Investor Presentaiton

Inflation impact on material and wages Largely mitigated by stringent cost measures and contract management Evolution of relevant cost items indexes Indexed, Quarterly evolution from 2019-2025, Base 100 as of 01/01/2019 Multi-disciplinary action plan 550 500 450 400 350 -Actual Forecast March 2023 1 Transport Price adjustment on new tenders mirroring cost increase Shanghai Containerised Freight Index Commercial contract pricing Energy 2 Weighted index by WB adjustment formulas Steel World HRC common steel 3 Reinforced selectivity for fix and firm price contracts Aluminium 250 200 150 100 World Aluminium Sheets Copper 4 Back-to-back with suppliers for fix and firm contracts World electrolytic copper US Wage US manufacturing salaries¹ 5 Long term planning and securing material supplies Europe Wage Europe mfg. salaries² 2019 2020 2021 2022 2023 2024 2025 2026 6 Application of stringent cost measures to mitigate headwinds 1. Forecasted data based on inflation rate in the US | 2. Eurostat labour cost index published quarterly | 3. US Producer Price Index by Industry: Semiconductors and Related Device Manufacturing Source: World Bank, Eikon Datastream, HSBC, Federal Reserve Economic Data, Oxford Economics, Oliver Wyman analysis © ALSTOM SA 2023. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use, alter or disclosure to third parties, without express written authorisation, is strictly prohibited. ALSTOM • 9

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