GATEWAY MINING LIMITED — Investor Presentation 2021

Aug 31, 2021

==> picture [961 x 58] intentionally omitted <==

A CLEAR pathway to RESOURCE growth and DISCOVERY success

• Gidgee Gold Project – emerging high-grade gold camp

• • Update to current 240koz Resource in progress • Exploration accelerating across multiple new target areas

Investor Update | September 2021 | Mark Cossom, Managing Director

1

Important Notice and Disclaimer

==> picture [33 x 33] intentionally omitted <==

Forward Looking Statements

• This presentation has been prepared by Gateway Mining Ltd (GML). The information contained in this presentation is a professional opinion only and is given in good faith. Certain information in this document has been derived from third parties and through Gateway Mining has no reason to believe that it is not accurate, reliable or complete, it has not been independently audited or verified by GML.

• This presentation is in summary form and does not purport to be all inclusive or complete. Recipients should conduct their own investigations and perform their own analysis in order to satisfy themselves as to the accuracy and the completeness of the information, statements and opinions contained.

• This is for information purposes only. Neither this nor the information contained in it constitutes an offer, invitation, solicitation or recommendation in relation to the purchase or sale of GML shares in any jurisdiction. This does not constitute investment advice and has been prepared without taking into account the recipient’s investment objectives, financial circumstances or particular needs and the opinions and recommendations in this presentation are not intended to represent recommendations of particular investments to particular persons. Recipients should seek professional advice when deciding if an investment is appropriate. All securities transactions involve risks, which include (among others) the risk of adverse or unanticipated market, financial or political developments.

• To the fullest extent permitted by law, GML, its officers, employees, related bodies corporate, agents and advisors do not make any representations or warranty, express or implied, as to the currency, accuracy, reliability or completeness of any information, statements, opinions, estimated, forecasts or other representations contained in this presentation. No responsibility for any errors or omissions from this arising out of negligence or otherwise is accepted.

• Any forward looking statements included in this document involve subjective judgment and analysis and are subject to uncertainties, risks and contingencies, many of which are outside the control of, and may be unknown to, GML. In particular, they speak only as of the date of this document, they assume the success of GML’s strategies, and they are subject to significant regulatory business, competitive and economic uncertainties and risks. Actual events may vary materially from the forward-looking statements and the assumptions on which the forward-looking statements are based. Recipients of this document are cautioned to not place undue reliance on such forward-looking statements.

Competent Person Statement

• The information in this presentation that relates to Exploration Results and Mineral Resources has been extracted from various GML ASX announcements and are available to view on the GML website at www.gatewaymining.com.au or through the ASX website at www.asx.com.au (using ticker code “GML”)

• GML confirms that it is not aware of any new information or data that materially affects the information included in the original market announcement. The company confirms that the form and context in which the Competent Person’s findings are presented have not been materially modified from the original market announcement.

Exploration Targets Cautionary Statement

• This presentation may comment on and discuss Gateway Mining Limited’s exploration in terms of target size and type. The information relating to Exploration Targets should not be misunderstood or misconstrued as an estimate of Mineral Resources or Ore Reserves. The potential quantity and quality of material discussed as Exploration Targets is conceptual in nature since there has been insufficient work completed to define them as Mineral Resources or Ore Reserves. It is uncertain if further exploration work will result in the determination of a Mineral Resource or Ore Reserve.

• Any Exploration Targets referred to in this presentation are not Mineral Resources. The Potential quantity and grade of the Exploration targets are conceptual in nature and there has been insufficient exploration to determine a Mineral Resource. There is no certainty that additional exploration work will result in the estimation and reporting of Mineral Resources.

2

Building the next significant gold camp in WA’s Murchison

==> picture [33 x 33] intentionally omitted <==

TIER-1 LOCATION

IMPENDING RESOURCE GROWTH

STRONG EXPLORATION PIPELINE

SKILLED TEAM

==> picture [21 x 20] intentionally omitted <==

==> picture [21 x 21] intentionally omitted <==

==> picture [21 x 20] intentionally omitted <==

==> picture [21 x 20] intentionally omitted <==

▪ 1,000km[2] Gidgee Gold Project, 800km NE of Perth ▪ Upgrades to existing 240,000oz[1] Resources underway

• Maiden Resources due for Evermore and AchillesAirport (oxide)

• High-grade discoveries validating exploration strategy – “cracked the code”

• Focused programs over the coming 6-9 months on the next generation of targets

• ▪ Experienced and successful technical team with strong track record

==> picture [291 x 247] intentionally omitted <==

==> picture [286 x 180] intentionally omitted <==

1 3,425,000 tonnes @2.2g/t for 240,000 ounces of contained gold. See ASX announcement dated 3 October 2019.

