Page 1 MID-WEST EXPLORATION BUILDS TOWARDS DRILLING HIGHLIGHTS • Field activities underway at Tallering, Kirkalocka and Warriedar in the Mid- West. • Santy advancing towards maiden drilling in November 2026, with fieldwork targeting tungsten anomalies and additional drill targets. • Kirkalocka advancing towards drill-ready status, with ~1,500 soil samples completed (assays pending) and heritage surveys planned for September. • Kirkalocka targets strategically located near the existing Kirkalocka Gold Mine and processing infrastructure. • Maiden field program at Warriedar, targeting an underexplored tenement holding within a highly active exploration district surrounded by established resource companies. Catalina Resources Limited (ASX: CTN) (“Catalina” or “the Company”) is pleased to provide an update on exploration activities across its Mid-West exploration portfolio, with a coordinated program of field activities commencing Monday, 7 September 2026 across the Tallering, Kirkalocka and Warriedar projects. These activities are focused on advancing Tallering and Kirkalocka towards drilling, while commencing Catalina’s maiden on-ground assessment of the underexplored Warriedar Project. The program continues the Company’s focus on maintaining exploration momentum across its Mid-West portfolio and progressing priority projects towards their next stage of activity. Executive Director, Mr Ross Cotton commented: “We are focused on delivering results and on getting our priority targets drill-ready. A significant amount of work has been completed across the Mid-West portfolio over recent months and we are now seeing that translate into a clear pipeline of exploration activity. Santy is moving towards drilling in November, Kirkalocka is approaching drill-ready status, and at Warriedar we are getting on the ground for the first time to assess what we believe is a compelling opportunity in a highly prospective part of the Mid-West. Work is progressing at all projects concurrently where possible. While assays are being finalised at Kirkalocka, we are completing heritage work; while heritage matters progress at 7 September 2026 ASX Announcement Page 2 Tallering, we are refining drill targets and identifying the next opportunities. We want to make sure that when each milestone is completed, we are positioned to move straight into the next phase of work. There is good momentum across the portfolio and our focus is clear – complete the work, refine the targets and get drilling.” Figure 1: Catalina’s Mid-West exploration portfolio Tallering Project – Santy Target Advancing Towards Drilling The Santy target within Catalina’s Tallering Project continues to advance towards maiden drilling, with the Company targeting commencement of its first drill program in November 2026, subject to completion of heritage clearances. Historical exploration1 at Santy has defined a 2.2km gold anomalous trend along strike from the A Zone and Mixy gold deposits, while subsequent2,3 review and fieldwork has highlighted an additional tungsten-polymetallic opportunity. Historical drilling2 returned 17m @ 0.178% WO₃ from 79m (SRC006), including 4m @ 0.367% WO₃, with individual intervals up to 0.839% WO₃. A further 3m @ 0.154% WO₃ from 99m to EOH (SRC007) ended in mineralisation. Page 3 More recently, Catalina fieldwork3 returned rock-chip results of up to 0.62% WO₃, 1,480ppm Mo, 12,300 ppm Bi, 1.975% Cu, 530g/t Ag and 5.70g/t Au. The tungsten-molybdenum- bismuth association, together with an untested eastern IP conductivity anomaly, has further refined priority areas for follow-up. With heritage clearances progressing, Catalina’s exploration team will return to Tallering for further pre-drill fieldwork. The program will focus on continuing reconnaissance for additional targets across the broader Santy project. The work is a further step towards the planned November drill program, which will provide Catalina with its first opportunity to directly test priority gold and tungsten-polymetallic targets at Santy. Figure 2: Tallering Project with identified prospects and previously reported results. Kirkalocka – Advancing Towards Drill-Ready Kirkalocka is a key component of Catalina’s Mid-West strategy, with priority targets located near the existing Kirkalocka Gold Mine and processing infrastructure. Historical exploration1 has identified several gold prospects, including Highway, Capra, Avis and Two Mile Bore, with significant results including: • 1m @ 23.08g/t Au from 18m (08KLRC033); Page 4 • 6m @ 1.79g/t Au from 42m (KKA796) at Highway; • 6m @ 1.38g/t Au from 27m (KKA795) at Highway; and • surface sampling of up to 9.89g/t Au (sample 17959) at Avis5 . Catalina has progressively advanced these targets through historical data review, field reconnaissance and, most recently, completion of an approximately 1,500-sample soil geochemistry program4 , with assay results currently being finalised. Heritage surveys across priority target areas will commence within the month, with Catalina personnel joining Badimia Traditional Owners and heritage consultants on the ground. With the soil program complete, the heritage survey represents a key final step towards drill- ready status. Pending soil results will be incorporated into final target selection ahead of the planned maiden drill program. Kirkalocka’s location directly adjacent to existing processing infrastructure provides additional strategic relevance to exploration success and a potential future development pathway should economically significant gold mineralisation be established. Figure 3: Regional map showing location of soil program at each priority prospect Page 5 Warriedar – First On-Ground Exploration A maiden field reconnaissance program will also commence at the Warriedar Project. Warriedar is located within the Yalgoo–Singleton Greenstone Belt in an active exploration and development district, with Catalina’s tenure surrounded by projects held by several established gold and resources companies6 . Catalina