Key program highlights include:

• Ontario’s Critical Minerals Processing Fund (“CMIF”) helped demonstrate potential to unlock real value at the Georgia Lake Project.
• Collaboration with Queen’s University and STARK Resources demonstrated the effectiveness of government, industry, and research partnership.
• Ore-sorting test work removed approximately 25 to 45 per cent of waste material before downstream processing. ¹
• The upgraded material stream improved ore quality by approximately 1.4x to 1.8x¹.
• Early engineering work identified a potential pathway to materially reduce future crushing and concentrator capital costs by up to 50 per cent¹.
• The Georgia Lake Project further supports Rock Tech’s broader Ontario mine-to-converter strategy alongside the planned Red Rock Converter.

Toronto, Ontario – May 19, 2026 – Rock Tech Lithium Inc. (TSX-V: RCK) (OTCQX: RCKTF) (FWB: RJIB) (WKN: A1XF0V) (the “Company” or “Rock Tech”) is pleased to announce the successful completion of its Ontario Critical Minerals Innovation Fund supported ore-sorting program for the Georgia Lake Lithium Project (“the Project”) in Northern Ontario. The Project is part of Rock Tech’s broader Ontario mine-to-converter strategy and, alongside the planned Red Rock Converter, supports the development of a domestic, made-in-Canada sovereign defence and battery materials supply chain.

Completed in partnership with Queen’s University and STARK Resources, the ore sorting program evaluated UV Laser-based sorting from Optimum N.V. and X-ray Transmission (“XRT”) sensor-based sorting from allmineral Aufbereitungstechnik GmbH & Co. KG for the pre-concentration of mineralized material from the Project (refer to Press Release – Rock Tech Lithium Receives $388,074 in Funding from Ontario’s Critical Minerals Innovation Fund, dated June 23, 2025).

Test work was conducted on two sample sets: selected drill core used to establish and calibrate sorting algorithms, and a blended surface-derived sample used for small-scale testing. Testing was completed under controlled conditions at both ore sorting test facilities using pilot-scale equipment.

The program indicates a pathway to improve process efficiency and reduce future capital and operating costs, which, if successful, could strengthen the long-term competitiveness of the Project and support a more resilient Ontario critical minerals supply chain.

The results provide a foundation to restart key Georgia Lake development activities, including drilling, additional cost-optimizing engineering, and workstreams that support a future Definitive Feasibility Study.

“These results demonstrate how government, industry and research partnerships produce innovation that can directly strengthen the economics and competitiveness of strategically important critical minerals projects,” said Mirco Wojnarowicz, CEO of Rock Tech. “Backed by the Ontario government’s investment through the CMIF, our work positions Georgia Lake to be more resilient and competitive through lithium price cycles and supports Rock Tech’s broader integrated lithium strategy in Northern Ontario, which can help bolster economic security and long-term defence readiness through the development of a made-in-Canada critical minerals supply chain.”

Government-Industry-Research Partnership Unlocks Ontario Critical Minerals Innovation

With support from the Ontario government, through the Critical Minerals Innovation Fund, Rock Tech worked with Queen’s University and STARK Resources, a Germany-based specialist in sensor-based ore sorting and mineral processing technology, to evaluate practical technologies that improve processing efficiency, reduce waste, strengthen the long-term competitiveness of the Project, and support Ontario’s efforts to build a more resilient domestic critical minerals supply chain.

“The Critical Minerals Processing Lab is proud to have collaborated with Rock Tech Lithium and Stark Resources on this important project, which advanced our understanding of lithium mineral processing characteristics and contributed to the advancement of the Georgia Lake project” said Charlotte Gibson, Assistant Professor & Associate Head for Robert M Buchan Department of Mining. “This innovative process development work was made possible through the support of the CMIF, whose investment is helping drive critical minerals processing innovation and strengthen Ontario’s critical minerals value chain.”

Advancing the Next Phase of Development at the Georgia Lake Lithium Project

The results arrive at an important moment for Ontario’s critical minerals sector. While lithium markets have experienced near-term volatility, governments and industry across North America and Europe continue to move aggressively to secure regional battery and critical minerals supply chains.

The Project was the subject of a 2022 Pre-Feasibility Study, which outlined a conventional mine and concentrator development concept based on a 1.0 million tonne per year concentrator. The 2022 PFS contemplated a 9-year mine life, targeted production of approximately 100,000 tonnes per year of 6% spodumene concentrate, and an Indicated Mineral Resource of approximately 10.6 million tonnes at 0.88 per cent Li₂O and an Inferred Mineral Resource of approximately 4.2 million tonnes at 1.00 per cent  Li₂O.

The PFS estimated a pre-tax NPV of USD$223 million, an after-tax NPV of USD$146 million, a pre-tax IRR of 47.8 per cent, and an after-tax IRR of 35.6%, based on an average life-of-mine SC6 price of USD$1,500 per tonne. The PFS also estimated pre-production capital costs of USD$192 million, life-of-project capital costs of USD$291 million, total life-of-project operating costs of USD$536 million, and AISC of USD$1,082 per tonne of concentrate (see Press Release – Rock Tech Lithium completes Pre-Feasibility Study for its Georgia Lake Project dated November 16, 2022).

Against this PFS baseline, the CMIF-supported ore sorting results indicate a potential pathway to further improve project economics in future technical studies. The observed 1.4x to 1.8x upgrade factor means that sorted material can carry materially higher lithium grade into downstream processing than the original feed stream, improving concentrator efficiency and potentially allowing lower-grade material to be considered in future mine planning scenarios.

Similarly, the potential to reduce crushing and concentrator plant capital costs by up to 50 per cent is expected to be driven by a combination of ore sorting and plant specification optimization, providing an opportunity to optimize overall plant design. If confirmed through further engineering and study work, this could materially improve the capital intensity and investment case for the next phase of Georgia Lake development.

As part of this renewed focus, Rock Tech has begun preparations for a potential future drilling program and the next phase of technical studies, including workstreams that could support a Definitive Feasibility Study. These activities would be designed to support resource growth, improve geological confidence, and provide additional data for future mine planning and project development work.

Supporting Rock Tech’s Ontario Mine-to-Converter Strategy

The successful completion of the CMIF-supported ore sorting program strengthens this strategy by indicating a potential pathway to improve the cost structure and development flexibility of the Project. By reducing the amount of waste material processed through the concentrator, ore sorting may support lower operating costs, improve processing efficiency, and provide greater optionality in future mine planning and throughput scenarios.

“Georgia Lake remains foundational to Rock Tech’s Ontario strategy,” said Dirk Harbecke, Chairman of Rock Tech. “These results strengthen the project’s long-term economics and profitability and reinforce the strategic importance of an integrated lithium supply chain in Ontario. As North America and Europe work to secure reliable sources of critical minerals, projects like Georgia Lake and the Red Rock Converter become increasingly important pieces of allied industrial infrastructure.”

Next Steps

Building on the successful outcomes of the program, Rock Tech expects that a future value engineering phase would evaluate the combined impact of ore sorting integration, plant design optimization, and alternative execution strategies across the crushing plant, concentrator plant, and related infrastructure. The results of the CMIF-supported program are conceptual in nature and do not define final economic outcomes, mineral reserve estimates, or plant-scale design changes. Any potential impact on capital costs, operating costs, project economics, mineral reserves, or development plans will require further engineering, feasibility-level studies, and appropriate technical disclosure.

Ontario Innovation Supporting a Stronger Critical Minerals Supply Chain

“Ontario is building a made-in-Canada critical minerals supply chain that creates jobs, strengthens our economic security, and reduces our reliance on foreign adversaries,” said Stephen Lecce, Minister of Energy and Mines. “Through the Critical Minerals Innovation Fund, our government is backing Ontario innovation that lowers costs, unlocks investment, and accelerates responsible mining development in the North. The success of this project shows how Ontario can lead the world in critical minerals, battery materials, and the technologies that will power the future.”

Qualified Persons

The technical content of this press release has been reviewed and approved by Cameron Andrews, P.Eng., General Manager, Canada for Rock Tech Lithium, and Dian Heinrich Page, Pr. Sci. Nat., Principal Consultant – Geology for STARK Resources, an independent Qualified Person, each of whom is a Qualified Person as defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects. Mr. Cameron Andrews, P.Eng. has reviewed and approved the portions of this news release relating to the 2022 Pre-Feasibility Study on Georgia Lake Project, Mr. Dian Heinrich Page, Pr. Sci. Nat., has reviewed and approved the portions relating to the CMIF ore sorting project and value engineering.

The ore-sorting test work results described above are preliminary in nature and based on limited-scale testing. These results have not been incorporated into any current mineral resource or reserve estimate or pre-feasibility or feasibility study, and do not represent defined economic outcomes.

Mineral resources disclosed in this news release that are not mineral reserves do not have demonstrated economic viability.

On behalf of the Management

Mirco Wojnarowicz

CEO, Rock Tech Lithium Inc.

ABOUT ROCK TECH LITHIUM

Rock Tech is enabling the battery age by making the battery industries in Europe and North America more independent and competitive. The Company’s goal is to ensure the supply of high-quality, locally produced lithium — supporting a resilient, sustainable, and transparent value chain from mine to battery-grade material.

Rock Tech relies on responsible sourcing, state-of-the-art and proven technologies, and a clear focus on circular economy principles. The Company’s lithium converter projects in Guben, Germany (24,000 tonnes LHM per year) and Ontario, Canada (up to 32,000 tonnes LCE per year) form the foundation for a stable and regional supply to the battery and automotive industries. The Guben converter has been recognized as a Strategic Project under the EU Critical Raw Materials Act.

