Sitka Drills 235.9 Metres of 1.11 G/T GOLD from Surface, Including 40.0 Metres of 2.01 G/T GOLD and 10.0 Metres of 5.29 G/T GOLD, Further Confirming a Near-Surface Higher-Grade GOLD Zone at Its Rhosgobel Discovery, Rc GOLD

NEWS RELEASE

September 18, 2025

NR 25-23

www.sitkagoldcorp.com

SITKA DRILLS 235.9 METRES OF 1.11 G/T GOLD FROM

SURFACE, INCLUDING 40.0 METRES OF 2.01 G/T GOLD

AND 10.0 METRES OF 5.29 G/T GOLD, FURTHER

CONFIRMING A NEAR-SURFACE HIGHER-GRADE GOLD

ZONE AT ITS RHOSGOBEL DISCOVERY, RC GOLD

PROJECT, YUKON

● DDRCRG-25-010 returned 235.9 m of 1.11 g/t gold, including 40.0 m of 2.01 g/t gold

and 10.0 m of 5.29 g/t gold, from surface; the best intercept to date from Rhosgobel

● DDRCRG-25-009 returned 118.0 m of 1.09 g/t gold, including 14.0 m of 3.34 g/t gold,

from surface

● Drill results to date confirm continuity of near-surface, higher-grade gold

mineralization which remains open in all directions laterally and at depth

● First 10 diamond drill holes completed to date at Rhosgobel have all returned

intercepts of > 100 g*m of gold

● Assays pending for an additional 32 diamond drill holes completed at Rhosgobel

across a strike length of approximately 1.2 km

● Numerous instances of visible gold identified in 26 of the remaining 32 drill holes at

Rhosgobel

● Significant intercepts of tungsten associated with gold mineralization discovered at

Rhosgoebel, including 75.50 m of 0.13 2% WO3, 6.98 m of 0.388% WO 3 and 0.61 m of

4.739% WO3

● A total of 91 diamond drill holes have now been completed at RC Gold this year

targeting the Blackjack, Saddle, Eiger, Pukelman, Contact, Rhosgobel, Bear Paw and

May-Q targets

● Approximately 32,000 metres completed of a planned 30,000 metre drill program

with results still pending for 62 drill holes

VANCOUVER, CANADA – September 18, 2025: Sitka Gold Corp. (“Sitka” or the

“Company”) (TSX-V:SIG) (FSE:1RF) (OTCQB:SITKF) is pleased to announce additional

analytical results for diamond drill holes completed at the Rhosgobel intrusion target located

at its 100% owned, road accessible RC Gold Project (“RC Gold” or the “Project”) within the

Yukon’s prolific Tombstone Gold Belt. Results from drill holes RCRG25 -009 and 010 have

now been received and confirm the consistency of this newly discovered mineralized system

where assays from all 10 diamond drill holes completed to date in this area have returned

>100 g*m (g/t Au*m) intercepts over a strike length of approximately 300 metres, and where

hole 010 reported in this news release returned a 262.6 g*m intercept. DDRCRG-25-010

returned the best intercept to date from Rhosgobel, with 235.9 m of 1.11 g/t gold, including

40.0 m of 2.01 g/t gold and 10.0 m of 5.29 g/t gold , from surface. DDRCRG -25-009 also

returned impressive results with an intercept of 118.0 m of 1.09 g/t gold, including 14.0 m of

3.34 g/t gold, also from surface (see Tables 1 and 2). To date a total of 42 drill holes have

been completed in 2025 on this newly discovered Rhosgobel area stretching for over 1.2 kms

in length. Numerous instances of visible gold have also been identified in 26 of the remaining

32 diamond drill holes completed at Rhosgobel with assays pending (see Figures 2 and 5).

The Company is also pleased to announce that it requested and has subsequently received

analytical results for tungsten from DDRCRG -24-002 that indicates the potential for

significant tungsten mineralization at the Rhosgobel target, with intercepts of up to 75.50

m of 0.13 2% WO3, 6.98 m of 0.388% WO 3 and 0.61 m of 4.739 % WO3 (see Table 3 and

Figure 6).

Assays are also pending for an additional 30 diamond drill holes that have been completed

across the Blackjack, Saddle, Eiger, Pukelman, Contact, Bear Paw and MayQu targets.

Approximately 32,000 metres of diamond drilling has been completed across the RC G old

Project this year.

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

Hole ID Zone From (m) To (m)* Length (m) Gold (g/t)

DDRCRG-25-010 Rhosgobel 5.0 240.9 235.9 1.11

including 61.0 101.0 40.0 2.01

including 208.0 218.0 10.0 5.29

DDRCRG-25-009 Rhosgobel 5.4 124.0 118.6 1.09

including 33.0 47.0 14.0 3.34

including 67.8 69.6 1.8 6.32

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

"These latest results confirm the continuity of strong gold values within this newly discovered

high-grade mineralized gold zone at Rhosgobel", stated Cor Coe, CEO and Director of Sitka.

