| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
10% Owner
1 company
Scully William P is a 10% Owner at PRTA. Recent filings cover 10 purchases and 0 sales. Those positions are worth an estimated $770K at current prices.
Our model assigns Scully William P a below-average insider score of 29/100, based on 4 past trades. Over a 12-month horizon, 0.0% of those trades were profitable, with an average 12-month return of -29.9%.
Scully William P's largest disclosed position is in PRTA as 10% Owner, worth about $770K. Net of sales, the recent Form 4 record there shows accumulation of 364,936 shares.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Aug 7, 2026 | PRTA Prothena Corporation Plc | 10% Owner | Buy | 37,500 | $8.62 | $323,220.00 | +4.5% | - | - | |
| Jun 16, 2026 | PRTA Prothena Corporation Plc | 10% Owner | Buy | 20,000 | $7.90 | $157,990.00 | +2.7% | - | - | |
| May 22, 2026 | PRTA Prothena Corporation Plc | 10% Owner | Buy | 100,000 | $9.81 | $981,300.00 | +13.6% | - | - | |
| Jan 14, 2025 | PRTA Prothena Corp Public Ltd Co | 10% Owner | Buy | 207,436 | $13.26 | $2,749,916.18 | +4.8% | -21.5% | -27.4% |