The raw materials for Rock Tech’s converter projects are sourced exclusively from verifiably ESG-compliant suppliers. In Canada, Rock Tech relies, among other sources, on its wholly-owned Georgia Lake Project, which ensures a stable and sustainable supply for the North American market and is being developed in close partnership with local Indigenous communities. By integrating recycled materials, the company aims to close the local battery loop.

With its facilities, Rock Tech makes a central contribution to battery-grade material sovereignty and the achievement of climate targets. The company works in partnership with industry, policymakers, and community groups, and is committed to open communication and the highest environmental standards.

For further information: Kerstin Wedemann, Chief Legal & Corporate Officer: info@rocktechlithium.com +49 2102 894 1122

Rock Tech Lithium Inc, 2700-40 Temperance Street, Toronto ON M5H 0B4, CAN.

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION:

Certain statements contained in this news release constitute “forward-looking information” under applicable securities laws and are referred to herein as “forward-looking statements”. All statements, other than statements of historical fact, which address events, results, outcomes or developments that the Company expects to occur are forward-looking statements. When used in this news release, words such as “expects”, “anticipates”, “plans”, “predicts”, “believes”, “estimates”, “intends”, “targets”, “projects”, “forecasts”, “may”, “will”, “should”, “would”, “could” or negative versions thereof and other similar expressions are intended to identify forward-looking statements. In particular, this news release contains forward-looking information relating to, among other things: the potential integration of ore-sorting technology into the Georgia Lake Lithium Project; the anticipated benefits of the ore-sorting program, including potential improvements in process efficiency, reduction of waste material, reductions in future capital and operating costs and the identified pathway to reductions of up to 50 per cent; the potential impact of ore-sorting on project design, plant configuration, throughput, and mine planning; the advancement of the Georgia Lake Lithium Project, including future drilling programs, engineering studies and other workstreams; the potential preparation and timing of a Definitive Feasibility Study; the Company’s ability to improve project economics and capital intensity; and the Company’s broader Ontario mine-to-converter strategy and related development plans.

Forward‑looking information is based on management’s reasonable assumptions, estimates, expectations and opinions as of the date of this news release. Such assumptions include, without limitation: that the results of the ore-sorting test work are representative of the Project’s mineralization and can be replicated at scale; that ore-sorting technology can be successfully integrated into the Project’s process flowsheet and plant design; that the preliminary test work results can be translated into engineering and design optimizations; that anticipated reductions in material throughput to downstream processing circuits will support reductions in plant size, equipment requirements and associated capital costs; that the Company will be able to undertake further engineering, metallurgical test work and drilling activities as planned; that required regulatory, environmental and other approvals will be obtained in a timely manner; that contractors, suppliers and equipment will be available on reasonable terms; and that market conditions, including lithium prices and demand for battery materials, will remain supportive of project development.

Forward-looking information is subject to known and unknown risks, uncertainties, and other factors that may cause actual results to differ materially from those expressed or implied by such statements, including but not limited to, the risk that ore-sorting test work results may not be representative of full-scale operations or may not be replicated in future studies; uncertainties relating to the scalability and integration of ore-sorting technology into the Project; the risk that further engineering or technical studies do not confirm the anticipated reductions in capital or operating costs; the risk that the identified pathway to capital cost reductions, including potential reductions of up to 50 per cent, may not be realized; risks associated with changes in project scope, design or assumptions; uncertainties relating to mineral resource estimates and geological continuity; risks relating to further drilling and exploration activities; permitting, regulatory and environmental risks; risks related to availability of financing, cost inflation, supply chain constraints and contractor performance; fluctuations in lithium prices and market demand; and general economic, market and business conditions. 

Additional risk factors are discussed in the Company’s public disclosure documents available under its profile on SEDAR+. Except as may be required by law, Rock Tech undertakes no obligation and expressly disclaims any responsibility to update or revise any forward-looking information, whether as a result of new information, future events or otherwise.

The post Rock Tech Advances Georgia Lake Lithium Project, Identifies Potential Pathway to Reduce Processing CAPEX by Up to 50 per cent appeared first on Rock Tech Lithium.

• Company Files Preliminary Short Form Base Shelf Prospectus and AIF and continues to advance NASDAQ Dual Listing via MJDS Process
• Final Base Shelf Prospectus, if receipted, will be valid for 25 months and is intended to provide the Company with capital markets flexibility

Toronto, ON, April 24, 2026 — Rock Tech Lithium Inc. (TSX-V: RCK) (OTCQX: RCKTF) (FWB: RJIB) (WKN: A1XF0V) (the “Company” or “Rock Tech”) is pleased to announce that it has  filed a preliminary short form base shelf prospectus (“Base Shelf Prospectus”) and Annual Information Form (“AIF”)  with the securities regulators in each of the provinces and territories of Canada. These filings represent a significant and deliberate step in the Company’s strategic roadmap — which the Company expects may be used, subject to receipt and regulatory approvals, in connection with a potential NASDAQ dual‑listing through the Multi-Jurisdictional Disclosure System (“MJDS”), the established bilateral framework between Canadian and U.S. capital markets regulators.

NASDAQ Dual-Listing Readiness via MJDS

Under the MJDS framework, eligible Canadian issuers may file a U.S. registration statement with the U.S. Securities and Exchange Commission (“SEC”) on Form F‑10, which is primarily based on Canadian disclosure documents, including the Company’s base shelf prospectus. This bilateral system substantially reduces regulatory duplication, cost, and processing time, which may streamline the disclosure process for a NASDAQ cross‑listing, subject to SEC effectiveness and NASDAQ approval. Rock Tech’s existing TSX Venture Exchange (the “TSXV”) listing, combined with its 12-month-plus Canadian reporting history and qualifying public float, positions the Company as MJDS-eligible. The NASDAQ filing remains subject to NASDAQ approval.

25-Month Capital Flexibility Window

The final Base Shelf Prospectus, if receipted, will be valid for a period of 25 months from the date of receipt. During this window, Rock Tech retains the option to access capital markets from time to time and in tranches aligned with project milestones — without requiring a full regulatory review for each potential future offering. This significantly reduces execution risk and cost in time-sensitive financing situations.

Institutional Credibility and Market Profile

A filed Base Shelf Prospectus is commonly used by more established TSXV‑listed issuers and is intended to support corporate governance practices, capital markets readiness, and financing flexibility. It is standard practice among established TSXV-listed resource and technology companies operating at Rock Tech’s scale. The filing reinforces Rock Tech’s positioning as a strategic, investment-ready critical minerals platform.

“This filing is about building institutional-grade capital markets infrastructure for tomorrow. Filing our Shelf Prospectus is an important step in preparing for a potential NASDAQ dual‑listing via the MJDS process. A NASDAQ listing, if achieved, is a transformative re-rating event for Rock Tech. It opens our story to the full depth of the North American institutional investor base at exactly the moment our project pipeline — Guben, Red Rock, Georgia Lake — is entering its most consequential phase,” says Rock Tech’s CEO, Mirco Wojnarowicz.

Rock Tech is advancing toward a NASDAQ dual-listing as a cornerstone of its institutional investor strategy. With the Guben Converter holding EU CRMA Strategic Project status and a full permit and engineering package, the Red Rock Converter project in Ontario, Canada carrying a CAD $2.3 billion NPV and a committed capital structure under the GP/LP framework, and the Georgia Lake Mine in Ontario positioned to create North America’s first fully integrated mine-to-battery-grade lithium supply chain, Rock Tech believes the NASDAQ listing, if completed, could serve as a significant re-rating catalyst — expanding visibility, research coverage, and shareholder liquidity across the world’s deepest capital market.

The post Rock Tech Lithium Announces Plans to Dual-List on NASDAQ and Filing of Short Form Base Shelf Prospectus appeared first on Rock Tech Lithium.

• BMI Group to anchor partnership with CAD $200 million planned investment.
• Up to CAD $30 million in initial non-dilutionary funding to advance the Red Rock Converter towards FID.
• Rock Tech retains full operational control and project execution of the Red Rock Converter.
• Rock Tech’s proven Guben Converter design leveraged to accelerate development and reduce risks. 
• The investment builds on the recently published partnership with Siemens Canada to integrate digital twin and automation technology. 
• The partnership reinforces the strategic critical raw material cooperation between Canada and Europe through BMI Group’s European investor relationships.

Toronto, ON, April 8, 2026 — Rock Tech Lithium Inc. (TSX-V: RCK) (OTCQX: RCKTF) (FWB: RJIB) (WKN: A1XF0V) (the “Company” or “Rock Tech”) is pleased to announce a strategic partnership with the BMI Group Inc. (“the BMI Group”), a Canadian industrial infrastructure platform company, to develop Rock Tech’s lithium converter facility in Red Rock, Ontario, Canada (“the Project”). 

Strategic Partnership Structure and CAD $200 Million Investment

The partnership is expected to be structured as a general partner / limited partner arrangement, with Rock Tech controlling the general partner and the BMI Group acting as the lead limited partner and anchor investor. Under the proposed structure, Rock Tech will retain full control and responsibility for project development, engineering, and operations, as well as all key technical, commercial, and strategic decision-making.

The BMI Group intends to invest CAD $200 million in the Project as part of a broader equity structure to be finalized as the Project advances. Rock Tech, together with additional partners, is expected to contribute additional equity capital over time. The joint objective is to build processing capacity in Canada — strengthening value creation, planning certainty, and supply security for North American industrial off-takers.

“BMI Group’s significant investment is a strong market signal. An experienced Canadian partner committing at this level demonstrates that our project is not only technically and economically compelling — it also enjoys the confidence of professional investors,” says Mirco Wojnarowicz, CEO Rock Tech. “This partnership structure reflects our philosophy: we bring the technology, the operational expertise, and the proven converter concept. Our partners invest the capital with expected high returns. Together, we deliver.”

