{"transactions":[{"id":1133425,"issuer":{"id":377,"kind":"organization","name":"Hinge Health, Inc.","symbol":"HNGE"},"owners":[{"id":79221,"kind":"organization","name":"Atomico Advisors IV, Ltd.","position":1,"cik":"0002069654","reported_name":"Atomico Advisors IV, Ltd.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":79222,"kind":"organization","name":"Atomico IV, L.P.","position":2,"cik":"0001652865","reported_name":"Atomico IV, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":79223,"kind":"organization","name":"Atomico IV (Guernsey), L.P.","position":3,"cik":"0002067737","reported_name":"Atomico IV (Guernsey), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2025-05-27T22:38:12.000Z","date":"2025-05-23","kind":"exercise","planned":false,"acquired":false,"shares":2651103,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Atomico Advisors IV, Ltd. is the general partner of Atomico IV L.P. (\"Atomico IV\") and Atomico IV (Guernsey), L.P. (\"Atomico IV (Guernsey)\"). As a result, Atomico Advisors IV, Ltd. may be deemed to have beneficial ownership of the shares held by each of Atomico IV and Atomico IV (Guernsey)."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Following the transactions reported in this Form 4, the Reporting Persons beneficially own (i) 5,476,823 shares of Class B Common Stock held by Atomico IV and (ii) 1,236,240 shares of Class B Common Stock held by Atomico IV (Guernsey)."}],"balance_after":6713063,"derivative":{"underlying":"Class A Common Stock","underlying_shares":2651103},"source":{"system":"sec-edgar","filing":"0000950170-25-077936","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1673743/000095017025077936/ownership.xml","form_type":"4"}},{"id":1133424,"issuer":{"id":377,"kind":"organization","name":"Hinge Health, Inc.","symbol":"HNGE"},"owners":[{"id":79221,"kind":"organization","name":"Atomico Advisors IV, Ltd.","position":1,"cik":"0002069654","reported_name":"Atomico Advisors IV, Ltd.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":79222,"kind":"organization","name":"Atomico IV, L.P.","position":2,"cik":"0001652865","reported_name":"Atomico IV, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":79223,"kind":"organization","name":"Atomico IV (Guernsey), L.P.","position":3,"cik":"0002067737","reported_name":"Atomico IV (Guernsey), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2025-05-27T22:38:12.000Z","date":"2025-05-23","kind":"other","planned":false,"acquired":true,"shares":9364166,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Atomico Advisors IV, Ltd. is the general partner of Atomico IV L.P. (\"Atomico IV\") and Atomico IV (Guernsey), L.P. (\"Atomico IV (Guernsey)\"). As a result, Atomico Advisors IV, Ltd. may be deemed to have beneficial ownership of the shares held by each of Atomico IV and Atomico IV (Guernsey)."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Following the transactions reported in this Form 4, the Reporting Persons beneficially own (i) 5,476,823 shares of Class B Common Stock held by Atomico IV and (ii) 1,236,240 shares of Class B Common Stock held by Atomico IV (Guernsey)."}],"balance_after":9364166,"derivative":{"underlying":"Class A Common Stock","underlying_shares":9364166},"source":{"system":"sec-edgar","filing":"0000950170-25-077936","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1673743/000095017025077936/ownership.xml","form_type":"4"}},{"id":1133423,"issuer":{"id":377,"kind":"organization","name":"Hinge Health, Inc.","symbol":"HNGE"},"owners":[{"id":79221,"kind":"organization","name":"Atomico Advisors IV, Ltd.","position":1,"cik":"0002069654","reported_name":"Atomico Advisors IV, Ltd.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":79222,"kind":"organization","name":"Atomico IV, L.P.","position":2,"cik":"0001652865","reported_name":"Atomico IV, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":79223,"kind":"organization","name":"Atomico IV (Guernsey), L.P.","position":3,"cik":"0002067737","reported_name":"Atomico IV (Guernsey), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series D Preferred Stock","published_at":"2025-05-27T22:38:12.000Z","date":"2025-05-23","kind":"other","planned":false,"acquired":false,"shares":510073,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Atomico Advisors IV, Ltd. is the general partner of Atomico IV L.P. (\"Atomico IV\") and Atomico IV (Guernsey), L.P. (\"Atomico IV (Guernsey)\"). As a result, Atomico Advisors IV, Ltd. may be deemed to have beneficial ownership of the shares held by each of Atomico IV and Atomico IV (Guernsey)."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Following the transactions reported in this Form 4, the Reporting Persons beneficially own (i) 5,476,823 shares of Class B Common Stock held by Atomico IV and (ii) 1,236,240 shares of Class B Common Stock held by Atomico IV (Guernsey)."}],"balance_after":0,"derivative":{"underlying":"Class B Common Stock","underlying_shares":510073},"source":{"system":"sec-edgar","filing":"0000950170-25-077936","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1673743/000095017025077936/ownership.xml","form_type":"4"}},{"id":1133422,"issuer":{"id":377,"kind":"organization","name":"Hinge Health, Inc.","symbol":"HNGE"},"owners":[{"id":79221,"kind":"organization","name":"Atomico Advisors IV, Ltd.","position":1,"cik":"0002069654","reported_name":"Atomico Advisors IV, Ltd.