ROTHBERG JONATHAN M

7 filings 2 distinct issuers Active 2021-03-26 → 2026-08-28

Track Record

Total filings

4 SCHEDULE 13D/A · 1 SCHEDULE · 2 SC

Distinct issuers

29% issuer diversity

Median stake

100%

8,657,935 avg shares

AI briefs cached

0/7

intent-classified filings

Backtested Performance · post-filing returns (split + dividend adjusted)

Median 30d

-36.1%

across 1 filings · win rate 0%

Median 60d

-30.4%

across 1 filings · win rate 0%

Median 90d

-26.0%

across 1 filings · win rate 0%

Median 1y

+17.9%

across 1 filings · win rate 100%

Anchor: closest trading day on/after filing's date_of_event. Source: Yahoo Finance daily adj_close. Past performance is not indicative of future results.

Filings · 7 total

Filed	Form	Issuer	Stake	Shares
2026-08-28	SCHEDULE 13D/A	Quantum-Si IncQSI	100.00%	14,376,415	view →
2026-08-17	SCHEDULE 13D/A	Butterfly Network, Inc.BFLY	—	828,775	view →
2026-07-21	SCHEDULE 13D/A	Butterfly Network, Inc.BFLY	—	828,775	view →
2026-07-17	SCHEDULE 13D/A	Butterfly Network, Inc.BFLY	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 →

Alert me when ROTHBERG JONATHAN M files anything

Free. We email you when criteria match. One-click unsubscribe in every email.

Track this filer's every move in real time.

Custom alerts on filer activity · full feed access · daily intelligence · API. From $49/mo.

See pricing →