TORONTO, September 15, 2026 /CNW/ – Rock Tech Lithium Inc. (TSXV: RCK) (OTCQX: RCKTF) (FWB: RJIB) (WKN: A1XF0V)(the “Company” or “Rock Tech”) is pleased to announce an upsize of its previously announced non-brokered private placement, pursuant to which the Company may now issue up to an aggregate of 9,219,301 units (the “Units“) at a price of C$0.65 per Unit for aggregate gross proceeds of up to approximately C$6.0 million (the “Offering“), and the closing of the second tranche of the Offering.

The second tranche consisted of 5,402,493 Units for aggregate gross proceeds of C$3.51 million. To date, the Company has issued an aggregate of 8,171,793 Units at a price of C$0.65 per Unit for aggregate gross proceeds of approximately C$5.31 million in connection with the Offering.

An aggregate of C$3.25 million of the Offering was subscribed for by a strategic investor, with whom the Company expects to enter into a strategic equity participation at the project level in its fully permitted Guben lithium hydroxide converter in Guben, Brandenburg, Germany.

Each Unit consists of one common share in the capital of Rock Tech (the “Common Shares“) and one-half of one Common Share purchase warrant (each whole Common Share purchase warrant, a “Warrant“). Each Warrant entitles the holder thereof to purchase one Common Share (a “Warrant Share“) at an exercise price of $0.90 per Warrant Share for a period of 36 months following the date of issuance of such Warrant, subject to and in accordance with the terms and conditions of the certificate evidencing such Warrant, including adjustment in certain circumstances.

In connection with the Offering, the Company paid aggregate cash commissions of C$162,602.70 to eligible finders (collectively, the “Finders”) and issued an aggregate of 253,155 finders’ warrants (the “Finders’ Warrants”) to such Finders. Each Finders’ Warrant entitles the holder thereof to acquire one Common Share at an exercise price of C$0.65 per Common Share for a period of 24 months from the date of issuance.

The Company intends to use the net proceeds raised from the Offering to advance the Definitive Feasibility Study for the Georgia Lake Mine and the development of the Red Rock Converter in Ontario, and for general corporate and working capital purposes.

Closing of the Offering remains subject to receipt of final approval of the TSX Venture Exchange. All  securities  issued  in  connection  with  the  Offering  will  be  subject to a statutory hold period of four months plus a day from the date of issuance in accordance with applicable securities legislation in Canada.

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.

Change of Chief Financial Officer

As Rock Tech continues to strengthen its presence in Canada, the function of the Chief Financial Officer (“CFO“) is transitioning to the Company’s Canadian operations and the Company has appointed Mr. Derek Sobel as new CFO. 

Mr. Christopher Wright has decided to relocate his primary place of residence to Australia. The Company would like to extend its sincere thanks to Mr. Wright, who has served as CFO since May 2025, for his leadership and significant contributions to the Company and wishes him every success for the future.

All dollar amounts in this news release are expressed in Canadian dollars.

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 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 intended to be sourced exclusively from verifiably ESG-compliant suppliers. In Canada, Rock Tech relies, among other sources, on its wholly-owned Georgia Lake Project, which is intended to provide 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 intends to contribute 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. 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 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 press release contains forward-looking information pertaining to the completion of the Offering, including the receipt of final acceptance of the Offering and approval of the Finders’ cash commissions and Finders’ Warrants by the TSX Venture Exchange; the expectations of the Company’s management regarding the use of proceeds and the use of the available funds following completion of the Offering; receipt of all necessary approvals for the Offering; Rock Tech’s opinions, beliefs and expectations regarding the Company’s business strategy, development and exploration opportunities and projects, including the completion of the strategic equity participation contemplated by the Company with the strategic investor; and plans and objectives of management for the Company’s operations and properties.

The forward-looking information in this news release is based on several key assumptions and material factors. Such assumptions include the receipt of final acceptance of the TSX Venture Exchange. The forward-looking information also assumes favorable market conditions for lithium. Forward-looking statements by their nature are based on assumptions and involve known and unknown risks, uncertainties and other factors which may cause the actual results to differ materially from the forward-looking statements, including general business, economic, competitive, political and social uncertainties; delay or failure to receive regulatory approvals; changes in project plans; the risk that regulatory approvals may not be obtained on the anticipated timeline or at all; and risks, uncertainties and other factors discussed in the Company’s public disclosure documents available under its profile on SEDAR+. No assurances can be given that any of the events anticipated by the forward-looking statements will transpire or occur, and the Company cautions the reader not to place undue reliance upon any such forward-looking statements. The Company does not intend, nor does it assume any obligation to update or revise any of the forward-looking statements, whether as a result of new information, changes in assumptions, future events or otherwise, except to the extent required by applicable law.

The post Rock Tech Lithium Announces Upsize of Previously Announced Private Placement to Up to C$6.0 Million appeared first on Rock Tech Lithium.

In addition to the investor roundtable, Rock Tech’s management will participate in several leading investor conferences and high-level industry roundtables throughout September. These engagements will provide opportunities to connect with institutional and retail investors, industry participants and key stakeholders, while highlighting Rock Tech’s strategic vision, key catalysts and milestones expected to advance the Company’s projects.

Conference Schedule:

In Detail:

• CEO Connect and Investment Opportunity, hosted by Stuefe und Partner, September 12, 2026, Heidelberg, Germany
• Fastmarkets European Battery Raw Materials, September 15 – 17, 2026, Budapest, Hungary
• “The German-Canadian Critical Raw Materials Partnership – Moving from Diplomacy to Projects” at Schulich School of Business in cooperation with Consulate General of the Federal Republic of Germany – Panelist on “Canada-Germany Partnership in Critical Minerals”, September 16, 2026, Toronto, Canada
• Rock Tech’s virtual Investor Roundtable, September 21, 2026

https://www.appairtime.com/event/cbca7fc5-e808-49c0-876c-ab7239206a07

• Apaton Investor Event, hosted by Apaton on September 23, 2026, Munich, Germany
• Muskoka Capital Event 2026, organized by CEM on September 25-27, 2026, Muskoka, Canada
• Conference „Resource Policy as the Key to Sovereignty and Prosperity“ hosted by Konrad Adenauer Stiftung in cooperation with European Initiative for Energy Security – Panelist on „Mined in Germany?“ on September 28, 2026, Berlin, Germany
• CEO Connect at cross-sector industry initiative „Made For Germany“ – Annual Assessment, on September 30, 2026 in Berlin, Germany

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 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 intended to be sourced exclusively from verifiably ESG-compliant suppliers. In Canada, Rock Tech relies, among other sources, on its wholly-owned Georgia Lake Project, which is intended to provide 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 intends to contribute 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. 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.

