Nano One Announces Filing of Prospectus Supplement

Prospectus Supplement and Base Shelf Prospectus are Accessible Through SEDAR+

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VANCOUVER, BRITISH COLUMBIA / ACCESS Newswire / December 8, 2025 / Nano One Materials Corp. ("Nano One" or the "Company") (TSX:NANO)(OTCQB:NNOMF), is pleased to announce that, in connection with its previously announced overnight marketed underwritten offering (the "Offering"), it has filed a prospectus supplement dated December 8, 2025 (the "Prospectus Supplement") to its short form base shelf prospectus (the "Base Shelf Prospectus") dated April 26, 2024, in each of the provinces of Canada, except Québec, to qualify the distribution of 4,650,000 units (the "Units") of the Company at a price of C$1.40 per Unit (the "Offering Price") and up to an additional 697,500 Units at the Offering Price to be issued upon exercise of an over-allotment option, the particulars of which are further described in the Prospectus Supplement. Closing of the Offering is expected to occur on or about December 10, 2025, and is subject to satisfaction of all closing conditions, including the listing requirements of the Toronto Stock Exchange.

Prospectus Supplement and Base Shelf Prospectus is Accessible through SEDAR+

Access to the Base Shelf Prospectus, Prospectus Supplement and any amendment thereto is provided, and delivery thereof will be satisfied, in accordance with the "access equals delivery" provisions of applicable securities legislation. The Prospectus Supplement and Base Shelf Prospectus is accessible on the Company's profile at SEDAR+ at www.sedarplus.ca. An electronic or paper copy of the Base Shelf Prospectus, Prospectus Supplement and any amendment to the documents may be obtained, without charge, from Canaccord Genuity Corp. at 40 Temperance Street, Suite 2100, Toronto ON, M5H 0B4, by telephone at [phone] or by email at [e-mail] by providing the contact with an email address or address, as applicable. Prospective investors should read the Base Shelf Prospectus and Prospectus Supplement in its entirety before making an investment decision.