{"transactions":[{"id":3384480,"issuer":{"id":4261,"kind":"organization","name":"TransMedics Group, Inc.","symbol":"TMDX"},"owners":[{"id":97142,"kind":"organization","name":"Flagship Ventures Fund IV General Partner LLC","position":1,"cik":"0001508051","reported_name":"Flagship Ventures Fund IV General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":111426,"kind":"organization","name":"Flagship Ventures Fund IV, L.P.","position":2,"cik":"0001503559","reported_name":"Flagship Ventures Fund IV, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":107299,"kind":"organization","name":"Flagship Ventures 2007 General Partner LLC","position":3,"cik":"0001508053","reported_name":"Flagship Ventures 2007 General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154134,"kind":"organization","name":"Flagship Ventures Fund 2007, L.P.","position":4,"cik":"0001508052","reported_name":"Flagship Ventures Fund 2007, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":5,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2019-10-31T23:00:29.000Z","date":"2019-10-29","kind":"other","acquired":false,"shares":248379,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"On October 29, 2019, Flagship Ventures Fund 2007, L.P. (\"Flagship Fund 2007\") distributed to its limited partners and sole general partner, Flagship Ventures 2007 General Partner LLC (\"Flagship Fund 2007 GP\"), pro rata and without consideration, 1,061,102 shares of the Issuer's common stock. Flagship Fund 2007 GP, in turn, distributed to its members, pro rata and without consideration, the 248,379 shares it received from Flagship Fund 2007. Dr. Afeyan, a manager of Flagship Fund 2007 GP, received 92,796 shares through Flagship Fund 2007 GP's distribution.  The aforementioned distributions were made in accordance with the exemptions afforded by Rule 16a-13 and Rule 16a-9 of the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"On October 29, 2019, Flagship Ventures Fund 2007, L.P. (\"Flagship Fund 2007\") distributed to its limited partners and sole general partner, Flagship Ventures 2007 General Partner LLC (\"Flagship Fund 2007 GP\"), pro rata and without consideration, 1,061,102 shares of the Issuer's common stock. Flagship Fund 2007 GP, in turn, distributed to its members, pro rata and without consideration, the 248,379 shares it received from Flagship Fund 2007. Dr. Afeyan, a manager of Flagship Fund 2007 GP, received 92,796 shares through Flagship Fund 2007 GP's distribution.  The aforementioned distributions were made in accordance with the exemptions afforded by Rule 16a-13 and Rule 16a-9 of the Securities Exchange Act of 1934, as amended."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"On October 29, 2019, Flagship Ventures Fund 2007, L.P. (\"Flagship Fund 2007\") distributed to its limited partners and sole general partner, Flagship Ventures 2007 General Partner LLC (\"Flagship Fund 2007 GP\"), pro rata and without consideration, 1,061,102 shares of the Issuer's common stock. Flagship Fund 2007 GP, in turn, distributed to its members, pro rata and without consideration, the 248,379 shares it received from Flagship Fund 2007. Dr. Afeyan, a manager of Flagship Fund 2007 GP, received 92,796 shares through Flagship Fund 2007 GP's distribution.  The aforementioned distributions were made in accordance with the exemptions afforded by Rule 16a-13 and Rule 16a-9 of the Securities Exchange Act of 1934, as amended."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Held by Flagship Fund 2007 GP. Each of the reporting persons disclaims beneficial ownership of the shares except to the extent, if any, of his or its pecuniary interest therein."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000899243-19-026439","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1222012/000089924319026439/doc4.xml","form_type":"4"}},{"id":3384479,"issuer":{"id":4261,"kind":"organization","name":"TransMedics Group, Inc.","symbol":"TMDX"},"owners":[{"id":97142,"kind":"organization","name":"Flagship Ventures Fund IV General Partner LLC","position":1,"cik":"0001508051","reported_name":"Flagship Ventures Fund IV General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":111426,"kind":"organization","name":"Flagship Ventures Fund IV, L.P.","position":2,"cik":"0001503559","reported_name":"Flagship Ventures Fund IV, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":107299,"kind":"organization","name":"Flagship Ventures 2007 General Partner LLC","position":3,"cik":"0001508053","reported_name":"Flagship Ventures 2007 General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154134,"kind":"organization","name":"Flagship Ventures Fund 2007, L.P.","position":4,"cik":"0001508052","reported_name":"Flagship Ventures Fund 2007, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":5,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2019-10-31T23:00:29.000Z","date":"2019-10-29","kind":"other","acquired":false,"shares":61537,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On October 29, 2019, Flagship Ventures Fund IV, L.P. (\"Flagship Fund IV\") distributed to its limited partners and sole general partner, Flagship Ventures Fund IV General Partner LLC (\"Flagship Fund IV GP\"), pro rata and without consideration, 1,469,173 shares of the Issuer's common stock. Flagship Fund IV GP, in turn, distributed to its members, pro rata and without consideration, the 61,537 shares it received from Flagship Fund IV. Noubar B. Afeyan, Ph.D., a manager of Flagship Fund IV GP, received 27,799 shares through Flagship Fund IV GP's distribution.  