Mount Gibson Iron suspended from ASX after rockfall

Mount Gibson Iron Limited has requested an immediate voluntary suspension from quotation, effective October 21, 2025. This suspension is in anticipation of an announcement detailing the impact of a rockfall that occurred on October 17, 2025, on the eastern footwall of the Main Pit at its Koolan Island operation. The company is currently evaluating the situation with external geotechnical engineering specialists.

During this assessment period, Mount Gibson continues to process stockpiled iron ore and manage immediate scheduled shipments, alongside personnel movements off-site as necessary. A more detailed update on the rockfall's anticipated impact will be provided once sufficient technical and economic assessments are complete.

The voluntary suspension is requested to remain in place until either a detailed market update is released by Mount Gibson or the commencement of trading on Friday, October 24, 2025, whichever occurs earlier.