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Occurring Fact5713Sumitomo Metal Mining Co.,Ltd.Iron and Steel, Nonferrous Metals

Notice Regarding the Recognition of an Impairment Loss

At consolidated subsidiary Coral Bay Nickel Corporation, an impairment loss of ¥42,553 million was recognized in cost of sales because the recoverable amount of property, plant and equipment fell below its carrying amount.

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Deterioration
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Scale
42553
million yen
Wording
Definitive
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Recognition of impairment losses

Subject Entity

Coral Bay Nickel Corporation (Coral Bay Nickel Corporation, Philippines)

Target Locations / Products

Nickel smelting business in the Philippines

Occurrence1 April 2026 to 30 September 2026 (interim consolidated accounting period of the fiscal year ending March 2027). No specific date is stated.
This disclosure11/10/2026
Cause

The increase in the carrying amount of property, plant and equipment resulting from a change in the estimate for asset retirement obligations based on the current business plan, persistently weak nickel and cobalt prices, higher production costs, and declining ore quality.

Amount of Impact on Business Performance

An impairment loss of ¥42,553 million was recognized in cost of sales. The carrying amount of property, plant and equipment of ¥41,984 million was reduced to its recoverable amount.

Accounting period in which recognized

The interim consolidated accounting period of the fiscal year ending March 2027 (1 April 2026 to 30 September 2026)

Outlook

Production is also expected to end during the period covered by the next medium-term management plan, Medium-Term Management Plan 2030 (fiscal 2028 to fiscal 2030).

Event that occurred
ItemDetails
Event nameRecognition of impairment losses
Date of occurrence1 April 2026 to 30 September 2026 (interim consolidated accounting period of the fiscal year ending March 2027). No specific date is stated.
Subject EntityCoral Bay Nickel Corporation (Coral Bay Nickel Corporation, Philippines)
Target Locations / ProductsNickel smelting business in the Philippines
CauseThe increase in the carrying amount of property, plant and equipment resulting from a change in the estimate for asset retirement obligations based on the current business plan, persistently weak nickel and cobalt prices, higher production costs, and declining ore quality.
Amount of Impact on Business PerformanceAn impairment loss of ¥42,553 million was recognized in cost of sales. The carrying amount of property, plant and equipment of ¥41,984 million was reduced to its recoverable amount.
Accounting period in which recognizedThe interim consolidated accounting period of the fiscal year ending March 2027 (1 April 2026 to 30 September 2026)
OutlookProduction is also expected to end during the period covered by the next medium-term management plan, Medium-Term Management Plan 2030 (fiscal 2028 to fiscal 2030).
Items this document does not state (17)
Date recognized / date notice receivedImpact 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' liabilityVoting rights ownership percentage before the changeVoting rights ownership percentage after the changePlanned 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.

In addition to the increase in the carrying amount of property, plant and equipment resulting from a change in the estimate for asset retirement obligations, the recoverable amount fell below the carrying amount after evaluating the economics in light of persistently weak nickel and cobalt prices, higher production costs and declining ore quality.

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Notice Regarding the Recognition of an Impairment Loss | Sumitomo Metal Mining Co.,Ltd. (5713) timely disclosure | Komori