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The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide, upon request, to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":1356646,"source":{"system":"sec-edgar","filing":"0001193125-26-091468","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1794546/000119312526091468/ownership.xml","form_type":"4"}},{"id":860473,"issuer":{"id":5551,"kind":"organization","name":"CARLSMED, INC.","symbol":"CARL"},"owners":[{"id":62744,"kind":"person","name":"Cordonnier Michael","position":1,"cik":"0002077087","reported_name":"Cordonnier Michael","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO, President"}}],"security":"Common Stock","published_at":"2026-03-04T21:05:03.000Z","date":"2026-03-02","kind":"exercise","planned":false,"acquired":true,"shares":197855,"price":0.335,"value":66281.425,"ownership":{"direct":true},"balance_after":1554501,"source":{"system":"sec-edgar","filing":"0001193125-26-091468","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1794546/000119312526091468/ownership.xml","form_type":"4"}},{"id":926670,"issuer":{"id":5551,"kind":"organization","name":"CARLSMED, INC.","symbol":"CARL"},"owners":[{"id":62744,"kind":"person","name":"Cordonnier Michael","position":1,"cik":"0002077087","reported_name":"Cordonnier Michael","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO, President"}}],"security":"Common Stock","published_at":"2026-01-30T22:22:02.000Z","date":"2026-01-28","kind":"grant","planned":false,"acquired":true,"shares":117316,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one (1) share of the Issuer's Common Stock. The RSUs will vest in three equal annual installments beginning on the first anniversary of the grant date."}],"balance_after":1356646,"source":{"system":"sec-edgar","filing":"0001193125-26-032071","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1794546/000119312526032071/ownership.xml","form_type":"4"}},{"id":1081818,"issuer":{"id":5551,"kind":"organization","name":"CARLSMED, INC.","symbol":"CARL"},"owners":[{"id":62744,"kind":"person","name":"Cordonnier Michael","position":1,"cik":"0002077087","reported_name":"Cordonnier Michael","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO, President"}}],"security":"Series B Preferred Stock","published_at":"2025-07-25T00:33:12.000Z","date":"2025-07-24","kind":"exercise","planned":false,"acquired":false,"shares":3612,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"These securities were previously reported on a Form 3 filed by the Reporting Person as preferred stock of the Issuer. Each share of preferred stock of the Issuer converted into one share of the Issuer's common stock immediately prior to the closing of the Issuer's initial public offering on a 1-to-1 basis without payment of additional consideration. The preferred stock has no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"These securities were previously reported on a Form 3 filed by the Reporting Person as preferred stock of the Issuer. Each share of preferred stock of the Issuer converted into one share of the Issuer's common stock immediately prior to the closing of the Issuer's initial public offering on a 1-to-1 basis without payment of additional consideration. The preferred stock has no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"These securities were previously reported on a Form 3 filed by the Reporting Person as preferred stock of the Issuer. Each share of preferred stock of the Issuer converted into one share of the Issuer's common stock immediately prior to the closing of the Issuer's initial public offering on a 1-to-1 basis without payment of additional consideration. The preferred stock has no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"These securities were previously reported on a Form 3 filed by the Reporting Person as preferred stock of the Issuer. Each share of preferred stock of the Issuer converted into one share of the Issuer's common stock immediately prior to the closing of the Issuer's initial public offering on a 1-to-1 basis without payment of additional consideration. 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