Mr. Kerstin Wedemann reports

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

Rock Tech Lithium Inc. has signed a binding long-term offtake agreement dated July 24, 2026, with Transamine SA, a Geneva-based global commodity trading house, for spodumene concentrate produced at the company's wholly owned Georgia Lake project 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.

Highlights:

• Binding offtake with Geneva-based commodity trading house Transamine 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 $80-million (U.S.);
• 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

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 $80-million (U.S.) 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 plus-or-minus-10-per-cent 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 (minimum 6 per cent Li2O (lithium oxide), 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. Together with the prepayment facility, the agreement brings us another step closer to building an integrated mine-to-converter platform and supporting a stable, secure supply of battery-grade lithium for Canada and its allies."

Up to $80-million (U.S.) development prepayment facility

To support Georgia Lake project, the agreement provides for a framework for a development prepayment facility of up to $80-million (U.S.). The prepayment carries interest at three-month CME (Chicago Mercantile Exchange) term SOFR (secured overnight financing rate) plus 2.95 per cent per annum, accruing quarterly, and would be repaid by setting 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) of 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 Inc.

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 (lithium hydroxide monohydrate) per year), and Ontario, Canada (up to 32,000 tonnes LCE (lithium carbonate equivalent) 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 European Union Critical Raw Materials Act.

The raw materials for Rock Tech's converter projects are intended to be sourced exclusively from verifiably ESG-compliant (environmental, social and governance) 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.

We seek Safe Harbor.