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M&A and Subsidiary Changes5019Idemitsu Kosan Co.,Ltd.Energy Resources

Regarding the Japan Fair Trade Commission's review of the integration of the domestic polyolefin business

We received notification from the Japan Fair Trade Commission that it would not issue a cease-and-desist order regarding the integration of Prime Polymer's and SUMITOMO CHEMICAL COMPANY,LIMITED's domestic PP and LLDPE businesses. However, reviews by competition authorities outside Japan are still ongoing, and the business integration has not yet been completed.

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This transaction

This business integration
CounterpartySUMITOMO CHEMICAL COMPANY,LIMITED
Disclosing companyIdemitsu Kosan Co.,Ltd.
Subject of this transaction
Contract Date24 December 2025
Execution Date / Effective DateAfter the completion of merger reviews by competition authorities outside Japan (予定)
Target company

SUMITOMO CHEMICAL COMPANY,LIMITED's domestic PP and LLDPE businesses

Location Japan
Procedures and assumptions
Conditions Precedent to ExecutionScheduled to be completed after the completion of merger reviews by competition authorities outside Japan
This transaction
ItemDetails
Transaction nameThis business integration
Counterparty nameSUMITOMO CHEMICAL COMPANY,LIMITED
Business Description of the Subject CompanySUMITOMO CHEMICAL COMPANY,LIMITED's domestic PP and LLDPE businesses
Location of the Subject CompanyJapan
Contract Date24 December 2025
Execution Date / Effective DateAfter the completion of merger reviews by competition authorities outside Japan (予定)
Conditions Precedent to ExecutionScheduled to be completed after the completion of merger reviews by competition authorities outside Japan
Items this document does not state (25)
Name 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)Impact on Business PerformanceDate of board resolutionValuation methodologyIndependent valuation institutionSpecial CommitteeManagement structure after acquisition

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The reasons the company gives

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

Mitsui Chemicals, Idemitsu Kosan and SUMITOMO CHEMICAL COMPANY,LIMITED are pursuing this business integration to establish resilient essential businesses that support Japanese industry and strengthen the competitiveness of the domestic polyolefin business.

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Regarding the Japan Fair Trade Commission's review of the integration of the domestic polyolefin business | Idemitsu Kosan Co.,Ltd. (5019) timely disclosure | Komori