Dennis J. Selkoe is Director at PROTHENA CORP PUBLIC LTD CO (PRTA). They have made 13 open-market trades across 1 company since 2015, most recently 2023-07-03.
CIK 0001582306
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 13 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| PRTA | 2,845 | $24K |
Shares reported on the most recent Form 4, priced at the 2023-07-03 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| PRTA | SELL · 10b5-1 | 2023-07-03 | 2023-07-03 | $67.43 | $674K | +2.1% | -1.5% | -32.1% |
| PRTA | SELL · 10b5-1 | 2023-05-03 | 2023-05-05 | $57.00 | $855K | -3.2% | -11.8% | -15.2% |
| PRTA | SELL | 2022-01-03 | 2022-01-05 | $47.26 | $337K | -16.7% | -24.1% | -14.6% |
| PRTA | SELL | 2021-10-01 | 2021-10-01 | $67.69 | $629K | -7.9% | -17.3% | -31.3% |
| PRTA | SELL | 2021-07-30 | 2021-07-30 | $49.47 | $495K | +15.1% | +37.4% | +12.3% |
| PRTA | SELL | 2017-10-02 | 2017-10-04 | $64.15 | $436K | -5.6% | -2.5% | -40.8% |
| PRTA | SELL | 2017-07-07 | 2017-07-07 | $58.11 | $203K | +13.5% | +4.7% | +6.5% |
| PRTA | SELL | 2017-04-03 | 2017-04-05 | $55.86 | $196K | +1.2% | +1.1% | +13.6% |
| PRTA | SELL | 2017-03-01 | 2017-03-03 | $59.25 | $207K | -0.7% | -1.8% | -8.8% |
| PRTA | SELL | 2016-11-28 | 2016-11-30 | $62.43 | $312K | -9.5% | -17.4% | -1.5% |
| PRTA | SELL | 2016-11-28 | 2016-11-30 | $62.42 | $312K | -9.5% | -17.4% | -1.5% |
| PRTA | SELL | 2016-08-22 | 2016-08-24 | $54.62 | $273K | +8.5% | +24.5% | +19.2% |
| PRTA | SELL | 2016-08-22 | 2016-08-24 | $54.61 | $273K | +8.5% | +24.5% | +19.2% |
| PRTA | SELL | 2016-05-23 | 2016-05-25 | $45.00 | $225K | +1.6% | -26.1% | +12.8% |
| PRTA | SELL | 2016-04-04 | 2016-04-06 | $45.00 | $225K | +2.2% | -17.8% | -15.2% |
| PRTA | SELL · 10b5-1 | 2015-12-01 | 2015-12-03 | $68.74 | $215K | -31.1% | -7.0% | -46.4% |
| PRTA | SELL · 10b5-1 | 2015-09-01 | 2015-09-03 | $55.45 | $173K | -31.1% | -7.0% | -7.0% |
| PRTA | SELL · 10b5-1 | 2015-06-01 | 2015-06-03 | $39.01 | $122K | -31.1% | -7.0% | -7.0% |
| PRTA | SELL · 10b5-1 | 2015-03-09 | 2015-03-10 | $25.56 | $80K | -31.1% | -7.0% | -7.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.