":"Parafestas Anastasios","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":160184,"kind":"organization","name":"Argonaut 22 LLC","position":2,"cik":"0001718998","reported_name":"Argonaut 22 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":3,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-11-13T21:50:16.000Z","date":"2018-11-08","kind":"sale","acquired":false,"shares":720,"price":44.94,"value":32356.8,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F11","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by The RWS 2006 Family Trust."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The reported price in Column 4 is a weighted average price. 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The Reporting Person expressly disclaims beneficial ownership of the shares held by The RWS 2006 Family Trust and this report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose."}],"balance_after":1618016,"source":{"system":"sec-edgar","filing":"0001209191-18-058295","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000120919118058295/doc4.xml","form_type":"4"}},{"id":3767133,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98541,"kind":"person","name":"Parafestas Anastasios","position":1,"cik":"0001556198","reported_name":"Parafestas Anastasios","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":160184,"kind":"organization","name":"Argonaut 22 LLC","position":2,"cik":"0001718998","reported_name":"Argonaut 22 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":3,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-11-13T21:50:16.000Z","date":"2018-11-08","kind":"sale","acquired":false,"shares":4353,"price":43.91,"value":191140.23,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F11","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by The RWS 2006 Family Trust."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. 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The Reporting Person expressly disclaims beneficial ownership of the shares held by The RWS 2006 Family Trust and this report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose."}],"balance_after":1618736,"source":{"system":"sec-edgar","filing":"0001209191-18-058295","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000120919118058295/doc4.xml","form_type":"4"}},{"id":3767132,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98541,"kind":"person","name":"Parafestas Anastasios","position":1,"cik":"0001556198","reported_name":"Parafestas Anastasios","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":160184,"kind":"organization","name":"Argonaut 22 LLC","position":2,"cik":"0001718998","reported_name":"Argonaut 22 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":3,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-11-13T21:50:16.000Z","date":"2018-11-08","kind":"sale","acquired":false,"shares":10633,"price":42.83,"value":455411.39,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F11","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by The RWS 2006 Family Trust."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $42.50 to $43.49 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F12","text":"The shares are owned directly by The RWS 2006 Family Trust. The Reporting Person, a director of the Issuer, is a co-trustee of The RWS 2006 Family Trust and may be deemed to be an indirect beneficial owner of the shares held by The RWS 2006 Family Trust. The Reporting Person expressly disclaims beneficial ownership of the shares held by The RWS 2006 Family Trust and this report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose."}],"balance_after":1623089,"source":{"system":"sec-edgar","filing":"0001209191-18-058295","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000120919118058295/doc4.xml","form_type":"4"}},{"id":3767131,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98541,"kind":"person","name":"Parafestas Anastasios","position":1,"cik":"0001556198","reported_name":"Parafestas Anastasios","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":160184,"kind":"organization","name":"Argonaut 22 LLC","position":2,"cik":"0001718998","reported_name":"Argonaut 22 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":3,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-11-13T21:50:16.000Z","date":"2018-11-09","kind":"sale","acquired":false,"shares":667,"price":42.54,"value":28374.18,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by Argonaut 22 LLC."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $42.51 to $42.55 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. Spinnaker Capital LLC is the Managing Member of Argonaut 22 LLC and the Reporting Person, a director of the Issuer, is the Managing Member of Spinnaker Capital LLC. 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The Reporting Person expressly disclaims beneficial ownership of the shares held by The RWS 2006 Family Trust and this report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose."}],"balance_after":1633722,"source":{"system":"sec-edgar","filing":"0001209191-18-057678","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000120919118057678/doc4.xml","form_type":"4"}},{"id":3771592,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98541,"kind":"person","name":"Parafestas Anastasios","position":1,"cik":"0001556198","reported_name":"Parafestas Anastasios","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":160184,"kind":"organization","name":"Argonaut 22 LLC","position":2,"cik":"0001718998","reported_name":"Argonaut 22 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":3,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-11-07T22:54:07.000Z","date":"2018-11-05","kind":"sale","acquired":false,"shares":9070,"price":42.66,"value":386926.2,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F5","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by The RWS 2006 Family Trust."