Initial Funding to Advance Site Development and Feasibility Study 

To support near-term development activities, including a feasibility study, the parties intend to initiate a non-dilutionary funding program of up to CAD $30 million, which is expected to include contributions of both partners and government funding programs, whereby each dollar contributed by Rock Tech shall be matched by the BMI Group and government funding. This funding is targeted to advance engineering, environmental and permitting work, and early site development activities in preparation for a final investment decision by end of 2026. 

The Red Rock Converter is based on Rock Tech’s Guben, Germany project which is fully engineered, fully permitted, and designated as a Strategic Project under the EU Critical Raw Materials Act and where Rock Tech has invested over CAD $ 65 million to date. Leveraging this proven design is expected to reduce development timelines and execution risk and transfer proven technical know-how to Canada.

Strategic Location and Infrastructure at Red Rock

The Red Rock Converter will be developed on the BMI Group’s industrial site in Red Rock, Ontario, approximately 100 km east of Thunder Bay and 60 km south of Rock Tech’s Georgia Lake lithium deposit. The 337-acre site benefits from established infrastructure, including approximately 120 MW of power capacity, access to natural gas, road connectivity and direct access to CPKC Rail’s transcontinental mainline, supporting efficient movement of materials and equipment.

BMI Group’s industrial infrastructure platform is designed to support large-scale project deployment, enabling streamlined site development and reducing timelines from permitting through to construction. By combining Rock Tech’s lithium conversion expertise with BMI’s industrial infrastructure platform and international investor network, the partnership strengthens the Project’s positioning within Canada’s emerging critical minerals, industrial, and defence supply chains.

“As long-horizon developers, BMI Group sees its partnership with Rock Tech as one that will position Northwestern Ontario as a key hub in sovereign defence and battery materials supply chains. Our Red Rock platform provides industrial-ready infrastructure that compresses timelines from site selection to production. This investment reflects our confidence in Rock Tech’s technology, market strategy, leadership, and long-term vision. Through our Canadian and European investor base, we are aligned on the need for secure, allied critical minerals processing capacity and the multi-sector coordination to get it done,” says Paul Veldman, CEO BMI Group.

Siemens Partnership to Deliver Digital Twin and Advanced Automation 

At PDAC 2026, Canada’s largest mining expo, Rock Tech signed a partnership agreement with Siemens to provide state-of-the-art industrial automation technology and a full Digital Twin for the Red Rock Converter. The Digital Twin — a real-time virtual replica of the plant — will enable continuous performance optimization, predictive maintenance, and de-risked commissioning, consistent with the highest operational standards. 

The integration of this technology underlines Rock Tech’s commitment to delivering a world-class, future-proof industrial asset for Canada’s critical minerals value chain, that is fully replicable to scale production with the growing North American lithium demand. These efforts support G7 critical minerals cooperation and position the Red Rock Converter as a reference project for sovereign, resilient, sustainable, and scalable lithium conversion.

Strategic Significance for North America and Europe

Rock Tech is advancing an integrated lithium platform in Canada, linking upstream supply from its Georgia Lake project with downstream production at the Red Rock Converter. The Project is positioned to establish a domestic, IRA- and CUSMA-aligned supply chain from mine to battery-grade lithium salts, strengthening Canada’s critical minerals processing capacity and supporting the development of integrated North American and European supply chains.

The BMI Group’s participation introduces a transatlantic investor base, including Dutch firm Business EQ Investments, aligned with the development of critical minerals infrastructure across Canada and Europe. Together, the partnership combines Rock Tech’s lithium conversion expertise with BMI’s industrial infrastructure platform and international investor relationships.

The advancement of the partnership remains subject to the negotiation of definitive agreements and the satisfaction of customary technical, financial, and regulatory conditions.

On behalf of the Management

Mirco Wojnarowicz

CEO, Rock Tech Lithium Inc.

ABOUT ROCK TECH LITHIUM

Rock Tech is enabling the battery age by making the battery industries in Europe and North America more independent and competitive. The Company’s goal is to ensure the supply of high-quality, locally produced lithium — supporting a resilient, sustainable, and transparent value chain from mine to battery-grade material. 

Rock Tech relies on responsible sourcing, state-of-the-art and proven technologies, and a clear focus on circular economy principles. The Company’s lithium converter projects in Guben, Germany (24,000 tonnes LHM per year) and Ontario, Canada (up to 32,000 tonnes LCE per year) form the foundation for a stable and regional supply to the battery and automotive industries. The Guben converter has been recognized as a Strategic Project under the EU Critical Raw Materials Act.  

The raw materials for Rock Tech’s converter projects are sourced exclusively from verifiably ESG-compliant suppliers. In Canada, Rock Tech relies, among other sources, on its wholly-owned Georgia Lake Project, which ensures a stable and sustainable supply for the North American market and is being developed in close partnership with local Indigenous communities. By integrating recycled materials, the company aims to close the local battery loop. 

With its facilities, Rock Tech makes a central contribution to battery-grade material sovereignty and the achievement of climate targets. The company works in partnership with industry, policymakers, and community groups, and is committed to open communication and the highest environmental standards.

For further information:

Kerstin Wedemann, Chief Legal & Corporate Officer 

press@rocktechlithium.com

+49 2102 894 1122

Rock Tech Lithium Inc., 2700-40 Temperance Street, Toronto ON M5H 0B4 CAN

CAUTIONARY NOTE CONCERNING FORWARD-LOOKING INFORMATION

Certain statements contained in this news release constitute “forward-looking information” under applicable securities laws and are referred to herein as “forward-looking statements”. All statements, other than statements of historical fact, which address events, results, outcomes or developments that the Company expects to occur are forward-looking statements. When used in this news release, words such as “expects”, “anticipates”, “plans”, “predicts”, “believes”, “estimates”, “intends”, “targets”, “projects”, “forecasts”, “may”, “will”, “should”, “would”, “could” or negative versions thereof and other similar expressions are intended to identify forward-looking statements. In particular, this news release contains forward-looking information pertaining to: the Company’s and the BMI Group’s commitment to establish a limited partnership to develop the Project; the BMI Group’s lead investment in the limited partnership; the development of the multi-phase funding structure, including the initial non-dilutionary funding program; the capability of the partners to provide funding; the contribution of the government’s funding programs;  the benefit of leveraging the engineering and permitting work completed in the Guben converter; the costs, schedules, achieving the milestones and the outcome of the due diligence; the parties objective to build processing capacity in Canada; Rock Tech’s opinions, beliefs and expectations regarding the outcome of the Term Sheet and benefits of the BMI Group’s participation in the limited partnership and the benefits of the Siemens partnership to deliver digital twin and advanced automation technology; the achievement of the final investment decision by end of 2026; the Company’s own business strategy, development and exploration opportunities and projects, and plans and objectives of management for the Company’s operations and properties;  the accuracy and reliability of technical data, forecasts, estimates and studies; the Company’s ability to secure funding to finance the multi-phase pathway; the role and potential involvement of provincial and federal authorities; the supply and demand for, deliveries of, and the level and volatility of prices of, intermediate and final lithium products; future exchange and interest rates; general business and economic conditions; the costs and results of development, exploration and operating activities, to procure supplies and other equipment necessary for its business; and the accuracy and reliability of technical data, forecasts, estimates and studies.  

Forward-looking information is based on certain assumptions, estimates, expectations and opinions of the Company and, in certain cases, third-party experts, that are believed by management of Rock Tech to be reasonable at the time they were made. Forward-looking information is derived utilizing numerous assumptions regarding, among other things the parties’ decision to establish a limited partnership, the parties’ strategic, technical, and commercial alignment; the parties’ capability to provide funding; the BMI Group’s decision to invest into the limited partnership and the Project; the inclusion of Siemens’ technology related to the Project;  the accuracy and reliability of technical data, forecasts, estimates and studies;  the parties’ belief to strengthen value creation, planning certainty and supply security for North American industrial off-takers; the efforts to support G7 critical minerals cooperation; the Company’s ability to secure funding to finance the multi-phase pathway; the role and potential involvement of provincial and federal authorities, and German public-sector stakeholders in supporting the objectives of the parties collaboration. The foregoing list is not exhaustive of all assumptions which may have been used in developing the forward-looking information. While Rock Tech considers these assumptions to be reasonable based on information currently available, they may prove to be incorrect and should not be read as a guarantee of future performance or results.  

Forward-looking information is subject to known and unknown risks, uncertainties, and other factors that may cause actual results to differ materially from those expressed or implied by such statements, including but not limited to technical challenges in providing the digital twin and advanced automation technology; geopolitical risks; changes in applicable laws and regulations; regulatory risks; changes in market conditions, including lithium prices, demand for conversion and digital twin technology and availability of financing; volatility; reliance on third-party contractors and suppliers for critical project components. Except as may be required by law, Rock Tech undertakes no obligation and expressly disclaims any responsibility, obligation or undertaking to update or to revise any forward-looking information, whether as a result of new information, future events or otherwise, to reflect any change in Rock Tech’s expectations or any change in events, conditions or circumstances on which any such information is based. The forward-looking information contained herein is presented for the purposes of assisting readers in understanding Rock Tech’s plans, objectives and goals and is not appropriate for any other purposes.  

NEITHER THE TSX VENTURE EXCHANGE NOR ITS REGULATION SERVICES PROVIDER (AS THAT TERM IS DEFINED IN POLICIES OF THE TSX VENTURE EXCHANGE) ACCEPTS RESPONSIBILITY FOR THE ADEQUACY OR ACCURACY OF THIS RELEASE.