The post Rock Tech Lithium Intensifies Investor Engagement with Roundtable and September 2026 Conference Participations appeared first on Rock Tech Lithium.

• Rock Tech Lithium and Thunder Bay Pulp and Paper jointly recognized with the 2026 Northern Innovators Award at CENCAN 2026
• Award recognizes an innovative Ontario partnership evaluating crude tall oil as a locally sourced flotation reagent for lithium processing
• Project is supported by the Province of Ontario through the Critical Minerals Innovation Fund and includes research expertise from Queen’s University

TORONTO, September, 9, 2026 /CNW/ – Rock Tech Lithium Inc. (TSXV: RCK) (OTCQX: RCKTF) (FWB: RJIB) (WKN: A1XF0V) (the “Company” or “Rock Tech”) is pleased to announce that Rock Tech and Thunder Bay Pulp and Paper have jointly received the 2026 Northern Innovators Award, presented by Mining Life & Exploration News at the Cen-Can Expo Gala Dinner in Thunder Bay.

The award recognizes the organizations’ cross-sector collaboration to evaluate crude tall oil—a by-product of Ontario’s pulp and paper industry—as a potential locally sourced flotation reagent for lithium processing.

Supported by the Province of Ontario through its Critical Minerals Innovation Fund (“CMIF”), the project brings together Rock Tech, Thunder Bay Pulp and Paper and Queen’s University to explore how an existing forestry by-product could be used to support more sustainable, competitive and resilient critical minerals processing in Ontario.

“This award recognizes how bringing Northern Ontario industries together can solve practical challenges and create new opportunities,” said Mirco Wojnarowicz, CEO of Rock Tech. “Our collaboration with Thunder Bay Pulp and Paper and Queen’s University shows the potential for Ontario’s strengths in forestry, critical minerals and research to be combined to advance locally developed solutions. We thank Mining Life & Exploration News for this recognition and the Province of Ontario for supporting the project through CMIF.”

If successfully validated, crude tall oil could provide a more localized source of flotation reagents, create a potential new application for an Ontario forestry by-product and inform future technical and economic optimization of Rock Tech’s Georgia Lake Lithium Project.

The initiative supports Rock Tech’s broader strategy to establish an integrated mine-to-converter lithium supply chain in Northern Ontario, connecting the Georgia Lake Project with the proposed Red Rock Lithium Converter.

Additional information regarding the CMIF-supported crude tall oil project is available on Rock Tech’s website.

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 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 intended to be sourced exclusively from verifiably ESG-compliant suppliers. In Canada, Rock Tech relies, among other sources, on its wholly-owned Georgia Lake Project, which is intended to provide 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 intends to contribute 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. 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.

The post Rock Tech Lithium and Thunder Bay Pulp and Paper Receive 2026 Northern Innovators Award appeared first on Rock Tech Lithium.

Today, in connection with the closing of the first tranche of the Offering, Rock Tech issued 2,923,147 Units at a price of $0.65 per Unit for aggregate gross proceeds of $1,900,045. The Company has entered into irrevocable subscription agreements for an additional tranche of the Offering representing gross proceeds of $3,250,000 and expects to complete such tranche on or before August 28, 2026, subject to the satisfaction of customary closing conditions.

More than 60% ($3,250,000) of the Offering was subscribed by a new strategic investor which is concurrently entering into a strategic equity participation at the project level in the Company’s fully permitted Guben lithium hydroxide converter in Brandenburg, Germany. The investor’s decision to also participate in this Offering reflects its confidence in Rock Tech’s overall asset management strategy.  Further details of the Guben transaction will be announced separately after final close of the transaction.

The balance of the Offering was subscribed by Canadian investors, including first-time investors in Rock Tech, together with existing shareholders. The Company welcomes the further broadening of its Canadian shareholder base as it advances the Georgia Lake Mine and the Red Rock Converter in Ontario.

The Company intends to use the net proceeds raised from the Offering to advance the Definitive Feasibility Study for the Georgia Lake Mine and the development of the Red Rock Converter in Ontario, and for general corporate and working capital purposes.

Each Unit consists of one common share in the capital of Rock Tech (the “Common Shares”, with such Common Shares comprising the Units, the “Unit Shares”) and one-half of one Common Share purchase warrant (each whole Common Share purchase warrant, a “Warrant”). Each Warrant entitles the holder thereof to purchase one Common Share (a “Warrant Share”) at an exercise price of $0.90 per Warrant Share for a period of 36 months following the date of issuance of such Warrant, subject to and in accordance with the terms and conditions of the certificate evidencing such Warrant, including adjustment in certain circumstances.

In connection with the Offering, the Company may pay eligible finders a cash commission equal to 6% of the gross proceeds raised from subscribers introduced by such finders and, subject to the approval of the TSX Venture Exchange, may issue broker warrants equal to 6% of the aggregate number of Units sold to subscribers introduced by such finders. Each broker warrant will entitle the holder thereof to acquire one Common Share at an exercise price of $0.65 per Common Share for a period of 24 months from the date of issuance.

Closing of the Offering remains subject to receipt of final approval of the TSX Venture Exchange.

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.

All dollar amounts in this news release are expressed in Canadian dollars.

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

The post Rock Tech Lithium Closes First Tranche of a CAD$5.2 Million Private Placement with the Majority having been Subscribed by New Strategic Investor in the Guben Converter appeared first on Rock Tech Lithium.

Four weeks ago, I wrote to you that Canada changes everything. This letter is going to be shorter, because the update is simple: we are executing on what we promised, and the environment around us is moving in the same direction as our strategy. Allied governments, including Canada and Germany, and industrial partners are increasingly recognizing the importance of exactly the kind of projects we are building.

