DURATEC LIMITED — Capital/Financing Update 2026

Apr 14, 2026

==> picture [594 x 155] intentionally omitted <==

----- Start of picture text -----

ASX ANNOUNCEMENT
----- End of picture text -----

15 April 2026

DURATEC ERTECH JV AWARDED $281M CONTRACT

AT HMAS STIRLING FOR DEPARTMENT OF DEFENCE

Duratec Limited (ASX: DUR ) ( Duratec or the Company ) is pleased to advise that Duratec Ertech Joint Venture ( DEJV ), its 50:50 joint venture with Ertech, has been awarded a $281m contract for the infrastructure upgrades to support future submarine capability at HMAS Stirling on the Diamantina Wharf at Garden Island Western Australia.

Early on-site works, awarded under a separate contract valued at $9.2m, commenced on site in January 2026. This was undertaken alongside the early procurement of approximately $5m of long lead items, while contract design neared 100% completion and final design approval was granted. This award of the main works contract, with a duration of approximately 24 months, marks the conclusion of the ECI Planning Phase and the DEJV will now transition into full delivery, taking the total contract value for the works to just under $300m.

The above project relates to major infrastructure upgrades in anticipation of the arrival of the rotational force from the United States and the United Kingdom under the AUKUS partnership.

Duratec Managing Director, Chris Oates, commented:

“This award represents a significant milestone for Duratec and our joint venture partner Ertech – it marks the successful culmination of an expertly delivered ECI Planning Phase and reinforces the strength of the DEJV’s ECI approach on strategically important Defence infrastructure projects. Duratec is proud to support Australia’s future submarine capability and, through our long-standing relationship with the Department of Defence, to contribute to the timely and compliant delivery of these critical infrastructure upgrades at HMAS Stirling.”

Authorised for release to the ASX by the Managing Director of Duratec Limited.

– ENDS –

	Investors Relations Chris Oates Managing Director Duratec Limited Investor.relations@duratec.com.au	Company Secretary Dennis Wilkins Company Secretary Duratec Limited Dennis.Wilkins@duratec.com.au

==> picture [595 x 14] intentionally omitted <==

==> picture [65 x 12] intentionally omitted <==

Duratec Limited ABN 94 141 614 075 ASX code: DUR

108 Motivation Drive, Wangara WA 6065 08 6206 6900 investor.relations@duratec.com.au duratec.com.au

==> picture [142 x 25] intentionally omitted <==

About Duratec Limited

Duratec Limited (ASX: DUR) is a leading Australian contractor providing assessment, protection, remediation, and refurbishment services to a broad range of assets and infrastructure. The Company’s multi-disciplined capabilities combine engineering experience with project delivery expertise and use a range of in-house assessment technologies, including 3D capture and modelling technology with predictive analysis tools. Headquartered in Wangara, Western Australia, Duratec operates across Australia with offices and project sites in every state and territory, delivering services across multiple sectors including Defence, Commercial Building & Facade, Infrastructure (Water, Transport & Marine), Mining & Industrial, Power and Energy.

Please visit www.duratec.com.au for further information.

This release contains certain forward-looking statements and forecasts, including in relation to possible or assumed future performance, costs, dividends, rates, prices, revenue, potential growth of Duratec Limited, industry growth or other trend projections. Such statements are not a guarantee of future performance and involve unknown risks and uncertainties, as well as other factors which are beyond the control of Duratec Limited. Actual results and developments may differ materially from those expressed or implied by these forward-looking statements, depending on a variety of factors.

Subject to any continuing obligations under applicable law or any relevant stock exchange listing rules, in providing this information, the Company does not undertake any obligation to publicly update or revise any of the forward-looking statements or to advise of any change in events, conditions or circumstances on which any such statement is based.

==> picture [594 x 15] intentionally omitted <==

Duratec Limited ABN 94 141 614 075 ASX code: DUR

Page 2 of 2