0001104659-26-037706 Sample Contracts

Certain identified information has been excluded from the exhibit because it is both (i) not material and (ii) is the type of information the issuer both customarily and actually treats as private and confidential. SECURITIES PURCHASE AGREEMENT
Securities Purchase Agreement • March 31st, 2026 • SEALSQ Corp • Semiconductors & related devices • New York

This Securities Purchase Agreement (this “Agreement”) is dated as of May 5, 2025, between SEALSQ Corp., a British Virgin Islands company (the “Company”), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, a “Purchaser” and collectively the “Purchasers”).

MASTER SUPPLY AGREEMENT
Master Supply Agreement • March 31st, 2026 • SEALSQ Corp • Semiconductors & related devices

This Master Supply Agreement (this “Agreement”) is made retroactively effective as of July 1st, 2025 (the “Effective Date”), by and between

First Amendment to the Master Supply Agreement
Master Supply Agreement • March 31st, 2026 • SEALSQ Corp • Semiconductors & related devices

This first amendment to the Master Supply Agreement (the “Amendment”) is entered into as of the date of execution by both Parties hereto.

NOVATION AGREEMENT
Novation Agreement • March 31st, 2026 • SEALSQ Corp • Semiconductors & related devices