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":79222,"kind":"organization","name":"Atomico IV, L.P.","position":2,"cik":"0001652865","reported_name":"Atomico IV, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":79223,"kind":"organization","name":"Atomico IV (Guernsey), L.P.","position":3,"cik":"0002067737","reported_name":"Atomico IV (Guernsey), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series C-1 Preferred Stock","published_at":"2025-05-27T22:38:12.000Z","date":"2025-05-23","kind":"other","planned":false,"acquired":false,"shares":602298,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Atomico Advisors IV, Ltd. is the general partner of Atomico IV L.P. (\"Atomico IV\") and Atomico IV (Guernsey), L.P. (\"Atomico IV (Guernsey)\"). As a result, Atomico Advisors IV, Ltd. may be deemed to have beneficial ownership of the shares held by each of Atomico IV and Atomico IV (Guernsey)."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Following the transactions reported in this Form 4, the Reporting Persons beneficially own (i) 5,476,823 shares of Class B Common Stock held by Atomico IV and (ii) 1,236,240 shares of Class B Common Stock held by Atomico IV (Guernsey)."}],"balance_after":0,"derivative":{"underlying":"Class B Common Stock","underlying_shares":602298},"source":{"system":"sec-edgar","filing":"0000950170-25-077936","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1673743/000095017025077936/ownership.xml","form_type":"4"}},{"id":1133421,"issuer":{"id":377,"kind":"organization","name":"Hinge Health, Inc.","symbol":"HNGE"},"owners":[{"id":79221,"kind":"organization","name":"Atomico Advisors IV, Ltd.","position":1,"cik":"0002069654","reported_name":"Atomico Advisors IV, Ltd.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":79222,"kind":"organization","name":"Atomico IV, L.P.","position":2,"cik":"0001652865","reported_name":"Atomico IV, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":79223,"kind":"organization","name":"Atomico IV (Guernsey), L.P.","position":3,"cik":"0002067737","reported_name":"Atomico IV (Guernsey), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series C Preferred Stock","published_at":"2025-05-27T22:38:12.000Z","date":"2025-05-23","kind":"other","planned":false,"acquired":false,"shares":1175333,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Atomico Advisors IV, Ltd. is the general partner of Atomico IV L.P. (\"Atomico IV\") and Atomico IV (Guernsey), L.P. (\"Atomico IV (Guernsey)\"). As a result, Atomico Advisors IV, Ltd. may be deemed to have beneficial ownership of the shares held by each of Atomico IV and Atomico IV (Guernsey)."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Following the transactions reported in this Form 4, the Reporting Persons beneficially own (i) 5,476,823 shares of Class B Common Stock held by Atomico IV and (ii) 1,236,240 shares of Class B Common Stock held by Atomico IV (Guernsey)."}],"balance_after":0,"derivative":{"underlying":"Class B Common Stock","underlying_shares":1175333},"source":{"system":"sec-edgar","filing":"0000950170-25-077936","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1673743/000095017025077936/ownership.xml","form_type":"4"}},{"id":1133420,"issuer":{"id":377,"kind":"organization","name":"Hinge Health, Inc.","symbol":"HNGE"},"owners":[{"id":79221,"kind":"organization","name":"Atomico Advisors IV, Ltd.","position":1,"cik":"0002069654","reported_name":"Atomico Advisors IV, Ltd.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":79222,"kind":"organization","name":"Atomico IV, L.P.","position":2,"cik":"0001652865","reported_name":"Atomico IV, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":79223,"kind":"organization","name":"Atomico IV (Guernsey), L.P.","position":3,"cik":"0002067737","reported_name":"Atomico IV (Guernsey), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series B Preferred Stock","published_at":"2025-05-27T22:38:12.000Z","date":"2025-05-23","kind":"other","planned":false,"acquired":false,"shares":2245545,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Atomico Advisors IV, Ltd. is the general partner of Atomico IV L.P. (\"Atomico IV\") and Atomico IV (Guernsey), L.P. (\"Atomico IV (Guernsey)\"). As a result, Atomico Advisors IV, Ltd. may be deemed to have beneficial ownership of the shares held by each of Atomico IV and Atomico IV (Guernsey)."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Following the transactions reported in this Form 4, the Reporting Persons beneficially own (i) 5,476,823 shares of Class B Common Stock held by Atomico IV and (ii) 1,236,240 shares of Class B Common Stock held by Atomico IV (Guernsey)."}],"balance_after":0,"derivative":{"underlying":"Class B Common Stock","underlying_shares":2245545},"source":{"system":"sec-edgar","filing":"0000950170-25-077936","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1673743/000095017025077936/ownership.xml","form_type":"4"}},{"id":1133419,"issuer":{"id":377,"kind":"organization","name":"Hinge Health, Inc.","symbol":"HNGE"},"owners":[{"id":79221,"kind":"organization","name":"Atomico Advisors IV, Ltd.","position":1,"cik":"0002069654","reported_name":"Atomico Advisors IV, Ltd.