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. 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These shares were sold in multiple transactions at prices ranging from $42.04 to $43.03 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":8483961,"source":{"system":"sec-edgar","filing":"0001127602-18-030721","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218030721/form4.xml","form_type":"4"}},{"id":3789092,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-10-17T20:27:42.000Z","date":"2018-10-16","kind":"sale","acquired":false,"shares":50000,"price":42.5,"value":2125000.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $41.39 to $43.11 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":8491646,"source":{"system":"sec-edgar","filing":"0001127602-18-030513","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218030513/form4.xml","form_type":"4"}},{"id":3789091,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-10-17T20:27:42.000Z","date":"2018-10-15","kind":"sale","acquired":false,"shares":50000,"price":41.72,"value":2086000.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $41.12 to $42.26 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":8541646,"source":{"system":"sec-edgar","filing":"0001127602-18-030513","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218030513/form4.xml","form_type":"4"}},{"id":3790693,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-10-15T20:21:46.000Z","date":"2018-10-12","kind":"sale","acquired":false,"shares":50000,"price":42.39,"value":2119500.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $41.74 to $42.99 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":8591646,"source":{"system":"sec-edgar","filing":"0001127602-18-030181","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218030181/form4.xml","form_type":"4"}},{"id":3790692,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-10-15T20:21:46.000Z","date":"2018-10-11","kind":"sale","acquired":false,"shares":50000,"price":42.42,"value":2121000.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $41.72 to $43.22 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":8641646,"source":{"system":"sec-edgar","filing":"0001127602-18-030181","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218030181/form4.xml","form_type":"4"}},{"id":3792508,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-10-11T20:14:40.000Z","date":"2018-10-10","kind":"sale","acquired":false,"shares":50000,"price":43.59,"value":2179500.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $42.83 to $45.35 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":8691646,"source":{"system":"sec-edgar","filing":"0001127602-18-030031","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218030031/form4.xml","form_type":"4"}},{"id":3792507,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-10-11T20:14:40.000Z","date":"2018-10-09","kind":"sale","acquired":false,"shares":50000,"price":46.03,"value":2301500.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $45.23 to $48.01 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":8741646,"source":{"system":"sec-edgar","filing":"0001127602-18-030031","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218030031/form4.xml","form_type":"4"}},{"id":3794547,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-10-09T20:21:25.000Z","date":"2018-10-08","kind":"sale","acquired":false,"shares":50000,"price":47.42,"value":2371000.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $46.54 to $48.88 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":8791646,"source":{"system":"sec-edgar","filing":"0001127602-18-029817","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218029817/form4.xml","form_type":"4"}},{"id":3794546,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-10-09T20:21:25.000Z","date":"2018-10-05","kind":"sale","acquired":false,"shares":50000,"price":49.91,"value":2495500.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $48.62 to $51.66 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":8841646,"source":{"system":"sec-edgar","filing":"0001127602-18-029817","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218029817/form4.xml","form_type":"4"}},{"id":3796099,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-10-05T20:31:46.000Z","date":"2018-10-04","kind":"sale","acquired":false,"shares":50000,"price":51.33,"value":2566500.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $50.78 to $51.96 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":8891646,"source":{"system":"sec-edgar","filing":"0001127602-18-029643","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218029643/form4.xml","form_type":"4"}},{"id":3796098,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-10-05T20:31:46.000Z","date":"2018-10-03","kind":"sale","acquired":false,"shares":50000,"price":51.45,"value":2572500.