Mr. David Greenway reports

GIANT MINING HIGHLIGHTS TOURMALINE BRECCIA PIPE CONTROLS TO COPPER AND SILVER ZONES AT MAJUBA HILL COPPER-SILVER-GOLD PROJECT IN NEVADA

Giant Mining Corp. has released further results from its breccia study at the Majuba Hill project in Pershing county, Nevada. The continuing review of the exploration, core relogging, surface geologic mapping and additional surface geochemical sampling indicates many discrete breccia bodies.

Tourmaline breccia pipes have been observed in the drill core, the historic underground workings, and outcropping at the surface. High-grade copper and silver values reported previously in Giant news releases are associated with these breccia pipes (see news releases dated May 22, 2025, and Sept. 24, 2024). The intercepts in core holes MHB-30 and MHB-32 returned high-grade copper and silver as well as highly anomalous gold. The high-grade intercepts noted on Table 1 correlate with the margins of the breccia pipes.

David Greenway, president and chief executive officer of Giant Mining, stated: "Majuba Hill is demonstrating the hallmarks of a large, copper-silver mineralized system with meaningful gold potential. Silver prices have increased by more than 150 per cent over the past 12 months, strengthening the economics of silver-rich copper projects like Majuba. Our current geological and metallurgical programs are designed to systematically advance this system toward its full multimetal potential."

All three of the key commodities at the Majuba Hill project copper, silver and gold, have recently achieved record all-time highs, underscoring the strength of the market environment surrounding the project. According to TradingEconomics.com:

• Copper reached an all-time high of $6.07 (U.S.)/pound in January, 2025, and is currently trading at approximately $5.97 (U.S.)/lb.
• Silver achieved an all-time high of $93.22 (U.S.)/oz in January, 2025, and is currently trading around $90.77 (U.S.)/ounce.
• Gold hit an all-time high of $4,794.85 (U.S.)/oz in December, 2025, and is now trading at approximately $4,607.70 (U.S.)/oz.

According to TradingEconomics (data as of December, 2025), copper, silver and gold prices have recently reached historically high levels. TradingEconomics is an independent third party data provider and the company has not independently verified the information. Commodity prices are provided for general market context only and do not imply that Majuba Hill has demonstrated economic viability.

Majuba Hill's critically important characteristics are as follows:

Location:  Nevada, United States -- a globally top-ranked mining jurisdiction, ranked No. 1 in the Fraser Institute's 2022 Annual Survey of Mining Companies

Project size:   9,684 acres

Infrastructure:  The Majuba Hill property is located 113 road kilometres (70 miles) southwest of Winnemucca, Nev., and 251 kilometres (156 miles) northeast of Reno. It is accessible via well-maintained county roads from the Imlay, Nev., exit on U.S. Interstate 80, followed by a 23-mile drive west. People, roads, power and water are fundamental considerations for infrastructure, and Majuba Hill already benefits from a strong foundation in all these areas. This existing infrastructure provides a significant advantage, offering substantial cost savings compared with more remote projects.

History:  historical producer

Drilling:  Approximately 89,395 feet of drilling to date. Rough replacement value of drilling $12.1-million (U.S.) using current costs.

Mineralization:  The project shows indications of a potentially large Cu (copper) minus Ag (silver) plus/minus Au (gold) mineralized body with many features in common with both large porphyry copper, silver and gold projects.

Expandability:  The IP survey, deep drilling and stepout drilling indicate significant expansion potential, with mineralization open in all directions.

Fully financed:  The company has secured funding for its next phase of drilling at Majuba Hill.

Qualified person

The scientific and technical information contained in this news release has been reviewed and approved by E.L. "Buster" Hunsaker III, CPG 8137, a non-independent consulting geologist who is a qualified person as such term is defined under National Instrument 43-101 -- Standards of Disclosure for Mineral Projects.

Market awareness

Furthermore, the company announces it has entered into an agreement with Plutus Invest & Consulting GmbH on Dec. 28, 2025, for a term of one year commencing on Jan. 2, 2026. The company has agreed to pay Plutus an initial fee of 120,000 euros expandable up to a total of 480,000 euros if the company requests to expand the initial campaign. The services to be provided include consulting services related to advertising, marketing, PR strategies and investor awareness in the European market. Plutus has a business address at Buchtstr. 13, Bremen 28195, Germany, and can be contacted by e-mail (contact@plutuinves.de), or by telephone: (49-42117540174). Plutus (including its directors and officers) has an arm's-length relationship with the company. The company will not issue any securities to Plutus as compensation for its marketing services.

About Giant Mining Corp.

Giant Mining is focused on identifying, acquiring and advancing late-stage copper and copper/silver/gold projects to meet the growing global demand for critical metals. This demand is driven by initiatives like the Green New Deal in the United States and similar climate-focused programs worldwide, which require substantial amounts of copper, silver and gold for electric vehicles, renewable energy infrastructure, and the modernization of clean and affordable energy systems.

The company's flagship asset is the Majuba Hill copper, silver and gold district, located 156 miles (251 kilometres) from Reno, Nev. Majuba Hill benefits from a mining-friendly regulatory environment and strong local infrastructure. While still an exploration-stage asset, the geological footprint and scale of mineralization indicate that further work is clearly justified and that the system may host significant copper potential.

We seek Safe Harbor.