The aforementioned distributions were made in accordance with the exemptions afforded by Rule 16a-13 and Rule 16a-9 of the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On October 29, 2019, Flagship Ventures Fund IV, L.P. (\"Flagship Fund IV\") distributed to its limited partners and sole general partner, Flagship Ventures Fund IV General Partner LLC (\"Flagship Fund IV GP\"), pro rata and without consideration, 1,469,173 shares of the Issuer's common stock. Flagship Fund IV GP, in turn, distributed to its members, pro rata and without consideration, the 61,537 shares it received from Flagship Fund IV. Noubar B. Afeyan, Ph.D., a manager of Flagship Fund IV GP, received 27,799 shares through Flagship Fund IV GP's distribution.  The aforementioned distributions were made in accordance with the exemptions afforded by Rule 16a-13 and Rule 16a-9 of the Securities Exchange Act of 1934, as amended."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On October 29, 2019, Flagship Ventures Fund IV, L.P. (\"Flagship Fund IV\") distributed to its limited partners and sole general partner, Flagship Ventures Fund IV General Partner LLC (\"Flagship Fund IV GP\"), pro rata and without consideration, 1,469,173 shares of the Issuer's common stock. Flagship Fund IV GP, in turn, distributed to its members, pro rata and without consideration, the 61,537 shares it received from Flagship Fund IV. Noubar B. Afeyan, Ph.D., a manager of Flagship Fund IV GP, received 27,799 shares through Flagship Fund IV GP's distribution.  The aforementioned distributions were made in accordance with the exemptions afforded by Rule 16a-13 and Rule 16a-9 of the Securities Exchange Act of 1934, as amended."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Held by Flagship Fund IV GP. Each of the filing persons other than Flagship Fund IV GP disclaims beneficial ownership of the shares except to the extent, if any, of his or its pecuniary interest therein."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000899243-19-026439","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1222012/000089924319026439/doc4.xml","form_type":"4"}},{"id":3384478,"issuer":{"id":4261,"kind":"organization","name":"TransMedics Group, Inc.","symbol":"TMDX"},"owners":[{"id":97142,"kind":"organization","name":"Flagship Ventures Fund IV General Partner LLC","position":1,"cik":"0001508051","reported_name":"Flagship Ventures Fund IV General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":111426,"kind":"organization","name":"Flagship Ventures Fund IV, L.P.","position":2,"cik":"0001503559","reported_name":"Flagship Ventures Fund IV, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":107299,"kind":"organization","name":"Flagship Ventures 2007 General Partner LLC","position":3,"cik":"0001508053","reported_name":"Flagship Ventures 2007 General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154134,"kind":"organization","name":"Flagship Ventures Fund 2007, L.P.","position":4,"cik":"0001508052","reported_name":"Flagship Ventures Fund 2007, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":5,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2019-10-31T23:00:29.000Z","date":"2019-10-29","kind":"other","acquired":false,"shares":1061102,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"On October 29, 2019, Flagship Ventures Fund 2007, L.P. (\"Flagship Fund 2007\") distributed to its limited partners and sole general partner, Flagship Ventures 2007 General Partner LLC (\"Flagship Fund 2007 GP\"), pro rata and without consideration, 1,061,102 shares of the Issuer's common stock. Flagship Fund 2007 GP, in turn, distributed to its members, pro rata and without consideration, the 248,379 shares it received from Flagship Fund 2007. Dr. Afeyan, a manager of Flagship Fund 2007 GP, received 92,796 shares through Flagship Fund 2007 GP's distribution.  The aforementioned distributions were made in accordance with the exemptions afforded by Rule 16a-13 and Rule 16a-9 of the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"On October 29, 2019, Flagship Ventures Fund 2007, L.P. (\"Flagship Fund 2007\") distributed to its limited partners and sole general partner, Flagship Ventures 2007 General Partner LLC (\"Flagship Fund 2007 GP\"), pro rata and without consideration, 1,061,102 shares of the Issuer's common stock. Flagship Fund 2007 GP, in turn, distributed to its members, pro rata and without consideration, the 248,379 shares it received from Flagship Fund 2007. Dr. Afeyan, a manager of Flagship Fund 2007 GP, received 92,796 shares through Flagship Fund 2007 GP's distribution.  The aforementioned distributions were made in accordance with the exemptions afforded by Rule 16a-13 and Rule 16a-9 of the Securities Exchange Act of 1934, as amended."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Shares held by Flagship Fund 2007. Flagship Fund 2007 GP is the general partner of Flagship Fund 2007. Dr. Afeyan is a manager of Flagship Fund 2007 GP and, for purposes of Flagship Fund 2007's investment in the Issuer, Dr. Afeyan may be deemed to have voting and investment power with respect to all shares held by Flagship Fund 2007. Each of the reporting persons disclaims beneficial ownership of the shares except to the extent, if any, of his or its pecuniary interest therein."