March 24, 2025
| Composition of Shareholders | Number of Shareholders | Number of Shares held | Shareholding Percentage(%) |
 Government Agencies |
3 | 4,456,178 | 0.93 |
 Financial Institutions |
7 | 98,744 | 0.02 |
 Other Juridical Persons |
296 | 113,761,441 | 23.73 |
 Domestic Natural Persons |
78,708 | 321,151,094 | 67.00 |
 Foreign Institutions & Natural Persons |
230 | 39,829,029 | 8.32 |
| Total | 79,244 | 479,296,486 | 100.00 |
| Name of major shareholder | Number of shares held | Percentage(%) |
| Microbio Co., Ltd. | 101,743,446 | 21.22 |
| Richard M. Tsai | 34,453,288 | 7.18 |
| Daniel M. Tsai | 7,015,896 | 1.46 |
| Jing Ying Investment Co., Ltd | 6,017,225 | 1.25 |
| JPMorgan Chase Bank N.A., in custody for Vanguard Total International Stock Index Fund, a series of Vanguard Star Funds |
5,146,407 | 1.07 |
| JPMorgan Custody Vanguard Group Emerging Markets Fund Investment Account | 4,835,424 | 1.00 |
| Lu, Kung-Ming | 3,173,875 | 0.66 |
| Executive Yuan National Science and Technology Development Fund | 2,974,890 | 0.62 |
| Chang, Kuo-jun | 2,832,093 | 0.59 |
| Citi Custody Barclays Capital SBL/PB In-vestment Account | 2,763,488 | 0.57 |