Mr. Farshad Shirvani reports

CASA MINERALS ANNOUNCES 2026 AGGRESSIVE EXPLORATION PLANS FOR CONGRESS GOLD MINE AND ARSENAULT PROJECTS

Casa Minerals Inc. has provided a corporate update and is discussing its plans for an expanded exploration program in 2026 across its mineral properties in Arizona, U.S., and British Columbia, Canada.

2026 exploration strategy

In response to strengthening global demand for resources and commodities, Casa is advancing aggressive exploration and development plans for its key mineral assets:

• Congress gold mine project (Arizona) -- advanced exploration and development targeting gold, silver and copper mineralization;
• Arsenault gold-copper project (British Columbia) -- copper-gold-silver exploration with advanced geophysical targeting.

The company's strategic positioning with projects spanning two jurisdictions provides operational flexibility to maintain active exploration programs throughout the year across multiple properties.

Congress gold mine project update

The Congress gold mine, historically one of Arizona's largest gold-silver producers, represents an advanced exploration opportunity with substantial historic production data.

Historical resource context

Historical operators reported resource estimates and production figures for the Congress gold mine. These historical estimates are disclosed solely for context and have not been verified by a current qualified person. The historical estimates do not conform to current National Instrument 43-101 standards, are not classified as current mineral resources or mineral reserves, and should not be relied upon. A qualified person has not done sufficient work to classify the historical estimates as current mineral resources or mineral reserves, and Casa is not treating the historical estimates as current mineral resources or mineral reserves.

Previous operators, including Echo Bay Mines, reported estimates in the range of 400,000 to 500,000 tons at grades of approximately 0.3 ounce per ton (oz/t) (9.33 grams per tonne (g/t)) gold in certain zones. The mine historically produced approximately 400,000 to 500,000 ounces of gold during intermittent operations through 1992.

2026 exploration objectives

Casa's 2026 program at Congress aims to:

• Conduct systematic drilling to bring the project and its extended potential mineralization to National Instrument 43-101-compliant resource standards;
• Build upon the company's confirmatory drill programs that have validated portions of the historical data;
• Define a clear pathway for rapid resource definition and project advancement;
• Expand exploration in priority target areas identified through compilation of historical data and recent drilling.

The company's confirmatory drilling to date, combined with extensive historic data compilation, has established a framework for systematic resource delineation in accordance with modern standards.

Arsenault project update

The Arsenault copper-gold-silver project in Northern British Columbia has advanced significantly following the completion of a state-of-the-art 3-d induced polarization (IP) geophysical survey in 2025.

2025 30D IP survey results

The recently completed 3-D ground-based IP survey has generated compelling geophysical signatures that management, with extensive experience in similar geological settings, considers highly prospective. Key highlights include:

• Significant chargeability anomalies indicating potential sulphide mineralization;
• Three-dimensional geophysical signatures with substantial scale and continuity;
• Strong correlation with previous airborne electromagnetic survey results from 2017;
• Multiple high-priority drill targets identified.

The IP survey covered approximately 12 square kilometres with 60 kilometres of survey lines utilizing high-density data acquisition with state-of-the-art instrumentation.

2026 exploration plans

Detailed exploration planning is under way for both properties. The company anticipates releasing comprehensive technical details and specific program parameters for the Congress and Arsenault projects in follow-up news releases as planning is finalized.

Management commentary

"Casa is well positioned to capitalize on the strengthening commodities market with two highly prospective projects at different stages of advancement," stated Farshad Shirvani, president and chief executive officer. "At Congress, we have a clear path forward to define resources to modern standards on a historically productive gold system. At Arsenault, our recent geophysical work has identified compelling drill targets with signatures our team has successfully followed to discovery in similar settings. We look forward to an active 2026 field season across both properties."

Qualified person

Erik Ostensoe, PGeo, a director and chief geologist of the company, a qualified person as defined by National Instrument 43-101, has reviewed and approved the scientific and technical disclosure in this news release.

About Casa Minerals Inc.

Casa Minerals is a mineral exploration company focused on gold, copper and strategic minerals exploration in North America. The company holds a 90-per-cent interest in the historical Congress gold mine in Arizona and is advancing multiple projects in British Columbia, including the Arsenault copper-gold-silver project. Casa's experienced management team is committed to creating shareholder value through the discovery and development of economic mineral deposits.

We seek Safe Harbor.