Mr. Mirco Wojnarowicz reports

ROCK TECH LITHIUM CLOSES THIRD AND FINAL TRANCHE NON-BROKERED PRIVATE PLACEMENT FOR AGGREGATE GROSS PROCEEDS OF $6.51 MILLION

Rock Tech Lithium Inc., further to its news releases dated Aug. 29, 2025, Sept. 4, 2025, and Sept. 5, 2025, has closed the third and final tranche of its previously announced non-brokered private placement offering, pursuant to which the company sold 1,138,400 units at a price of 90 cents per unit for aggregate gross proceeds of $1,024,560. In aggregate, the company has issued an aggregate of 7,231,621 units for total gross proceeds of $6,508,459 under the first, second and third tranches of the brokered and non-brokered portions of the offering.

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 finance 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 (LIFE) under Part 5A of National Instrument 45-106, Prospectus Exemptions; 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 filed on its SEDAR+ profile on Aug. 29, 2025, an offering document pursuant to Form 45-106F19, in accordance with the listed issuer financing exemption. The LIFE offering document can be accessed under the company's profile on SEDAR+ and on the company's website. 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.

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 hydroxide converter projects in Guben, Germany (24,000 tonnes LHM (lithium hydroxide monohydrate) per year), and Ontario, Canada (up to 36,000 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 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 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.

We seek Safe Harbor.