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From Guben to Red Rock: Rock Tech and Siemens Form Strategic Partnership to Transfer Proven German Lithium Conversion Expertise to Canada’s Next Strategic Lithium Conversion Project Supporting G7 Critical Minerals Cooperation

• German lithium converter expertise for Canada: Building on the blueprint developed in Guben and in collaboration with Siemens, the Red Rock Converter will define the future of digitally enabled lithium conversion facilities.
• Multi-phase strategic partnership: The cooperation includes the integration of Siemens Digital Twin technology, as well as evaluation of additional Siemens solutions, services and engineering support, with the goal of positioning Red Rock as a blueprint for future converters in Canada and allied markets.
• Red Rock as a Strategic Contributor to G7 Critical Minerals Supply Chain Cooperation: The partnership strengthens German-Canadian cooperation within the G7 Critical Minerals Production Alliance and positions Red Rock as a reference project for resilient, sustainable, and scalable lithium conversion.

Toronto, ON, March 2, 2026 – Rock Tech Lithium Inc. (TSX-V: RCK) (OTCQX: RCKTF) (FWB: RJIB) (WKN: A1XF0V) (the “Company” or “Rock Tech”) and Siemens Canada Ltd. (Siemens) are pleased to announce that they have signed a non-binding Memorandum of Understanding (MoU) laying the foundation for a long-term, multi-phase strategic partnership to develop state-of-the-art lithium conversion capacity. The signing took place at the Canadian Critical Minerals Forum hosted by Natural Resources Canada (NRCan) during Prospectors and Developers Association of Canada Trade Show and Convention (PDAC) – the world’s leading conference for the mining and minerals industry. At the core of the partnership is the application of Siemens’ cutting-edge digitalization technology – in particular Digital Twin solutions – for the development, construction, and operation of Rock Tech’s planned lithium converter in Red Rock, Ontario.

The partnership translates the strategic critical raw material cooperation between Canada and Germany into concrete, on-the-ground collaboration. Siemens brings German industrial and digitalization expertise to a Canadian flagship project built on the blueprint of the fully permitted, shovel-ready Guben converter in Germany. The public signing underscores the strategic importance of Red Rock for Canada’s efforts to build resilient and sovereign midstream capacity for critical minerals – and reinforces broader Canada-Germany cooperation aligned within the G7 critical minerals supply chain priorities. The parties intend to explore available funding opportunities to support deployment of Digital-Twin technology.

Proven Blueprint Enables Accelerated Execution

The Red Rock converter will be developed based on the fully permitted and engineered facility in Guben, Germany. By transferring this blueprint to Canada, development timelines can be shortened, technical risks minimized, and capital efficiency increased. Leveraging the engineering and permitting work completed in Guben materially reduces execution risk and supports a more efficient path toward final investment decision in Canada. The planned production capacity of up to 32,000 tonnes of LCE per year would be sufficient to supply up to 900,000 electric vehicles annually.

“Red Rock will be Ontario’s first lithium conversion facility and is a key project in Canada’s efforts to rapidly establish domestic critical minerals processing capacity,” says Mirco Wojnarowicz, CEO of Rock Tech Lithium. “Together with our Georgia Lake mining project, we are creating a fully vertically integrated supply chain from rock to battery-grade lithium. A critical minerals corridor, entirely in Ontario.”

Parliamentary State Secretary Stefan Rouenhoff emphasizes: „The Federal Ministry for Economic Affairs and Energy strongly welcomes the deepening of business relations between Rock Tech Lithium and Siemens Canada. At a time when secure and sustainable supply chains for critical raw materials are of strategic importance, this partnership sends a powerful signal for the continued expansion of German-Canadian cooperation.”

Digital Twin Optimizes Efficiency and Sustainability

The collaboration with Siemens provides for the deployment of Digital Twin technology across the entire project lifecycle: from the feasibility study through engineering and construction to operation. Through the virtual, data-driven modeling of processes, energy flows, and material streams, Rock Tech can optimize and validate design, efficiency, emissions, and operational reliability before committing capital. “Our partnership with Rock Tech is built on a shared commitment to developing stronger and more resilient domestic critical minerals processing capacity,” says Faisal Kazi, CEO of Siemens Canada. “By leveraging our digital twin and industrial digitalization technologies, we are supporting the development of lithium conversion in Ontario that could ultimately help support stronger battery supply chains within the G7. This collaboration between our two organizations – both at home in Canada and in Germany – underscores our shared vision for energy security, industrial competitiveness, clean growth, and creating a blueprint for next-generation facilities worldwide.”

Strategic Relevance for Canada and the G7

With midstream lithium processing, the project closes a critical gap in the North American battery value chain. Rock Tech and Siemens share the goal of establishing Red Rock as a strategic project within the G7 Critical Minerals Production Alliance. The partnership is intended to serve as a reference model for further industrial ventures in the critical minerals space, thereby helping to strengthen supply security across the G7 nations.

“This second round of partnerships and strategic investments under the Critical Minerals Production Alliance illustrates how Canada and our G7 allies are moving from ambition to action. Canada, our industry, and our partners are putting real capital behind the secure and sustainable critical mineral supply chains that our economies and defence industries rely on,” said the Honourable Tim Hodgson, Minister of Energy and Natural Resources. “By working with companies like Rock Tech Lithium and Siemens, we are helping deliver the minerals the world needs and the prosperity and security Canadians deserve.”

Long-Term Partnership with Growth Potential

The cooperation is structured in multiple phases, initially focusing on the deployment of Digital Twin technology during engineering and in the feasibility study. In the medium term, the parties are evaluating additional Siemens solutions, services and engineering support for the Red Rock converter, as well as the potential expansion of the cooperation to further projects in G7 member countries. Joint applications for public funding will be pursued with NRCan, the Government of Ontario, and through Canadian-German cooperation programs.

On behalf of the Management

Mirco Wojnarowicz

CEO, Rock Tech Lithium Inc.

ABOUT ROCK TECH

Rock Tech is enabling the battery age by making the battery industries in Europe and North America more independent and competitive. The Company’s goal is to ensure the supply of high-quality, locally produced lithium – supporting a resilient, sustainable, and transparent value chain from mine to battery-grade material.

Rock Tech relies on responsible sourcing, state-of-the-art and proven technologies, and a clear focus on circular economy principles. The Company’s lithium hydroxide converter projects in Guben, Germany (24,000 tonnes LHM per year) and Ontario, Canada (up to 32,000 tonnes LCE per year) form the foundation for a stable and regional supply to the battery and automotive industries. The Guben converter has been recognized as a strategic project under the EU Critical Raw Materials Act.

The raw materials for Rock Tech’s converter projects are sourced exclusively from verifiably ESG-compliant suppliers. In Canada, Rock Tech relies, among other sources, on its wholly owned Georgia Lake Project, which ensures a stable and sustainable supply for the North American market and is being developed in close partnership with local Indigenous communities. By integrating recycled materials, the company aims to close the local battery loop.

With its facilities, Rock Tech makes a central contribution to battery-grade material sovereignty and the achievement of climate targets. The company works in partnership with industry, policymakers, and community groups, and is committed to open communication and the highest environmental standards.

For further information:

Kerstin Wedemann, Chief Legal & Corporate Officer,

press@rocktechlithium.com

+49 2102 894 1122

Rock Tech Lithium Inc., 2700-40 Temperance Street, Toronto ON M5H 0B4 CAN.

CAUTIONARY NOTE CONCERNING FORWARD-LOOKING INFORMATION

Certain statements contained in this news release constitute „forward-looking information“ under applicable securities laws and are referred to herein as „forward-looking statements“. All statements, other than statements of historical fact, which address events, results, outcomes or developments that the Company expects to occur are forward-looking statements. When used in this news release, words such as „expects“, „anticipates“, „plans“, „predicts“, „believes“, „estimates“, „intends“, „targets“, „projects“, „forecasts“, „may“, „will“, „should“, „would“, „could“ or negative versions thereof and other similar expressions are intended to identify forward-looking statements. In particular, this news release contains forward-looking information pertaining to: the Company’s and Siemens commitment to strengthen the western battery supply chains; the development of the multi-phase pathway; the parties’ strategic, technical, and commercial alignment on the use of Siemens digital twin technology; the implementation of the digital twin technology; the benefit of leveraging the engineering and permitting work completed in Guben converter;  the costs, schedules and completion dates for developing the digital twin technology;  Rock Tech’s opinions, beliefs and expectations regarding the outcome of the MoU and benefits of the use of Siemens digital twin technology; the replicability of the digital converter model for the development of future lithium conversion facilities in Canada and allied jurisdictions; the inclusion of additional Siemens’ technology related to the Red Rock converter; the Company’s own business strategy, development and exploration opportunities and projects, and plans and objectives of management for the Company’s operations and properties; Siemens’ ability to deliver the digital twin; the pending development and infrastructure of the Red Rock area; the accuracy and reliability of technical data, forecasts, estimates and studies; the Company’s ability to secure funding to finance the multi-phase pathway; the role and potential involvement of provincial and federal authorities, and German public-sector stakeholders in supporting the objectives of the parties collaboration; the supply and demand for, deliveries of, and the level and volatility of prices of, intermediate and final Lithium products; future exchange and interest rates; general business and economic conditions; the costs and results of development, exploration and operating activities, to procure supplies and other equipment necessary for its business; and the accuracy and reliability of technical data, forecasts, estimates and studies;.

