Komori
M&A and Subsidiary Changes1776SUMIKEN MITSUI ROAD CO., LTD.Construction and Materials

Notice of Change of Corporate Name

三井住建道路株式会社 plans to change its corporate name to “アルソシア道路株式会社” effective 1 October 2026, subject to approval of the amendment to its Articles of Incorporation at the Annual General Meeting of Shareholders.

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This transaction

Corporate Name Change
CounterpartySumitomo Mitsui Construction Co., Ltd.
Disclosing company三井住建道路
Mitsui Sumiken Road Co., Ltd.Subject of this transaction
TimelineThe spacing between the points is proportional to the actual number of days.
Procedures and assumptions
Conditions Precedent to ExecutionSubject to submitting the matter to the Annual General Meeting of Shareholders and obtaining approval for the partial amendment to the Articles of Incorporation.
Management structure after acquisitionThe new corporate name will be アルソシア道路株式会社 (English name: ARSOCIA ROAD CO., LTD.). The company plans to operate as a member of the Sumitomo Mitsui Construction Group.
This transaction
ItemDetails
Transaction nameCorporate Name Change
Counterparty nameSumitomo Mitsui Construction Co., Ltd.
Name of the Subject CompanyMitsui Sumiken Road Co., Ltd.
Date of board resolution12 May 2026
Execution Date / Effective Date1 October 2026 (scheduled)
Conditions Precedent to ExecutionSubject to submitting the matter to the Annual General Meeting of Shareholders and obtaining approval for the partial amendment to the Articles of Incorporation.
Management structure after acquisitionThe new corporate name will be アルソシア道路株式会社 (English name: ARSOCIA ROAD CO., LTD.). The company plans to operate as a member of the Sumitomo Mitsui Construction Group.
Items this document does not state (25)
Business Description of the Subject CompanyLocation 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 PerformanceContract 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.

To further strengthen the brand image and pursue sustained enhancement of corporate value while operating as a member of the Sumitomo Mitsui Construction Group.

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Notice of Change of Corporate Name | 三井住建道路 (1776) timely disclosure | Komori