Summary
Updated Aug 30, 2026
Ryan Martins is Chief Financial Officer of 89bio, Inc. (ETNB). 4 SEC Form 4 filings on record going back to 2024, most recently on 30 October 2025.
Recent Transactions
6Every recent SEC Form 4 transaction Ryan Martins has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who have reported open-market trades at the same companies as Ryan Martins. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- RA CAPITAL MANAGEMENT, L.P. - $27.62M of ETNB open-market activity on record
- Quoc Le-Nguyen - $342K of ETNB open-market activity on record
- Rohan Palekar - $123K of ETNB open-market activity on record
- Charles McWherter - $80K of ETNB open-market activity on record
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Ryan Martins?
Ryan Martins is a corporate insider, tracked as Chief Financial Officer of 89bio, Inc. (ETNB). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Ryan Martins last file a Form 4?
The most recent primary Form 4 on record is dated 30 October 2025, one of 4 filings going back to 2024.
Where can I see all of Ryan Martins'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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