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.98 to $52.58 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":8941646,"source":{"system":"sec-edgar","filing":"0001127602-18-029643","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218029643/form4.xml","form_type":"4"}},{"id":3798932,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-10-03T21:51:13.000Z","date":"2018-10-02","kind":"sale","acquired":false,"shares":50000,"price":52.05,"value":2602500.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $50.05 to $54.55 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":8991646,"source":{"system":"sec-edgar","filing":"0001127602-18-029456","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218029456/form4.xml","form_type":"4"}},{"id":3798931,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-10-03T21:51:13.000Z","date":"2018-10-01","kind":"sale","acquired":false,"shares":50000,"price":54.29,"value":2714500.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $52.51 to $56.36 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":9041646,"source":{"system":"sec-edgar","filing":"0001127602-18-029456","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218029456/form4.xml","form_type":"4"}},{"id":3804426,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-10-01T20:16:44.000Z","date":"2018-09-28","kind":"sale","acquired":false,"shares":50000,"price":55.34,"value":2767000.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $54.99 to $55.91 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":9091646,"source":{"system":"sec-edgar","filing":"0001127602-18-028758","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218028758/form4.xml","form_type":"4"}},{"id":3804425,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-10-01T20:16:44.000Z","date":"2018-09-27","kind":"sale","acquired":false,"shares":50000,"price":55.72,"value":2786000.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $54.90 to $56.25 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":9141646,"source":{"system":"sec-edgar","filing":"0001127602-18-028758","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218028758/form4.xml","form_type":"4"}},{"id":3806635,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-09-27T20:29:35.000Z","date":"2018-09-26","kind":"sale","acquired":false,"shares":50000,"price":55.59,"value":2779500.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $54.33 to $56.89 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":9191646,"source":{"system":"sec-edgar","filing":"0001127602-18-028458","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218028458/form4.xml","form_type":"4"}},{"id":3806634,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-09-27T20:29:35.000Z","date":"2018-09-25","kind":"sale","acquired":false,"shares":50000,"price":53.97,"value":2698500.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $52.82 to $55.76 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":9241646,"source":{"system":"sec-edgar","filing":"0001127602-18-028458","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218028458/form4.xml","form_type":"4"}},{"id":3808349,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-09-25T20:21:11.000Z","date":"2018-09-24","kind":"sale","acquired":false,"shares":50000,"price":52.47,"value":2623500.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $50.98 to $55.11 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":9291646,"source":{"system":"sec-edgar","filing":"0001127602-18-028313","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218028313/form4.xml","form_type":"4"}},{"id":3808348,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-09-25T20:21:11.000Z","date":"2018-09-21","kind":"sale","acquired":false,"shares":50000,"price":51.56,"value":2578000.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $51.06 to $52.10 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":9341646,"source":{"system":"sec-edgar","filing":"0001127602-18-028313","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218028313/form4.xml","form_type":"4"}},{"id":3809887,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-09-21T20:18:59.000Z","date":"2018-09-20","kind":"sale","acquired":false,"shares":50000,"price":51.89,"value":2594500.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $51.38 to $52.34 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":9391646,"source":{"system":"sec-edgar","filing":"0001127602-18-028229","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218028229/form4.xml","form_type":"4"}},{"id":3809886,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-09-21T20:18:59.000Z","date":"2018-09-19","kind":"sale","acquired":false,"shares":50000,"price":51.53,"value":2576500.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $50.95 to $52.54 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":9441646,"source":{"system":"sec-edgar","filing":"0001127602-18-028229","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218028229/form4.xml","form_type":"4"}},{"id":3811734,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-09-19T23:24:43.000Z","date":"2018-09-18","kind":"sale","acquired":false,"shares":50000,"price":52.5,"value":2625000.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $51.68 to $52.88 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":9491646,"source":{"system":"sec-edgar","filing":"0001127602-18-028092","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218028092/form4.xml","form_type":"4"}},{"id":3811733,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-09-19T23:24:43.000Z","date":"2018-09-17","kind":"sale","acquired":false,"shares":50000,"price":51.71,"value":2585500.