Hisamitsu Pharmaceutical Delisting Effective May 11, 2026

Apr. 17, 2026 TSE Decision on Delisting, etc.: HISAMITSU PHARMACEUTICAL CO.,INC.

Post TSE has decided on delisting and designation as Securities to Be Delisted as follows.

１．Delisting and Designation as Securities to Be Delisted

| （１）Issue Name | HISAMITSU PHARMACEUTICAL CO.,INC. stock
(Code: 4530, Market Segment: Prime Market) |
| （２）Period of Designation as
Securities to Be Delisted | From Apr. 17, 2026 (Fri.) to May 10, 2026 (Sun.) |
| （３）Delisting Date | May 11, 2026 (Mon.)
(Note) In cases where circumstances in which the company should be promptly delisted occur, TSE may change the period of designation as Securities to Be Delisted and the delisting date. |
| （４）Reason
(Related Clause) | Due to falling under a case where the company implements a reverse stock split with a split ratio at which the number of all the shares owned by shareholders other than a specified party will be less than one share
(Securities Listing Regulations, Rule 601, Paragraph 1, Item (18)) |
| （５）Details of Reason | At the general shareholders meeting of HISAMITSU PHARMACEUTICAL CO.,INC. (hereinafter "the Company") held today, the agenda item regarding a reverse stock split with a split ratio at which each of the shares held by shareholders other than specified entities will be less than one share was approved. |

２．Exclusion from Securities in Lieu of Money

The stock of the Company will be excluded from securities in lieu of money for the following items from Apr. 20, 2026 (Mon.) inclusive.
- Customer margin for margin transactions and when-issued transactions
- Trading margin for when-issued transactions
- Trading participant security money
- Participant bonds

Current Designations of Securities Under Supervision & Securities to Be Delisted
Designation History of Securities Under Supervision & Securities to Be Delisted DISCLAIMER: This translation may be used for reference purposes only. This English version is not an official translation of the original Japanese document. In cases where any differences occur between the English version and the original Japanese version, the Japanese version shall prevail. This translation is subject to change without notice. Tokyo Stock Exchange, Inc. and/or Japan Exchange Regulation shall individually or jointly accept no responsibility or liability for damage or loss caused by any error, inaccuracy, misunderstanding, or changes with regard to this translation.

Enquiry

Tokyo Stock Exchange, Inc.　Listing Department, Corporate Disclosure Office, Planning & Coordination, Listed Company Services
TEL:+81-3-3666-0141(Switchboard)

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