Annual Activity Report 2025

SUSTAINABILITY STATEMENT

Societal and environmental challenges at the heart of the strategy

Changes in preparation or presentation of the sustainability statement

Reporting errors in prior periods During the current campaign, the errors identi fi ed in the reports of previous years are corrected. The corrections made during the 2025 fi nancial year concern: ● the workforce at the end of the period was corrected for an error in the scope of consolidation; and ● the “total annual compensation ratio (S1-16>97 b)” indicator was included in the 2025 publication, calculated on an unweighted basis in accordance with the requirements of the standard. The weighted workforce ratio was maintained at entity speci fi c. Disclosure of information from other legislative acts or sustainability information standards The group includes information in its sustainability statement relating to the GRI (“Global Reporting Initiative”) guidelines. Incorporation by reference The list of data points incorporated by reference is detailed in the table below.

Compared to the 2024 fi nancial year, certain sub-topics of the materiality analysis have been reformulated, merged or separated, with no impact on the content of the report. In addition to the methodological details in the topical Sections, the main indicators that have changed methodology or scope are as follows: ● environmental indicators have included the deconsolidation of its Nigerian subsidiary, Somaïr, including retroactively to the extent that the loss of control then expropriation (1) of Orano by the State of Niger has not ended mining activities; ● upstream scope 3 GHG emissions have been updated with the latest monetary emission factors available from ADEME, including retroactively; and ● the calculation of training hours per employee is now calculated using Full-time workforce (FTE). The 2024 data has been recalculated.

INCORPORATION BY REFERENCE

Data points incorporated by reference

Reference

4

Sustainability skills and expertise within the Board of directors

Reference to Chapter 5 for directors’ sustainability expertise Reference to the vigilance plan in Chapter 3 Reference to Chapter 2 on the group’s activities Reference to Chapter 1 for the value creation model and value for stakeholders Reference to Chapter 2 on the group’s new activities Reference to Chapter 5 for terms of of fi ce of directors

[ESRS 2>GOV-1>21]

[ESRS 2>GOV-4>30; 32] Due diligence process

[ESRS 2>SBM-1>40]

Sustainability matters within the strategy and markets

[ESRS 2>SBM-1>42]

Value generated and bene fi ts for stakeholders

E5-5 – Resource outflows

Description of activities related to the principles of the circular economy Term of of fi ce of a director within a public administration in the two years preceding the reporting period

[G1-5 >30]

Use of phase-in provisions Orano has systematically mentioned the use of the phase-in arrangements provided for by the CSRD directive and used by the group for this fi nancial year.

(1) For more information on the situation in Niger, see Section 2.1.2.1 Mining.

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Orano - Annual Activity Report 2025