Richard T. Collier is Director at PROTHENA CORP PUBLIC LTD CO (PRTA). They have made 6 open-market trades across 1 company since 2022, most recently 2023-01-05.
CIK 0001110751
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, against 6 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| PRTA | 6,219 | $52K |
Shares reported on the most recent Form 4, priced at the 2023-01-05 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| PRTA | SELL | 2023-01-05 | 2023-01-05 | $52.67 | $263K | +3.9% | +10.5% | -8.5% |
| PRTA | SELL | 2022-12-05 | 2022-12-05 | $61.90 | $543K | -3.0% | -11.5% | -11.5% |
| PRTA | SELL | 2022-11-07 | 2022-11-09 | $55.50 | $509K | +9.2% | +6.1% | +4.0% |
| PRTA | SELL | 2022-10-05 | 2022-10-07 | $57.81 | $537K | -0.9% | -0.4% | -6.2% |
| PRTA | SELL | 2022-09-28 | 2022-09-30 | $48.09 | $1.2M | -14.0% | +0.9% | -2.0% |
| PRTA | SELL | 2022-04-05 | 2022-04-07 | $39.41 | $394K | -4.9% | -28.1% | -21.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.