PROTHENA CORP PUBLIC LTD CO (PRTA) Insider Trading -- Recent Executive & Director Transactions
11 insiders reported 59 Form 4 transactions for PROTHENA CORP PUBLIC LTD CO (PRTA) over the past 18 months (most recent 2026-10-09). Recent activity: SCULLY WILLIAM P (10% Owner) Buy 125,000 shares, SCULLY WILLIAM P (10% Owner) Buy 90,000 shares, SCULLY WILLIAM P (10% Owner) Buy 100,000 shares, SCULLY WILLIAM P (10% Owner) Buy 162,000 shares, SCULLY WILLIAM P (10% Owner) Buy 103,500 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-10-09 | SCULLY WILLIAM P | 10% Owner | Buy | 125,000 | $1.1M |
| 2026-10-09 | SCULLY WILLIAM P | 10% Owner | Buy | 90,000 | $770,904 |
| 2026-10-06 | SCULLY WILLIAM P | 10% Owner | Buy | 100,000 | $857,240 |
| 2026-09-30 | SCULLY WILLIAM P | 10% Owner | Buy | 162,000 | $1.4M |
| 2026-09-29 | SCULLY WILLIAM P | 10% Owner | Buy | 103,500 | $889,872 |
| 2026-09-21 | SCULLY WILLIAM P | 10% Owner | Buy | 100,000 | $843,460 |
| 2026-09-03 | SCULLY WILLIAM P | 10% Owner | Buy | 27,000 | $255,739 |
| 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 | Kinney Gene G. | President and CEO | Buy | 84,000 | $0 |
| 2026-07-30 | Walker Karin L | Chief Accounting Officer | Buy | 15,000 | $0 |
| 2026-07-30 | Nguyen Tran | Chief Strategy Officer and CFO | Buy | 57,000 | $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 | Swanson Chad J. | Chief Development Officer | Buy | 51,000 | $0 |
| 2026-07-30 | Isaacs Michael John | General Counsel & Company Sec. | Sell | 4,694 | $40,181 |
| 2026-07-30 | Kingston Anne Evans | Chief Strategy Officer | Sell | 3,498 | $29,943 |
| 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 |
Source: SEC Form 4 filings · as of 2026-10-09