Sitka Drills 121.0 Metres of 0.75 g/t Gold and 26.0 Metres of 1.28 g/t Gold Within 249.9 Metres of 0.58 g/t Gold, Significantly Expanding Mineralization Beyond the Current Resource Boundary at Its Eiger Deposit, RC Gold Project, Yukon

NEWS RELEASE

December 02, 2025 NR 25-30

www.sitkagoldcorp.com

SITKA DRILLS 121.0 METRES OF 0.75 G/T GOLD AND 26.0 METRES OF 1.28 G/T GOLD WITHIN 249.9 METRES OF 0.58 G/T GOLD, SIGNIFICANTLY EXPANDING MINERALIZATION BEYOND THE CURRENT RESOURCE BOUNDARY AT ITS EIGER DEPOSIT, RC GOLD PROJECT, YUKON

• Step out drilling at Eiger continues to return broad intervals of significant gold mineralization beyond the current Mineral Resource Estimate (“MRE”) boundary at the Eiger deposit, which remains open in all directions
• Drill hole DDRCCC-25-109 intersected 121.0 m of 0.75 g/t Au and 26.0 m of 1.28 g/t Au within 249.9 m of 0.58 g/t Au, further expanding the Eiger Deposit
• Recent results suggest a higher-grade component to the Eiger deposit is emerging at depth which is a characteristic of the more advanced Blackjack deposit located approximately 1.5 km to the west
• Drilling continues to define a robust gold system within the Blackjack - Saddle - Eiger extensional corridor where recently released assay results returned 44.4 m of 1.33 g/t Au at the Saddle target, approximately 1,000 m to the west of Eiger
• Additional results pending for 38 drill holes, including 26 holes from the new Rhosgobel discovery and the remainder from Pukelman, Contact, Bearpaw, and May- Qu.

VANCOUVER, CANADA – December 02, 2025: Sitka Gold Corp. (“Sitka” or the “Company”) (TSX-V:SIG) (FSE:1RF) (OTCQB:SITKF) is pleased to announce additional analytical results from drilling completed at its 100% owned, road accessible RC Gold Project (“RC Gold” or the “Project”) located within the Yukon’s prolific Tombstone Gold Belt. Drilling at the Eiger gold deposit has expanded the mineralized envelope beyond the current MRE boundary, with drill hole DDRCCC-25-109 intersecting 121.0 m of 0.75 g/t gold and 26.0 m of 1.28 g/t gold within 249.9 m of 0.58 g/t gold from 325.0 m outside of the current MRE. Analytical results are currently pending for 38 drill holes at RC Gold, including 26 from the new Rhosgobel discovery and the remainder from Pukelman, Contact, Bearpaw, and May-Qu.

Table 1: Gold assay highlights for this release (see Table 2 for details)

*Intervals are drilled core length, as insufficient drilling has been completed at this time to determine true widths.

“Drilling continues to outline a large, robust gold system at Eiger, which remains open in all directions, while expanding the mineralized footprint beyond the current deposit model,” stated Cor Coe, CEO and Director of Sitka Gold. “This year marked the first follow up drilling completed at Eiger since the initial MRE, based on just 13 drill holes, was published in 2021. Strong gold intercepts such as the 121.0 metres of 0.75 g/t gold and 26.0 metres of 1.28 g/t gold within 249.9 metres of 0.58 g/t gold in hole 109, which included, which was intercepted 325 metres beyond the current MRE boundary, underscore the potential to add significant ounces to the Eiger deposit where a higher-grade component appears to be developing. As additional drilling is completed, our understanding of the controls of mineralization at Eiger continue to evolve in a similar way as it did at the neighbouring Blackjack deposit where much more drilling has delineated a substantial, higher-grade resource. There is still plenty of untapped potential at Eiger and we anticipate ramping up drilling efforts there as part of next year’s expanded exploration program with up to 60,000 metres of drilling planned.

