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PRESS RELEASE

from Banyan Gold Corp. (CVE:BYN)

Banyan Provides Summary of 2025 Diamond Drill Program for the Flagship AurMac Project, Yukon, Canada

VANCOUVER, BC / ACCESS Newswire / May 14, 2026 / Banyan Gold Corp. (the "Company" or "Banyan") (TSXV:BYN)(OTCQB:BYAGF) is pleased to release the final drill results and provide a comprehensive summary of the 2025 AurMac delineation drill program. The 42,000 metres ("m") program included 178 drillholes at the AurMac Project, with the primary goal of the 2025 drill program to maximize economic potential for the upcoming Preliminary Economic Assessment ("PEA"; expected second half of 2026) by targeting high-grade domain and mineralized envelope extensions, and waste block conversion. Drilling took place from March 27, 2026, to November 10, 2026. Drill results throughout AurMac consistently intersected high-grade gold ("Au") mineralization, including well mineralized sheeted quartz vein domains hosting Bismuth-sulphosalts and visible gold throughout the core of the Powerline Deposit ("Powerline"). Very high-grade gold mineralization associated with sulphide replacement and skarn-style mineralization in the Airstrip Deposit ("Airstrip") were intersected in a core high-grade contact zone between calcareous metasedimentary rocks and a felsic aplite dyke. These findings follow up on drilling conducted in 2024 (see news release dated February 19, 2025).

Assay highlights from this release:

  • AX-25-692: 9.12 g/t Au over 1.5m within 0.78 g/t Au over 21.6m

AND 0.64 g.t Au over 15.6m

  • AX-25-743: 0.90 g/t Au over 13.3m within 0.51 g/t Au over 25.9m

  • AX-25-744: 2.59 g/t Au over 6.1m within 0.74 g/t Au over 26.3m

  • AX-25-760: 1.00 g/t Au over 4.0m AND 0.72 g/t Au over 11.4m all within 0.43 g/t Au over 58.4m

AND 6.56 g/t Au over 2.5m within 0.57 g/t Au over 42.3m

  • AX-25-776: 0.82 g.t Au over 6.6m within 0.47 g/t au over 14.2m

  • AX-25-790: 0.78 g/t Au over 16.8m within 0.5 g/t Au over 44.0m, including high grade of 17.34g/t Au over 0.4m

"We are looking forward to incorporating the 2025 drill results into our upcoming Mineral Resource Update and PEA, marking our first opportunity to speak about the economics of the AurMac Project," stated Tara Christie, President and Chief Executive Officer. "The PEA will focus on the gold potential, while ongoing drilling of the exciting silver intersections and metallurgical work throughout 2026 will further define the silver economics, potentially contributing to a future economic study."

"Banyan was able to take full advantage of an expanded drill program of over 42,000m to follow-up on high-grade zones intersected in 2024, while supporting the upcoming PEA through targeted drilling to convert in-pit waste blocks and expand high-grade domains identified with the new 3D model," stated Duncan Mackay, Vice President, Exploration. "Drilling through 2025 further expanded the AurMac deposits, showcasing the potential to connect the Airstrip and Powerline pits. We have identified areas where the conceptual pit may be flattened and extended at depth, demonstrating the open nature of mineralization, with 200-300m step outs hitting promising mineralization and visible gold in several directions. In an exciting new dimension, we have successfully followed up on bonanza-grade silver intersections in the core of Powerline and have identified at least eight discrete Keno-style silver veins across the deposits."

Figure 1: Plan map of the AurMac deposit including Airstrip and Powerline with drilling from 2025 (blue dots). Targets zones for 2025 drilling are denoted by coloured ellipses.
Figure 2: Grade x thickness heat map of the AurMac deposit with all diamond drilling to date. Sections with highlighted intervals are noted on the map.

Airstrip Deposit:

Consistent high-grade drill intersections through 2025 reinforce the continuity of gold mineralization associated with skarn-style sulphide replacement mineralization in Airstrip and the potential of this near-surface deposit. The first visible gold intersected in Airstrip is associated with skarn mineralization and is coincident with the highest-grade samples we have seen at this deposit (13.4 g/t Au over 5.94m, including 41.1 g/t Au over 0.97m). The potential of the high-grade contact zone in Airstrip is highlighted by samples in AX-25-650 returning results such as 51.2 g/t Au over 0.63m, 32.7 g/t Au over 0.55m and 41.1 g/t Au over 0.97m (see news release dated June 25, 2025). High-grade mineralization was also intersected in approximately 200m down-dip step-outs in Cal 1 and Cal 2 on the southern edge of Airstrip (Figure 3; AX-25-799 - 7.04 g/t Au over 6.0m within 0.68 g/t Au over 125.5m; see Banyan Gold News release dated February 8, 2026).

