As of October 03, 2026, United Microelectronics's top three insider holders are Che-Jen Hu (Vice President, 3.21Mn shares), Chitung Liu (Cfo Svp, 2.64Mn shares), Jen-Tsung Lin (Vice President, 1.17Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Che-Jen Hu | Vice President | 3,214,080 | 0 | 3,214,080 | 45.7% | 30 Jun, 2026 |
| 2 | Chitung Liu | Cfo Svp | 2,639,757 | 0 | 2,639,757 | 37.6% | 17 Sep, 2026 |
| 3 | Jen-Tsung Lin | Vice President | 1,172,140 | 0 | 1,172,140 | 16.7% | 22 Sep, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 22 Sep, 2026 | Jen-Tsung Lin | Vice President | Disposed S | 10,000 | $163.00 | $1.63Mn | 1,172,140 | Direct |
| 16 Sep, 2026 | Chitung Liu | Cfo Svp | Disposed S | 1,200,000 | $142.33 | $170.80Mn | 3,039,757 | Direct |
| 17 Sep, 2026 | Chitung Liu | Cfo Svp | Disposed S | 400,000 | $145.00 | $58.00Mn | 2,639,757 | Direct |
| 07 Sep, 2026 | Chitung Liu | Cfo Svp | Acquired J | 1,000,000 | $0.00 | $0 | 4,322,917 | Direct |
| 07 Sep, 2026 | Chitung Liu | Cfo Svp | Disposed J | 1,000,000 | $0.00 | $0 | 1,000,000 | Indirect |
| 13 Jul, 2026 | Chitung Liu | Cfo Svp | Disposed S | 1,900,000 | $154.89 | $294.29Mn | 3,322,917 | Direct |
| 30 Jun, 2026 | Che-Jen Hu | Vice President | Disposed S | 10,000 | $171.30 | $1.71Mn | 3,214,080 | Direct |