Company Act Article 197

I.Each director shall, after having been elected, declare to the competent authority the number and amount of the shares of the company being held by him/her at the time when he/she is elected.In case a director of a company whose shares are issued to the public that has transferred, during the term of office as a director, more than one half of the company's shares being held by him/her at the time he/she is elected, he/she shall, ipso facto, be discharged from the office of director.II.If the number of company's shares held by a director is increased or reduced during his/her term of office as a director, he/she shall declare such change to the competent authority and shall place a public notice of such a fact.III.If any director of a company whose shares are issued to the public, after having been elected and before his/her inauguration of the office of director, has transferred more than one half of the total number of shares of the company he/she holds at the time of his/her election as such; or had transferred more than one half of the total number of shares he/she held within the share transfer prohibition period fixed prior to the convention of a shareholders' meeting, then his/her election as a director shall become invalid.
中文原文 公司法第197條
董事經選任後,應向主管機關申報,其選任當時所持有之公司股份數額;公開發行股票之公司董事在任期中轉讓超過選任當時所持有之公司股份數額二分之一時,其董事當然解任。
董事在任期中其股份有增減時,應向主管機關申報並公告之。
公開發行股票之公司董事當選後,於就任前轉讓超過選任當時所持有之公司股份數額二分之一時,或於股東會召開前之停止股票過戶期間內,轉讓持股超過二分之一時,其當選失其效力。

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