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Signature Resources Announces Final Drill Results and Commencement of Prospecting Field Program on Regional Claims

Drill Results Exploration Programs

TSXV-SGU OTCQB-SGGTF FSE-3S30

66 Wellington Street West, Suite 4100, TORONTO, ONTARIO M5K 1B7

www.signatureresources.ca

Signature Resources Announces Final Drill Results and Commencement of

Prospecting Field Program on Regional Claims

Toronto, Ontario, August 10, 2026 — Signature Resources Ltd. (TSXV: SGU, OTCQB: SGGTF , FSE:

3S30) ("Signature" or the "Company") is pleased to announce results from the final three diamond drill

holes ("DDHs") in the 2025-26 drill program, which tested the western extension of the Lingman Lake

deposit. All three DDHs intersected the structural zones predicted by the Company’s geological model

and all three contained gold.

The winter drill program, shown in Figure 1, consisted of nine holes totaling 4,006 metres (“m”) and was

completed in early May. The program was designed as a significant step-out exploration program to test

the deposit at depth east of the diabase dyke and the strike extension of the gold zones west of the dike

The results are significant because they support continuity of structure, mineralization at depth, validate

the current geological model, and help define priority targets for future drilling designed to expand the

Lingman Lake mineralized envelope.

Figure 1: Plan view of drill program.

TSXV-SGU OTCQB-SGGTF FSE-3S30

66 Wellington Street West, Suite 4100, TORONTO, ONTARIO M5K 1B7

www.signatureresources.ca

We believe this program has increased our understanding of the mineralization of

this deposit and highlighted a large undrilled area that could significantly expand the

resource at the Lingman Lake Gold Deposit. It has also improved targeting for future

drill programs and provided guidance for prospecting work. Surface work has

already begun with a number of surface samples showing the potential of the 32 -

kilometre greenstone belt.

J. Dan Denbow, CFA – President, CEO and Director

Results of drilling west of diabase dike

The Company drilled three DDHs west of the dike to explore the lateral extension of the West and Central

gold zones, as shown in Figure 1. Each zone was intercepted as predicted by the geological model, with

the DDHs shown in Figure 2. These targets were developed using a 3D Alpha IP survey that indicated a

strong correlation between high chargeability and low resistivity. While the structures were intercepted

and the core appeared visually prospective, the mineralization intercepted was generally anomalous but

low grade.

Figure 2: Section showing drill traces for LM 25-06, LM 25-07 and LM 25-08

LM 25-061 was drilled to a total depth of 200 m on the same section as LM 25-07. Based on core

observations the Central Gold Zone (“CZ”) was intercepted very near surface beginning at 11 metres and

1 LM25-06 was drilled at an azimuth 359.9 degrees, dip -44.5 degrees, reported widths are drill intercepts (core lengths),

computer modeling of true widths is pending, North Zone strikes at 093 degrees, Central Zone strikes at 087 degrees, South

Zone strikes at 082 degrees, All zones dip steeply south 70-80 degrees.

TSXV-SGU OTCQB-SGGTF FSE-3S30

66 Wellington Street West, Suite 4100, TORONTO, ONTARIO M5K 1B7

www.signatureresources.ca

occurs as two distinct zones, the CZ-A and CZ- B, which combined occur for 16 metres ending at 27 m

for an average grade of .11 grams per tonne of gold (“g/t Au”). This included a one-metre intercept from

16 m to 17 m grading 1.10 g/t Au in the CZ-A zone and one metre in CZ-B from 23 m to 24 m grading

0.22 g/t Au. This hole intercepted the leopard rock (typical footwall unit of the northly zones) at 132 m

and it continued for the remainder of the hole which is a wider than normal.

