Form 4 for AMKR AMKOR TECHNOLOGY, INC.
Accepted 2026-02-24 00:00:00 ET · period of report 2026-02-20 · accession 0001628280-26-011069 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DM | 2026-02-24 | 2026-02-20 | AMKR | Rutten Guillaume Marie Jean | Dir | M - OptEx | $0.00 | +172.3K | 553.1K | +45% | $0 |
| DM | 2026-02-24 | 2026-02-20 | AMKR | Rutten Guillaume Marie Jean | Dir | M - OptEx | $0.00 | -172.3K | 56.5K | -75% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-02-20 | M | A | 112,941 | $0.00 | 493,730 | D | — | — | |
| 2 | Common | Common Stock | 2026-02-20 | M | A | 59,388 | $0.00 | 553,118 | D | — | — | |
| 3 | Derivative | Restricted Stock Units | 2026-02-20 | M | D | 59,388 | $0.00 | 118,795 | D | $0.00 · — to — | 59,388 Common Stock | (F2) Represents shares of the Issuer's common stock underlying time-vested RSUs granted on February 20, 2025 (the "2025 Grant Date") pursuant to the Issuer's Equity Incentive Plan. The RSUs were awarded for no consideration other than the Reporting Person's service as a service provider of the Issuer and will vest in three equal annual installments beginning on the first anniversary of the 2025 Grant Date and annually thereafter, such that 100% will be vested on the third anniversary of the 2025 Grant Date. |
| 4 | Derivative | Restricted Stock Units | 2026-02-20 | M | D | 112,941 | $0.00 | 56,470 | D | $0.00 · — to — | 112,941 Common Stock | (F1) Represents shares of Amkor Technology, Inc. (the "Issuer") common stock underlying time-vested restricted stock units ("RSUs") granted on February 20, 2024 (the "2024 Grant Date") pursuant to the Issuer's Equity Incentive Plan. The RSUs were awarded for no consideration other than the Reporting Person's service as a service provider of the Issuer and will vest over three years, with 40% of the RSUs vesting on each of the first anniversary and the second anniversary of the 2024 Grant Date, and 20% vesting on the third anniversary of the 2024 Grant Date, such that 100% will be vested on the third anniversary of the 2024 Grant Date. |