11 insiders reported 52 Form 4 transactions for PROTHENA CORP PUBLIC LTD CO (PRTA) over the past 18 months (most recent 2026-08-21). Recent activity: SCULLY WILLIAM P (10% Owner) Buy 50,000 shares, SCULLY WILLIAM P (10% Owner) Buy 336,000 shares, SCULLY WILLIAM P (10% Owner) Sell 627,553 shares, SCULLY WILLIAM P (10% Owner) Buy 251,553 shares, SCULLY WILLIAM P (10% Owner) Buy 34,000 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-21 | SCULLY WILLIAM P | 10% Owner | Buy | 50,000 | $439,430 |
| 2026-08-18 | SCULLY WILLIAM P | 10% Owner | Buy | 336,000 | $0 |
| 2026-08-18 | SCULLY WILLIAM P | 10% Owner | Sell | 627,553 | $0 |
| 2026-08-11 | SCULLY WILLIAM P | 10% Owner | Buy | 251,553 | $0 |
| 2026-08-10 | SCULLY WILLIAM P | 10% Owner | Buy | 34,000 | $293,053 |
| 2026-08-10 | SCULLY WILLIAM P | 10% Owner | Buy | 3,500 | $30,167 |
| 2026-07-30 | Isaacs Michael John | General Counsel & Company Sec. | Sell | 4,694 | $40,181 |
| 2026-07-30 | Kinney Gene G. | President and CEO | Buy | 84,000 | $0 |
| 2026-07-30 | Zago Wagner M. | Chief Scientific Officer | Buy | 51,000 | $0 |
| 2026-07-30 | Smith Brandon S. | Chief Operating Officer | Buy | 78,000 | $0 |
| 2026-07-30 | Nguyen Tran | Chief Strategy Officer and CFO | Buy | 57,000 | $0 |
| 2026-07-30 | Swanson Chad J. | Chief Development Officer | Buy | 51,000 | $0 |
| 2026-07-30 | Walker Karin L | Chief Accounting Officer | Buy | 15,000 | $0 |
| 2026-07-30 | Kingston Anne Evans | Chief Strategy Officer | Sell | 3,498 | $29,943 |
| 2026-07-30 | Smith Brandon S. | Chief Operating Officer | Sell | 78,000 | $667,680 |
| 2026-07-30 | Nguyen Tran | Chief Strategy Officer and CFO | Sell | 57,000 | $487,920 |
| 2026-07-30 | Walker Karin L | Chief Accounting Officer | Sell | 15,000 | $128,400 |
| 2026-07-30 | Kinney Gene G. | President and CEO | Sell | 84,000 | $719,040 |
| 2026-07-30 | Zago Wagner M. | Chief Scientific Officer | Sell | 51,000 | $436,560 |
| 2026-07-30 | Swanson Chad J. | Chief Development Officer | Sell | 40,800 | $349,248 |
| 2026-07-30 | Isaacs Michael John | General Counsel & Company Sec. | Sell | 8,386 | $71,055 |
| 2026-07-30 | Kingston Anne Evans | Chief Strategy Officer | Sell | 7,662 | $64,919 |
| 2026-07-30 | Swanson Chad J. | Chief Development Officer | Sell | 3,467 | $29,678 |
| 2026-06-18 | SCULLY WILLIAM P | 10% Owner | Buy | 20,000 | $157,990 |
| 2026-06-16 | SCULLY WILLIAM P | 10% Owner | Sell | 325,000 | $0 |
Source: SEC Form 4 filings · as of 2026-08-21