Shares in Greatland Resources Ltd (AIM:GGP, OTC:GRLGF, FRA:G8G, ASX:GGP) rose 14% to 760p after the gold and copper miner reported quarterly production of 82,723 ounces of gold and 4,128 tonnes of copper for the March 2026 quarter, while growing its cash pile by $260 million to $1.208 billion.

The company ended the quarter debt-free, with the cash build achieved after capital expenditure and a $73 million tax payment relating to the FY25 period.

Year-to-date FY26 production reached 249,887 ounces of gold and 11,022 tonnes of copper, with Greatland now expecting full-year output to come in around, or slightly above, the upper end of its guidance range of 260,000 to 310,000 ounces of gold.

Sales for the March quarter reached 97,800 ounces of gold and 4,620 tonnes of copper.

All-in sustaining costs for the quarter are still being finalised and will be reported in the full quarterly activities report due later in April.

Greatland said it was monitoring potential supply chain risks linked to Middle East tensions but confirmed its Telfer operation in Western Australia had not been affected by diesel supply disruptions, with fuel supplied directly via Port Hedland under a long-term contract with a global oil major.

Telfer held surface stockpiles of 22 million tonnes at the end of March, which the company estimated would provide more than 12 months of mill feed.