Mr. Greg McCunn reports

GREAT PACIFIC GOLD COMMENCES DRILLING AT KASIE RIDGE, WILD DOG PROJECT

A second diamond drill rig has arrived on site at Great Pacific Gold Corp.'s flagship Wild Dog project, located on the island of New Britain, East New Britain province, Papua New Guinea, and the company has commenced drilling on the Kasie Ridge epithermal gold-copper target.

Kasie Ridge represents the largest preserved advanced argillic alteration system identified to date on the Wild Dog project. The prospect forms part of the broader Nengmutka hydrothermal system and lies northeast of the central Wild Dog corridor. It is interpreted as a structurally controlled lithocap developed above, or adjacent to, a potential high-sulphidation epithermal or porphyry system at depth. The scale, intensity and mineralogical maturity of the alteration footprint are consistent with the upper levels of robust magmatic-hydrothermal systems recognized in major high-sulphidation and porphyry districts globally.

This marks the first drilling ever undertaken at Kasie Ridge.

Key Kasie Ridge target highlights:

• Extensive advanced argillic alteration footprint extending approximately 1.5 to 2.0 kilometres in strike and several hundred metres in width;
• Alteration assemblage includes pyrophyllite, dickite, kaolinite, alunite, diaspore and zunyite, consistent with high-temperature, acidic hydrothermal conditions;
• Coincident magnetic anomaly interpreted as hydrothermal modification of a shallow magnetic source;
• MobileMT and resistivity inversions define conductive clay-rich zones with localized deeper resistive features interpreted as potential silica-rich or structurally focused zones;
• Structural interpretation highlights multiple north-northwest/northwest-trending lineaments converging beneath the ridge;
• First drill program to test the system beneath the alteration cap under way with rig No. 2.

"Kasie Ridge is a very technically compelling target on the Wild Dog project. The scale of advanced argillic alteration, the presence of high-temperature minerals such as zunyite and diaspore, and the convergence of structural corridors into a coincident magnetic feature all point toward a robust hydrothermal centre. Lithocap systems are inherently high risk, but they are also where many major high-sulphidation and porphyry discoveries originate. This drill program is about applying disciplined mineral systems thinking to test whether we are positioned above something significant," stated Callum Spink, vice-president, exploration. "Drilling with rig No. 1 is also progressing well with a second hole under way at the Kavasuki target. Having two rigs turning full-time will allow us to increase the pace of our exploration in 2026, as planned."

Kasie Ridge target overview

Kasie Ridge is located on the northern end of the 15-kilometre Wild Dog structural corridor and approximately 4.5 kilometres north of the Sinivit target where drilling has delineated multiple high-grade shoots (northern sulphide shoot and the southern oxide shoot).

The presence of zunyite and diaspore is particularly significant as these minerals are commonly associated with higher-temperature, highly acidic hydrothermal conditions proximal to a heat source.

Lithocap systems of this scale are commonly developed above porphyry-epithermal systems and may be barren at surface while overlying potentially mineralized feeder structures at depth.

Modern data sets significantly enhance the geological interpretation at Kasie Ridge relative to historical reconnaissance work. These include:

• High-resolution lidar structural interpretation;
• Magnetic inversion modelling;
• MobileMT conductivity modelling; and
• 3-D resistivity cross-sections.

Magnetic data define a coincident magnetic feature beneath the ridge interpreted to potentially reflect hydrothermal modification of a shallow magnetic source. Resistivity inversions identify conductive clay-rich domains with localized deeper resistive features interpreted as potential silica-rich or structurally focused zones.

Structural interpretation highlights multiple north-northwest/northwest-trending lineaments converging beneath Kasie Ridge. This structural junction geometry is consistent with focused hydrothermal fluid pathways recognized in mineralized systems globally.