“Eiger is just one of multiple intrusion-related gold deposit targets within the broader Clear Creek Intrusive Complex where the robust scale and continuity of gold mineralization across this district-scale land package is becoming increasingly evident. As assays continue to be received, we look forward to releasing additional pending results from the many other target areas that were drilled at RC Gold this year, including Pukelman, Contact, Rhosgobel, Bearpaw and May-Qu.”

Figure 1: A plan map of the Eiger deposit showing the location of 2025 drilling. Step out drilling completed in 2025 has significantly expanded known gold mineralization beyond the current MRE boundary.

Figure 2: A cross section of the Eiger Deposit showing the location of DDRCCC-25-109 which returned 121.0 metres of 0.75 g/t gold and 26.0 metres of 1.28 g/t gold within 249.9 metres of 0.58 g/t gold, intercepted 325 metres beyond the current MRE boundary. These results underscore the potential to add significant ounces to the Eiger deposit and suggest a higher- grade component appears to be developing at depth.

Figure 3: A 3D cross section of the Eiger Deposit showing the location of new drilling with respect to the current mineral resource estimation block model. The Eiger deposit remains open in all directions and results from this news release have significantly expanded mineralization beyond the current MRE boundary. Results such as the 121.0 m of 0.75 g/t Au from 248.0 m and 26.0 m of 1.28 g/t Au from 325.0 m intercepted in DDRCCC-25-109 also suggest a higher-grade component to the deposit could be emerging at depth, which is a characteristic of the more advanced Blackjack deposit located 1.5 km to the west.

Figure 4: Plan map of the Blackjack-Saddle-Eiger extensional corridor (dashed line) where large gold-in-soil anomalies have been found to strongly correlate with in-situ gold mineralization.

Figure 5: Examples of visible gold (VG) observed in drill core at the Eiger Deposit. Click the following link to see additional images of VG from the EIGER zone.

Figure 6: Core from DDRCCC-25-109 of sheeted quartz veins in diorite showing part of the 26.0 m interval of 1.28 g/t Au, including 2.0 m of 7.09 g/t Au from 337.0 m.

Eiger Deposit

Drilling at the Eiger in 2025, which included 10 holes for 4,401 meters, was successful in extending the known mineralization at the Eiger deposit. Drilling intersected reduced intrusion-related gold style mineralization including centimetre scale quartz veins with visible gold often associated with bismuthinite, arsenopyrite, and occasionally scheelite and extended mineralization to the east, west, and down dip. The current mineral resource estimation at Eiger is 440,000 ounces of gold in 27,362,000 tonnes grading 0.50 g/t gold in an inferred category. Recently completed drilling at Eiger, including the 121.0 m of 0.75 g/t Au from 248.0 m and 26.0 m of 1.28 g/t Au from 325.0 m intercepted in DDRCCC-25-109, suggest a higher-grade component to the deposit could be emerging at depth, which is a characteristic of the more advanced Blackjack deposit located 1.5 km to the west. The Eiger deposit remains open in all directions.

Previous mapping by US Geological Survey and the Yukon Geological Survey (Marsh et al, 1998, Marsh et al, 1999) has demonstrated that the gold mineralization identified at the Blackjack Deposit, the Saddle Zone and the Blackjack deposit occurs within a 1 km by > 4 km extensional corridor (Figure 4). Such corridors can create structural conditions favourable for the emplacement of intrusive rocks and associated gold mineralization.

• While visible gold observations are very encouraging and confirm the presence of gold mineralization, they are not intended to imply potential gold

grades. Gold assays will be published after they are received from the lab for mineralized intervals in which visible gold particles were noted.

Table 2: Summary of significant assay results from this release

*Intervals are drilled core length, as insufficient drilling has been completed at this time to determine true widths.

Figure 7: A plan map of the Clear Creek Intrusive Complex (CCIC) showing the updated resource areas at Blackjack and Eiger, along with the newly discovered Rhosgoble zone and several other high-priority drill targets and multiple exploration targets. . The map highlights the numerous drill targets that Sitka has outlined within the CCIC which all are connected by the road network on the project and occur in an area measuring five (5) km north-south and twelve (12) km east-west. Additional areas highlighted by strong gold in soil anomalies are being advanced to the drill ready stage with additional geological work in 2025.