Figure 3: Cross-section 467000E of the Airstrip and Powerline deposits at AurMac. High-grade mineralization intersected in AX-25-799 and AX-25-807 in Airstrip represent large step-outs and down-dip extensions of the Cal 1 and Cal 2 zones (see news released dated February 8, 2026). Drilling in Central Powerline successfully extended high-grade mineralized domains at depth and supported continuity of domains and high-grade zones in the core of the deposit.
Figure 4: Calc-silicate alteration proximal to calcareous-metasedimentary rock and felsic dyke contact. See news releases dated April 30, 2025 and June 25, 2025.

Powerline Deposit:

Drilling in 2025 successfully intersected high-grade intervals associated with mineralized domains and sheeted-vein systems typical of Reduced Intrusion Related Gold deposits ("RIRGs") throughout the core of Powerline. With the improved 3D model for Powerline, mineralized domains can be more effectively targeted with opportunities to convert waste blocks; extend domains and flatten or deepen the conceptual pit floor; potentially extend high-grade portions of the main deposit at AurMac ; and support the upcoming PEA in the second half of 2026.

In Powerline, sheeted quartz-veins with visible gold, bismuth sulphosalts, and arsenopyrite are localized in higher concentrations in zones of more competent, brittle rocks. Veins are centimetre to decimetre in scale, generally with trace to 2% accessory minerals (bismuth sulphosalts and arsenopyrite). As rheology of the stratigraphy controls vein emplacement, detailed modelling is being carried out to refine the litho-structural model of the deposit and help define more refined mineralized domains. Many mineralized domains are open down-dip, with potential for more domains to be identified outside of the current mineralised envelope.

Continued drilling at Powerline has successfully confirmed mineralized domains in the core of Powerline (Figure 5), refined and extended mineralization between the Powerline and Airstrip main pits (Figure 3) and extended mineralization with potential to convert waste blocks in the southwest of Powerline.

Figure 5: Cross-section 466700. Drillholes AX-25-743, -692 and -790 extend and confirm continuity of high-grade domains in the core and northern portions of Powerline.

Gold mineralization in southwest Powerline is consistent with mineralization seen in the core of Powerline; gold mineralization is associated with discordant sheeted quartz veins hosting sulphosalts and sulphides (predominantly sphalerite, arsenopyrite), and is preferentially hosted in silicified/altered host rocks. Additional step-out drilling has intersected high-grade mineralization with potential to extend mineralized domains outside the conceptual pit boundary (Figure 6).

Figure 6: Cross-section 466100E in southwest Powerline. Drillholes AX-25-760 and -776 indicated potential for new mineralized domains intersected in step-out drilling. Coarse bismuth sulphosalts and visible gold have been intersected in the area which warrants further expansion/exploration drilling.

Silver Mineralization:

The identification of high-grade silver potential along extended strike lengths in central Powerline added a new dimension to the mineralization and metallogenic story for AurMac.

Highlights from 2025 (see news release dated January 22, 2026) confirming the very high-grade Keno-style silver mineralization in Powerline:

  • AX-25-803 - 5,625 g/t Ag over 3.4m within 1,841 g/t Ag over 10.4m, with very high-grade interval of 10,734 g/t Ag over 1.7m

  • AX-25-790 - 110.7 g/t Ag over 0.8m within 22.06 g/t Ag over 5.7m

  • AX-25-715 - 132 g/t Ag over 0.5m within 7.25 g/t Ag over 13.7m

Drillhole AX-25-803 was collared 90m away from 2021 Hole 142 and successfully intersected the vein pierce point 20m from Hole 142 at depth. Being able to successfully target this specific narrow, high-grade vein structure at depth is a technical success on top of the prospectivity for additional sub-parallel veins of silver mineralization which we are finding in the Ag-1 vein zone. Parallel veins intersected in both current and historic drilling further reinforce the scale and exploration potential of the targeted zone.

The high-grade Keno-style veins take advantage of steeply dipping, late brittle structures that strike northeast-southwest, cross-cutting the sheeted quartz veins that host gold mineralization (See Figure 7).

