第一三共（4568） – Daiichi Sankyo Announces “Partial Amendments to the Articles of Incorporation”

Company name: DAIICHI SANKYO COMPANY, LIMITED Representative: Sunao Manabe, Representative Director, President and CEO (Code no.: 4568, Prime Market, Tokyo Stock Exchange) Please address inquiries to Kentaro Asakura, Vice President, Corporate Communications Department Telephone: +81-3-6225-1126 https://www.daiichisankyo.com Daiichi Sankyo Announces “Partial Amendments to the Articles of Incorporation” Tokyo, Japan – (May 19, 2022) – Daiichi Sankyo Company, Limited (hereafter, the Company) today announced that it resolved at the Board of Directors’ meeting held on May 19, 2022 to propose an agenda “Partial Amendments to the Articles of Incorporation” at the 17th Ordinary General Meeting of Shareholders to be held on June 27, 2022. 1. Reason for the amendments The amended provisions stipulated in the supplementary provision of Article 1 of the Act Partially Amending the Companies Act (Act No. 70 of 2019) will be enforced on September 1, 2022. In order to prepare for providing General Meeting of Shareholders’ material in electronic format, the Articles of Incorporation of the Company shall be amended as follows. (Article 16 of the current Articles of Incorporation) (1) The proposed amendments to Article 16, Paragraph 1 shall stipulate that the Company takes the electronic provision measure for information included in the reference document for General Meeting of Shareholders, etc. (2) The proposed amendments to Article 16, Paragraph 2 shall establish a provision to limit the scope of matters to be included in the paper copy to be sent to shareholders who have requested it. (3) The provisions related to the Disclosure on Internet of Reference Materials for General Meeting of Shareholders Deemed and Deemed Provision of that Information (Article 16 of the current Articles of Incorporation) will become unnecessary and will therefore be deleted. (4) In line with the above establishment and deletion of the provisions, supplementary provisions related to the effective date, etc. shall be established. 1 2. Detail of the proposed amendments Detail of the proposed amendments are as follows: Deleted Article 16 (Disclosure of the Reference Materials for a General Shareholders Meeting on the Internet and Deemed Provision) The Company may, in convening a General Shareholders Meeting, deem to provide information with respect to items which should be described or displayed in the reference materials for the General Shareholders Meeting, business reports, financial statements and consolidated financial statements by disclosing them on the Internet in accordance with ordinances of the Ministry of Justice. Newly Article 16 (Electronic Provision Measure, Etc.) established 16.1 The Company shall, when convening a General Meeting of Shareholders, take the electronic provision measure for information included in the reference document for General Meeting of Shareholders, etc. 16.2 Among the matters subject to the electronic provision measure, the Company may choose not to include all or part of the matters stipulated in the Ordinance of the Ministry of Justice in the paper copy to be sent to shareholders who have requested it by the record date for voting rights. (Supplementary Provisions) 1. The deletion of Article 16 (Disclosure of the Reference Materials for a General Shareholders Meeting on the Internet and Deemed Provision) of the Articles of Incorporation before amendment and Article 16 (Electronic Provision Measure, Etc.) of the Articles of Incorporation after amendment shall come into effect on September 1, 2022 which is the effective date of the amended provisions stipulated in the supplementary provision of Article 1 of the Act Partially Amending the Companies Act (Act No. 70 of 2019) (hereinafter, “the Effective Date”). 2. Notwithstanding the provisions of the preceding paragraph, Article 16 of the Articles of Incorporation before amendment shall remain in force with respect to a General Meeting of Shareholders to be held on a date within six (6) months from the Effective Date. 3. These supplementary provisions shall be deleted on the later of either the day on which six (6) months elapse from the Effective Date or the day on which three (3) months elapse from the day of the General Meeting of Shareholders set forth in the preceding paragraph. 3. Schedule Ordinary General Meeting of Shareholders to approve the amendments: June 27, 2022 (plan) Effective date of the amendments: June 27, 2022 (plan) 2