FireFox Continues to Expand the East Zone with High-Grade Drill Results, including 13.75 g/t Gold over 12.4 Metres in Another Step-out Hole at the Mustajärvi Gold Project, FinlandSODANKYLÄ, FINLAND / ACCESS Newswire / December 8, 2025 / FireFox Gold Corp. (TSX.V:FFOX)(OTCQB:FFOXF)("FireFox" or the "Company") is pleased to report results from an additional four holes of its 2025/26 diamond drilling program at the Company's 100%-held Mustajärvi Gold Project in Lapland, Finland. Drill hole 25MJ005 is among the best holes yet drilled on the property, extending both shallow and deeper high-grade gold zones well to the west from previous drilling at the East Zone. Highlighted intervals are shown below:12.4 metres averaging 13.75 g/t Au from 37.9 metres3.75 metres averaging 19.65 g/t Au from 99.85 metres5.7 metres averaging 17.71 g/t Au from 217.0 metresThe four holes reported in this release (25MJ005 - 25MJ008) test for extensions of mineralization in the East and Northeast Zones (Figure 1). Each hole intersected gold-elevated zones, including high-grade intercepts as shown in Table 1, and provided useful information about the controls on and continuation of the mineralized system at the Mustajärvi Project.Carl Löfberg, FireFox's CEO, commented about the new results, "Drill hole 25MJ005 is an outstanding result for the growth of the Mustajärvi discovery. Combined with drill hole 25MJ001, these two holes demonstrate continuity of the East Zone gold system well to the southwest from the high-grade core we discovered in 2022. Even better, the system seems to be strengthening in this most recent hole over the 45-metre step out from 25MJ001, as both gold and tellurium grades increase. Both of these holes confirmed a strong electrical geophysics anomaly with stacked intervals of high-grade gold. Both the shallow (This work is part of the ongoing program of up to 10,000 metres of diamond drilling planned for Mustajärvi through spring of 2026. The program mixes infill and step-out drilling at existing mineralized zones, and it also tests some new targets both proximal and distal to the main mineralized structures. The team completed the first round of drilling in late October, including 15 drill holes totalling 3985.3 metres. Final assays are pending for the remaining seven holes from the first phase. The team are now conducting the second round of drilling, which is expected to run to the end of January 2026.Mustajärvi Project and Drill Program SummaryThe Mustajärvi Project lies along the highway between the cities of Kittilä and Sodankylä, approximately 17 kilometres east of Kittilä. The project is at a relatively early stage as FireFox and predecessor companies have drilled approximately 15,752 metres prior to the commencement of this program. Drilling has so far delineated three different lodes of gold mineralization along more than 1.5 kilometres of strike. Of the newly reported drill holes 25MJ005, 25MJ006 and 25MJ008 tested for extensions to the East Zone mineralization in three directions, while 25MJ007 tested a gap within the Northeast Zone drilling (Figure 1).Figure 1. Drill hole locations at Mustajärvi highlighting recent holes Drill hole 25MJ005 tested the conductive zone previously identified by fixed loop electro-magnetic (FLEM) geophysical survey (reported February 20, 2025). An earlier hole from this program, 25MJ001, was collared 45 metres to the northeast and intersected stacked intervals of high-grade gold mineralization coinciding with the conductor, as reported on October 27, 2025.This hole was collared in thin glacial sediments (approximately 9.0 metres deep), overlying ultramafic volcanic rocks. High-grade gold mineralization starts immediately after the contact between ultramafic volcanic rocks and intensely albite-altered and silicified intermediate tuffites. Gold here is associated with patchy and semi-massive pyrite mineralization, accompanied by quartz-carbonate-tourmaline-pyrite (QCTP) veining and brecciation. The first mineralized interval yielded a high-grade gold zone of 12.4 metres averaging 13.75 g/t Au from 37.9 metres downhole, including 4.1 metres averaging 37.45 g/t Au (Figure 2). This high-grade zone is adjacent to a mafic dike or sill (sometimes the dikes are of ultramafic composition), which is a recurring theme for the high-grade zones at Mustajärvi.Figure 2. Highly mineralized interval from 25MJ005 with selected assays - note pervasive albite alteration (pink), abundant pyrite, and tourmaline (black) and crosscutting mafic dike. Another high grade-grade gold interval of note was intersected from 99.85 metres downhole returning 3.75 metres averaging 19.65 g/t Au, including 0.8 metres at 53.3 g/t Au and 1.0 metre at 24.6 g/t Au. Mineralization is associated with patchy and semi-massive pyrite hosted in intensely albite-altered metasediments.These shallower intervals of high-grade gold mineralization are associated with enrichment in the typical suite of pathfinder elements seen at