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000899243-19-026439","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1222012/000089924319026439/doc4.xml","form_type":"4"}},{"id":3384477,"issuer":{"id":4261,"kind":"organization","name":"TransMedics Group, Inc.","symbol":"TMDX"},"owners":[{"id":97142,"kind":"organization","name":"Flagship Ventures Fund IV General Partner LLC","position":1,"cik":"0001508051","reported_name":"Flagship Ventures Fund IV General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":111426,"kind":"organization","name":"Flagship Ventures Fund IV, L.P.","position":2,"cik":"0001503559","reported_name":"Flagship Ventures Fund IV, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":107299,"kind":"organization","name":"Flagship Ventures 2007 General Partner LLC","position":3,"cik":"0001508053","reported_name":"Flagship Ventures 2007 General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154134,"kind":"organization","name":"Flagship Ventures Fund 2007, L.P.","position":4,"cik":"0001508052","reported_name":"Flagship Ventures Fund 2007, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":5,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2019-10-31T23:00:29.000Z","date":"2019-10-29","kind":"other","acquired":false,"shares":1469173,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On October 29, 2019, Flagship Ventures Fund IV, L.P. (\"Flagship Fund IV\") distributed to its limited partners and sole general partner, Flagship Ventures Fund IV General Partner LLC (\"Flagship Fund IV GP\"), pro rata and without consideration, 1,469,173 shares of the Issuer's common stock. Flagship Fund IV GP, in turn, distributed to its members, pro rata and without consideration, the 61,537 shares it received from Flagship Fund IV. Noubar B. Afeyan, Ph.D., a manager of Flagship Fund IV GP, received 27,799 shares through Flagship Fund IV GP's distribution.  The aforementioned distributions were made in accordance with the exemptions afforded by Rule 16a-13 and Rule 16a-9 of the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On October 29, 2019, Flagship Ventures Fund IV, L.P. (\"Flagship Fund IV\") distributed to its limited partners and sole general partner, Flagship Ventures Fund IV General Partner LLC (\"Flagship Fund IV GP\"), pro rata and without consideration, 1,469,173 shares of the Issuer's common stock. Flagship Fund IV GP, in turn, distributed to its members, pro rata and without consideration, the 61,537 shares it received from Flagship Fund IV. Noubar B. Afeyan, Ph.D., a manager of Flagship Fund IV GP, received 27,799 shares through Flagship Fund IV GP's distribution.  The aforementioned distributions were made in accordance with the exemptions afforded by Rule 16a-13 and Rule 16a-9 of the Securities Exchange Act of 1934, as amended."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Shares held by Flagship Fund IV. Flagship Fund IV GP is the general partner of Flagship Fund IV. Dr. Afeyan is a manager of Flagship Fund IV GP and, for purposes of Flagship Fund IV's investment in the Issuer, Dr. Afeyan may be deemed to have voting and investment power with respect to all shares held by Flagship Fund IV. Each of the reporting persons disclaims beneficial ownership of the shares except to the extent, if any, of his or its pecuniary interest therein.."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000899243-19-026439","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1222012/000089924319026439/doc4.xml","form_type":"4"}},{"id":3525682,"issuer":{"id":116059,"kind":"organization","name":"Axcella Health Inc.","symbol":"AXLA"},"owners":[{"id":97142,"kind":"organization","name":"Flagship Ventures Fund IV General Partner LLC","position":1,"cik":"0001508051","reported_name":"Flagship Ventures Fund IV General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":111426,"kind":"organization","name":"Flagship Ventures Fund IV, L.P.","position":2,"cik":"0001503559","reported_name":"Flagship Ventures Fund IV, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":126697,"kind":"organization","name":"Flagship Ventures Fund IV-Rx, L.P.","position":3,"cik":"0001590973","reported_name":"Flagship Ventures Fund IV-Rx, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":157564,"kind":"organization","name":"Flagship VentureLabs IV, LLC","position":4,"cik":"0001642578","reported_name":"Flagship VentureLabs IV, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":107299,"kind":"organization","name":"Flagship Ventures 2007 General Partner LLC","position":5,"cik":"0001508053","reported_name":"Flagship Ventures 2007 General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154134,"kind":"organization","name":"Flagship Ventures Fund 2007, L.P.","position":6,"cik":"0001508052","reported_name":"Flagship Ventures Fund 2007, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":69365,"kind":"person","name":"Flagship Ventures Opportunities Fund I General Partner LLC","position":7,"cik":"0001725004","reported_name":"Flagship Ventures Opportunities Fund I General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":69366,"kind":"person","name":"Flagship Ventures Opportunities Fund I, L.P.","position":8,"cik":"0001677345","reported_name":"Flagship Ventures Opportunities Fund I, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":9,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44658,"kind":"person","name":"Kania Edwin","position":10,"cik":"0001255927","reported_name":"KANIA EDWIN M JR","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series E Preferred Stock","published_at":"2019-05-15T20:18:59.000Z","date":"2019-05-13","kind":"exercise","acquired":false,"shares":895255,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F8","text":"Each share of Series E Preferred Stock converted into shares of the Issuer's Common Stock on a one-for-1.842 basis upon the closing of the Issuer's initial public offering."