Downer awarded New Zealand State Highway alliance contract

DOWNER AWARDED NEW ZEALAND STATE HIGHWAY ALLIANCE CONTRACT Downer EDI Limited (Downer) today announced that it had entered into a Project Alliance Agreement (PAA) to construct the southern component of the Ōtaki to North of Levin (Ō2NL) highway project between Wellington and Palmerston North on the New Zealand North Island. Downer is part of the Ō2NL South Alliance, comprising Downer, McConnell Dowell, Beca and Tonkin + Taylor, which will deliver the 12 kilometre southern section of the new 24 kilometre highway corridor on behalf of NZ Transport Agency Waka Kotahi (NZTA). Revenue to Downer is approximately NZ$311 million (AU$280 million). The award of the PAA follows a collaborative Interim Project Alliance Agreement phase of more than 12 months, focused on determining delivery timelines and project scope, and developing a Target Outturn Cost (TOC). Establishment works commenced in July 2025 and main construction will begin in Spring 2025, with the road scheduled to open in late 2029. The southern section of the project also includes a separated shared pathway for walking and cycling, a southern half interchange connecting the new four-lane highway to the local road network, seven bridges and two underpasses. The Chief Executive Officer of Downer, Peter Tompkins, said Downer is proud to be collaborating with our alliance partners on this significant project that will deliver a safer, more resilient and efficient highway for the rapidly-growing Horowhenua and Greater Wellington region. “Downer has a rich history of major project delivery in New Zealand – building and maintaining networks that link the most essential routes across Aotearoa,” Mr Tompkins said. “We look forward to working with NZTA to deliver this important part of the Roads of National Significance program, and to partnering with local iwi and hapū to ensure the project delivers long-lasting community outcomes.” Authorised for release by Downer’s Chief Executive Officer, Peter Tompkins About Downer Downer EDI Limited (Downer) is a leading provider of integrated services across Australia and New Zealand, delivering and maintaining essential infrastructure that enable communities to thrive. The demand for our services is shaped by investment in the energy transition, defence capability, government services and infrastructure expansion necessary to support population growth, and local industry revitalisation. The sectors where we operate include roads, rail, ports and airports, power, gas, water, telecommunications, energy networks, health, education, defence, and other government sectors. Downer is one of Australia’s and New Zealand’s largest private sector employers, with more than 26,000 dedicated people, who are united by our high-performance culture, known as ‘The Downer Difference’. For more information visit downergroup.com. For further information please contact: Media: Mitchell Dale, General Manager Corporate Affairs +61 448 362 198 Investors: Mel Buffier, Group Head of Investor Relations +61 411 622 899