ST Engineering Sustainability Report 2024

ABOUT THE REPORT • This Sustainability Report focuses on the sustainability strategy, practices, priorities, targets and performance of our operations across key markets during the financial year ended 31 December 2024. • Unless otherwise stated, this Report covers all material subsidiaries under the Group. For data where there is a qualification on the coverage, ST Engineering is progressively expanding the coverage to all businesses over time. • This Report is approved by the Board and prepared with reference to Global Reporting Index (GRI) Standards, Singapore Exchange Limited (SGX) Listing Rules 711A, 711B and Practice Note 7.6, Sustainability Accounting Standards Board (SASB) Standards – Aerospace and Defence, and the recommendations of the Task Force on Climate-related Financial Disclosures (TCFD). • ST Engineering adopts the GRI Standards as it is the most widely referenced sustainability reporting framework and it addresses areas that are of interest to our stakeholders. • SASB Standards focuses on the needs of investors and the Group adopts its disclosure requirements for Aerospace and Defence to provide our investors a clearer picture of our businesses. • ST Engineering is a signatory of the United Nations Global Compact (UNGC) and is committed to the Ten Principles. This Report supplements our Communication of Progress. • Stakeholders are advised to read the ST Engineering’s Annual Report 2024 for more information on the Group’s business and financial performance. OVERVIEW i About the Report 01 Assurance & Verification 01 List of Abbreviations 02 Sustainability Dashboard 03 Board Statement on Sustainability 04 Message from the Group President & CEO OUR SUSTAINABILITY APPROACH 06 Sustainability Framework 08 Material Stakeholders & Engagement 10 Materiality Assessment ECONOMIC 14 Economic Performance & Productivity 18 Technology & Innovation 22 Responsible & Resilient Supply Chain ENVIRONMENTAL 26 Environmental Protection 34 Sustainable Quality Products & Solutions SOCIAL 40 People Excellence 50 Total Workplace Safety & Health 58 Corporate Community Contributions GOVERNANCE 68 Ethical Business & Regulatory Compliance 72 Cybersecurity & Data Protection Feedback regarding the sustainability report can be sent to sustainability@stengg.com. CONTENTS ST ENGINEERING | SUSTAINABILITY REPORT 2024 i

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