Forward-looking information is based on certain assumptions, estimates, expectations and opinions of the Company and, in certain cases, third party experts, that are believed by management of Rock Tech to be reasonable at the time they were made. Forward-looking information is derived utilizing numerous assumptions regarding, among other things the parties’ strategic, technical, and commercial alignment on the use of Siemens digital twin technology; the implementation of the digital twin technology; the replicability of the digital converter model for the development of future lithium conversion facilities in Canada and allied jurisdictions; Siemens’ decision to strategic invest into Red Rock project; the inclusion of additional Siemens’ technology related to the Red Rock converter; Siemens’ ability to deliver the digital twin; the pending development and infrastructure of the Red Rock area; the accuracy and reliability of technical data, forecasts, estimates and studies; the Company’s ability to secure funding to finance the multi-phase pathway; the role and potential involvement of provincial and federal authorities, and German public-sector stakeholders in supporting the objectives of the parties collaboration. The foregoing list is not exhaustive of all assumptions which may have been used in developing the forward-looking information. While Rock Tech considers these assumptions to be reasonable based on information currently available, they may prove to be incorrect and should not be read as a guarantee of future performance or results.

Forward-looking information is subject to known and unknown risks, uncertainties, and other factors that may cause actual results to differ materially from those expressed or implied by such statements, including but not limited to technical challenges in providing the digital twin technology; geopolitical risks; changes in applicable laws and regulations; regulatory risks; changes in market conditions, including lithium prices, demand for conversion and digital twin technology and availability of financing; volatility; reliance on third-party contractors and suppliers for critical project components. Except as may be required by law, Rock Tech undertakes no obligation and expressly disclaims any responsibility, obligation or undertaking to update or to revise any forward-looking information, whether as a result of new information, future events or otherwise, to reflect any change in Rock Tech’s expectations or any change in events, conditions or circumstances on which any such information is based. The forward-looking information contained herein is presented for the purposes of assisting readers in understanding Rock Tech’s plans, objectives and goals and is not appropriate for any other purposes.

NEITHER THE TSX VENTURE EXCHANGE NOR ITS REGULATION SERVICES PROVIDER (AS THAT TERM IS DEFINED IN POLICIES OF THE TSX VENTURE EXCHANGE) ACCEPTS RESPONSIBILITY FOR THE ADEQUACY OR ACCURACY OF THIS RELEASE.

The post From Guben to Red Rock: Rock Tech and Siemens Form Strategic Partnership to Transfer Proven German Lithium Conversion Expertise to Canada’s Next Strategic Lithium Conversion Project Supporting G7 Critical Minerals Cooperation appeared first on Rock Tech Lithium.

Rock Tech Lithium Inc. (“Rock Tech” or the “Company”) welcomes the Province of Ontario’s approval and launch of the CAD $500 million Critical Minerals Processing Fund (“CMPF”), a milestone initiative designed to accelerate the province’s critical minerals processing capacity and strengthen Ontario’s position in the global battery materials supply chain.

Rock Tech’s proposed Lithium Conversion Facility (the “Converter”) in Red Rock, Ontario directly aligns with the CMPF’s mandate to support midstream critical minerals processing projects in the province. The Converter is designed to deliver domestic lithium conversion capacity for battery-grade products, reduce reliance on offshore processing, and anchor downstream investment in Ontario’s electric vehicle and energy storage supply chain.

The CMPF represents a clear signal to global markets that Ontario is committed to scaling up processing capacity needed to support the energy transition. By enabling new critical mineral projects and midstream processing facilities, the fund will help catalyze investment, create jobs, and anchor long-term economic benefits across the province.

As a technology company advancing its Georgia Lake lithium mining project and a lithium conversion facility in Ontario, located only about 60 kilometers apart, Rock Tech sees the CMPF as an important building block in establishing a regional and integrated lithium battery supply chain. The planned design of the Converter in Red Rock is directly based on Rock Tech’s fully permitted, shovel-ready converter in Guben, Germany, which was recently designated an EU Strategic Project under the European Critical Raw Materials Act (CRMA). This foundation gives the Converter a uniquely advanced and de-risked design — positioning it as one of the most technically mature lithium conversion projects in North America.

“We applaud the Government of Ontario for taking bold action to support critical minerals development,” said Mirco Wojnarowicz, CEO of Rock Tech Lithium. “With the CMPF now approved, Ontario is sending a clear signal that it intends to lead in battery materials. Our Converter in Red Rock, built on the engineering and experience behind our EU CRMA Strategic Project in Germany, is exceptionally well-positioned to help deliver the processing capacity the province needs to compete globally.”

Rock Tech has invested more than 350,000 engineering hours and CAD 65 million into the design of its lithium conversion facilities. The Company will continue to work closely with provincial partners, Indigenous communities, and industry stakeholders to support the development of an integrated, competitive, and resilient lithium supply chain in Ontario.

The post Ontario’s Critical Minerals Processing Fund appeared first on Rock Tech Lithium.

“The ResourceEU Plan is a clear signal from Brussels: Europe wants control over its raw materials supply back – and now. Particularly important is that the Commission recognizes lithium for what it is: a strategic critical raw material, not only for e-mobility, but equally for large-scale battery storage and data centers as well as the defense industry.

For Rock Tech, the plan is clear tailwind. We are listed as a strategic raw materials project of the EU, permits are in place, strategic offtakers are ready, and the technology is established with clear ESG standards – we can quickly deliver a substantial contribution to European supply. Moreover, particularly in recent months, we have laid an important foundation for the final investment decision (FID) as the last building block through the revision of our cost structures.

Europe now needs projects that deliver impact in the short term – and that is exactly what we can do. The ResourceEU Plan brings together financing, coordination, and political will with unprecedented clarity for the first time. What is crucial now is that the next step follows. We stand ready to build lithium value creation in Europe and thereby make an important contribution to strategic sovereignty.”

Background: ResourceEU Action Plan

With the ResourceEU Action Plan presented today, the European Commission has further sharpened its raw materials strategy. The document complements the already existing Critical Raw Materials Act (CRMA), which sets binding targets for European raw materials security by 2030 – including 40 percent processing and 25 percent recycling of strategic materials within the EU. The new plan now underpins these goals with concrete instruments, accelerated procedures, and closer coordination between Brussels, Member States, and industry.

Striking is the strong emphasis on the battery value chain, where Europe currently has significant dependencies on third countries. The Commission explicitly names lithium, cobalt, graphite, manganese, and nickel as particularly critical raw materials for battery production and the energy transition. The fact that the Commission classifies battery and defense raw materials as particularly urgent underscores the strategic nature of the plan.

To accelerate the development of a European processing chain, the EU is pooling funding from existing programs through a newly structured “CRM Bank.” Up to three billion euros are to be mobilized over the next twelve months for strategic projects – particularly for initiatives in lithium and battery materials production. The Innovation Fund is also placing its own focus on CleanTech manufacturing and battery raw materials, while the “Battery Booster” provides additional targeted support instruments.

International raw materials policy is also being realigned in the ResourceEU Plan. The EU points to the growing importance of reliable partner countries and explicitly highlights Canada as a country from which European imports of critical raw materials have increased significantly in recent years. The Commission intends to make these partnerships more project-oriented in the future and underpin them with European financing instruments.

Furthermore, the plan focuses on faster implementation of industrial projects in Europe. Accelerated permitting procedures, the expansion of central contact points in Member States, and regulatory adjustments – for example in REACH or the Water Framework Directive – are intended to help make projects with high maturity realizable in the short to medium term.

About the Guben Converter

The Guben Lithium Converter is a pioneering facility in Guben, Brandenburg, Germany, by the German-Canadian company Rock Tech Lithium Inc. This plant is set to become Europe’s first commercial lithium hydroxide refinery aiming to produce 24,000 tonnes of battery grade lithium hydroxide annually (equivalent to approximately 30 GWh of battery capacity) – enough, based on an average consumption of 0.8kg per kWh and 60 kWh per EV, to supply batteries for approximately 500,000 electric vehicles per year.[1]

Strategically located near major automotive and battery manufacturing hubs the Guben Converter is designed to strengthen Europe’s battery supply chain by processing spodumene concentrate secured via leading trading partner C&D Logistics (Qingdao) Co., Ltd. The Converter will utilize advanced crystallization technologies, supplied by GEA Group AG, to ensure high-purity lithium production with minimal environmental impact. The leading international engineering firm Worley Ltd. has been selected as construction partner (EPCM) for the plant.

Recognized as a strategic project under the EU’s Critical Raw Materials Act[2], the Guben Converter underscores Europe’s commitment to securing essential materials for the energy transition. The project is expected to create approximately 200 jobs and represents a significant step toward regionalizing and decarbonizing the lithium supply chain in Europe.

On behalf of the Management

Mirco Wojnarowicz

CEO, Rock Tech Lithium Inc.

ABOUT ROCK TECH

Rock Tech is enabling the battery age by making the battery industries in Europe and North America more independent and competitive. The Company’s goal is to ensure the supply of high-quality, locally produced lithium – supporting a resilient, sustainable, and transparent value chain from mine to battery-grade material.

Rock Tech relies on responsible sourcing, state-of-the-art and proven technologies, and a clear focus on circular economy principles. The Company’s lithium hydroxide converter projects in Guben, Germany (24,000 tonnes LHM per year) and Ontario, Canada (up to 36,000 tonnes LCE per year) form the foundation for a stable and regional supply to the battery and automotive industries. The Guben converter has been recognized as a strategic project under the EU Critical Raw Materials Act.

The raw materials for Rock Tech’s converter projects are sourced exclusively from verifiably ESG-compliant suppliers. In Canada, Rock Tech relies, among other sources, on its wholly owned Georgia Lake Project, which ensures a stable and sustainable supply for the North American market and is being developed in close partnership with local First Nations communities. By integrating recycled materials, the company aims to close the local battery loop.

With its facilities, Rock Tech makes a central contribution to battery-grade material sovereignty and the achievement of climate targets. The company works in partnership with industry, policymakers, and community groups, and is committed to open communication and the highest environmental standards.

For further information:

Dr. Christina Ruta, Vice President External Affairs & Communication, cruta@rocktechlithium.com, +49 2102 894 1130

Rock Tech Lithium Inc., 2700-40 Temperance Street, Toronto ON M5H 0B4 CAN.