"Our technical team has done an incredible job bringing this new discovery at Rhosgobel from

an initial two diamond drill holes completed late last year to an impressive 42 drill holes

totalling over 12,000 metres across a strike length of 1.2 km in just a few short months. While

the exceptional, near -surface gold values fr om Rhosgobel continue to impress, the newly

identified tungsten mineralization discovered in this system adds a very compelling

component to this target. Given the potential significance that tungsten could have as a by -

product of future gold production, w e have implemented additional analytical procedures to

assay for tungsten at Rhosgobel. With mineralization open in all directions and plenty of room

to continue expanding with the drill bit across the 2 km x 1.5 km target area, we believe

Rhosgobel has the potential to become our new flagship deposit at RC Gold. We have much

to look forward to as we await the remaining drill results still pending for 32 additional holes

at Rhosgobel, along with 30 drill holes still pending across the Blackjack, Saddle, Eiger,

Pukelman, Contact, Bear Paw and MayQu targets.”

Figure 1: A cross section showing the intercepts of 235.9 m of 1.11 g/t Au, including 40.0 m of

2.01 g/t Au and 10.0 m of 5.29 g/t Au in DDRCRG-25-010 and 118.6 m of 1.09 g/t Au, including

14.0 m of 3.34 g/t Au, in DDRCRG-25-009.

Figure 2: A plan map of the Rhosgobel Intrusion target showing the drilling completed to date

in 2025. All holes have intersected reduced intrusion -related gold system (RIRGS) style

mineralization including centimetre -scale, sheeted, quartz veins and larger, metre -scale

quartz, and quartz -tourmaline veins (and breccias) cutting t he feldspar megacrystic quartz

monzonite intrusion. Multiple occurrences of visible gold have been observed in most of the

diamond drill holes completed to date (yellow stars). Note: logging of holes 40 and 42 are

currently in progress.

Figure 3: A plan map of the broader Rhosgobel Intrusion target area that is supported by a

large 2.0 km x 1.5 km gold-in-soil anomaly which covers the central part of the intrusion. While

drilling to date has only been focused on the core of this target area, geochemical results

from soil sampling have been shown to strongly c orrelate with in situ gold mineralization at

Rhosgobel.

Figure 4: An example of drill core from DDRCRG -25-010 showing quartz veins and

tourmaline veinlets and tourmaline breccia cutting weakly altered, feldspar megacrystic

quartz monzonite of the Rhosgobel intrusion. The displayed section shows most of the 13.2

m interval from 69.1 m containing 4.16 g/t Au.

RHOSGOBEL DRILLING

To date, 43 holes totalling approximately 12,722 m have been completed at Rhosgobel. All

holes drilled have intersected significant reduced intrusion -related gold (RIRGS) style

mineralization including centimetre -scale, sheeted, quartz veins and larger, me tre-scale

quartz, and quartz -tourmaline veins (and breccias) cutting the feldspar megacrystic quartz

monzonite intrusion. Visible gold has been observed within all styles of veins and is often

associated with bismuthinite, scheelite, and molybdenite (see F igure 4). Drilling to date has

traced mineralization over a strike length of approximately 1.1 kilometres within a large 2.0

km x 1.5 km surface signature represented by a gold-in-soil anomaly with values up to >500

ppb (Figure 3). Gold mineralization at Rhosgobel begins at surface, extends to a depth of

over 400 metres and remains open in all directions. The first ten diamond drill holes, including

the two discovery holes drilled in 2024, have all intersected >100 gram -metres gold (g/t

Au*m).

* While visible gold observations are very encouraging and confirm the presence of gold mineralization, they are not intended t o imply potential gold

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

Table 2: Summary of significant assay results from this release

Hole ID Length (m) Azimuth (°) Dip (°) From (m) To (m) Interval (m)* Gold (g/t)

DDRCRG-25-010 241.0 25 -80 5.0 240.5 235.9 1.11

Including 34.0 36.0 2.0 8.36

Including 61.0 101.0 40.0 2.01

Including 69.1 82.2 13.2 4.16

Including 208.0 218.0 10.0 5.29

Including 212.0 214.1 2.1 14.00

DDRCRG-25-009 214.9 25 -50 5.4 181.0 175.6 0.79

Including 5.4 124.0 118.6 1.09

Including 12.0 27.0 15.0 1.78

Including 33.0 47.0 14.0 3.34

Including 67.8 69.6 1.8 6.32

Including 79.8 80.9 1.1 8.60

Including 96.0 98.0 2.0 1.05

Including 122.0 124.0 2.0 1.21

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

TUNGSTEN AT RHOSGOBEL

Drill hole DDRCRG -24-002, which intersected 173.3 metres of 0.60 g/t gold from 97.0

metres, including 28.4 metres of 1.40 g/t gold from 105.0 metres, and 12.4 metres of 2.40

g/t gold from 121.0 metres (see news release dated November 25, 2024) was submitted to

ALS Laboratories for WO 3 analysis via XRF pressed pellet with a Lithium Borate fusion on

pulp material.