Mr. George Ogilvie reports

ARIZONA SONORAN ACHIEVES AVERAGE OF 87% EXTRACTION RATES OF SOLUBLE COPPER IN THE ENRICHED MATERIAL

Arizona Sonoran Copper Company Inc. has released results from 12 leach columns completed from its column leach metallurgical testing program at the Cactus project in Arizona. An average soluble copper extraction rate of 87 per cent over 180 days of leaching was achieved from six oxide and enriched composite columns from the Parks/Salyer deposit, inclusive of MainSpring. The other six columns represent the final stockpile columns with an average soluble copper extraction rate of 86 per cent over 100 days.

These updated Parks/Salyer extraction results compare well with the soluble copper rates of 92 per cent oxide and 85 per cent enriched, in support of the single pad leach plan as outlined in the 2024 preliminary economic assessment (see technical report filed on Aug. 27, 2024).

Following the recommendation from the 2024 PEA, Arizona Sonoran has begun to implement the $3-million metallurgical program ahead of the H2 2025 prefeasibility study, utilizing both Base Met and McClelland Labs. This next program focuses on upgrading the Parks/Salyer deposit metallurgical information. A total of five enriched columns, two enriched and oxide composites, and four primary sulphide (chalcopyrite) columns are planned, all related to conventional heap leaching, as per the 2024 PEA mine plan.

Samples from Cactus, Parks/Salyer and the stockpile were prepped and composited for the 2025 PFS metallurgical test program using both Base Met and McClelland laboratories, overseen by Steve Dixon, Arizona Sonoran chief engineer, with Laurie Tahija of M3 Engineering acting as qualified person.

Mr. Dixon, Arizona Sonoran's chief metallurgist, commented: "Across the Parks/Salyer, Cactus West and Cactus East deposits, we benefit from similar mineralogies and no deleterious materials as evidenced from four years of metallurgical testing on the three deposits. Test work using standard best-practice conditions is ongoing and will continue until we hand off testing to operations, assuming a positive construction decision post definitive feasibility study. To date, we are encouraged to see the first two columns from the new MainSpring property behaving similarly to Parks/Salyer, as expected. Over all, the Cactus project oxide and enriched recoveries and leach times perform in line with other operating mines within Arizona's copper belt."

Metallurgical testing program -- oxide, enriched and stockpile material type

The 12 completed columns were 20 feet (six metres) in height and consisted of six columns from the Parks/Salyer deposit, including two focused on the new shallow MainSpring property and six from the stockpile. The Parks/Salyer oxide and enriched composites averaged 87 per cent of soluble copper extracted over 180 days. The six stockpile columns tested the impact of calcium content on the recoveries. Stockpile recoveries at 86 per cent of soluble copper over 100 days were comparable with past reporting (at 93 per cent) and make up approximately 1 per cent of the total 2024 PEA mine plan. While the stockpile provides valuable information on material already extracted from the former Sacaton mine, all testing going forward will be focused on fresh material from the company's recent drilling at Parks/Salyer.

To date, completed Parks/Salyer composite columns total of six with grade ranges of 0.17 per cent to in excess of 2.00 per cent total copper. The average mineral resource grade at Parks/Salyer is 0.56 per cent soluble copper in the measured and indicated open-pit category (see press release dated July 16, 2024). Columns are modelling Parks/Salyer's heap soluble copper extraction after being in operation for 180 days. The individual column results were used to calculate the rate of soluble copper extraction for the enriched material. The time frame used for the modelling was 150 to 180 days. The average per cent soluble copper extraction at 180 days of leaching was 87.1 per cent. The copper content in the pregnant leach solution (PLS) at 180 days was significant for all column tests. The copper content in the PLS (0.2 gram to 4.2 grams per litre copper) was justification to predict the extraction of soluble copper from an additional 30 days of leaching. The rate of soluble copper extraction was extended by 30 days using a regression based on the logarithm of leach time. The average per cent soluble copper extraction is estimated at 93.7 per cent at 210 days of leaching. The assumption of 210 days of column leaching in the lab is assumed to be the equivalent of three 180-day cycles, in operation. Each leach cycle is assumed to be completed within a year.

The term heap efficiency factor is the relationship of column test results to operational results. A world-class operation would have a factor close to 100 per cent. An operation that uses best practice would have a 95-per-cent factor. The use of a heap efficiency factor of 95 per cent will reduce the extractable soluble copper from 93.7 per cent for 210 days of leaching to 89 per cent.

There will be additional copper extracted from material in the heap after the three leach cycles if the use of best practice in the loading and operation is done. This additional copper extraction after three leach cycles is not part of the model.

Planned program

As part of the continuing metallurgical program and in advance of the 2025 PFS expected to be issued in the second half of 2025, the next planned columns are dedicated to five enriched columns, two enriched/oxide composite columns and four primary columns, all from the Parks/Salyer deposit, with the exception of two primary sulphide columns filled by material from Cactus West. Primary material columns will test the impact of heat application versus ambient conditions at McClelland Lab, while Base Met will also test at ambient temperature.

Qualified person statement

Technical aspects related to the metallurgical program of this press release have been reviewed and verified by Mr. Tahija of M3 Engineering, who is a qualified person as defined by National Instrument 43-101, Standards of Disclosure for Mineral Projects. The indicative metallurgical information presented describes preliminary results from testing that is currently in progress and subject to confirmation. Final metallurgical performance estimates will require decommissioning of the columns and analysis of the column residues.

About Arizona Sonoran Copper Company Inc.

Arizona Sonoran is a copper exploration and development company with a 100-per-cent interest in the brownfield Cactus project. The project, on privately held land, contains a large-scale porphyry copper resource and a recent 2024 PEA proposes a generational open-pit copper mine with robust economic returns. Cactus is a lower-risk copper developer benefiting from a state-led permitting process, in-place infrastructure, highways and rail lines at its doorstep, and on-site permitted water access. The company's objective is to develop Cactus and become a mid-tier copper producer with low operating costs that could generate robust returns and provide a long-term sustainable and responsible operation for the community, investors and all stakeholders. The company is led by an executive management team and board, which have a long-standing record of successful project delivery in North America, complemented by global capital markets expertise.

We seek Safe Harbor.