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SGU.V ·

Signature Resources Announces Findings from Spring Field Program

Exploration Programs

TS

XV-SGU OTCQB-SGGTF FSE-3S30

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

www.signatureresources.ca

Signature Resources Announces Findings from Spring Field Program

Toronto, Ontario, August 19, 2025, Signature Resources Ltd. (TSXV: SGU, OTCQB: SGGTF,

FSE: 3S30) ("Signature" or the "Company") is pleased to announce the results of the spring field

program conducted in May, 2025. The field program focused on five locations (Figure 1. 2025

Sampling Program Areas) within the defined Lingman Lake Gold Mine. These surface programs

continue to help delineate surface expressions of mineralization on the property. These

programs are very cost effective and beneficial for further developing our understanding of the

deposit and designing future exploration activity. The company collected 111 samples during

this program and nearly a quarter of the samples returned assay values of 0.10 grams per tonne

of gold ( “g/t Au”) or greater. Table 1, Sampling Results , provides sample locations and assay

results.

Figure 1. 2025 Sampling Program Areas

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

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Area 1

The program in Area 1 sampled the North Gold Zone immediately east of the north-south

trending diabase dike which bisects the Lingman Lake property. This work was following up on

the 2024 sampling program and to investigate a possible mineralized envelope between Central

Zone ‘B’ and North Zone ‘A’. A 14 metre (“m”) transect, adjacent to the eastern contact of the

dike, consisted of 13 channel cuts. The two most northerly samples returned gold values of 0.14

grams per tonne of gold (g/t Au) and 0.21 g/t Au and appear to be in the North Zone mineralized

envelope. A grab sample returned a value of 8.26 g/t Au. This sample was near the north edge

of the outcrop area and 1 m northeast of a 2024 channel sample that yielded a value of 11.52

g/t Au. The northern edge of this outcrop appears to delineate the southern edge of the North

Zone. In this area it appears to occupy a trough, marked by heavy vegetation and likely relates

to recessive weathering of the North Zone. The trough can be traced 600 m to the east and 400

m to the west and can be a useful topographic linear for prospecting.

Area 2

This area was selected to investigate the section between the South Zone and 11650 Zone

immediately east of the di ke. Seven channel samples were collected in the vicinity of old

trenches. Values were generally low, however channel samples of 0.8 m and 1.0 m in length

yield gold values of 0.24 g/t au and 0.54 g/t Au. 60 m northeast of where the channels were

collected, within the South Zone, three grab samples returned gold values of 0.67, 4.31 and 9.91

g/t Au in silicified mafic volcanics, see Area 2 Northeast.

Area 3

Located adjacent to the west contract of the diabase dike , Area 3 investigated the strike

projection of the South Zone west of the dike. In our 2024 drill program holes LM 24-09 and LM

24-10 intersected gold mineralization of 1.81 g/t Au over 51 m and 1.80 g/t Au over 34 m

respectively. In an attempt to locate the surface expression of these drill hole intercepts, outcrop

exposure in the general area was prospected and sampled. Much like the North Zone, actual

location of the South Zone appears to be located where the southern edge of the outcrop dives

into a recessively weathered trough suggesting that sulphide oxidation weathered down the

exposure. Channel samples were collected immediately north of the trough and returned low

gold values.

Area 4

Area 4 is located adjacent to the West contact of the transecting dike and was selected to follow-

up on a 2024 s ample that yielded 5.45 g/t Au as well as a small channel cut reporting 2.31 g/t

Au. Eleven channel samples were collected across a 4 m wide outcrop of which four returned

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values ranging from 0.11 to 1.63 g/t Au. This is a new target area warranting further work as it

is interpreted to represent a surface expression of the Central Zone “B”.

Area 5

This section of exposed outcrop lies 66 metres northeast of the shaft. Sampling efforts focused

on the space between Central Zone ‘A’ and Central Zone ‘B”, aiming to assess gold distribution

across the interzonal corridor. Outcrop is the typical mixture of mafic volcanic rocks which are

variably rusty and/or carbonatized with intercalated narrow quartz -feldspar porphyry (“QFP”) .

This large area is characterized by a complicated network of narrow QFP dikes and sills within

the mafic volcanic rocks. The QFP are often folded with fold noses plunging moderately to the

west. Two north- sough transects consisting of 42 individual samples, measuring between 0.5

and 1.0 metre in length were collected across a 33 m wide area. Of these, eight samples

returned gold grades ranging from 0.13 to 1.27 g/t Au. A detailed mapping and sampling

program is warranted for this area to work out the structural elements within the Lingman Lake

deposit.