Figure 7: Plan map of new silver intersections in relation to high-grade silver zone in central Powerline (AX-21-142; see news release dated October 29, 2025).
Figure 8: Cross-section A-B in Powerline. Silver intersections within drillholes AX-25-803 are consistent with late brittle feature for the Ag-1 vein intersected in drillhole AX-21-142 (see news release dated October 29, 2025). Two sub-parallel veins have been identified (Ag-2 and Ag-3) north and south of the main Ag-1 vein.
Figure 9: High-grade Keno-style mineralization in drillhole AX-25-803 in Ag-1 Vein in Powerline. Silver mineralization is associated with semi-massive galena and sphalerite mineralization hosted within discrete Fe-carbonate ± quartz veins.

Table 1: Drill intervals for 2025 from AurMac

HOLE NUMBER

depth from

depth to

Au Interval (m)

Au Interval (g/t)

HOLE NUMBER

depth from

depth to

Au Interval (m)

Au Interval (g/t)

AX-25-638

13.7

14.9

1.2

0.40

AX-25-746

19.8

21.0

1.2

0.54

and

43.4

48.6

5.2

0.39

and

44.2

45.7

1.5

0.34

AX-25-640

18.6

27.1

8.5

0.31

and

116.8

126.5

9.7

0.30

and

46.0

59.0

13.0

0.72

and

145.6

202.0

56.4

0.38

including

53.6

59.0

5.4

1.25

including

164.6

178.2

13.6

0.66

and

92.5

104.7

12.2

0.29

and including

188.5

200.8

12.3

0.52

AX-25-641

91.0

92.3

1.3

0.30

including

200.2

200.8

0.6

3.94

and

204.9

206.0

1.1

1.35

and

220.0

259.5

39.5

0.56

and

219.5

221.0

1.5

0.57

including

224.5

243.3

18.8

0.92

and

248.0

256.5

8.5

0.18

including

229.0

234.7

5.7

1.70

AX-25-642

6.1

7.6

1.5

0.88

and

302.0

310.2

8.2

0.34

and

30.5

31.9

1.4

0.60

including

303.3

303.8

0.5

1.67

and

54.3

60.2

5.9

1.11

AX-25-747

56.8

63.4

6.6

0.57

and

88.0

89.6

1.6

0.52

including

61.9

63.4

1.5

1.70

and

111.9

113.2

1.3

0.34

and

86.0

101.4

15.4

0.61

AX-25-643

7.7

26.8

19.1

0.99

including

92.9

94.2

1.3

4.66

including

23.0

26.8

3.8

4.34

and

112.5

114.2

1.7

0.89

including

25.0

26.8

1.8

8.24

and

142.3

213.6

71.3

0.50

and

56.4

57.6

1.2

0.34

including

142.3

143.2

0.9

3.38

and

58.9

60.1

1.2

0.30

and including

161.5

162.6

1.1

1.54

and

64.0

64.3

0.3

0.42

and including

189.0

212.2

23.2

0.83

and

65.5

68.2

2.7

0.38

including

191.2

194.6

3.4

3.25

and

93.5

95.0

1.5

0.40

and including

211.2

212.2

1.0

4.75

and

99.5

100.9

1.4

0.45

and

234.7

236.7

2.0

0.30

AX-25-644

8.8

59.0

50.2

0.36

AX-25-748

14.4

42.0

27.6

0.35

including

20.7

29.3

8.6

0.37

including

30.3

31.7

1.4

2.42

and including

42.4

49.7

7.3

0.91

and

55.3

56.8

1.5

0.35

and

75.5

77.0

1.5

0.51

and

58.3

59.6

1.3

0.30

and

142.9

143.8

0.9

0.34

and

72.8

74.3

1.5

0.35

AX-25-646

5.6

7.0

1.4

0.40

and

91.4

93.8

2.4

2.07

and

18.8

20.3

1.5

0.40

including

91.4

91.9

0.5

5.84

and

26.7

28.3

1.6

0.38

and including

92.5

93.8

1.3

1.31

and

33.0

34.6

1.6

0.53

and

128.0

172.0

44.0

0.43

and

238.2

239.3

1.1

0.85

including

129.5

130.4

0.9

1.92

AX-25-647

39.2

40.7

1.5

0.53

and including

144.0

147.1

3.1

1.26

and

112.0

114.0

2.0

1.14

and

188.4

277.5

89.1

0.30

and

140.0

141.5

1.5

0.90

including

188.4

188.9

0.5

3.41

and

190.5

196.4

5.9

0.12

and including

227.6

228.7

1.1

2.06

AX-25-648

98.5

100.6

2.1

0.62

and including

247.8

260.0

12.2

0.65

and

130.0

131.2

1.2

0.34

and

307.0

309.0

2.0

0.38

and

163.3

170.8

7.5

0.53

and

331.0

339.0

Gold Mineralization AurMac Project Drill Program Banyan Gold Corp. Silver Intersections
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