v3.26.3
Cover Page
Sep. 29, 2026
Document Information [Line Items]  
Entity Registrant Name Gentherm Inc
Amendment Flag true
Entity Central Index Key 0000903129
Document Type 8-K/A
Document Period End Date Sep. 29, 2026
Entity Incorporation State Country Code MI
Entity File Number 0-21810
Entity Tax Identification Number 95-4318554
Entity Address, Address Line One 28875 Cabot Drive
Entity Address, City or Town Novi
Entity Address, State or Province MI
Entity Address, Postal Zip Code 48377
City Area Code (248)
Local Phone Number 348-9735
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common Stock, no par value
Trading Symbol THRM
Security Exchange Name NASDAQ
Entity Emerging Growth Company false
Amendment Description This Amendment No. 1 on Form 8-K/A (this “Form 8-K/A”) is being filed to amend Item 9.01(b) of the Current Report on Form 8-K filed by Gentherm on October 1, 2026 to include the unaudited pro forma condensed combined financial information required by Item 9.01(b) of Form 8-K, which will be incorporated by reference into the registration statement on Form S-4 (Reg. No. 333-297224) initially filed by Gentherm (the “Registration Statement”) on July 2, 2026.