Antilles Gold Pauses Nueva Sabana EPC work after Cuban JV Hit with OFAC Sanctions

Antilles Gold (ASX: AAU) has announced that its 50%-owned Cuban joint venture Minera La Victoria S.A. (MLV) has been designated a US sanctions target.

The company said the Office of Foreign Assets Control (OFAC) action has forced it to suspend direct involvement in the JV and pause EPC work at Nueva Sabana unless sanctions relief or licensing is obtained.

MLV is not a peripheral holding, it is the company’s Cuban joint venture mining vehicle, with Antilles Gold Inc (AGI) holding 50% and the other 50% held via a subsidiary of the Cuban government’s mining company GeoMinera S.A.

Earlier company disclosures also identified Gold Caribbean Mining S.A. (GCM) as the JV partner responsible for administration and management during Antilles’ suspension of direct participation.

OFAC SDN Designation

OFAC has designated MLV as a Specially Designated National (SDN) on 4 June 2026 in the metals and mining sector in Cuba.

For Antilles, that makes the issue more than a legal label, as it directly affects the company’s ability to participate in, fund, and help manage its main Cuban operating vehicle.

This update also adds specificity to the market uncertainty flagged earlier this month.

Previous filings had said the company was still reviewing the implications for project development, financing, governance, operations and strategy.

The new announcement sets out the immediate operational and funding consequences now in force.

Antilles Pauses Direct Involvement

In response to the designation, Antilles said its US subsidiary AGI has suspended its direct involvement in MLV’s administration, management and funding until further notice.

The company said it is retaining its 50% shareholding in the JV.

That means ownership has not changed, but active participation has.

Antilles remains exposed to the fortunes of the JV while stepping back from day-to-day oversight and direct financial support.

That marks an escalation from the earlier disclosures, in which Antilles said it could not yet determine the likely impact of the sanctions on financing, development, and operations.

Earlier context filings also said GCM would be responsible for the administration and management of MLV operations while Antilles’ direct role is suspended.

That points to a practical shift in JV governance, even though the ownership split remains unchanged.

Nueva Sabana Work Is Suspended

The clearest project-level consequence is at Nueva Sabana, which Antilles has previously described as a key Cuban mine development that is in early construction and not yet generating revenue.

Antilles now says Xinhai Mining is to suspend activity on the EPC contract for the Nueva Sabana mine until either the SDN designation is removed or OFAC licenses MLV to transact with US entities and persons.

The company has not provided fresh guidance on construction timing, cost impacts or how long the suspension could remain in place.

It has, however, made clear that the sanctions position is now the immediate constraint on direct participation and EPC progress.

Context around Nueva Sabana also matters, particularly the offtake agreements MLV signed that were intended to help finance development of the project.

The current filings do not state how those arrangements are affected, so it would be premature to draw conclusions on counterparties or financing structures beyond the company’s statement that direct funding participation has been suspended.

Company Seeks Sanctions Pathway

AGI has initiated discussions with the US Department of State and plans to submit a proposal in response to the sanctions issue.

Antilles and its subsidiaries will comply with all US sanctions and associated restrictions in the interim.

The company had already engaged a New York law firm experienced in US sanctions matters, and is considering whether grounds existed to seek reconsideration of the designation.

In broader industry terms, sanctions designations can complicate funding flows, contractor relationships and governance arrangements, particularly where US persons or entities are involved.

In Antilles’ case, the company has limited itself to the direct consequences it can presently disclose: suspended funding and management participation, paused EPC work, and compliance with sanctions restrictions.

What to Watch

The next steps are relatively clear, even if the outcome is not.

First, investors will be watching whether Antilles can secure either removal of the SDN designation or OFAC licensing that allows MLV to transact with US entities and persons.

Second, attention will turn to how long the suspension of AGI’s direct administration, management and funding role remains in place, and whether GCM can continue managing operations without Antilles’ direct participation.

Third, Nueva Sabana is now a timing issue as much as a project issue.

The key milestone is not a construction update in isolation, but whether the regulatory position changes enough for Xinhai Mining to resume EPC work.

Finally, Antilles had previously said it could not determine the likely impact on financing, development, governance, operations or future strategy.

Further disclosure on those areas, including any practical effects on counterparties or project structuring, now looks central to the next phase of reporting.