File: '\\swfile\EmailIn\20250905 144946 Attachment Avventura - News Release re Appointment of S. Flynn.docx'

AVVENTURA RESOURCES ANNOUNCES APPOINTMENT OF

SEAN FLYNN AS DIRECTOR

Vancouver, British Columbia, September 5, 2025: Avventura Resources Ltd. (the "Company" or "Avventura") (CSE: AA) is pleased to announce the appointment of Sean Flynn as a director of the Company.

Sean Flynn brings over 15 years of leadership and technical expertise to the board. From 2008 to 2021, he served in the Royal Canadian Navy as a Naval Warfare Officer, retiring with the rank of Lieutenant (Navy) (Lt(N)). Following his military career, Mr. Flynn joined Lockheed Martin Canada, where he held the position of Senior Technical Trainer, specializing in defense systems and the teaching of geopolitics.

In parallel, Mr. Flynn advanced his career in the capital markets as Head of Project Management at Mid Atlantic Capital Associates Ltd., a firm active in corporate finance and strategic advisory for emerging public companies. His combined background in disciplined military leadership, advanced technical instruction, and capital markets project oversight provides a unique skillset well-suited to supporting the growth of a junior mining issuer..

Mr. Flynn will also serve on the audit committee of the board of directors of the Company.

The Company also announces that John Pallot has resigned as a director of the Company. The Company wishes to thank him for his contributions to the Company and wishes him all the best in his future endeavors.

About Avventura Resources Ltd.

Avventura Resources Ltd. is engaged in the business of mineral exploration and the acquisition of mineral property assets in Canada. Its objective is to locate and develop economic precious and base metal properties of merit and to conduct its exploration program on the Horwood property, which is comprised of 45 multicell mining claims, covering an area of 68.36 km2 in the Porcupine Mining Division of Ontario, approximately 90km southwest of Timmins in a straight line.

On Behalf of Avventura Resources Ltd.

Anthony Balic, CEO and President

Email: abalic@katunicapital.com

Tel: 1 (604) 312 2425

Cautionary Note Regarding Forward-Looking Statements

This news release includes certain forward-looking statements and forward-looking information (collectively, "forward-looking statements") within the meaning of applicable Canadian securities legislation. All statements, other than statements of historical fact, included herein including, without limitation, statements regarding the anticipated business plans and timing of future activities of the Company, are forward-looking statements. Although the Company believes that such statements are reasonable, it can give no assurance that such expectations will prove to be correct. Often, but not always, forward looking information can be identified by words such as "pro forma", "plans", "expects", "will", "may", "should", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates", "believes", "potential" or variations of such words including negative variations thereof, and phrases that refer to certain actions, events or results that may, could, would, might or will occur or be taken or achieved. Forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to differ materially from any future results, performance or achievements expressed or implied by the forward-looking statements. Such risks and other factors include, among others, statements as to the anticipated business plans and timing of future activities of the Company, the ability of the Company to obtain sufficient financing to fund its business activities and plans, delays in obtaining governmental and regulatory approvals (including of the Canadian Securities Exchange), permits or financing, changes in laws, regulations and policies affecting mining operations, currency fluctuations, title disputes or claims, environmental issues and liabilities, changes in laws, regulations and policies affecting mining operations, title disputes, the inability of the Company to obtain any necessary permits, consents, approvals or authorizations, the timing and possible outcome of any pending litigation, environmental issues and liabilities, and risks related to joint venture operations, and other risks and uncertainties disclosed in the Company's continuous disclosure documents. All of the Company's Canadian public disclosure filings may be accessed on the SEDAR+ website at www.sedarplus.ca and readers are urged to review these materials.

Readers are cautioned not to place undue reliance on forward-looking statements. The Company undertakes no obligation to update any of the forward-looking statements in this presentation or incorporated by reference herein, except as otherwise required by law.