QuantumSi(QSI) - 2025 Q2 - Quarterly Results

Exhibit 99.1 Quantum-Si Reports Second Quarter 2025 Financial Results Announced On-Track Proteus Development Program Completes Capital Raise of $50 Million TM BRANFORD, Conn. -- (BUSINESS WIRE) -- August 5, 2025 -- Quantum-Si Incorporated (Nasdaq: QSI) ("Quantum- Si," "QSI" or the "Company"), a proteomics technology company redefining protein analysis through single-molecule detection, today announced financial results for the second quarter ended June 30, 2025. Press Release Highlights "We completed anothe ...