Hideki Garren is Chief Medical Officer at PROTHENA CORP PUBLIC LTD CO (PRTA). They have made 7 open-market trades across 1 company since 2022, most recently 2023-09-13.
CIK 0001854126
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases since 2023, against 7 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| PRTA | SELL · 10b5-1 | 2023-09-13 | 2023-09-13 | $55.48 | $111K | -12.9% | -18.8% | -37.6% |
| PRTA | SELL · 10b5-1 | 2023-08-16 | 2023-08-16 | $58.56 | $169K | -6.7% | -11.5% | -40.4% |
| PRTA | SELL · 10b5-1 | 2023-07-12 | 2023-07-12 | $67.50 | $264K | -4.8% | -8.7% | -30.5% |
| PRTA | SELL · 10b5-1 | 2023-06-16 | 2023-06-16 | $74.00 | $542K | +0.9% | +3.8% | -20.4% |
| PRTA | SELL · 10b5-1 | 2023-06-14 | 2023-06-14 | $74.22 | $607K | -4.3% | -2.3% | -22.7% |
| PRTA | SELL | 2023-03-15 | 2023-03-17 | $48.41 | $581K | +1.6% | +10.0% | +49.8% |
| PRTA | SELL | 2022-12-01 | 2022-12-02 | $62.51 | $250K | -10.7% | -17.6% | -18.4% |
| PRTA | SELL | 2022-11-01 | 2022-11-03 | $61.86 | $463K | +14.7% | +11.4% | -1.0% |
| PRTA | SELL | 2022-10-03 | 2022-10-05 | $60.90 | $244K | +0.6% | -5.5% | -7.3% |
| PRTA | SELL | 2022-09-15 | 2022-09-16 | $30.00 | $120K | +100.4% | +100.7% | +102.2% |
| PRTA | SELL | 2022-08-01 | 2022-08-03 | $30.52 | $122K | +5.5% | -13.1% | +104.9% |
| PRTA | SELL | 2022-07-06 | 2022-07-08 | $30.00 | $240K | +4.9% | +6.4% | +88.8% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.