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Disclosure4367KOEI CHEMICAL COMPANY,LIMITEDMaterials and Chemicals

Notice Regarding the Delisting of Our Shares

Following shareholder approval of the share exchange agreement with SUMITOMO CHEMICAL COMPANY,LIMITED, our common shares will be delisted from the Tokyo Stock Exchange Standard Market effective 30 July 2026.

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Decision and Details

Annual General Meeting of Shareholders

Delisting of our shares

Decision25 June 2026
Implementation30 July 2026 (scheduled; delisting will take effect on the same date)
Going forwardOur common shares will be delisted from the Tokyo Stock Exchange Standard Market effective 30 July 2026.
Reason

The proposal concerning the share exchange agreement under which SUMITOMO CHEMICAL COMPANY,LIMITED will become the wholly owning parent company and KOEI CHEMICAL COMPANY,LIMITED will become the wholly owned subsidiary was approved as proposed at the Annual General Meeting of Shareholders held on 25 June 2026.

Decision and Details
ItemDetails
Matter CoveredDelisting of our shares
Decision-Making BodyAnnual General Meeting of Shareholders
Decision Date25 June 2026
Implementation Date30 July 2026 (scheduled; delisting will take effect on the same date)
ReasonThe proposal concerning the share exchange agreement under which SUMITOMO CHEMICAL COMPANY,LIMITED will become the wholly owning parent company and KOEI CHEMICAL COMPANY,LIMITED will become the wholly owned subsidiary was approved as proposed at the Annual General Meeting of Shareholders held on 25 June 2026.
Related previous disclosures13 May 2026: “Notice Regarding the Execution of a Share Exchange Agreement (Simplified Share Exchange) for the Conversion of KOEI CHEMICAL COMPANY,LIMITED into a Wholly Owned Subsidiary by SUMITOMO CHEMICAL COMPANY,LIMITED”
Future plansOur common shares will be delisted from the Tokyo Stock Exchange Standard Market effective 30 July 2026.
Items this document does not state (5)
Period CoveredAmountQuantity / scaleImpact on Business PerformanceGoverning Rule

These are items the company does not state in this document. We do not leave them blank, nor fill them in from other sources or by inference.

The reasons the company gives

The company's own explanation, not something inferred from the numbers.

The proposal concerning the share exchange agreement under which SUMITOMO CHEMICAL COMPANY,LIMITED will become the wholly owning parent company and KOEI CHEMICAL COMPANY,LIMITED will become the wholly owned subsidiary was approved as proposed at the Annual General Meeting of Shareholders held on 25 June 2026.

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Corrections happenIf the company reissues this disclosure, the page is rebuilt from the corrected version and the revision number moves up.
Notice Regarding the Delisting of Our Shares | KOEI CHEMICAL COMPANY,LIMITED (4367) timely disclosure | Komori