LeonaBio, Inc. (LONA) insider trading
LeonaBio, Inc. insiders have made 1 open-market purchase worth $0 since Oct 29, 2026, by 1 insider. The latest: David J. Portman (10% owner) bought $0, filed Oct 29, 2026, scored 30 out of 100.
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Insider purchases
| Filed | Insider | Stake | Score | Bought | 1 week | 1 month |
|---|---|---|---|---|---|---|
| Oct 29 Form 4 (opens sec.gov) |
David J. Portman10% owner10% owner | New position | 30 | $0 3,149,470 at $3149.47 |
— | — |
Investors with more than 5% of LONA (13D and 13G)
| Filed | Investor | Kind | Stake |
|---|---|---|---|
| Oct 28 13D/A | Sermonix Pharmaceuticals, Inc. | Activist | 25.1% |
| Oct 26 13D/A | Perceptive Advisors LLC | Activist | 19.99% |
A 13D is filed by an investor who may push for change; a 13G by a passive one.
Insiders who bought LONA
- David J. Portman 10% owner
Questions
Are insiders buying LONA stock?
Yes. In the last 90 days, 1 open-market purchase was filed, worth $0.
Who bought LONA stock most recently?
David J. Portman, 10% owner, bought 3,149,470 shares for $0 (Form 4 (opens sec.gov), filed Oct 29, 2026).
How does InsiderBeacon score an insider buy?
Out of 100, from who bought, how much their stake grew, the size of the trade, whether other insiders bought within ten days, where the price sat in its 52-week range, and whether it was a first or a routine buy. The score is fixed when the filing arrives. The formula and the research behind it.
Insiders are also buying, same industry
Data as of Oct 29, 2026, from SEC EDGAR Form 4 filings: open-market purchases (code P) of $25,000 or more, and open-market sales. Every row links to its filing. Scores summarise what a filing says (how the score works); outcomes are hypothetical, from the first close after the filing, and past results don't predict future ones. Disclaimer