Joseph J. Larosa - SEC Form 4 Insider Trading Activity
EVP General Counsel and Secret
Summary
Updated Aug 16, 2026
Joseph J. Larosa is a corporate insider tracked by InsiderAlpha. No SEC Form 4 filings recorded in the last 90 days.
Profile
Joseph J. Larosa holds the role of EVP General Counsel and Secret at REGENERON PHARMACEUTICALS, INC. (REGN). Larosa has reported 3 insider filings with the SEC since 2024. The most recent filing was in November 2025.
- Role
- EVP General Counsel and Secret
Board memberships
- REGENERON PHARMACEUTICALS, INC.
Trading Pattern
InsiderAlpha's records for Joseph J. Larosa go back to 2024: 3 primary Form 4 filings, an average of 1.0 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Career & Filing History
Every role Joseph J. Larosa has reported on a Form 4, reconstructed from the filings themselves. Reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- EVP General Counsel and Secret at REGENERON PHARMACEUTICALS, INC. (REGN) - 3 filings, 2024 to 2025
Recent Transactions
5Most Active Insiders Right Now
Joseph J. Larosa has no recent co-filers at the same companies, so here are the insiders with the largest open-market activity across the market in the last 90 days.
- VisionWave Holdings, Inc. - $7.98B of SVRE open-market activity in the last 90 days
- Magnetar Financial LLC - $6.62B of CRWV open-market activity in the last 90 days
- AI Alpine (Luxembourg) S.a.r.l. - $2.69B of INIO open-market activity in the last 90 days
- SGF FANG Holdings, LP - $2.04B of FANG open-market activity in the last 90 days
- BX Mozart ML-2 Holdco L.P. - $1.22B of MDLN open-market activity in the last 90 days
- BCP 8 Holdings Mozart Manager L.L.C. - $1.22B of MDLN open-market activity in the last 90 days
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Joseph J. Larosa?
Joseph J. Larosa holds the role of EVP General Counsel and Secret at REGENERON PHARMACEUTICALS, INC. (REGN). Larosa has reported 3 insider filings with the SEC since 2024. The most recent filing was in November 2025.…
Where can I see all of Joseph J. Larosa's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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