United MicroelectronicsUMC
Semiconductors & chip supply chain
Insider transactions
Directors, officers and 10% owners, as reported on Forms 3, 4 and 5. Grants, option exercises and shares withheld for tax are shown but not counted as buying or selling.
- Open-market buys
- 0
- Open-market sales
- 5
- Shares bought
- 0
- Shares sold
- 3.5M
Past 12 months · $0.00 bought, $526.4M sold
| Filed | Insider | Transaction | Shares | Price | Value | Held after |
|---|---|---|---|---|---|---|
| Jentsung LinVP | Open-market saleForm 4 | 10,000 | $163.00 | $1.6M | 1.2M | |
| Hungyu YenCHRO · VP | HoldingForm 3 | 0 | — | — | 339,682 | |
| Chitung LiuCFO · SVP | HoldingForm 4 · indirect | 0 | — | — | 150,000 | |
| Chitung LiuCFO · SVP | Open-market saleForm 4 | 400,000 | $145.00 | $58.0M | 2.6M | |
| Chitung LiuCFO · SVP | HoldingForm 4 · indirect | 0 | — | — | 1.0M | |
| traded Sep 16, 2026 | Chitung LiuCFO · SVP | Open-market saleForm 4 | 1.2M | $142.33 | $170.8M | 3.0M |
| Chitung LiuCFO · SVP | HoldingForm 4 · indirect | 0 | — | — | 150,000 | |
| traded Sep 7, 2026 | Chitung LiuCFO · SVP | OtherForm 4 | 1.0M | $0.00 | $0.00 | 4.3M |
| traded Sep 7, 2026 | Chitung LiuCFO · SVP | OtherForm 4 · indirect | 1.0M | $0.00 | $0.00 | 1.0M |
| Chitung LiuCFO · SVP | Open-market saleForm 4 | 1.9M | $154.89 | $294.3M | 3.3M | |
| Chitung LiuCFO · SVP | HoldingForm 4 · indirect | 0 | — | — | 150,000 | |
| Chitung LiuCFO · SVP | HoldingForm 4 · indirect | 0 | — | — | 2.0M | |
| Chejen HuVP | Open-market saleForm 4 | 10,000 | $171.30 | $1.7M | 3.2M | |
| Tzyyming ChengVP | HoldingForm 3 | 0 | — | — | 2.9M | |
| Yuchih ChuangVP | HoldingForm 3 | 0 | — | — | 1.2M | |
| Jinshuang ChenCHRO · VP | HoldingForm 3 | 0 | — | — | 2.3M | |
| Oliver ChangSVP | HoldingForm 3 | 0 | — | — | 4.8M | |
| Yuchih ChuangVP | HoldingForm 3 · indirect | 0 | — | — | 13,943 | |
| Mingtsung ChenVP | HoldingForm 3 | 0 | — | — | 2.5M | |
| Shihchieh HsuVP | HoldingForm 3 | 0 | — | — | 2.1M | |
| Shihchieh HsuVP | HoldingForm 3 · indirect | 0 | — | — | 2,889 | |
| Kueichun HungSVP | HoldingForm 3 | 0 | — | — | 3.9M | |
| Chejen HuVP | HoldingForm 3 | 0 | — | — | 3.2M | |
| Shufen HsuVP | HoldingForm 3 · indirect | 0 | — | — | 7,000 | |
| Shufen HsuVP | HoldingForm 3 | 0 | — | — | 1.6M | |
| Kueichun HungSVP | HoldingForm 3 · indirect | 0 | — | — | 2.0M | |
| Linwu KuoVP | HoldingForm 3 | 0 | — | — | 913,080 | |
| Ching Yu LiaoCLO · VP | HoldingForm 3 | 0 | — | — | 732,480 | |
| Jentsung LinVP | HoldingForm 3 | 0 | — | — | 1.2M | |
| Mingyu LinVP | HoldingForm 3 · indirect | 0 | — | — | 781,408 | |
| Shihfang TzouVP | HoldingForm 3 | 0 | — | — | 1.5M | |
| Chiaao LuVP | HoldingForm 3 | 0 | — | — | 170,000 | |
| Shihwei LiuVP | HoldingForm 3 | 0 | — | — | 2.2M | |
| Wen Yi TanVP | HoldingForm 3 | 0 | — | — | 650,600 | |
| Yingsheng ShenVP | HoldingForm 3 | 0 | — | — | 1.3M | |
| Mingyu LinVP | HoldingForm 3 | 0 | — | — | 3.5M | |
| Chunghsien WuSVP | HoldingForm 3 | 0 | — | — | 3.7M | |
| Chunghsien WuSVP | HoldingForm 3 · indirect | 0 | — | — | 304 | |
| Chitung LiuCFO · SVP | HoldingForm 3 · indirect | 0 | — | — | 150,000 | |
| Chiatsung HungChair · CSci · Director | HoldingForm 3 | 0 | — | — | 63.2M |