Greatland Resources (ASX:GGP) said its lowered fiscal 2026 gold production guidance of between 260,000 ounces and 310,000 ounces is likely to be material to its share price, according to a Thursday ASX Aware letter response filed with the Australian bourse.

However, the company said its raised all-in-sustaining cost guidance of between AU$2,400 per ounce of gold and AU$2,800 per ounce of gold for the fiscal year is not expected to be material to its share price.

Shares of the company fell 2% in recent Friday trade.