| 2023-07-03 | Sale | Prothena Corporation plc PRTA | director | 5,000 0.0093% | $67.43 | $337,150 | -50.69% | |
| 2023-05-03 | Sale | Prothena Corporation plc PRTA | director | 15,000 0.0243% | $57.00 | $855,000 | -41.6% | |
| 2022-01-03 | Sale | Prothena Corporation plc PRTA | director | 5,000 0.0103% | $47.45 | $237,233 | -31.47% | |
| 2021-10-01 | Sale | Prothena Corporation plc PRTA | director | 8,057 0.0174% | $67.53 | $544,113 | -52.32% | |
| 2021-07-30 | Sale | Prothena Corporation plc PRTA | director | 10,000 0.0216% | $49.47 | $494,749 | -25.15% | |
| 2017-10-02 | Sale | Prothena Corporation plc PRTA | director | 3,500 0.0092% | $64.17 | $224,583 | -47.63% | |
| 2017-07-07 | Sale | Prothena Corporation plc PRTA | director | 3,500 0.009% | $58.11 | $203,399 | -32.89% | |
| 2017-04-03 | Sale | Prothena Corporation plc PRTA | director | 3,500 0.0094% | $55.86 | $195,523 | -1.46% | |
| 2017-03-01 | Sale | Prothena Corporation plc PRTA | director | 3,500 0.0096% | $59.25 | $207,364 | -9.73% | |
| 2016-11-28 | Sale | Prothena Corporation plc PRTA | director | 5,000 0.015% | $62.42 | $312,118 | -9.15% | |
| 2016-08-22 | Sale | Prothena Corporation plc PRTA | director | 5,000 0.0146% | $54.62 | $273,076 | -0.28% | |
| 2016-05-24 | Sale | Prothena Corporation plc PRTA | director | 4,820 0.0137% | $45.00 | $216,900 | +15.61% | |
| 2016-04-04 | Sale | Prothena Corporation plc PRTA | director | 5,000 0.0148% | $45.00 | $225,000 | +17.27% | |
| 2015-12-01 | Sale | Prothena Corporation plc PRTA | director | 3,125 0.0101% | $68.74 | $214,803 | -31.69% | |
| 2015-09-01 | Sale | Prothena Corporation plc PRTA | director | 3,125 0.0101% | $55.45 | $173,280 | -13.28% | |
| 2015-06-01 | Sale | Prothena Corporation plc PRTA | director | 3,125 0.0099% | $39.01 | $121,902 | +22.7% | |
| 2015-03-09 | Sale | Prothena Corporation plc PRTA | director | 3,125 0.0109% | $25.56 | $79,867 | +82.5% |