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M&A and Subsidiary Changes4183Mitsui Chemicals,Inc.Materials and Chemicals

(Progress on Disclosed Matters) Notice of Completion of the Acquisition Procedures for Ultradent in the United States

The acquisition procedures for Ultradent Products, Inc. of the United States were completed on 14 August 2026 (local time). Completion was brought forward from the originally scheduled September date because the required regulatory approvals and filings under competition and investment regulation laws were completed earlier than expected.

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This transaction

The acquisition
Counterparty (target company)Ultradent Products, inc.
Disclosing companyMitsui Chemicals,Inc.
Subject of this transaction
Execution Date / Effective Date14 August 2026 (local time; completed)
Target company
Location United States
Impact on Business Performance

Currently under review. If any matter requiring disclosure arises, it will be disclosed promptly.

Procedures and assumptions
Conditions Precedent to ExecutionRequired regulatory approvals and filings under competition and investment regulation laws
Management structure after acquisitionThe global headquarters functions of the oral care business will be transferred from Japan to a U.S. holding company.
This transaction
ItemDetails
Transaction nameThe acquisition
Counterparty nameUltradent Products, inc.
Name of the Subject CompanyUltradent Products, inc.
Location of the Subject CompanyUnited States
Impact on Business PerformanceCurrently under review. If any matter requiring disclosure arises, it will be disclosed promptly.
Execution Date / Effective Date14 August 2026 (local time; completed)
Conditions Precedent to ExecutionRequired regulatory approvals and filings under competition and investment regulation laws
Management structure after acquisitionThe global headquarters functions of the oral care business will be transferred from Japan to a U.S. holding company.
Items this document does not state (24)
Business Description of the Subject CompanyCapital Stock of the Subject CompanyDate of Establishment of the Subject CompanyNet Sales of the Subject CompanyOperating Profit of the Subject CompanyNet Income of the Subject CompanyNet Assets of the Subject CompanyAcquisition priceExpenses other than the acquisition priceType of ConsiderationMerger ratio/share exchange ratioTender offer priceMinimum number of shares to be purchasedTender offer periodNumber of shares acquiredVoting rights ownership percentageFunding arrangementsGoodwill amountAmount of extraordinary income (loss)Date of board resolutionContract DateValuation methodologyIndependent valuation institutionSpecial Committee

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 required regulatory approvals and filings under competition and investment regulation laws were completed earlier than expected. Following the acquisition, the company plans to transfer the global headquarters functions of its oral care business from Japan to a U.S. holding company, with the aim of maximizing integration benefits across the group and becoming a leading company in the oral care field.

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(Progress on Disclosed Matters) Notice of Completion of the Acquisition Procedures for Ultradent in the United States | Mitsui Chemicals,Inc. (4183) timely disclosure | Komori