Table 1. Sampling Results >0.10 g/t Au

Area Sample No Easting Northing Sample Type Length (m) Au ppm

1 507185.2 5968845.2 Channel 1.0 0.63

1 507183.3 5968844.7 Channel 0.6 0.35

1 507183.7 5968846.4 Channel 0.5 2.82

1 507172.5 5968839.0 Channel 1.1 0.14

1 507172.1 5968840.4 Channel 1.1 0.21

1 B00062906 507184.8 5968846.7 Grab n.a. 8.26

2 507145.0 5968675.6 Channel 0.8 0.24

2 507143.6 5968673.4 Channel 1.0 0.54

2 Northeast B00062961 507201.5 5968709.0 Grab n.a. 0.67

2 Northeast B00062962 507199.3 5968708.8 Grab n.a. 4.31

2 Northeast B00062963 507199.4 5968707.2 Grab n.a. 9.91

4 B00062941 507077.7 5968814.5 Channel 0.6 0.16

4 B00062943 507079.8 5968815.8 Channel 0.6 1.63

4 B00062945 507081.7 5968814.2 Channel 1.0 0.18

4 B00062946 507083.4 5968815.3 Grab n.a. 0.25

5 B00062456 507329.0 5968775.1 Channel 1.0 0.65

5 B00062465 507328.6 5968782.8 Channel 1.0 0.25

5 B00062466 507328.7 5968783.8 Channel 1.0 0.96

5 B00062468 507333.6 5968776.3 Channel 1.0 0.14

5 B00062475 507334.3 5968782.3 Channel 1.0 1.25

5 B00062478 507334.6 5968784.0 Channel 1.0 0.29

5 B00062483 507335.2 5968787.8 Channel 1.0 0.13

5 B00062497 507337.2 5968799.3 Channel 1.0 0.86

Notes:

n.a. not applicable

Coordinate Reference Sysyem (CRS): EPSG 3159, NAD 83 Zone 15N

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The field program was very successful in advancing our knowledge of the identified gold zones

within the Lingman Lake Gold Project. It is not surprising to have lower reported gold grades at

the surface, especially with the recessive nature of the weathered zones in Area 1 and Area 3.

Field work continues to add to the database providing refined surface placement of the zones

and their projections along strike. This has direct implications on drill hole placement and

geophysical tracing of the zones.

Amended Related Party Loan

The Company also announces that it has amended the loan agreement with a related party to

provide interim funding for general corporate activities dated January 2, 2025. The loan maturity

date has been extended to September 30, 2025 and loan amount increased to $350,000. The

funds are intended to support ongoing operations. The loan is provided on a non- cost basis to

the Company with no interest, finder’s fees or bonuses payable to the lender

The Company anticipates repaying the loan through future equity financings. The company

confirms that the loan agreement meets the exemption requirements and complies with TSXV

Policy 5.9 and MI61- 101. The transaction remains subject to the approval of the TSX Venture

Exchange.

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.

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 Red Lake lab for gold and the 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 a certified laboratory and also have internal quality control (“QC”) programs that include

insertion of reagent blanks, reference materials, and pulp duplicates. The Corporation inserts

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QC samples (blanks and reference materials) at regular intervals to monitor laboratory

performance.

About Signature Resources Ltd.

The Lingman Lake gold property (the "Property") consists of 1,274 single- cell and 13 multi-cell

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

approximately 24,821 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. 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 find out more about Signature, visit 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]

Tel: (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 Ven ture

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 uncertain ties.

Although these statements are based on information currently available to the Company, the Company provides no as surance 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

TSXV-SGU OTCQB-SGGTF FSE-3S30

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

such forward-looking information include, but are not limited to changes in general economic and financial market conditions, failure

to identify mineral resources, failure to convert esti mated mineral resources to reserves, the inability to complete a feasibility study

which recommends a production decision, the preliminary nature of metallurgical test results, delays in obt aining or failures to obtain

required governmental, environmental or other project approvals, political risks, inability to fulfill the duty to accommodat e First

Nations and other indigenous peoples, uncertainties relating to the availability and costs of financing needed in the future, changes in

equity markets, inflation, changes in exchange rates, fluctuations in commodity prices, delays in the development of projects , capital

and operating costs varying significantly from estimates and the other risks i nvolved in the mineral exploration and development

industry, and those risks set out in the Company’s public documents filed on SEDAR. Although the Company believes that the

assumptions and factors used in preparing the forward-looking information in this news release are reasonable, undue reliance should

not be placed on such information, which only applies as of the date of this news release, and no assurance can be given that such

events will occur in the disclosed time frames or at all. The Company disc laims any intention or obligation to update or revise any

forward-looking information, whether as a result of new information, future events or otherwise, other than as required by law.