Zonia

Project Overview

Location: Walnut Grove, Arizona

Zonia is a pre-stripped, past-producing open-pit mine with on-site SX-EW processing for the production of LME-grade copper cathode. As a brownfield site on private and patented land, with a significant surrounding land package of federal claims, Zonia benefits from an existing water supply and nearby grid power.

Edge Copper’s 2026 PEA confirms a strong foundation with room to grow.

2026 PEA Highlights

All $ in USD
Base-case Economics ($4.75/lb Cu)
After-tax NPV (8%)	$M	488
After-tax IRR	%	23.4
Total Free Cash Flow	$M	985
Spot-case Economics ($5.98/lb Cu)
After-tax NPV (8%)	$M	1,073
After-tax IRR	%	40.9
Total Free Cash Flow	$M	1,828
Total Copper Cathode Production	M lbs	784
Average Annual Copper Cathode Production	M lbs	78
Mine life	Yrs	10
C1 Cash Cost	$/lb	2.15
AISC	$/lb	2.38
AIC	$/lb	2.47
Total Initial Capital (incl. contingency)	$M	525

Mineral Resource, Exploration and Growth Potential

The effective date of the Mineral Resource for the Zonia Copper Project is as of January 30, 2026 and does not include data from the current drill program underway. The Company’s inaugural 54,000-foot drill program commenced in January 2026 with the primary focus on converting resources to higher confidence categories and expanding the known resource. The Company intends to incorporate these results into an updated Mineral Resource estimate in the fourth quarter of 2026.

Indicated: 964 million pounds of copper contained in 194 million short tons grading 0.25% Cu⁽¹⁾
Inferred: 341 million pounds of copper contained in 86 million short tons grading 0.20% Cu⁽¹⁾

The Company’s current and future drilling objectives are to expand the mineral resource and contribute to a larger-scale and longer-life operation at Zonia, which Edge Copper believes has the potential to add real value to an already robust project.

Beyond the existing deposit, strong upside potential exists across the additional 3,700-acre land package northeast of the current resource area. This 1.5 × 2 km target features exposed mineralization, historic workings, and robust copper-molybdenum geochemical anomalies. Upcoming work will include IP geophysics followed by targeted drilling to evaluate this highly prospective zone.

Edge Copper is working in collaboration with GeologicAI, the global leader in High-Resolution Decision Engineering for the critical minerals sector. This collaboration utilizes GeologicAI’s advanced artificial intelligence and geological modeling technologies to shorten the exploration and development timeline at Zonia.

The technical collaboration integrates GeologicAI’s Resource Exploration Strategies (RXS) platform into Zonia’s exploration and development program.

Mineral Resource Notes:

Mineral Resources are reported in situ, using the CIM (2014) Definition Standards, and have an effective date of January 30, 2026.
The QP for the estimate is Mr. David K. Thomas, P.Geo., of DKT Geosolutions Inc.
Mineral Resource estimates for Zonia were constrained within a pit shell with pit slope angles of up to 50°.
A long-term Cu price of US$5.00/lb copper, and an NSR cut-off value of US$5.00/ton. Other inputs include grade variable metallurgical recoveries for oxide, transition, and sulphide domains, respectively; base mining cost of US$1.95/ton; processing and general and administrative costs of US$5.00/ton; off-site costs of US$0.05/lb of Cu.
Estimates have been rounded. Totals may not sum or multiply accurately due to rounding.

Development Outlook

Subsequent to completing the drilling program underway, Edge Copper is planning on delivering an updated mineral resource in Q4 2026. Based on its success, the Company’s objective is to expand the resource in order to extend the mine life and increase production. Concurrently. metallurgical testing, engineering and environmental and baseline studies will be ongoing in 2026 in preparation for a pre-feasibility study targeted for mid-2027.

With its location, infrastructure, and strong technical fundamentals, Zonia has the potential to become a key U.S. copper project, producing pure, sustainable copper to power the nation’s clean energy future.

Exploration and Growth Potential

Edge Copper’s 2026 exploration program envisions an up to 60,000 foot drill program focused on confirmation, infill, and step-out drilling to expand and upgrade the current resource. Based on these results, the Company expects to update the current mineral resource in the second half of 2026. Following its success, a planned program could support a significantly larger and longer-life operation at Zonia than previously reported.

The technical collaboration integrates GeologicAI’s Resource Exploration Strategies (RXS) platform into Zonia’s exploration and development program. The work plan includes:

Integrated geological, resource, and geometallurgical modeling to support feasibility-level confidence while minimizing cost and time.
Drill-hole spacing and optimization studies to define the most efficient path from inferred to measured resources.
Remote core logging and real-time scanning to reduce on-site personnel requirements and laboratory costs.

Development Outlook

Edge Copper is advancing Zonia toward an updated economic study that will reflect the expanded 2024 resource, modern cost assumptions, and optimized engineering. Subsequent phases will include metallurgical testing, mine planning, and permitting in preparation for a bankable feasibility study.

With its location, infrastructure, and strong technical fundamentals, Zonia has the potential to become a key U.S. copper project, producing pure, sustainable copper to power the nation’s clean energy future.