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"Each share of Series E Preferred Stock converted into shares of the Issuer's Common Stock on a one-for-1.842 basis upon the closing of the Issuer's initial public offering."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F8","text":"Each share of Series E Preferred Stock converted into shares of the Issuer's Common Stock on a one-for-1.842 basis upon the closing of the Issuer's initial public offering."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F8","text":"Each share of Series E Preferred Stock converted into shares of the Issuer's Common Stock on a one-for-1.842 basis upon the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F9","text":"Shares held by Flagship Ventures Opportunities Fund I, L.P. (\"Flagship Opportunities I\"). Flagship Ventures Opportunities Fund I General Partner LLC (\"Flagship Opportunities GP\") is the general partner of Flagship Opportunities I. Noubar B. Afeyan, Ph.D. serves as sole manager of Flagship Opportunities GP and may be deemed to possess sole voting and investment power with respect to all shares held by Flagship Opportunities I. 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Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, each outstanding share of Series B-1 preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms, determined by dividing the original issue price of $3.416 per share by a conversion price of $12.365, and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"kind","element":"transactionCoding","label":"F3","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, each outstanding share of Series B-1 preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms, determined by dividing the original issue price of $3.416 per share by a conversion price of $12.365, and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, each outstanding share of Series B-1 preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms, determined by dividing the original issue price of $3.416 per share by a conversion price of $12.365, and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, each outstanding share of Series B-1 preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms, determined by dividing the original issue price of $3.416 per share by a conversion price of $12.365, and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, each outstanding share of Series B-1 preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms, determined by dividing the original issue price of $3.416 per share by a conversion price of $12.365, and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Shares held by Flagship Ventures Fund 2007, L.P. (\"Flagship Fund 2007\"). Flagship Ventures 2007 General Partner LLC (\"Flagship Fund 2007 GP\") is the general partner of Flagship Fund 2007. Dr. Afeyan is a manager of Flagship Fund 2007 GP and, for purposes of Flagship Fund 2007's investment in the Issuer, Dr. Afeyan may be deemed to have voting and investment power with respect to all shares held by Flagship Fund 2007. Each of the reporting persons disclaims beneficial ownership of the shares except to the extent, if any, of his or its pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":132817},"source":{"system":"sec-edgar","filing":"0000899243-19-012303","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1222012/000089924319012303/doc4.xml","form_type":"4"}},{"id":3537853,"issuer":{"id":4261,"kind":"organization","name":"TransMedics Group, Inc.","symbol":"TMDX"},"owners":[{"id":97142,"kind":"organization","name":"Flagship Ventures Fund IV General Partner LLC","position":1,"cik":"0001508051","reported_name":"Flagship Ventures Fund IV General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":111426,"kind":"organization","name":"Flagship Ventures Fund IV, L.P.","position":2,"cik":"0001503559","reported_name":"Flagship Ventures Fund IV, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":107299,"kind":"organization","name":"Flagship Ventures 2007 General Partner LLC","position":3,"cik":"0001508053","reported_name":"Flagship Ventures 2007 General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154134,"kind":"organization","name":"Flagship Ventures Fund 2007, L.P.","position":4,"cik":"0001508052","reported_name":"Flagship Ventures Fund 2007, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":5,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series F Convertible Preferred Stock","published_at":"2019-05-06T22:47:49.000Z","date":"2019-05-06","kind":"exercise","acquired":false,"shares":450958,"ownership":{"direct":false,"nature":"By Flagship Ventures Fund 2007, L.P."