[Macronix] Announcement of the Company's Order for Machinery and Equipment

1. Name and nature of the subject matter (e.g., land located at XX Section, XX Subsection, North District, Taichung City):
Machinery and equipment
2. Date of occurrence of the event: 2026/4/17~2026/4/17
3. Date of Board of Directors' approval: Not applicable
4. Date of other approval:
Level of approval: Handled in accordance with the Company's regulations on approval authority
April 17, 2026
5. Quantity of trading units (e.g., XX square meters, equivalent to XX ping), price per unit, and total transaction amount:
Quantity of transaction: One batch; Total transaction amount: NT$2,473,166 thousand
6. Trading counterparty and its relationship with the Company (if the trading counterparty is a natural person and not a related party of the Company, the name may be exempt from disclosure):
Applied Materials South East Asia; Non-related party
7. Where the trading counterparty is a related party, the reasons for selecting the related party as the trading counterparty and the previous owner, the relationship between the previous owner, the Company, and the trading counterparty, the date of previous transfer, and the transfer amount shall also be announced:
Not applicable
8. Where the owner of the subject matter of the transaction has been a related party of the Company within the past five years, the acquisition and disposal dates, prices, and relationships between the related party and the Company at the time of the transaction shall also be announced:
Not applicable
9. Expected disposal profit (or loss) (not applicable to asset acquisition) (for deferred recognition, please list and explain the recognition status):
Not applicable
10. Delivery or payment terms (including payment period and amount), restrictive covenants in the contract, and other important stipulations:
Payment according to order terms
11. Method of deciding this transaction (e.g., bidding, price comparison, or price negotiation), reference basis for deciding the price, and decision-making unit:
Price comparison and negotiation; based on quotations provided by vendors and market conditions; handled in accordance with the Company's regulations on approval authority.
12. Name of the professional appraisal firm or company and its appraisal amount:
Not applicable
13. Name of the professional appraiser:
Not applicable
14. Professional appraiser's certificate number:
Not applicable
15. Whether the appraisal report is a limited price, specific price, or special price: No or Not applicable
16. Whether an appraisal report has not yet been obtained: No or Not applicable
17. Reason for not yet obtaining an appraisal report:
Not applicable
18. Reason for any significant discrepancy in the appraisal results and the CPA's opinion:
Not applicable
19. Name of the CPA firm:
Not applicable
20. Name of the CPA:
Not applicable
21. CPA certificate number:
Not applicable
22. Broker and brokerage fee:
Not applicable
23. Specific purpose or use of the acquisition or disposal:
For production
24. Opinions of dissenting directors regarding this transaction:
Not applicable
25. Whether this transaction is a related-party transaction: No
26. Date of acknowledgement by supervisors or approval by the Audit Committee:
Not applicable
27. Whether this transaction involves acquiring real estate or its right-of-use asset from a related party: No
28. Appraised price assessed in accordance with Article 16 of the "Regulations Governing the Acquisition and Disposal of Assets by Public Companies": Not applicable
29. Appraised price assessed in accordance with Article 17 of the same Regulations if the price assessed in the preceding item is lower than the transaction price: Not applicable
30. Date of previous major message announced for the same event: Not applicable
31. Other matters requiring statement:
None