First Half 2021 Financial Results

2021-2023 Financial Trajectory of Core Business ΚΡΙ Average Book-to-bill (x) Range Revenues(2) (€bn) 2021 6.5 7.2 EBITDA Margin % -8% Net Debt (€m) >1.0(1) 100-130m 2023 7.4 H 8.3 >8.5% (500) (300) Annual reduction H (300) (40) H These targets may be susceptible to change as a result of the unpredictable nature of the COVID-19 pandemic (1) Excluding Texas HSR First Half 2021 Financial Results (2) Starting from 2023 include Texas HSR start-up, that is expected to go at full speed in 2024 (ca. 6 years expected timing for project completion) 18 webuild

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