| cash dividend | stock dividend | |||
| Year | Ex day | NT$ / Share | Ex Date | NT$ / Share |
| 2022 | 2023.08.31 | 0.10 | 2023.08.31 | 0.24 |
| 2021 | 2022.08.02 | 0.10 | 2022.08.02 | 0.37 |
| 2020 | 2021.09.08 | 0.10 | 2021.09.08 | 0.34 |
| 2019 | 2020.07.22 | 0.20 | 2020.07.22 | 0.50 |
| 2018 | 2019.08.14 | 0.30 | 2019.08.14 | 0.50 |
| 2017 | 2018.09.06 | 0.268 | 2018.09.06 | 0.40 |
| 2016 | 2017.08.07 | 0.102 | 2017.08.07 | 0.30 |
| 2015 | 2016.09.02 | 0.10 | 2016.09.02 | 0.50 |
| 2014 | N/A | — | 2015.08.25 | 0.73 |
| 2013 | N/A | — | 2014.08.12 | 0.40 |
| 2012 | N/A | — | 2013.08.13 | 0.40 |
| 2011 | N/A | — | 2012.07.10 | 0.40 |
| 2010 | N/A | — | 2011.09.08 | 0.45 |
