Form 4 for AMKR AMKOR TECHNOLOGY, INC.
Accepted 2025-12-17 00:00:00 ET · period of report 2025-12-15 · accession 0001628280-25-057639 · 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 | 2025-12-17 | 2025-12-15 | AMKR | CHURCHILL WINSTON J | Dir | S - Sale+OE | $44.29 | -5,000 | 25.9K | -16% | -$221.4K |
| D | 2025-12-17 | 2025-12-15 | AMKR | CHURCHILL WINSTON J | Dir | M - OptEx | $19.39 | +5,000 | 30.9K | +19% | +$97.0K |
| D | 2025-12-17 | 2025-12-15 | AMKR | CHURCHILL WINSTON J | Dir | M - OptEx | $0.00 | -5,000 | 15.0K | -25% | $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 | 2025-12-15 | S | D | 5,000 | $44.29 | 25,888 | D | — | — | |
| 2 | Common | Common Stock | 2025-12-15 | M | A | 5,000 | $19.39 | 30,888 | D | — | — | |
| 3 | Derivative | Director Stock Option (Right-to-Buy) | 2025-12-15 | M | D | 5,000 | $0.00 | 15,000 | D | $19.39 · — to 2031-05-18 | 5,000 Common Stock | (F1) This stock option to acquire 20,000 shares of Common Stock of Amkor Technology, Inc. was granted on May 18, 2021 and vested in full on May 17, 2022. |