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The Preferred Stock had no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock (collectively, the \"Preferred Stock\") automatically converted into one share of the Issuer's common stock immediately prior to the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Stock had no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock (collectively, the \"Preferred Stock\") automatically converted into one share of the Issuer's common stock immediately prior to the closing of the Issuer's initial public offering without payment of additional consideration. 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(Hornet Co-Invest, L.P., together with B Capital Healthcare I, L.P., and B Capital Global Growth III, L.P., \"B Capital\"). Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Exchange Act, except to the extent of its pecuniary interest therein, if any. 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(Hornet Co-Invest, L.P., together with B Capital Healthcare I, L.P., and B Capital Global Growth III, L.P., \"B Capital\"). Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Exchange Act, except to the extent of its pecuniary interest therein, if any. 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(Hornet Co-Invest, L.P., together with B Capital Healthcare I, L.P., and B Capital Global Growth III, L.P., \"B Capital\"). Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Exchange Act, except to the extent of its pecuniary interest therein, if any. This report shall not be deemed an admission that any of the Reporting Persons is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":2235486},"source":{"system":"sec-edgar","filing":"0000950170-25-098549","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1997306/000095017025098549/ownership.xml","form_type":"4"}},{"id":1082267,"issuer":{"id":5551,"kind":"organization","name":"CARLSMED, INC.","symbol":"CARL"},"owners":[{"id":77265,"kind":"organization","name":"B CAPITAL GROUP MANAGEMENT, L.P.","position":1,"cik":"0001997306","reported_name":"B CAPITAL GROUP MANAGEMENT, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77266,"kind":"organization","name":"B Capital Global Growth III, L.P.","position":2,"cik":"0001911138","reported_name":"B Capital Global Growth III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77267,"kind":"organization","name":"B Capital Healthcare I, L.P.","position":3,"cik":"0001875322","reported_name":"B Capital Healthcare I, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77268,"kind":"organization","name":"Hornet Co-Invest Investors, Ltd.","position":4,"cik":"0002077425","reported_name":"Hornet Co-Invest Investors, Ltd.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77269,"kind":"organization","name":"Hornet Co-Invest, LP","position":5,"cik":"0002077424","reported_name":"Hornet Co-Invest, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series B Preferred Stock","published_at":"2025-07-24T20:51:14.000Z","date":"2025-07-24","kind":"exercise","planned":false,"acquired":false,"shares":1445020,"ownership":{"direct":false,"nature":"By B Capital Global Growth III, L.P."},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock (collectively, the \"Preferred Stock\") automatically converted into one share of the Issuer's common stock immediately prior to the closing of the Issuer's initial public offering without payment of additional consideration. 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(Hornet Co-Invest, L.P., together with B Capital Healthcare I, L.P., and B Capital Global Growth III, L.P., \"B Capital\"). Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Exchange Act, except to the extent of its pecuniary interest therein, if any. 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This report shall not be deemed an admission that any of the Reporting Persons is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose."}],"balance_after":931452,"source":{"system":"sec-edgar","filing":"0000950170-25-098549","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1997306/000095017025098549/ownership.xml","form_type":"4"}},{"id":1082265,"issuer":{"id":5551,"kind":"organization","name":"CARLSMED, INC.","symbol":"CARL"},"owners":[{"id":77265,"kind":"organization","name":"B CAPITAL GROUP MANAGEMENT, L.P.","position":1,"cik":"0001997306","reported_name":"B CAPITAL GROUP MANAGEMENT, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77266,"kind":"organization","name":"B Capital Global Growth III, L.P.","position":2,"cik":"0001911138","reported_name":"B Capital Global Growth III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77267,"kind":"organization","name":"B Capital Healthcare I, L.P.","position":3,"cik":"0001875322","reported_name":"B Capital Healthcare I, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77268,"kind":"organization","name":"Hornet Co-Invest Investors, Ltd.","position":4,"cik":"0002077425","reported_name":"Hornet Co-Invest Investors, Ltd.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77269,"kind":"organization","name":"Hornet Co-Invest, LP","position":5,"cik":"0002077424","reported_name":"Hornet Co-Invest, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-07-24T20:51:14.000Z","date":"2025-07-24","kind":"exercise","planned":false,"acquired":true,"shares":2376472,"ownership":{"direct":false,"nature":"By B Capital Healthcare I, L.P."