},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Shares held by Flagship Ventures Fund 2007, L.P. (\"Flagship Fund 2007\"). Flagship Ventures 2007 General Partner LLC (\"Flagship Fund 2007 GP\") is the general partner of Flagship Fund 2007. Dr. Afeyan is a manager of Flagship Fund 2007 GP and, for purposes of Flagship Fund 2007's investment in the Issuer, Dr. Afeyan may be deemed to have voting and investment power with respect to all shares held by Flagship Fund 2007. Each of the reporting persons disclaims beneficial ownership of the shares except to the extent, if any, of his or its pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":128845},"source":{"system":"sec-edgar","filing":"0000899243-19-012303","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1222012/000089924319012303/doc4.xml","form_type":"4"}},{"id":3537852,"issuer":{"id":4261,"kind":"organization","name":"TransMedics Group, Inc.","symbol":"TMDX"},"owners":[{"id":97142,"kind":"organization","name":"Flagship Ventures Fund IV General Partner LLC","position":1,"cik":"0001508051","reported_name":"Flagship Ventures Fund IV General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":111426,"kind":"organization","name":"Flagship Ventures Fund IV, L.P.","position":2,"cik":"0001503559","reported_name":"Flagship Ventures Fund IV, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":107299,"kind":"organization","name":"Flagship Ventures 2007 General Partner LLC","position":3,"cik":"0001508053","reported_name":"Flagship Ventures 2007 General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154134,"kind":"organization","name":"Flagship Ventures Fund 2007, L.P.","position":4,"cik":"0001508052","reported_name":"Flagship Ventures Fund 2007, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":5,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series D Convertible Preferred Stock","published_at":"2019-05-06T22:47:49.000Z","date":"2019-05-06","kind":"exercise","acquired":false,"shares":600000,"ownership":{"direct":false,"nature":"By Flagship Ventures Fund 2007, L.P."},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Shares held by Flagship Ventures Fund 2007, L.P. (\"Flagship Fund 2007\"). Flagship Ventures 2007 General Partner LLC (\"Flagship Fund 2007 GP\") is the general partner of Flagship Fund 2007. Dr. Afeyan is a manager of Flagship Fund 2007 GP and, for purposes of Flagship Fund 2007's investment in the Issuer, Dr. Afeyan may be deemed to have voting and investment power with respect to all shares held by Flagship Fund 2007. Each of the reporting persons disclaims beneficial ownership of the shares except to the extent, if any, of his or its pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":171428},"source":{"system":"sec-edgar","filing":"0000899243-19-012303","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1222012/000089924319012303/doc4.xml","form_type":"4"}},{"id":3537851,"issuer":{"id":4261,"kind":"organization","name":"TransMedics Group, Inc.","symbol":"TMDX"},"owners":[{"id":97142,"kind":"organization","name":"Flagship Ventures Fund IV General Partner LLC","position":1,"cik":"0001508051","reported_name":"Flagship Ventures Fund IV General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":111426,"kind":"organization","name":"Flagship Ventures Fund IV, L.P.","position":2,"cik":"0001503559","reported_name":"Flagship Ventures Fund IV, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":107299,"kind":"organization","name":"Flagship Ventures 2007 General Partner LLC","position":3,"cik":"0001508053","reported_name":"Flagship Ventures 2007 General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154134,"kind":"organization","name":"Flagship Ventures Fund 2007, L.P.","position":4,"cik":"0001508052","reported_name":"Flagship Ventures Fund 2007, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":5,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series C Convertible Preferred Stock","published_at":"2019-05-06T22:47:49.000Z","date":"2019-05-06","kind":"exercise","acquired":false,"shares":1257465,"ownership":{"direct":false,"nature":"By Flagship Ventures Fund 2007, L.P."},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Shares held by Flagship Ventures Fund 2007, L.P. (\"Flagship Fund 2007\"). Flagship Ventures 2007 General Partner LLC (\"Flagship Fund 2007 GP\") is the general partner of Flagship Fund 2007. Dr. Afeyan is a manager of Flagship Fund 2007 GP and, for purposes of Flagship Fund 2007's investment in the Issuer, Dr. Afeyan may be deemed to have voting and investment power with respect to all shares held by Flagship Fund 2007. Each of the reporting persons disclaims beneficial ownership of the shares except to the extent, if any, of his or its pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":359276},"source":{"system":"sec-edgar","filing":"0000899243-19-012303","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1222012/000089924319012303/doc4.xml","form_type":"4"}},{"id":3537850,"issuer":{"id":4261,"kind":"organization","name":"TransMedics Group, Inc.","symbol":"TMDX"},"owners":[{"id":97142,"kind":"organization","name":"Flagship Ventures Fund IV General Partner LLC","position":1,"cik":"0001508051","reported_name":"Flagship Ventures Fund IV General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":111426,"kind":"organization","name":"Flagship Ventures Fund IV, L.P.","position":2,"cik":"0001503559","reported_name":"Flagship Ventures Fund IV, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":107299,"kind":"organization","name":"Flagship Ventures 2007 General Partner LLC","position":3,"cik":"0001508053","reported_name":"Flagship Ventures 2007 General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154134,"kind":"organization","name":"Flagship Ventures Fund 2007, L.P.","position":4,"cik":"0001508052","reported_name":"Flagship Ventures Fund 2007, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":5,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series F Convertible Preferred Stock","published_at":"2019-05-06T22:47:49.000Z","date":"2019-05-06","kind":"exercise","acquired":false,"shares":992110,"ownership":{"direct":false,"nature":"By Flagship Ventures Fund IV, L.P."