Mr. Greg McCunn reports

GPAC EXPANDS WILD DOG DRILL PROGRAM TO 5,000M AND INITIATES LIDAR SURVEY

Great Pacific Gold Corp. has expanded its phase 1 diamond drill program at the Wild Dog project located on the island of New Britain, East New Britain province, Papua New Guinea, from 2,500 metres to 5,000 metres.

The phase 1 program commenced in May, 2025, and is designed to test high-priority targets over a 1.5-kilometre strike length within the Wild Dog epithermal vein structural corridor. The high-grade nature of the system has already been confirmed by multiple strong intercepts. In addition, recent processing of MobileMT geophysical data has highlighted the exceptional scale of the epithermal system and the potential for a major porphyry copper-gold system adjacent to the veins -- a setting analogous to the Wafi-Golpu deposit in PNG (mineralization at Wafi-Golpu is not necessarily indicative of mineralization at Wild Dog).

The expanded program totals 28 diamond drill holes and is expected to continue into early 2026. Drilling to date has only tested a small portion of the mineralized corridor, which remains open to the north, to the south and at depth.

Key highlights:

• Program expanded: phase 1 drilling at Sinivit Target increased from 2,500 m to 5,000 m following multiple high-grade hits and new geophysical targets;
• High-grade intercepts across multiple holes (previously announced, Table 2):
  • Near surface:
    • WDG-02: 7.0 metres of 11.2 grams per tonne gold equivalent from 65 m;
    • WDG-04: 6.0 m of 8.6 g/t AuEq from 62 m;
    • WDG-06: 3.5 m of 13.1 g/t AuEq from 12 m;
  • Deeper mineralization:
    • WDG-07: 10.0 m of 4.0 g/t AuEq from 153 m;
• Stepout to test untested ground: final Sinivit hole planned as a large stepout to the north toward Kavasuki to test a gap with no historical drilling but strong geophysical continuity;
• Next catalyst: assay results pending for WDG-08 and WDG-09, expected September, 2025.

"The success of the phase 1 diamond drilling at the Sinivit target to date has led us to expand our program, and we expect to continue drilling at Sinivit into early 2026," stated Greg McCunn, chief executive officer. "The final hole in the Sinivit program is designed as a major step out to the north towards Kavasuki to test a gap area, where there is no historical data, but geophysics suggests a connection to the Sinivit target. This stepout will be a precursor to moving the diamond drill to Kavasuki for phase 2 drilling in 2026."

Since commencing in May, 2025, Great Pacific has completed nine drill holes at Sinivit, with the 10th hole under way. WDG-08 and WDG-09 have been completed, and assays are pending. Details of the drilling are shown with key assay results received to date in table 2.

Results

Next-level target definition with lidar

In parallel with the expanded drilling, Great Pacific has commenced mobilization for a high-precision, fixed-wing airborne lidar and large-format imagery survey across the Wild Dog district. The approximately 200-square-kilometre survey will be flown using a Teledyne Galaxy lidar sensor and a Vexcel UltraCam Eagle large-format imaging system, both mounted in a dedicated fixed-wing platform. This combination is capable of penetrating dense PNG jungle canopy to deliver a sub-10-centimetre vertical accuracy digital terrain model and ultrahigh-resolution orthorectified imagery.

Airborne lidar not only provides essential survey base points for operations but can also enhance geological maps, and, when combined with MobileMT geophysical data, can define high-priority drill collars with precision.

The survey is scheduled to commence in August, 2025, with processed data sets feeding directly into phase 2 drill planning and regional target generation.

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, and a qualified person as defined by National Instrument NI 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.

Quality assurance/quality control

The company adheres to industry best practices for quality assurance and quality control. Drill core samples were submitted to Intertek Minerals Ltd. in Lae, Papua New Guinea, an ISO 9001-certified laboratory. Samples were securely sealed in polyweave bags with single-use tie-locks to maintain chain of custody. Analytical testing was completed using fire assay with additional multielement MS48 analysis under way.

Diamond drill hole WDG-02 was drilled using a combination of HQ and PQ diameter core. Certified reference materials (standards) and blanks were inserted into the sample stream in accordance with industry-standard protocols. Blanks were routinely inserted after high-grade intervals, and certified standards were included at a frequency of at least 5 per cent. All assay batches received to date have passed QA/QC review and fall within acceptable tolerance limits. Core recoveries for all holes were within acceptable ranges, with sampling procedures carefully managed in intervals where ground conditions were variable or fragile.

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 km 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-02, which intercepted 7.0 metres at 11.2 g/t gold equivalent from 65 metres. The current drilling program will extend into 2026 with 5,000 metres planned over 28 holes.
• 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 is working on developing a follow-up phase 2 program for first quarter 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/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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