3

==> picture [961 x 58] intentionally omitted <==

The opportunity in the region

4

old la in the Murchison District The emerging g p y

==> picture [33 x 33] intentionally omitted <==

Systematic approach to discovering and growing Resources within the Company’s single major project at Gidgee:

1. Extension of existing Resources from 1990’s oxide open pit mining:

• Montague-Boulder and Whistler – 240,000oz Inferred Resource to be extended and upgraded

2. Systematic, disciplined exploration leading to new discoveries:

• Evermore, Achilles North, Airport estimates in progress

3. Development of next generation of targets:

• Kashmir, Monarch

==> picture [452 x 340] intentionally omitted <==

4. Inorganic growth through identification of regional opportunities

Gateway Mining is aiming to systematically establish a significant gold Mineral Resource base in one of WA’s emerging goldfields…

5

Montague Granodiorite Dome – Classic WA Goldfields System

==> picture [33 x 33] intentionally omitted <==

• Analogous to several major gold camps in the WA goldfields:

▪ ~9km long major gold-rich shear zone along the western margin of the Granodiorite Dome

• Highly prospective Eastern Margin not explored – Howards/Kashmir

• Majority of previous drilling ineffective:

• Only 10% of drilling >50m depth

▪ Goal of defining a series of deposits to enable a critical mass for Project development

==> picture [582 x 415] intentionally omitted <==

6

==> picture [961 x 58] intentionally omitted <==

What has been our recent focus?

7

Current Work

==> picture [33 x 33] intentionally omitted <==

==> picture [653 x 466] intentionally omitted <==

8

Montague Resource Upgrade – Successful In-fill and Additions

==> picture [344 x 228] intentionally omitted <==

▪ Current 120,000oz Inferred Resource[1]

• Located on granted Mining Lease

• Approximately 5,000m of RC drilling completed since July 2020

▪ Exceptional results returned:

• GRC588: 6m @ 6.2g/t Au from 96m (HG Shoot)

• ▪ GRC591: 3m @ 9.0g/t Au from 62m (HG Shoot)

==> picture [344 x 234] intentionally omitted <==

• GRC625: 7m @ 4.6g/t Au from 112m (HG Shoot)

• GRC609: 5m @ 6.9g/t Au from 67m (~100m south of existing Resource)

• ▪ GRC599: 5m @ 17.4g/t Au from 83m (repeat below Resource)

• ▪ GRC583: 5m @ 2.7g/t Au from 115m (Granodiorite host)

• ▪ GRC696: 7m @ 3.0g/t Au from 84m (Granodiorite host)

▪ Resource re-estimation underway, targeting upgrade by Q4 2021

==> picture [33 x 33] intentionally omitted <==

1 1,700,000 tonnes at 2.23 g/t for 120,000 ounces. See ASX announcement dated 3 October 2019

9

New Resources – Evermore Discovery

==> picture [33 x 33] intentionally omitted <==

==> picture [371 x 470] intentionally omitted <==

▪ New high-grade discovery in October 2020

▪ Similar geology to Montague-Boulder

▪ ~11,200m of RC and diamond drilling completed since discovery

▪ High-grade mineralisation in multiple hosts: ▪ GRC550: 15m @ 3.0g/t Au from 104m and ▪ 10m @ 9.2g/t Au from 140m

▪ GRC630: 7m @ 11.7g/t Au from 97m ▪ GRC651: 12m @ 5.6g/t Au from 78m ▪ GRC566: 8m @ 3.0g/t Au from 92m (Montague Shear) ▪ GRC534: 6m @ 6.1g/t Au from 88m (Montague Shear)

▪ Maiden Resource estimate underway, targeting release in Q4 2021

10

New Resources – Achilles North

==> picture [355 x 468] intentionally omitted <==

▪ Oxide gold discovery made by Gateway in 2019

▪ Located on a granted Mining Lease

▪ Systematically RC drilled 400m along strike from Rosie pit

▪ Near surface, high-grade oxide results include:

