GATEWAY MINING LIMITED — Investor Presentation 2021

Apr 29, 2021

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High-quality, camp-scale exploration asset with exceptional pipeline of targets +35,000m of RC, diamond and air-core drilling well underway – initial assays received Emerging high-grade discovery at Evermore beginning to take shape

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Important Notice and Disclaimer

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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.

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TIER-1 LOCATION

OPPORTUNITY

EXISTING RESOURCES

WELL-FUNDED

SKILLED TEAM

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Our Investment Pro osition p

▪ 100% ownership of Gidgee Gold Project, 800km NE of Perth

▪ 1,000km[2] of GML-controlled tenure following strategic consolidation

▪ Proximity to several multi-million ounce deposits

• A “neglected” Greenstone Belt in WA’s north-eastern goldfields with minimal modern exploration

• Predominantly targeting shallow (0-200m) mineralisation at 3 priority target areas

▪ Independent review indicates “free-milling” characteristics

▪ High-grade discovery at Evermore validating exploration strategy

▪ Initial 240,000oz Inferred Resource[1] across two deposits

▪ Well-established potential for large-scale gold systems

▪ Strong balance sheet with ~$5.69M cash and no debt

▪ Ability to maintain a systematic approach to exploration

▪ +35,000m of RC, diamond and air-core drilling underway

• Experienced and successful management team with strong track record

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

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Cor orate Summar p y

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CAPITAL STRUCTURE	CAPITAL STRUCTURE
ASX Ticker	GML
Shares on issue	1,903,635,600
Executive Performance Options	28,000,000
Cash balance as at 31 March 2021	$5.69m
Share Price	$0.026
Market Capitalisation	$49.5m

12-MONTH SHARE PRICE

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MAJOR SHAREHOLDERS	MAJOR SHAREHOLDERS
Harmanis Holdings	12.31%
OMNI GeoX	7.77%
L11 Capital	3.61%
Crest Investment Group	2.03%
Top 20	39.04%
Directors(Directly & Indirectly)	15.04%

BOARD OF DIRECTORS

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

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Highly Successful and Experienced Leadership Team

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Peter Langworthy Executive Chairman

Mark Cossom Managing Director

Trent Franklin Non-Exec Director

Debbie Fullarton Non-Exec Director

Scott Brown Non-Exec Director

Kar Chua

Company Secretary

• 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 Technical Director at Talisman Mining Ltd

• Founding Director at Capricorn Metals Ltd

• Founding Director at Northern Star Resources Ltd

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

▪ Led the exploration and mine geology teams at Doray Minerals

▪ 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

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Montague Granodiorite Dome – Similar to +1Moz WA Systems

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▪ Strong geological analogy to the +5Moz King of the Hills Gold Deposit (Red 5 Limited)

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

• Highly prospective Eastern Margin not explored

▪ Majority of previous drilling ineffective:

• Only 10% of drilling >50m depth

▪ Three Major Target Areas:

• Priority 1 – Northwest Margin incl. Evermore

• Priority 2 – Achilles

• Priority 3 - Kashmir

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▪ King of the Hills Gold Deposit (same scale as the Montague Dome)
▪ +5Moz endowment (mined and current resource)
▪
Red 5 Limited (ASX: RED)
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Evermore Prospect – New Discovery on the NW Margin

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SIGNIFICANT HIGH-GRADE GOLD DISCOVERY BETWEEN WHISTLER AND MONTAGUE DEPOSITS AT GIDGEE

LOWER ZONE

• GRC550: 15m @ 3.0g/t Au from 104m and 10m @ 9.2g/t Au from 140m

• GRC538: 10m @ 2.5g/t Au from 114m

• ▪ GRC630: 7m @ 11.7g/t Au from 97m

• GRC651: 12m @ 5.6g/t Au from 78m, including 4m @ 13.2g/t Au

• High grades intersected ~420metres along strike, and remains open in all directions

• Significant new discovery away from areas of historic mining activity

• Substantial zone of strong gold mineralisation hosted in ultramafic intrusive rocks

• New geological host and mineralisation style for the project

• Potential for stacked mineralisation down dip

MONTAGUE LODES

• GRC566: 8m @ 3.0g/t Au from 92m

• GRC534: 6m @ 6.1g/t Au from 88m

• ▪ GRC535: 3m @ 5.5g/t Au from 46m ▪ GRC496: 6m @ 6.0g/t Au from 54m

• Northern extension of structures hosting the Montague-Boulder resource: 1.6km strike

• Structures located in immediate hanging wall of the Lower Zone Discovery

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(See ASX announcements dated 1 September 2020 , 20 November 2020, 22 January 2021 and 28 April 2021)

