Announcement of the ex-dividend record date of the Company and revise distribution ratio per share

1.Date of the resolution by the board of directors or shareholders meeting or decision by the Company:2020/08/18

2.Type of ex-rights or ex-dividend (please enter: “Ex-rights”,

”Ex-dividend”, or ”Ex-rights and dividend”):Ex-dividend

3.Type and monetary amount of dividend distribution:

Original: Total cash amount of NT$1,918,248,384, or equivalent to NT$6 per common share.

Revised: Total cash amount of NT$1,918,248,384, or equivalent to

NT$5.76191933 per common share.

4.Ex-rights (ex-dividend) trading date:2020/09/07

5.Last date before book closure:2020/09/08

6.Book closure starting date:2020/09/09

7.Book closure ending date:2020/09/13

8.Ex-rights (ex-dividend) record date:2020/09/13

9.Any other matters that need to be specified:

(1)The bondholders of unsecured CB4 converted into common shares, caused the outstanding shares increase to 332,918,299 shares from 319,708,064 shares, therefore, the shareholders’ cash dividend per share adjusted to 5.76191933 from 6.0 accordingly.

(2) The cash dividend will be distributed on 2020/09/30