Regulations Governing Public Tender Offers for Securities of Public Companies Article 7

Any public tender offer to purchase the securities of a public company shall not be made until after a report has been filed with the FSC and a public announcement made, except under the circumstances set forth in Subparagraphs 1 to 3 of Paragraph 2 of Article 43-1 of the Act.For any competitive public tender offer for securities issued by the same public company, a report of public tender offer shall be filed with the FSC and a public announcement made at least five trading days prior to the expiry date of the original public tender offer period.
中文原文 公開收購公開發行公司有價證券管理辦法第7條
公開收購公開發行公司有價證券者,除有本法第四十三條之一第二項第一款至第三款情形外,應向本會申報並公告後始得為之。
對同一公開發行公司發行之有價證券競爭公開收購者,應於原公開收購期間屆滿之日五個營業日以前向本會辦理公開收購之申報並公告。

English translation for reference only; the Chinese text prevails. Not legal advice.