Announcement PDF *(based on the cash balance as at 31 March 2026 and the net proceeds of the Placement, including future shareholder approval of Tranche 2) Catalina Accelerates Mid-West Exploration Activities Highlights ➢ Exploration planning across Mid-West tenure commenced with field reconnaissance scheduled for mid-June. ➢ Drill planning for priority targets expected within approximately six weeks ➢ Technical review and drill planning across expanded Mid-West projects includes the Kirkalocka Project, which is directly adjacent to the Kirkalocka Gold Processing Plant currently being advanced toward recommencement (2Mtpa throughput) ➢ Heritage, access and stakeholder activities underway to support rapid progression toward drilling ➢ Recent capital raising positions Catalina to advance near-term drilling across priority target areas. Indicative cash position is approximately $5.037 million* Catalina Resources Limited (“Catalina” or the “Company”) is pleased to provide an update on activities currently underway across the recently acquired Mid-West Projects1 in Western Australia, comprising the Kirkalocka, Pithara, Warriedar and Tallering project areas (figure 1). Following completion of the acquisition, the Company commenced a systematic technical review of geological, drilling, geochemical and geophysical (including radiometric) datasets across the portfolio. This work includes the generation and prioritisation of exploration targets for field inspection in mid- June. The extensive historical datasets provide a strong basis for rapid advancement of priority targets to drill-ready status. At the same time, the Company commenced heritage due diligence and land access activities across priority areas. Engagement with local landholders and farming stakeholders is underway to support access planning for upcoming drilling programs. Executive Director, Ross Cotton, commented: “Catalina moved quickly to commence review and planning activities across the Mid-West portfolio following completion of the acquisition. Activities are currently underway across the portfolio with the objective of progressing priority target areas toward drilling as soon as possible. Following completion of the recent capital raising associated with the acquisition, the Company is funded to progress review activities and initial drilling programs across priority target areas as planning and access activities are completed. This portfolio provides Catalina with increased exposure to a region where processing infrastructure is becoming increasingly active, including the Kirkalocka processing plant. This has recently been ASX Announcement 1 JUNE 2026 2 demonstrated through market activity associated with toll treatment and processing arrangements in the district. The Company considers its position within the Mid-West region, including the Kirkalocka tenements adjacent to the Kirkalocka processing plant, to represent a meaningful advantage as exploration activities across the portfolio advance.” Figure 1. Regional map showing the location of the Mid-West option tenements in relation to major gold projects. The Mid-West Projects comprise a substantial landholding prospective for gold and base metal mineralisation across several underexplored greenstone belts in Western Australia. The portfolio includes historical workings, previously identified drill targets, geophysical anomalies and areas of limited modern exploration. Historical exploration across the project areas has defined mineralisation, multiple mineralised trends and extensive datasets, highlighting several areas of geological prospectivity for further work. Importantly, several areas within the portfolio remain underexplored and include high-grade orogenic gold and VMS-style systems characterised by extensive surface mineralisation and major untested drill targets. 3 Catalina anticipates completing the technical review, target prioritisation, field reconnaissance and drill planning within approximately six weeks. The review will incorporate historical data compilation, target ranking, heritage and access considerations, and planning for initial drilling programs across priority target areas. The Company’s current focus is progressing priority targets toward drill testing as soon as practicable following completion of planning and access activities. The Company will continue to update shareholders as exploration activities progress. 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. 4 MID-WEST EXPLORATION PORTFOLIO The Mid-West portfolio comprises a district-scale landholding prospective for gold and base metal mineralisation across several underexplored greenstone belts within the Murchison and Mid-West regions of Western Australia. Kirkalocka Project Located within the southern Wydgee–Meekatharra Greenstone Belt adjacent to the Kirkalocka processing plant, the project contains multiple historically identified gold targets associated with interpreted structural corridors and underexplored greenstone belt. Tallering Project Comprising approximately 236km² covering 30km of strike along the Tallering Greenstone Belt, the project is prospective for both orogenic gold and VMS-style mineralisation, with historical exploration identifying multiple coincident EM and IP anomalies associated with gold, silver and copper mineralisation. Pithara Project Located within the Dalwallinu Greenstone Belt, the project includes the historical Pithara Gold Mine together with additional tenure near Bolgart, where historical exploration identified shallow high- grade gold mineralisation and multiple underexplored mineralised trends. 5 Warriedar Project Located within the Yalgoo–Singleton Greenstone Belt, the project is prospective for structurally controlled gold mineralisation associated with regional shear systems and favourable greenstone- hosted geology. Deflector North Project Located within the Deflector gold district,the project provides exposure to structurally controlled gold mineralisation proximal to existing mining and processing infrastructure. Peak Hill Project Located within an established gold district near historical mining centres, the project contains extensive historical workings and underexplored mineralised trends associated with regional structures. Big Bell North & Big Bell South Projects The projects comprise a large landholding along strike from the Big Bell gold system and provide exposure to underexplored greenstone stratigraphy and regional shear-hosted gold mineralisation. Boodanoo Project The project covers approximately 40km of underexplored greenstone belt prospective for large-scale gold systems associated with regional structural corridors. Catalina considers the combination of historical mineralisation, advanced exploration targets and proximity to existing regional infrastructure, including the Kirkalocka processing plant, to provide a strong platform for ongoing exploration assessment and drill planning across the broader Mid-West portfolio. 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 14 May 2026 Key-Acquisition-Placement-Expands-MidWest-Gold- Portfolio.pdf 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 (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 6 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.