ORANO // Annual Activity Report 2024

Orano - Annual Activity Report 2024 332 6 STATEMENTS Consolidated financial statements - financial year ended December 31, 2024 Remeasurements of the net liability for defined-benefit obligations (change in the obligation and financial assets due to changes in assumptions and experience differences) are recognized in “Other items of comprehensive income”; they cannot be reclassified to the income statement. In contrast, actuarial gains and losses relating to benefits for currently employed employees (e.g., long-service awards) are recognized in the statement of income under “Other operating income and expenses.” The costs relating to employee benefits (pensions and other similar benefits) are split into two categories: ● the discounting reversal expense for the provision, net of the expected yield on assets earmarked for retirement plans, is charged to net financial income (expense); the expected yield on the assets is calculated using the same interest rate used to discount the provision; ● the expense corresponding to the cost of the services rendered is divided between the different operating expense items by purpose: the costs of products and services sold, Research and Development expenses, sales and marketing expenses, administrative expenses. Past service costs, including the expense or income related to plan amendments/settlements or the introduction of new plans are recognized in the income statement under “Other operating income and expenses.” 1.3.11. Provisions related to operating activities In accordance with IAS 37, a provision is recognized when there is a present legal obligation, contractual or constructive, resulting from a past event, the termination of which is likely to result in an outflow of resources for the entity without any counterparty expected after the reporting date. A reasonably reliable estimate of this net outflow must be determined in order to recognize a provision. When the outflow of resources is expected to occur in more than two years, provisions are discounted to net present value if the impact of discounting is material. Provisions for contract completion Provisions for contract completion cover a series of future expenses to be incurred on the la Hague and Melox (Back End segment), Tricastin and Malvési (Front End segment) sites for waste treatment and other activities resulting from the operating cycle. For the Back End segment, the work mainly covers the warehousing, treatment, packaging, transportation and storage of technological and process waste, and, for the Front End segment, nitrate effluent and dust treatment and packaging. Furthermore, the group holds nuclear materials in various physical or chemical forms that may require specific treatments to make them marketable. The group assesses the need to establish a provision on a case-by-case basis, based on (i) existing obligations at year-end, (ii) the existence and availability of treatment facilities or the feasibility of development projects for new processes, (iii) the estimated costs of recovering these materials and (iv) the commercial prospects or economic benefits expected from these materials once recovered. A provision is recognized when the business outlook or economic benefits are insufficient in relation to the costs of treating or developing the valuation channels and the provision may be reliably estimated. The discount rate is determined on the basis of the yield curve for French government securities (OAT rates) at the reporting date, extended for non-liquid maturities using a long-term equilibrium rate, plus a spread applicable to Investment Grade corporate bonds as well as an illiquidity premium. Based on expected disbursements, a single equivalent rate is deducted from the rate curve constructed in this manner. The inflation rate is set in accordance with the long-term inflation projections for the Eurozone and taking into account the European Central Bank’s target rate. Changes in assumptions relating to changes in cost estimates, discount and inflation rates, and payment schedules are recognized in profit or loss. Onerous contracts An onerous contract is one in which the costs to fulfill the terms of the contract exceed the economic benefits expected from it. Costs to fulfill the terms of the contract reflect the net cost of exit from the contract, which is the lesser of the cost of performing the contract or any compensation or penalty arising from the failure to perform it. When the group records an onerous contract, the present value of the resulting obligation is subject to a provision (after taking into account any impairment of the assets earmarked for its performance). Provisions for restructuring A provision for restructuring is recognized by the group when it has a constructive obligation, which is materialized when: (i) there is a formalized and detailed plan specifying the activity or part of the activity concerned, the location and number of people affected, an estimate of the expenses to be incurred and the date on which the plan will be implemented; and (ii) the people affected have been properly informed of the plan’s main features. Provisions for mining site remediation These provisions correspond to foreseeable expenses stemming from the cost of rehabilitating mining sites borne by the group. The provision is constituted as and when the site is operated, in accordance with the principle of progressive deterioration. The provision for mining site reclamation is equal to the proportion of tonnages processed since the commissioning of the site compared to the total tonnage of the site (quantities already processed and yet to be processed). 1.3.12.Provisions for end-of-lifecycle operations Provisions for end-of-lifecycle operations cover: ● the costs of dismantling to bring the facility to the final state of decommissioning, including the costs of treatment and packaging of the waste resulting from the dismantling operations;

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