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $50.76 to $52.66 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":9541646,"source":{"system":"sec-edgar","filing":"0001127602-18-028092","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218028092/form4.xml","form_type":"4"}},{"id":3814422,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-09-17T20:33:16.000Z","date":"2018-09-14","kind":"sale","acquired":false,"shares":50000,"price":52.56,"value":2628000.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $51.52 to $53.31 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":9591646,"source":{"system":"sec-edgar","filing":"0001127602-18-027777","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218027777/form4.xml","form_type":"4"}},{"id":3814421,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-09-17T20:33:16.000Z","date":"2018-09-13","kind":"sale","acquired":false,"shares":50000,"price":51.74,"value":2587000.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $50.64 to $52.81 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":9641646,"source":{"system":"sec-edgar","filing":"0001127602-18-027777","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218027777/form4.xml","form_type":"4"}},{"id":3817109,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-09-13T20:15:38.000Z","date":"2018-09-12","kind":"sale","acquired":false,"shares":50000,"price":50.94,"value":2547000.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.99 to $51.70 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":9691646,"source":{"system":"sec-edgar","filing":"0001127602-18-027505","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218027505/form4.xml","form_type":"4"}},{"id":3817108,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-09-13T20:15:38.000Z","date":"2018-09-11","kind":"sale","acquired":false,"shares":50000,"price":51.01,"value":2550500.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.57 to $52.15 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":9741646,"source":{"system":"sec-edgar","filing":"0001127602-18-027505","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218027505/form4.xml","form_type":"4"}},{"id":3819700,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-09-11T20:51:34.000Z","date":"2018-09-10","kind":"sale","acquired":false,"shares":50000,"price":49.15,"value":2457500.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $47.04 to $50.36 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":9791646,"source":{"system":"sec-edgar","filing":"0001127602-18-027360","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218027360/form4.xml","form_type":"4"}},{"id":3819699,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-09-11T20:51:34.000Z","date":"2018-09-07","kind":"sale","acquired":false,"shares":50000,"price":47.93,"value":2396500.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $47.47 to $48.89 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":9841646,"source":{"system":"sec-edgar","filing":"0001127602-18-027360","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218027360/form4.xml","form_type":"4"}},{"id":3822093,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-09-07T20:18:34.000Z","date":"2018-09-06","kind":"sale","acquired":false,"shares":50000,"price":47.63,"value":2381500.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $46.64 to $48.38 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":9891646,"source":{"system":"sec-edgar","filing":"0001127602-18-027107","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218027107/form4.xml","form_type":"4"}},{"id":3822092,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-09-07T20:18:34.000Z","date":"2018-09-05","kind":"sale","acquired":false,"shares":50000,"price":47.88,"value":2394000.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $47.00 to $49.36 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":9941646,"source":{"system":"sec-edgar","filing":"0001127602-18-027107","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218027107/form4.xml","form_type":"4"}},{"id":3825577,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-09-05T20:34:06.000Z","date":"2018-09-04","kind":"sale","acquired":false,"shares":50000,"price":48.94,"value":2447000.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $48.25 to $49.60 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":9991646,"source":{"system":"sec-edgar","filing":"0001127602-18-026804","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218026804/form4.xml","form_type":"4"}},{"id":3825576,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-09-05T20:34:06.000Z","date":"2018-08-31","kind":"sale","acquired":false,"shares":50000,"price":49.07,"value":2453500.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $48.16 to $49.72 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":10041646,"source":{"system":"sec-edgar","filing":"0001127602-18-026804","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218026804/form4.xml","form_type":"4"}},{"id":3829632,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-08-30T22:04:15.000Z","date":"2018-08-30","kind":"sale","acquired":false,"shares":50000,"price":49.81,"value":2490500.