},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Shares held by Flagship Ventures Fund IV, L.P. (\"Flagship Fund IV\"). Flagship Ventures Fund IV General Partner LLC (\"Flagship Fund IV GP\") is the general partner of Flagship Fund IV. Noubar B. Afeyan, Ph.D. is a manager of Flagship Fund IV GP and, for purposes of Flagship Fund IV's investment in the Issuer, Dr. Afeyan may be deemed to have voting and investment power with respect to all shares held by Flagship Fund IV. Each of the reporting persons disclaims beneficial ownership of the shares except to the extent, if any, of his or its pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":283460},"source":{"system":"sec-edgar","filing":"0000899243-19-012303","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1222012/000089924319012303/doc4.xml","form_type":"4"}},{"id":3537849,"issuer":{"id":4261,"kind":"organization","name":"TransMedics Group, Inc.","symbol":"TMDX"},"owners":[{"id":97142,"kind":"organization","name":"Flagship Ventures Fund IV General Partner LLC","position":1,"cik":"0001508051","reported_name":"Flagship Ventures Fund IV General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":111426,"kind":"organization","name":"Flagship Ventures Fund IV, L.P.","position":2,"cik":"0001503559","reported_name":"Flagship Ventures Fund IV, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":107299,"kind":"organization","name":"Flagship Ventures 2007 General Partner LLC","position":3,"cik":"0001508053","reported_name":"Flagship Ventures 2007 General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154134,"kind":"organization","name":"Flagship Ventures Fund 2007, L.P.","position":4,"cik":"0001508052","reported_name":"Flagship Ventures Fund 2007, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":5,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series D Convertible Preferred Stock","published_at":"2019-05-06T22:47:49.000Z","date":"2019-05-06","kind":"exercise","acquired":false,"shares":1400000,"ownership":{"direct":false,"nature":"By Flagship Ventures Fund IV, L.P."},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Shares held by Flagship Ventures Fund IV, L.P. (\"Flagship Fund IV\"). Flagship Ventures Fund IV General Partner LLC (\"Flagship Fund IV GP\") is the general partner of Flagship Fund IV. Noubar B. Afeyan, Ph.D. is a manager of Flagship Fund IV GP and, for purposes of Flagship Fund IV's investment in the Issuer, Dr. Afeyan may be deemed to have voting and investment power with respect to all shares held by Flagship Fund IV. Each of the reporting persons disclaims beneficial ownership of the shares except to the extent, if any, of his or its pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":400000},"source":{"system":"sec-edgar","filing":"0000899243-19-012303","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1222012/000089924319012303/doc4.xml","form_type":"4"}},{"id":3537848,"issuer":{"id":4261,"kind":"organization","name":"TransMedics Group, Inc.","symbol":"TMDX"},"owners":[{"id":97142,"kind":"organization","name":"Flagship Ventures Fund IV General Partner LLC","position":1,"cik":"0001508051","reported_name":"Flagship Ventures Fund IV General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":111426,"kind":"organization","name":"Flagship Ventures Fund IV, L.P.","position":2,"cik":"0001503559","reported_name":"Flagship Ventures Fund IV, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":107299,"kind":"organization","name":"Flagship Ventures 2007 General Partner LLC","position":3,"cik":"0001508053","reported_name":"Flagship Ventures 2007 General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154134,"kind":"organization","name":"Flagship Ventures Fund 2007, L.P.","position":4,"cik":"0001508052","reported_name":"Flagship Ventures Fund 2007, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":5,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series C Convertible Preferred Stock","published_at":"2019-05-06T22:47:49.000Z","date":"2019-05-06","kind":"exercise","acquired":false,"shares":2000000,"ownership":{"direct":false,"nature":"By Flagship Ventures Fund IV, L.P."