File: '\\swfile\EmailIn\20260928 151221 Attachment ADURO News Release for Early Warning Report for Ofer Vicus for pledge of 500,000 shares to Scotia (September 28, 2026).docx'

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Avshalom Ofer Vicus Files Early Warning Report

Regarding Share Pledge

LONDON, ONTARIO, September 28, 2026 - Avshalom Ofer Vicus (the "Reporting Person") provides an update on the Reporting Person's securityholdings with respect to Aduro Clean Technologies Inc. (the "Company"). The Reporting Person has pledged 500,000 common shares (each, a "Share") of the Company as collateral pursuant to a securities account pledge and control agreement (the "Pledge Arrangement").

The Reporting Person owns 24.9% of the Shares, calculated based on 35,871,442 Shares, which consists of 35,733,749 Shares outstanding as of September 28, 2026 and 137,693 Shares that may be acquired upon exercise of stock options (each, an "Option"). The Pledge Arrangement does not constitute a sale, transfer or disposition of the pledged Shares and does not result in any change in the Reporting Person's beneficial ownership of, or voting or dispositive power over, the pledged Shares.

The Reporting Person has filed an Early Warning Report pursuant to National Instrument 62-103F1 The Early Warning System and Related Take-Over Bid and Insider Reporting Issues describing the above securityholdings with the applicable securities regulatory authorities. A copy of the Early Warning Report is available on SEDAR+ at www.sedarplus.ca under the profile of the Company.

"Avshalom Ofer Vicus"

Avshalom Ofer Vicus, Reporting Person

Tel: 647.680.3515