2601 Yihang Announces Trading Alert Due to Market Criteria

Release Date: July 9, 115 (2026) Statement Date: July 8, 115 (2026) Statement Time: 16:54:51 Company Code: 2601 Company Name: Yihang Subject: The company's securities have reached the announcement threshold for trading information on the centralized market; therefore, relevant information is disclosed to assist investor understanding.

Applicable Clause: Item 51 Factual Date: July 8, 115 (2026)

Explanation: 1. Factual Date: 07/08/115 (2026) 2. Reason for Occurrence: 07/08/115 (2026) 3. Financial and Business Information:

(1) Monthly Most Recent Month Year-over-Year May 115 (2026) Change % (IFRS Self-compiled) Revenue (in million NT$) 137 5.81% Pre-tax Net Profit (in million NT$) 6 -67.77% Net Profit Attributable to Parent (in million NT$) 8 167.26% Earnings Per Share (NT$) 0.01 167.26%

(2) Quarterly Most Recent Quarter Year-over-Year Q1 115 (2026) Change % (Consolidated Reviewed Figures) (IFRS Auditor-Reviewed) Revenue (in million NT$) 568 56.56% Pre-tax Net Profit (in million NT$) 18 153.37% Net Profit Attributable to Parent (in million NT$) -14 89.43% Earnings Per Share (NT$) -0.02 50.00%

(3) Last Four Quarters Cumulative Last Four Quarters Cumulative (Q2 114 to Q1 115) (Consolidated Reviewed Figures) (IFRS Auditor-Reviewed) Revenue (in million NT$) 1,695 Pre-tax Net Profit (in million NT$) -33 Net Profit Attributable to Parent (in million NT$) -1,227 Earnings Per Share (NT$) -0.06

4. Whether there is any material information event under Article 4 of the 'Taiwan Stock Exchange Corporation Procedures for Verification and Public Disclosure of Material Information for Listed Companies': No. 5. Whether there is any material information press conference event under Article 11 of the same procedures: No. 6. Complete financial information is available on the Public Information Observation Station. Access paths: (1) Recent operating revenue and profit/loss: Basic Information > Highlights (2) Historical monthly revenue: Operations Overview > Monthly Revenue > Monthly Revenue Information after IFRS adoption (3) Historical profit/loss (auditor-reviewed/reviewed figures): Financial Statements > After IFRS adoption > Consolidated/Individual > Comprehensive Income Statement (4) Historical profit/loss (voluntary self-compiled announcements): Operations Overview > Self-compiled Profit/Loss Announcements 7. Other Matters to be Disclosed: None.