John F. Thero is CEO & President at AMARIN CORP PLC\UK (AMRN). They have made 13 open-market trades across 2 companies since 2012, most recently 2024-02-08.
CIK 0001199637
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.
6 open-market purchases totalling $185K since 2013, against 7 sales. Across 6 scored buys the stock is up 13.1% at ninety days, and 10.2 points ahead of the S&P over the same stretch.
6 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 33% | 50% | 50% |
| Avg Move | -8.1% | +10.4% | +13.1% |
| Alpha | -5.0% | +10.0% | +10.2% |
| Scored | 6 | 6 | 6 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CYT | BUY | 2022-05-10 | 2022-05-12 | $2.00 | $20K | +3.9% | +23.3% | +37.2% |
| AMRN | SELL | 2020-11-10 | 2020-11-12 | $4.09 | $4.6M | +10.6% | +25.7% | +98.3% |
| AMRN | SELL | 2020-03-04 | 2020-03-06 | $15.99 | $3.2M | -24.8% | -64.7% | -50.3% |
| AMRN | SELL | 2019-11-19 | 2019-11-21 | $22.65 | $12.4M | +10.0% | +2.5% | -12.6% |
| AMRN | SELL | 2019-11-11 | 2019-11-13 | $17.12 | $16.3M | -1.9% | +12.2% | -16.7% |
| AMRN | SELL | 2019-03-04 | 2019-03-06 | $21.31 | $10.7M | -9.7% | -7.6% | -16.6% |
| AMRN | SELL | 2018-11-12 | 2018-11-14 | $19.07 | $23.1M | -1.6% | -6.1% | +3.2% |
| AMRN | SELL | 2018-11-12 | 2018-11-14 | $19.07 | $11.6M | -1.6% | -6.1% | +3.2% |
| AMRN | BUY | 2017-11-30 | 2017-12-04 | $3.24 | $32K | +5.5% | +34.7% | +10.0% |
| AMRN | BUY | 2016-02-01 | 2016-02-03 | $1.37 | $34K | -2.9% | +12.5% | +39.7% |
| AMRN | BUY | 2015-08-11 | 2015-08-11 | $2.35 | $47K | -18.3% | -2.7% | -2.7% |
| AMRN | BUY | 2014-11-11 | 2014-11-12 | $0.83 | $42K | -18.3% | -2.7% | -2.7% |
| AMRN | BUY | 2013-11-20 | 2013-11-20 | $1.90 | $10K | -18.3% | -2.7% | -2.7% |
| AMRN | SELL · 10b5-1 | 2012-07-27 | 2012-07-30 | $14.34 | $4.3M | -18.3% | -2.7% | -2.7% |
| AMRN | SELL · 10b5-1 | 2012-04-09 | 2012-04-11 | $9.96 | $1.5M | -18.3% | -2.7% | -2.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.