William P Scully bought $2.7M of PRTA
owner at PROTHENA CORP PUBLIC LTD CO. 207,436 shares at an average of $13.26, traded Dec 18, 2024, filed May 2, 2025.
Score components
- +12Role10% owner
- +25Trade size$2.7M at market
- +3Relative to holdingsHoldings up 17%
- +18Price context0% above the 52-week low; 46% below the 52-week high
- 0ClusterNo other insider buying within 14 days
- 0Repeat buyingFirst buy in 90 days
- 0Track recordToo few past buys to judge (0 with prices)
- -5Outside holderA 10% owner who is not an officer or director
What happened after comparable buys
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 -46.0%, 3m -19.9%, 6m +26.5%.
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 0000950170-25-062317, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Dec 18, 2024 | GGift Ordinary Shares, par value $0.01 per share | +430,000 | $0.00 | $0 | 1,224,257 | May 2, 2025 |
| Dec 18, 2024 | POpen-market purchase Ordinary Shares, par value $0.01 per share | +73,436 | $13.93 | $1.0M | 1,297,693 | May 2, 2025 |
| Dec 19, 2024 | GGift Ordinary Shares, par value $0.01 per share | -681,000 | $0.00 | $0 | 616,693 | May 2, 2025 |
| Dec 20, 2024 | POpen-market purchase Ordinary Shares, par value $0.01 per share | +2,000 | $15.91 | $32k | 618,693 | May 2, 2025 |
| Dec 20, 2024 | GGift Ordinary Shares, par value $0.01 per share | -500 | $0.00 | $0 | 618,193 | May 2, 2025 |
| Dec 31, 2024 | POpen-market purchase Ordinary Shares, par value $0.01 per share | +1,200 | $13.37 | $16k | 619,393 | May 2, 2025 |
| Dec 31, 2024 | POpen-market purchase Ordinary Shares, par value $0.01 per share | +800 | $13.39 | $11k | 620,193 | May 2, 2025 |
| Dec 31, 2024 | POpen-market purchase Ordinary Shares, par value $0.01 per share | +30,000 | $12.99 | $390k | 650,193 | May 2, 2025 |
| Jan 2, 2025 | GGift Ordinary Shares, par value $0.01 per share | -13,200 | $0.00 | $0 | 636,993 | May 2, 2025 |
| Jan 3, 2025 | GGift Ordinary Shares, par value $0.01 per share | -1,000 | $0.00 | $0 | 635,993 | May 2, 2025 |
| Jan 14, 2025 | POpen-market purchase Ordinary Shares, par value $0.01 per share | +100,000 | $12.79 | $1.3M | 735,993 | May 2, 2025 |
| Dec 20, 2024 | GGift Ordinary Shares, par value $0.01 per shareindirect: By Spouse | -40,000 | $0.00 | $0 | 59,000 | May 2, 2025 |
| Jan 15, 2025 | GGift Ordinary Shares, par value $0.01 per shareindirect: By Spouse | -12,000 | $0.00 | $0 | 47,000 | May 2, 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.