Filings (90d)
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies David J. Portman 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.
- Mark James Litton - $28K in LONA purchases and sales in the last 12 months
- Martin Javier San - $9K in LONA purchases and sales in the last 12 months
- Kevin Church - $7K in LONA purchases and sales in the last 12 months
- Mark Worthington - $7K in LONA purchases and sales in the last 12 months
- Robert Renninger - $5K in LONA purchases and sales in the last 12 months
More insiders (A-Z)
Browse nearby insider profiles in alphabetical order.
Frequently asked questions
Who is David J. Portman?
David J. Portman is a corporate insider, tracked as 10% Owner of LeonaBio, Inc. (LONA). InsiderAlpha holds 1 primary Form 4 filing for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has David J. Portman submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has David J. Portman been buying or selling stock?
Recorded transactions: 2 open-market purchases and 0 open-market sales across all tracked filings.