1. Red Rock: The DFS Has Started

We have commenced the Definitive Feasibility Study (“DFS”) for the Red Rock Converter, the most important technical milestone on the path to a final investment decision. The DFS is designed to support bankability — engineering depth comparable to FEL3, with a capital cost accuracy of +/-10%.  Early engineering and value-engineering work indicate a credible pathway to materially lower capital costs than assumed in the 2024 Scoping Study. The completed DFS will validate those improvements.

2. Georgia Lake & Victory: Building the Ontario Resource Base

Georgia Lake is the upstream foundation of our made-in-Ontario mine-to-converter strategy. It is an increasingly important strategic asset as Ontario builds domestic critical minerals processing capacity. Georgia Lake combines what few spodumene projects in Ontario can offer at the same time: advanced permitting, a completed PFS, and outstanding infrastructure, grid power and direct access to the Trans-Canada Highway. This combination positions Georgia Lake to be first to market among Ontario’s spodumene projects. And we are working on the first offtake agreement. The second half of 2026 is about growing it on both axes — resource size and project economics:

• Drilling. A drill program is planned for the second half of 2026. The program is designed to materially expand the current ~15 million-tonne resource and test the potential for new discoveries across the roughly 90% of the property that remains unexplored. “Based on historical drill results and geological continuity, we expect the resource to grow toward 30 million tonnes” says our General Manager Canada, Cameron Andrews.   
• DFS. The Georgia Lake DFS contract award is targeted for late August. A key workstream is validating the ore-sorting results we published in May — waste rejection of 25–45% before processing, a pathway to reduce crushing and concentrator capital by up to 50%, and operating cost reductions of approximately 20%. If the DFS confirms these results, Georgia Lake becomes one of the lowest-capital-intensity spodumene projects in North America.

In June, we acquired an option to earn a 100% interest in the Victory Project, a 9,875-hectare lithium exploration property near Kenora from Bounty Gold Corp. and Last Resort Resources Ltd. Victory hosts two known spodumene-bearing pegmatite systems with high-grade surface sampling of up to 5.11% Li₂O and neither has ever been drill tested. Initial exploration later this year will focus on mapping, sampling and targeted drilling to evaluate what we believe could become another meaningful source of feedstock for our Ontario platform.

“Our pre-acquisition technical review indicates that an exploration target in excess of 50 million tons could be possible, if drilling is successful”, adds Cameron Andrews.

The logic is straightforward. A converter without captive feedstock is permanently exposed to spot markets. We are building an Ontario resource base — mine, exploration and land consolidation pipeline, and converter within one province, one jurisdiction, one supply chain. Every metric tonne of resource we add strengthens the long-term competitiveness and economics of the entire platform.

3. Canada Is Moving — Fast

Since my last letter, the policy environment has accelerated. Federal and provincial governments are increasingly recognizing that securing critical minerals and shoring up allied supply chains requires domestic processing capacity.

• The federal government launched the Canada Critical Minerals Accelerator, a CAD 2 billion fund making equity investments, loan guarantees, and offtake agreements to bring projects to FID faster and signed its first agreement within days of launch. These instruments map directly onto our GP/LP structure.
• The First and Last Mile Fund provides CAD 1.5 billion for mining and enabling infrastructure through 2030.
• Canada’s new Defence Industrial Strategy enables the stockpiling of critical minerals under the Defence Production Act. Lithium is now formally a security asset.
• In Ontario, our application under the province’s CAD 500 million Critical Minerals Processing Fund continues to advance through the review process, with the assessment now moving toward its later stages. The province has additionally committed nearly CAD 3.1 billion to support Indigenous participation and ownership in the critical minerals supply chain. This is directly relevant to the partnerships we are building with First Nation communities connected to our projects.
• A small but telling proof point: Ontario’s Critical Minerals Innovation Fund awarded Rock Tech another funding; this time CAD 262,500 to validate crude tall oil, a forestry byproduct, as a low-emission flotation reagent — connecting lithium processing to Ontario’s forestry sector. We shared this announcement with Ontario’s Associate Minister of Forestry and Forest Products, Kevin Holland, last week.

Canada has a bold vision, backed by government policies and action, to become the preferred supplier of responsibly sourced critical minerals and set the foundation for its mine-to-converter strategy. The entire North American supply chain is now being assembled in real time.

4. Guben

Guben remains fully permitted, shovel-ready, and strategically valuable. Strategic investor discussions are advancing on the disciplined terms I described in my letter from June. We are also advancing our internal work on establishing a R&D hub as the anchor of our lithium conversion IP — the knowledge base every future converter is built on.

The next months are about delivery: DFS milestones, drill results, and financing steps. I look forward to reporting on each.

Best regards,

Mirco Wojnarowicz

Chief Executive Officer, Rock Tech Lithium Inc., July 2026

The post From Strategy to Execution appeared first on Rock Tech Lithium.

• Binding offtake with Geneva-based commodity trading house Transamine SA secures long-term commercial pathway for Georgia Lake’s full planned production
• The agreement preserves Rock Tech’s ability to process Ontario lithium into battery-grade chemicals at its planned Red Rock Lithium Converter
• The agreement provides for a development prepayment facility of up to US$80 million.
• The offtake agreement covers a seven-year initial term, starting in 2028, with an option to extend for up to five additional years, covering up to 100,000 dry metric tonnes per year

Toronto, Ontario – July 27, 2026 – Rock Tech Lithium Inc. (“Rock Tech” or the “Company”) (TSX-V: RCK) (OTCQX: RCKTF) is pleased to announce that it has signed a binding long-term offtake agreement dated July 24, 2026, with Transamine SA (“Transamine”), a Geneva-based global commodity trading house, for spodumene concentrate produced at the Company’s wholly owned Georgia Lake project (“Georgia Lake”) in Ontario, Canada. The agreement supports a long-term commercial pathway for Georgia Lake while reflecting growing market confidence in Rock Tech’s integrated Ontario strategy. The agreement currently contemplates deliveries beginning in 2028, subject to the contractual delivery provisions and any adjustments agreed by the parties following completion of the definitive feasibility study.

