Quantum-Si Inc

Quantum-Si Incorporated (Nasdaq: QSI) is a life sciences technology company that completed its business combination with HighCape Capital Acquisition Corp, a blank-check vehicle sponsored by HighCape Capital, in 2021 following the SPAC's IPO in 2020. The company develops semiconductor chip-based platforms for next-generation protein sequencing, with applications in proteomics research, drug discovery, and diagnostics. On May 7, 2026, Quantum-Si filed an 8-K with the Securities and Exchange Commission, continuing its public reporting obligations as a de-SPAC issuer operating in the life sciences tools and services sector. Sign up at SpacDesk for comprehensive filing histories, SPAC deal analytics, and real-time data coverage on Quantum-Si and the broader de-SPAC universe.