Catalina Resources Validates High-Grade Gold Intersections in Expanded Mid-West Portfolio Following In-Depth Historical Data Analysis

Catalina's Expanded Gold Footprint in Western Australia and Strategic Market Positioning

Catalina Resources Limited is an Australian gold exploration company focused on advancing a portfolio of gold projects across Western Australia's established mineral provinces. The company significantly expanded its operational footprint through the acquisition of the Mid-West project portfolio announced in May 2026, which includes the Pithara, Kirkalocka, Tallering, and Warriedar projects. Alongside these recent acquisitions, Catalina maintains existing gold projects such as Evanston, Yerilgee, Peak Hill, Deflector North, Big Bell, and Boodanoo, forming a diversified exploration portfolio across multiple prospective regions.

The timing of Catalina's Mid-West acquisition coincides with increased regional exploration activity. The portfolio includes tenements immediately adjacent to the Kirkalocka Gold Mine, which holds an estimated mineral resource of approximately 240,000 ounces of gold and is located near the 2 million tonne per annum Kirkalocka Gold Processing Plant. The planned recommencement of the Kirkalocka processing hub by Gylden Resources in 2026 emphasizes the strategic value of Catalina's position within an emerging regional gold production center, potentially providing access to processing infrastructure as exploration and development advance.

High-Grade Gold Confirmed by Historical Drilling at Pithara Project

The Pithara project, situated within the Dalwallinu Greenstone Belt, is a key asset within Catalina's expanded Mid-West portfolio. It encompasses the historical Pithara Gold Mine and additional tenure near Bolgart. Previous operators’ historical drilling identified shallow high-grade gold mineralisation and multiple underexplored mineralised trends. The geological environment features granitoid and granite gneiss, with gold mineralisation historically linked to a 3–5 metre thick amphibolite unit and an adjacent laminated quartz vein along its eastern contact. This vein, typically 1–3 metres and up to 4 metres thick, is the primary host of mineralisation.

Catalina's review of historical drilling data at Pithara confirmed several significant gold intersections, including 5 metres grading 2.70 grams per tonne gold from 29 metres depth, incorporating 1 metre grading 8.53 grams per tonne gold from 31 metres (hole DTR949). Additional high-grade intersections include 7 metres grading 1.76 grams per tonne gold from 89 metres (PTRC008), and holes DTR1176 and DTR1175 returning 2 metres grading 2.45 grams per tonne gold and 2 metres grading 1.74 grams per tonne gold respectively, each with 1-metre intervals of higher-grade mineralisation. These results highlight the project's mineralisation potential and support Catalina's plans to advance drilling programs.

Multiple Gold Zones at Kirkalocka Project Near Operational Processing Facilities

The Kirkalocka project is a strategically important part of Catalina's Mid-West portfolio, with tenements directly adjacent to the Kirkalocka Gold Mine. Historical drilling confirmed multiple gold mineralised zones, validating the district's prospectivity. The extensive drilling database compiled during Catalina's review supports target generation and future exploration planning.

Notable historical drilling results from Kirkalocka include 1 metre grading 23.08 grams per tonne gold (hole 08KLRC033), representing exceptionally high-grade mineralisation. Other results include 6 metres grading 1.38 grams per tonne gold with a 3-metre sub-interval at 1.40 grams per tonne gold (KKA795), and 6 metres grading 1.79 grams per tonne gold including 3 metres at 3.02 grams per tonne gold (KKA796). Hole 01-WE-RC-002 returned 2 metres grading 2.12 grams per tonne gold including 1 metre at 2.23 grams per tonne gold. The nearby Kirkalocka processing plant, with 2 million tonnes per annum capacity and scheduled to restart under Gylden Resources in 2026, offers potential processing infrastructure advantages for future development.

Tallering Project Exhibits Polymetallic Mineralisation Potential

The Tallering project, part of Catalina's newly acquired Mid-West portfolio, has shown historical exploration results indicating the presence of multiple commodities. Unlike other primarily gold-focused projects, Tallering features significant gold, silver, and copper mineralisation, offering a diversified mineralisation profile. Historical exploration identified intervals with notable precious and base metal grades, underscoring the project's polymetallic potential.

Historical data review at Tallering confirmed results such as 1 metre grading 90.3 grams per tonne silver, 2.03 percent copper, and 0.89 grams per tonne gold. Rock chip sampling returned up to 101 grams per tonne gold at surface, indicating significant gold-bearing mineralised material. These findings suggest Tallering merits further systematic exploration to delineate mineralisation extent and geometry. The polymetallic nature of Tallering may provide additional value drivers within Catalina's strategic exploration portfolio.