The agreement marks another important step in advancing Rock Tech’s integrated Ontario lithium supply chain: it secures long-term commercial pathway for full planned production of an estimated minimum of 100,000 dry metric tonnes per year of spodumene concentrate from Georgia Lake’s while maintaining flexibility for the Company to capture additional value through domestic lithium conversion. The agreement also provides a framework for a development prepayment facility of up to US$80 million to support the Georgia Lake Project.

Binding Offtake for Georgia Lake Concentrate

Under the agreement, Transamine will purchase spodumene concentrate from Rock Tech over an initial term of seven years, starting in 2028, which may be renewed annually by mutual agreement for up to five additional years. Contracted volumes ramp from 50,000 dry metric tonnes during the first year of deliveries to 100,000 dry metric tonnes annually thereafter, subject to a ±10% tolerance in favour of Rock Tech and terms and conditions of the agreement. The quantities and timeline will be reviewed and mutually adjusted based on the results of the definitive feasibility study.

Pricing references the Fastmarkets spodumene concentrate benchmark (min. 6% Li₂O, CIF China), adjusted for delivered grade. The agreement incorporates a qualified floor price subject to specified resale-market, inflation-adjustment and project-financing provisions.

Option to Convert into Battery-Grade Lithium Chemicals

The agreement is structured to support Rock Tech’s integrated Ontario mine-to-conversion strategy. Should Rock Tech determine that the concentrate is required for its Red Rock Converter, the parties will convert the arrangement into an offtake for battery-grade lithium hydroxide monohydrate and/or battery-grade lithium carbonate, subject to a mutually agreed amendment establishing the applicable specifications, conversion mechanism, pricing, delivery schedule and other terms. Transamine’s take-or-pay commitment continues through and after any such conversion, adjusted for the applicable product, price and delivery terms.

This flexibility allows Rock Tech to sell spodumene concentrate while preserving the option to supply converted lithium chemicals to battery and cathode customers when the planned Red Rock Lithium Converter is developed and commissioned.

“This agreement demonstrates how Rock Tech is turning critical minerals ambition into execution,” said Mirco Wojnarowicz, Chief Executive Officer of Rock Tech. “It provides a long-term, commercial foundation for the Georgia Lake mine’s future production, strengthens our financing pathway, and – together with the prepayment facility – brings us another step closer to building the integrated mine-to-converter platform, with the flexibility to convert raw material into battery-grade lithium chemicals through our Red Rock Lithium Converter and to support a stable, secure supply of battery-grade lithium for Canada and its allies.”

Up to US$80 Million Development Prepayment Facility

To support Georgia Lake project, the agreement provides for a framework for a development prepayment facility of up to US$80 million. The prepayment carries interest at three-month CME Term SOFR plus 2.95% per annum, accruing quarterly, and would be repaid by set-off against concentrate deliveries over a 24-month period beginning with first delivery. Any amount outstanding after that period would become due and payable in cash.

The exact amount and terms of the prepayment will be documented separately and agreed once the definitive feasibility study is complete. Availability of the facility is subject to the satisfaction (or waiver by the buyer) the following conditions precedent:

• full project equity financing committed
• all material permits, licences, land access rights and environmental approvals in place
• no material adverse change
• legal, financial and technical due diligence satisfactory to the buyer
• no unresolved title, land, litigation, environmental or community matter that could delay production
• final assays, impurity profile, metallurgical test work and product specifications available and satisfactory to the buyer.

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 intended to be sourced exclusively from verifiably ESG-compliant suppliers. In Canada, Rock Tech relies, among other sources, on its wholly-owned Georgia Lake Project, which is intended to provide 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 intends to contribute 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.

About Transamine

Founded in 1953 in Paris, Transamine  is an independent and privately held commodity trading company specializing in non-ferrous raw materials. Transamine is headquartered in Geneva, Switzerland and has offices throughout key markets including Australia, China, South Africa, South America, India and the United States. Transamine is a full-service company providing worldwide raw material sourcing, marketing, finance, and investment and specializes in all aspects of non-ferrous raw materials, as well as lithium in form of spodumene, production and trade..

Transamine is committed to upholding the highest ethical standards and continuously enhancing its ESG due diligence, by working closely with business partners to strengthen supply chain traceability, transparency, and promote effective communication.

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, CA

The post Rock Tech Lithium Strengthens Made-in-Ontario Lithium Supply Chain with Binding Spodumene Offtake Agreement, Securing Up to US$80 Million Prepayment Facility for Georgia Lake Project appeared first on Rock Tech Lithium.

Dear Friends and Shareholders,

Four weeks ago, I wrote to you that Canada changes everything. This letter is going to be shorter, because the update is simple: we are executing on what we promised, and the environment around us is moving in the same direction as our strategy. Allied governments, including Canada and Germany, and industrial partners are increasingly recognizing the importance of exactly the kind of projects we are building.

1. Red Rock: The DFS Has Started

We have commenced the Definitive Feasibility Study (“DFS”) for the Red Rock Converter, the most important technical milestone on the path to a final investment decision. The DFS is designed to support bankability — engineering depth comparable to FEL3, with a capital cost accuracy of +/-10%.  Early engineering and value-engineering work indicate a credible pathway to materially lower capital costs than assumed in the 2024 Scoping Study. The completed DFS will validate those improvements.

2. Georgia Lake & Victory: Building the Ontario Resource Base

Georgia Lake is the upstream foundation of our made-in-Ontario mine-to-converter strategy. It is an increasingly important strategic asset as Ontario builds domestic critical minerals processing capacity. Georgia Lake combines what few spodumene projects in Ontario can offer at the same time: advanced permitting, a completed PFS, and outstanding infrastructure, grid power and direct access to the Trans-Canada Highway. This combination positions Georgia Lake to be first to market among Ontario’s spodumene projects. And we are working on the first offtake agreement. The second half of 2026 is about growing it on both axes — resource size and project economics:

• Drilling. A drill program is planned for the second half of 2026. The program is designed to materially expand the current ~15 million-tonne resource and test the potential for new discoveries across the roughly 90% of the property that remains unexplored. “Based on historical drill results and geological continuity, we expect the resource to grow toward 30 million tonnes” says our General Manager Canada, Cameron Andrews.   
• DFS. The Georgia Lake DFS contract award is targeted for late August. A key workstream is validating the ore-sorting results we published in May — waste rejection of 25–45% before processing, a pathway to reduce crushing and concentrator capital by up to 50%, and operating cost reductions of approximately 20%. If the DFS confirms these results, Georgia Lake becomes one of the lowest-capital-intensity spodumene projects in North America.