The company's working interpretation considers Kasie Ridge to represent the preserved upper levels of a high-sulphidation epithermal system or lithocap developed above a potential porphyry source. In such systems:

• Advanced argillic alteration forms at shallow levels from acidic magmatic fluids;
• Vertical clay mineral zonation reflects temperature gradients toward feeder zones;
• Higher-temperature minerals (pyrophyllite, diaspore and zunyite) are commonly proximal to upflow conduits; and
• Mineralization may occur beneath or laterally offset from the alteration cap.

Importantly, alteration systems of this scale require sustained hydrothermal fluid flow and structural permeability, characteristics commonly associated with mineralized magmatic centres.

Lithocap systems and targets are inherently high risk as advanced argillic alteration may develop without associated economic mineralization at depth; however, their scale and mineralogical zonation provide strong vectors toward potential concealed mineral systems.

Comparable geological settings include districts such as Lepanto (Philippines), Wafi-Golpu (Papua New Guinea) and Onto (Indonesia), where lithocap alteration masks deeper porphyry or high-sulphidation mineralization (comparisons are provided for geological context only and do not imply the presence of similar mineralization at Kasie Ridge).

The first drill hole, KAS-01, has been collared within the highest-temperature portion of the advanced argillic assemblage. The hole is designed to test the interpreted intersection of two conductive lineaments, evaluate the margin of a moderately conductive upflow zone defined by resistivity inversion modelling, and assess vertical alteration zonation and sulphide development at depth.

Results from KAS-01 will guide follow-up drilling and determine whether the prospect advances to more systematic testing.

Kasie Ridge represents a technically compelling, first-principles mineral system test within the broader Wild Dog corridor.

Qualified person

The technical content of this news release has been reviewed, verified and approved by Callum Spink, the company's vice-president, exploration, who is a member of the Australian Institute of Geoscientists, MAIG, a qualified person as defined by National Instrument 43-101 (Standards of Disclosure for Mineral Projects). Mr. Spink is responsible for the technical content of this news release. Mr. Spink is not independent of the company.

About Great Pacific Gold Corp.

Great Pacific Gold's vision is to become the leading gold-copper development company in Papua New Guinea. The company has a portfolio of exploration-stage projects in PNG, as follows:

• Wild Dog project: The company's flagship project is located in the East New Britain province of PNG. The project consists of a large-scale epithermal target, the Wild Dog structural corridor, stretching 15 kilometres in strike length and potentially over 1,000 metres deep based on a recent MobileMT geophysics survey. The survey also highlighted the Magiabe porphyry target, adjacent to the epithermal target and potentially 1,000 metres in diameter and over 2,000 metres deep. Drilling of the epithermal structure on the Sinivit target has yielded high-grade results, including WDG-08, which intercepted 8.4 metres at 50 grams per tonne gold equivalent from 154 metres. The current drilling program will extend into 2026 with second drill rig expecting to be operational in early February, 2026.
• Kesar project: Located in the Eastern Highlands province of PNG and contiguous with the mine tenements of K92 Mining Inc., the Kesar project is a greenfield exploration project with several high-priority targets in close proximity to the property boundary with K92. Multiple epithermal veins at Kesar are on strike and have the same orientation as key K92 deposits, such as Kora. Exploration work to date by the company at the Kesar project has shown that these veins have high grades of gold present in outcrop and very elevated gold in soil grades, coincident with aeromagnetic highs. The company conducted a diamond drill program on key target areas at the Kesar project from November, 2024, to May, 2025, and has developed a follow-up phase 2 program for 2026.
• Arau project: Also located in the Eastern Highlands province of PNG, the Arau project is south of and contiguous to the mine tenements of K92. Arau contains the highly prospective Mount Victor exploration target with potential for a high-sulphidation epithermal gold and base metal deposit. A phase 1 reverse circulation drilling program was completed at Mount Victor in August, 2024, with encouraging results. The Arau project includes the Elandora licence, which also contains various epithermal and copper-gold porphyry targets.

The company also holds the Tinga Valley project in PNG.

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