その株券、新株予約権付社債券その他の有価証券で政令で定めるもの(以下この章及び第二十七条の三十の十一(第五項を除く。)において「株券等」という。)について有価証券報告書を提出しなければならない発行者又は特定上場有価証券(流通状況がこれに準ずるものとして政令で定めるものを含み、株券等に限る。)の発行者の株券等につき、当該発行者以外の者が行う買付け等(株券等の買付けその他の有償の譲受けをいい、これに類するものとして政令で定めるものを含む。以下この節において同じ。)であつて次のいずれかに該当するものは、公開買付けによらなければならない。ただし、適用除外買付け等(新株予約権(会社法第二百七十七条の規定により割り当てられるものであつて、当該新株予約権が行使されることが確保されることにより公開買付けによらないで取得されても投資者の保護のため支障を生ずることがないと認められるものとして内閣府令で定めるものを除く。以下この項において同じ。)を有する者が当該新株予約権を行使することにより行う株券等の買付け等、株券等の買付け等を行う者がその者の特別関係者(第七項第一号に掲げる者のうち内閣府令で定めるものに限る。)から行う株券等の買付け等その他政令で定める株券等の買付け等をいう。)は、この限りでない。
A purchase, etc. of share certificates, corporate bond certificates with share options, or other securities specified by Cabinet Order (hereinafter referred to as "share certificates, etc." in this Chapter and Article 27-30-11 (excluding paragraph (5))) (a purchase, etc. means a purchase or other acquisition for compensation of share certificates, etc., and includes acts specified by Cabinet Order as being similar to this; hereinafter the same applies in this Section) whose issuer is required to submit an annual securities report, or of the share certificates, etc. of an issuer of specified listed securities (including those specified by Cabinet Order as having equivalent distribution statuses to these, and limited to share certificates, etc.), which is conducted by a person other than the issuer and which falls under any of the following, must be conducted by means of a tender offer; provided, however, that this does not apply to a purchase, etc. excluded from application (meaning a purchase, etc. of share certificates, etc. that the holder of share options (excluding those allotted under the provisions of Article 277 of the Companies Act and specified by Cabinet Office Order as those which would not compromise the protection of investors even if acquired by means other than a tender offer by ensuring the exercise of that share option; hereinafter the same applies in this paragraph) effects by exercising those share options, a purchase, etc. of share certificates, etc. that the person effecting the purchase, etc. makes from its specially related party (limited to a person set forth in paragraph (7), item (i) and specified by Cabinet Office Order), or any other purchase, etc. of share certificates, etc. that is specified by Cabinet Order):