Announcement PDF Page 1 Catalina Advances Beasley Creek with Soil Sampling to Define and Expand Flamingo System HIGHLIGHTS ➢ Soil sampling commenced at the high-priority Flamingo target, advancing Beasley Creek toward drill-ready status ➢ First modern, systematic geochemical program undertaken across the project area ➢ Program targeting expansion of a coherent multi-element mineralised system (Au–Cu–Zn–Ni–As) ➢ Focus on defining scale and continuity of an interpreted copper–gold volcanic- hydrothermal system ahead of drilling Catalina Resources Limited (“Catalina” or “the Company”) is pleased to advise that it has commenced a soil sampling program at the Flamingo target within its 100%-owned Beasley Creek Project in Western Australia. The Flamingo target represents the primary focus of current exploration activities and is considered the most advanced and prospective target within the project area. Recent geological work1 highlighted Flamingo as a coherent copper–gold volcanic-hydrothermal system, defined by multi-element geochemical anomalism, favourable structural architecture and supporting geophysical features. This program represents the next step in the first modern, systematic exploration campaign across the project area and advances the Company’s strategy at Beasley Creek by refining the geochemical footprint at Flamingo and progressing toward targeted drill testing. Catalina Executive Director, Ross Cotton, commented: “Commencing soilsampling at Flamingo representsa keystep in advancing Beasley Creektowarddrill- ready status, with the program designed to refine target scale and continuity. The recent upgrade to a copper-dominant hydrothermal interpretation at Flamingo, combined with early geochemical responses along the Mithgoondy Shear Zone, reinforces broader district-scale potential and the potential for multiple mineralised systems along the corridor. With a clear geological model established, the Company is now focused on execution and positioning to move efficiently into drilling as approvals and access are finalised.” Regional Context and Background Catalina’s 100% owned Beasley Creek Project is located within the northern Capricorn Orogen and remains underexplored relative to its geological potential. ASX Announcement 15 April 2026 Page 2 Recent integrated geological, geochemical and geophysical interpretation has materially upgraded the exploration framework, shifting focus to structurally controlled bedrock mineralisation. Within this context, the Flamingo target has emerged as a high-priority opportunity, interpreted as a copper–gold volcanic-hydrothermal system with potential for additional structural overprint. Importantly, while historical exploration identified anomalous geochemistry and localised high-grade gold, including a historical intersection of 4m @ 11.4 g/t Au2 , the underlying bedrock system and its extensions along strike and at depth remain largely untested, highlighting a compelling opportunity for systematic discovery. Figure 1. Regional location diagram of the Beasley Gold Project (E47/3490) Corridor-Scale Target Expansion and Geochemical Definition A soil sampling program has commenced at Beasley Creek, designed not only to refine the Flamingo target but to expand the known footprint of mineralisation along the Mithgoondy Shear Zone (figure 2). At these emerging targets, arsenic outlines broad, lens-shaped halos that enclose coherent Cu–Au–Ag anomalism. The spatial coherence and zonation are interpreted to reflect a structurally controlled hydrothermal system. Sampling is designed to: ➢ Infill and extend existing geochemical coverage ➢ Define the scale, continuity and zonation of anomalism ➢ Strengthen targeting confidence across structurally controlled mineralisation ➢ Prioritise and optimise upcoming drill collar locations Importantly, the program represents a transition from single-target evaluation to systematic corridor- scale exploration, with the objective of identifying and advancing multiple targets within a potentially larger mineralised system. For further information on the geological interpretation of the Beazley Creek Project, please refer to the ASX announcements on 8 December 2025 and 25 February 2026. Page 3 Figure 2. Interpreted soil geochemical contours and soil sampling targets Implications for Forward Exploration The current program is a key step in positioning Beasley Creek as a multi-target opportunity, with work underway to define the scale of mineralisation along the Mithgoondy Shear Zone. By expanding geochemical coverage and refining target definition, Catalina is building a pipeline of drill-ready targets, with the potential to materially increase the overall scale and significance of the project. Subject to heritage clearances and the outcome of the EIS co-funding application, the Company intends to progress to targeted drilling, applying a disciplined approach to capital deployment while maintaining exposure to discovery across a broader mineralised system. Next Steps Catalina is progressing a clear pathway to drilling at Beasley Creek, supported by ongoing target refinement and parallel workstreams to secure access and funding. Planned activities inclide: ➢ Completion of soil sampling program and receipt of assay results ➢ Integration of geochemical data with geological and geophysical interpretations ➢ Reconnaissance geological mapping to validate interpretations and refine drill collar positioning ➢ Finalisation of priority drill targets and program design Page 4 In parallel, the Company will progress: ➢ Outcome of the Exploration Incentive Scheme (EIS) co-funding application ➢ Ongoing heritage engagement and access negotiations Catalina will provide further updates as results are received and the exploration program advances. Contacts Investors / Shareholders Ross Cotton Executive Director T: +61 (0)8 6188 8181 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 Refer CTN ASX Announcement 25 February 2026 Catalina-Advances-Flamingo-Cu-Au-Exploration- Model.pdf 2 Refer CTN ASX Announcement 8 December 2025 Independent-Review-Confirms-Gold-Potential-at- Beasley-Creek.pdf The Company confirms that it is not aware of any new information or data that materially affects the information in the original reports, and that the form and context in which the Competent Person’s findings are presented have not been materially modified from the original reports. Competent Person Statement The information in this announcement that relates to exploration activities within the Beasley River Project 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 Apex Geoscience. 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. Page 5 Where the Company refers to the Mineral Resources in this report (referencing previous releases made to the ASX), it confirms that it is not aware of any new information or data that materially affects the information included in that announcement and all material assumptions and technical parameters underpinning the Mineral Resource estimate with that announcement continue to apply and have not materially changed. 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 can be 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 (including risks associated with completing due diligence and, if favourable results are obtained, proceeding with the acquisition of the Beasley Creek Project), 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, lithium and iron ore projects and the development of these projects into production.