Company · CIK 0001033767 · SIC 3674 — Semiconductors & Related Devices · NYSE
UNITED MICROELECTRONICS CORP · UMC
Insider activity reported against this company. All insider holders · On EDGAR ↗
Reported at this company — common stock
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 22, 2026 SForm 4 → | Sep 22, 6:11 am EDT | Jen-Tsung LinVice President | 10,000 | $163.00 | $1,630,000 | 1,172,140 | −0.85% | |
| Sep 16, 2026 SForm 4 → | Sep 17, 6:07 am EDT | Chitung LiuCFO & SVP | 1,600,000 | $143.00 | $228,799,600 | 2,639,757 | −37.7% | |
| Sep 7, 2026 JForm 4 → | Sep 8, 6:01 am EDT | Chitung LiuCFO & SVP | 2,000,000 | — | — | 1,000,000 | — |
Reported at this company — derivatives (options, RSUs, warrants)
No reported derivative activity in this period.