Homerun confirms preferred +4N silica purification pathway as CAPEX planning advances

Disclaimer and Information on Forward Looking Statements: Rockstone and Homerun Resources Inc. (“Homerun“) caution investors that any forward-looking information provided herein is not a guarantee of future results or performance, and that actual results may differ materially from those in forward-looking information as a result of various factors. The reader is referred to Homerun’s public filings for a more complete discussion of such risk factors and their potential effects, which may be accessed through its documents filed on SEDAR+ at www.sedarplus.ca. All statements in this report, other than statements of historical fact, should be considered forward-looking statements. Much of this report is comprised of statements of projection, interpretation and strategic analysis. Such statements involve known and unknown risks, uncertainties and other factors that may cause actual results, developments or events to differ materially from those anticipated in these forward-looking statements. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Forward-looking statements in this report include statements, interpretations, conclusions, strategic observations and analytical opinions regarding Homerun Resources Inc.’s silica purification strategy, the Santa Maria Eterna silica sand district, the planned 350,000 tonne per year 3N primary purification plant, the preferred +4N purification pathway, future +4N plant configurations, the potential development of 5N silica and advanced materials, the integration of the Enduring Energy Storage system and the broader Silica Valley industrial strategy in Bahia, Brazil. Forward-looking statements include expectations regarding the Company’s ability to produce +99.99% SiO₂ (+4N) silica through calcination followed by acid leaching, the potential use of 3N feedstock from the planned primary purification plant, the technical significance of the Dorfner Anzaplan test work, the advancement of process design, mass balance, equipment definition and AACE Class 5 CAPEX development, and the potential comparison between traditional calcination and Enduring-integrated thermal pre-treatment configurations. Forward-looking statements also include expectations regarding the potential role of +4N silica as a commercial product and as feedstock for future +99.999% SiO₂ (5N) silica and advanced materials development, the potential integration of thermal energy storage into silica purification, the potential operational, capital or efficiency advantages of the Enduring Energy Storage system, and the Company’s ability to develop an integrated value chain combining high-purity silica, energy storage, solar glass and advanced silica materials. Such statements are based on current expectations, test work, technical assumptions, management objectives and publicly disclosed information and are inherently subject to significant uncertainty. Technical and Processing Risks: Statements regarding the preferred +4N processing pathway, including calcination followed by acid leaching, are forward-looking and based on test work, technical review and current process assumptions. There can be no assurance that the preferred pathway will perform as expected at pilot, demonstration or commercial scale, that target purity levels will be achieved consistently, or that recoveries, impurity removal, reagent consumption, energy requirements, equipment performance and operating conditions will correspond to current expectations. CAPEX and Engineering Risks: Statements regarding process design, mass balance, equipment definition, AACE Class 5 CAPEX development and future +4N plant configurations are preliminary and subject to refinement. AACE Class 5 estimates are early-stage conceptual estimates and may vary materially as engineering advances. There can be no assurance that final capital costs, operating costs, construction timelines, equipment requirements or plant configurations will correspond to current estimates, expectations or analytical observations contained in this report. Enduring Energy Storage Integration Risks: Statements regarding the potential integration of the Enduring Energy Storage system into Homerun’s Silica Valley industrial facilities, including the use of silica sand as a thermal energy storage medium and the potential supply of industrial heat and power to purification operations, are forward-looking and subject to technical, engineering, integration and commercial risks. There can be no assurance that the Enduring system will be successfully integrated into the purification process, that it will reduce the need for traditional calcination infrastructure, or that it will deliver the anticipated capital, operating, energy efficiency or strategic advantages. 3N Feedstock and Upstream Dependency Risks: The planned +4N purification pathway is expected to use feedstock from Homerun’s planned 350,000 tonne per year 3N primary purification plant. Any delay, cost increase, technical issue, permitting issue, financing constraint or operational challenge affecting the 3N plant could affect the timing, economics or feasibility of the +4N plant. There can be no assurance that the 3N plant will be completed, commissioned or operated as currently contemplated, or that it will produce feedstock meeting the specifications required for reliable +4N production. 5N and Advanced Materials Risks: Statements regarding future 5N silica, advanced materials development and higher-value product streams are forward-looking and remain subject to additional research, testing, process development, engineering, customer qualification, market acceptance and financing. There can be no assurance that +4N silica will be successfully converted into 5N silica or advanced materials, that such products will meet commercial specifications, or that Homerun will be able to develop, finance, construct or operate downstream advanced materials facilities. Commercialization and Market Risks: Statements regarding commercial sales of +4N silica, higher-value silica products, solar glass, energy storage applications or advanced materials are forward-looking and subject to market demand, pricing, customer qualification, competition, substitution risk, supply chain conditions and broader industrial trends. There can be no assurance that Homerun will secure customers, offtake agreements, strategic partners or commercial margins sufficient to support the planned purification and advanced materials strategy. Partnership and IP Risks: Statements regarding Dorfner Anzaplan, the U.S. Department of Energy’s National Renewable Energy Laboratory / National Laboratory of the Rockies, Alliance for Sustainable Energy, LLC, and related intellectual property arrangements are based on publicly disclosed information and management’s current plans. There can be no assurance that these technical relationships, intellectual property rights or development partnerships will result in successful commercialization, cost advantages, additional financing, strategic transactions or long-term operational benefits. Permitting, Construction and Execution Risks: The development of purification plants, thermal energy storage infrastructure, solar glass facilities and related industrial operations in Bahia, Brazil will require permitting, engineering, procurement, construction, financing, skilled personnel, infrastructure access and regulatory compliance. There can be no assurance that permits will be obtained on expected timelines, that construction will proceed as planned, or that Homerun will be able to execute its Silica Valley strategy without delays, cost overruns or operational challenges. Financing and Strategic Development Risks: Statements regarding Homerun’s ability to advance CAPEX planning, build 3N, +4N or future 5N facilities, integrate energy storage, develop solar glass operations or execute a vertically integrated silica value chain are forward-looking and depend on the availability of capital, market conditions, strategic partnerships, project financing, regulatory approvals and corporate execution. There can be no assurance that the Company will secure sufficient financing on acceptable terms or at all, or that its broader Silica Valley strategy will be implemented as currently contemplated. Author’s Analysis and Interpretation Risks: Statements in this report regarding the strategic significance of the +4N purification pathway, the potential value of Enduring Energy Storage integration, the importance of CAPEX planning, the move from 3N feedstock to +4N products and future 5N potential, and Homerun’s broader positioning in high-purity silica, energy storage, solar glass and advanced materials represent the author’s independent analysis and interpretation based on publicly available information. Such statements should not be interpreted as guarantees of technical success, commercial outcomes, financing results, shareholder value creation or future market performance. Accordingly, readers should not place undue reliance on forward-looking information. Actual results may differ materially from those expressed or implied in the forward-looking statements contained in this report. Rockstone and the author of this report do not undertake any obligation to update any statements made herein except as required by applicable law. Past performance, comparisons to other companies, projects, commodities, technologies, jurisdictions, feasibility studies, capital-market events or industry trends are provided for illustrative purposes only and should not be considered indicative of future results.

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