Banyan Gold Intersects 5.58g/t Au Over 21.7 m in New High-grade Gold Zone at the Powerline Deposit, AurMac Project, Yukon, Canada

June 17, 2026, TSX-V: BYN

VANCOUVER, BC, June 17, 2026 - Banyan Gold Corp. (the "Company" or "Banyan") (TSX-V: BYN) (OTCQB: BYAGF) is pleased to announce it has intersected high-grade gold (“Au”) mineralization in the Powerline Deposit (“Powerline”) southwest of the main high-grade core. These diamond drill intersections highlight a new potential high-grade zone at the AurMac Project (“AurMac”), Yukon, Canada.

Highlights from New Powerline Southwest Zone:

• AX-26-853 – 13.00 g/t Au over 9.2m within 5.58 g/t Au over 21.7m, including high-grade interval of 62.66 g/t Au over 1.8m and;

1.64 g/t Au over 11.5m within 0.70 g/t Au over 32.2m

• AX-26-826 – 0.99 g/t Au over 9.4m within 0.65 g/t Au over 20.0m; including very high-grade interval of 17.30 g/t Au over 0.4m
• AX-26-829 – 2.51 g/t Au over 11.7m and 2.75 g/t Au over 9.3m within 0.90 g/t Au over 38.7m; including very high-grade interval of 39.80 g/t Au over 0.5m
• AX-26-830 – 0.70 g/t Au over 28.5m within 0.67 g/t Au over 56.8mm
• AX-26-835 – 1.29 g/t Au over 8.0m
• AX-26-842 – 0.96 g/t Au over 7.6m within 0.37 g/t Au over 33.9m

“The successful step-outs from 2025 in the southwest portion of Powerline, have defined a new potential high-grade zone (Figures 1 and 2), highlighted with drill results of 13.00 g/t Au over 9.2m, within 5.58 g/t Au over 21.7m in hole AX-26-853, including 62.66 g/t over 1.8m (see Figure 3, Table 1)," stated Tara Christie, President and CEO. “This very high-grade skarn-hosted mineralization (Figure 7) demonstrates the potential to discover and develop new mineralized zones at Powerline and AurMac in addition to high-grade domains associated with sheeted quartz veins (Figures 8 and 9). We are consistently intersecting visible gold as we are targeting high grade mineralized domains.”

Figure 1: Plan Map of AurMac show distribution of diamond drillholes. Magenta holes denote this release.

Figure 2: Plan map of Powerline Southwest with drill intersection highlights from this release. MRE blocks shown are all contained in the US$3,500/oz Au conceptual pit and at a cutoff of >0.3 g/t Au. Drillholes in this release highlight potential to extend and delineate new high-grade zones in the core of Powerline Southwest (Figures 3-6).

Figure 3: Cross-section 466150mE from Powerline Southwest at AurMac. Mineralized domains are overlaid on the lithologic model. The MRE block model is constrained by mineralized domains and the lithologic domains. Mineral Resource blocks are 10m x 10m x 5m. Only blocks >0.30 g/t Au cutoff and within the US$3,500/oz Au conceptual pit shell are included in the MRE.

Figure 4: Cross-section 466250mE from Powerline Southwest at AurMac. Mineralized domains are overlaid on the Figure 5: Cross-section 466450mE from Powerline Southwest at AurMac. Mineralized domains are overlaid on the Figure 6: Cross-section 466450mE from Powerline Southwest at AurMac. Mineralized domains are overlaid on the lithologic model. The MRE block model is constrained by mineralized domains and the lithologic domains. Mineral Resource blocks are 10m x 10m x 5m. Only blocks >0.30 g/t Au cutoff and within the US$3,500/oz Au conceptual pit shell are included in the MRE.

Figure 7: High-grade gold mineralization associated with replacement-style skarn mineralization. While sheeted quartz veins are the typical host for gold mineralization at Powerline, there is potential for mineralized skarn and calcareous metasedimentary units throughout Powerline and Airstrip.

Figure 8: Mineralized sheeted quartz veins in Powerline, typical of intrusion-related gold systems and the majority of Powerline style mineralization.

