Melbana Reports $34.8 Million Partner Default and US Sanctions Impact

Partner Default Forces Ownership Shift in Cuban Block 9

Melbana Energy (ASX:MAY) has effectively regained a 70% stake in its Cuban Block 9 PSC after its joint operation partner, Sonangol Pesquisa e Produção S.A., failed to resolve a $34.8 million payment default within the prescribed timeframe. The default notice expired during the June quarter, prompting Melbana to declare Sonangol withdrawn and to notify that the interest would revert to Melbana, pending Cuban regulatory approval. Despite Sonangol’s claims of partial payments, Melbana has yet to receive any funds and is exploring options to recover the debt.

US Sanctions on CUPET Stall Operations and Financial Support

Complicating the situation, the US Department of State designated CUPET, Melbana’s contractual counterparty in Block 9, as a Specially Designated National (SDN) in June 2026. This designation restricts US entities from transacting with CUPET and risks secondary sanctions on others who do. Melbana has suspended all direct financial, technical, and administrative support for the project while conducting a thorough review with external advisors and government departments. Operations had already ceased in late 2025 due to Sonangol’s non-payment, and Melbana currently has no expatriate personnel or contractors in Cuba.

Seismic Data Reveals Migration Path Affecting Hydrocarbon Targets

Newly acquired seismic data and analysis from the Amistad-2 well drilling have reshaped Melbana’s understanding of the subsurface. The primary hydrocarbon target was missed due to earlier misinterpretations stemming from poor-quality legacy seismic and possible acquisition errors. Updated models suggest hydrocarbons previously present may have migrated to the surface, which alters the prospectivity of the area. Melbana plans to prioritise further seismic acquisition to refine the subsurface model and guide future exploration efforts.

Financial Position Tightens Amid Reduced Activity

Melbana ended the quarter with $0.47 million in cash, down from $1.98 million previously, reflecting net operating cash outflows of $0.8 million and exploration expenditure of $0.6 million. Cost reduction initiatives have been implemented in response to the suspension of operations. The company’s ability to sustain activities hinges on recovering the outstanding amounts from Sonangol or securing alternative funding. Sonangol has recently reiterated that funds have been remitted, but Melbana awaits confirmation before deciding on further financing steps.

Outlook Hinges on Regulatory and Financial Developments

Melbana’s path forward depends on multiple uncertainties: the Cuban regulator’s approval of the interest transfer, the success of recovering the substantial debt from Sonangol, and the implications of US sanctions on CUPET. The company remains cautious, having suspended direct involvement in Block 9 while assessing these factors. Its Australian exploration permits remain unaffected by the Cuban developments.