John Charles Stone is President & VP at AMKOR TECHNOLOGY, INC. (AMKR). They have made 17 open-market trades across 1 company since 2014, most recently 2022-02-11.
CIK 0001581432
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 17 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| AMKR | 31,038 | $1.1M |
Shares reported on the most recent Form 4, priced at the 2022-02-15 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| AMKR | SELL | 2021-11-19 | 2021-11-19 | $25.00 | $234K | -12.2% | -14.3% | -4.8% |
| AMKR | SELL | 2021-08-26 | 2021-08-27 | $26.30 | $493K | +0.8% | -2.5% | -19.8% |
| AMKR | SELL | 2021-06-25 | 2021-06-29 | $24.00 | $225K | -3.5% | +2.3% | +12.9% |
| AMKR | SELL | 2021-03-18 | 2021-03-22 | $24.00 | $225K | +3.0% | +0.5% | -3.6% |
| AMKR | SELL | 2021-02-16 | 2021-02-18 | $25.23 | $473K | -3.1% | +2.0% | -15.5% |
| AMKR | SELL | 2021-02-11 | 2021-02-16 | $21.35 | $3.6M | -1.8% | -5.0% | -20.6% |
| AMKR | SELL | 2020-12-03 | 2020-12-04 | $15.25 | $858K | +0.2% | -3.3% | +34.5% |
| AMKR | SELL | 2019-10-31 | 2019-11-04 | $13.03 | $1.3M | -2.7% | -8.2% | -15.6% |
| AMKR | SELL | 2019-10-31 | 2019-11-04 | $13.03 | $1.3M | -2.7% | -8.2% | -15.6% |
| AMKR | SELL | 2019-03-14 | 2019-03-18 | $8.64 | $216K | -3.2% | +3.3% | -21.5% |
| AMKR | SELL | 2016-11-21 | 2016-11-22 | $12.35 | $309K | -6.7% | -9.0% | -14.2% |
| AMKR | SELL | 2016-11-18 | 2016-11-21 | $12.13 | $607K | -12.3% | -10.8% | -16.6% |
| AMKR | SELL | 2016-11-08 | 2016-11-09 | $11.01 | $330K | +8.5% | -4.4% | -15.5% |
| AMKR | SELL | 2016-09-07 | 2016-09-08 | $9.25 | $61K | -3.2% | +6.8% | +24.6% |
| AMKR | SELL | 2016-09-02 | 2016-09-06 | $9.25 | $31K | -4.0% | +8.6% | +22.6% |
| AMKR | SELL | 2014-11-25 | 2014-11-25 | $6.94 | $106K | -5.2% | +1.3% | +1.3% |
| AMKR | SELL | 2014-06-06 | 2014-06-09 | $10.91 | $218K | -5.2% | +1.3% | +1.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.