Real time Form 13D and 13G transaction reports:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
- Shares have beem 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>>
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2025-06-05 7:43 pm Sale | 2025-05-30 | 13G | Prothena Corporation plc PRTA | Wellington Management Group LLP | 108,208 0.200% | -5,022,668 (-97.89%) | Filing History |
| 2025-06-04 5:18 pm Purchase | 2025-05-29 | 13G | Prothena Corporation plc PRTA | Logos Global Management LP | 2,950,000 5.500% | 2,950,000 (New Position) | Filing History |
| 2025-05-29 9:08 pm Sale | 2025-05-27 | 13D | Prothena Corporation plc PRTA | EcoR1 Capital, LLC | 0 0.000% | -5,304,596 (Position Closed) | Filing History |
| 2025-05-15 10:00 am Sale | 2025-03-31 | 13G | Prothena Corporation plc PRTA | Fennell Todd W. | 4,590,805 8.500% | -54,342 (-1.17%) | Filing History |
| 2025-05-14 10:34 am Purchase | 2025-03-31 | 13G | Prothena Corporation plc PRTA | SCULLY WILLIAM P | 5,607,748 10.400% | 49,458 (+0.89%) | Filing History |
| 2025-05-06 7:08 pm Sale | 2025-05-02 | 13D | Prothena Corporation plc PRTA | EcoR1 Capital, LLC | 5,304,596 9.900% | -6,279,684 (-54.21%) | Filing History |
| 2025-02-21 2:49 pm Purchase | 2024-12-31 | 13G | Prothena Corporation plc PRTA | SCULLY WILLIAM P | 5,558,290 10.300% | 1,522,150 (+37.71%) | Filing History |
| 2025-02-14 3:35 pm Purchase | 2024-12-31 | 13G | Prothena Corporation plc PRTA | Fennell Todd W. | 4,645,147 8.600% | 1,476,320 (+46.59%) | Filing History |
| 2025-02-10 10:25 am Purchase | 2024-12-31 | 13G | Prothena Corporation plc PRTA | Wellington Management Group LLP | 5,130,876 9.500% | 952,088 (+22.78%) | Filing History |
| 2025-01-03 7:45 pm Unchanged | 2024-12-31 | 13D | Prothena Corporation plc PRTA | EcoR1 Capital, LLC | 11,584,280 21.500% | 0 (Unchanged) | Filing History |
| 2024-11-14 1:22 pm Sale | 2024-09-30 | 13G | Prothena Corporation plc PRTA | T. Rowe Price Associates, Inc. | 3,822,434 7.100% | -420,576 (-9.91%) | Filing History |
| 2024-11-13 07:00 am Purchase | 2024-09-30 | 13G | Prothena Corporation plc PRTA | Fennell Todd W. | 3,168,827 5.890% | 27,368 (+0.87%) | Filing History |
| 2024-11-13 06:06 am Purchase | 2024-09-30 | 13G | Prothena Corporation plc PRTA | SCULLY WILLIAM P | 4,036,140 7.500% | 533,659 (+15.24%) | Filing History |
| 2024-11-08 10:46 am Sale | 2024-09-30 | 13G | Prothena Corporation plc PRTA | Wellington Management Group LLP | 4,178,788 7.770% | -1,619,953 (-27.94%) | Filing History |
| 2024-11-07 09:33 am Purchase | 2024-10-31 | 13G | Prothena Corporation plc PRTA | Wellington Management Group LLP | 5,798,741 10.780% | 4,824,841 (+495.41%) | Filing History |
| 2024-10-18 10:54 am Sale | 2024-09-30 | 13G | Prothena Corporation plc PRTA | STATE STREET CORP STT | 1,674,909 3.100% | -1,083,655 (-39.28%) | Filing History |
| 2024-02-14 12:16 pm Purchase | 2024-02-05 | 13G | Prothena Corporation plc PRTA | Fennell Todd W. | 3,141,459 5.850% | 3,141,459 (New Position) | Filing History |
| 2024-02-14 10:51 am Purchase | 2024-02-05 | 13G | Prothena Corporation plc PRTA | SCULLY WILLIAM P | 3,502,481 6.530% | 1,039,481 (+42.20%) | Filing History |
| 2024-02-14 10:03 am Purchase | 2023-12-31 | 13G | Prothena Corporation plc PRTA | T. Rowe Price Associates, Inc. | 4,243,010 7.900% | 1,037,107 (+32.35%) | Filing History |
| 2024-02-13 7:49 pm Sale | 2023-12-31 | 13G | Prothena Corporation plc PRTA | Avidity Partners Management LP | 0 0.000% | -2,953,000 (Position Closed) | Filing History |