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Schwarzman."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"Each of the Reporting Persons (other than to the extent it directly holds securities reported herein) disclaims beneficial ownership of the securities held by the other Reporting Persons, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than to the extent it directly holds securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose."}],"balance_after":1593342,"source":{"system":"sec-edgar","filing":"0000899243-20-020805","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1070844/000089924320020805/doc4.xml","form_type":"4"}},{"id":387818,"issuer":{"id":5011,"kind":"organization","name":"Annexon, Inc.","symbol":"ANNX"},"owners":[{"id":15491,"kind":"organization","name":"Clarus Lifesciences III, L.P.","position":1,"cik":"0001597143","reported_name":"Clarus Lifesciences III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":15492,"kind":"organization","name":"Clarus Ventures III GP, L.P.","position":2,"cik":"0001620148","reported_name":"Clarus Ventures III GP, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":15493,"kind":"organization","name":"Blackstone Clarus III L.L.C.","position":3,"cik":"0001762202","reported_name":"Blackstone Clarus III L.L.C.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":14230,"kind":"organization","name":"Blackstone Holdings II L.P.","position":4,"cik":"0001484870","reported_name":"Blackstone Holdings II L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":14231,"kind":"organization","name":"Blackstone Holdings I/II GP L.L.C.","position":5,"cik":"0001464695","reported_name":"Blackstone Holdings I/II GP L.L.C.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2861,"kind":"organization","name":"Blackstone Inc.","position":6,"cik":"0001393818","reported_name":"Blackstone Group Inc","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":14232,"kind":"organization","name":"Blackstone Group Management L.L.C.","position":7,"cik":"0001404071","reported_name":"Blackstone Group Management L.L.C.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":14233,"kind":"person","name":"SCHWARZMAN STEPHEN A","position":8,"cik":"0001070844","reported_name":"SCHWARZMAN STEPHEN A","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2020-07-31T00:00:16.000Z","date":"2020-07-28","kind":"exercise","acquired":true,"shares":643208,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares of Series A-1 Redeemable Convertible Preferred Stock of the Issuer were automatically converted on a 1-for-8.81 basis into common stock of the Issuer (\"Common Stock\") immediately prior to the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Reflects securities held directly by Clarus Lifesciences III, L.P. Clarus Ventures III GP, L.P. is the general partner of Clarus Lifesciences III, L.P. Blackstone Clarus III L.L.C. is the general partner of Clarus Ventures III GP, L.P. The sole member of Blackstone Clarus III L.L.C. is Blackstone Holdings II L.P. The general partner of Blackstone Holdings II L.P. is Blackstone Holdings I/II GP L.L.C. The sole member of Blackstone Holdings I/II GP L.L.C. is The Blackstone Group Inc. The sole holder of the Class C common stock of The Blackstone Group Inc. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly-owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"Each of the Reporting Persons (other than to the extent it directly holds securities reported herein) disclaims beneficial ownership of the securities held by the other Reporting Persons, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than to the extent it directly holds securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose."}],"balance_after":643208,"source":{"system":"sec-edgar","filing":"0000899243-20-020805","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1070844/000089924320020805/doc4.xml","form_type":"4"}},{"id":3514647,"issuer":{"id":5328,"kind":"organization","name":"Tectonic Therapeutic, Inc.","symbol":"TECX"},"owners":[{"id":15491,"kind":"organization","name":"Clarus Lifesciences III, L.P.","position":1,"cik":"0001597143","reported_name":"Clarus Lifesciences III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":15492,"kind":"organization","name":"Clarus Ventures III GP, L.P.","position":2,"cik":"0001620148","reported_name":"Clarus Ventures III GP, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2019-05-22T21:02:56.000Z","date":"2019-05-20","kind":"other","acquired":false,"shares":1481163,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents a distribution of shares of common stock of the issuer (the \"Common Stock\") previously held directly by Clarus Lifesciences III, L.P. 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Clarus GP then distributed the  202,995 shares of Common Stock it received in the Clarus III Distribution to its limited partners."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These securities are held directly by Clarus III. Clarus GP is the sole general partner of Clarus III. Blackstone Clarus III L.L.C. is the sole general partner of Clarus GP. The sole member of Blackstone Clarus III L.L.C. is Blackstone Holdings II L.P. The sole general partner of Blackstone Holdings II L.P. is Blackstone Holdings I/II GP Inc. The controlling shareholder of Blackstone Holdings I/II GP Inc. is The Blackstone Group L.P. The sole general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly-owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. 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The Preferred Stock had no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Each share of Series B Preferred Stock, Series B-1 Tranche A Convertible Preferred Stock and Series B-1 Tranche B Convertible Preferred Stock (collectively, the \"Preferred Stock\") automatically converted into Common Stock on a 20.728-for-one basis upon the closing of the Issuer's initial public offering. The Preferred Stock had no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each share of Series B Preferred Stock, Series B-1 Tranche A Convertible Preferred Stock and Series B-1 Tranche B Convertible Preferred Stock (collectively, the \"Preferred Stock\") automatically converted into Common Stock on a 20.728-for-one basis upon the closing of the Issuer's initial public offering. 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The Preferred Stock had no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Each share of Series B Preferred Stock, Series B-1 Tranche A Convertible Preferred Stock and Series B-1 Tranche B Convertible Preferred Stock (collectively, the \"Preferred Stock\") automatically converted into Common Stock on a 20.728-for-one basis upon the closing of the Issuer's initial public offering. The Preferred Stock had no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each share of Series B Preferred Stock, Series B-1 Tranche A Convertible Preferred Stock and Series B-1 Tranche B Convertible Preferred Stock (collectively, the \"Preferred Stock\") automatically converted into Common Stock on a 20.728-for-one basis upon the closing of the Issuer's initial public offering. 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