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AVL.TO ·

Avalon Cancels Special Meeting of Shareholders

Shareholder Meetings

Avalon Cancels Special Meeting of

Shareholders

Toronto, Ontario--(Newsfile Corp. - October 6, 2025) -

Avalon Advanced Materials Inc.

(TSX: AVL)

(OTCQB: AVLNF) ("

Avalon

" or the "

Company

") today announced that its special meeting of

shareholders (the "Special Meeting") scheduled for October 7, 2025 has been canceled. The decision

follows the Company's determination that quorum requirements (i.e., not less than 20% of the issued and

outstanding shares of the Company carrying voting rights) for the Special Meeting had not been met by

the extended proxy voting deadline of October 6, 2025, at 4:00 p.m. Eastern Time.

The Board of Directors expects that the matter originally scheduled for shareholder consideration at the

Special Meeting - adoption of a shareholder rights plan - will be considered for approval at a later date.

Proxies submitted for the Special Meeting will not carry over to any future meeting of the Company's

shareholders at which a shareholder rights plan is considered and are no longer effective.

Avalon remains committed to engaging its shareholders and ensuring broad participation on matters of

importance to the Company and its future. Avalon shareholders may contact Avalon Investor Relations at

[email protected]

or 416-364-4938 for further information about the cancelled Special Meeting.

About Avalon Advanced Materials Inc.

Avalon Advanced Materials Inc. is a Canadian critical minerals company advancing the supply of

materials essential for Canada's future. The Company is focused on developing strategic assets that

support secure, domestic supply chains and long-term economic growth. Avalon is focused on vertically

integrating the Ontario lithium supply chain through the development of Lake Superior Lithium Inc.,

Ontario's first midstream lithium hydroxide processing facility, located in Thunder Bay. This facility will

serve as a vital link between northern Ontario's lithium resources and the growing EV battery

manufacturing base in southern Ontario and North America. Through a joint venture with SCR-Sibelco

NV, Avalon is advancing the Separation Rapids Lithium Project near Kenora, Ontario, as well as

continuing exploration at its Snowbank lithium and Lilypad lithium-cesium deposits. The Company is also

advancing the Nechalacho Rare Earths and Zirconium Project in the Northwest Territories. This deposit

contains all light and heavy rare earth elements, as well as yttrium, zirconium, tantalum, and niobium-

critical minerals used in advanced technologies across the communications, defense, clean tech, and

energy sectors.

For further information regarding Avalon Advanced Materials Inc., please visit

www.avalonadvancedmaterials.com

, email

[email protected]

, or call 416-364-4938.

Cautionary Statement Regarding Forward-Looking Information

This news release contains "forward-looking information" within the meaning of applicable Canadian

securities legislation. Generally, forward-looking information can be identified by the use of forward-

looking terminology such as "add" or "additional", "advancing", "anticipates" or "does not anticipate",

"appears", "believes", "can be", "conceptual", "confidence", "continue", "convert" or "conversion",

"deliver", "demonstrating", "estimates", "encouraging", "expand" or "expanding" or "expansion",

"expect" or "expectations", "forecasts", "forward", "goal", "improves", "increase", "intends",

"justification", "plans", "potential" or "potentially", "promise", "prospective", "prioritize", "reflects",

"robust", "scheduled", "suggesting", "support", "top-tier", "updating", "upside", "will be" or "will

consider", "work towards", or variations of such words and phrases or state that certain actions, events

or results "may", "could", "would", "might", or "will be taken", "occur", or "be achieved".

Forward-looking information is subject to known and unknown risks, uncertainties and other factors

that may cause the actual results, level of activity, performance or achievements of the Company to

be materially different from those expressed or implied by such forward-looking information, including

those risk factors discussed or referred to in the annual information form of the Company dated

November 28, 2024 (the "AIF") under the heading "Description of the Business - Risk Factors".

Forward-looking information is based on the reasonable assumptions, estimates, analysis and

opinions of management made in light of its experience and perception of trends, current conditions

and expected developments, as well as other factors that management believes to be relevant and

reasonable in the circumstances at the date that such statements are made, but which may prove to

be incorrect. Although the Company believes that the assumptions and expectations reflected in such

forward-looking information are reasonable, undue reliance should not be placed on forward-looking

information because the Company can give no assurance that such expectations will prove to be

correct. Although the Company has attempted to identify important factors that could cause actual

results to differ materially from those contained in forward-looking information, there may be other

factors that cause results not to be as anticipated, estimated or intended. There can be no assurance

that such information will prove to be accurate, as actual results and future events could differ

materially from those anticipated in such information. Accordingly, readers should not place undue

reliance on forward-looking information. The Company does not undertake to update any forward-

looking information, except in accordance with applicable securities laws.

To view the source version of this press release, please visit

https://www.newsfilecorp.com/release/269349