Taiwan Steel Union Announces Consolidated Financial Results for June 2026

1. Date of Event: July 6, 2026

2. Company Name: Taiwan Steel Union Co., Ltd.

3. Relationship to Company (please enter 'Company' or 'Subsidiary'): Company

4. Cross-shareholding Ratio: Not applicable

5. Reason for Announcement:

(Unit: Thousand New Taiwan Dollars)

June 2026 June 2025 Jan-Jun 2026 Jan-Jun 2025 Consolidated Net Revenue 195,992 120,314 1,282,106 1,131,684 Consolidated Self-Computed Operating Income 92,341 43,109 614,773 455,686 Consolidated Self-Computed Pre-Tax Income 94,186 43,875 610,293 437,831 These figures represent the company's consolidated self-computed results and have not yet been audited by an accountant.

The company's revenue primarily consists of income from the sale of zinc oxide and income from the recycling of customer waste materials, with the latter recognized based on actual reuse volume. The following table shows zinc oxide shipment volumes, with revenue recognition conducted in accordance with the Financial Reporting Standards for Securities Issuers:

2026 2025 June Shipment Volume (tons) 1,442 2,087 Jan-Jun Shipment Volume (tons) 22,098 24,580

The company's self-computed revenue for June 2026 was announced on the Public Information Observation Station on July 6, 2026.

6. Response Measures: Not applicable.

7. Other Matters to be Disclosed (if the entity involved in the event or resolution is a publicly issued company or above, this significant information also qualifies as a matter under Article 7, Clause 9 of the Enforcement Rules of the Securities Trading Act that significantly affects shareholders' rights or securities prices): None.

Keywords: Significant Information