In June, we acquired an option to earn a 100% interest in the Victory Project, a 9,875-hectare lithium exploration property near Kenora from Bounty Gold Corp. and Last Resort Resources Ltd. Victory hosts two known spodumene-bearing pegmatite systems with high-grade surface sampling of up to 5.11% Li₂O and neither has ever been drill tested. Initial exploration later this year will focus on mapping, sampling and targeted drilling to evaluate what we believe could become another meaningful source of feedstock for our Ontario platform.

“Our pre-acquisition technical review indicates that an exploration target in excess of 50 million tons could be possible, if drilling is successful”, adds Cameron Andrews.

The logic is straightforward. A converter without captive feedstock is permanently exposed to spot markets. We are building an Ontario resource base — mine, exploration and land consolidation pipeline, and converter within one province, one jurisdiction, one supply chain. Every metric tonne of resource we add strengthens the long-term competitiveness and economics of the entire platform.

3. Canada Is Moving — Fast

Since my last letter, the policy environment has accelerated. Federal and provincial governments are increasingly recognizing that securing critical minerals and shoring up allied supply chains requires domestic processing capacity.

• The federal government launched the Canada Critical Minerals Accelerator, a CAD 2 billion fund making equity investments, loan guarantees, and offtake agreements to bring projects to FID faster and signed its first agreement within days of launch. These instruments map directly onto our GP/LP structure.
• The First and Last Mile Fund provides CAD 1.5 billion for mining and enabling infrastructure through 2030.
• Canada’s new Defence Industrial Strategy enables the stockpiling of critical minerals under the Defence Production Act. Lithium is now formally a security asset.
• In Ontario, our application under the province’s CAD 500 million Critical Minerals Processing Fund continues to advance through the review process, with the assessment now moving toward its later stages. The province has additionally committed nearly CAD 3.1 billion to support Indigenous participation and ownership in the critical minerals supply chain. This is directly relevant to the partnerships we are building with First Nation communities connected to our projects.
• A small but telling proof point: Ontario’s Critical Minerals Innovation Fund awarded Rock Tech another funding; this time CAD 262,500 to validate crude tall oil, a forestry byproduct, as a low-emission flotation reagent — connecting lithium processing to Ontario’s forestry sector. We shared this announcement with Ontario’s Associate Minister of Forestry and Forest Products, Kevin Holland, last week.

Kevin Holland, MPP for Thunder Bay–Atikokan / Dirk Harbecke, Chairman, Rock Tech Lithium

Canada has a bold vision, backed by government policies and action, to become the preferred supplier of responsibly sourced critical minerals and set the foundation for its mine-to-converter strategy. The entire North American supply chain is now being assembled in real time.

4. Guben

Guben remains fully permitted, shovel-ready, and strategically valuable. Strategic investor discussions are advancing on the disciplined terms I described in my letter from June. We are also advancing our internal work on establishing a R&D hub as the anchor of our lithium conversion IP — the knowledge base every future converter is built on.

The next months are about delivery: DFS milestones, drill results, and financing steps. I look forward to reporting on each.

Best regards,

Mirco Wojnarowicz

Chief Executive Officer, Rock Tech Lithium Inc., July 2026

The post Shareholder Letter — July 2026 appeared first on Rock Tech Lithium.

• Ontario’s Critical Minerals Innovation Fund has awarded Rock Tech $262,500 to evaluate and validate the use of locally-sourced crude tall oil, a by-product of Ontario’s pulp and paper sector, as a potential flotation reagent for lithium processing, supporting supply chain development and cross-sector collaboration.
• The project will be completed in collaboration with Thunder Bay Pulp and Paper and Queen’s University, bringing together Ontario-based industrial supply, critical minerals development and research expertise.
• The project aims to connect Ontario’s forestry and critical minerals sectors by creating a potential new market for forestry-derived products in lithium processing.
• The project is intended to evaluate whether locally sourced crude tall oil could support more localized reagent supply, provide data for future technical and economic optimization work and reduce reliance on imported or conventional processing inputs.
• The project is intended to evaluate whether locally sourced crude tall oil could, if successfully validated, support more localized and potentially lower-emission battery and critical minerals supply chains, including supply chains relevant to advanced manufacturing and energy storage applications, support future technical and economic optimization work and reduce reliance on imported or conventional processing inputs.
• The initiative supports Rock Tech’s broader Ontario mine-to-converter strategy, including the Georgia Lake Lithium Project and the proposed Red Rock Lithium Converter, strengthening a made-in-Ontario critical minerals supply chain while creating new opportunities across multiple sectors of the provincial economy.
• This marks Rock Tech’s second CMIF-supported initiative, following its previously announced ore sorting program, which identified a potential pathway to reduce future crushing and concentrator capital costs by up to 50% based on preliminary test work on representative Georgia Lake material and subject to further engineering, validation and integration into future technical studies.
• This project will also evaluate further opportunities to improve efficiency, reduce operating costs and strengthen the economics of the Georgia Lake Project.
  
  

Toronto, Ontario – July 13, 2026 – Rock Tech Lithium Inc. (“Rock Tech” or the “Company”) (TSX-V: RCK) (OTCQX: RCKTF) is pleased to announce that it has been awarded $262,500 through Ontario’s Critical Minerals Innovation Fund (“CMIF”) to evaluate the use of crude tall oil, a by-product of Ontario’s pulp and paper industry, as potentially locally sourced  flotation reagent for lithium processing.

Crude tall oil may have potential application in mineral flotation processes used during processing to separate lithium-bearing minerals from waste rock, with the objective of improving processing efficiency while supporting a more localized supply chain by leveraging a pulp and paper by-product. This by-product produced by Ontario’s pulp and paper sector and could serve as a new way for Ontario’s pulp and paper industry to monetize this output while enhancing the sustainability and affordability of lithium processing in Ontario, if successfully validated and incorporated into future project design.