Figure 9: Visible gold intersected in the majority of drillholes. Examples from: top left – AX-26-829 386.0m; top right – AX-26-830 251.6m; bottom left AX-26-830 264.8m; bottom right AX-26-842 192.8m. Visible gold is often associated with bismuth sulphosalts or accessory arsenopyrite and rarely pyrite.

Table 1: Intervals from Powerline Southwest

AX-26-826 26.0 71.0 45.0 0.21 38.0 38.3 0.3 1.06 including 38.0 58.7 20.7 0.28 including 99.0 102.0 3.0 0.37 and 136.0 165.7 29.7 0.34 and including 136.0 147.8 11.8 0.63 184.7 214.0 29.3 0.47 and

194.0 214.0 20.0 0.65 including 199.6 209.0 9.4 0.99 including 202.0 202.4 0.4 17.30 including and 241.6 252.0 10.4 0.27 303.0 383.9 80.9 0.31 and 319.8 346.1 26.3 0.41 including 364.7 379.5 14.8 0.25 35.0 54.1 19.1 0.17 AX-26-829 194.4 209.2 14.8 0.14 229.0 241.5 12.5 0.19 and

285.0 323.6 38.6 0.90 and

including 285.0 307.7 22.7 1.44

296.0 307.7 11.7 2.51 and including 298.4 307.7 9.3 2.75 and including

298.4 298.9 0.5 39.80 385.2 397.0 11.8 0.94 and 385.2 386.2 1.0 9.82 including 24.4 25.7 1.3 0.73 AX-26-830 59.5 61.4 1.9 0.64 and 114.0 115.1 1.1 0.43 144.4 145.4 1.0 0.50 and 163.1 280.0 116.9 0.43 and 163.1 181.2 18.1 0.30 including 194.5 203.0 8.5 0.91 and including 176.5 181.2 4.7 0.80

221.4 278.2 56.8 0.67 and including 221.4 234.2 12.8 0.67 249.7 278.2 28.5 0.70 and including

17.6 60.3 42.7 0.26 AX-26-835 17.6 31.7 14.1 0.47 including 50.0 60.3 10.3 0.34 and including 189.8 197.8 8.0 1.29 and 197.1 197.8 0.7 11.21 including and 215.7 247.9 32.2 0.30 220.9 247.9 27.0 0.54 including 224.0 229.0 5.0 0.67 including 267.0 316.5 49.5 0.30 and 275.0 281.5 6.5 0.66 including 38.0 48.0 10.0 0.31 AX-26-842 90.5 103.0 12.5 0.20 and and 102.6 103.0 0.4 1.39 186.5 192.9 6.4 0.32 and 205.6 233.9 28.3 0.31 and 299.2 310.0 10.8 0.79 and 35.8 43.1 7.3 0.34 AX-26-843 144.6 152.5 7.9 0.32 and 188.9 218.1 29.2 0.24 and 237.8 273.5 35.7 0.38 and

147.5 154.2 6.7 0.25 and 178.2 295.0 116.8 0.44 178.2 202.7 24.5 0.72 including including 178.2 188.0 9.8 1.46 178.2 183.7 5.5 2.04 including 178.2 178.7 0.5 10.58 including 223.5 232.0 8.5 0.93 and including 225.5 232.0 6.5 0.94 257.0 259.9 2.9 2.76 and including 277.4 292.0 14.6 0.39 and including 76.6 93.0 16.4 0.24 AX-26-853 124.9 146.6 21.7 5.58 124.9 135.0 10.1 11.87 including 125.8 127.6 1.8 62.66 and including and 149.1 179.4 30.3 0.23 149.1 164.3 15.2 0.33 and including 230.8 263.1 32.3 0.70 and 250.5 263.1 12.6 1.55 259.2 263.1 3.9 3.98 including 259.2 261.0 1.8 6.80

Note: Calculated true widths are approx. 90% of drill intervals.

Table 2: Collars for diamond drill holes in this release

Analytical Method and Quality Assurance/Quality Control Measures

The reported work was completed using industry standard procedures, including a quality assurance/quality control (“QA/QC”) program consisting of the insertion of certified reference