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Statutory disclosure document6137KOIKE SANSO KOGYO CO.,LTD.Machinery

Notice Concerning the Submission of an Application for Approval to Extend the Filing Deadline for the Interim Securities Report for the Fiscal Year Ending March 2027

Because the interim securities report cannot be filed by the original deadline due to the impact of a cyberattack, the company has decided to submit to the Kanto Local Finance Bureau an application for approval to extend the filing deadline to 2 February 2027. The extension has not yet been approved.

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Decision and Details

Application for approval to extend the filing deadline for the interim securities report for the 104th period (fiscal year ending March 2027)

Decision13 November 2026
Period CoveredFrom 1 April 2026 through 30 September 2026
Implementation2 February 2027 (scheduled filing deadline if the extension is approved)
Going forwardIf the application is approved, the Company will promptly make a disclosure.
Reason

Because the cyberattack on 5 October 2026 resulted in measures being taken to block access to the accounting systems, making it impossible to perform the financial closing procedures

Impact on Business Performance

Delays have occurred in the financial closing procedures and the interim review procedures by the accounting auditor. The impact on results is not disclosed.

Decision and Details
ItemDetails
Matter CoveredApplication for approval to extend the filing deadline for the interim securities report for the 104th period (fiscal year ending March 2027)
Decision Date13 November 2026
Implementation Date2 February 2027 (scheduled filing deadline if the extension is approved)
Period CoveredFrom 1 April 2026 through 30 September 2026
Impact on Business PerformanceDelays have occurred in the financial closing procedures and the interim review procedures by the accounting auditor. The impact on results is not disclosed.
ReasonBecause the cyberattack on 5 October 2026 resulted in measures being taken to block access to the accounting systems, making it impossible to perform the financial closing procedures
Governing RuleArticle 18-2, Paragraph 1 of the Cabinet Office Ordinance on Disclosure of Corporate Affairs, etc.
Related previous disclosures"Notice Concerning the Cyberattack on the Company," announced on 15 October 2026
Future plansIf the application is approved, the Company will promptly make a disclosure.
Items this document does not state (3)
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The reasons the company gives

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

The cyberattack on 5 October 2026 blocked access to the accounting systems, making it impossible to perform the financial closing procedures. Delays have occurred in system recovery, the financial closing procedures and the interim review procedures by the accounting auditor.

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Notice Concerning the Submission of an Application for Approval to Extend the Filing Deadline for the Interim Securities Report for the Fiscal Year Ending March 2027 | KOIKE SANSO KOGYO CO.,LTD. (6137) timely disclosure | Komori