PTSC is pleased to announce that its Board of Directors has approved the appointment of Ms. Janet Hsueh as the new General Manager of the Company. Janet’s leadership is expected to bring renewed strategic momentum and broaden PTSC’s vision for the future.

With more than 30 years of extensive experience in the technology industry, Janet has held key management positions at IBM, spanning business development, marketing strategy, go-to-market execution, international collaboration, and ecosystem partnerships. She is recognized for her ability to combine strategic thinking with strong cross-functional leadership, transforming business needs, product value, and market dynamics into actionable strategies. Janet has successfully led teams to achieve both growth and innovation across multiple markets.

After joining PTSC, Janet will leverage her cross-domain insights and hands-on leadership experience to advance the Company’s enterprise service offerings, enhance the implementation quality of AI and digital solutions, elevate customer experience, and continue expanding PTSC’s partner ecosystem. Her appointment marks an important milestone as PTSC moves into the next stage of development.

PTSC has long been committed to serving the enterprise IT market, providing comprehensive solutions including AI applications, cybersecurity, data resilience architecture, cloud integration, enterprise platform development, and IT professional services. Guided by the principle “Power The Smart Changes,” PTSC is dedicated to helping enterprises grow amid rapid digital transformation. With Janet joining the leadership team, PTSC will continue building upon the solid foundation to achieve new milestones together with our clients and partners.

Newly Appointed General Manager of PTSC — Ms. Janet Hsueh

No.	1	Date of Announcement	November 19, 2025	Time of Announcement	17:44:25
Spokesperson	Alex Wang	Spokesperson’s title	Vice General Manager	Telephone	+886 2 2658 1910
Subject	Announcement of Change in the Company’s General President
Applicable Regulation	Article 6	Date of Event	November 19, 2025
Description	1. Date of Board Resolution or Date of Change: November 19, 2025 2. Position (Chairman or General President): General President 3. Name of Former Incumbent: Yang, Ming-Hui 4. Résumé of Former Incumbent: General President of the Company 5. Name of New Incumbent: Hsueh, Shu-Ching 6. Résumé of New Incumbent: Marketing Director, Technology & Consulting Services, IBM Greater China 7. Type of Change (Resignation, Dismissal, Term Expiration, Position Adjustment, Layoff, Retirement, Decease, or New Appointment): Position Adjustment 8. Reason for Change: To meet the Company’s operational development needs. 9. Effective Date of the New Appointment: November 20, 2025 10. Other Matters to be Stated: None. (If the entity involved in the event or resolution is a publicly listed company, this material information also complies with Article 7, Paragraph 6 of the Securities and Exchange Act Enforcement Rules regarding matters that may have a significant impact on shareholders’ equity or the securities price.)

Further details are available on the Market Observation Post System (MOPS).