Correction of FY2026 Interim Results Announcement

• Return to growth and improved margins
• Operating cash flow added to net cash available for growth strategies
• Order book up 79% on prior corresponding period

Mastermyne Group Limited (ASX: MYE) has reported a strong half-year result for the six months ending 31 December 2025. Revenue for H1 FY26 was $108.9 million, reflecting a 17% increase on H2 FY25, driven by increased activity levels following the commencement of the Appin contract. Underlying EBITDA increased by 5% to $8.3 million, and underlying net profit after tax more than doubled to $4.1 million, supported by stronger operating performance and improved margins. The Group's order book increased materially to $441 million, up 79% on the prior corresponding period, underpinned by new contract awards and extensions with tier 1 clients. Net operating cash flow for H1 FY26 was $5.5 million, and cash and cash equivalents increased by 12% to $34.1 million at 31 December 2025. The Company expects to show further growth in the second half, underpinned by the significant orderbook.

FY26 revenue guidance of $220m to $230m and underlying EBITDA guidance of $17.0m to $18.0m.

The Company is set for further growth and diversification through leveraging its market position and well capitalised balance sheet, including entering adjacent activities with good strategic fit and returns.