EcoR1 Capital, LLC sold $51M of PRTA
owner at PROTHENA CORP PUBLIC LTD CO. 6,279,684 shares at an average of $8.10, traded May 2, 2025, filed May 6, 2025.
Score components
- +12Role10% owner
- +25Trade size$50.8M at market
- +20Share of holdings soldSold 54% of holdings
- 0ClusterNo other insider selling within 14 days
What happened after comparable sells
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
This signal so far: 1m -31.2%, 3m -4.4%, 6m +39.6%.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0000935836-25-000309, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| May 2, 2025 | SOpen-market sale Ordinary Sharesindirect: See Note | -3,317,938 | $8.36 | $28M | 8,266,342 | May 6, 2025 |
| May 5, 2025 | SOpen-market sale Ordinary Sharesindirect: See Note | -977,693 | $8.11 | $7.9M | 7,288,649 | May 6, 2025 |
| May 6, 2025 | SOpen-market sale Ordinary Sharesindirect: See Note | -1,984,053 | $7.64 | $15M | 5,304,596 | May 6, 2025 |
Related signals
Other insiders at PROTHENA CORP PUBLIC LTD CO and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 61Notable | PRTAbuy PROTHENA CORP PUBLIC LTD CO | William P Scully owner | $1.8M 215,000 shares | +68% | |
| 55Moderate | PRTAbuy PROTHENA CORP PUBLIC LTD CO | William P Scully owner | $857k 100,000 shares | +47% | |
| 51Moderate | PRTAbuy PROTHENA CORP PUBLIC LTD CO | William P Scully owner | $1.4M 162,000 shares | +312% | |
| 49Moderate | PRTAbuy PROTHENA CORP PUBLIC LTD CO | William P Scully owner | $890k 103,500 shares | +124% | |
| 52Moderate | PRTAbuy PROTHENA CORP PUBLIC LTD CO | William P Scully owner | $843k 100,000 shares | +12% | |
| 29Weak | PRTAbuy PROTHENA CORP PUBLIC LTD CO | William P Scully owner | $256k 27,000 shares | +3% | |
| 36Weak | PRTAbuy PROTHENA CORP PUBLIC LTD CO | William P Scully owner | $439k 50,000 shares | +7% | |
| 30Weak | PRTAbuy PROTHENA CORP PUBLIC LTD CO | William P Scully owner | $323k 37,500 shares | +5% | |
| 16Weak | PROTHENA CORP PUBLIC LTD CO | Michael John Isaacs General Counsel & Company Sec. | $71k 8,386 shares | -19% | |
| 16Weak | PROTHENA CORP PUBLIC LTD CO | Anne Evans Kingston Chief Strategy Officer | $65k 7,662 shares | -12% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.