[Amended] Supply contract signed

What happened

Samsung E&A / Supply Contract Signed / (2026.09.30) Supply Contract Signed

Amendment Report Amendment date: 2026-09-30

1. Disclosure document being amended: Supply Contract Signed 2. Filing date of the disclosure document being amended: 2026-07-01 3. Reason for amendment: Amendment of the non-disclosure deadline

4. Amendment details Item: Before amendment -> After amendment 8. Non-disclosure details - 3. Non-disclosure deadline: 2026-09-30 -> 2026-11-30

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Supply Contract Signed

1. Type of sales/supply contract: Construction order - Contract name: -

2. Contract details: Contract amount (KRW): 380,838,972,851; Most recent revenue (KRW): 9,028,769,083,650; Ratio to revenue (%): 4.22; Whether a large corporation: Applicable

3. Counterparty: -; Relationship with the company: -

4. Sales/supply region: Middle East

5. Contract period: Start date -; End date -

6. Key contract terms: Down payment/advance payment: Yes; Payment terms: -

7. Contract (order) date: 2026-06-30

8. Non-disclosure details: Reason for non-disclosure: Maintenance of business confidentiality; Non-disclosure deadline: 2026-11-30

9. Other matters important to investment judgment: - The above contract amount in item 2 is converted from USD 247,057,394 using the initial basic exchange rate of 1,541.50 as of June 30, 2026. - The above contract amount in item 2 is the portion contracted by the head office; together with the overseas subsidiary's contracted portion of approximately USD 540 million, the Company secured a water treatment project worth a total of approximately USD 790 million. - The contract name, counterparty, contract period, and key contract terms will be disclosed at a later date at the project owner's request to maintain confidentiality. - The revenue and large-corporation status in item 2 above are based on the consolidated financial statements as of the end of 2025. - The contract period, contract amount, etc. may change in the course of project execution.

Related disclosures: 2026-07-01 Supply Contract Signed