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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

Insider filings, most recent first
FiledInsiderTransactionSharesPriceValueHeld after
Jentsung LinVPOpen-market saleForm 410,000$163.00$1.6M1.2M
Hungyu YenCHRO · VPHoldingForm 30——339,682
Chitung LiuCFO · SVPHoldingForm 4 · indirect0——150,000
Chitung LiuCFO · SVPOpen-market saleForm 4400,000$145.00$58.0M2.6M
Chitung LiuCFO · SVPHoldingForm 4 · indirect0——1.0M
traded Sep 16, 2026Chitung LiuCFO · SVPOpen-market saleForm 41.2M$142.33$170.8M3.0M
Chitung LiuCFO · SVPHoldingForm 4 · indirect0——150,000
traded Sep 7, 2026Chitung LiuCFO · SVPOtherForm 41.0M$0.00$0.004.3M
traded Sep 7, 2026Chitung LiuCFO · SVPOtherForm 4 · indirect1.0M$0.00$0.001.0M
Chitung LiuCFO · SVPOpen-market saleForm 41.9M$154.89$294.3M3.3M
Chitung LiuCFO · SVPHoldingForm 4 · indirect0——150,000
Chitung LiuCFO · SVPHoldingForm 4 · indirect0——2.0M
Chejen HuVPOpen-market saleForm 410,000$171.30$1.7M3.2M
Tzyyming ChengVPHoldingForm 30——2.9M
Yuchih ChuangVPHoldingForm 30——1.2M
Jinshuang ChenCHRO · VPHoldingForm 30——2.3M
Oliver ChangSVPHoldingForm 30——4.8M
Yuchih ChuangVPHoldingForm 3 · indirect0——13,943
Mingtsung ChenVPHoldingForm 30——2.5M
Shihchieh HsuVPHoldingForm 30——2.1M
Shihchieh HsuVPHoldingForm 3 · indirect0——2,889
Kueichun HungSVPHoldingForm 30——3.9M
Chejen HuVPHoldingForm 30——3.2M
Shufen HsuVPHoldingForm 3 · indirect0——7,000
Shufen HsuVPHoldingForm 30——1.6M
Kueichun HungSVPHoldingForm 3 · indirect0——2.0M
Linwu KuoVPHoldingForm 30——913,080
Ching Yu LiaoCLO · VPHoldingForm 30——732,480
Jentsung LinVPHoldingForm 30——1.2M
Mingyu LinVPHoldingForm 3 · indirect0——781,408
Shihfang TzouVPHoldingForm 30——1.5M
Chiaao LuVPHoldingForm 30——170,000
Shihwei LiuVPHoldingForm 30——2.2M
Wen Yi TanVPHoldingForm 30——650,600
Yingsheng ShenVPHoldingForm 30——1.3M
Mingyu LinVPHoldingForm 30——3.5M
Chunghsien WuSVPHoldingForm 30——3.7M
Chunghsien WuSVPHoldingForm 3 · indirect0——304
Chitung LiuCFO · SVPHoldingForm 3 · indirect0——150,000
Chiatsung HungChair · CSci · DirectorHoldingForm 30——63.2M

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