Quantumsphere Acquisition Corp

Quantumsphere Acquisition Corp, whose rights trade on Nasdaq under the ticker QUMSR, is a blank-check company formed for the purpose of identifying and completing a business combination with an operating target. The company submitted an 8-K report to the Securities and Exchange Commission on October 6, 2025, representing its most recent public disclosure as the SPAC advances through its deal timeline. Sponsor identity, IPO year, and sector focus are among the data points SpacDesk tracks as part of its comprehensive SPAC coverage — sign up at SpacDesk for full filing history, sponsor profiles, and real-time monitoring across the entire SPAC market.