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.32 to $50.77 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":10091646,"source":{"system":"sec-edgar","filing":"0001127602-18-026519","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218026519/form4.xml","form_type":"4"}},{"id":3829631,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-08-30T22:04:15.000Z","date":"2018-08-29","kind":"sale","acquired":false,"shares":35367,"price":49.44,"value":1748544.48,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $48.99 to $50.04 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":10141646,"source":{"system":"sec-edgar","filing":"0001127602-18-026519","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218026519/form4.xml","form_type":"4"}},{"id":3830664,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-08-29T20:22:17.000Z","date":"2018-08-28","kind":"sale","acquired":false,"shares":50000,"price":49.83,"value":2491500.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.55 to $50.29 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":10177013,"source":{"system":"sec-edgar","filing":"0001127602-18-026462","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218026462/form4.xml","form_type":"4"}},{"id":3830663,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-08-29T20:22:17.000Z","date":"2018-08-27","kind":"sale","acquired":false,"shares":50000,"price":49.94,"value":2497000.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.53 to $50.26 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":10227013,"source":{"system":"sec-edgar","filing":"0001127602-18-026462","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218026462/form4.xml","form_type":"4"}},{"id":3832910,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-08-27T20:24:11.000Z","date":"2018-08-24","kind":"sale","acquired":false,"shares":50000,"price":49.6,"value":2480000.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.08 to $50.00 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":10277013,"source":{"system":"sec-edgar","filing":"0001127602-18-026286","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218026286/form4.xml","form_type":"4"}},{"id":3832909,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-08-27T20:24:11.000Z","date":"2018-08-23","kind":"sale","acquired":false,"shares":50000,"price":49.34,"value":2467000.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $48.70 to $49.89 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":10327013,"source":{"system":"sec-edgar","filing":"0001127602-18-026286","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218026286/form4.xml","form_type":"4"}},{"id":3834865,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-08-23T21:36:56.000Z","date":"2018-08-22","kind":"sale","acquired":false,"shares":50000,"price":49.6,"value":2480000.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.08 to $50.14 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":10377013,"source":{"system":"sec-edgar","filing":"0001127602-18-026127","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218026127/form4.xml","form_type":"4"}},{"id":3834864,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-08-23T21:36:56.000Z","date":"2018-08-21","kind":"sale","acquired":false,"shares":50000,"price":49.6,"value":2480000.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.00 to $50.24 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":10427013,"source":{"system":"sec-edgar","filing":"0001127602-18-026127","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218026127/form4.xml","form_type":"4"}},{"id":3838461,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-08-20T20:14:21.000Z","date":"2018-08-17","kind":"sale","acquired":false,"shares":13695,"price":50,"value":684750.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $50.00 to $50.11 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":10477013,"source":{"system":"sec-edgar","filing":"0001127602-18-025792","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218025792/form4.xml","form_type":"4"}},{"id":3840322,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-08-17T20:56:16.000Z","date":"2018-08-16","kind":"sale","acquired":false,"shares":26314,"price":50.29,"value":1323331.06,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $50.00 to $51.62 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":10490708,"source":{"system":"sec-edgar","filing":"0001127602-18-025698","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218025698/form4.xml","form_type":"4"}},{"id":3840321,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-08-17T20:56:16.000Z","date":"2018-08-15","kind":"sale","acquired":false,"shares":1500,"price":51.05,"value":76575.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $51.00 to $51.25 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":10517022,"source":{"system":"sec-edgar","filing":"0001127602-18-025698","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218025698/form4.xml","form_type":"4"}},{"id":3843480,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-08-15T20:17:36.000Z","date":"2018-08-14","kind":"sale","acquired":false,"shares":23209,"price":51.12,"value":1186444.08,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $51.00 to $51.64 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. The Reporting Person and Anastasios Parafestas are indirect beneficial owners of the reported securities."}],"balance_after":10518522,"source":{"system":"sec-edgar","filing":"0001127602-18-025469","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000112760218025469/form4.xml","form_type":"4"}},{"id":3843479,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":1,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Stock","published_at":"2018-08-15T20:17:36.000Z","date":"2018-08-13","kind":"sale","acquired":false,"shares":31741,"price":51.4,"value":1631487.4,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $51.07 to $52.05 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"The shares are owned directly by Argonaut 22 LLC. The Reporting Person is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of the Reporting Person. 