Atum-1X: A Deepwater Milestone in the MSGBC Basin
In September 2024, APUS Energy successfully drilled the Atum-1X exploration well offshore Guinea-Bissau, marking the country’s first ever deepwater well and its first offshore exploration activity in nearly two decades. Targeting the Atum prospect within the MSGBC Basin, the campaign represents a major step forward in Guinea-Bissau’s offshore energy development.
• Location: Sinapa (Block 2) and Esperança (Blocks 4A and 5A) licenses, covering nearly 5,000 km² of offshore acreage
• Scale: Drilled using the advanced Ocean BlackRhino drillship, marking a significant technical and logistical achievement
• Regional Context: Situated within the MSGBC Basin, near Senegal’s Sangomar field – a key regional discovery that underscores the basin’s untapped deepwater potential
• Economic Impact: The project has the potential to support Guinea-Bissau’s long-term energy strategy through future local engagement, skill development, and infrastructure investment.
• Strategic Importance: A landmark project that positions Guinea-Bissau as an emerging deepwater frontier in West Africa
As the first well in a larger program, Atum-1X lays the foundation for continued exploration in Guinea-Bissau – a step toward unlocking long-term energy potential and supporting national development goals.
Amatitlán Block
In August 2025, APUS Energy finalized the acquisition of a 25% indirect interest in the Amatitlán onshore block – marking a strategic entry into Mexico’s upstream sector and reinforcing our commitment to building a diversified, multi-regional portfolio.
The Amatitlán block covers approximately 230 km², with 45 wells already drilled and additional development potential under assessment. The asset offers both geological upside and near-term production optionality, complementing APUS Energy’s high-impact offshore exploration strategy.
• Location: Amatitlán Block, onshore Mexico
• Acreage: ~230 km²
• Wells Drilled: 45
• Recoverable resources potential: Up to 900 mln barrels
• Entry Date: August 2025 – 25% share acquisition completed
• Strategic Role: Adds onshore depth to offshore exploration portfolio
• Focus: Resource optimization, phased development, and infrastructure integration
The Amatitlán acquisition supports APUS Energy’s strategy of balancing frontier exploration with near-term development opportunities. By entering a producing jurisdiction with existing infrastructure and established frameworks, we aim to accelerate growth while managing portfolio risk and exposure.
Following the recent entry into the Amatitlán project, APUS Energy is focused on optimazing the asset’s development plan. Current efforts include reviewing contractual frameworks and preparing for targeted technical assessments to support future production phases.
A phased approach, starting with early-stage evaluation, will shape long-term planning and support disciplined, value-focused development.
