Mr. Abe Dyck reports

ADURO CLEAN TECHNOLOGIES ANNOUNCES PRICING OF US$20 MILLION UNDERWRITTEN PUBLIC OFFERING

Aduro Clean Technologies Inc. has priced its underwritten U.S. public offering of 1,739,130 common shares, together with accompanying warrants to purchase 869,565 common shares for gross proceeds of approximately $20-million (U.S.), before deducting underwriting discounts and offering expenses. The common shares are being 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, will become exercisable immediately and will expire three years from the date of issuance.

D. Boral Capital LLC is acting as lead underwriter for the offering. Roth Capital Partners is acting 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 remainder (if any) for continuing research and development, general corporate purposes, and working capital. The offering is expected to close on or about Dec. 22, 2025, subject to the satisfaction of customary closing conditions.

In addition, the company has granted the underwriters a 45-day overallotment option to purchase up to an additional 260,869 common shares and/or warrants to purchase an additional 130,434 common shares.

The offering is being 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 (SEC) on Dec. 15, 2025, and became effective upon filing, and the company's Canadian short-form base shelf prospectus dated Dec. 15, 2025. Aduro will offer and sell the securities in the United States only. No securities will be 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 free of charge by visiting the company's profile 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 will be filed with the securities regulatory authorities in the Canadian provinces of British Columbia and Ontario and the SEC. Copies of the final prospectus may be obtained, when available, at the SEC's website or from D. Boral Capital, 590 Madison Ave., 39th floor, New York, N.Y., 10022; by e-mail at info@dboralcapital.com; 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

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.