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These shares were sold in multiple transactions at prices ranging from $33.00 to $33.90 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"Argonaut 22 LLC is the direct beneficial owner of the shares. Spinnaker Capital LLC is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of Spinnaker Capital LLC. 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These shares were sold in multiple transactions at prices ranging from $31.00 to $32.04 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F3","text":"Argonaut 22 LLC is the direct beneficial owner of the shares. Spinnaker Capital LLC is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of Spinnaker Capital LLC. 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These shares were sold in multiple transactions at prices ranging from $30.72 to $32.46 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F3","text":"Argonaut 22 LLC is the direct beneficial owner of the shares. Spinnaker Capital LLC is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of Spinnaker Capital LLC. 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These shares were sold in multiple transactions at prices ranging from $30.39 to $31.91 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F3","text":"Argonaut 22 LLC is the direct beneficial owner of the shares. Spinnaker Capital LLC is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of Spinnaker Capital LLC. Anastasios Parafestas and Spinnaker Capital LLC are indirect beneficial owners of the reported securities."}],"balance_after":13153222,"source":{"system":"sec-edgar","filing":"0000899243-18-013821","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000089924318013821/doc4.xml","form_type":"4"}},{"id":3920731,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":160184,"kind":"organization","name":"Argonaut 22 LLC","position":1,"cik":"0001718998","reported_name":"Argonaut 22 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":2,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-05-23T20:30:28.000Z","date":"2018-05-21","kind":"sale","acquired":false,"shares":176605,"price":31.84,"value":5623103.2,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.69 to $32.32 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F3","text":"Argonaut 22 LLC is the direct beneficial owner of the shares. Spinnaker Capital LLC is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of Spinnaker Capital LLC. Anastasios Parafestas and Spinnaker Capital LLC are indirect beneficial owners of the reported securities."}],"balance_after":13267235,"source":{"system":"sec-edgar","filing":"0000899243-18-013821","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000089924318013821/doc4.xml","form_type":"4"}},{"id":3924162,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":160184,"kind":"organization","name":"Argonaut 22 LLC","position":1,"cik":"0001718998","reported_name":"Argonaut 22 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":2,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-05-21T20:31:42.000Z","date":"2018-05-18","kind":"sale","acquired":false,"shares":79873,"price":32.12,"value":2565520.76,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.77 to $33.09 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F3","text":"Argonaut 22 LLC is the direct beneficial owner of the shares. Spinnaker Capital LLC is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of Spinnaker Capital LLC. Anastasios Parafestas and Spinnaker Capital LLC are indirect beneficial owners of the reported securities."}],"balance_after":13443840,"source":{"system":"sec-edgar","filing":"0000899243-18-013566","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000089924318013566/doc4.xml","form_type":"4"}},{"id":3924161,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":160184,"kind":"organization","name":"Argonaut 22 LLC","position":1,"cik":"0001718998","reported_name":"Argonaut 22 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":2,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-05-21T20:31:42.000Z","date":"2018-05-17","kind":"sale","acquired":false,"shares":54625,"price":32.26,"value":1762202.5,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.64 to $32.74 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F3","text":"Argonaut 22 LLC is the direct beneficial owner of the shares. Spinnaker Capital LLC is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of Spinnaker Capital LLC. Anastasios Parafestas and Spinnaker Capital LLC are indirect beneficial owners of the reported securities."}],"balance_after":13523713,"source":{"system":"sec-edgar","filing":"0000899243-18-013566","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000089924318013566/doc4.xml","form_type":"4"}},{"id":3928456,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":160184,"kind":"organization","name":"Argonaut 22 LLC","position":1,"cik":"0001718998","reported_name":"Argonaut 22 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":2,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-05-17T20:32:18.000Z","date":"2018-05-16","kind":"sale","acquired":false,"shares":50325,"price":32.19,"value":1619961.75,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.28 to $32.73 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F3","text":"Argonaut 22 LLC is the direct beneficial owner of the shares. Spinnaker Capital LLC is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of Spinnaker Capital LLC. Anastasios Parafestas and Spinnaker Capital LLC are indirect beneficial owners of the reported securities."