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SIG.V ·

Intersection of 166.0 Metres of 1.14 G/T GOLD, Including 8.0 Metres

Drill Results

NEWS

RELEASE

August

12,

2025

NR

25-19

www.sitkagoldcorp.com

SITKA

GROWS

RHOSGOBEL

DISCOVERY

WITH

INTERSECTION

OF

166.0

METRES

OF

1.14

G/T

GOLD,

INCLUDING

8.0

METRES

OF

4.86

G/T

GOLD,

FROM

SURFACE

AT

ITS

RC

GOLD

PROJECT,

YUKON

●

Mineralized

footprint

of

the

Rhosgobel

discovery

rapidly

expanding

with

visible

gold

observed

in

16

of

22

drill

holes

completed

over

an

approximately

900

metre

strike

extent

of

the

2.0

km

x

1.5

km

gold-in-soil

anomaly

●

Results

received

from

the

first

6

diamond

drill

holes

ever

completed

at

Rhosgobel

have

all

returned

>100

gram-metres

(g/t*m)

of

gold

●

DDRCRG-25-006

intersected

166.0

m

of

1.14

g/t

Au,

including

8.0

m

of

4.86

g/t

Au,

from

surface

●

DDRCRG-25-004

intersected

239.9

m

of

0.60

g/t

Au

from

surface,

including

20.0

m

of

1.02

g/t

Au

from

surface,

18.0

m

of

1.36

g/t

Au

from

100m

and

14.1

m

of

1.06

g/t

Au

from

138.8

m

●

22,677

m

in

62

holes

completed

to

date

at

RC

Gold

in

2025

with

four

diamond

drills

currently

active

on

the

Project;

assay

results

currently

pending

for

48

holes

VANCOUVER,

CANADA

–

August

12,

2025:

Sitka

Gold

Corp.

(“Sitka”

or

the

“Company”)

(TSX-V:SIG)

(FSE:1RF)

(OTCQB:SITKF)

is

pleased

to

announce

additional

positive

assay

results

from

the

Rhosgobel

discovery

at

its

100%

owned,

road

accessible

RC

Gold

Project

located

in

the

Yukon’s

prolific

Tombstone

Gold

Belt.

The

mineralized

footprint

of

the

Rhosgobel

discovery

is

rapidly

expanding

with

visible

gold

observed

in

16

of

the

22

holes

drilled

to

date

over

approximately

900

m

etres

of

strike

length

within

the

2.0

km

x

1.5

km

target

outline

represented

by

the

>500

ppb

gold-in-soil

anomaly

(see

Figure

3).

To

date,

results

for

just

six

of

the

22

diamond

drill

holes

completed

at

Rhosgobel

have

been

received

with

all

six

holes

returning

>100

gram-metres

(gold

grade

x

length)

intervals,

including

holes

004

and

006

in

this

release

(see

news

releases

dated

November

25,

2024

and

August

5,

2025).

To

date

6,438

of

the

planned

10,000

metres

of

drilling

have

been

completed

at

the

Rhosgobel

discovery

as

part

of

the

30,000

metre,

fully

funded

diamond

drill

program

currently

underway

at

RC

Gold.

Assay

results

are

currently

pendin

g

for

48

holes.

Table

1:

Assay

highlights

for

this

release

(see

Table

2

for

details)

Hole

ID

Zone

From

(m)

to

(m)*

Length

(m)

Gold

(g/t)

DDRCRG-25-006 Rhosgobel 3.1 169.0 166.0 1.14 Including 13.0 21.0 8.0 4.86 DDRCRG-25-004 Rhosgobel 3.1 243.0 239.9 0.6 Including 3.1 23.1 20.0 1.02 and 100.0 118.0 18.0 1.36 and 138.9 152.9 14.1 1.06

*Intervals

are

drilled

core

length,

as

insufficient

drilling

has

been

completed

at

this

time

to

determine

true

widths.

"Drilling

at

Rhosgobel,

which

is

the

largest

intrusion

within

the

Clear

Creek

Intrusive

Complex,

continues

to

confirm

that

we

have

made

a

very

significant

gold

discovery,”

said

Cor

Coe,

Director

and

CEO

of

Sitka

Gold.

“We

are

still

at

an

early

stage

of

drilling

at

Rhosgobel

yet

we

already

have

multiple

occurrences

of

visible

gold

observed

in

several

drill

holes

that

are

located

along

a

900

metre

strike

of

the

interpreted

zone,

with

the

first

six

diamond

drill

holes

ever

drilled

on

this

target

all

returning

intersections

that

are

greater

than

100

gram-meters

(g/t*m)

of

gold.

The

potential

for

the

Rhosgobel

intrusion

to

host

a

large,

multi-million

ounce

gold

deposit

similar

to

other

known

deposits

in

the

Tombstone

Gold

belt

is

becoming

more

evident

with

these

recent

resu

lts.

The

gold

endowment

of

the

RC

Gold

Project

is

growing

rapidly,

driven

by

our

latest

discovery

at

Rhosgobel

alongside

our

known

deposits

at

Blackjack

and

Eiger,

which

both

remain

open

for

expansion.

With

advanced

drill

targets

at

Saddle,

Pukelman-Contact,

and

the

Bear

Paw

Breccia,

plus

a

strong

pipeline

of

additional

targets

and

grassroots

potential

across

our

431-square-kilometre,

road-accessible

claim

block,

the

potential

for

further

resource

growth

at

RC

Gold

is

significant."

Figure

1

:

A

cross

section

of

holes

DDRCRG-25-003

and

004.

