0.8M @ 127 G/T Aueq In Surface Sampling And 5.0M @ 4.9 G/T Aueq In Drilling At Great Pacific Gold's Wild Dog Project

(MENAFN- Newsfile Corp) Vancouver, British Columbia--(Newsfile Corp. - September 24, 2025) - Great Pacific Gold Corp. (TSXV: GPAC) (OTCQX: GPGCF) (FSE: V3H) ("Great Pacific Gold," "GPAC," or the "Company") announces results from its expanded Phase 1 diamond drill program at its flagship Wild Dog Project ("Wild Dog" or the "Project"), located on the island of New Britain, East New Britain Province, Papua New Guinea ("PNG").

Key Highlights:

• Sampling of Exposed Vein Structures in Southern Oxide Area:
  
  • 0.8 m @ 127 g/t AuEq from Main Vein sample WDGS-036 (122 g/t Au, 2.7% Cu, 88 g/t Ag)

  • 2.4 m @ 22 g/t AuEq from Main Vein sample WDGS-027, 028, 029 (17.2 g/t Au, 2.3% Cu, 94 g/t Ag).

• Hole WDG-09 intercepted:
  
  • 5.0 m @ 4.91 g/t AuEq from 169m (4.49 g/t Au, 0.21% Cu, 7.6 g/t Ag);

  • Including: 2.0m @ 11.1 g/t AuEq from 169m (10.3 g/t Au, 0.41% Cu, 15.0 g/t Ag), and

  • 2.6 m @ 6.62 g/t AuEq from 182.4m (2.74 g/t Au, 2.16% Cu, 42.96 g/t Ag).

• Second drill rig being mobilized: additional camp capacity is being developed to support the second rig at the Wild Dog site.

• LiDAR survey completed with results due October 6, 2025: High-precision fixed-wing airborne LiDAR and large-format imagery survey covering 187 km2 across the Wild Dog district has been completed. The program will generate a Digital Terrain Model with sub-10 cm vertical accuracy, providing critical topographic control for geological modelling, drill planning, and infrastructure layout. The dataset will also support structural mapping and refine target definition across the broader Wild Dog corridor.

"Hole 9 was drilled approximately 30m to the north of hole 7, into an area where we had very little information," stated Greg McCunn, CEO. "The intercept with the main Wild Dog structure supports the continuity of the system. With hole 10 also intercepting the main structure a further 70 meters north (assays pending), we are increasingly confident in our geological model that is supporting the Phase 1 drill program. With the second rig being mobilized, we are expecting to accelerate the completion of the planned 28 holes at Sinivit which are providing valuable information on vein orientation allowing us to start testing the system at depth. Mobile MT geophysics has highlighted significant potential at depth and along strike to both the North and South from Sinivit on the large-scale epithermal Wild Dog corridor."

"The recent mapping and sampling campaign in the historic Southern Oxide pit area was undertaken to support modeling of the vein structures intersected in drill holes WDG-03, 04, 05 and 06 earlier in the Phase 1 program. The high-grade results in the veins exposed in the historic pit confirm the high-grade nature of the system."

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. A second drill rig is in the process of being mobilized to site.

Figure 1: Long section through the Sinivit target area showing drilling completed to-date with key intervals.

To view an enhanced version of this graphic, please visit:

Since commencing in May 2025, GPAC has completed ten drill holes at Sinivit. Hole WDG-10 experienced poor core recovery within the main Wild Dog structure, which was intercepted from 173 meters to 185 meters. Although samples have been collected and submitted for assay, a decision was made to re-drill the hole to ensure full recovery of the target zone, and WDG-10A is well underway and currently at 165 meters depth. 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).

Hole ID	Easting	Northing	RL	Dip	Azi	Max Depth (m)	Status
WDG-01	394358.3	9488853.5	945	-50	115	40.1	Abandoned
WDG-02	394426.0	9489024.2	900	-53	050	124.6	Completed
WDG-03	394384.9	9488926.5	924	-50	053	127.6	Completed
WDG-04	394384.8	9488926.5	924	-50	75	120.6	Completed
WDG-05	394384.8	9488926.5	924	-50	116	105.9	Completed
WDG-06	394428.6	9488923.1	911	-50	352	69.0	Completed
WDG-07	394457.5	9489375	993	-61	114	201.3	Completed
WDG-08	394455.5	9489373.0	993	-57	127	224	Completed
WDG-09	394459.5	9489374.0	993	-58	85	203	Completed
WDG-10	394475.1	9489484	965	-58	114	220	Completed
WDG-10A	394475.1	9489484	965	-57	114	TBD	In progress

Table 2: Wild Dog Drill Hole Key Assay Results (WDG-02 to WDG-08 results previously announced).

