Supply contract signed

What happened

Single sales/supply contract executed

1. Sales/supply contract details Supply contract for microdisplays for optical communication

2. Contract details Conditional contract: not applicable Confirmed contract amount: 1,500,385,000 Conditional contract amount: - Total contract amount (KRW): 1,500,385,000 Recent sales (KRW): 8,746,267,801 Percentage of sales: 17.15

3. Counterparty - - - Recent sales (KRW): - - Main business: - - Relationship with the Company: - - Performance of similar contracts with the Company in the last 3 years: applicable

4. Sales/supply region: overseas

5. Contract term Start date: 2026-08-31 End date: 2027-07-31

6. Key contract terms Down payment/advance payment: no Payment terms, etc.: paid in advance 6 months before delivery

7. Sales/supply method In-house production: not applicable Outsourced production: applicable Other: -

8. Contract (order) date: 2026-08-31

9. Matters relating to disclosure deferral Deferral deadline: - Reason for deferral: at the counterparty's request to protect its trade secrets

10. Other matters for reference in investment decisions - The "confirmed contract amount" in "2. Contract details" above is USD 1,090,000, converted using the first-quoted trading-base exchange rate from the Seoul Money Brokerage Services on the PO receipt date of August 31, 2026 (USD/KRW 1,376.50). - "Recent sales" in "2. Contract details" above is based on the Company's financial statements for the most recent fiscal year end (2025). - The "contract (order) date" in "8." above is the date the Purchase Order was received. - The contract term end date above is based on the last day of the final expected delivery month, and may change by agreement between the two parties. - Because the main contents of the contract are withheld at the counterparty's request to protect its trade secrets, investors are advised to invest carefully, taking into account the possibility of changes to or termination of the contract. - The above contract amount, contract term, and other contract terms may change through future discussions between the two parties.

Related disclosures: -