considers the Warriedar tenure to be comparatively underexplored, presenting an opportunity to apply modern exploration and interpretation to an existing landholding within a prospective and tightly held part of the Mid-West. The initial field program will focus on ground-truthing historical exploration and geological datasets, assessing prospective structures and lithological settings and identifying priority areas for follow-up exploration. The program represents the first step in establishing Catalina’s own on-ground understanding of Warriedar and determining where future exploration can be focused most effectively. Figure 4: Aeromagnetic image showing the location of the Warriedar in relation to major projects Page 6 Contacts Ross Cotton Executive Director T: +61 (0)8 6188 8181 Investor Enquiries George Ventouras George@corporatestorytime.com T + 61 (0) 418 945 353 Click Here leave a question about this announcement and to visit our Investor Hub This announcement has been authorised for release by the Executive Director, Ross Cotton. REFERENCES (ASX) This Report contains information extracted from ASX market announcements reported in accordance with the 2012 edition of the “Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves” (“2012 JORC Code”). Further details (including 2012 JORC Code reporting tables where applicable) of exploration results referred to in this announcement can be found in the following announcements lodged on the ASX: 1 ASX announcement 15 June 2026 ASX:CTN - Significant Historic Gold Results Across Mid-West Portfolio 2 ASX announcement 21 July 2026 ASX:CTN - High Grade Tungsten Mineralisation at Tallering 3 ASX announcement 20 August 2026 ASX:CTN - Santy Delivers High-Grade Tungsten & Polymetallic Results 4 ASX announcement 3 August 2026 ASX:CTN - Kirkalocka Soil Program Complete, Heritage Survey Next 5 ASX announcement 8 July 2026 ASX:CTN - Kirkalocka Drilling Nears Following Field Success 6 ASX announcement 14 May 2026 ASX:CTN - Key Acquisition & Placement Expands Mid- West Gold Portfolio Page 7 COMPETENT PERSONS STATEMENT Reported information in this announcement that relates to exploration activities is based on information compiled by Dr Nishka Piechocka, PhD, Vice President of the Australian Institute of Geoscientists (AIG) and a full-time employee of Catalina Resources Limited. Dr Piechocka has sufficient experience relevant to the style of mineralisation and type of deposit under consideration and to the activity being undertaken to qualify as a Competent Person as defined in the 2012 Edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (JORC Code). Dr Piechocka consents to the inclusion in the report of the matters based on her information in the form and context in which it appears. The Company confirms that it is not aware of any new information or data that materially affects the information included in the original market announcement and, in the case of estimates of Mineral Resources or Ore Reserves, that all material assumptions and technical parameters underpinning the estimates in the relevant market announcement continue to apply and have not materially changed. The Company confirms that the form and context in which the Competent Person’s findings are presented have not been materially modified from the original market announcement. FORWARD-LOOKING STATEMENTS This announcement contains forward-looking statements that are subject to a range of risks and uncertainties. These statements relate to the Company’s expectations, intentions, or strategies regarding the future.These statements canbe identified by the use of words like “anticipate”,“believe”, “intend”, “estimate”, “expect”, “may”, “plan”, “project”, “will”, “should”, “seek” and similar words or expressions containing same. These forward-looking statements reflect the Company’s views and assumptions with respect to future events as of the date of this release and are subject to a variety of unpredictable risks, uncertainties, and other unknowns. Actual and future results and trends could differ materially from those set forth in such statements due to various factors, many of which are beyond our ability to control or predict. These include, but are not limited to, risks or uncertainties associated with the acquisition and divestment of projects, joint venture and other contractual risks, metal prices, exploration, development and operating risks, competition, production risks, sovereign risks, regulatory risks including environmental regulation and liability and potential title disputes, availability and terms of capital and general economic and business conditions. Given these uncertainties, no one should place undue reliance on any forward-looking statements attributable to the Company, or any of its affiliates or persons acting on its behalf. Subject to any continuing obligations under applicable law the Company disclaims any obligation or undertaking to disseminate any updates or revisions to any forward-looking statements in this announcement to reflect any change in expectations in relation to any forward-looking statements or any change in events, conditions or circumstances on which any such statement is based. ABOUT CATALINA RESOURCES LIMITED Catalina Resources Limited is an Australian diversified mineral exploration and mine development company whose vision is to create shareholder value through the successful exploration of prospective gold, base metal, and speciality metal projects and the development of these projects into production. The Mid-West portfolio comprises a growing landholding across a highly prospective mineral province of Western Australia, with projects located in close proximity to the Kirkalocka Gold Mine and other established mining operations and infrastructure. The portfolio hosts multiple gold, copper and critical- mineral opportunities, including the emerging tungsten-polymetallic system at Tallering, providing Catalina with a strong pipeline of exploration targets.