Analytical

results

show

strong

gold

values

intersected

in

hole

004

with

an

average

of

1.02

g/t

gold

over

20.1m

starting

from

the

surface

within

the

broader

interval

grading

0.6

g/t

gold

over

238.0

m

from

surface.

Figure

2

:

A

cross

section

of

holes

DDRCRG-25-005,

006

and

011

showing

>1

g/t

gold

mineralization

starting

from

surface.

All

holes

intersected

similar

mineralization

with

highlight

assays

displayed

for

Hole

006

returning

1.14

g/t

gold

over

166.0

m

including

8.0

m

of

4.86

g/t

gold

from

surface.

Figure

3:

A

plan

map

of

the

Rhosgobel

Intrusion

showing

the

2025

drilling.

The

drilling

is

targeted

based

on

previous

shallow

reverse-circulation

drilling

conducted

in

1995

which

had

not

been

followed

up

on

until

Sitka’s

initial

diamond

drill

discovery

holes

completed

in

2024.

The

target

is

supported

by

a

large

2.0

km

x

1.5

km

gold-in-soil

anomaly

which

covers

the

central

part

of

the

intrusion.

All

holes

have

intersected

reduced

intrusion-related

gold

(RIRGS)

style

mineralization

including

centimetre-scale,

sheeted,

quartz

veins

and

larger,

metre-scale

quartz,

and

quartz-tourmaline

veins

(and

breccias)

cutting

the

feldspar

megacrystic

quartz

monzonite

intrusion.

Multiple

occurrences

of

visible

gold

have

been

observed

in

several

of

the

diamond

drill

holes

completed

to

date

(yellow

stars).

Figure

4

:

Examples

of

visible

gold

(VG)

observed

in

DDRCRG-25-004,

006,

008

and

018

at

the

Rhosgobel

target.

Multiple

occurrences

of

visible

gold

(VG)

have

been

observed

in

the

drill

core

at

Rhosgobel,

with

VG

encountered

in

16

of

the

22

holes

completed

to

date.

Bismuthinite,

scheelite

and

molybdenite

are

also

visible

in

the

examples

above

and

are

associated

wit

h

VG

in

many

instances.

Click

HERE

to

view

additional

images

of

VG

observed

in

Rhosgobel

drill

core.

Figure

5:

An

example

of

drill

core

from

DDRCRG-25-006

showing

part

of

the

interval

of

8.0

m

of

4.86

g/t

Au

starting

at

13.0

m

downhole

within

the

broader

interval

of

166.0

m

of

1.14

g/t

Au

from

surface

.

The

interval

is

hosted

within

altered

and

oxidized

megacrystic

quartz

monzanite.

RHOSGOBEL

DRILLING

To

date,

22

holes

totalling

approximately

6,438

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,

metre-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

Figure

4).

Drilling

to

date

has

traced

mineralization

over

a

strike

length

of

approximately

900

metres

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).

The

mineralization

at

Rhosgobel

remains

open

in

all

directions.

The

first

six

diamond

drill

holes,

including

the

two

discovery

holes

drilled

in

2024,

have

all

intersected

>100

gram-metres

gold

(g/t

Au*m).

DDRCRG-25-006

returned

166.0

m

of

1.14

g/t

gold

from

surface

including

8.0

m

of

4.86

g/t

gold

from

13.0

m.

Assays

from

DDRCRG-25-004

returned

238.0m

of

0.6

g/t

gold

from

surface,

including

20.1

m

of

1.02

g/t

gold

from

surface,

18.9

m

of

1.36

g/t

gold

from

100m

and

14.1

m

of

1.06

g/t

gold

from

138.8

m.

Holes

004

and

006

were

drilled

from

the

same

locations

as

Holes

003

and

005

on

sections

(see

Figures

1

and

2)

approximately

50

and

100m

along

strike

from

discovery

holes

001

and

002

which

returned

164.8

metres

of

0.82

g/t

gold

from

9.1

metres

including

119.0

metres

of

1.05

g/t

gold

from

30.0

metres

and

173.3

metres

of

0.6

g/t

gold

from

97.0

metres

including

28.4

m

of

1.37

g/t

gold

from

105.0

metres

respectively

(see

news

release

dated

November

25,

2024)

.

*

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

Hole

ID

Zone

Length

(m)

Azimuth

(°)

Dip

(°)

From

(m)

To

(m)

Interval

(m)*

Gold

(g/t)

DDRCRG-25-006 Rhosgobel 396.2 25 -80 3.1 169.0 166.0 1.14 Including 13.0 21.0 8.0 4.86 Including 69.0 87.0 18.0 1.91

Including 106.0 113.0 7.0 3.16 Including 135.0 136.6 1.6 13.00 And 221.0 223.0 2.0 1.08 And 235.5 237.0 1.5 1.32 DDRCRG-25-004 Rhosgobel 382.5 25 -70 3.1 243.0 239.9 0.60 Including 3.1 23.1 20.1 1.02 Including 100.0 118.0 18.0 1.36 Including 138.9 152.9 14.1 1.06 And 163.0 183.0 20.0 0.54 And 188.5 194.0 5.5 0.45 And 207.1 315.2 108.1 0.51 Including 207.1 243.0 35.9 0.96 Including 207.1 213.6 6.5 2.48 Including 226.0 228.0 2.0 2.19 Including 233.3 241.0 7.7 1.11 And 260.0 262.1 2.1 3.18 And 313.0 315.2 2.2 1.01

*Intervals

are

drilled

core

length,

as

insufficient

drilling

has

been

completed

at

this

time

to

determine

true

widths