Similar to Rock Tech’s recently announced completion of its CMIF-supported ore sorting program (refer to Press Release – Rock Tech Advances Georgia Lake Lithium Project, Identifies Potential Pathway to Reduce Processing CAPEX by Up to 50 per cent, dated May 19, 2026), this project is designed to evaluate whether locally sourced crude tall oil could support future processing efficiency, reduce reliance on imported or conventional reagents and inform future cost-optimization work for the Georgia Lake Project.

Strengthening Ontario’s Critical Minerals Supply Chain Through Innovation

The project arrives at an important moment for Ontario’s critical minerals sector, as the Province of Ontario has identified the development of domestic critical minerals supply chains as a strategic priority, including supply chains supporting advanced manufacturing and energy storage.[1]

The use of crude tall oil as a flotation reagent represents an opportunity to connect two strategically important Ontario industries. By evaluating whether a by-product from the province’s forestry sector can be utilized in lithium processing, the project seeks to improve the sustainability and competitiveness of domestic critical minerals production while creating additional value from existing industrial supply chains.

“We’re proud to have the continued support of the Government of Ontario through this latest intake of the Critical Minerals Innovation Fund,” said Mirco Wojnarowicz, CEO of Rock Tech. “The future of critical minerals competitiveness will be driven not only by what we mine, but by how we process and innovate. This project brings together Ontario’s strengths in critical minerals, forestry, and research to evaluate a practical solution that could reduce emissions, strengthen project economics and create new opportunities for domestic industry. It demonstrates how innovation can help build a more resilient critical minerals supply chain – here in Canada and among allied countries.”

Government, Industry, and Research Working Together

With support from the Province of Ontario through the CMIF, Rock Tech and its project partners will evaluate a practical innovation with direct commercial application. The initiative brings together public investment, industrial expertise, and research capacity to explore technologies that may improve competitiveness while supporting the development of cleaner and more efficient processing methods.

“Northwestern Ontario has the people, resources, and expertise needed to lead the next generation of critical mineral development. This investment will help strengthen connections between our mining and forestry sectors while supporting innovation right here in our region,” said Kevin Holland, MPP for Thunder Bay–Atikokan. “I’m pleased to see Rock Tech, Thunder Bay Pulp and Paper, and Queen’s University working together on a project that has the potential to create new opportunities for local industry and strengthen Ontario’s critical mineral supply chain. Investments through the Critical Minerals Innovation Fund are helping ensure that the economic benefits of resource development stay in Northern Ontario, creating jobs and supporting long-term growth for our communities.”

“This CMIF investment supports an ongoing collaboration between the Critical Minerals Processing Lab at Queen’s University and Rock Tech, advancing lithium process development in Ontario.” said Charlotte Gibson, Assistant Professor and Associate Head at Queen’s University’s Robert M. Buchan Department of Mining. “We are excited to continue working with Rock Tech on this important initiative, which has the potential to establish local reagent supply chains, improving the sustainability and resilience of lithium production in the province.”

The project also highlights the growing opportunity to strengthen ties between Ontario’s natural resource sectors. By creating potential new demand for forestry-derived products within critical minerals processing, the initiative will support the province’s industrial diversification, domestic supply chains, and economic prosperity.

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

The project forms part of Rock Tech’s broader Ontario strategy, which includes the Georgia Lake Project and the proposed Red Rock Converter in Northwestern Ontario.

Together, these projects are intended to support a vertically integrated, made-in-Ontario lithium supply chain linking domestic resource development with downstream processing capacity. As demand for battery materials continues to grow across North America and Europe, including supporting an expanding range of capabilities in the defence sector, innovative initiatives like this may help strengthen the competitiveness, sustainability and long-term resilience of Ontario’s critical minerals sector and broader economy.

TECHNICAL DISCLOSURE

The scientific and technical information in this news release has been reviewed and approved by Cameron Andrews, P.Eng., General Manager, Canada for Rock Tech Lithium, a “qualified person” as defined in National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”).

The project described in this news release is intended to evaluate crude tall oil, a by-product of Ontario’s pulp and paper industry, as a potential flotation reagent for lithium processing. No new mineral resource estimate, mineral reserve estimate, metallurgical test results, preliminary economic assessment, pre-feasibility study or feasibility study are being disclosed in this news release. The potential processing applications and benefits described herein are preliminary in nature and remain subject to completion of test work, validation and further engineering review.

The reference to the Company’s previously announced ore-sorting program and the potential pathway to reduce future crushing and concentrator capital costs by up to 50% is based on the Company’s prior disclosure dated May 19, 2026, and remains subject to the qualifications, assumptions and limitations described therein. No new ore-sorting test results or updated capital cost estimates are being disclosed in this news release.

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 intended to be 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 intends to contribute 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] https://news.ontario.ca/en/release/1007581/ontario-takes-action-to-build-critical-minerals-supply-chain

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• Rock Tech Lithium has entered into an option agreement to acquire a 100% interest in the Victory Project, a 9,875-hectare lithium exploration property in Northwestern Ontario from Bounty Gold Corp. and Last Resort Resources Ltd.

• The Victory Project hosts two known spodumene-bearing LCT pegmatite occurrences at surface, with selective grab samples returning up to 5.11% Li₂O at the Last Resort pegmatite and up to 3.48% Li₂O at the Bounty pegmatite.

• The two known spodumene-bearing occurrences are located approximately 6 km apart, defining a broad linear area of exploration interest.

• The Property benefits from proximity to key infrastructure, including the Trans-Canada Highway, rail access, electrical transmission infrastructure and a natural gas pipeline, supporting exploration activities and, if warranted by future exploration results and technical studies, potential future development opportunities.

• The Victory Project represents an early step in Rock Tech’s regional consolidation strategy, aimed at building a broader Ontario lithium supply chain to support future economic prosperity and continued sovereignty, anchored by Georgia Lake and connected to the proposed Red Rock Converter.

