Mr. Mirco Wojnarowicz reports

ROCK TECH LITHIUM ANNOUNCES OFFERING OF UP TO $7.5 MILLION

Rock Tech Lithium Inc. has received irrevocable subscription agreements for aggregate gross proceeds of $4.8-million pursuant to a brokered and non-brokered private placement offering of units of the company at a price of 90 cents per unit.

Maxim Group LLC acted as sole placement agent in connection with the brokered offering.

Each unit will consist of one common share of the company and one common share purchase warrant of the company. Each warrant will be exercisable immediately upon issuance to purchase one common share of the company at an exercise price of $1.17 and will expire on the three-year anniversary of the original issuance date. The units under the brokered offering and non-brokered offering are being offered to selected investors outside of Canada pursuant to Section 2.3 of Ontario Securities Commission Rule 72-503, Distributions Outside of Canada.

The brokered offering and the non-brokered offering are expected to close on or about Sept. 3, 2025, and may close in one or more tranches.

Additionally, the company intends to offer up to 2,975,111 units for aggregate gross proceeds of up to $2,678,000, on a non-brokered basis, to: (i) select purchasers resident in Canada (other than the province of Quebec), subject to compliance with applicable regulatory requirements and in accordance with National Instrument 45-106, Prospectus Exemptions, pursuant to Part 5A of NI 45-106, as amended by Coordinated Blanket Order 45-935, Exemptions from Certain Conditions of the Listed Issuer Financing Exemption; and (ii) select offshore institutional investors in connection with the non-brokered offering. The company has engaged Research Capital Corp. as a finder in connection with the LIFE offering. The LIFE offering is expected to close on or about Sept. 3, 2025, or such other date or dates as the company may determine.

The company may upsize the offering by an additional $2.5-million, subject to investor demand, for aggregate gross proceeds of up to $10-million. 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 company has filed on its SEDAR+ profile contemporaneously herewith an offering document pursuant to Form 45-106F19 in connection with the LIFE offering 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. Prospective investors in the LIFE offering should read the LIFE offering document before making an investment decision.

Closing of the offering is subject to certain conditions, including, but not limited to, receipt of all necessary approvals, including the conditional approval of the TSX Venture Exchange. Closing of the non-brokered offering and the LIFE offering are not conditional upon closing of the brokered offering. The units issuable pursuant to the listed issuer financing exemption are expected to be immediately freely tradeable and will not be subject to a hold period under applicable Canadian securities laws.

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 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 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.