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Vancouver, British Columbia – TheNewswire - December 2 3 , 2025 - Avventura Resources Ltd. (" Avventura " or the " Company ") (CSE: AA), a Canadian mineral exploration company, is pleased to report the results from its initial rock sampling program conducted at the company’s Horwood Property, located to the southwest of Timmins, Ontario (Figure 1).

Figure 1. Regional location of the Horwood Property.

As part of the Company’s ongoing exploration program at the Horwood Property, over 160 rock samples were collected during recent fieldwork and submitted to AGAT Laboratories for gold analysis. The results reported herein represent the first five (5) samples received from the laboratory, with additional assay results pending. One sample returned gold values exceeding the analytical detection limit and was subsequently re-assayed using gravimetric fire assay methods.

Rock Sample Results (Grab Samples)

Sample F573209: 62.0 g/t Au
Sample F573212: 0.564 g/t Au
Sample F573210: 0.249 g/t Au
Sample F573211: 0.010 g/t Au
Sample F573208: 0.002 g/t Au

The sample returning 62.0 g/t Au was initially reported as >10.0ppm Au by ICP-OES and subsequently confirmed by gravimetric fire assay.

The Company cautions that grab samples are selective by nature and may not be representative of mineralization on the property as a whole. The reported results represent point samples only and should not be interpreted as indicative of the extent, continuity, or grade of mineralization.

The Horwood Property is at an early stage of exploration, and no drilling has been completed on the property to date. The results from this initial sampling program will be used to assist in planning future exploration activities, which may include additional surface sampling, geological mapping, and geophysical surveys, subject to further review and regulatory approvals.

Historical Exploration Results

The Company notes that historical exploration results were previously reported from the Horwood Property in a National Instrument 43-101 technical report titled “NI 43-101 Technical Report on the Horwood Property, District of Sudbury, Ontario”, effective December 21, 2022, and amended August 1, 2023. That report disclosed grab sample results of up to 6.01 g/t Au from the Denross occurrence.

Quality Assurance / Quality Control

Rock samples were collected by Company personnel following standard industry practices. Samples were securely transported to AGAT Laboratories, an independent and ISO-accredited laboratory. Gold analysis was performed using fire assay methods with ICP-OES finish, with over-limit samples re-assayed using gravimetric fire assay.

Qualified Person

The technical information contained in this news release has been reviewed and approved by Mike Kilbourne, P.Geo., a Qualified Person as defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects.

About Avventura Resources Ltd.

Avventura Resources Ltd. is a Canadian mineral exploration company focused on the acquisition and development of high-potential exploration projects. The Company is committed to responsible resource development and creating long-term value for its shareholders.

On Behalf of Avventura Resouces Ltd.

Sean Flynn ‒ CEO

Tel: 250-857- 2237

Email: sdflynn@hotmail.com

Cautionary Note Regarding Forward-Looking Information

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.

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