Summary
Updated Aug 31, 2026
Robert A. Lenz is Director of NovaBridge Biosciences (NBP). 4 SEC Form 4 filings on record going back to 2024, most recently on 25 August 2026. Most recent open-market trade: sold $125K of NMRA on 11 October 2024. Lifetime open-market sales: $208K.
Recent Transactions
3Every recent SEC Form 4 transaction Robert A. Lenz has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Robert A. Lenz go back to 2024: 4 primary Form 4 filings, an average of 1.3 per year. 2 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Robert A. Lenz files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Deep Track Biotechnology Master Fund, Ltd. - $60.00M of LBRX open-market activity in the last 12 months
- Pontifax Management 4 G.P. (2015) Ltd. - $15.00M of LBRX open-market activity in the last 12 months
- Ran Nussbaum - $15.00M of LBRX open-market activity in the last 12 months
- Vida Ventures GP III, L.L.C. - $5.00M of LBRX open-market activity in the last 12 months
- Mark Arnold Hagler - $577K of NBP open-market activity in the last 12 months
- Sean Wuxiong Cao - $43K of NBP open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Robert A. Lenz?
Robert A. Lenz is a corporate insider, tracked as Director of NovaBridge Biosciences (NBP). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Robert A. Lenz submitted recently?
2 primary Form 4 filings in the last 90 days, covering 2 companies.
Has Robert A. Lenz been buying or selling stock?
Recorded transactions: 0 open-market purchases and 2 open-market sales ($208K) across all tracked filings.
Where can I see all of Robert A. Lenz'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.
Learn More
Follow Robert A. Lenz and every insider like them
A free account opens the full scored daily plan and every past day, a watchlist for any ticker, and 3 months of price history on every company page. No card.
Free plan available · Paid plans start with a 7-day free trial