CAUTIONARY NOTE CONCERNING FORWARD-LOOKING INFORMATION

Certain statements contained in this news release constitute “forward-looking information” under applicable securities laws and are referred to herein as “forward-looking statements”. All statements, other than statements of historical fact, which address events, results, outcomes or developments that the Company expects to occur are forward-looking statements. When used in this news release, words such as “expects”, “anticipates”, “plans”, “predicts”, “believes”, “estimates”, “intends”, “targets”, “projects”, “forecasts”, “may”, “will”, “should”, “would”, “could” or negative versions thereof and other similar expressions are intended to identify forward-looking statements. In particular, this news release contains forward-looking information pertaining to: the anticipated reduction in operating costs for the Guben Converter and the underlying assumptions supporting the updated OpEx model, including projected savings from transport and logistics, reagent procurement, fixed costs, leach residue reuse, and additional operational efficiencies; the implementation of a revised logistics concept and updated spodumene supply contract; the finalization of binding offtake agreements for leach residues; the expected annual production capacity of 24,000 tonnes of lithium hydroxide; the timing and outcome of the Company’s review of capital expenditures and updated financial model; the Company’s ability to secure project financing including the support and subsidies from government and EU; the anticipated construction timeline, commissioning, and operational start-up of the Guben Converter; and the Company’s broader business strategy, including its role in Europe’s battery supply chain and contribution to the energy transition. Forward-looking information is based on certain assumptions, estimates, expectations and opinions of the Company and, in certain cases, third party experts, that are believed by management of Rock Tech to be reasonable at the time they were made. Forward-looking information is derived utilizing numerous assumptions regarding, among other things: the accuracy of the updated OpEx model and that projected cost reductions will be realized as anticipated; the availability and terms of long-term energy supply agreements and reagent procurement contracts; the successful execution of logistics improvements and leach residue reuse initiatives; the timely completion of CapEx review and financial modelling; the Company’s ability to secure sufficient financing on acceptable terms; the availability of skilled labor, equipment, and materials at projected costs; the stability of commodity prices, exchange rates, and general economic conditions; the absence of material disruptions to supply chains, construction schedules, or permitting processes; the accuracy and reliability of technical data, forecasts, and engineering studies. The foregoing list is not exhaustive of all assumptions which may have been used in developing the forward-looking information. While Rock Tech considers these assumptions to be reasonable based on information currently available, they may prove to be incorrect and should not be read as a guarantee of future performance or results. Forward-looking information is subject to known and unknown risks, uncertainties, and other factors that may cause actual results to differ materially from those expressed or implied by such statements, including but not limited to: the risk that projected OpEx reductions are not achieved or are offset by unforeseen cost increases; delays or failures in securing energy supply agreements, reagent contracts, or offtake arrangements; construction delays, cost overruns, or technical challenges in commissioning the Guben Converter; changes in market conditions, including lithium prices, demand for EV batteries, and availability of financing; regulatory risks, including delays in permitting or changes in applicable laws and regulations; operational risks, including supply chain disruptions, labor shortages, and equipment failures; geopolitical risks, inflationary pressures, and macroeconomic volatility; reliance on third-party contractors and suppliers for critical project components. Except as may be required by law, Rock Tech undertakes no obligation and expressly disclaims any responsibility, obligation or undertaking to update or to revise any forward-looking information, whether as a result of new information, future events or otherwise, to reflect any change in Rock Tech’s expectations or any change in events, conditions or circumstances on which any such information is based. The forward-looking information contained herein is presented for the purposes of assisting readers in understanding Rock Tech’s plans, objectives and goals and is not appropriate for any other purposes.

NEITHER THE TSX VENTURE EXCHANGE NOR ITS REGULATION SERVICES PROVIDER (AS THAT TERM IS DEFINED IN POLICIES OF THE TSX VENTURE EXCHANGE) ACCEPTS RESPONSIBILITY FOR THE ADEQUACY OR ACCURACY OF THIS RELEASE.  

[1] https://www.lithium-battery-manufacturer.com/how-much-lithium-is-needed-for-a-1-kwh-battery/

[2] Please see the Company’s news release dated March 26, 2025 for more information.

The post Statement by the CEO of Rock Tech Lithium on the ResourceEU Plan appeared first on Rock Tech Lithium.

Toronto, ON, October 23, 2025 – Rock Tech Lithium Inc. (TSX-V: RCK) (OTCQX: RCKTF) (FWB: RJIB) (WKN: A1XF0V) (the “Company” or “Rock Tech”) is pleased to announce, further to the OpEx News Release, another significant milestone in the development of the fully permitted Guben Lithium Converter on the German-Polish border. Following a comprehensive design and procurement review, management now estimates the CapEx for commissioning the facility at approximately €680 million, compared to the prior estimate of €730 million, representing a net reduction of approximately €50 million (approximately 6.9%). Together with the previously announced modelled OpEx reductions of approximately 23%, management believes these changes will improve the Project’s competitiveness, positioning Rock Tech as an internationally competitive player in lithium refining and improving the financing basis for the strategic EU raw materials project.

“The combination of modelled operating cost reductions and estimated capital cost savings will fundamentally change the business case for Guben,” explains Henrik Wende, Managing Director of Rock Tech Guben GmbH. “With potential production costs that position us competitively in the international market and simultaneously reduced investment expenditures, we would increase the economic viability of the project. To complete the financing of the Project, these optimizations are decisive factors that we expect to significantly improve our position.”

Estimated CapEx Reduction Through Targeted Optimizations

The estimated cost reduction is the result of a comprehensive review of all project components and targeted adjustments in several areas:

• Optimized Plant Design: Through targeted adjustments in various areas, such as packaging systems, facade elements, the emission measurements, truck scales, or parts of the piping construction, the Company expects to save approximately €22 million, reducing the original estimate of €62 million to approximately €40 million.
• Adjusted Storage Capacities: On-site storage for raw materials, reagents (chemical auxiliaries), and residual materials is expected to be reduced in line with the new logistics concept. Costs in this category are expected to decrease from €35 million to €28 million – a saving of €7 million.
• Process Optimizations: Through changes in process technology that are compatible with permit requirements – for example, for intermediate buffers or individual process stages – the Company expects to save an additional €14 million, reducing the original estimate of €88 million to €74 million.
• Updated Supplier Estimates: Through revised procurement requirements with suppliers and the expansion of procurement sources, potential savings of around €16 million have been identified, reducing the original estimate of €597 million to €581 million.
• Contingency: Additionally, expenses for contingencies were adjusted from €60 million to €57 million – a further estimated saving of €3 million.

These gross savings of approximately €62 million are partially offset by an estimated €12 million of increased costs in other categories including owner’s costs (costs which are necessary to make the plant operational) resulting in a net estimated reduction of €50 million.

Further Optimizations Planned – Competitiveness Sustainably Strengthened

The “Owner’s Costs” – expenses for establishing the operational readiness of the facility – and other external costs are currently the focus of further optimization. Rock Tech expects additional savings potential in these areas by optimized plant design. Furthermore, Rock Tech expects additional saving opportunities upon Project implementation with an external solutions provider and EPCM[2] partner, Worley, detailed engineering and optimization of the sourcing strategy.

As noted in the OpEx News Release, Rock Tech modelled a 23% reduction in OpEx – reduction from approximately €5,033 to €3,878 euros per tonne of lithium hydroxide. Production costs are therefore expected to decrease significantly, which is expected to strengthen the international competitiveness of the Guben converter.

Non-Binding MoU with Sichuan Calciner Technology

In connection with the CapEx optimization program, Rock Tech has signed a non-binding MoU with SCT for a potential collaboration on engineering and process optimization for the Guben Lithium Converter.[3]

The MoU was signed during a high-level business delegation visit to Berlin which included representatives from Sichuan province, CAO Lijun, Member of the Standing Committee of the Sichuan Provincial Party Committee, and Party Secretary of the Chengdu Municipal Party Committee. Chengdu is considered the center of advanced battery production. The delegation met with selected representatives of the German industry, including, amongst others and Rock Tech, Danone Germany, Dreame Technology, Deutsche Messe AG, and the Chinese Chamber of Commerce in Germany.

SCT is a globally recognized engineering expert in the field of lithium refining plants and a founding member of the International Lithium Association. The company operates as a service provider for technologies and plants for cathode materials and has realized many operational production lines for lithium battery materials in China.SCT is specialized in providing engineering design, process technology, procurement, construction and commissioning services. SCT has designed and built over 60 lithium convertor trains of lithium carbonate and lithium hydroxide globally and developed proven proprietary process technology, know-how and equipment

“Should the partnership advance on mutually agreeable terms, the Company will gain access to SCT’s comprehensive expertise in lithium processing,” explains Mirco Wojnarowicz, CEO of Rock Tech. “This potential cooperation could support us in efficiently advancing our project in Guben and benefiting from proven processes. Particularly in the pyro-metallurgical area, we see further potential for optimizing our investment costs through collaboration with SCT in the area of plant design and sourcing.”

SCT’s CEO Jeremy Chang says: “We are delighted to be working with the experienced team from Rock Tech and be able to bring value to the project. SCT can bring expertise and experience in the industry to improve the safety, reliability, and economics of the plant. This collaboration reflects the growing global momentum in decarbonization and electrification and could help establish battery and electric vehicles industry in Germany.”

Update on Merger with Arcore AG

Further to the Company’s news releases dated July 7 and February 20, 2025, Rock Tech intends to cease its activities in Bosnia and Herzegovina and has terminated the previously contemplated joint venture with Arcore for the extraction of lithium-bearing ore, in order to prioritize capital and management attention on the Guben Lithium Converter, the Company’s core project, and other related strategic initiatives.

