GATEWAY MINING LIMITED — Investor Presentation 2023

Jun 12, 2023

1

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

Gearing up for our next leg of growth

Montague Gold Project North Murchison, WA

Corporate Update | June 2023 Mark Cossom, Managing Director

Important Information and Disclaimer

2

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.

Building a Significant Gold Company in the North Murchison 3

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

▪ 1,000km[2] Montague Gold Project, 800km NE of Perth ▪ Project Mineral Resource totaling 526,000oz (Indicated and Inferred[1] )[2] ▪ Part of a significant gold endowed system – large-scale targets ▪ Three new deposits discovered in two years ▪ Oxide Gold - Over 70% of Resources within 100m of surface

TIER-1 LOCATION

==> picture [119 x 312] intentionally omitted <==

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

ROBUST
RESOURCE
RECENT
EXPLORATION
SUCCESS
MAJOR
DISCOVERY
FOCUS
CORPORATE
STRENGTH
----- End of picture text -----

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

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

▪ Conceptual targeting complete – soils complete ▪ 2-dimensional seismic survey complete ▪ Exploration push on step-change discoveries

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

▪ Experienced and successful technical team with strong track record ▪ Board skillset to drive next phase of growth ▪ Supportive top-20 shareholders

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

==> picture [240 x 416] intentionally omitted <==

2 507,00ozs attributable GML – 9,596,000t @ 1.6g/t for 507,000 ounces of contained gold. See ASX announcement dated 27 September 2022

1 10,073,000 tonnes @1.6g/t for 526,000 ounces of contained gold. See ASX announcement dated 27 September 2022

Corporate Summary 4

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

CAPITAL STRUCTURE	CAPITAL STRUCTURE
	GML
ASX Ticker
Shares on issue	266,333,543
Executive Performance Options and Performance Rights	6,100,000
Cash balance as at 31 Mar 2023	$2.10M
Listed Investments as at 31 Mar 2023*	$0.77M
Share Price	$0.045
Market Capitalisation	$11.98M
Enterprise Value	$9.11M

MAJOR SHAREHOLDERS	MAJOR SHAREHOLDERS
	10.43%
Harmanis Holdings
OMNI GeoX	6.03%
L11 Capital	3.28%
Enable Investment	2.77%
Top 20	38.87%
Directors(Directly & Indirectly)	12.01%

Includes: 20,000,000 shares in_ _Strickland Metals Ltd (ASX: STK* )

Highly Successful and Experienced Leadership Team  Executive Director since October 2019 5  Mark Cossom Geologist with +25-years experience in gold exploration, mine operations and corporate management  Managing Director Former General Manager - Geology & Exploration at Doray Minerals Ltd

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

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

Debbie Fullarton Non-Exec Chair

• Former Chief Executive Officer of Westgold Ltd

• Former Director of Auris Minerals Ltd

• Director of De Beers Australia Exploration Ltd

• Experienced Corporate Advisor holding qualifications in Geology and Finance

Trent Franklin Non-Exec Director

• Managing Director of Enrizen Financial Group

• Non-Executive Director of Strickland Metals Ltd

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

• Mining Engineer with +40 years experience in various senior operational and corporate roles with Newcrest Mining Ltd, Oxiana/OZ Ltd and Citadel Resources Group Ltd

Peter Lester Non-Exec Director

• Former Non-Executive Chair of Doray Minerals Ltd

• Non-Executive Chair Helix Resources Ltd and Aurora Energy Metals Ltd

Scott Brown Non-Exec Director

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

• +35-year experienced explorer and project developer

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

Peter Langworthy Technical Consultant

• Former Technical Director of Talisman Mining Ltd

• Founding Director of Capricorn Metals Ltd

• Founding Director of Northern Star Resources Ltd

==> picture [139 x 399] intentionally omitted <==

Tier 1-Location Great address, prime position for consolidation 6

==> picture [287 x 225] intentionally omitted <==

Demonstrated Resource Growth Building a strategic base through discovery 7

==> picture [520 x 407] intentionally omitted <==

▪ Over 70% Resources located within upper 100m – shallow, high-grade ounces

• Includes high-grade Indicated Resource of 142,000oz at 2.1g/t[1]

▪ Maiden Resources for new discoveries Julias (77koz), Evermore (67koz) and Achilles North/Airport (99koz) delivered in 2022

▪ 4/5 Resources on granted Mining Leases

• Targeting critical mass of shallow, oxide gold Resources

1 2,148,000 tonnes @ 2.1g/t for 142,000 ounces of contained gold. See ASX announcement dated 27 September 2022.