LM 25-072 was drilled to a total depth of 371 metres to test the heart of the anomaly identified in the IP

study and first encountered the CZ-A at 95 m continuing to 107 m as observed in the core. The average

grade for the 12 m intercept is 0.07 g/t Au, including a one-metre intercept at 102 metres grading 0.25

g/t Au. CZ-B was observed beginning at 130 m continuing for seven metres with an average grade of

0.10 g/t Au including one metre intercepts grading 0.21 g/t at 130 m and 0.34 g/t Au at 132 m. The West

zone began at 250 m for 30 m with an average grade of 0.06 g/t Au. This included a three-metre section

from 267 m to 270 m with an average grade of 0.27 g/t Au. The footwall was intercepted at 333 m.

LM 25-083 was drilled to a depth of 410 m at a dip of -55.3 degrees. A short intersection of the Central

zone occurred at 164 m for three metres with an average grade of 0.17 g/t Au. The West zone was

encountered at 277 m for 16 metres with an average grade of 0.07 g/t Au including three metres with an

average grade of 0.20 g/t Au. The footwall was intercepted at 349 m.

Conclusions from the 2025-2026 Drill Program

There are a number of key observations that we take away from the most recent exploration program

which has contributed to expanding our knowledge of the Lingman Lake Deposit. All of these

observations will serve to underpin our future drilling plans and other geophysical or geochemical studies

that we can complete to help targeting for higher grade mineralization.

• Structural controls remain consistent. All the DDHs in this program have confirmed the

geologic model with structural deformation and alteration holding up across the Lingman Lake

Deposit.

• Structure is not the only control. Structure has been very consistent and appeared to be the

predictor of grade but drilling further from the original workings demonstrate the correlation of

higher grade in proximity to the quartz feldspar porphyry (“QFP”) east of the diabase dike. QFP

has not been observed in the drill core west of the dike where higher grade has been reported.

• Types of deformation appear key to grade. Areas that exhibit of brittle-ductile deformation

along the deposit show variable grades versus areas combined with silica flooding show higher

grades.

2 LM 25-07 was drilled at an azimuth of 360 degrees at a dip of -59.1 degrees. Reported widths are drill intercepts (core

lengths), computer modeling of true widths is pending, North Zone strikes at 093 degrees, Central Zone strikes at 087

degrees, South Zone strikes at 082 degrees, All zones dip steeply south 70-80 degrees

3 LM 25-08 was drilled at an azimuth of 11.36 degrees at a dip of -55.3 degrees. Reported widths are drill intercepts (core

lengths), computer modeling of true widths is pending, North Zone strikes at 093 degrees, Central Zone strikes at 087

degrees, South Zone strikes at 082 degrees, All zones dip steeply south 70-80 degrees

TSXV-SGU OTCQB-SGGTF FSE-3S30

66 Wellington Street West, Suite 4100, TORONTO, ONTARIO M5K 1B7

www.signatureresources.ca

• Signals from Molybdenite. Trace molybdenite mineralization which is hosted by quartz veining

along the deposit’s footwall implies a high temperature fluid and thermal input from granitoid

intrusions to the mineralization event. This suggests a fluid overprint onto the shear system from

the QFP resulting in areas of higher-grade gold mineralization.

• Significant targets identified at depth. The program has identified a westerly plunge to the

deposit opening a large untested area. Target Areas A and D seen in Figure 3 on both sides of

the dike that can extend the resource significantly at depth. In addition, a largely undrilled area,

Target Area B, which is above the identified deeper targets could also be quite additive to the

resource. Figure 4 shows a cross section of the target area and exhibits the depth of this new

area compared to the historic drilling on the property.

Figure 3: Opportunities to Infill at Depth – Longitudinal Section

TSXV-SGU OTCQB-SGGTF FSE-3S30

66 Wellington Street West, Suite 4100, TORONTO, ONTARIO M5K 1B7

www.signatureresources.ca

Figure 4 – Cross Section View Highlighting Target Area A

Prospecting Program on the Regional Claims

Signature maintains a very large land package covering 85% of the Lingman Lake Greenstone belt. The

Company has begun a 30-day prospecting program that will investigating an area 15 km to west of the

Lingman Lake deposit. Prior airborne geophysical surveys that we have completed have been overlayed

with historical results from prospecting work mostly completed in the 1960’s and 1970’s with a small

amount from the early 1980’s, which point to this being a highly prospective area. Historical records are

very high-level but our compilation efforts document a number of base metal and gold showings aligned

in a curvilinear trend south mirroring the regional-scale contact between Lingman Greenstone Belt and

granites.

