Real time insider trading transaction history:
- Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
Common stock purchase or sale:
| Transaction Date | Reported DateTime | Company | Symbol | Insider Relationship | Shares Traded | Average Price | Total Amount | Shares Owned | Filing |
| 2026-06-16 Purchase | 2026-06-18 11:38 am | PROTHENA CORP PUBLIC LTD CO | PRTA | SCULLY WILLIAM P 10% Owner | 20,000 | $7.8995 | $157,990 | 888,000 (Indirect Direct) | View |
| 2026-06-11 Purchase | 2026-06-12 5:59 pm | PROTHENA CORP PUBLIC LTD CO | PRTA | SCULLY WILLIAM P 10% Owner | 125,000 | $8.1698 | $1,021,225 | 1,193,000 (Indirect Direct) | View |
| 2026-06-04 Purchase | 2026-06-05 1:46 pm | PROTHENA CORP PUBLIC LTD CO | PRTA | SCULLY WILLIAM P 10% Owner | 50,000 | $9.3059 | $465,295 | 1,068,000 (Indirect Direct) | View |
| 2026-06-02 Purchase | 2026-06-03 12:41 pm | PROTHENA CORP PUBLIC LTD CO | PRTA | SCULLY WILLIAM P 10% Owner | 50,000 | $9.426 | $471,300 | 1,018,000 (Indirect Direct) | View |
| 2026-05-22 Purchase | 2026-05-26 2:51 pm | PROTHENA CORP PUBLIC LTD CO | PRTA | SCULLY WILLIAM P 10% Owner | 100,000 | $9.813 | $981,300 | 968,000 (Indirect Direct) | View |
| 2025-05-02 Sale | 2025-05-06 7:06 pm | PROTHENA CORP PUBLIC LTD CO | PRTA | EcoR1 Capital LLC 10% Owner | 6,279,684 | $8.0959 | $50,839,807 | 5,304,596 (Indirect) | View |
| 2024-12-18 Purchase | 2025-05-02 10:29 am | PROTHENA CORP PUBLIC LTD CO | PRTA | SCULLY WILLIAM P 10% Owner | 207,436 | $13.26 | $2,749,916 | 926,943 (Indirect Direct) | View |
Stock options: Exercise, Award, Grant, Conversion
| Transaction Date | Reported DateTime | Exercisable Expiration | Company | Symnbol | Insider Relationship | Shares Traded | Conversion Price | Shares Owned | Filing |
| 2026-06-15 Gift | 2026-06-16 4:58 pm | N/A N/A | PROTHENA CORP PUBLIC LTD CO | PRTA | SCULLY WILLIAM P 10% Owner | 325,000 | $0 | 868,000 (Direct) | View |
Ownership | 2026-06-12 4:18 pm | N/A N/A | PROTHENA CORP PUBLIC LTD CO | PRTA | Isaacs Michael John General Counsel & Company Sec. | 0 | $0 | 201,487 (Direct) | View |
| 2026-05-15 Option Award | 2026-05-15 9:29 pm | N/A 2036-05-15 | PROTHENA CORP PUBLIC LTD CO | PRTA | WELCH DANIEL G Director | 27,000 | $0 | 27,000 (Direct) | View |
| 2026-05-15 Option Award | 2026-05-15 9:28 pm | N/A 2036-05-15 | PROTHENA CORP PUBLIC LTD CO | PRTA | Selkoe Dennis J. Director | 27,000 | $0 | 27,000 (Direct) | View |
| 2026-05-15 Option Award | 2026-05-15 9:28 pm | N/A 2036-05-15 | PROTHENA CORP PUBLIC LTD CO | PRTA | Ekman Lars Director | 27,000 | $0 | 27,000 (Direct) | View |
| 2026-05-15 Option Award | 2026-05-15 9:28 pm | N/A 2036-05-15 | PROTHENA CORP PUBLIC LTD CO | PRTA | Dunn William H. Jr. Director | 27,000 | $0 | 27,000 (Direct) | View |
| 2026-05-15 Option Award | 2026-05-15 9:28 pm | N/A 2036-05-15 | PROTHENA CORP PUBLIC LTD CO | PRTA | Cooke Shane Director | 27,000 | $0 | 27,000 (Direct) | View |
| 2026-05-15 Option Award | 2026-05-15 9:28 pm | N/A 2036-05-15 | PROTHENA CORP PUBLIC LTD CO | PRTA | COLLIER RICHARD T Director | 27,000 | $0 | 27,000 (Direct) | View |
Ownership | 2026-05-14 6:22 pm | N/A N/A | PROTHENA CORP PUBLIC LTD CO | PRTA | SCULLY WILLIAM P 10% Owner | 0 | $0 | 868,000 (Direct) | View |
| 2026-04-10 Option Award | 2026-04-10 7:22 pm | N/A 2036-04-10 | PROTHENA CORP PUBLIC LTD CO | PRTA | Kingston Anne Evans Chief Strategy Officer | 100,000 | $0 | 100,000 (Direct) | View |
Ownership | 2026-04-10 7:21 pm | N/A N/A | PROTHENA CORP PUBLIC LTD CO | PRTA | Kingston Anne Evans Chief Strategy Officer | 0 | $0 | 89,022 (Direct) | View |
| 2026-03-03 Option Award | 2026-03-05 4:51 pm | N/A 2036-03-03 | PROTHENA CORP PUBLIC LTD CO | PRTA | Zago Wagner M. Chief Scientific Officer | 190,000 | $0 | 190,000 (Direct) | View |