}],"balance_after":13578338,"source":{"system":"sec-edgar","filing":"0000899243-18-013219","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000089924318013219/doc4.xml","form_type":"4"}},{"id":3928455,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":160184,"kind":"organization","name":"Argonaut 22 LLC","position":1,"cik":"0001718998","reported_name":"Argonaut 22 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":2,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-05-17T20:32:18.000Z","date":"2018-05-15","kind":"sale","acquired":false,"shares":39801,"price":31.71,"value":1262089.71,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.33 to $32.00 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F3","text":"Argonaut 22 LLC is the direct beneficial owner of the shares. Spinnaker Capital LLC is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of Spinnaker Capital LLC. Anastasios Parafestas and Spinnaker Capital LLC are indirect beneficial owners of the reported securities."}],"balance_after":13628663,"source":{"system":"sec-edgar","filing":"0000899243-18-013219","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000089924318013219/doc4.xml","form_type":"4"}},{"id":3933133,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":160184,"kind":"organization","name":"Argonaut 22 LLC","position":1,"cik":"0001718998","reported_name":"Argonaut 22 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":2,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-05-15T20:32:12.000Z","date":"2018-05-14","kind":"sale","acquired":false,"shares":25908,"price":32.11,"value":831905.88,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.90 to $32.63 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F3","text":"Argonaut 22 LLC is the direct beneficial owner of the shares. Spinnaker Capital LLC is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of Spinnaker Capital LLC. Anastasios Parafestas and Spinnaker Capital LLC are indirect beneficial owners of the reported securities."}],"balance_after":13668464,"source":{"system":"sec-edgar","filing":"0000899243-18-012886","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000089924318012886/doc4.xml","form_type":"4"}},{"id":3933132,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":160184,"kind":"organization","name":"Argonaut 22 LLC","position":1,"cik":"0001718998","reported_name":"Argonaut 22 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":2,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-05-15T20:32:12.000Z","date":"2018-05-11","kind":"sale","acquired":false,"shares":13847,"price":32.65,"value":452104.55,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $32.30 to $33.15 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F3","text":"Argonaut 22 LLC is the direct beneficial owner of the shares. Spinnaker Capital LLC is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of Spinnaker Capital LLC. Anastasios Parafestas and Spinnaker Capital LLC are indirect beneficial owners of the reported securities."}],"balance_after":13694372,"source":{"system":"sec-edgar","filing":"0000899243-18-012886","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000089924318012886/doc4.xml","form_type":"4"}},{"id":4184070,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":160184,"kind":"organization","name":"Argonaut 22 LLC","position":1,"cik":"0001718998","reported_name":"Argonaut 22 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":2,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series C Convertible Preferred Stock","published_at":"2017-10-18T20:48:19.000Z","date":"2017-10-16","kind":"exercise","acquired":false,"shares":953152,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of the Issuer's Series A Convertible Preferred Stock converted into 6.0000023 shares of the Issuer's Class A Common Stock upon the closing of the Issuer's sale of its Class A Common Stock in its firm commitment underwritten initial public offering pursuant to a registration statement on Form S-1 (File No. 333-220495) under the Securities Act of 1933, as amended (the \"IPO\"), and had no expiration date. Each share of the Issuer's Series B Convertible Preferred Stock converted into 6.0000015 shares of the Issuer's Class A Common Stock upon closing of the IPO and had no expiration date.  Each share of the Issuer's Series C Convertible Preferred Stock converted into 6 shares of the Issuer's Class A Common Stock upon closing of the IPO and had no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Each share of the Issuer's Series A Convertible Preferred Stock converted into 6.0000023 shares of the Issuer's Class A Common Stock upon the closing of the Issuer's sale of its Class A Common Stock in its firm commitment underwritten initial public offering pursuant to a registration statement on Form S-1 (File No. 333-220495) under the Securities Act of 1933, as amended (the \"IPO\"), and had no expiration date. Each share of the Issuer's Series B Convertible Preferred Stock converted into 6.0000015 shares of the Issuer's Class A Common Stock upon closing of the IPO and had no expiration date.  