John T. Kim is 10% Owner at AMKOR TECHNOLOGY, INC. (AMKR). They have made 7 open-market trades across 1 company since 2008, most recently 2026-02-12.
CIK 0001158926
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.
3 open-market purchases totalling $79.8M since 2008, against 4 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| AMKR | 29,594,980 | $1.2B |
Shares reported on the most recent Form 4, priced at the 2026-02-17 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| AMKR | SELL | 2026-02-12 | 2026-02-17 | $48.49 | $484.9M | +0.7% | +1.3% | +38.9% |
| AMKR | BUY | 2025-08-01 | 2025-08-05 | $21.85 | $19.3M | +6.0% | +8.4% | +68.9% |
| AMKR | BUY | 2025-02-24 | 2025-02-26 | $21.85 | $38.0M | -13.3% | -19.9% | -17.3% |
| AMKR | SELL | 2023-02-22 | 2023-02-24 | $25.28 | $9.7M | +4.4% | +0.9% | -5.4% |
| AMKR | SELL | 2021-12-30 | 2022-01-04 | $24.68 | $124.6M | -3.6% | -18.3% | -17.5% |
| AMKR | SELL | 2020-12-17 | 2020-12-21 | $15.41 | $75.5M | -2.4% | +21.3% | +56.5% |
| AMKR | BUY | 2008-02-11 | 2008-02-13 | $8.25 | $22.5M | -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.