ROTHBERG JONATHAN M → Quantum-Si Inc QSI

Stake: — Shares: 14,376,415 Class: Class A common stock, par value $0.0001 per share, Class B common stock, par value $0.0001 per share

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)

0 transactions

0 buys · 0 sales · 0 awards/exercises

Issuer Cluster

3 13D/G filings on this issuer

2 other filings besides this one

Filer Track Record

7 filings by this filer

6 other filings in the data moat

Short Interest · settle 2026-08-14

DTC 4.68

14,273,563 shares short · -7.4% vs prior

Other 13D/G Filings on Quantum-Si Inc

Filed	Form	Filer	Stake	Shares
2022-06-28	SC	Foresite Capital Fund IV, L.P.	—	—	view →
2021-06-14	SC	Flynn James E	—	—	view →

Other Filings by ROTHBERG JONATHAN M

Filed	Form	Issuer	Stake	Shares
2026-08-17	SCHEDULE 13D/A	Butterfly Network, Inc.	—	828,775	view →
2026-07-21	SCHEDULE 13D/A	Butterfly Network, Inc.	—	828,775	view →
2026-07-17	SCHEDULE 13D/A	Butterfly Network, Inc.	100.00%	828,775	view →
2025-03-07	SCHEDULE	Butterfly Network, Inc. BFLY	100.00%	26,426,937	view →
2022-09-16	SC	Butterfly Network, Inc. BFLY	—	—	view →
2021-03-26	SC	Butterfly Network, Inc. BFLY	—	—	view →

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