},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Shares held by Flagship Ventures Fund IV, L.P. (\"Flagship Fund IV\"). Flagship Ventures Fund IV General Partner LLC (\"Flagship Fund IV GP\") is the general partner of Flagship Fund IV. Noubar B. Afeyan, Ph.D. is a manager of Flagship Fund IV GP and, for purposes of Flagship Fund IV's investment in the Issuer, Dr. Afeyan may be deemed to have voting and investment power with respect to all shares held by Flagship Fund IV. Each of the reporting persons disclaims beneficial ownership of the shares except to the extent, if any, of his or its pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":571428},"source":{"system":"sec-edgar","filing":"0000899243-19-012303","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1222012/000089924319012303/doc4.xml","form_type":"4"}},{"id":3537847,"issuer":{"id":4261,"kind":"organization","name":"TransMedics Group, Inc.","symbol":"TMDX"},"owners":[{"id":97142,"kind":"organization","name":"Flagship Ventures Fund IV General Partner LLC","position":1,"cik":"0001508051","reported_name":"Flagship Ventures Fund IV General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":111426,"kind":"organization","name":"Flagship Ventures Fund IV, L.P.","position":2,"cik":"0001503559","reported_name":"Flagship Ventures Fund IV, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":107299,"kind":"organization","name":"Flagship Ventures 2007 General Partner LLC","position":3,"cik":"0001508053","reported_name":"Flagship Ventures 2007 General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154134,"kind":"organization","name":"Flagship Ventures Fund 2007, L.P.","position":4,"cik":"0001508052","reported_name":"Flagship Ventures Fund 2007, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":5,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2019-05-06T22:47:49.000Z","date":"2019-05-06","kind":"exercise","acquired":true,"shares":792366,"ownership":{"direct":false,"nature":"By Flagship Ventures Fund 2007, L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"kind","element":"transactionCoding","label":"F3","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, each outstanding share of Series B-1 preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms, determined by dividing the original issue price of $3.416 per share by a conversion price of $12.365, and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, each outstanding share of Series B-1 preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms, determined by dividing the original issue price of $3.416 per share by a conversion price of $12.365, and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Shares held by Flagship Ventures Fund 2007, L.P. (\"Flagship Fund 2007\"). Flagship Ventures 2007 General Partner LLC (\"Flagship Fund 2007 GP\") is the general partner of Flagship Fund 2007. Dr. Afeyan is a manager of Flagship Fund 2007 GP and, for purposes of Flagship Fund 2007's investment in the Issuer, Dr. Afeyan may be deemed to have voting and investment power with respect to all shares held by Flagship Fund 2007. Each of the reporting persons disclaims beneficial ownership of the shares except to the extent, if any, of his or its pecuniary interest therein."}],"balance_after":1061102,"source":{"system":"sec-edgar","filing":"0000899243-19-012303","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1222012/000089924319012303/doc4.xml","form_type":"4"}},{"id":3537846,"issuer":{"id":4261,"kind":"organization","name":"TransMedics Group, Inc.","symbol":"TMDX"},"owners":[{"id":97142,"kind":"organization","name":"Flagship Ventures Fund IV General Partner LLC","position":1,"cik":"0001508051","reported_name":"Flagship Ventures Fund IV General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":111426,"kind":"organization","name":"Flagship Ventures Fund IV, L.P.","position":2,"cik":"0001503559","reported_name":"Flagship Ventures Fund IV, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":107299,"kind":"organization","name":"Flagship Ventures 2007 General Partner LLC","position":3,"cik":"0001508053","reported_name":"Flagship Ventures 2007 General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154134,"kind":"organization","name":"Flagship Ventures Fund 2007, L.P.","position":4,"cik":"0001508052","reported_name":"Flagship Ventures Fund 2007, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":5,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2019-05-06T22:47:49.000Z","date":"2019-05-06","kind":"exercise","acquired":true,"shares":1254888,"ownership":{"direct":false,"nature":"By Flagship Ventures Fund IV, L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The Preferred Stock reported herein is preferred stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Merger Agreement, such Series C, D and F preferred stock of TransMedics, Inc. was converted into shares of common stock of the Issuer based on (i) the one-for-one ratio on which such shares of preferred stock of TransMedics Inc. were convertible into shares of common stock of TransMedics Inc. according to their terms and (ii) the 3.5-for-one ratio on which shares of common stock of TransMedics, Inc. were converted into shares of common stock of the Issuer. The Preferred Stock has no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Shares held by Flagship Ventures Fund IV, L.P. (\"Flagship Fund IV\"). Flagship Ventures Fund IV General Partner LLC (\"Flagship Fund IV GP\") is the general partner of Flagship Fund IV. Noubar B. Afeyan, Ph.D. is a manager of Flagship Fund IV GP and, for purposes of Flagship Fund IV's investment in the Issuer, Dr. Afeyan may be deemed to have voting and investment power with respect to all shares held by Flagship Fund IV. Each of the reporting persons disclaims beneficial ownership of the shares except to the extent, if any, of his or its pecuniary interest therein."