GATEWAY MINING LIMITED — Investor Presentation 2022

May 1, 2022

1

==> picture [153 x 213] intentionally omitted <==

==> picture [394 x 541] intentionally omitted <==

Delivering a step-change in resource growth from new discoveries in 2022

• Gidgee Gold Project

• North Murchison, WA

RIU Sydney Resources Round-up | May 2022 Mark Cossom, Managing Director

Important Information and Disclaimer Forward Looking Statements 2

• 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.

Building a Substantial Gold Inventory in the North Murchison 3

==> picture [119 x 329] intentionally omitted <==

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

TIER-1 LOCATION
ROBUST
RESOURCE
GROWTH
RECENT
DISCOVERY
SUCCESS
MAJOR
DRILLING
COMMITMENT
SKILLED TEAM
----- End of picture text -----

==> picture [31 x 31] intentionally omitted <==

▪ 1,000km[2] Gidgee Gold Project, 800km NE of Perth

▪ Mineral Resource base totalling 449,000oz (Indicated and Inferred[1] ) ▪ 87% growth in 2021, with more to come

==> picture [31 x 30] intentionally omitted <==

==> picture [31 x 30] intentionally omitted <==

▪ Three new shallow discoveries in 12 months – all within 5km radius ▪ All completely new areas, identified from systematic targeting

==> picture [31 x 31] intentionally omitted <==

▪ Over 60,000m of air-core, RC and diamond drilling planned for 2022 ▪ Well-funded with ~$5.2m in cash and $2.0m in listed equities

==> picture [31 x 31] intentionally omitted <==

▪ Experienced and successful technical team with strong track record

==> picture [241 x 416] intentionally omitted <==

1 8,165,000 tonnes @1.7g/t for 449,000 ounces of contained gold. See ASX announcement dated 14 December 2021.

Corporate Summary 4

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

CAPITAL STRUCTURE
ASX Ticker		GML
Shares on issue1		2,260,106,367
Executive Performance Options		41,000,000
Cash balance as at 31 Mar 2022		$5.22M
Listed Investments as at 31 Mar 2022*		$2.06M
Share Price		$0.013
Market Capitalisation		$29.4M
Enterprise Value		$22.1M

MAJOR SHAREHOLDERS
Harmanis Holdings		12.29%
OMNI GeoX		6.68%
L11 Capital		3.40%
Enable Investment		2.17%
Top 20		38.51%
Directors(Directly & Indirectly)		12.60 %

116,798,363 shares in DiscovEx Resources Ltd (ASX: DCX ) 20,000,000 shares in Strickland Metals Ltd (ASX: STK )

*Includes:

Highly Successful and Experienced Leadership Team ▪ Executive Director since October 2019 5 ▪ Mark Cossom 24-year experienced geologist with a background in gold exploration, mine geology and corporate management ▪ Managing Director Former General Manager - Geology & Exploration at Doray Minerals Ltd

• 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

• ▪ Managing Director of Enrizen Financial Group

• ▪ Former Director of the Australian Olympic Committee Inc. and Australian Water Polo Inc.

Trent Franklin Non-Exec Chairman

Debbie Fullarton Non-Exec Director

• Chartered Accountant with +30 years experience in various senior corporate and financial roles

• ▪ Currently Chief Executive Officer for Westgold Ltd

Scott Brown Non-Exec Director Kar Chua Company Secretary

• 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

• +35-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

Peter Langworthy Technical Consultant

• 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 [139 x 399] intentionally omitted <==

==> picture [961 x 541] intentionally omitted <==

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

Tier 1 Location
6
----- End of picture text -----

Robust Resource Growth Moving to the next level 7

▪ 87% increase in Mineral Resource to 449koz[1]

• Resources located predominantly within upper 100m – shallow, high-grade ounces

• Includes high-grade Indicated Resource of 81,000oz at 3.4g/t[2]

• Includes maiden Resources for Evermore (67koz) and Achilles North/Airport (99koz)

• Substantial scope for further growth

==> picture [521 x 487] intentionally omitted <==

1 8,165,000 tonnes @1.7g/t for 449,000 ounces of contained gold. See ASX announcement dated 14 December 2021. 2 743,000 tonnes @ 3.4g/t for 81,000 ounces of contained gold. See ASX announcement dated 14 December 2021.

Montague Resource Robust Indicated and Inferred Base 8

▪ 163,000oz Mineral Resource

▪ Includes high-grade 67,000oz @ 4.0g/t Au Indicated[1]

• Located on granted Mining Lease

• Preliminary metallurgical test work indicates free-milling characteristics[2]

• Further potential for growth within the granodiorite:

▪ GRC583: 5m @ 2.7g/t Au from 115m (Granodiorite host) ▪ GRC696: 7m @ 3.0g/t Au from 84m (Granodiorite host)

• 1 522,000t @ 4.0g/t for 67,000oz Indicated; 1,556,000t @ 1.2g/t for 96,000oz Inferred. See ASX announcement dated 14 December 2021 2 See ASX Release dated 28 April 2021

==> picture [484 x 511] intentionally omitted <==

New Resources – Evermore Discovery Emerging shallow discovery with substantial upside 9

==> picture [416 x 397] intentionally omitted <==

▪ New high-grade discovery in October 2020

▪ Maiden Inferred Mineral Resource 67,000oz[1]

