Mr. David Greenway reports

GIANT MINING CORP. ASSAYS PENDING FROM 2025 DRILL PROGRAM AT MAJUBA HILL COPPER-SILVER-GOLD DEPOSIT, NEVADA

All core from Giant Mining Corp.'s hole MHB-32, which was drilled to a total depth of 889.5 feet (271.1 metres), has been sampled and submitted to ALS Global Services (ALS Labs) for analysis. MHB-32 was the first hole of the 2025 five-hole diamond core drilling program, which is continuing at the Majuba Hill porphyry copper-silver-gold deposit in Pershing county, Nevada.

All core was sawn and sampled by Giant Mining personnel at the secured warehouse in Elko, Nev. Samples were delivered to ALS Global Services for analysis at its prep facility in Elko, Nev., and the resulting pulps are then shipped to its Vancouver lab for analysis.

Preliminary quick logging of the core at the project site and review of the sawn core provided early opportunities to examine the copper mineralization intersected by MHB-32. There are copper-bearing, magmatic-hydrothermal breccias with secondary copper minerals (azurite, malachite and chalcocite) that grade to strongly oxidized copper sulphides (chalcopyrite) deeper in the hole. At the bottom of the hole, unoxidized, primary chalcopyrite was observed in the breccias. MHB-32 was terminated sooner than planned due to logistical difficulties with the hole.

David Greenway, chief executive officer of Giant Mining, recently stated: "Gold has hit a recent high above $3,500 for the first time in history and copper is above $4.80 per pound. Never has there been a more significant mandate to bring resource production back into domestic jurisdictions and Majuba Hill has reached a critical moment in its development as we push towards our objective of having a [National Instrument] 43-101 compliant resource. We look forward to continuing the ongoing drill program adding to over 100 previous drill holes and over 80,000 feet of drilling at Majuba Hill."

E.L. (Buster) Hunsaker, senior consulting geologist, added: "Preliminary observation of the core from MHB-32 is encouraging. Based on previous data and alteration patterns observed in the 2024 core holes MHB-30 and MHB-31, this hole is expected to further define and extend the copper mineralized breccia zones. We anticipate that MHB-32 will confirm deeper extensions of the copper system at Majuba Hill and look forward to receiving the assays."

The company will continue to provide regular updates as the drill program progresses, including assay results, geological observations and any significant developments encountered during drilling. These updates will keep shareholders and stakeholders informed on the advancement of the Majuba Hill project and its potential to support a future resource estimate.

Quality assurance/quality control (QA/QC) measures, chain of custody

The company utilizes a QA/QC program using best industry practices at the Majuba Hill project. The samples are placed in cloth sample bags and are transported from the Giant Mining secure warehouse to the ALS Labs sample prep facility in Elko, Nev. ALS Labs then securely transports the prepared pulps to its analytical lab in North Vancouver, B.C.

Drill core samples are sawn in half lengthwise and one-half is placed in labelled cloth sample bags. All samples are analyzed for copper, gold, silver and 33 other elements. Gold is determined by ALS Labs method Au-AA23, which is a fire assay with an AAS finish on a 30-gram split. Copper, silver and the remaining 31 elements are determined by ALS Labs method ME-ICP61, which is a four-acid digestion and ICP-AES assay. Approximately 5 per cent of the submitted samples are drill duplicates and copper-gold-porphyry commercial standard reference material pulps. The sample rejects and remaining pulps will be retrieved from ALS Labs.

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 113 road kilometres (70 miles) southwest of Winnemucca, Nev., and 251 kilometres (156 miles) northeast of Reno. Access is by well-maintained county roads from the Imlay, Nev., exit on U.S. Interstate 80 and travelling westward 23 miles. People, roads, power and water are the basic elements when considering infrastructure, and Majuba Hill already has a solid infrastructure foundation for building a large facility, which will provide significant savings compared with more remote projects.

History:  historical producer

Drilling:  83,930 feet of drilling to date; rough replacement value of drilling $10.4-million (U.S.) in development costs

Mineralization:  The project shows indications of a potentially large copper-silver-plus-or-minus-gold-mineralized body with many features in common with both large porphyry copper, silver and gold projects.

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

Fully financed:  secured financing for 2025 drilling campaign

Qualified person

The scientific and technical information contained in this news release has been reviewed and approved by Mr. Hunsaker (CPG No. 8137), a non-independent consulting geologist who is a qualified person as such term is defined under NI 43-101, Standards of Disclosure for Mineral Projects.

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.