Horizon Quantum details lock-ups after $120M SPAC merger
What's the deal? Horizon Quantum Computing has clarified its share structure and lock-up terms following its March 2026 merger with dMY Squared Technology GroupDealroom has a profile for this one. Try Dealroom →. As of September 14, 2026, it reports 34,811,740 Class A and 19,744,585 Class B ordinary shares outstanding.
Why now? The company moved to detail the restrictions after a period of market uncertainty, aiming to reassure investors about limits on share sales.
The terms: Most shareholders are locked up until March 19, 2028 — 24 months after the merger closed. One shareholder gets an earlier release on September 19, 2027, or 18 months after closing. All agreements remain in effect, the company says.
What each side does: Founded in 2018 and now listed on Nasdaq, Horizon Quantum builds software that translates classical code into quantum circuits and runs its own quantum hardware. dMY Squared Technology GroupDealroom has a profile for this one. Try Dealroom → was the special purpose acquisition company (SPAC) that took it public.
The merger brought roughly $120 million in gross proceeds, plus a private investment in public equity (PIPE) that included backing from IonQ. Horizon Quantum is also working with Alpine Quantum TechnologiesDealroom has a profile for this one. Try Dealroom → to integrate its software with AQT's trapped-ion systems, a partnership announced earlier in 2026.
The signal: Horizon Quantum bills itself as the first publicly traded company focused solely on quantum software. Its 24-month lock-up follows standard SPAC practice, offering a buffer against early selling as investors weigh a young, capital-hungry sector.
Read more: quantumzeitgeist.com
Image credit: IBM Research