},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock (collectively, the \"Preferred Stock\") automatically converted into one share of the Issuer's common stock immediately prior to the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Stock had no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Shares held by B Capital Healthcare I, L.P."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"B Capital Group Management, LP is the manager of B Capital Global Growth III, L.P. and B Capital Healthcare I, L.P. Hornet-Co-Invest Investors, Ltd. is the ultimate general partner of Hornet Co-Invest, L.P. (Hornet Co-Invest, L.P., together with B Capital Healthcare I, L.P., and B Capital Global Growth III, L.P., \"B Capital\"). Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Exchange Act, except to the extent of its pecuniary interest therein, if any. This report shall not be deemed an admission that any of the Reporting Persons is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose."}],"balance_after":2376472,"source":{"system":"sec-edgar","filing":"0000950170-25-098549","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1997306/000095017025098549/ownership.xml","form_type":"4"}},{"id":1082264,"issuer":{"id":5551,"kind":"organization","name":"CARLSMED, INC.","symbol":"CARL"},"owners":[{"id":77265,"kind":"organization","name":"B CAPITAL GROUP MANAGEMENT, L.P.","position":1,"cik":"0001997306","reported_name":"B CAPITAL GROUP MANAGEMENT, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77266,"kind":"organization","name":"B Capital Global Growth III, L.P.","position":2,"cik":"0001911138","reported_name":"B Capital Global Growth III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77267,"kind":"organization","name":"B Capital Healthcare I, L.P.","position":3,"cik":"0001875322","reported_name":"B Capital Healthcare I, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77268,"kind":"organization","name":"Hornet Co-Invest Investors, Ltd.","position":4,"cik":"0002077425","reported_name":"Hornet Co-Invest Investors, Ltd.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77269,"kind":"organization","name":"Hornet Co-Invest, LP","position":5,"cik":"0002077424","reported_name":"Hornet Co-Invest, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-07-24T20:51:14.000Z","date":"2025-07-24","kind":"purchase","planned":false,"acquired":true,"shares":1333333,"price":15,"value":19999995.0,"ownership":{"direct":false,"nature":"By B Capital Global Growth III, L.P."},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Shares held by B Capital Global Growth III, L.P."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"B Capital Group Management, LP is the manager of B Capital Global Growth III, L.P. and B Capital Healthcare I, L.P. 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This report shall not be deemed an admission that any of the Reporting Persons is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose."}],"balance_after":5013839,"source":{"system":"sec-edgar","filing":"0000950170-25-098549","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1997306/000095017025098549/ownership.xml","form_type":"4"}},{"id":1082263,"issuer":{"id":5551,"kind":"organization","name":"CARLSMED, INC.","symbol":"CARL"},"owners":[{"id":77265,"kind":"organization","name":"B CAPITAL GROUP MANAGEMENT, L.P.","position":1,"cik":"0001997306","reported_name":"B CAPITAL GROUP MANAGEMENT, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77266,"kind":"organization","name":"B Capital Global Growth III, L.P.","position":2,"cik":"0001911138","reported_name":"B Capital Global Growth III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77267,"kind":"organization","name":"B Capital Healthcare I, L.P.","position":3,"cik":"0001875322","reported_name":"B Capital Healthcare I, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77268,"kind":"organization","name":"Hornet Co-Invest Investors, Ltd.","position":4,"cik":"0002077425","reported_name":"Hornet Co-Invest Investors, Ltd.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77269,"kind":"organization","name":"Hornet Co-Invest, LP","position":5,"cik":"0002077424","reported_name":"Hornet Co-Invest, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-07-24T20:51:14.000Z","date":"2025-07-24","kind":"exercise","planned":false,"acquired":true,"shares":3680506,"ownership":{"direct":false,"nature":"By B Capital Global Growth III, L.P."},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock (collectively, the \"Preferred Stock\") automatically converted into one share of the Issuer's common stock immediately prior to the closing of the Issuer's initial public offering without payment of additional consideration. 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This report shall not be deemed an admission that any of the Reporting Persons is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose."}],"balance_after":3680506,"source":{"system":"sec-edgar","filing":"0000950170-25-098549","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1997306/000095017025098549/ownership.xml","form_type":"4"}}]}