The Autonomous Bougainville Government has revoked the Panguna exploration licence held by Bougainville Copper, the company in which it holds a near-73% stake, and handed the rights to a new locally controlled entity. The move, which caught the market by surprise, has wiped out the stock’s entire value in the span of a week.
On June 17, 2026, the Registrar of Tenements of the Autonomous Bougainville Government (ABG) informed Bougainville Copper in writing that its exploration licence, EL01, had been suspended. In its place, the ABG granted a new 25-year mining lease over the same area to Bougainville Minerals Ltd, a company jointly controlled by the ABG and local landowners. The license transfer was made possible by the Bougainville Mining Act 2026, which President Ishmael Toroama pushed through parliament to fast-track the reopening of historic large-scale mines considered of national significance.
The financial blow has been brutal. Bougainville Copper’s shares plunged more than 60% over seven trading sessions, closing on Friday at €0.15. The stock’s relative strength index now stands at 23.5, deep in oversold territory, while annualised volatility has hit nearly 183%. Investors have fled en masse, realising the company has lost its only meaningful asset.
That asset is enormous. Panguna is one of the world’s largest undeveloped copper and gold deposits, estimated to contain 5.3 million tonnes of copper and 19.3 million ounces of gold – worth roughly US$160 billion at current prices. The mine has been dormant since a civil conflict shut it down in 1989. A feasibility study from 2021 pegged the cost of reopening at about US$6 billion, with a seven-year development timeline. For Bougainville Minerals, the financing challenge is immense – and the social and political tensions that originally closed the mine remain unresolved.
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The licence revocation is not an isolated event but part of a broader political strategy. In the 2019 independence referendum, 97.7% of Bougainvilleans voted to secede from Papua New Guinea. The PNG parliament was scheduled to debate ratification in June, but Prime Minister James Marape postponed deliberations until early September. President Toroama has set September 1, 2027 as the target date for full independence. Transferring control of Panguna to a local entity is seen as a key preparatory step to secure the island’s mineral wealth ahead of sovereignty.
The timing could hardly be worse for Bougainville Copper. In April 2026, the company announced a cooperation agreement with India’s Lloyds Metals and Energy to jointly develop Panguna. The status of that deal is now highly uncertain. The company itself has offered little clarity, telling shareholders it is reviewing “what steps, if any, it will take as a consequence” – careful not to commit to legal action or arbitration.
For now, Bougainville Copper is a shell with no revenue. The next inflection point comes in September, when the PNG parliament debates Bougainville’s independence. The company’s ability to mount a credible challenge to the license transfer before then could determine whether it has any future in Panguna at all – or whether the prize slips away for good.
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