Annual Activity Report 2025

2 SITUATION AND ACTIVITIES OF THE COMPANY AND ITS SUBSIDIARIES DURING THE PAST FINANCIAL YEAR Simpli fi ed group organization chart – subsidiaries, equity interests and branch of fi ces

2.2 Simpli fi ed group organization chart –

subsidiaries, equity interests and branch of fi ces

2.2.1 Simpli fi ed group organization chart at December 31, 2025

Orano (SA)

Dismantling and Services

Nuclear Packages and Services

Chemistry Enrichment

Aval du Futur program

Recycling

Projects

Mining

100%

100%

100%

100%

100%

100%

76.36% (1)

Orano Démantèlement et Services (SASU)

Orano Chimie-Enrichissement (SASU)

Orano Recyclage (SASU)

Orano Nuclear Packages and Services (SASU)

Orano Projets (SASU)

Orano Aval du Futur (SASU)

Orano Mining (SASU)

100%

INEVO Group (SASU)

Orano Mining Expansion (SASU)

95%

66%

Trihom (SAS)

SET Holding (SAS)

Orano Temis (SASU)

Lemaréchal Celestin (SAS)

100%

100%

100%

90%

100%

SET (SASU)

CÉRIS Group (SAS)

100%

100%

68.52%

Orano DA (SASU)

Orano NCS GmbH

BADRAKH Energy LLC (Mongolia)

SET Expansion (SASU)

100%

Orano Ltd

50%

100%

Transnuclear Ltd (Japan)

100%

Orano Canada Inc.

50%

ETC Ltd

51%

Katco (Kazakhstan)

Laboratoire d’Étalons d’Activité (LEA) (SASU)

100%

Nurlikum Mining Uzbek-French LLC (Uzbekistan)

Other activities

45%

100%

Orano USA LLC

Battery Program

Nuclear Medicine clearMed

100%

100%

100%

Orano Decommissioning Services LLC Orano Decommissioning Holdings LLC 25% Accelerated Decommissioning Partners – ADP LLC

Orano Med Theranostics LLC 100% Orano Med Theranostics (SASU) Orano Med Manufacturing (SASU)

100%

100%

Orano Batteries (SASU)

Orano Federal Services LLC

TN Americas LLC

51%

NEOMAT PCAM (SAS)

100%

84.4%

49%

NEOMAT CAM (SAS)

Key : The percentages shown represent direct or indirect shareholding and voting rights at December 31, 2025. Orano SA direct holding Direct holding Indirect holding

Support Companies

Orano Démantèlement (SASU)

Orano (Beijing) Technology Co Ltd (OBT) China

Orano Japan Co Ltd

Orano Support (SASU)

100%

100%

100%

100%

(1) Including 24.60% via CNS

Source: Orano

30

Orano - Annual Activity Report 2025