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 |
| 2026-08-07 Purchase | 2026-08-10 3:24 pm | PROTHENA CORP PUBLIC LTD CO | PRTA | SCULLY WILLIAM P 10% Owner | 37,500 | $8.6192 | $323,220 | 925,500 (Indirect Direct) | View |
| 2026-07-28 Sale | 2026-07-30 8:34 pm | PROTHENA CORP PUBLIC LTD CO | PRTA | Zago Wagner M. Chief Scientific Officer | 51,000 | $8.56 | $436,560 | 34,000 (Direct) | View |
| 2026-07-28 Sale | 2026-07-30 8:34 pm | PROTHENA CORP PUBLIC LTD CO | PRTA | Walker Karin L Chief Accounting Officer | 15,000 | $8.56 | $128,400 | 10,000 (Direct) | View |
| 2026-07-28 Sale | 2026-07-30 8:33 pm | PROTHENA CORP PUBLIC LTD CO | PRTA | Swanson Chad J. Chief Development Officer | 40,800 | $8.56 | $349,248 | 40,733 (Direct) | View |
| 2026-07-28 Sale | 2026-07-30 8:33 pm | PROTHENA CORP PUBLIC LTD CO | PRTA | Smith Brandon S. Chief Operating Officer | 78,000 | $8.56 | $667,680 | 52,000 (Direct) | View |
| 2026-07-28 Sale | 2026-07-30 8:32 pm | PROTHENA CORP PUBLIC LTD CO | PRTA | Nguyen Tran Chief Strategy Officer and CFO | 57,000 | $8.56 | $487,920 | 40,205 (Direct) | View |
| 2026-07-28 Sale | 2026-07-30 8:31 pm | PROTHENA CORP PUBLIC LTD CO | PRTA | Kinney Gene G. President and CEO | 84,000 | $8.56 | $719,040 | 68,793 (Direct) | View |
| 2026-07-29 Sale | 2026-07-30 8:31 pm | PROTHENA CORP PUBLIC LTD CO | PRTA | Kingston Anne Evans Chief Strategy Officer | 7,662 | $8.4729 | $64,919 | 55,782 (Direct) | View |
| 2026-07-29 Sale | 2026-07-30 8:30 pm | PROTHENA CORP PUBLIC LTD CO | PRTA | Isaacs Michael John General Counsel & Company Sec. | 8,386 | $8.4731 | $71,055 | 35,745 (Direct) | View |
| 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 |
Stock options: Exercise, Award, Grant, Conversion
| Transaction Date | Reported DateTime | Exercisable Expiration | Company | Symnbol | Insider Relationship | Shares Traded | Conversion Price | Shares Owned | Filing |
| 2026-08-17 Gift | 2026-08-18 4:03 pm | N/A N/A | PROTHENA CORP PUBLIC LTD CO | PRTA | SCULLY WILLIAM P 10% Owner | 963,553 | $0 | 885,500 (Direct) | View |
| 2026-08-10 Gift | 2026-08-11 4:08 pm | N/A N/A | PROTHENA CORP PUBLIC LTD CO | PRTA | SCULLY WILLIAM P 10% Owner | 251,553 | $0 | 1,177,053 (Direct) | View |
| 2026-07-28 Exercise | 2026-07-30 8:34 pm | N/A N/A | PROTHENA CORP PUBLIC LTD CO | PRTA | Zago Wagner M. Chief Scientific Officer | 51,000 | $0 | 34,000 (Direct) | View |
| 2026-07-28 Exercise | 2026-07-30 8:34 pm | N/A N/A | PROTHENA CORP PUBLIC LTD CO | PRTA | Walker Karin L Chief Accounting Officer | 15,000 | $0 | 10,000 (Direct) | View |
| 2026-07-28 Tax Withholding | 2026-07-30 8:33 pm | N/A N/A | PROTHENA CORP PUBLIC LTD CO | PRTA | Swanson Chad J. Chief Development Officer | 3,467 | $8.56 | 40,733 (Direct) | View |
| 2026-07-28 Exercise | 2026-07-30 8:33 pm | N/A N/A | PROTHENA CORP PUBLIC LTD CO | PRTA | Swanson Chad J. Chief Development Officer | 51,000 | $0 | 40,733 (Direct) | View |
| 2026-07-28 Exercise | 2026-07-30 8:33 pm | N/A N/A | PROTHENA CORP PUBLIC LTD CO | PRTA | Smith Brandon S. Chief Operating Officer | 78,000 | $0 | 52,000 (Direct) | View |
| 2026-07-28 Exercise | 2026-07-30 8:32 pm | N/A N/A | PROTHENA CORP PUBLIC LTD CO | PRTA | Nguyen Tran Chief Strategy Officer and CFO | 57,000 | $0 | 40,205 (Direct) | View |
| 2026-07-28 Exercise | 2026-07-30 8:31 pm | N/A N/A | PROTHENA CORP PUBLIC LTD CO | PRTA | Kinney Gene G. President and CEO | 84,000 | $0 | 68,793 (Direct) | View |
| 2026-07-28 Tax Withholding | 2026-07-30 8:31 pm | N/A N/A | PROTHENA CORP PUBLIC LTD CO | PRTA | Kingston Anne Evans Chief Strategy Officer | 3,498 | $8.56 | 55,782 (Direct) | View |
| 2026-07-28 Tax Withholding | 2026-07-30 8:30 pm | N/A N/A | PROTHENA CORP PUBLIC LTD CO | PRTA | Isaacs Michael John General Counsel & Company Sec. | 4,694 | $8.56 | 35,745 (Direct) | View |
| 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 |