About the Guben Converter

The Guben Lithium Converter is a pioneering facility in Guben, Brandenburg, Germany, by the German-Canadian company Rock Tech Lithium Inc. This fully permitted refinery is one of Europe’s first commercial lithium facilities and is aiming to produce 24,000 tonnes of battery grade lithium hydroxide annually (equivalent to approximately 30 GWh of battery capacity) – enough, based on an average consumption of 0.8kg per kWh and 60 kWh per EV, to supply batteries for approximately 500,000 electric vehicles per year.[4]

Strategically located near major automotive and battery manufacturing hubs the Guben Converter is designed to strengthen Europe’s battery supply chain by processing spodumene concentrate secured via leading trading partner C&D Logistics (Qingdao) Co., Ltd. The Converter will utilize advanced crystallization technologies, supplied by GEA Group AG, to ensure high-purity lithium production with minimal environmental impact. Global professional services company, Worley, has been selected as EPCM-partner for the plant.

Recognized as a strategic project under the EU’s Critical Raw Materials Act[5], the Guben Converter underscores Europe’s commitment to securing essential materials for the energy transition. The project is expected to create approximately 200 jobs and represents a significant step toward regionalizing and decarbonizing the lithium supply chain in Europe.

On behalf of the Management

Mirco Wojnarowicz

CEO, Rock Tech Lithium Inc.

ABOUT ROCK TECH

Rock Tech is enabling the battery age by making the battery industries in Europe and North America more independent and competitive. The Company’s goal is to ensure the supply of high-quality, locally produced lithium – supporting a resilient, sustainable, and transparent value chain from mine to battery-grade material.

Rock Tech relies on responsible sourcing, state-of-the-art and proven technologies, and a clear focus on circular economy principles. The Company’s lithium hydroxide converter projects in Guben, Germany (24,000 tonnes LHM per year) and Ontario, Canada (up to 36,000 tonnes LCE per year) form the foundation for a stable and regional supply to the battery and automotive industries. The Guben converter has been recognized as a strategic project under the EU Critical Raw Materials Act.

The raw materials for Rock Tech’s converter projects are sourced exclusively from verifiably ESG-compliant suppliers. In Canada, Rock Tech relies, among other sources, on its wholly owned Georgia Lake Project, which ensures a stable and sustainable supply for the North American market and is being developed in close partnership with local Indigenous communities. By integrating recycled materials, the company aims to close the local battery loop.

With its facilities, Rock Tech makes a central contribution to battery-grade material sovereignty and the achievement of climate targets. The company works in partnership with industry, policymakers, and community groups, and is committed to open communication and the highest environmental standards.

For further information:

Dr. Christina Ruta, VP External Affairs & Communication – press@rocktechlithium.com; +49 2102 894 1130

Rock Tech Lithium Inc., 2700-40 Temperance Street, Toronto ON M5H 0B4 CAN.

CAUTIONARY NOTE CONCERNING FORWARD-LOOKING INFORMATION

Certain statements contained in this news release constitute “forward-looking information” under applicable securities laws and are referred to herein as “forward-looking statements”. All statements, other than statements of historical fact, which address events, results, outcomes or developments that the Company expects to occur are forward-looking statements. When used in this news release, words such as “expects”, “anticipates”, “plans”, “predicts”, “believes”, “estimates”, “intends”, “targets”, “projects”, “forecasts”, “may”, “will”, “should”, “would”, “could” or negative versions thereof and other similar expressions are intended to identify forward-looking statements. In particular, this news release contains forward-looking information pertaining to: the anticipated reduction in CapEx for the Guben Lithium Converter and the underlying assumptions supporting the updated financial model, including projected savings from plant design adjustments, storage capacity changes, process optimizations, supplier negotiations, and contingency adjustments and the netting of gross savings against offsetting increases in other categories; the timing and outcome of the Company’s review of Owner’s Costs and other external cost categories, and the potential for further cost reductions during engineering and procurement phases and during implementation with the Company’s EPCM partner Worley Ltd.; the expected benefits of the non-binding MoU with SCT, including potential collaboration on engineering and process optimization; the impact of the cost optimizations and the OpEx update on the Project’s economics, competitiveness and financing readiness, and the Company’s ability to secure project financing on acceptable terms; the anticipated construction timeline, commissioning, and operational start-up of the Guben Lithium Converter; the Company’s intended cessation of activities in Bosnia and Herzegovina related to the previously contemplated joint venture with Arcore, including the expectation that no material financial obligations will arise from ceasing such activities; the Company’s broader business strategy, including its role in Europe’s battery supply chain and contribution to the energy transition. Forward-looking information is based on certain assumptions, estimates, expectations and opinions of the Company and, in certain cases, third party experts, that are believed by management of Rock Tech to be reasonable at the time they were made. Forward-looking information is derived utilizing numerous assumptions regarding, among other things: that projected CapEx reductions will be realized as anticipated and will not be offset by unforeseen cost increases; the successful execution of design changes, logistics concepts, procurement strategies (including updated supplier quotations), and process optimization steps consistent with permit requirements; the availability, performance and timing of EPCM services from Worley Ltd. and other contractors and vendors; the availability and terms of definitive agreements with SCT and other strategic partners; the accuracy and stability of technical parameters, throughput, recoveries and other engineering inputs used in the models; the timely completion of detailed engineering and procurement activities; the Company’s ability to secure sufficient financing on acceptable terms; the availability of skilled labor, equipment, and materials at projected costs; the stability of commodity prices, exchange rates, and general economic conditions; the absence of material disruptions to supply chains, construction schedules, or permitting processes; the accuracy and reliability of technical data, forecasts, and engineering studies. The foregoing list is not exhaustive of all assumptions which may have been used in developing the forward-looking information. While Rock Tech considers these assumptions to be reasonable based on information currently available, they may prove to be incorrect and should not be read as a guarantee of future performance or results. Forward-looking information is subject to known and unknown risks, uncertainties, and other factors that may cause actual results to differ materially from those expressed or implied by such statements, including but not limited to: the risk that projected CapEx reductions are not achieved or are offset by unforeseen cost increases; delays or failures in securing definitive agreements with SCT or other strategic partners; construction delays, cost overruns, or technical challenges in commissioning the Guben Lithium Converter; risks related to the cessation of activities in Bosnia and Herzegovina, including potential counterparties’ claims or unforeseen financial obligations; changes in market conditions, including lithium prices, demand for EV batteries, and availability of financing; regulatory risks, including delays in permitting or changes in applicable laws and regulations; operational risks, including supply chain disruptions, labor shortages, and equipment failures; geopolitical risks, inflationary pressures, and macroeconomic volatility; reliance on third-party contractors and suppliers for critical project components. Except as may be required by law, Rock Tech undertakes no obligation and expressly disclaims any responsibility, obligation or undertaking to update or to revise any forward-looking information, whether as a result of new information, future events or otherwise, to reflect any change in Rock Tech’s expectations or any change in events, conditions or circumstances on which any such information is based. The forward-looking information contained herein is presented for the purposes of assisting readers in understanding Rock Tech’s plans, objectives and goals and is not appropriate for any other purposes.

NEITHER THE TSX VENTURE EXCHANGE NOR ITS REGULATION SERVICES PROVIDER (AS THAT TERM IS DEFINED IN POLICIES OF THE TSX VENTURE EXCHANGE) ACCEPTS RESPONSIBILITY FOR THE ADEQUACY OR ACCURACY OF THIS RELEASE.  

[1] All amounts in euros (€) unless otherwise noted.

[2] Engineering, Procurement, Construction Management

[3] The MoU is subject to identification of scope of work and does not create binding obligations; any transaction remains subject to negotiation of definitive agreements and customary approvals. There can be no assurance that such definitive agreements will be concluded.

[4] https://www.lithium-battery-manufacturer.com/how-much-lithium-is-needed-for-a-1-kwh-battery/

[5] Please see the Company’s news release dated March 26, 2025 for more information.

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Toronto, ON, October 2, 2025 – Rock Tech Lithium Inc. (TSX-V: RCK) (OTCQX: RCKTF) (FWB: RJIB) (WKN: A1XF0V) (the “Company” or “Rock Tech”) is pleased to announce that its subsidiary,Rock Tech Guben GmbH and ArcelorMittal Eisenhüttenstadt GmbH have signed a letter of intent with the aim to identify and promote regional synergies in the industry. The aim of the cooperation is to further strengthen the competitiveness and innovative power of the industrial location Brandenburg.

The agreement focuses on two key areas:

1. Security of Skilled Workforce and Qualification:

Rock Tech and ArcelorMittal, together with the Qualification Center for Business (QCW), are examining closer cooperation on training and qualifying skilled workers. Planned measures include the development of joint training models and the use of the practice center in Eisenhüttenstadt for specific qualifications, such as welding certificates or forklift licenses. The objective is to actively counteract regional skilled labor shortages and create employment perspectives in the region.

• Quality Assurance and Laboratory Services:

Cooperation with the Research and Quality Center (FQZ) in the areas of laboratory services and quality assurance in heavy industry is being evaluated. This aims to help maintain and further develop the high-quality standards in production.

Beyond these, additional opportunities for cooperation are being explored, such as:

• Networking of services to strengthen a local service landscape
• Exchange in recycling and further use of by-products from production
• Examination of joint solutions in rail logistics and shunting services at the Guben location

Strengthening Regional Cooperation

With this initiative, both companies underline their commitment to the sustainable development of the East Brandenburg region. The partnership is intended to increase local industrial value creation, foster innovation, and further develop the region as an attractive site for industry and employees.

“The cooperation with ArcelorMittal Eisenhüttenstadt is an important step for us to secure the skilled workers needed for our converter right on site. Thus, the cooperation also represents a clear commitment to the region, which has long been considered structurally weak. With ArcelorMittal as a traditional partner, we are very confident to set the right impulses for sustainable development and industrial strength in East Brandenburg,” said Henrik Wende, Managing Director of Rock Tech Guben GmbH.

