Aduro closes underwriter's overallotment option

Mr. Abe Dyck reports ADURO CLEAN TECHNOLOGIES ANNOUNCES CLOSING OF UNDERWRITER'S OVER-ALLOTMENT OPTION IN PUBLIC OFFERING Aduro Clean Technologies Inc. has issued an additional 260,869 common shares and warrants to purchase an additional 130,434 common shares, for total gross proceeds of approximately $3-million (U.S.), pursuant to D. Boral Capital LLC's full exercise of its underwriter's overallotment option in connection with the company's previously announced underwritten U.S. public offering of common shares and accompanying warrants to purchase common shares. The common shares issued pursuant to the overallotment option were sold in combination with an accompanying half warrant (with each whole warrant being exercisable into one common share of the company). Each whole warrant has an exercise price of $16 (U.S.) per share, is exercisable immediately and will expire three years from the date of issuance. D. Boral Capital acted as lead underwriter for the offering. Roth Capital Partners acted as financial adviser for the offering. Aduro intends to use the net proceeds from the offering for expenditures related to the construction of its demonstration-scale plant and the rest (if any) for continuing research and development, general corporate purposes, and working capital. The offering was made pursuant to an effective shelf registration statement on Form F-10, as amended (file No. 333-292023), previously filed with the U.S. Securities and Exchange Commission on Dec. 15, 2025, which became effective upon filing, and the company's Canadian short form base shelf prospectus dated Dec. 15, 2025. Aduro offered and sold the securities in the United States only. No securities were offered or sold to Canadian purchasers. The base shelf prospectus relating to the offering and describing the terms thereof has been filed with the applicable securities commissions in Canada and with the SEC in the United States, and is available at no charge by visiting the company's profiles on the SEDAR+ website maintained by the Canadian Securities Administrators or the SEC's website as applicable. A final prospectus supplement with the final terms was filed with the securities regulatory authorities in the Canadian provinces of British Columbia and Ontario and with the SEC. Copies of the final prospectus may be obtained at the SEC's website or from D. Boral Capital, attention: 590 Madison Ave., 39th floor, New York, N.Y., 10022, or by e-mail at [email protected] or by telephone at 1-212-970-5150. Before you invest, you should read the prospectus and other documents the company has filed or will file with the SEC for more complete information about the company and the offering. About Aduro Clean Technologies Inc. Aduro Clean Technologies is a developer of patented water-based technologies to chemically recycle waste plastics; convert heavy crude and bitumen into lighter, more valuable oil; and transform renewable oils into higher-value fuels or renewable chemicals. The company's Hydrochemolytic technology relies on water as a critical agent in a chemistry platform that operates at relatively low temperatures and cost, a game-changing approach that converts low-value feedstocks into resources for the 21st century. We seek Safe Harbor.