| 2026-03-03 Option Award | 2026-03-05 4:51 pm | N/A 2036-03-03 | PROTHENA CORP PUBLIC LTD CO | PRTA | Walker Karin L Chief Accounting Officer | 150,000 | $0 | 150,000 (Direct) | View |
| 2026-03-03 Option Award | 2026-03-05 4:50 pm | N/A 2036-03-03 | PROTHENA CORP PUBLIC LTD CO | PRTA | Swanson Chad J. Chief Development Officer | 190,000 | $0 | 190,000 (Direct) | View |
| 2026-03-03 Option Award | 2026-03-05 4:50 pm | N/A 2036-03-03 | PROTHENA CORP PUBLIC LTD CO | PRTA | Smith Brandon S. Chief Operating Officer | 190,000 | $0 | 190,000 (Direct) | View |
| 2026-03-03 Option Award | 2026-03-05 4:50 pm | N/A 2036-03-03 | PROTHENA CORP PUBLIC LTD CO | PRTA | Nguyen Tran Chief Strategy Officer and CFO | 230,000 | $0 | 230,000 (Direct) | View |
| 2026-03-03 Option Award | 2026-03-05 4:50 pm | N/A 2036-03-03 | PROTHENA CORP PUBLIC LTD CO | PRTA | Malecek Michael J Chief Legal Officer | 190,000 | $0 | 190,000 (Direct) | View |
| 2026-03-03 Option Award | 2026-03-05 4:49 pm | N/A 2036-03-03 | PROTHENA CORP PUBLIC LTD CO | PRTA | Kinney Gene G. President and CEO | 520,000 | $0 | 520,000 (Direct) | View |
| 2025-07-28 Option Award | 2025-07-30 5:52 pm | N/A N/A | PROTHENA CORP PUBLIC LTD CO | PRTA | Zago Wagner M. Chief Scientific Officer | 85,000 | $0 | 85,000 (Direct) | View |
| 2025-07-28 Option Award | 2025-07-30 5:52 pm | N/A N/A | PROTHENA CORP PUBLIC LTD CO | PRTA | Walker Karin L Chief Accounting Officer | 25,000 | $0 | 25,000 (Direct) | View |
| 2025-07-28 Option Award | 2025-07-30 5:52 pm | N/A N/A | PROTHENA CORP PUBLIC LTD CO | PRTA | Swanson Chad J. Chief Development Officer | 85,000 | $0 | 85,000 (Direct) | View |
| 2025-07-28 Option Award | 2025-07-30 5:51 pm | N/A N/A | PROTHENA CORP PUBLIC LTD CO | PRTA | Smith Brandon S. Chief Operating Officer | 130,000 | $0 | 130,000 (Direct) | View |
| 2025-07-28 Option Award | 2025-07-30 5:51 pm | N/A N/A | PROTHENA CORP PUBLIC LTD CO | PRTA | Nguyen Tran Chief Strategy Officer and CFO | 95,000 | $0 | 97,205 (Direct) | View |
| 2025-07-28 Option Award | 2025-07-30 5:51 pm | N/A N/A | PROTHENA CORP PUBLIC LTD CO | PRTA | Malecek Michael J Chief Legal Officer | 80,000 | $0 | 80,000 (Direct) | View |
| 2025-07-28 Option Award | 2025-07-30 5:50 pm | N/A N/A | PROTHENA CORP PUBLIC LTD CO | PRTA | Kinney Gene G. President and CEO | 140,000 | $0 | 152,793 (Direct) | View |
| 2025-05-14 Option Award | 2025-05-16 4:57 pm | N/A 2035-05-14 | PROTHENA CORP PUBLIC LTD CO | PRTA | WELCH DANIEL G Director | 20,183 | $0 | 20,183 (Direct) | View |
| 2025-05-14 Option Award | 2025-05-16 4:54 pm | N/A 2035-05-14 | PROTHENA CORP PUBLIC LTD CO | PRTA | Selkoe Dennis J. Director | 20,183 | $0 | 20,183 (Direct) | View |
| 2025-05-14 Option Award | 2025-05-16 4:52 pm | N/A 2035-05-14 | PROTHENA CORP PUBLIC LTD CO | PRTA | Kim Helen Susan Director | 20,183 | $0 | 20,183 (Direct) | View |
| 2025-05-14 Option Award | 2025-05-16 4:51 pm | N/A 2035-05-14 | PROTHENA CORP PUBLIC LTD CO | PRTA | Ekman Lars Director | 20,183 | $0 | 20,183 (Direct) | View |
| 2025-05-14 Option Award | 2025-05-16 4:48 pm | N/A 2035-05-14 | PROTHENA CORP PUBLIC LTD CO | PRTA | Dunn William H. Jr. Director | 20,183 | $0 | 20,183 (Direct) | View |
| 2025-05-14 Option Award | 2025-05-16 4:47 pm | N/A 2035-05-14 | PROTHENA CORP PUBLIC LTD CO | PRTA | Cooke Shane Director | 20,183 | $0 | 20,183 (Direct) | View |
| 2025-05-14 Option Award | 2025-05-16 4:46 pm | N/A 2035-05-14 | PROTHENA CORP PUBLIC LTD CO | PRTA | COLLIER RICHARD T Director | 20,183 | $0 | 20,183 (Direct) | View |
| 2025-05-14 Option Award | 2025-05-16 4:44 pm | N/A 2035-05-14 | PROTHENA CORP PUBLIC LTD CO | PRTA | Cobb Paula K Director | 20,183 | $0 | 20,183 (Direct) | View |
| 2024-12-18 Gift | 2025-05-02 10:29 am | N/A N/A | PROTHENA CORP PUBLIC LTD CO | PRTA | SCULLY WILLIAM P 10% Owner | 1,177,700 | $0 | 926,943 (Direct) | View |