Quantum-Si Inc SEC filings

Filings

1. 8-KQuantum-Si IncQSIAW3d

   Quantum-Si Inc regains Nasdaq compliance

   • Received notice on July 23, 2026, for bid price below $1.00
   • Regained compliance as of October 13, 2026
   • 180-day period to maintain compliance
2. 8-KQuantum-Si IncQSIAWOct 8

   Quantum-Si Inc demonstrates 19 amino acids

   • Demonstrated detection of 19 amino acids in Proteus program
   • Aims to detect all 20 amino acids by end-2026
   • Proteus sequencing performance improved at 2026 World HUPO Congress
3. 8-KQuantum-Si IncQSIAWSep 29

   Current report

4. 4Quantum-Si IncQSIAWSep 23

   3 insider filings

   Jeffrey Alan Hawkins, insider filing for QSIAW

   Show all 3

   • 4Insider filing for QSIAWSep 23
   • 4Insider filing for QSIAWSep 23
   • 4Insider filing for QSIAWSep 23

   Jeffrey Alan Hawkins, reporting

5. 144Quantum-Si IncQSIAWSep 23

   3 Form 144 notices

   Jeffrey Alan Hawkins, planned sale of QSIAW shares

   Show all 3

   • 144Planned insider sale of QSIAW sharesSep 23
   • 144Planned insider sale of QSIAW sharesSep 23
   • 144Planned insider sale of QSIAW sharesSep 23

   Jeffrey Alan Hawkins, reporting

6. SCHEDULE 13D/AQuantum-Si IncQSIAWAug 28

   Ownership stake disclosure by Jonathan M Rothberg (amended)

   Jonathan M Rothberg, filed by

7. 10-QQuantum-Si IncQSIAWAug 13

   Quarterly report

8. 8-KQuantum-Si IncQSIAWAug 13

   Current report

9. SCHEDULE 13G/AQuantum-Si IncQSIAWJul 29

   Ownership stake disclosure by BlackRock, Inc. (amended)

   BlackRock, Inc., filed by

10. 8-KQuantum-Si IncQSIAWJul 24

    Current report

11. 4Quantum-Si IncQSIAWJun 24

    4 insider filings

    Christian LaPointe, insider filing for QSIAW

    Show all 4

    • 4Insider filing for QSIAWJun 24
    • 4Insider filing for QSIAWJun 24
    • 4Insider filing for QSIAWJun 24
    • 4Insider filing for QSIAWJun 24

    Christian LaPointe, reporting

12. 144Quantum-Si IncQSIAWJun 24

    4 Form 144 notices

    Christian LaPointe, planned sale of QSIAW shares

    Show all 4

    • 144Planned insider sale of QSIAW sharesJun 24
    • 144Planned insider sale of QSIAW sharesJun 24
    • 144Planned insider sale of QSIAW sharesJun 24
    • 144Planned insider sale of QSIAW sharesJun 24

    Christian LaPointe, reporting

13. 8-KQuantum-Si IncQSIAWJun 24

    Current report

14. 25-NSEQuantum-Si IncQSIAWJun 10

    Delisting notice

    Nasdaq Stock Market LLC, filed by

15. SDQuantum-Si IncQSIAWMay 22

    Conflict minerals report

16. 4Quantum-Si IncQSIAWMay 20

    9 insider filings

    Jonathan M Rothberg, insider filing for QSIAW

    Show all 9

    • 4Insider filing for QSIAWMay 20
    • 4Insider filing for QSIAWMay 20
    • 4Insider filing for QSIAWMay 20
    • 4Insider filing for QSIAWMay 20
    • 4Insider filing for QSIAWMay 20
    • 4Insider filing for QSIAWMay 20
    • 4Insider filing for QSIAWMay 20
    • 4Insider filing for QSIAWMay 20
    • 4Insider filing for QSIAWMay 20

    Jonathan M Rothberg, reporting

17. 8-KQuantum-Si IncQSIAWMay 15

    Current report

18. 10-QQuantum-Si IncQSIAWMay 7

    Quarterly report

19. 8-KQuantum-Si IncQSIAWMay 7

    Current report

20. 4Quantum-Si IncQSIAWApr 22

    2 insider filings

    Jeffry R. Keyes, insider filing for QSIAW

    Show all 2

    • 4Insider filing for QSIAWApr 22
    • 4Insider filing for QSIAWApr 22

    Jeffry R. Keyes, reporting

21. 144Quantum-Si IncQSIAWApr 22

    2 Form 144 notices

    Jeffry R. Keyes, planned sale of QSIAW shares

    Show all 2

    • 144Planned insider sale of QSIAW sharesApr 22
    • 144Planned insider sale of QSIAW sharesApr 22

    Jeffry R. Keyes, reporting

22. ARSQuantum-Si IncQSIAWApr 1

    Annual report to shareholders

23. DEFA14AQuantum-Si IncQSIAWApr 1

    Additional proxy materials

24. DEF 14AQuantum-Si IncQSIAWApr 1

    Proxy statement

25. 4Quantum-Si IncQSIAWMar 24

    4 insider filings

    Jeffry R. Keyes, insider filing for QSIAW

    Show all 4

    • 4Insider filing for QSIAWMar 24
    • 4Insider filing for QSIAWMar 24
    • 4Insider filing for QSIAWMar 24
    • 4Insider filing for QSIAWMar 24

    Jeffry R. Keyes, reporting

26. 144Quantum-Si IncQSIAWMar 24

    2 Form 144 notices

    John S. Vieceli, planned sale of QSIAW shares

    Show all 2

    • 144Planned insider sale of QSIAW sharesMar 24
    • 144Planned insider sale of QSIAW sharesMar 24

    John S. Vieceli, reporting

Older filings on EDGAR