Form 4 for UMC UNITED MICROELECTRONICS CORP
Accepted 2026-09-17 06:07:37 ET · period of report 2026-09-16 · accession 0001193125-26-393652 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M | 2026-09-17 06:07 | 2026-09-16+ | UMC | Liu Chitung | CFO, SVP | S - Sale | $143.00 | -1.60M | 2.64M | -38% | -$228.80M |
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 Shares | 2026-09-16 | S | D | 1,200,000 | $142.33 | 3,039,757 | D | — | — | (F1) New Taiwan Dollars (F2) Includes 1,126,840 shares of Restricted Stock Award (RSA) and a specified number of shares subject to the RSA will vest annually on December 5 from 2026 to 2029. |
| 2 | Common | Common Shares | 2026-09-17 | S | D | 400,000 | $145.00 | 2,639,757 | D | — | — | (F1) New Taiwan Dollars (F2) Includes 1,126,840 shares of Restricted Stock Award (RSA) and a specified number of shares subject to the RSA will vest annually on December 5 from 2026 to 2029. |