▪ GRC507: 14m @ 1.0g/t Au from 3m

▪ GRC508: 7m @ 2.5g/t Au from 61m & 6m @ 1.5g/t Au from 45m ▪ GRC501: 4m @ 2.9g/t Au from 64m

▪ GRC446: 21m @ 2.1g/t Au from 32m

▪ GRC447: 13m @ 3.4g/t Au from 5m

▪ GRC430: 11m @ 3.0g/t Au from 32m

▪ Further RC drilling to extend north along strike

▪ Maiden Resource estimate underway, targeting release in Q4 2021

==> picture [33 x 33] intentionally omitted <==

11

New Resources – Airport

==> picture [33 x 33] intentionally omitted <==

• Shallow high-grade oxide discovery drilled by Gateway in 2002

• Flat-lying zone approximately 20-30m below surface

• Located on granted Mining Lease

• Near surface, high-grade oxide results include:

• GRB1231: 20m @ 15.6g/t Au from 25m

• GRC015: 17m @ 14.7g/t Au from 30m

• GRB1253: 15m @ 5.1g/t Au from 35m

• Potential fault offsets to north and south – RC drilling to test

• Maiden Resource estimate underway, targeting release in Q4 2021

==> picture [584 x 417] intentionally omitted <==

(See ASX announcement dated 4 November 2020)

12

▪ 22,000m air-core program recently completed

• Plymouth

• Achilles South

• Julias

• Samples submitted, assays pending

• Ground gravity survey – western tenement group

• Preparation for RC drilling:

• Evermore northern extension

• Achillles northern extensions

==> picture [33 x 33] intentionally omitted <==

Recent Field Activities

==> picture [584 x 417] intentionally omitted <==

13

==> picture [961 x 58] intentionally omitted <==

What’s next?

14

Upcoming Work

==> picture [33 x 33] intentionally omitted <==

==> picture [658 x 469] intentionally omitted <==

15

The Next Generation – Kashmir

==> picture [351 x 466] intentionally omitted <==

• Major 2.5km-long gold-in-soil anomaly defined by Gateway 2019-2020

• Directly along strike of 204koz Howards Resource (ASX : HRN)

• Located on unexplored Montague eastern margin

• First-pass wide-spaced RC testing in 2020 intersected high grade gold:

• GRC520: 2m @ 7.9g/t Au from 3m (mafic hosted)

• GRC524: 1m @ 8.8g/t Au from 59m (mafic hosted)

• GRC522: 2m @ 1.6g/t Au from 105m (granodiorite)

• Follow-up RC drilling planned for December Qtr 2020

• Potential to open up the entire 8km long eastern margin

Recent Horizon Gold (ASX : HRN) results*: 77m @ 1.1g/t Au from 64m 65m @ 1.2g/t Au from 0m 28m @ 1.5g/t Au from 102m

