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M&A and Subsidiary Changes5711Mitsubishi Materials CorporationIron & Steel, Nonferrous Metals

(Progress on Disclosed Matters) Establishment of a Successor Company for the Business of Purchasing Copper Concentrate and Selling Electrolytic Copper and Other Products

A new company, PPCマテリアル株式会社, which will take over the business of purchasing copper concentrates and selling electrolytic copper and other products, was established on 1 July 2026, and its representative director and president was appointed. The representative is scheduled to change after the effective date of this integration.

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This transaction

The Integration
CounterpartyPan Pacific Copper Co., Ltd.
Disclosing companyMitsubishi Materials Corporation
PPCマテリアル株式会社Subject of this transaction
Target company

Purchasing copper concentrates Contract manufacturing and sale of electrolytic copper, sulfuric acid, precious metals and other copper-smelting by-products

Location Chiyoda-ku, TokyoShare capital ¥1Date of incorporation 1 July 2026
Procedures and assumptions
Management structure after acquisitionThe representative director and president is Toyama Naoyuki (外山 尚幸). The representative is scheduled to change after the effective date of this integration.
This transaction
ItemDetails
Transaction nameThe Integration
Counterparty namePan Pacific Copper Co., Ltd.
Name of the Subject CompanyPPCマテリアル株式会社
Business Description of the Subject CompanyPurchasing copper concentrates Contract manufacturing and sale of electrolytic copper, sulfuric acid, precious metals and other copper-smelting by-products
Location of the Subject CompanyChiyoda-ku, Tokyo
Capital Stock of the Subject Company¥1
Date of Establishment of the Subject Company1 July 2026
Management structure after acquisitionThe representative director and president is Toyama Naoyuki (外山 尚幸). The representative is scheduled to change after the effective date of this integration.
Items this document does not state (24)
Net 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 resolutionContract DateExecution Date / Effective DateValuation methodologyIndependent valuation institutionSpecial CommitteeConditions Precedent to Execution

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.

In connection with the integration announced on 28 May 2026, the Company will transfer its business of purchasing copper concentrates and selling electrolytic copper, sulfuric acid and other products to PPC and the successor company to be established by PPC through an absorption-type company split.

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(Progress on Disclosed Matters) Establishment of a Successor Company for the Business of Purchasing Copper Concentrate and Selling Electrolytic Copper and Other Products | Mitsubishi Materials Corporation (5711) timely disclosure | Komori