This area is being referred to as Area 5 for this work program. There are records of past sampling, shallow

blast trenching and even some small diameter (21.5 and 30.1 mm) drilling that we have been able to

incorporate in our database. We will be targeting to work around the areas of historical activity and their

relationship to structures as currently interpreted from airborne geophysical surveys. The program

consists of initial mapping, prospecting and sampling to confirm and provide context for historical results

and to select areas for follow-up work. Figure 5 shows the area that this program will be covering and the

location of some of the noted historical activities.

TSXV-SGU OTCQB-SGGTF FSE-3S30

66 Wellington Street West, Suite 4100, TORONTO, ONTARIO M5K 1B7

www.signatureresources.ca

Figure 5 – Mapping-Prospecting-Sampling Program on Area 5.

Emerging Growth Conference Presentation

The Company will be presenting at the Emerging Growth Conference, August 19, 2026 at 1:45 pm

Eastern. We will provide an update on the recent exploration activities for Signature and answer any

questions on the recent work and the ongoing field program. You can register for the presentation here.

Qualified Person

The scientific and technical content of this press release have been reviewed and approved by Mr. Walter

Hanych, P. Geo, consultant and Head Geologist, is a Qualified Persons under NI 43-101 regulations.

TSXV-SGU OTCQB-SGGTF FSE-3S30

66 Wellington Street West, Suite 4100, TORONTO, ONTARIO M5K 1B7

www.signatureresources.ca

Quality Assurance and Quality Control

Signature Resources maintains an industry standard Quality Assurance/Quality Control (QA/QC)

program at the Lingman Lake Project to ensure sampling and analysis of all exploration work is conducted

in accordance with best practices. John Siriunas, P. Eng. is the independent Qualified Person under 43-

101 who monitors and scrutinizes the results of the QA/QC program.

Assay results from SGS’s Burnaby lab for gold and multi -element are directly e-mailed to three

individuals: Dan Denbow, President and CEO of Signature Resources, Walter Hanych, P. Geo.

consultant to the Company, and John Siriunas, P. Eng. independent consultant to the company.

SGS is a certified laboratory and also has internal quality control (“QC”) programs that include insertion

of reagent blanks, reference materials, and pulp duplicates. The Corporation inserts QC samples (blanks

and reference materials) at regular intervals to monitor laboratory performance. SGS Canada is the

Canadian division of the world's leading testing, inspection, and certification company. It provides

independent testing and assurance of quality of samples for Signature Resources Ltd.

The nominal sampling interval for analyses is one (1) metre and the core was diamond-saw cut (half for

sample purposes, half retained for archival purposes) on site to provide a sample of approximately 2.40

kilograms of material per one metre of half NQ-size core. Prior to sampling, all cores are photographed

for archival purposes in sets of three boxes per photo with separate wet and dry versions of each set.

The SGS laboratories carry out the sample login/registration, sample weighing and sample preparation

(G_CRU21 – crush to 75% passing 2 millimetres and G_PUL45 – pulverize 250 grams using Cr-steel

bowl to 85% passing 75 micrometres). Gold analyses were performed by (GE_FAA313 – fire assay pre-

concentration with AAS finish or for over limit results of >10.000 g Au/t, GE_FAG303 – fire assay pre-

concentration with a gravimetric finish). The SGS laboratory in Vancouver, British Columbia performed

multi-element analyses for 51 elements (GE_ICM14B – aqua regia digestion with an ICP-AES or -MS

finish). Over limit analyses for Ag (GO_ICP13B - aqua regia digestion with an ICP-AES finish) and As or

Zn (GO_ICP90Q – sodium peroxide fusion with an ICP-AES finish) were performed as required.

