Statement by the CEO of Rock Tech Lithium on the launch of Ontario’s $500 million Critical Minerals Processing Fund (CMPF)

Press Release

TORONTO, Dec. 15, 2025  – Mirco Wojnarowicz, the CEO of Rock Tech Lithium Inc. (TSXV: RCK) (OTCQX: RCKTF) (FWB: RJIB) (WKN: A1XF0V) (the “Company” or “Rock Tech”) is pleased to announce:

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.

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.

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