Hole ID	From (m)	To (m)	Interval 1 (m)	Gold (g/t)	Silver (g/t)	Copper (%)	Gold Eq. 2 (g/t)
WDG-02	65.0	72.0	7.0	5.49	68.84	2.96	10.91
including	65.0	67.0	2.0	10.73	114.64	2.23	15.53
WDG-03	102.0	104.3	2.3	1.68	6.48	0.12	1.94
including	103.55	104.3	0.75	4.05	10.90	0.17	4.45
WDG-04	62.0	68.0	6.0	8.31	27.56	2.37	12.35
including	64.0	68.0	4.0	12.25	36.76	1.71	15.35
including	64.0	66.4	2.4	19.76	57.75	2.59	24.48
WDG-05	72.0	77.0	5.0	1.28	11.71	0.25	1.80
including	72.0	75.0	3.0	1.91	15.36	0.31	2.58
WDG-06	12.0	15.5	3.5	4.61	48.36	4.86	12.79
including	13.7	14.3	0.6	7.44	73.40	10.42	24.61
WDG-07	153.0	163.0	10.0	2.99	10.92	0.32	3.61
including	153	158.1	5.1	4.77	14.54	0.54	5.79
WDG-07	172.0	173.2	1.2	7.30	93.5	1.14	10.17
including	172.5	173.2	0.7	12.00	178.0	1.94	17.10
WDG-08	154	162.4	8.4	46.46	59.63	1.90	50.12
including	154	157.8	3.8	93.30	128.72	4.74	102.2
including	157	157.8	0.8	322.0	84.5	4.26	329.65
WDG-08	180	188	8	1.95	4.19	0.13	2.20
including	180	184	4	3.32	3.71	0.16	3.62
WDG-09	169	174	5	4.49	7.60	0.21	4.91
including	169	171	2	10.31	15.0	0.41	11.13
WDG-09	182.4	185.0	2.6	2.74	42.96	2.16	6.62
including	182.8	184.3	1.5	4.17	41.87	1.89	7.61

Notes:

Drill highlights presented above are core lengths (true widths are not known at this time).

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.

WDG-09 Summary

Hole WDG-09, drilled approximately 30 metres north of WDG-07, successfully intersected the main Wild Dog structure and returned 5.0 metres at 4.9 g/t AuEq from 169 metres, including 2.0 metres at 11.1 g/t AuEq. A second mineralised zone was encountered between 182.4 and 185.0 metres, averaging 2.6 metres at 6.6 g/t AuEq, including 1.5 metres at 7.6 g/t AuEq. This deeper interval contained exceptionally high copper values, with assays up to 5.5% Cu accompanied by elevated silver grades, reflecting the presence of bornite and chalcopyrite observed in core. The mineralisation is hosted within banded quartz-silica breccias and vein material, consistent with the high-sulphidation epithermal style recognised at Sinivit. These results confirm continuity of the Wild Dog system to the north, while also highlighting the potential zonation within the structure, where in this case a high-grade gold shoot is underlain by copper-silver rich sulphide domains. Importantly, the combination of strong Au, Cu, and Ag values supports the potential for vertically extensive mineralized shoots, strengthening the broader geological model and demonstrating the prospectivity of the Wild Dog vein corridor at depth.

Figure 2: Drill core from Hole WDG-09 (182.5 m) illustrating a quartz-silica breccia cut by a colloform banded sulphide vein. Massive chalcopyrite with associated bornite occurs as coarse infill along the vein margins and in open spaces, overprinting black silica breccia clasts. This mineral assemblage is characteristic of a high-sulphidation epithermal system and corresponds to assays returning multi-percent copper and elevated Au-Ag values from this interval.

To view an enhanced version of this graphic, please visit:

Figure 2: Drill core from Hole WDG-09 (183.15 m) displaying colloform banded quartz-silica veining with coarse-grained sulphide mineralisation. Bornite occurs as blebs and bands with associated chalcopyrite along quartz vein margins and in the matrix.

To view an enhanced version of this graphic, please visit:

Southern Pit Rock Chip Sampling

On September 10, 2025, GPAC geologists undertook a sampling and mapping campaign in the historic Southern Oxide Pit area. Wild Dog main Vein structures which were intercepted in drill holes WDG-03, 04, 05 and 06 outcrop in the historic pit area and sampling and mapping was undertaken to support modelling of the veins in the area.

In total, seventeen samples were collected. In the west wall of the historic South Oxide Pit, the main vein can be observed (Figure 3).

Figure 3: Photo of sample location for WDGS-036 which returned 0.8 meters at 127 g/t AuEq. The main vein in this area shows black silica, grey-white quartz with chalcocite, bornite and chrysocolla.

To view an enhanced version of this graphic, please visit:

In the east wall of the historic South Oxide Pit, the main vein can also be observed (Figure 4).

Figure 4: Photo of outcrop of main vein location for samples WDGS-027, 028, and 029 which returned 2.4 meters at 22 g/t AuEq. Black silica with stage 2 quartz veining is evident in sample WDGS-027 with predominantly white quartz with chalcopyrite in WDGS-028.

To view an enhanced version of this graphic, please visit:

On behalf of Great Pacific Gold
Greg McCunn, Chief Executive Officer and Director

MENAFN24092025004218003983ID1110104587