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Other Disclosures6137KOIKE SANSO KOGYO CO.,LTD.Machinery

(Correction) Partial correction to the "Notice Regarding the Cyberattack Against Our Company"

The descriptions concerning the impact of the cyberattack on consolidated results and the impact on the announcement schedule for the second-quarter results were switched. The impact on results was described as “minor,” while the results announcement schedule was stated to be under review.

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The document this correction applies to

Timely disclosure
Notice Regarding a Cyberattack on the Company2026-10-15

What was corrected and how

A subsequent correction by the company to the contents of an already published filing.

Original disclosure15 October 2026

Notice Regarding a Cyberattack on the Company

Open the original document
Corrected on the same dayCorrected on the same day as the original document (Calculated from the Original Disclosure Date Indicated in the Document)
This correction2026-10-15
Location of correction (where in the original document)

3. Impact on Results, etc.

Before correction

Regarding the impact of this matter on consolidated results, the company will promptly disclose any matters that should be disclosed if they become known. The impact on the announcement schedule for the second-quarter results for the fiscal year ending March 2027 is minor.

After correction

The impact of this matter on consolidated results is minor. The impact on the announcement schedule for the second-quarter results for the fiscal year ending March 2027 is currently under review.

ChangesCorrection to the descriptions concerning the impact on consolidated results and the impact on the results announcement schedule
Impact on Business Performance (the company’s explanation)

The impact of this matter on consolidated results is minor.

Reason for correction

Because the content stated in “3. Impact on Results, etc.” contained an error.

What was corrected and how
ItemDetails
Disclosure subject to correctionNotice Regarding a Cyberattack on the Company
Original disclosure date15 October 2026
Location of correction3. Impact on Results, etc.
Details of correctionRegarding the impact of this matter on consolidated results, the company will promptly disclose any matters that should be disclosed if they become known. The impact on the announcement schedule for the second-quarter results for the fiscal year ending March 2027 is minor. → The impact of this matter on consolidated results is minor. The impact on the announcement schedule for the second-quarter results for the fiscal year ending March 2027 is currently under review.
Reason for correctionBecause the content stated in “3. Impact on Results, etc.” contained an error.
Impact on Business PerformanceThe impact of this matter on consolidated results is minor.

The reasons the company gives

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

Because the content stated in “3. Impact on Results, etc.” contained an error.

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.
(Correction) Partial correction to the "Notice Regarding the Cyberattack Against Our Company" | KOIKE SANSO KOGYO CO.,LTD. (6137) timely disclosure | Komori