| Cash Dividend | Stock Dividend | |||
| Fiscal Year | Ex-dividend date | NT$ / per share | Ex-dividend date | NT$ / per share |
| 2023 | 2024/3/29 | 1.2 | - | - |
| 2022 | 2023/4/20 | 1.2 | - | - |
| 2021 | 2022/4/22 | 2.0 | - | - |
| 2020 | 2021/4/23 | 1.6 | - | - |
| 2019 | 2020/7/17 | 1.2 | - | - |
| 2018 | 2019/7/15 | 1.2 | - | - |
| 2017 | 2018/7/23 | 1.2 | - | - |
| 2016 | 2017/7/27 | 1.20007652 | - | - |
| 2015 | 2016/7/26 | 1.20053968 | - | - |
| 2014 | 2015/8/6 | 1.50003387 | - | - |
| 2013 | 2014/8/7 | 0.9994775 | - | - |
| 2012 | 2013/8/8 | 1.00690125 | - | - |
| 2011 | 2012/8/9 | 1.39971259 | - | - |
| 2010 | 2011/8/4 | 2.70920242 | - | - |
| 2009 | 2010/8/11 | 2.36760227 | 2010/8/11 | 0.19730018 |
| 2008 | 2009/8/18 | 1.5 | 2009/8/18 | 0.05 |
| 2007 | 2008/8/25 | 2.4 | 2008/8/25 | 0.05 |
| 2006 | 2007/8/10 | 1.7 | 2007/8/10 | 0.5 |
| 2005 | 2006/8/7 | 1.47 | 2006/8/7 | 0.3 |
| 2004 | 2005/7/28 | 1.1 | 2005/7/28 | 0.4 |
| 2003 | 2004/8/2 | 2.0 | 2004/8/2 | 0.7 |
| 2002 | 2003/7/29 | 1.0 | 2003/7/29 | 1.5 |
| 2001 | 2002/7/3 | 0.5 | 2002/7/3 | 2.0 |
| 2000 | 2001/5/7 | 0.5 | 2001/5/7 | 2.5 |
| 1999 | 2000/4/28 | 2.0 | 2000/4/28 | 3.0 |
| 1998 | 1999/5/7 | 1.0 | 1999/5/7 | 3.5 |
| Bank of America- Merrill Lynch | Barclays Capital | BNP Paribas Sec. |
| Citigroup Global | CLSA | Credit Suisse |
| Daiwa- Cathay Capital | Deutsche Sec. | Goldman Sachs |
| HSBC Sec. | JP Morgan Sec. | KGI Sec. |
| Macquarie Capital Sec. | Morgan Stanley | Nomura International |
| RBS (Asia) | UBS Sec. | Yuanta Sec. |