Mr. David Greenway reports

GIANT MINING EXPANDS ENGAGEMENT WITH RESPEC TO REFINE MODEL AND STRENGTHEN POTENTIAL AT MAJUBA HILL

Giant Mining Corp. has expanded its engagement with Respec Company LLC. Respec will incorporate silver assays from the recent and historic drilling for the Majuba Hill porphyry copper-silver-gold project in Pershing county, Nevada.

Purpose of engagement

Building on its mandate, Respec's updated interpretation and technical review of the Majuba Hill copper-silver-gold project is incorporating results from the company's most recent drill program, including core data from drill holes MHB-30 through MHB-36.

Silver will also be added into the company's internal project model. This work will refine the geometry of breccia bodies, evaluate the impact of new findings on project potential and help advance the geologic controls for copper mineralization. In addition, the review will guide the company's strategy for further drilling, determine the timing of metallurgical studies and support the evaluation of new target zones.

Notably as previously reported in the (Sept. 24, 2024, news release), Majuba Hill has previously delivered high-grade silver intercepts , including 74.0 feet of 30.1 grams per tonne Ag (silver) within 218.0 feet averaging 73.4 g/t Ag and 1.35 per cent Cu (copper) (drill hole MHB-27), underscoring the polymetallic strength of the system and its potential to generate significant byproduct value alongside copper and gold. These strong silver results will be integrated into the new 3-D model and help quantify the contribution of silver mineralization to overall project economics.

David Greenway, president and chief executive officer of Giant Mining, commented, "Continuing and expanding our engagement with Respec is a critical step in advancing Majuba Hil." said Mr. Greenway. "By integrating the silver assays along with the latest core data, we are refining the geological model and unlocking new layers of potential at a time when silver prices have surged to approximately $50 (U.S.) per ounce, representing a compound annual growth rate of roughly 35 per cent over the past year. This work provides a clear path for future drilling, metallurgical studies and target evaluation, all essential steps toward realizing Majuba Hill's full potential as a significant copper-silver-gold asset in Nevada -- a top-tier U.S. mining jurisdiction."

Jeffrey M. Bickel, principal geologist at Respec Company LLC, commented:

"Our ongoing work at Majuba Hill focuses on refining the geological and structural models to integrate new drilling data with advanced geostatistical and 3-D modelling techniques. Incorporating silver assay data -- alongside copper and gold, and including the high-grade silver intervals reported in 2024, allows us to map silver distribution within breccia bodies and vein arrays, evaluate its correlation with copper, and better constrain domaining and grade continuity. This refinement supports Giant Mining's efforts to prioritize stepouts, plan metallurgical testwork that addresses silver recovery and advance delineation of the copper-silver-gold system at Majuba Hill."

On Nov. 6, 2025, the U.S. Geological Survey (USGS) filed the final 2025 list of critical minerals in the federal register. The list retains all 50 minerals from 2022 and adds 10 more (total 60), notably including copper and silver, thereby strengthening federal focus on domestic supply chains through research, permitting and related policy tools. This designation underscores the strategic relevance of Majuba Hill's copper-silver system.

Strategic impact

The updated interpretation will provide Giant Mining with a stronger technical foundation for future economic potential while highlighting the potential of new target zones across the Majuba Hill property. These results will support the company's broader strategy of advancing Majuba Hill as a key domestic source of copper and silver at a time of heightened U.S. demand for secure, reshored supply chains.

Majuba Hill's critically important characteristics are as shown in the attached table.

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 Nov. 1, 2025, for a term of two months commencing on Nov. 7, 2025, in for a total payment of 120,000 euros to provide 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 at (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 is situated in a mining-friendly jurisdiction with supportive regulations and has the potential to become one of the next major copper deposits, critical for meeting the increasing need for this red metal.

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