SGS Red Lake, Val-d’Or and Vancouver are accredited for CAN-P-1579 Requirements for Accreditation

of Mineral Analysis T esting Laboratories and CAN-P-4E (ISO 17025: 2005) General Requirements for

the Competence of T esting and Calibration Laboratories. SGS Red Lake is accredited for three tests: Au

by fire assay (GE_FAA_313 and GO_FAA_303) and Au by gravimetrics (GO_FAG_303). SGS Vancouver

is accredited for 13 tests including multi-elements by aqua regia (GE_ICM14B).

About Signature Resources Ltd.

The Company is a Canadian based advanced stage exploration company focused on expanding the

100% owned Lingman Lake gold deposit, located within the prolific Red Lake district in Northwestern

Ontario, Canada. The Lingman Lake gold property (the "Property") consists of 25 single-cell and 159

multi-cell staked claims, four freehold fully patented claims and 14 mineral rights patented claims totaling

TSXV-SGU OTCQB-SGGTF FSE-3S30

66 Wellington Street West, Suite 4100, TORONTO, ONTARIO M5K 1B7

www.signatureresources.ca

approximately 23,033 hectares. The Property includes what has historically been referred to as the

Lingman Lake Gold Mine, an underground substructure consisting of a 126.5-metre shaft, and 3-levels

at depths of 46 metres, 84 metres and 122 metres. There has been over 43,222 metres of drilling done

on the Property and four 500-pound bulk samples that averaged 19 grams per tonne of gold. The

Company’s initial mineral resource estimate was published in the report entitled “NI 43-101 Technical

Report on the Lingman Lake Property” dated May 31, 2025 prepared by Gehard Kiessling, P. Geo.,

Farshid Ghazanfari, P. Geo., Marin Drennan, P. Eng., Cameron Finlayson and Jeff Plate,CFA, P. Geo,

of Watts, Griffis and McOuat Geological & Mining Consultants. The initial published mineral resource

was estimated to contained 2.145 million tonnes of material grading 1.38 g/t Au for an estimated 95,200

ounces in the indicated category and 18.398 million tonnes of material with an average grade of 1.14 g/t

Au for an estimated 674,320 ounces in the inferred category at a cutoff grade of 0.30 g/t. The Company

is focused on rapidly expanding the known mineralized envelope with its 100% owned diamond drilling

rigs. In November 2023, Wataynikaneyap Power energized a new 115kV high tension transmission line

within 40 km of the historic Lingman Lake Mine (https://www.wataypower.ca/).

To f i n d o u t m o r e a b o u t S i g n a t u r e , v i s i t www.signatureresources.ca or contact:

Dan Denbow

Chief Executive Officer

(800) 259-0150

[email protected]

or contact :

Renmark Financial Communications Inc.

John Boidman: [email protected]

T el: (416) 644-2020 or (212) 812-7680

www.renmarkfinancial.com

Cautionary Notes

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture

Exchange) accepts responsibility for the adequacy or accuracy of this news release.

This news release contains forward-looking statements which are not statements of historical fact. Forward -looking statements

include estimates and statements that describe the Company’s future plans, objectives or goals, including words to the effect that the

Company or management expects a stated condition or result to occur. Forward-looking statements may be identified by such terms

as “believes”, “anticipates”, “expects”, “estimates”, “may”, “could”, “would”, “will”, or “plan”. Since forward-looking statements are

based on assumptions and address future events and conditions, by their very nature they involve inherent risks and uncertainties.

Although these statements are based on information currently available to the Company, the Company provides no assurance that

actual results will meet management’s expectations. Risks, uncertainties and other factors involved with forward-looking information

could cause actual events, results, performance, prospects and opportunities to differ materially from those expressed or implied by

such forward-looking information. Forward-looking information in this news release includes, but is not limited to, the Company’s

objectives, goals or future plans, statements, exploration results, potential mineralization, the estim ation of mineral resources,

exploration and mine development plans, timing of the commencement of operations and estimates of market conditions and risks

associated with infectious diseases and global geopolitical events. Factors that could cause actual results to differ materially from