Form 4 for AMKR AMKOR TECHNOLOGY, INC.
Accepted 2026-05-15 16:37:56 ET · period of report 2026-05-13 · accession 0001628280-26-035658 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2026-05-15 16:37 | 2026-05-13 | AMKR | Rutten Guillaume Marie Jean | Dir | M - OptEx | $0.00 | +482 | 503.0K | +0.1% | $0 |
| D | 2026-05-15 16:37 | 2026-05-13 | AMKR | Rutten Guillaume Marie Jean | Dir | M - OptEx | $0.00 | -482 | 0 | -100% | $0 |
| D | 2026-05-15 16:37 | 2026-05-13 | AMKR | Rutten Guillaume Marie Jean | Dir | A - Grant | $0.00 | +2,613 | 2,613 | New | $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 | 2026-05-13 | M | A | 482 | $0.00 | 503,040 | D | — | — | (F1) On April 1, 2026, the Reporting Person was granted 482 time-vested restricted stock units ("RSUs") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan, as amended (the "Plan"), and the applicable award agreement (the "April 2026 RSUs"). In connection with the vesting of the April 2026 RSUs on May 13, 2026, the April 2026 RSUs converted into common stock of the Issuer on a one-for-one basis. (F1) On April 1, 2026, the Reporting Person was granted 482 time-vested restricted stock units ("RSUs") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan, as amended (the "Plan"), and the applicable award agreement (the "April 2026 RSUs"). In connection with the vesting of the April 2026 RSUs on May 13, 2026, the April 2026 RSUs converted into common stock of the Issuer on a one-for-one basis. (F1) On April 1, 2026, the Reporting Person was granted 482 time-vested restricted stock units ("RSUs") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan, as amended (the "Plan"), and the applicable award agreement (the "April 2026 RSUs"). In connection with the vesting of the April 2026 RSUs on May 13, 2026, the April 2026 RSUs converted into common stock of the Issuer on a one-for-one basis. |
| 2 | Derivative | Restricted Stock Units | 2026-05-13 | M | D | 482 | $0.00 | 0 | D | — · — to — | 482 Common Stock | (F1) On April 1, 2026, the Reporting Person was granted 482 time-vested restricted stock units ("RSUs") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan, as amended (the "Plan"), and the applicable award agreement (the "April 2026 RSUs"). In connection with the vesting of the April 2026 RSUs on May 13, 2026, the April 2026 RSUs converted into common stock of the Issuer on a one-for-one basis. (F1) On April 1, 2026, the Reporting Person was granted 482 time-vested restricted stock units ("RSUs") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan, as amended (the "Plan"), and the applicable award agreement (the "April 2026 RSUs"). In connection with the vesting of the April 2026 RSUs on May 13, 2026, the April 2026 RSUs converted into common stock of the Issuer on a one-for-one basis. (F1) On April 1, 2026, the Reporting Person was granted 482 time-vested restricted stock units ("RSUs") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan, as amended (the "Plan"), and the applicable award agreement (the "April 2026 RSUs"). In connection with the vesting of the April 2026 RSUs on May 13, 2026, the April 2026 RSUs converted into common stock of the Issuer on a one-for-one basis. |
| 3 | Derivative | Restricted Stock Units | 2026-05-13 | A | A | 2,613 | $0.00 | 2,613 | D | — · — to — | 2,613 Common Stock | (F2) Represents shares of common stock underlying RSUs granted on May 13, 2026 (the "Grant Date") pursuant to the Plan (the "May 2026 RSUs"). Subject to the terms and conditions of the applicable award agreement, the May 2026 RSUs may be converted into common stock of the Issuer on a one-for-one basis and will vest in full on the earlier of the first anniversary of the Grant Date or the date of the Issuer's first annual meeting of stockholders immediately following the Grant Date. The May 2026 RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer. (F2) Represents shares of common stock underlying RSUs granted on May 13, 2026 (the "Grant Date") pursuant to the Plan (the "May 2026 RSUs"). Subject to the terms and conditions of the applicable award agreement, the May 2026 RSUs may be converted into common stock of the Issuer on a one-for-one basis and will vest in full on the earlier of the first anniversary of the Grant Date or the date of the Issuer's first annual meeting of stockholders immediately following the Grant Date. The May 2026 RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer. (F2) Represents shares of common stock underlying RSUs granted on May 13, 2026 (the "Grant Date") pursuant to the Plan (the "May 2026 RSUs"). Subject to the terms and conditions of the applicable award agreement, the May 2026 RSUs may be converted into common stock of the Issuer on a one-for-one basis and will vest in full on the earlier of the first anniversary of the Grant Date or the date of the Issuer's first annual meeting of stockholders immediately following the Grant Date. The May 2026 RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer. |