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Occurring Fact4183Mitsui Chemicals,Inc.Materials and Chemicals

Regarding Certain Media Reports Concerning Our Company

Regarding reports that Mitsui Chemicals,Inc. would acquire JSR株式会社, Mitsui Chemicals,Inc. explained that the reports were not issued by the Company and that no decision to acquire JSR株式会社 had been made as of the present time. It acknowledged, however, that it was considering various options, including this matter, with the aim of enhancing corporate value.

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Regarding Certain Media Reports Concerning Our Company

Subject Entity

Mitsui Chemicals,Inc. (the Company), JSR株式会社 (the company reported as the acquisition target)

Occurrence4 November 2026 (the date on which reports referring to “today” appeared)
This disclosure11/04/2026
Cause

Reports by certain media outlets that the Company would acquire JSR株式会社

Outlook

The Company is considering various options, including this matter, with the aim of enhancing corporate value. No decision has been made as of the present time.

Event that occurred
ItemDetails
Event nameRegarding Certain Media Reports Concerning Our Company
Date of occurrence4 November 2026 (the date on which reports referring to “today” appeared)
Subject EntityMitsui Chemicals,Inc. (the Company), JSR株式会社 (the company reported as the acquisition target)
CauseReports by certain media outlets that the Company would acquire JSR株式会社
OutlookThe Company is considering various options, including this matter, with the aim of enhancing corporate value. No decision has been made as of the present time.
Items this document does not state (20)
Date recognized / date notice receivedTarget Locations / ProductsAmount of Impact on Business PerformanceAccounting period in which recognizedImpact on Earnings ForecastType of litigation or proceedingCourt or authorityPlaintiffDefendantDate of filing / date of actionClaim amount / surcharge amountAmount of receivables at risk of non-collection or delayed collectionSuspended operationsScheduled resumption dateInvestigation structureMeasures to prevent recurrenceDirectors' and officers' liabilityVoting rights ownership percentage before the changeVoting rights ownership percentage after the changePlanned follow-up disclosure

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.

Because the Company is considering various options, including this matter, with the aim of enhancing corporate value.

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This is not the documentKomori reads the disclosure the company filed and writes this summary. Figures are as stated by the company and are not audited.
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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.
Regarding Certain Media Reports Concerning Our Company | Mitsui Chemicals,Inc. (4183) timely disclosure | Komori