SEALSQ declared that it has signed a non-binding Memorandum of Understanding that will allow it to negotiate exclusively with Quobly SAS shareholders in order to make an initial minority investment and possibly purchase a majority stake in QUOBLY.

The completion of financial, legal, technical, and commercial due diligence, the negotiation and execution of definitive agreements, the acquisition of necessary corporate and regulatory approvals, and the fulfillment of other customary closing conditions are all still prerequisites for the proposed transaction.
The execution of a non-binding Memorandum of Understanding that considers a multi-stage transaction leads to these exclusive negotiations.
This deal is based on SEALSQ’s Quantum strategy and is partially funded by its specialized Quantum Fund, which aims to hasten the development of industrial-scale, secure, and sovereign quantum technologies throughout Europe. If the deal goes through, SEALSQ would invest a total of about $200 million in exchange for a majority share in QUOBLY.
These exclusive negotiations result from the execution of a non-binding Memorandum of Understanding that contemplates a multi-stage transaction.
This transaction is anchored within SEALSQ’s Quantum strategy and supported in part by its dedicated Quantum Fund designed to accelerate the emergence of sovereign, secure, and industrial-scale quantum technologies across Europe. If completed, the transaction would result in a total investment of approximately $200M by SEALSQ in return for a majority stake in QUOBLY.
Following the announcement on November 21, 2025, of SEALSQ and QUOBLY’s continued strategic partnership, exclusive talks with QUOBLY have begun. The planned expansion of the partnership aims to accelerate benefits, such as joint leadership in reliable and industrialized quantum computers and improve market penetration in the US and the EU.
In order to specify how quantum-resistant security can be directly integrated into upcoming quantum infrastructures supporting defense, intelligence, financial services, pharmaceuticals, and other mission-critical industries, SEALSQ and QUOBLY want to provide a reference platform for secure-by-design quantum computing.
Leadership Comments
Maud Vinet, Co-Founder and Chief Executive Officer of QUOBLY, commented: “This proposed transaction by SEALSQ marks an important step in QUOBLY’s industrial journey. Joining forces with a global leader in post-quantum security and semiconductor expert
accelerates our ability to bring secure, scalable silicon-based quantum processors to market, and to expand internationally while consolidating our technological roadmap.”
Carlos Moreira, Founder and Chief Executive Officer of SEALSQ, stated: “The proposed acquisition of QUOBLY is fully aligned with our Quantum roadmap. As quantum computing becomes a strategic infrastructure, security must be embedded at the hardware level from day one. QUOBLY’s CMOS-compatible quantum technology, combined with SEALSQ’s post-quantum Root-of-Trust capabilities, creates a unique platform to build sovereign, trusted, and industrialized quantum systems for Europe, and their strategic partners.”
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