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Occurring Fact5408NAKAYAMA STEEL WORKS,LTD.Iron and nonferrous metals

Notice and Apology Regarding a Fire at the Hot-Rolling Mill

A fire broke out at the hot-rolling mill at the Funamachi Plant on 12 September 2026, partially damaging power cables for the heating furnace equipment and other facilities. Operations at the hot-rolling mill have been suspended as a result, while the downstream lines are operating normally.

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Fire at the Hot-Rolling Mill

Subject Entity

NAKAYAMA STEEL WORKS,LTD. (the filing company)

Target Locations / Products

The hot-rolling mill premises at the Funamachi Plant (Funamachi, Taisho-ku, Osaka)

OccurrenceAround 2:50 a.m. on 12 September 2026 (Saturday) (fire extinguished at 3:20 a.m.)
This disclosure09/16/2026
Impact on Earnings Forecast

The company will promptly disclose any prospects for restoration or other matters requiring disclosure once they become known, or if a material impact on business performance is expected.

Company response

Suspended operations

Operations at the Company's hot-rolling mill

Outlook

Procurement arrangements for the damaged cables are generally in place, but confirming the condition of the heating furnace equipment and other facilities is expected to take some time. The company will promptly disclose any prospects for restoration or other matters requiring disclosure once they become known, or if a material impact on business performance is expected.

Event that occurred
ItemDetails
Event nameFire at the Hot-Rolling Mill
Date of occurrenceAround 2:50 a.m. on 12 September 2026 (Saturday) (fire extinguished at 3:20 a.m.)
Subject EntityNAKAYAMA STEEL WORKS,LTD. (the filing company)
Target Locations / ProductsThe hot-rolling mill premises at the Funamachi Plant (Funamachi, Taisho-ku, Osaka)
Impact on Earnings ForecastThe company will promptly disclose any prospects for restoration or other matters requiring disclosure once they become known, or if a material impact on business performance is expected.
Suspended operationsOperations at the Company's hot-rolling mill
OutlookProcurement arrangements for the damaged cables are generally in place, but confirming the condition of the heating furnace equipment and other facilities is expected to take some time. The company will promptly disclose any prospects for restoration or other matters requiring disclosure once they become known, or if a material impact on business performance is expected.
Planned follow-up disclosureThe company will promptly disclose any prospects for restoration or other matters requiring disclosure once they become known, or if a material impact on business performance is expected.
Items this document does not state (17)
Date recognized / date notice receivedCauseAmount of Impact on Business PerformanceAccounting period in which recognizedType of litigation or proceedingCourt or authorityPlaintiffDefendantDate of filing / date of actionClaim amount / surcharge amountAmount of receivables at risk of non-collection or delayed collectionScheduled resumption dateInvestigation structureMeasures to prevent recurrenceDirectors' and officers' liabilityVoting rights ownership percentage before the changeVoting rights ownership percentage after the change

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.

The cause of the fire and other details are currently under investigation, and the specific cause has not been disclosed.

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 and Apology Regarding a Fire at the Hot-Rolling Mill | NAKAYAMA STEEL WORKS,LTD. (5408) timely disclosure | Komori