KAMSAR, Guinea, 24 October 2026 – Nimba Mining Company (NMC) announces the appointment of Djiba Diakité as Chairman of the Board of Directors and Patrice L’Huillier as Chief Executive Officer under two presidential decrees dated 23 October 2026.

Nimba Mining Company S.A. (NMC), a national mining company wholly owned by the Guinean State, is consolidating its governance through these appointments, combining strategic oversight by the Board of Directors with operational management by the Chief Executive Officer.

This framework supports NMC’s development and its contribution to the development of the Republic of Guinea’s natural resources. It brings together the setting of the company’s strategic direction and oversight of its implementation, with a focus on operational performance.

Djiba Diakité Appointed Chairman of the Board

Djiba Diakité is appointed Chairman of NMC’s Board of Directors for a three-year term, renewable once. As Minister and Chief of Staff to the Presidency of the Republic, he will undertake this responsibility within the remit of the Board of Directors.

In this role, he will contribute to setting and overseeing NMC’s strategic direction. The Board will support the company’s development and ensure that its priorities remain consistent with its objectives for creating value for Guinea.

Patrice L’Huillier Appointed Chief Executive Officer

Patrice L’Huillier is appointed Chief Executive Officer of NMC for a renewable three-year term, under a performance contract with the Ministry of Mines and Geology. The contract will specify his objectives, the arrangements for evaluating his performance, and his obligations regarding the transfer of skills to Guinean executives.

Patrice L’Huillier was already publicly identified as NMC’s Chief Executive Officer before 23 October 2026. This appointment formalises his mandate and provides continuity in the company’s operational management, with a focus on industrial performance and the development of its teams’ skills.

“The Board’s priority will be to set a clear strategic direction for NMC and oversee its implementation. Our ambition is to support the development of a high-performing national company that creates lasting value for Guinea, with governance that reflects the responsibilities entrusted to it.”

Djiba Diakité
Chairman of NMC’s Board of Directors

“I am honoured by this appointment at the helm of NMC, which commits us to continuing the work undertaken with the teams who have been dedicated from day one to turning the government’s vision into reality. Our priorities are operational reliability, industrial performance, and the transfer of skills to Guinean executives, in line with the objectives agreed with the Ministry of Mines and Geology.”

Patrice L’Huillier
Chief Executive Officer of NMC

Governance Supporting Performance

The Board of Directors and the Chief Executive Officer will fulfil their respective responsibilities with a shared commitment to NMC’s sustainable development. The combination of strategic direction and operational execution will support effective management of the business, the development of its teams, and value creation for Guinea.

About Nimba Mining Company

Founded in 2025, Nimba Mining Company S.A. is a wholly Guinean-owned company, held by a holding company dedicated to the extraction, processing, and value-addition of Guinea’s natural resources. It operates the Tinguilinta mine, one of the country’s largest bauxite deposits, and the port facilities at Kamsar. NMC embodies a model of sovereign and sustainable governance in the service of the economic and social development of the Republic of Guinea.

NMC S.A. has a share capital of GNF 50,000,000,000 and is registered with the Kaloum Trade and Personal Property Credit Register under number GN.TCC.2025.B.11339.

Address: Quartier Kamsar Centre, Kamsar, Republic of Guinea.