The Group
An African group built to last.
GROUPE SEMEGA brings together industrial and commercial companies operating in sectors that determine a country’s development: energy, food, mineral resources and logistics flows.
Our history
The group was built trade by trade, around operating companies already active in their markets: DIANE OIL in energy and hydrocarbons, DIANE AGRO in agro-industry, CHALLENGE CORPORATES in mining operations and heavy logistics, RICHLAND MINERALS in exploration and mining development.
Data to be confirmedFounding dates, milestones and group structuring steps: [TO BE CONFIRMED].

Our mission
To turn African resources, territories and opportunities into lasting value — for the markets we serve, for the communities where we operate, and for the generations that follow.
Our vision
To become a leading integrated African group, able to cover the full chain: from resource to finished product, from extraction to distribution, from port to landlocked territory.
Our values
- 01
Execution
In our trades a promise is worth nothing without the logistics, teams and means to keep it. We judge ourselves on what gets delivered.
- 02
Integration
Energy, agro, mining and logistics reinforce one another. We build complete chains rather than isolated activities.
- 03
Local roots
We operate where we are established, with local teams, local suppliers and a measurable contribution to the territory.
- 04
Endurance
Infrastructure, supply chains and skills are built over decades. Our decisions are taken on that horizon.
- 05
Safety
Hydrocarbons, heavy transport and mining operations allow no approximation. People’s safety comes before performance.
- 06
Transparency
We publish what we can prove. What is not yet consolidated is flagged as such, never rounded up.
Governance & organisation
The group operates on a model of subsidiaries autonomous in their trade, gathered around a group management that steers strategy, resource allocation, compliance standards and brand consistency.

M. Oumar Abdoulaye Diane Semega
Chairman & Chief Executive Officer
General management and chairmanship held by Mr. Oumar Abdoulaye Diane Semega, Chairman & Chief Executive Officer of GROUPE SEMEGA.
View Chairman & CEO’s address and official profileAfrican ambition
West Africa is one continuous economic space: the same corridors feed energy, agro-industry and mining. The group is structured to operate at that regional scale rather than within a single market.
Africa
Anchored in Mali. Oriented towards West Africa.
The group’s activities are anchored in Mali and structured around the West African logistics corridors that connect Atlantic ports to inland production areas.
- Operating presence
- Corridor / development area
Data to be confirmedCorridors and development areas represent logistics routes and expansion orientations. They do not constitute a declaration of establishment. Exact scope to be confirmed.
Our vision
We do not simply want to take part in Africa’s growth. We want to help build it.
GROUPE SEMEGA — Vision