Each share of the Issuer's Series C Convertible Preferred Stock converted into 6 shares of the Issuer's Class A Common Stock upon closing of the IPO and had no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each share of the Issuer's Series A Convertible Preferred Stock converted into 6.0000023 shares of the Issuer's Class A Common Stock upon the closing of the Issuer's sale of its Class A Common Stock in its firm commitment underwritten initial public offering pursuant to a registration statement on Form S-1 (File No. 333-220495) under the Securities Act of 1933, as amended (the \"IPO\"), and had no expiration date. Each share of the Issuer's Series B Convertible Preferred Stock converted into 6.0000015 shares of the Issuer's Class A Common Stock upon closing of the IPO and had no expiration date.  Each share of the Issuer's Series C Convertible Preferred Stock converted into 6 shares of the Issuer's Class A Common Stock upon closing of the IPO and had no expiration date."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"Argonaut 22 LLC is the direct beneficial owner of the shares. Spinnaker Capital LLC is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of Spinnaker Capital LLC. Anastasios Parafestas and Spinnaker Capital are indirect beneficial owners of the reported securities."}],"balance_after":0,"derivative":{"underlying":"Class A Common Stock","underlying_shares":5718912},"source":{"system":"sec-edgar","filing":"0001104659-17-062774","document":"a4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000110465917062774/a4.xml","form_type":"4"}},{"id":4184069,"issuer":{"id":4203,"kind":"organization","name":"CarGurus, Inc.","symbol":"CARG"},"owners":[{"id":160184,"kind":"organization","name":"Argonaut 22 LLC","position":1,"cik":"0001718998","reported_name":"Argonaut 22 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":98628,"kind":"organization","name":"Spinnaker Capital LLC","position":2,"cik":"0001719281","reported_name":"Spinnaker Capital LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series B Convertible Preferred Stock","published_at":"2017-10-18T20:48:19.000Z","date":"2017-10-16","kind":"exercise","acquired":false,"shares":791643,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of the Issuer's Series A Convertible Preferred Stock converted into 6.0000023 shares of the Issuer's Class A Common Stock upon the closing of the Issuer's sale of its Class A Common Stock in its firm commitment underwritten initial public offering pursuant to a registration statement on Form S-1 (File No. 333-220495) under the Securities Act of 1933, as amended (the \"IPO\"), and had no expiration date. Each share of the Issuer's Series B Convertible Preferred Stock converted into 6.0000015 shares of the Issuer's Class A Common Stock upon closing of the IPO and had no expiration date.  Each share of the Issuer's Series C Convertible Preferred Stock converted into 6 shares of the Issuer's Class A Common Stock upon closing of the IPO and had no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Each share of the Issuer's Series A Convertible Preferred Stock converted into 6.0000023 shares of the Issuer's Class A Common Stock upon the closing of the Issuer's sale of its Class A Common Stock in its firm commitment underwritten initial public offering pursuant to a registration statement on Form S-1 (File No. 333-220495) under the Securities Act of 1933, as amended (the \"IPO\"), and had no expiration date. Each share of the Issuer's Series B Convertible Preferred Stock converted into 6.0000015 shares of the Issuer's Class A Common Stock upon closing of the IPO and had no expiration date.  Each share of the Issuer's Series C Convertible Preferred Stock converted into 6 shares of the Issuer's Class A Common Stock upon closing of the IPO and had no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each share of the Issuer's Series A Convertible Preferred Stock converted into 6.0000023 shares of the Issuer's Class A Common Stock upon the closing of the Issuer's sale of its Class A Common Stock in its firm commitment underwritten initial public offering pursuant to a registration statement on Form S-1 (File No. 333-220495) under the Securities Act of 1933, as amended (the \"IPO\"), and had no expiration date. Each share of the Issuer's Series B Convertible Preferred Stock converted into 6.0000015 shares of the Issuer's Class A Common Stock upon closing of the IPO and had no expiration date.  Each share of the Issuer's Series C Convertible Preferred Stock converted into 6 shares of the Issuer's Class A Common Stock upon closing of the IPO and had no expiration date."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"Argonaut 22 LLC is the direct beneficial owner of the shares. Spinnaker Capital LLC is the Managing Member of Argonaut 22 LLC and Anastasios Parafestas, a director of the Issuer, is the Managing Member of Spinnaker Capital LLC. Anastasios Parafestas and Spinnaker Capital are indirect beneficial owners of the reported securities."}],"balance_after":0,"derivative":{"underlying":"Class A Common Stock","underlying_shares":4749859},"source":{"system":"sec-edgar","filing":"0001104659-17-062774","document":"a4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1719281/000110465917062774/a4.xml","form_type":"4"}}],"next_cursor":"2017-10-18T20:48:19.000000Z,4184069"}