JONATHAN M. ROTHBERG - 27 Dec 2024 SCHEDULE 13D/A Report for Quantum-Si Inc Class A common stock, par value $0.0001 per share, Class B common stock, par value $0.0001 per share (QSI)

Filing Manager: JONATHAN M. ROTHBERG
Reporting Manager: ROTHBERG JONATHAN M
Security: Quantum-Si Inc Class A common stock, par value $0.0001 per share, Class B common stock, par value $0.0001 per share
Symbol: QSI
Shares outstanding: 19,937,500 shares
Disclosed Ownership: 19,937,500 shares
Ownership: 100%
Form type: SCHEDULE 13D/A
Filing time: 31 Dec 2024, 20:30:05 UTC
Date of event: 27 Dec 2024
Next filing: 11 Sep 2025
SEC: View on sec.gov

Reporting Managers (6)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
ROTHBERG JONATHAN M	11.5%	14,163,134	11,972,645	2,190,489	/s/ Jonathan M. Rothberg	Jonathan M. Rothberg, Ph.D.	0001076352
ROTHBERG JONATHAN M	100%	19,937,500	19,937,500	0	/s/ Jonathan M. Rothberg	Jonathan M. Rothberg, Ph.D.
23rd Century Capital LLC	1.6%	1,917,067		1,917,067	/s/ Jonathan M. Rothberg	Jonathan M. Rothberg, Ph.D., Member
2012 JMR Trust Common, LLC	2.2%	2,723,841		2,723,841	/s/ Jonathan M. Rothberg	Jonathan M. Rothberg, Ph.D., Manager
4C Holdings I, LLC	90%	17,943,750		17,943,750	/s/ Jonathan M. Rothberg	Jonathan M. Rothberg, Ph.D., Manager
4C Holdings V, LLC	10%	1,993,750		1,993,750	/s/ Jonathan M. Rothberg	Jonathan M. Rothberg, Ph.D., Manager