Mr. George Ogilvie reports

ARIZONA SONORAN MAINSPRING DRILLING INTERSECTS NEAR SURFACE MINERALIZATION; INTERSECTS 1,053 FT (321 M) OF 0.20% TOTAL COPPER FROM 147 FT (45 M) DEPTH

Arizona Sonoran Copper Company Inc. has released drill assay results from an exploration program at the MainSpring property, situated within the Cactus copper project in Arizona. A total of seven of 11 Arizona Sonoran drilled holes completed last year (see press release Nov. 20, 2023), and 22 legacy holes from the previous option holder are reported here and indicate mineralization from the Parks/Salyer deposit nears surface as it extends south. Future drilling will test the open-pit potential of MainSpring with the intent of updating the Cactus mineral resource estimate postprefeasibility study (PFS).

Drilling highlights:

• ECM-194: 1,053 feet (321 metres) at 0.20 per cent CuT (total copper) of mineralization from 147 ft (45 m) depth:
  • 48 ft (15 m) at 0.35 per cent CuT, 0.25 per cent Cu TSol (total soluble copper), 0.001 per cent molybdenum (oxide);
  • 471 ft (144 m) at 0.3 per cent CuT, 0.29 per cent Cu TSol, 0.001 per cent Mo (enriched).
• ECM-195: 503 ft (153 m) at 0.27 per cent CuT of mineralization from 145 ft (44 m) depth:
  • 41 ft (12.5 m) at 0.63 per cent CuT, 0.59 per cent Cu TSol from 145 ft (44 m) depth (enriched);
  • 208 ft (63 m) at 0.44 per cent CuT, 0.40 per cent Cu TSol, 0.001 per cent Mo (enriched) from 440 ft (134 m);
  • 41 ft (12.5 m) at 0.63 per cent CuT, 0.59 per cent Cu TSol from 145 ft (41 m) depth.
• ESC-010: 1,027 ft (313 m) at 0.30 per cent CuT of continuous mineralization:
  • 170 ft (52 m) at 0.59 per cent CuT, 0.46 per cent Cu TSol, 0.017 per cent Mo (enriched);
  • 857 ft (261 m) at 0.24 per cent CuT, 0.009 per cent Mo (primary).
• -ESC-047: 216 ft (66 m) at 0.60 per cent CuT, 0.51 per cent Cu TSol, 0.011 per cent Mo (enriched);
• ESC-046: 175 ft (53 m) at 0.68 per cent CuT, 0.65 per cent Cu TSol, 0.004 per cent Mo (enriched);
• ESC-030: 249 ft (76 m) at 0.41 per cent CuT, 0.31 per cent Cu TSol, 0.006 per cent Mo (oxide).

Note: True widths are not known.

George Ogilvie, Arizona Sonoran president and chief executive officer, commented: "The MainSpring property shows early signs of promise with continuous mineralization starting from near surface, that may have the potential for being open-pittable. Given we only started drilling MainSpring late in 2023, it will not feature in our soon-to-be-released PFS. However, with continued drilling in H1 2024, it has the potential to be included in future technical studies that may further enhance the production profile and economics of the project."

He also commented: "The Cactus property continues to show itself as a lower-risk copper project with few barriers to entry and low discovery costs. We are showing discovery costs per pound at Cactus of less than two cents per pound, indicating that we should continue our exploration programs, while concurrently developing our main project. Our high-performing team continues to deliver excellent results and we expect this to continue with our 2024 work program which is currently being finalized and will be announced to the market shortly."

MainSpring property

Title to the MainSpring property will be transferred upon making payment to the former landowner, due in February as part of the budgeted 2024 work program. The company rezoned PADII, the northern parcel of MainSpring, from industrial use to mining and is currently rezoning PADIII, the southern parcel, to mining use from residential. The PADIII rezoning exercise is expected to be completed in the next few weeks. Going forward, the company is testing the potential for MainSpring to become a starter pit for Parks/Salyer, similar to Cactus West for Cactus East.

Drilling recap

Eleven diamond core holes for 13,627 feet (4,154 m) were completed at the MainSpring property in 2023. Assay results for four holes were reported last year (press release dated Nov. 20, 2023). The seven remaining holes, including assays from the final primary mineralization from drill hole ECM-190, are reported in this press release. Additionally, Arizona Sonoran has received data, drill core, rock chips, coarse rejects and assay pulps for 22 legacy holes totalling 22,091 feet (6,734 m) drilled on the property by the previous holder.

Drilling has confirmed the presence of shallow mineralization 140 ft (43 m) from surface at the MainSpring property consisting of oxide, enriched and primary mineralization. Bounding normal faults to the east and west create a shallow horst block that gently drops into the deeper high-grade Parks/Salyer deposit to the north through a series of north-dipping normal faults.

Drilling on the MainSpring property resumed in January, 2024, with three diamond core rigs, which are working to complete a 500 ft (152.4 m) grid pattern, focused on filling out an initial inferred resource.

Quality assurance/quality control

Drilling completed on the project between 2020 and 2024 was supervised by on-site Arizona Sonoran personnel who prepared core samples for assay and implemented a full QA/QC program using blanks, standards and duplicates to monitor analytical accuracy and precision. The samples were sealed on site and shipped to Skyline Laboratories in Tucson, Ariz., for analysis.

MainSpring legacy drilling data obtained from the previous option holders of the property were prepared and shipped using a full QA/QC program similar to Arizona Sonoran's. The sealed samples were sent to Skyline Laboratories in Tucson, Ariz. These samples were prepped and analyzed using the sample procedures as Arizona Sonoran samples. Skyline's quality control system complies with global certifications for quality ISO9001:2008.

Technical aspects of this news release have been reviewed and verified by Allan Schappert, CPG No. 11758, who is a qualified person as defined by National Instrument 43-101 Standards of Disclosure for Mineral Projects.

About Arizona Sonoran Copper Company Inc.

Arizona Sonoran's objective is to become a mid-tier copper producer with low operating costs and to develop the Cactus and Parks/Salyer projects that could generate robust returns for investors and provide a long-term sustainable and responsible operation for the community and all stakeholders. The company's principal asset is a 100-per-cent interest in the Cactus project (former ASARCO, Sacaton mine) which is situated on private land in an infrastructure-rich area of Arizona. Contiguous to the Cactus project is the company's 100-per-cent-owned Parks/Salyer deposit that could allow for a phased expansion of the Cactus mine once it becomes a producing asset. 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.