Steffen Lüdemann, Managing Director and Site Manager of Arcelor Mittal Eisenhüttenstadt: “We have long been an integral part of the region. Cooperating with Rock Tech, we can now make an additional contribution to strengthening East Brandenburg as a modern industrial location with qualified skilled workers. Moreover, we can mutually benefit from each other’s professional expertise and further improve our already high standards.”

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Toronto, ON, September 17, 2025 – Rock Tech Lithium Inc. (TSX-V: RCK) (OTCQX: RCKTF) (FWB: RJIB) (WKN: A1XF0V) (the “Company” or “Rock Tech”) is pleased to announce a significant milestone in the development of its Guben Lithium Converter. Following a comprehensive update to its operational expenditure (OpEx) model, the Company anticipates a reduction of approximately 23% in the modeled cost of producing lithium hydroxide – from approximately EUR 5,033 per ton to EUR 3,878 per ton (based on an annual output target of 24,000 tons of lithium hydroxide). This equates to an annual project OpEx reduction of approximately EUR 27.7 million, from EUR 120.8 million to EUR 93.1 million.

The modeled reduction reflects a combination of updated cost inputs across several key areas.

• Transport and Logistics: Transport and logistics expenses are projected to decline by EUR 11.7 million (47%), from EUR 25 million to EUR 13.3 million following the adoption of a revised logistics concept, which accounts for 42.2% of the total projected decrease in OpEx. The most significant component of this decrease stems from an updated spodumene supply contract with more favorable Incoterms, reducing shipping obligations and expected logistics costs by EUR 10.4 million.
•  
• Reagent Procurement: Revised supplier offers reduce reagent procurement costs by EUR 2.8 million, from EUR 25.9 million to EUR 23.1 million, contributing approximately 10.1% of the total projected savings.
•  
• Fixed Costs: Refined estimates of annual fees, office expenses, insurance coverage and IT costs are projected to decrease by EUR 4.2 million, from EUR 10 million to EUR 5.8 million, accounting for approximately 15.2 % of total OpEx savings.

• Leach Residue Reuse: The Company expects a positive cost impact of up to EUR 6.3 million by reusing leach residues instead of disposing of them, under a memorandum of understanding with Schwenk Zement GmbH & Co KG, a well-known German company in the cement industry. This initiative contributes approximately 22.7% of the total OpEx reduction. The companies intend to finalize binding offtake agreements for the leach residues in due course.
•  
• Additional Savings: In addition, the Company expects to further reduce its costs through maintenance savings and refined labor estimates, resulting in an additional EUR 2.7 million in project OpEx reduction.

Increased energy costs are expected to be mitigated by a sustainable long-term energy supply agreement currently under negotiation with Enertrag SE.[1] This cost improvement positions Rock Tech as an internationally competitive player in the lithium-refining market.

“This significant cost reduction is a major step forward,” says Mirco Wojnarowicz, CEO of Rock Tech. “In today’s volatile market, establishing a lean and competitive project is not just beneficial—it’s essential. For our equity and debt financing partners, OpEx is one of the most critical benchmarks for project viability. By reducing our modeled costs by 23%, we are not only improving competitiveness but also significantly strengthening the financing case for Guben.”

The Company is also conducting a parallel review of capital expenditures (CapEx). An updated financial model and full profitability analysis will be published once the review is complete in the coming weeks.

Rock Tech remains committed to building one of Europe’s first lithium hydroxide converters, supporting the transition to sustainable mobility with reliable, local supply of critical battery materials.

About the Guben Converter

The Guben Lithium Converter is a pioneering facility in Guben, Brandenburg, Germany, by the German-Canadian company Rock Tech Lithium Inc. This plant is set to become Europe’s first commercial lithium hydroxide refinery aiming to produce 24,000 tonnes of battery grade lithium hydroxide annually (equivalent to approximately 30 GWh of battery capacity) – enough, based on an average consumption of 0.8kg per kWh and 60 kWh per EV, to supply batteries for approximately 500,000 electric vehicles per year.[2]

Strategically located near major automotive and battery manufacturing hubs the Guben Converter is designed to strengthen Europe’s battery supply chain by processing spodumene concentrate secured via leading trading partner C&D Logistics (Qingdao) Co., Ltd. The Converter will utilize advanced crystallization technologies, supplied by GEA Group AG, to ensure high-purity lithium production with minimal environmental impact. The leading international engineering firm Worley Ltd. has been selected as construction partner (EPCM) for the plant.

Recognized as a strategic project under the EU’s Critical Raw Materials Act[3], the Guben Converter underscores Europe’s commitment to securing essential materials for the energy transition. The project is expected to create approximately 200 jobs and represents a significant step toward regionalizing and decarbonizing the lithium supply chain in Europe.

On behalf of the Management

Mirco Wojnarowicz

CEO, Rock Tech Lithium Inc.

ABOUT ROCK TECH

Rock Tech is enabling the battery age by making the battery industries in Europe and North America more independent and competitive. The Company’s goal is to ensure the supply of high-quality, locally produced lithium – supporting a resilient, sustainable, and transparent value chain from mine to battery-grade material.

Rock Tech relies on responsible sourcing, state-of-the-art and proven technologies, and a clear focus on circular economy principles. The Company’s lithium hydroxide converter projects in Guben, Germany (24,000 tonnes LHM per year) and Ontario, Canada (up to 36,000 tonnes LCE per year) form the foundation for a stable and regional supply to the battery and automotive industries. The Guben converter has been recognized as a strategic project under the EU Critical Raw Materials Act.

The raw materials for Rock Tech’s converter projects are sourced exclusively from verifiably ESG-compliant suppliers. In Canada, Rock Tech relies, among other sources, on its wholly owned Georgia Lake Project, which ensures a stable and sustainable supply for the North American market and is being developed in close partnership with local First Nations communities. By integrating recycled materials, the company aims to close the local battery loop.

With its facilities, Rock Tech makes a central contribution to battery-grade material sovereignty and the achievement of climate targets. The company works in partnership with industry, policymakers, and community groups, and is committed to open communication and the highest environmental standards.

[1] There can be no assurance that the ongoing negotiations with Enertrag SE will result in a definitive agreement or that any such agreement, if completed, will be on terms favorable to the Company or will achieve the anticipated benefits.

[2] https://www.lithium-battery-manufacturer.com/how-much-lithium-is-needed-for-a-1-kwh-battery/

[3] Please see the Company’s news release dated March 26, 2025 for more information.

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Each Unit consists of one common share of the Company and one common share purchase warrant of the Company, exercisable at price of $1.17 to purchase one additional common share of the company for a period of three years from the date of issuance thereof.

The Company intends to use the net proceeds raised from the Offering to fund the advancement of the Guben Converter and for general corporate and working capital purposes.

The third tranche of the Offering was completed pursuant to Section 2.3 of Ontario Securities Commission Rule 72-503 – Distributions Outside of Canada and pursuant to the listed issuer financing exemption under Part 5A of National Instrument 45-106 – Prospectus Exemptions (the “Listed Issuer Financing Exemption”), accordingly, the securities issued in connection with the third tranche of the Offering are not subject to a hold period in accordance with applicable Canadian securities laws. The Company has filed on its SEDAR+ profile on August 29, 2025 an offering document pursuant to Form 45-106F19 (the “LIFE Offering Document”) in accordance with the Listed Issuer Financing Exemption. The LIFE Offering Document can be accessed under the Company’s profile at www.sedarplus.ca and on the Company’s website at https://rocktechlithium.com/. Closing of the Offering remains subject to receipt of final approval of the TSX Venture Exchange. In connection with the third tranche closing of the Offering, the Company paid a cash commission of $57,964.50 to certain finders.

This news release does not constitute an offer to sell or a solicitation of an offer to buy nor shall there be any sale of any of the securities in any jurisdiction in which such offer, solicitation or sale would be unlawful, including any of the securities in the United States of America. The securities have not been and will not be registered under the United States Securities Act of 1933, as amended (the “U.S. Securities Act”) or any state securities laws and may not be offered or sold within the United States or to, or for account or benefit of, U.S. Persons (as defined in Regulation S under the U.S. Securities Act) unless registered under the U.S. Securities Act and applicable state securities laws, or an exemption from such registration requirements is available.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

On behalf of the Company,

Mirco Wojnarowicz

CEO

ABOUT ROCK TECH LITHIUM

Rock Tech is enabling the battery age by making the battery industries in Europe and North America more independent and competitive. The Company’s goal is to ensure the supply of high-quality, locally produced lithium – supporting a resilient, sustainable, and transparent value chain from mine to battery-grade material.

Rock Tech relies on responsible sourcing, state-of-the-art and proven technologies, and a clear focus on circular economy principles. The Company’s lithium hydroxide converter projects in Guben, Germany (24,000 tonnes LHM per year) and Ontario, Canada (up to 36,000 tonnes LCE per year) form the foundation for a stable and regional supply to the battery and automotive industries. The Guben converter has been recognized as a strategic project under the EU Critical Raw Materials Act.

The raw materials for Rock Tech’s converter projects are sourced exclusively from verifiably ESG-compliant suppliers. In Canada, Rock Tech relies, among other sources, on its wholly owned Georgia Lake Project, which ensures a stable and sustainable supply for the North American market and is being developed in close partnership with local First Nations communities. By integrating recycled materials, the company aims to close the local battery loop.

With its facilities, Rock Tech makes a central contribution to battery-grade material sovereignty and the achievement of climate targets. The company works in partnership with industry, policymakers, and community groups, and is committed to open communication and the highest environmental standards.

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