Komori
Occurring Fact1786Oriental Shiraishi CorporationConstruction and Materials

Notice Regarding a Change in Other Affiliated Company

ITOCHU Corporation acquired shares of Oriental Shiraishi Corporation, increasing its percentage of voting rights held from 19.20% to 20.03%. As a result, ITOCHU Corporation became an other affiliated company of Oriental Shiraishi Corporation.

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1078200
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Change in Other Affiliated Company

Subject Entity

Oriental Shiraishi Corporation, ITOCHU Corporation

Occurrence2 July 2026
Same day
Awareness or receipt of notice2 July 2026 (the date on which the report of the share acquisition was received from ITOCHU Corporation)
This disclosure07/02/2026
Cause

ITOCHU Corporation acquired 1,078,200 of our common shares, increasing its percentage of voting rights held in our company to at least 20%.

Change in voting rights ownership ratio

As of 31 March 202619.20%→20.03%(+0.83pt)

The voting rights ownership percentage is the proportion of the voting rights exercisable at a shareholders' meeting held by the shareholder.

Voting rights ownership percentage before the change

As of 31 March 2026: 249,529 voting rights (24,952,964 shares), 19.20%

Voting rights ownership percentage after the change

As of 2 July 2026: 260,311 voting rights (26,031,164 shares), 20.03%

Outlook

We will continue to expand and deepen our collaboration with ITOCHU Corporation to achieve sustainable improvements in corporate value over the medium to long term.

Event that occurred
ItemDetails
Event nameChange in Other Affiliated Company
Date of occurrence2 July 2026
Date recognized / date notice received2 July 2026 (the date on which the report of the share acquisition was received from ITOCHU Corporation)
Subject EntityOriental Shiraishi Corporation, ITOCHU Corporation
CauseITOCHU Corporation acquired 1,078,200 of our common shares, increasing its percentage of voting rights held in our company to at least 20%.
Voting rights ownership percentage before the changeAs of 31 March 2026: 249,529 voting rights (24,952,964 shares), 19.20%
Voting rights ownership percentage after the changeAs of 2 July 2026: 260,311 voting rights (26,031,164 shares), 20.03%
OutlookWe will continue to expand and deepen our collaboration with ITOCHU Corporation to achieve sustainable improvements in corporate value over the medium to long term.
Items this document does not state (17)
Target 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' liabilityPlanned 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.

We received a report from ITOCHU Corporation that it had acquired 1,078,200 of our common shares and confirmed that its percentage of voting rights held in our company was at least 20%.

How to read this page

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.
Weight is not a verdictIt measures how much this changes what the company had already told the market. It is not a view on the shares.
Corrections happenIf the company reissues this disclosure, the page is rebuilt from the corrected version and the revision number moves up.
Notice Regarding a Change in Other Affiliated Company | Oriental Shiraishi Corporation (1786) timely disclosure | Komori