Trading and Earnings Guidance Update

• Fixed contract in dispute
• Purported wrongful termination of contract to impact 1H26 results
• Atturra updating FY26 guidance: revenue $364-$374 million, uEBITDA $30-$31 million

Atturra Limited (ASX: ATA) has announced that on 16 December 2025, a subsidiary of the company received a notice of immediate termination in connection with a fixed-term contract with an Australian public sector body. The company is in the process of considering its legal position and intends to dispute the purported wrongful termination. The financial effect of the termination on the company has been outlined, with the majority of the negative impact expected to be in 1H26. Prior to the termination, Atturra was on track to achieve both its FY26 revenue and earnings guidance. However, the company now expects its FY26 revenue guidance to be in the range of $364 million to $374 million, while FY26 Underlying EBITDA (uEBITDA) is expected to be in the range of $30 million to $31 million. The company expects to deliver uEBITDA between $23 million and $24 million in 2H26, reflecting pre-guidance update expected uEBITDA for the half based on historic uEBITDA splits. The CEO of Atturra, Stephen Kowal, acknowledged the difficulty of the situation but expressed confidence in the company's resilience and focus on delivering value to clients and shareholders.

FY26 revenue of $364 million to $374 million, FY26 Underlying EBITDA of $30 million to $31 million

The company expects to deliver uEBITDA between $23 million and $24 million in 2H26, reflecting pre-guidance update expected uEBITDA for the half based on historic uEBITDA splits.