▪ Similar geology to Montague-Boulder

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

▪ Recent RC drilling has opened up the northern strike extensions

▪ Drilling within the granodiorite “nose” toward Whistler:

▪ GRC717: 21m @ 1.7g/t Au from 132m including 2m @ 9.3g/t Au

▪ Drilling along strike of the main Evermore structure:

▪ GRC718: 8m @ 1.8g/t Au from 42m

1 1,319,000t @ 1.6g/t for 67,000oz Inferred. See ASX announcement dated 14 December 2021

New Resources – Achilles/Airport Extensive oxide gold zone – still open 10

▪ Oxide gold discovery made by Gateway in 2019

▪ Shallow 99,000oz Resource, including 221,000t @ 2.0g/t for 14,000oz Indicated[1]

• Located on granted Mining Lease

▪ Systematically RC drilled 500m along strike from Rosie pit

• Near surface, high-grade oxide results include:

• GRC507: 14m @ 1.0g/t Au from 3m

• GRC733: 11m @ 1.1g/t Au from 2m & 10m @ 1.2g/t Au from 43m

• ▪ GRC735: 5m @ 3.0g/t Au from 107m

• GRC508: 7m @ 2.5g/t Au from 61m & 6m @ 1.5g/t Au from 45m

• GRC446: 21m @ 2.1g/t Au from 32m

• GRC447: 13m @ 3.4g/t Au from 5m

▪ GRC430: 11m @ 3.0g/t Au from 32m

1 221,000t @ 2.0g/t for 14,000oz Indicated, 1,847,000t @ 1.4g/t for 85,000oz Inferred. See ASX announcement dated 14 December 2021

==> picture [368 x 516] intentionally omitted <==

Three New Shallow Discoveries In the past 12 Months 11

==> picture [282 x 358] intentionally omitted <==

Julias An emerging large-scale oxide gold discovery 12

• Shallow, oxide gold trend first drilled by Gateway in 2008

• Located on a granted Mining lease

• Recent RC results confirm solid mineralisation:

▪ GRC762: 11m @ 2.6g/t Au from 24m ▪ GRC763: 10m @ 3.0g/t Au from 38m, and 12m @ 2.4g/t Au from 60m ▪ GRC761: 9m @ 3.5g/t Au from 67m ▪ GRC758: 9m @ 3.4g/t Au from 55m

▪ Significant widths of oxide gold mineralisation intersected over 800m south: ▪ GWAC0965: 24m @ 1.4g/t Au from 16m ▪ GWAC0961: 8m @ 1.3g/t Au from 32m ▪ GWAC0957: 4m @ 1.4g/t Au from 16m

• Indications mineralisation joins with Flametree target to south

• Julias trend completely open to north-east

• Extensional air-core drilling complete and in-fill RC drilling complete

• Results pending

==> picture [367 x 515] intentionally omitted <==

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

12
----- End of picture text -----

Kashmir 2.5km long emerging discovery 13

• 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

• Recent RC testing has confirmed the continuation of shallow gold mineralisation:

▪ GRC764: 15m @ 1.0g/t Au from 15m ▪ GRC766: 5m @ 1.7g/t Au from 36m ▪ GRC770: 3m @ 3.2g/t Au from 7m ▪ GRC520: 2m @ 7.9g/t Au from 3m ▪ GRC524: 1m @ 8.8g/t Au from 59m

• Additional step-out RC drilling complete, results pending

• 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 [370 x 521] intentionally omitted <==

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

13
----- End of picture text -----

Monarch 5.8km long gold trend to be drilled in 2022 14

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

▪ Associated with significant historical workings

• Next to no previous exploration – five shallow (>50m) deep RC holes in 1985

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

• First-pass RC drilling in progress

• Air-core drilling to extend anomaly south under creek system

==> picture [391 x 517] intentionally omitted <==

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

14
----- End of picture text -----

The Big Picture 15

Over 60,000m Of drilling planned for 2022 16

▪ Combination of air-core, RC and diamond

▪ AC along Julias strike extensions complete – results pending

• RC drilling at Julias and Kashmir complete – results pending

▪ RC drilling at Monarch in progress

• Rolling ongoing programs across other key targets within 5km radius

• Next Mineral Resource upgrade scheduled for early Q3 2022

==> picture [520 x 486] intentionally omitted <==

Building our Pipeline Multiple target areas across the broader package 17

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

==> picture [403 x 503] intentionally omitted <==

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

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

Summary 18

Key Investment Takeaways 19

LOCATION ▪ Focused gold explorer in a Tier-1 district FOCUSED ON ▪ Over 60,000m of drilling planned in 2022 to expand the current RESOURCE 449koz Resource[1] GROWTH SHALLOW ▪ Large gold system with clear potential for multiple sizeable OUNCES, shallow deposits BIG SYSTEM SUCCESS ▪ Experienced and successful management team with strong track record

==> picture [213 x 280] intentionally omitted <==

1 8,165,000 tonnes @1.7g/t for 449,000 ounces of contained gold. See ASX announcement dated 14 December 2021.

19

20

==> picture [153 x 213] intentionally omitted <==

==> picture [394 x 541] intentionally omitted <==

Thank You

• Questions

RIU Sydney Resources Round-up | May 2022 Mark Cossom, Managing Director