Cooperatives Act Article 20

Without the consent of the cooperative, a member may not transfer the shares he holds to someone else or use it as the guarantee of debts. However, this rule does not apply to the shares which are held by a member and subject to compulsory enforcement or administrative execution according to law, included in bankruptcy estate, or subject to the commencement of a liquidation proceedings as ruled by laws.The transferee or heritor of the shares of a cooperative shall succeed to the rights and obligations of the transferor or the decedent. If the transferee or heritor is not a member, he/she shall join in the cooperative in accordance with the provisions of Articles 11 and 14; otherwise the amount of his/her shares shall be refunded.
中文原文 合作社法第20條
社員非經合作社之同意,不得讓與其所有之社股,或以之擔保債務。
但社員所有之社股經依法強制執行、行政執行、納入破產財團或依法裁定開始清算程序者,不在此限。
社股受讓人或繼承人,應承繼讓與人或被繼承人之權利義務。
受讓人或繼承人為非社員時,除依第十一條及第十四條之規定加入合作社者外,退還其股金。

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