Advancement of Existing Gold Assets at Peak Hill and Deflector North

Peak Hill and Deflector North are existing gold projects within Catalina's portfolio predating the Mid-West acquisition. The company's historical data review reaffirmed their exploration potential alongside newly acquired projects. Peak Hill's historical drilling revealed gold mineralisation at multiple depths and locations consistent with other portfolio projects.

Historical drilling at Peak Hill included 10 metres grading 1.43 grams per tonne gold from 65 metres depth, incorporating 5 metres grading 2.70 grams per tonne gold, and additional results of 2 metres grading 1.37 grams per tonne gold including 1 metre grading 2.23 grams per tonne gold. Deflector North demonstrated shallow high-grade mineralisation, with aircore drilling intersecting 10 metres grading 3.21 grams per tonne gold from surface. Additional mineralised intercepts along at least 800 metres of strike length suggest significant lateral continuity. These results support Catalina's multi-project exploration strategy.

$3.0 Million Capital Raise Supports Portfolio Growth and Exploration Progress

Catalina Resources completed a $3.0 million capital raising to fund the Mid-West portfolio acquisition and exploration programs. This successful raise enabled the strategic acquisition and comprehensive technical review of the expanded project holdings. The funding provides a solid financial base for systematic assessment of historical datasets and preparation for upcoming field activities.

With funding secured and technical reviews advanced, Catalina is progressing geological assessments, heritage evaluations, and land access activities to prepare for exploration across the portfolio. Field activities have commenced, with multiple priority targets identified for drilling. The capital raise has facilitated rapid advancement since the May 2026 acquisition announcement, leveraging extensive historical data to accelerate target generation and position gold opportunities for drill testing. This financial platform supports execution of Catalina's exploration strategy across its expanded assets.

Comprehensive Historical Data Review Drives Target Generation and Exploration Prioritisation

Catalina's extensive review of historical exploration data across its Mid-West portfolio has been central to its exploration strategy since the May 2026 acquisition. The company compiled, validated, and assessed a substantial volume of historical drilling, geochemical, geological, and geophysical data across its projects. This systematic evaluation has enabled the identification of exploration potential and priority targets for drilling advancement.

The review accounted for varying nature, distribution, and density of historical datasets across different projects, requiring careful validation and presentation of results from multiple previous operators. Catalina combined plan-view imagery, representative cross-sections, tabulated drill results, and full collar details to ensure balanced and accurate presentation. Integrating this historical database with modern exploration techniques and geological interpretations creates opportunities to prioritise targets for future fieldwork, supporting progression toward maiden drilling programs.

Correction to June 2026 Announcement and Data Accuracy Confirmation

On 17 July 2026, Catalina Resources identified an error limited to the highlights section of its original announcement dated 15 June 2026 titled "Review of Historical Data Confirms Significant Gold Results Across Recently Acquired Mid-West Portfolio." The company confirmed the error was confined solely to the highlights section, with the remainder of the announcement accurate and unchanged. An amended announcement with corrected highlights was released alongside the correction notice.

This correction underscores Catalina's commitment to accurate disclosure and validation of information. The announcement was authorised by Executive Director Ross Cotton, who is available for investor enquiries at +61 (0)8 6188 8181. The correction process highlights the company's dedication to ensuring all public disclosures meet standards of accuracy and completeness.

Field Operations Underway with Multiple Priority Targets Set for Drilling

Catalina Resources has initiated field activities across its Mid-West portfolio, advancing multiple priority targets for drilling following the comprehensive historical data review. This transition from data analysis to fieldwork marks a significant milestone in portfolio development. Geological reviews, heritage assessments, and land access preparations have positioned the company to proceed with drilling campaigns. Priority targets identified through historical data review support selection of initial drilling locations.

The portfolio's extensive historical exploration datasets provide a strong foundation for applying modern exploration methods and geological interpretations to enhance target generation and drilling prioritisation. As Catalina moves toward maiden drilling programs, technical assessments indicate multiple opportunities warranting drill testing. The combination of historically productive projects, advanced exploration assets, and underexplored mineralised trends, supported by secured funding and technical reviews, positions Catalina to execute its exploration strategy and drive value creation across its expanded Mid-West holdings.