Toronto, Ontario – June 22, 2026 – Rock Tech Lithium Inc. (“Rock Tech” or the “Company”) (TSX-V: RCK) (OTCQX: RCKTF) is pleased to announce that it has entered into an option agreement dated June 17, 2026 (the “Option Agreement”) with Bounty Gold Corp. (“Bounty”) and Last Resort Resources Ltd. (“Last Resort”) to acquire a 100% interest in the Victory Project (the “Victory Project”, the “Project” or the “Property”), a 9,875-hectare lithium exploration property located approximately 45 km east of Kenora in Northwestern Ontario. If exploration is successful and subject to further technical evaluation, the Victory Project could represent a potential future source of lithium-bearing minerals for Rock Tech’s planned made-in-Ontario lithium supply chain, supporting the province’s EV and battery ecosystem and its emerging advanced manufacturing and defence sectors.

Victory complements the Company’s Georgia Lake Project and proposed Red Rock Converter by adding an additional exploration-stage lithium property to the Company’s Ontario asset portfolio. The Property hosts two known spodumene-bearing lithium-cesium-tantalum (“LCT”) pegmatite occurrences at surface and is located near the Trans-Canada Highway and nearby CPKC rail access. Rock Tech believes the Property provides prospective exploration opportunities and, if successfully advanced, could represent a potential future source of spodumene feedstock for the Company’s broader Ontario mine-to-converter strategy, subject to successful exploration and further technical evaluation.

Developing domestic sources of lithium feedstock is increasingly important as Ontario, Canada and allied economies seek to build secure, domestic critical minerals supply chains. By combining exploration and development opportunities with downstream conversion capacity, Rock Tech aims to help reduce dependence on overseas processing while supporting the growth of a secure North American lithium supply chain serving the EV and battery ecosystem and helping supply critical materials required by emerging advanced manufacturing and defence sectors.

Exploration Potential in an Infrastructure-Proximal Setting

The Victory Project hosts two known spodumene-bearing pegmatite occurrences: the Last Resort pegmatite and the Bounty pegmatite. These occurrences contain observed spodumene-bearing pegmatite mineralization at surface and provide multiple targets for future exploration.

The Last Resort pegmatite is the Company’s initial priority target. Selective grab sampling from the occurrence has returned values of up to 5.11% Li₂O. The occurrence has been mapped at surface over approximately 200 metres of strike length and up to approximately 30 metres in width. The occurrence has not been drill-tested, and the extent of mineralization beyond the currently mapped exposure, including its depth extent, grade continuity and overall geometry, has not been established. Additional exploration, including drilling, will be required to evaluate the extent, continuity and significance of the observed mineralization.

The Bounty pegmatite, located approximately 6 km from the Last Resort pegmatite, has been mapped at surface over approximately 375 metres of strike length and up to approximately 60 metres in width. Spodumene-bearing samples from the Bounty occurrence have returned values of up to 3.48% Li₂O. The occurrence has not been drill-tested, and its depth extent, grade continuity and overall geometry have not been established.

The approximately 6 km linear area between the two known spodumene-bearing occurrences remains largely unexplored and will be evaluated through future exploration programs. Rock Tech intends to evaluate this corridor through staged fieldwork, including prospecting, geological mapping, sampling and, subject to results, targeted drilling. While mineralized continuity between the Last Resort and Bounty occurrences has not been established, the corridor represents a logical focus for future exploration.

Strategic Fit Within Rock Tech’s Ontario Lithium Platform

Rock Tech’s Ontario strategy is anchored by the Georgia Lake Project and the proposed Red Rock Converter. The addition of the Project provides the Company with additional exposure to lithium exploration opportunities in Northwestern Ontario and complements its existing asset base in the province.

The Georgia Lake Project and the Victory Project are separate mineral properties. Information, mineralization, mineral resources, mineral reserves and exploration results relating to the Georgia Lake Project are not necessarily indicative of mineralization, exploration potential or future results at the Victory Project.

Victory fits within Rock Tech’s broader strategy of building a regional lithium platform around infrastructure-proximal assets that can be integrated into Ontario’s existing transportation network. Similar to Georgia Lake, the Victory Project benefits from proximity to established road and rail infrastructure, including the Trans-Canada Highway and nearby CPKC rail access. These characteristics are important to Rock Tech’s development approach, which is focused on identifying assets that can be evaluated through staged exploration programs and, if warranted by future exploration results and technical studies, considered for further advancement.

The Project is located approximately five hours by road from Rock Tech’s proposed Red Rock Converter, creating a geographic connection within the Company’s Ontario mine-to-converter strategy. If future exploration is successful and subsequent technical studies support further advancement of the Project, Victory may provide Rock Tech with additional optionality around future spodumene feedstock supply. Potential development and processing alternatives, including off-site processing, integration with existing or future regional infrastructure, or other project-specific pathways, would be evaluated only after additional exploration, technical studies and metallurgical testwork.

The acquisition of Victory reflects Rock Tech’s disciplined approach to building a regional lithium platform in Northwestern Ontario. By securing prospective lithium assets located near existing infrastructure and within reach of the proposed Red Rock Converter, the Company continues to strengthen the foundations of a made-in-Ontario critical minerals supply chain capable of supporting future battery and advanced manufacturing industries.

“The Victory Project is a natural fit within our strategy of building a made-in-Ontario lithium supply chain,” said Mirco Wojnarowicz, CEO of Rock Tech. “Ontario has the resources, infrastructure and existing industrial base to become a leader in battery materials, including for the EV, advanced manufacturing and defence sectors. This strategic acquisition gives Rock Tech exposure to a prospective spodumene-bearing property with strong infrastructure attributes, while the option structure allows us to test the project through staged exploration before committing the majority of the acquisition consideration.”

Transaction Terms

Under the Option Agreement, Rock Tech may acquire a 100% interest in the Victory Project by making aggregate payments of CAD $600,000 in cash and issuing CAD $400,000 in Rock Tech common shares over a 24-month period. The payments are staged, with CAD $150,000 in cash and CAD $100,000 in shares payable on signing, and the balance payable in two additional tranches on the 12-month and 24-month anniversaries of the Option Agreement.

The vendors will retain a 2.0% net smelter return royalty on the Victory Project. Rock Tech will have the right to purchase 1.0% of the NSR royalty for CAD $1.0 million at any time prior to a construction decision.

