GigCapital8 signs merger agreement with quantum platform Quantisimo
On October 8, 2026, GigCapital8 Corp. entered into a merger agreement with Quantisimo Corp., WISeQey and SEALSQ, under which GigCapital8 and Quantisimo would become wholly owned subsidiaries of a newly formed holding company, Quantisimo Holding Corp., expected to list on Nasdaq under the symbol QSMO. The deal is subject to GigCapital8 shareholder approval, a minimum cash condition of $15 million, and an expected completion in the first quarter of 2027, so shareholders will be asked to vote on the transaction.
Key points
- Merger Agreement dated October 8, 2026; joint press release issued October 9, 2026.
- Quantisimo's owners would receive 66,610,000 PubCo shares, an implied pro forma equity value of approximately $666.1 million at $10.00 per share.
- Closing is conditioned on available cash of at least $15 million; the outside date is March 31, 2027.
- GigCapital8's sponsor agreed to vote in favor of the transaction and not to redeem its shares; WISeQey, SEALSQ and the sponsor agreed to six-month lock-ups.
The filing
Written by AI on Nov 9, 2026, 11:48 AM ET, from this filing only. Written later: this filing was briefed after the fact, when past filings were added to the site, so the brief may be read with hindsight; the filing itself is the record of what was known on October 09, 2026.
Briefs are written by AI from the filing text and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the AI's reading of the filing for shareholders, not a price forecast. Not investment advice.