ST Engineering Annual Report 2024

INDEPENDENT AUDITOR'S REPORT TO THE MEMBERS OF SINGAPORE TECHNOLOGIES ENGINEERING LTD Our Audit Approach As part of designing our audit, we determined materiality and assessed the risks of material misstatement in the accompanying financial statements. In particular, we considered where management made subjective judgements; for example, in respect of significant accounting estimates that involved making assumptions and considering future events that are inherently uncertain. As in all of our audits, we also addressed the risk of management override of internal controls, including among other matters consideration of whether there was evidence of bias that represented a risk of material misstatement due to fraud. Key Audit Matters Key audit matters are those matters that, in our professional judgement, were of most significance in our audit of the financial statements for the year ended 31 December 2024. These matters were addressed in the context of our audit of the financial statements as a whole, and in forming our opinion thereon, and we do not provide a separate opinion on these matters. Key Audit Matter How our audit addressed the Key Audit Matter Impairment assessment of non-financial assets – goodwill Refer to Note C3 to the financial statements. As at 31 December 2024, the carrying value of the Group’s goodwill amounted to $3,147,820,000. Goodwill is allocated to the Group’s cash generating units (“CGU”) – Aerostructure & Systems, Aerospace MRO, Smart Utilities & Infrastructure, Mobility (Rail & Road), Satcom, Specialty Vehicles, Robotics & Autonomous Systems, Mission Software & Services, Training & Simulation Systems, Advanced Networks & Sensors, and Defence Aerospace. There is a risk of impairment of certain CGUs in the United States which are operating in a challenging business environment. In accordance with SFRS(I) 1-36, management is required to perform an impairment assessment of goodwill annually by comparing the recoverable amount of the CGU with its carrying amount to determine whether there is any impairment loss. For the purpose of impairment testing, the recoverable amount of the CGU is determined based on the value-in-use calculations, using cash flow projections. We focused on this area because of the significant judgements required in estimating the revenue growth rate, gross profit margins, discount rate and terminal growth rate applied in computing the recoverable amount of the CGU. We have assessed the appropriateness of management’s identification of CGU and critically assessed the key assumptions used in the goodwill impairment assessment. Our audit procedures included the following: • evaluated management’s key assumptions relating to revenue growth rates, gross profit margins, discount rates and terminal growth rates and understood how management has considered the impact of the market uncertainty in their estimates. • reviewed the basis and methodology used to derive the recoverable amount of the CGU. • assessed the appropriateness of management’s assumptions by comparing to past historical performance and considering current developments. • performed sensitivity analysis on management’s assumptions relating to revenue growth rates, gross profit margins, discount rates and terminal growth rates. • involved our valuation experts to evaluate the appropriateness of management’s assumptions, relating to terminal growth rates and discount rates, by developing an independent expectation using economic and industry forecasts and rates of comparable companies with consideration for specific jurisdiction factors. • considered the adequacy of the disclosures in the financial statements. Based on the audit procedures performed above, we found management’s judgement and assumptions in relation to the determination of the recoverable amount to be appropriate, and the disclosure in this respect to be adequate. 123 CORPORATE OVERVIEW PERFORMANCE REVIEW SUSTAINABILITY FINANCIAL REPORT

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