5 insiders have filed at UMC since 2023Q3: names, roles, reported stakes, and each person's buying and selling record from SEC Form 3/4/5 filings.
| name | role | reported stake | % of company | buys (3y) | sells (3y) |
|---|---|---|---|---|---|
| Hung Chia-Tsung | Chairman & Cso | 64.51M | 2.65% | none | none |
| Wang Jason Shi | Chief Executive Officer | 32.66M | 1.341% | none | none |
| Hsu Ming-Chih | President & COO | 8.40M | 0.345% | none | none |
| Liu Chitung | CFO & SVP | 7.37M | 0.303% | none | none |
| Wang Su-Lin | Director | 101.0k | <0.01% | none | none |
No open-market buys or sells have been reported at UMC since 2023Q3. The table shows the filed stakes; it updates when an insider files.
Full register at boothcheck.com/insiders/UMC. Stakes are the newest reported Form 3/4/5 balances (they update only when insiders file). Sales counted include pre-scheduled plan sales, labeled. A filed record, not a forecast. Nothing here is investment advice.