Great Pacific Gold Corp. (TSX-V: GPAC) (OTCQX: FSXLF) (FSE: V3H) announces results from its recently expanded Phase 1 diamond drill program at its flagship Wild Dog Project, located on the island of New Britain, East New Britain Province, Papua New Guinea

Key Highlights:

• Hole WDG-08 intercepted:

• 8.4 m @ 49.9 g/t AuEq from 154m (46.5 g/t Au, 1.7% Cu, 66.3 g/t Ag),
• Including: 3.8m @ 105 g/t AuEq from 154m (93.3 g/t Au, 6.6% Cu, 142 g/t Ag).

• Sinivit target yielding high-grade, near surface results: nine of twenty-eight holes completed for 1,214 of 5,000 meters. WDG-10 underway stepping out 100 meters to the north of WDG-09.
• Next Catalyst: Assay results pending for WDG-09, approximately 60m north of WDG-08.
• Re-assay results for hole WDG-04 show increased copper results (Table 2).

“Hole WDG-08 has delivered one of the best exploration hits in PNG in recent years, 8.4 metres at nearly 50 grams gold equivalent, including a bonanza zone grading over 300 g/t Au,” stated Callum Spink, Vice President Exploration. “These results highlight the exceptional tenor of this epithermal system. The combination of multi-ounce gold with significant copper and silver credits confirms the presence of a robust polymetallic vein structure. Importantly, the semi-massive sulphide textures and associated copper mineralization in this interval demonstrate that we are drilling directly into the heart of the system. With mineralization open along strike and at depth, we see clear potential for continuity of these high-grade zones and for scale across the broader 15 km structural corridor.”

“The Sinivit target continues to generate high-grade near-surface mineralized intercepts,” stated Greg McCunn, CEO. “With the drilling program at Sinivit expanded to 5,000 meters, we are looking forward to continued drilling success for the balance of 2025 from Phase 1. Mineralization is open at depth, and North-South along strike over the 15 km corridor. With both high-grade and district-scale, the Wild Dog epithermal target has the potential to host a major gold-copper deposit. In parallel to our continued drilling, we are starting to increase our field activity on the adjacent Magiabe porphyry in preparation for a potential maiden drilling program in 2026.”

 Figure 1: Long section through the Sinivit target area showing drilling completed to-date with key intervals as well as proposed holes in the expanded program.

 Photo 1: WDG-08 at 155.5m – drill core with semi-massive sulphides with visible chalcopyrite and bornite grading 55 g/t Au and 7.9% Cu.

 Photo 2: WDG-08 at 155.7m – drill core with semi-massive sulphides with visible chalcopyrite and bornite grading 55 g/t Au and 7.9% Cu.

Wild Dog Phase 1 Diamond Drill Program

The Phase 1 program commenced in May 2025 and is designed to test the Sinivit target, a 1.5 km strike length within the 15 km Wild Dog epithermal vein structural corridor (Figure 1). 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 now 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, south, and at depth.

Since commencing in May 2025, GPAC has completed nine drill holes at Sinivit, with the tenth hole underway. WDG-08 and WDG-09 have been completed, and assays are pending for WDG-09. Details of the drilling are shown in Table 1 with key assay results received to-date are shown in Table 2.

Results

Table 1: Wild Dog Drill Hole Details (PNG94 UTM coordinates).

Table 2: Wild Dog Drill Hole Key Assay Results (WDG-02 to WDG-07 results previously announced).

Notes:

1. Drill highlights presented above are core lengths (true widths are not known at this time).
2. Gold equivalent (AuEq) exploration results are calculated using longer-term commodity prices with a copper price of US$4.50/lb, a silver price of US$27.50/oz and a gold price of US$2,000/oz. No metallurgical testing has been carried out on Wild Dog mineralized samples. For AuEq calculations, recovery assumptions of Au 92.6%, Ag 78.0%, and Cu 94.0% were used based on K92 Mining’s stated recovery results in an Updated Definitive Feasibility Study for the Kainantu mine.

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 poly-weave bags with single-use tie-locks to maintain chain of custody. Analytical testing was completed using fire assay with additional multi-element MS48 analysis underway.

Diamond drill hole WDG-02 was drilled using a combination of HQ and PQ diameter core, while the remainder of the holes were drilled with PQ. 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%. All assay batches received to date have passed QAQC 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

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 15km in strike length and potentially over 1,000 meters 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 meters in diameter and over 2,000 meters deep. Drilling of the epithermal structure on the Sinivit target has yielded high-grade results, including WDG-02 which intercepted 7.0 meters at 11.2 g/t AuEq from 65 meters. The current drilling program will extend into 2026 with 5,000 meters planned over 28 holes.
• Kesar Project: located in the Eastern Highlands province of PNG and contiguous with the mine tenements of K92 Mining Inc. (“K92”), 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 are working on developing a follow-up Phase 2 program for Q1 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 Mt. Victor exploration target with potential for a high sulphidation epithermal gold-base metal deposit. A Phase 1 Reverse Circulation drilling program was completed at Mt. 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.