KIM JOHN T

KIM JOHN T, 10% owner, sold 10,000,000 shares of AMKR at $48.49 ($484.9M) on 2026-02-12, reducing stake from 39.59M to 29.59M.

A 10% owner executed a substantial $484.9M sale, offloading 10,000,000 shares (-25.3% of his pre-transaction holdings) at $48.49 per share. The stock has since declined 16.6% from its 52-week high of $56.17 and currently trades at $46.84, suggesting the sale occurred near a relative peak. Across his prior same-ticker activity at AMKR, the insider bought on 2025-08-01 (which delivered a 90d return of +46.1%) and bought on 2025-02-24 (which returned -16.4% over 90 days), showing mixed precision in past entries. The company's fundamentals remain challenged: annual revenue contracted -2.8% year-over-year and the P/E ratio stands at 37.47, suggesting limited margin of safety at current valuations despite recent momentum (90-day gain of +49.0%). A substantial reduction in a major shareholder's stake, combined with moderating near-term price action post-sale, warrants close attention to whether this signals a shift in insider sentiment or portfolio positioning at AMKR.

10% owner KIM JOHN T buys 441,589 shares ($9.6M) at $21.85; cluster of 4 other insiders also bought in past 14 days; timing history unfavorable.

KIM JOHN T, a 10% owner, purchased 441,589 shares of AMKOR TECHNOLOGY at $21.85 on 2025-08-01, increasing his holdings from 3,347,890 to 3,789,479 shares. The transaction occurred within a 14-day cluster window in which 4 other insiders also made purchases, which may suggest coordinated appetite for the stock despite modest current fundamentals (annual revenue growth of -2.8%, P/E of 18.02). However, the insider's cross-ticker track record shows concerning prior performance: his average 90-day return after buys is -16.4%, and his prior buy at AMKR on 2025-02-24 returned -16.4% over 90 days, with 0 of 1 prior buys well-timed at the 90-day mark. The stock is currently down 33.6% from its 52-week high, though up 25.8% over the past 90 days from the date of this filing, suggesting recent recovery that may not reflect the timing of this particular purchase.

10% Owner KIM JOHN T buys 869,565 shares of AMKR for $18,999,995.25; cluster buy pattern emerges.

KIM JOHN T, a 10% owner, purchased 869,565 shares at $21.85 on 2025-02-24 for a total value of $18,999,995.25, increasing holdings by 35.1% from 2,478,325 to 3,347,890 shares. The purchase occurred as AMKR trades 50.4% below its 52-week high of $44.68 and has declined 14.9% over the past 90 days, positioning the acquisition below recent peak valuations. Notably, this transaction is part of a broader cluster buy pattern involving 4 other insiders also purchasing within the past 14 days, suggesting coordinated confidence among company leadership at current price levels. The substantial scale of this single transaction—a near-$19M outlay by a major shareholder—paired with the multi-insider cluster activity, signals material conviction to accumulate equity at depressed valuations relative to recent trading history.