TAIWAN · TWSE / TPEx
GCS
環宇-KY · 4991 · TPEx (OTC) · Semiconductors
Share price, 2026-10-19NT$431.501 month +3.2% · 1 year +202.8%
Directors and supervisors hold20,8430.0% of shares issued
Of which pledged0.0%0
Revenue, 2026-09+112.9%year on year
Share price, last 12 months
Daily closes adjusted for cash and stock dividends, against the TAIEX index rebased to the same start. Prices from Yahoo Finance.
Directors, officers and major shareholders
Holdings reported for 2026-09. At election = shares held when the director was elected. Related parties = holdings of the person's spouse, minor children and nominees. One person with two roles is listed once.
| Person | Role | At election | Now | Of the company | Pledged | Related parties |
|---|---|---|---|---|---|---|
| 黃大倫 | Chairman · Other | — | 0 | — | — | 2,696,885 |
| 安寶信 | Director · President | — | 0 | — | — | 294,739 |
| 晶成半導體股份有限公司 | Director | 20,843 | 20,843 | 0.02% | — | — |
| 蔡長達 | Director (corporate representative) | — | 0 | — | — | — |
| 李存忠 | Director (corporate representative) | — | 0 | — | — | — |
| 曾宗琳 | Independent director | — | 0 | — | — | — |
| 汪林麗珠 | Independent director | — | 0 | — | — | — |
| 方頌仁 | Independent director | — | 0 | — | — | — |
| 余有崇 | Vice president | — | 361,884 | 0.30% | — | — |
| 丘傳榮Wing Yau | Vice president | — | 188,272 | 0.16% | — | — |
| SALVADOR JR,ELMER AGUINALDO | Vice president | — | 8,096 | 0.01% | — | — |
| LUU,BICH THAO THI | Vice president | — | 30,096 | 0.02% | — | — |
| 蔡曄 | Vice president | — | 18,500 | 0.02% | — | — |
| 張至瑜 | Chief financial officer · Chief accountant | — | 6,628 | 0.01% | — | — |
| 林紓瑋 | Other | — | 31,174 | 0.03% | — | — |