}],"balance_after":1469173,"source":{"system":"sec-edgar","filing":"0000899243-19-012303","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1222012/000089924319012303/doc4.xml","form_type":"4"}},{"id":3537845,"issuer":{"id":4261,"kind":"organization","name":"TransMedics Group, Inc.","symbol":"TMDX"},"owners":[{"id":97142,"kind":"organization","name":"Flagship Ventures Fund IV General Partner LLC","position":1,"cik":"0001508051","reported_name":"Flagship Ventures Fund IV General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":111426,"kind":"organization","name":"Flagship Ventures Fund IV, L.P.","position":2,"cik":"0001503559","reported_name":"Flagship Ventures Fund IV, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":107299,"kind":"organization","name":"Flagship Ventures 2007 General Partner LLC","position":3,"cik":"0001508053","reported_name":"Flagship Ventures 2007 General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154134,"kind":"organization","name":"Flagship Ventures Fund 2007, L.P.","position":4,"cik":"0001508052","reported_name":"Flagship Ventures Fund 2007, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":5,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2019-05-06T22:47:49.000Z","date":"2019-05-06","kind":"other","acquired":true,"shares":268736,"ownership":{"direct":false,"nature":"By Flagship Ventures Fund 2007, L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The Common Stock reported herein being disposed of is common stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Agreement and Plan of Merger and Reorganization by and among the Issuer, TransMedics, Inc. and TMDX, Inc., dated April 15, 2019 (the \"Merger Agreement\") such common stock of TransMedics, Inc. was converted into shares of common stock of the Issuer on a 3.5-for-one basis."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The Common Stock reported herein being disposed of is common stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Agreement and Plan of Merger and Reorganization by and among the Issuer, TransMedics, Inc. and TMDX, Inc., dated April 15, 2019 (the \"Merger Agreement\") such common stock of TransMedics, Inc. was converted into shares of common stock of the Issuer on a 3.5-for-one basis."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Shares held by Flagship Ventures Fund 2007, L.P. (\"Flagship Fund 2007\"). Flagship Ventures 2007 General Partner LLC (\"Flagship Fund 2007 GP\") is the general partner of Flagship Fund 2007. Dr. Afeyan is a manager of Flagship Fund 2007 GP and, for purposes of Flagship Fund 2007's investment in the Issuer, Dr. Afeyan may be deemed to have voting and investment power with respect to all shares held by Flagship Fund 2007. Each of the reporting persons disclaims beneficial ownership of the shares except to the extent, if any, of his or its pecuniary interest therein."}],"balance_after":268736,"source":{"system":"sec-edgar","filing":"0000899243-19-012303","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1222012/000089924319012303/doc4.xml","form_type":"4"}},{"id":3537844,"issuer":{"id":4261,"kind":"organization","name":"TransMedics Group, Inc.","symbol":"TMDX"},"owners":[{"id":97142,"kind":"organization","name":"Flagship Ventures Fund IV General Partner LLC","position":1,"cik":"0001508051","reported_name":"Flagship Ventures Fund IV General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":111426,"kind":"organization","name":"Flagship Ventures Fund IV, L.P.","position":2,"cik":"0001503559","reported_name":"Flagship Ventures Fund IV, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":107299,"kind":"organization","name":"Flagship Ventures 2007 General Partner LLC","position":3,"cik":"0001508053","reported_name":"Flagship Ventures 2007 General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154134,"kind":"organization","name":"Flagship Ventures Fund 2007, L.P.","position":4,"cik":"0001508052","reported_name":"Flagship Ventures Fund 2007, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":5,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2019-05-06T22:47:49.000Z","date":"2019-05-06","kind":"other","acquired":false,"shares":940579,"ownership":{"direct":false,"nature":"By Flagship Ventures Fund 2007, L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The Common Stock reported herein being disposed of is common stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Agreement and Plan of Merger and Reorganization by and among the Issuer, TransMedics, Inc. and TMDX, Inc., dated April 15, 2019 (the \"Merger Agreement\") such common stock of TransMedics, Inc. was converted into shares of common stock of the Issuer on a 3.5-for-one basis."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The Common Stock reported herein being disposed of is common stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the Agreement and Plan of Merger and Reorganization by and among the Issuer, TransMedics, Inc. and TMDX, Inc., dated April 15, 2019 (the \"Merger Agreement\") such common stock of TransMedics, Inc. was converted into shares of common stock of the Issuer on a 3.5-for-one basis."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Shares held by Flagship Ventures Fund 2007, L.P. (\"Flagship Fund 2007\"). Flagship Ventures 2007 General Partner LLC (\"Flagship Fund 2007 GP\") is the general partner of Flagship Fund 2007. Dr. Afeyan is a manager of Flagship Fund 2007 GP and, for purposes of Flagship Fund 2007's investment in the Issuer, Dr. Afeyan may be deemed to have voting and investment power with respect to all shares held by Flagship Fund 2007. 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