Step-Change Discovery Focus Taking Montague to the next level 8

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

==> picture [329 x 480] intentionally omitted <==

Project Wide Targeting Study Aiming to unlock potential across the entire Project 9

==> picture [124 x 95] intentionally omitted <==

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

Wilsons/Shiraz (HRN)
469koz Au
4m @ 10g/t Au
----- End of picture text -----

• Model Earth Pty Ltd consultants completed project-wide study

• ▪ Key structural controls and geochemical anomalism along prospective gold-bearing domains

• Seismic survey to target prospective zones below existing Resources

==> picture [92 x 32] intentionally omitted <==

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

12m @ 1.0g/t Au
----- End of picture text -----

• New targets to be generated in under-explored regions of the Project, with untested drilling intersections including:

• TTR0944: 4m @ 10g/t Au from 32m* - Montague North

• ▪ TTRC439: 12m @ 1.0g/t Au from 76m - Montague North

• 3660/1472: 11m @ 4.5g/t Au from 58m - Montague West

• ▪ GRB660: 22m @ 2.3g/t Au from 61m - Montague West ▪ GRB619: 13m @ 2.2g/t Au from 50m - Montague West

• Large scale geochemical and scout drilling programs underway

==> picture [238 x 149] intentionally omitted <==

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

MONTAGUE DOME
526k oz Resource
~150k oz Past Production
Howards (HRN)
230koz Au
----- End of picture text -----

Montague Dome Seismic Survey Key step towards deep testing of Montague system 10

• Approx. 17km of 2-dimensional seismic traverses

• Survey aims to provide visualisation of major structures at depth

• Currently host 526,000oz Au[1] near-surface

• Priority target Mineral Resources around the Montague Granodiorite Dome

  • Dome intrusion geometry

  • Flexures and splays in main mineralised shears

  • Parallel repetitions of mineralised shears

• Survey to aid design of deep diamond holes targeting untapped targets at depths +200m

• Survey complete, processing underway

• EIS grant received for initial deep diamond hole

==> picture [365 x 516] intentionally omitted <==

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

10
----- End of picture text -----

1 10,073,000 tonnes @1.6g/t for 526,000 ounces of contained gold. See ASX announcement dated 27 September 2022

Caledonian-Evermore Corridor Major mineralised shear only tested to 250m 11

▪ Major shear zone host to three historic pits and current +230,000oz gold Resources over +4km

• Deepest hole only 250m below surface

▪ GDD023: 3.2m @ 5.0g/t Au

▪ Open north of Evermore and south of Caledonian

==> picture [292 x 219] intentionally omitted <==

==> picture [884 x 243] intentionally omitted <==

Montague North Soil Geochem Survey First-pass exploration over +15km of strike extension 12

▪ Recently granted tenure at Montague North

• Strike extensions to Mineralised Tokay Shear obscured under cover

• First-pass soil geochemistry survey to test major area of interest

==> picture [155 x 220] intentionally omitted <==

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

Wilsons/Shiraz (HRN)
469koz Au
4m @ 10g/t Au
12m @ 1.0g/t Au
----- End of picture text -----

• Ties into previous soil programs

• Combined with targeting study, survey will provide targets for first-pass

air-core drill testing

• Air-core rig booked for June 2023

==> picture [238 x 149] intentionally omitted <==

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

MONTAGUE DOME
526k oz Resource
~150k oz Past Production
Howards (HRN)
230koz Au
----- End of picture text -----

Achilles East Large-scale potential next to 99,000oz Achilles Resource 13

▪ New zone – over 150m wide, 600m along strike and open

▪ Broad scale mineralisation in granodiorite

▪ Significant new RC intercepts:

• GRC945: 12m @ 5.6g/t Au from 56m

• GRC941: 18m @ 2.0g/t Au from 31m within 30m @ 1.3g/t Au from 31m

• ▪ GRC931: 14m @ 1.6g/t Au from 68m within 63m @ 0.6g/t Au from 21m

• GRC929: 22m @ 1.0g/t Au from 115m within 54m @ 0.5g/t from 112m

• Corresponding to significant historic RC intercepts

• WRC012: 147m @ 0.4g/t Au from 21m

• AGRC001: 120m @ 0.4g/t Au from 80m

• WRC011: 47m @ 0.7g/t Au from 76m

• Clear geophysical anomaly in granodiorite over 4km long

• Reminder of large-scale prospectivity

==> picture [358 x 503] intentionally omitted <==

Julias – Flametree Another new shallow, oxide gold discovery 14

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

• 77,000oz initial Mineral Resource (58,000oz attributable GML)[1]

• Located on granted Mining Lease

• Julias RC results confirm solid mineralisation over 500m:

• GRC796: 11m @ 6.0g/t Au from 58m

• GRC760: 13m @ 3.2g/t Au from 67m

• GRC763: 10m @ 3.0g/t Au from 38m, and

  • 2m @ 2.4g/t Au from 60m

• Continued potential to extend the initial Resource

• Significant widths of oxide gold mineralisation intersected for over 700m south: ▪ GWAC1034: 4m @ 8.3g/t Au from 56m

• GWAC0965: 24m @ 1.4g/t Au from 16m

• GWAC1023: 5m @ 1.9g/t Au from 36m

• Emerging as a significant new oxide gold corridor at Montague

==> picture [365 x 515] intentionally omitted <==

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

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

1 Julias located on M57/427 which is owned 75% GML 25% Red 5 Ltd

Montague-Boulder Deposit Robust Indicated and Inferred Base 15

▪ 163,000oz Mineral Resource

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

▪ Located on granted Mining Lease

• Recent drilling continuing to extend shallow mineralisation: ▪ GRC895: 4m @ 8.7g/t Au from 14m, and

▪ GRC873: 4m @ 2.3g/t Au from 5m

• Further potential for growth within the granodiorite:

• GRC873: 5m @ 3.6g/t Au from 139m

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

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

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

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

SensOre Ltd – Li Exploration Farmout Risk free exposure to Li potential of Montague 16

▪ SensOre (ASX: S3N) to explore selected tenements for Li, utilizing their SensOre DPT[© ] technology to generate targets

• SensOre Ltd entered into a farmin/JV agreement to earn up to 80% in Li (and by product) rights in selected tenements

• SensOre to use their proprietary SensOre DPT[©] artificial intelligence tool

• SensOre required to spend $4.5m over 4.5 years, with a minimum 50% direct drilling costs, to earn 80% of Li (and by product) rights

• Gateway to retain 100% of other mineral rights, including gold and base metals

• Gateway free-carried to BFS

• Gateway retains a claw-back option to 30%

==> picture [366 x 480] intentionally omitted <==

Summary 17

Key Investment Takeaways 18

▪ Focused gold explorer in an unconsolidated Tier-1 district

LOCATION ▪ Focused gold explorer in an unconsolidated Tier-1 district FOCUSED ON ▪ 2023 Exploration strategy targeting step-change additions to RESOURCE existing 526,000oz[1] Mineral Resource across entire Project GROWTH ▪ SHALLOW Large under-explored gold system with clear potential for OUNCES, multiple sizeable deposits BIG SYSTEM ▪ Highly leveraged to a resurgent A$ gold price ▪ SUCCESS Experienced and successful board and management team with strong track record and diverse skill set

==> picture [213 x 279] intentionally omitted <==

1 10,073,000 tonnes @1.6g/t for 526,000 ounces of contained gold. 507,000 ounces attributable GML. See ASX announcement dated 27 September 2022.

18

==> picture [507 x 541] intentionally omitted <==

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

19
----- End of picture text -----

Thank You

==> picture [202 x 87] intentionally omitted <==

Contact Details

==> picture [18 x 19] intentionally omitted <==

B1/431 Roberts Road, Subiaco WA 6008, Australia info@gatewaymining.com.au +61 8 6383 9969 www.gatewaymining.com.au

==> picture [18 x 19] intentionally omitted <==

==> picture [18 x 19] intentionally omitted <==