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":79222,"kind":"organization","name":"Atomico IV, L.P.","position":2,"cik":"0001652865","reported_name":"Atomico IV, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":79223,"kind":"organization","name":"Atomico IV (Guernsey), L.P.","position":3,"cik":"0002067737","reported_name":"Atomico IV (Guernsey), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series A-2 Preferred Stock","published_at":"2025-05-27T22:38:12.000Z","date":"2025-05-23","kind":"other","planned":false,"acquired":false,"shares":4830917,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Atomico Advisors IV, Ltd. is the general partner of Atomico IV L.P. (\"Atomico IV\") and Atomico IV (Guernsey), L.P. (\"Atomico IV (Guernsey)\"). As a result, Atomico Advisors IV, Ltd. may be deemed to have beneficial ownership of the shares held by each of Atomico IV and Atomico IV (Guernsey)."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Following the transactions reported in this Form 4, the Reporting Persons beneficially own (i) 5,476,823 shares of Class B Common Stock held by Atomico IV and (ii) 1,236,240 shares of Class B Common Stock held by Atomico IV (Guernsey)."}],"balance_after":0,"derivative":{"underlying":"Class B Common Stock","underlying_shares":4830917},"source":{"system":"sec-edgar","filing":"0000950170-25-077936","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1673743/000095017025077936/ownership.xml","form_type":"4"}},{"id":1133418,"issuer":{"id":377,"kind":"organization","name":"Hinge Health, Inc.","symbol":"HNGE"},"owners":[{"id":79221,"kind":"organization","name":"Atomico Advisors IV, Ltd.","position":1,"cik":"0002069654","reported_name":"Atomico Advisors IV, Ltd.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":79222,"kind":"organization","name":"Atomico IV, L.P.","position":2,"cik":"0001652865","reported_name":"Atomico IV, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":79223,"kind":"organization","name":"Atomico IV (Guernsey), L.P.","position":3,"cik":"0002067737","reported_name":"Atomico IV (Guernsey), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2025-05-27T22:38:12.000Z","date":"2025-05-23","kind":"sale","planned":false,"acquired":false,"shares":2651103,"price":32,"value":84835296.0,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Atomico Advisors IV, Ltd. is the general partner of Atomico IV L.P. (\"Atomico IV\") and Atomico IV (Guernsey), L.P. (\"Atomico IV (Guernsey)\"). As a result, Atomico Advisors IV, Ltd. may be deemed to have beneficial ownership of the shares held by each of Atomico IV and Atomico IV (Guernsey)."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Following the transactions reported in this Form 4, the Reporting Persons beneficially own (i) 5,476,823 shares of Class B Common Stock held by Atomico IV and (ii) 1,236,240 shares of Class B Common Stock held by Atomico IV (Guernsey)."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000950170-25-077936","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1673743/000095017025077936/ownership.xml","form_type":"4"}},{"id":1133417,"issuer":{"id":377,"kind":"organization","name":"Hinge Health, Inc.","symbol":"HNGE"},"owners":[{"id":79221,"kind":"organization","name":"Atomico Advisors IV, Ltd.","position":1,"cik":"0002069654","reported_name":"Atomico Advisors IV, Ltd.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":79222,"kind":"organization","name":"Atomico IV, L.P.","position":2,"cik":"0001652865","reported_name":"Atomico IV, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":79223,"kind":"organization","name":"Atomico IV (Guernsey), L.P.","position":3,"cik":"0002067737","reported_name":"Atomico IV (Guernsey), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2025-05-27T22:38:12.000Z","date":"2025-05-23","kind":"exercise","planned":false,"acquired":true,"shares":2651103,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock of the Issuer, except for the Series E Preferred Stock, automatically converted and was reclassified into one share of Class B Common Stock. Each share of Class B Common Stock will be convertible at any time at the option of the holder into one share of Class A Common Stock. The Class B Common Stock will automatically convert into shares of Class A Common Stock upon the occurrence of certain events as described further in the Issuer's amended and restated certificate of incorporation."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Atomico Advisors IV, Ltd. is the general partner of Atomico IV L.P. (\"Atomico IV\") and Atomico IV (Guernsey), L.P. (\"Atomico IV (Guernsey)\"). As a result, Atomico Advisors IV, Ltd. may be deemed to have beneficial ownership of the shares held by each of Atomico IV and Atomico IV (Guernsey)."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Following the transactions reported in this Form 4, the Reporting Persons beneficially own (i) 5,476,823 shares of Class B Common Stock held by Atomico IV and (ii) 1,236,240 shares of Class B Common Stock held by Atomico IV (Guernsey)."}],"balance_after":2651103,"source":{"system":"sec-edgar","filing":"0000950170-25-077936","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1673743/000095017025077936/ownership.xml","form_type":"4"}}]}