LONA — LeonaBio, Inc.
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2020-09-18.
Performance
Technicals
Others in Healthcare
Measured signals that fired on LONA
| date | signal | measured base rate |
|---|---|---|
| 2026-08-21 | Short volume far above its own normal short | -0.76% over 21 days · t = -2.79 · n = 5,897 statistically distinguishable from its control group |
| 2026-07-21 | Short volume far above its own normal short | -0.76% over 21 days · t = -2.79 · n = 5,897 statistically distinguishable from its control group |
| 2026-03-13 | Breakout to a 52-week high price | -1.00% over 21 days · t = -8.58 · n = 24,386 statistically distinguishable from its control group |
| 2026-03-05 | Cluster sale: three or more insiders insider | -0.37% over 21 days · t = -3.38 · n = 21,542 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-03-04 | Litton Mark James PRESIDENT and CEO | Open-market sale | 5.2K | 5.37 | 27.7K |
| 2026-03-04 | San Martin Javier CHIEF MEDICAL OFFICER | Open-market sale | 1.7K | 5.37 | 9.2K |
| 2026-03-04 | CHURCH KEVIN CHIEF SCIENTIFIC OFFICER | Open-market sale | 1.4K | 5.37 | 7.3K |
| 2026-03-04 | Worthington Mark GENERAL COUNSEL and CCO | Open-market sale | 1.3K | 5.37 | 7.1K |
| 2026-03-04 | Renninger Robert CHIEF FINANCIAL OFFICER | Open-market sale | 906 | 5.37 | 4.9K |
| 2026-03-03 | San Martin Javier CHIEF MEDICAL OFFICER | Option exercise | 7.4K | 0.00 | 0 |
| 2026-03-03 | Renninger Robert CHIEF FINANCIAL OFFICER | Option exercise | 3.9K | 0.00 | 0 |
| 2026-03-03 | CHURCH KEVIN CHIEF SCIENTIFIC OFFICER | Option exercise | 5.9K | 0.00 | 0 |
| 2026-03-03 | Worthington Mark GENERAL COUNSEL and CCO | Option exercise | 5.7K | 0.00 | 0 |
| 2026-03-03 | Litton Mark James PRESIDENT and CEO | Option exercise | 22.3K | 0.00 | 0 |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| PERCEPTIVE ADVISORS LLC | 19.1M | 1.9M |
| Kalehua Capital Management LLC | 8.1M | 787.4K |
| ADAR1 Capital Management, LLC | 7.5M | 727.5K |
| ACORN CAPITAL ADVISORS, LLC | 6.5M | 634.5K |
| Commodore Capital LP | 4.8M | 464.4K |
| NEA Management Company, LLC | 4.8M | 464.4K |
| TCG Crossover Management, LLC | 4.7M | 464.4K |
| Spruce Street Capital LP | 3.8M | 393.7K |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.0M | 194.8K |
| Seven Fleet Capital Management LP | 1.7M | 164.7K |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Latest SEC filings
| form | filed | period | |
|---|---|---|---|
| 10-Q | 2026-08-14 | 2026-06-30 | on EDGAR ↗ |
| 8-K | 2026-08-14 | 2026-08-14 | on EDGAR ↗ |
| 4 | 2026-07-10 | 2026-04-09 | on EDGAR ↗ |
| 4 | 2026-07-09 | 2026-06-23 | on EDGAR ↗ |
| 4 | 2026-06-24 | 2026-06-23 | on EDGAR ↗ |
| 4 | 2026-06-24 | 2026-06-23 | on EDGAR ↗ |
| 4 | 2026-06-24 | 2026-06-23 | on EDGAR ↗ |
| 4 | 2026-06-24 | 2026-06-23 | on EDGAR ↗ |
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
Recent headlines
- Leonabio, Inc. (LONA) filed form 8-K · 2026-08-14 · SEC EDGAR
- LeonaBio, Inc. (LONA) filed form 10-Q · 2026-08-14 · SEC EDGAR
- LeonaBio, Inc. (LONA) filed form 8-K · 2026-08-14 · SEC EDGAR
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