Additional milestone payments will become payable only upon the publication of future NI 43-101 (defined below) compliant mineral resource estimates, if any, on the Victory Project, including CAD $500,000 upon publication of a maiden mineral resource estimate of at least 10 million tonnes grading at least 1.0% Li₂O, CAD $1.0 million upon publication of a measured and indicated mineral resource estimate exceeding 25 million tonnes grading at least 1.0% Li₂O, and CAD $1.5 million upon publication of a measured and indicated mineral resource estimate exceeding 50 million tonnes grading at least 1.0% Li₂O. The foregoing resource thresholds are contractual payment milestones only and do not constitute estimates of mineral resources or mineral reserves on the Victory Project.

The transaction remains subject to customary conditions, including acceptance of the TSX Venture Exchange. Any common shares issued pursuant to the Option Agreement will be subject to applicable securities law resale restrictions and any hold periods required by the TSX Venture Exchange. The transaction is an arm’s-length transaction and no finder’s fees are payable in connection with the transaction.

“We have always believed the Victory Project is prospective for additional exploration, and the surface geology has consistently supported that view,” said Jace Angell, President of Last Resort. “Rock Tech brings an established presence in Ontario and a clear strategy for building an integrated lithium business in the province. We are pleased to see the project move into its next phase.”

“Rock Tech’s Ontario strategy makes it a strong technical and strategic partner for the Victory Project,” said Jason Leblanc, President of Bounty Gold. “The Property is still at an early exploration stage, but the known spodumene-bearing occurrences, infrastructure setting and regional context support a systematic exploration program. We look forward to seeing the results of Rock Tech’s planned work program.”

Supporting Rock Tech’s Ontario Investment Strategy

The Victory Project reflects Rock Tech’s continued commitment to investing in Ontario’s critical minerals sector. Together with the Georgia Lake Project and the proposed Red Rock Converter, the Victory Project strengthens the Company’s Ontario asset base and expands its portfolio of prospective lithium exploration properties.

Rock Tech intends to advance the Victory Project through a staged exploration program focused on validating known spodumene-bearing occurrences, testing extensions along strike and evaluating the underexplored corridor between the Last Resort and Bounty occurrences.

The Victory Project is an early-stage exploration property. While spodumene-bearing pegmatites have been identified at surface, there has been insufficient exploration to define a mineral resource and there can be no assurance that further exploration will result in the delineation of a mineral resource or that the Project will ultimately prove to be economically viable.

Technical Disclosure

Certain technical information contained in this news release is derived from historical exploration work completed by previous property owners and operators. While Rock Tech has reviewed available historical records, the Company has not independently verified all historical exploration information and readers should not place undue reliance on historical exploration results pending completion of additional verification work. The historical exploration information referenced in this news release should not be interpreted as a mineral resource estimate or mineral reserve estimate. Additional exploration activities, including field verification, confirmatory sampling and drilling, will be required to verify historical results and evaluate the extent, continuity and significance of the reported mineralization.

The scientific and technical information in this news release has been reviewed and approved by Cameron Andrews, P.Eng., a “qualified person” as defined in National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”).

The sample results disclosed in this news release are from selective grab samples and are not necessarily representative of mineralization across the Victory Project. Grab samples are inherently selective in nature and should not be relied upon as representative of average grade, thickness or continuity of mineralization. Rock Tech has reviewed available historical reports, sampling records and assay information provided by the vendors; however, the Company has not completed independent field verification, confirmatory sampling or twinning of historical results. The Company has not independently verified all historical or vendor-generated assay results and therefore readers should not place undue reliance on such information until additional verification work has been completed. The qualified person has not completed sufficient work to independently verify all such historical exploration information.

The Victory Project does not currently host a mineral resource estimate or mineral reserve estimate.

The potential processing pathways discussed in this news release are conceptual in nature. No metallurgical testwork, mining study, preliminary economic assessment, pre-feasibility study or feasibility study has been completed on the Victory Project by Rock Tech to support any such processing or development alternative, and there can be no assurance that any such alternative will prove technically or economically viable.

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 converter projects in Guben, Germany (24,000 tonnes LHM per year) and Red Rock, 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 is expected to contribute to 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.

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• Strengthening presence in global capital markets with combination of listing in Canada and planned trading on NASDAQ
• Rock Tech broadens its institutional investor base and enhances liquidity

Toronto, ON, June 12, 2025 – Rock Tech Lithium Inc. (TSX-V: RCK) (OTCQX: RCKTF) (FWB: RJIB) (WKN: A1XF0V) (the “Company” or “Rock Tech”) is pleased to announce the start of trading of Rock Tech shares on Xetra, the electronic system of Deutsche Börse AG in Germany (WKN: A1XF0V, ISIN: CA77273P02017, Ticker-Symbol: RCK). mwb Wertpapierhandelsbank AG, as designated sponsor, will handle the trading of Rock Tech’s shares with immediate effect and therefore contribute to increased liquidity and a higher turnover.

Rock Tech’s CEO, Mirco Wojnarowicz, commented: “Trading on Xetra is an important step in strengthening our presence in global capital markets and expanding our reach among institutional investors. Together with our Canadian listing and planned NASDAQ listing, this step strengthens our profile on both sides of the Atlantic and supports our strategy of increasing engagement with institutional investors. By joining the most recognized and highly efficient platform for German and European investors to access our shares, we expect to broaden our institutional investor base, enhance liquidity, and support more transparent price discovery for the benefit of all shareholders.”

While Rock Tech’s shares have already been available to German retail investors through venues such as Tradegate and Frankfurt, Rock Tech recognizes Xetra as being Deutsche Börse’s primary electronic trading platform and the reference market used by most German institutional investors. As a result, a Xetra listing broadens Rock Tech’s potential investor base by making Rock Tech accessible to a wider range of institutional investors that are typically restricted to trading on regulated and highly liquid exchanges.

This is not a new primary listing and does not change Rock Tech’s status as a Canadian issuer. Rock Tech will continue to be governed by Canadian securities regulations and reporting requirements.

On behalf of the Management

Mirco Wojnarowicz

CEO, Rock Tech Lithium Inc.

ABOUT ROCK TECH

Rock Tech is powering 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 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:

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.

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