==> picture [33 x 33] intentionally omitted <==

*See HRN ASX announcement dated 30 August 2021

16

The Next Generation – Monarch

==> picture [33 x 33] intentionally omitted <==

==> picture [348 x 462] intentionally omitted <==

▪ Major gold-in-soil anomaly defined by Gateway over 5.8km strike

▪ Associated with significant historical workings

• Next to no previous exploration – 5 shallow (>50m) deep RC holes

in 1985

• Gateway surface rock ship sampling up to 18.7g/t Au

▪ In-fill soil sampling about to commence

• Aim to define an RC-drill ready target

17

12 Month Target Pipeline

==> picture [33 x 33] intentionally omitted <==

==> picture [345 x 469] intentionally omitted <==

----- Start of picture text -----

5 3
6
4
2
1
----- End of picture text -----

▪ 1 Woodley – Extensive alluvial gold workings, with soil anomaly

▪ 2 Season Well – Interpreted blind granodiorite intrusion

▪ 3 Whistler Nose – Continuation of Whistler mineralisation around

granodiorite nose

▪ 4 Rosie East – Extensive zones of granodiorite hosted gold

• mineralisation

▪ 5 Hot Diggety – Several historic RAB intercepts to be followed up

▪ 6 Barrelmaker – Several historic RAB intercepts to be followed up

18

==> picture [961 x 58] intentionally omitted <==

Overall strategy

19

Regional Opportunities

==> picture [33 x 33] intentionally omitted <==

▪ Gateway has demonstrated a willingness to be commercial

• Accumulated 1,000km[2] tenure through a series of deals

• Divested non-core projects and amassed ~$1.5m listed shares*

• “Middle” Murchison greenstones fragmented ownership

• Gateway has emerged as a major regional landholder

• Existing Mineral Resources and growth

• Opportunities for inorganic growth and regional consolidation

==> picture [456 x 343] intentionally omitted <==

==> picture [455 x 83] intentionally omitted <==

20

* As at 30 June 2021

Gidgee Pathway to Resource Growth

==> picture [33 x 33] intentionally omitted <==

==> picture [713 x 275] intentionally omitted <==

----- Start of picture text -----

TARGET DRILL RESOURCE MINERAL
GENERATION TESTING DEVELOPMENT RESOURCES
Woodley, Flametree,
Season Well, Monarch, Julias, Evermore,
Montague – Boulder,
Whistler Nose, Plymouth, Achilles North,
Whistler
Rosie East, Caledonian, Kashmir, Airport
Hot Diggety, Barrel Maker Whistler Deeps
DATA GENERATION VALUE ADDITION
----- End of picture text -----

21

==> picture [961 x 58] intentionally omitted <==

Summary

22

Cor orate Summar p y

CAPITAL STRUCTURE	CAPITAL STRUCTURE
ASX Ticker	GML
Shares on issue	1,903,635,600
Executive Performance Options	32,000,000
Cash balance as at 30 June 2021*	$3.57M
Share Price	$0.017
Market Capitalisation	$32.4M

==> picture [399 x 212] intentionally omitted <==

• Does not include listed investments as at 30 June 2021 of $1.49M

MAJOR SHAREHOLDERS

BOARD OF DIRECTORS

Harmanis Holdings	12.31%
OMNI GeoX	7.77%
L11 Capital	3.41%
Crest Investment Group	2.03%
Top 20	39.65%
Directors(Directly & Indirectly)	13.57%

Trent Franklin Non-Executive Chairman Mark Cossom Managing Director Debbie Fullarton Non-Executive Director Scott Brown Non-Executive Director Kar Chua Company Secretary

==> picture [33 x 33] intentionally omitted <==

23

Highly Successful and Experienced Leadership Team

==> picture [33 x 33] intentionally omitted <==

Mark Cossom Managing Director

Trent Franklin Non-Exec Chairman

Debbie Fullarton Non-Exec Director

Scott Brown Non-Exec Director

Kar Chua Company Secretary

Peter Langworthy Technical Consultant

• Executive Director since October 2019

• 24-year experienced geologist with a background in gold exploration, mine geology and corporate management

• Former General Manager - Geology & Exploration at Doray Minerals Ltd

• Former Principal Geologist (SE Asia) at Harmony Gold Ltd

• Experienced Corporate Advisor holding qualifications in Geology/Geophysics, Finance, Financial Planning and Insurance Broking

• Chartered Accountant with 25 years experience in various senior corporate and financial roles

• Currently Chief Executive Officer for Westgold Ltd

• Company Director with 25 years of broad experience in both the public and private sector

• Chartered Accountant with extensive experience in company secretarial & finance roles

• 34-year experienced explorer and project developer

• Led the highly successful exploration team at nickel producer Jubilee Mines

• 12 years of exploration and operational experience at WMC

• Former Executive Chairman at Gateway

• Former Technical Director at Talisman Mining Ltd

• Founding Director at Capricorn Metals Ltd

• Founding Director at Northern Star Resources Ltd

==> picture [190 x 443] intentionally omitted <==

24

Key Investment Takeways

==> picture [33 x 33] intentionally omitted <==

LOCATION ▪ Significant land-holder in a Tier-1 gold mining district

==> picture [21 x 20] intentionally omitted <==

• Existing 240,000oz[1] Inferred Mineral Resource around historic open pits

RESOURCES

• Resource upgrades pending in Q4 2021

==> picture [21 x 20] intentionally omitted <==

• Large gold system with clear potential for multiple sizeable deposits

• ▪ Exciting pipeline of exploration targets with work programs to commence

• ▪ Experienced and successful management team with strong track record

GROWTH

==> picture [21 x 21] intentionally omitted <==

SUCCESS

==> picture [319 x 416] intentionally omitted <==

25

13,425,000 tonnes @2.2g/t for 240,000 ounces of contained gold. See ASX announcement dated 3 October 2019.

==> picture [961 x 58] intentionally omitted <==

Thank you . Questions.

Investor Update | September 2021 | Mark Cossom, Managing Director

26