v3.26.3
Document And Entity Information
6 Months Ended
Jun. 30, 2026
Document Information Line Items  
Entity Central Index Key 0001951222
Document Type 6-K
Document Fiscal Year Focus 2026
Entity File Number 001-41709
Entity Registrant Name SEALSQ CORP
Amendment Flag false
Document Period End Date Jun. 30, 2026
Document Fiscal Period Focus Q2
Current Fiscal Year End Date --12-31