[Amended] Supply contract signed

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Hanwha Engine / Supply Contract Signed / (2026.07.08) Supply Contract Signed

Amendment Report Amendment date: 2026-07-08 1. Disclosure document being amended: Supply Contract Signed 2. Filing date of the document being amended: 2026-07-08 3. Reason for amendment: Amendment of the contract amount and contract period following execution of an amended contract 4. Amended items (item / before amendment / after amendment) - Contract details - Contract amount (KRW): before 433,988,522,000; after 479,785,570,000 - Contract details - As % of sales: before 36.1%; after 39.9% - Contract period - End date: before 2029-06-12; after 2029-09-27

9. Other important matters relevant to investment decisions (as amended) 1. The counterparty and contract details will be disclosed by amendment upon release of, or expiry of, the withholding reason. 2. The most recent sales figure in item 2 above is based on the separate financial statements as of the end of 2024. 3. The contract amount in item 2 above is calculated using the basic exchange rate on the contract execution date (KRW 1,464.10/USD). 4. The contract period in item 5 above may change depending on the progress of the vessel construction schedule. 5. The amended contract related to this amendment disclosure was executed on July 8, 2026.

- Supply Contract Signed (full content as amended) 1. Type of supply contract: Other supply contract - Contract name: Marine engines 2. Contract details Contract amount (KRW): 479,785,570,000 Most recent sales (KRW): 1,202,204,707,511 As % of sales: 39.9% Large company status: Not applicable 3. Counterparty: -; Relationship with the company: - 4. Sales/supply region: Asia 5. Contract period: start date 2026-01-13; end date 2029-09-27 6. Key contract terms: Down payment/advance payment: Yes; Payment terms, etc.: advance payment 20%, balance 80% 7. Contract (order) date: 2026-01-13 8. Disclosure withholding details: Reason for withholding: Business confidentiality; Withholding deadline: 2027-01-14 9. Other important matters relevant to investment decisions: (same five items as listed above)

Related disclosures: 2026-01-14 Supply contract signed