| **Document and Entity Information** | Jun. 03, 2026 | | --- | --- | | **Cover [Abstract]** | | | Amendment Flag | false | | Entity Central Index Key | 0001794546 | | Document Type | 8-K | | Document Period End Date | Jun. 03, 2026 | | Entity Registrant Name | Carlsmed, Inc. | | Entity Incorporation State Country Code | DE | | Entity File Number | 001-42756 | | Entity Tax Identification Number | 83-1081863 | | Entity Address, Address Line One | 1800 Aston Ave, Suite 100 | | Entity Address, City or Town | Carlsbad | | Entity Address, State or Province | CA | | Entity Address, Postal Zip Code | 92008 | | City Area Code | (760) | | Local Phone Number | 766-1923 | | Written Communications | false | | Soliciting Material | false | | Pre Commencement Tender Offer | false | | Pre Commencement Issuer Tender Offer | false | | Title of 12(b) Security | Common Stock, $0.00001 par value per share | | Trading Symbol | CARL | | Security Exchange Name | NASDAQ | | Entity Emerging Growth Company | true | | Entity Ex Transition Period | true | | X | | - Definition Boolean flag that is true when the XBRL content amends previously-filed or accepted submission. \+ References No definition available. \+ Details | | | | --- | --- | | **Name:** | dei_AmendmentFlag | | **Namespace Prefix:** | dei_ | | **Data Type:** | xbrli:booleanItemType | | **Balance Type:** | na | | **Period Type:** | duration | | | X | | - Definition Area code of city \+ References No definition available. \+ Details | | | | --- | --- | | **Name:** | dei_CityAreaCode | | **Namespace Prefix:** | dei_ | | **Data Type:** | xbrli:normalizedStringItemType | | **Balance Type:** | na | | **Period Type:** | duration | | | X | | - Definition Cover page. \+ References No definition available. \+ Details | | | | --- | --- | | **Name:** | dei_CoverAbstract | | **Namespace Prefix:** | dei_ | | **Data Type:** | xbrli:stringItemType | | **Balance Type:** | na | | **Period Type:** | duration | | | X | | - Definition For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD. \+ References No definition available. \+ Details | | | | --- | --- | | **Name:** | dei_DocumentPeriodEndDate | | **Namespace Prefix:** | dei_ | | **Data Type:** | xbrli:dateItemType | | **Balance Type:** | na | | **Period Type:** | duration | | | X | | - Definition The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'. \+ References No definition available. \+ Details | | | | --- | --- | | **Name:** | dei_DocumentType | | **Namespace Prefix:** | dei_ | | **Data Type:** | dei:submissionTypeItemType | | **Balance Type:** | na | | **Period Type:** | duration | | | X | | - Definition Address Line 1 such as Attn, Building Name, Street Name \+ References No definition available. \+ Details | | | | --- | --- | | **Name:** | dei_EntityAddressAddressLine1 | | **Namespace Prefix:** | dei_ | | **Data Type:** | xbrli:normalizedStringItemType | | **Balance Type:** | na | | **Period Type:** | duration | | | X | | - Definition Name of the City or Town \+ References No definition available. \+ Details | | | | --- | --- | | **Name:** | dei_EntityAddressCityOrTown | | **Namespace Prefix:** | dei_ | | **Data Type:** | xbrli:normalizedStringItemType | | **Balance Type:** | na | | **Period Type:** | duration | | | X | | - Definition Code for the postal or zip code \+ References No definition available. \+ Details | | | | --- | --- | | **Name:** | dei_EntityAddressPostalZipCode | | **Namespace Prefix:** | dei_ | | **Data Type:** | xbrli:normalizedStringItemType | | **Balance Type:** | na | | **Period Type:** | duration | | | X | | - Definition Name of the state or province. \+ References No definition available. \+ Details | | | | --- | --- | | **Name:** | dei_EntityAddressStateOrProvince | | **Namespace Prefix:** | dei_ | | **Data Type:** | dei:stateOrProvinceItemType | | **Balance Type:** | na | | **Period Type:** | duration | | | X | | - Definition A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK. \+ References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Exchange Act -Number 240 -Section 12 -Subsection b-2 \+ Details | | | | --- | --- | | **Name:** | dei_EntityCentralIndexKey | | **Namespace Prefix:** | dei_ | | **Data Type:** | dei:centralIndexKeyItemType | | **Balance Type:** | na | | **Period Type:** | duration | | | X | | - Definition Indicate if registrant meets the emerging growth company criteria. \+ References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Exchange Act -Number 240 -Section 12 -Subsection b-2 \+ Details | | | | --- | --- | | **Name:** | dei_EntityEmergingGrowthCompany | | **Namespace Prefix:** | dei_ | | **Data Type:** | xbrli:booleanItemType | | **Balance Type:** | na | | **Period Type:** | duration | | | X | | - Definition Indicate if an emerging growth company has elected not to use the extended transition period for complying with any new or revised financial accounting standards. \+ References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Securities Act -Number 7A -Section B -Subsection 2 \+ Details | | | | --- | --- | | **Name:** | dei_EntityExTransitionPeriod | | **Namespace Prefix:** | dei_ | | **Data Type:** | xbrli:booleanItemType | | **Balance Type:** | na | | **Period Type:** | duration | | | X | | - Definition Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen. \+ References No definition available. \+ Details | | | | --- | --- | | **Name:** | dei_EntityFileNumber | | **Namespace Prefix:** | dei_ | | **Data Type:** | dei:fileNumberItemType | | **Balance Type:** | na | | **Period Type:** | duration | | | X | | - Definition Two-character EDGAR code representing the state or country of incorporation. \+ References No definition available. \+ Details | | | | --- | --- | | **Name:** | dei_EntityIncorporationStateCountryCode | | **Namespace Prefix:** | dei_ | | **Data Type:** | dei:edgarStateCountryItemType | | **Balance Type:** | na | | **Period Type:** | duration | | | X | | - Definition The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC. \+ References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Exchange Act -Number 240 -Section 12 -Subsection b-2 \+ Details | | | | --- | --- | | **Name:** | dei_EntityRegistrantName | | **Namespace Prefix:** | dei_ | | **Data Type:** | xbrli:normalizedStringItemType | | **Balance Type:** | na | | **Period Type:** | duration | | | X | | - Definition The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS. \+ References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Exchange Act -Number 240 -Section 12 -Subsection b-2 \+ Details | | | | --- | --- | | **Name:** | dei_EntityTaxIdentificationNumber | | **Namespace Prefix:** | dei_ | | **Data Type:** | dei:employerIdItemType | | **Balance Type:** | na | | **Period Type:** | duration | | | X | | - Definition Local phone number for entity. \+ References No definition available. \+ Details | | | | --- | --- | | **Name:** | dei_LocalPhoneNumber | | **Namespace Prefix:** | dei_ | | **Data Type:** | xbrli:normalizedStringItemType | | **Balance Type:** | na | | **Period Type:** | duration | | | X | | - Definition Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act. \+ References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Exchange Act -Number 240 -Section 13e -Subsection 4c \+ Details | | | | --- | --- | | **Name:** | dei_PreCommencementIssuerTenderOffer | | **Namespace Prefix:** | dei_ | | **Data Type:** | xbrli:booleanItemType | | **Balance Type:** | na | | **Period Type:** | duration | | | X | | - Definition Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act. \+ References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Exchange Act -Number 240 -Section 14d -Subsection 2b \+ Details | | | | --- | --- | | **Name:** | dei_PreCommencementTenderOffer | | **Namespace Prefix:** | dei_ | | **Data Type:** | xbrli:booleanItemType | | **Balance Type:** | na | | **Period Type:** | duration | | | X | | - Definition Title of a 12(b) registered security. \+ References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Exchange Act -Number 240 -Section 12 -Subsection b \+ Details | | | | --- | --- | | **Name:** | dei_Security12bTitle | | **Namespace Prefix:** | dei_ | | **Data Type:** | dei:securityTitleItemType | | **Balance Type:** | na | | **Period Type:** | duration | | | X | | - Definition Name of the Exchange on which a security is registered. \+ References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Exchange Act -Number 240 -Section 12 -Subsection d1-1 \+ Details | | | | --- | --- | | **Name:** | dei_SecurityExchangeName | | **Namespace Prefix:** | dei_ | | **Data Type:** | dei:edgarExchangeCodeItemType | | **Balance Type:** | na | | **Period Type:** | duration | | | X | | - Definition Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act. \+ References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Exchange Act -Number 240 -Section 14a -Subsection 12 \+ Details | | | | --- | --- | | **Name:** | dei_SolicitingMaterial | | **Namespace Prefix:** | dei_ | | **Data Type:** | xbrli:booleanItemType | | **Balance Type:** | na | | **Period Type:** | duration | | | X | | - Definition Trading symbol of an instrument as listed on an exchange. \+ References No definition available. \+ Details | | | | --- | --- | | **Name:** | dei_TradingSymbol | | **Namespace Prefix:** | dei_ | | **Data Type:** | dei:tradingSymbolItemType | | **Balance Type:** | na | | **Period Type:** | duration | | | X | | - Definition Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act. \+ References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Securities Act -Number 230 -Section 425 \+ Details | | | | --- | --- | | **Name:** | dei_WrittenCommunications | | **Namespace Prefix:** | dei_ | | **Data Type:** | xbrli:booleanItemType | | **Balance Type:** | na | | **Period Type:** | duration | |