Evermore Prospect – New Discovery on the NW Margin

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SIGNIFICANT HIGH-GRADE GOLD DISCOVERY BETWEEN WHISTLER AND MONTAGUE DEPOSITS AT GIDGEE

LOWER ZONE

• GRC550: 15m @ 3.0g/t Au from 104m and 10m @ 9.2g/t Au from 140m

• GRC538: 10m @ 2.5g/t Au from 114m

• ▪ GRC630: 7m @ 11.7g/t Au from 97m

• GRC651: 12m @ 5.6g/t Au from 78m, including 4m @ 13.2g/t Au

• High grades intersected ~420metres along strike, and remains open in all directions

• Significant new discovery away from areas of historic mining activity

• Substantial zone of strong gold mineralisation hosted in ultramafic intrusive rocks

• New geological host and mineralisation style for the project

• Potential for stacked mineralisation down dip

MONTAGUE LODES

• GRC566: 8m @ 3.0g/t Au from 92m

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• GRC534: 6m @ 6.1g/t Au from 88m

• ▪ GRC535: 3m @ 5.5g/t Au from 46m ▪ GRC496: 6m @ 6.0g/t Au from 54m

• Northern extension of structures hosting the Montague-Boulder resource: 1.6km strike

• Structures located in immediate hanging wall of the Lower Zone Discovery

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(See ASX announcements dated 1 September 2020 , 20 November 2020, 22 January 2021 and 28 April 2021)

Evermore Prospect – New Discovery on the NW Margin

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SIGNIFICANT HIGH-GRADE GOLD DISCOVERY BETWEEN WHISTLER AND MONTAGUE DEPOSITS AT GIDGEE

LOWER ZONE

• GRC550: 15m @ 3.0g/t Au from 104m and 10m @ 9.2g/t Au from 140m

• GRC538: 10m @ 2.5g/t Au from 114m

• ▪ GRC630: 7m @ 11.7g/t Au from 97m

• GRC651: 12m @ 5.6g/t Au from 78m, including 4m @ 13.2g/t Au

• High grades intersected ~420metres along strike, and remains open in all directions

• Significant new discovery away from areas of historic mining activity

• Substantial zone of strong gold mineralisation hosted in ultramafic intrusive rocks

• New geological host and mineralisation style for the project

• Potential for stacked mineralisation down dip

MONTAGUE LODES

• GRC566: 8m @ 3.0g/t Au from 92m

• GRC534: 6m @ 6.1g/t Au from 88m

• GRC535: 3m @ 5.5g/t Au from 46m

• ▪ GRC496: 6m @ 6.0g/t Au from 54m

• Northern extension of structures hosting the Montague-Boulder resource: 1.6km strike

• Structures located in immediate hanging wall of the Lower Zone Discovery

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(See ASX announcements dated 1 September 2020 , 20 November 2020, 22 January 2021 and 28 April 2021)

Montague Resource – Successful In-fill and Potential Additions

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MONTAGUE-BOULDER DEPOSIT CONTINUES TO GROW IN STATURE WITH OUTSTANDING NEW HIGH-GRADE DRILLING RESULTS

Consistent high-grade results from key areas of in-fill drilling paves the way for an upgrade to current 120koz Inferred Resource while step-out drilling shows strong growth potential

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

• ▪ GRC612: 3m @ 3.7g/t Au from 88m (~160m south of existing Resource)

• GRC588: 6m @ 6.2g/t Au from 96m

• ▪ GRC591: 3m @ 9.0g/t Au from 62m

• GRC625: 7m @ 4.6g/t Au from 112m

• ▪ GRC593: 6m @ 3.6g/t Au from 11m

• Coherent high-grade domains within broader mineralised shear zone

▪ Increased confidence in resource classification with additional drilling

• Some deeper holes indicate potential for additional lodes beneath the existing interpreted positions:

• GRC599: 5m @ 17.4g/t Au from 83m

• GRC583: 5m @ 2.7g/t Au from 115m

• GRC603: 2m @ 5.6g/t Au from 178m

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(See ASX announcement dated 11 January 2021)

Montague Resource – Successful Infill and Potential Additions

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MONTAGUE-BOULDER DEPOSIT CONTINUES TO GROW IN STATURE WITH OUTSTANDING NEW HIGH-GRADE DRILLING RESULTS

Consistent high-grade results from key areas of in-fill drilling paves the way for an upgrade to current 120koz Inferred Resource while step-out drilling shows strong growth potential

▪ GRC609: 5m @ 6.9g/t Au from 67m (~100m south of existing Resource) ▪ GRC612: 3m @ 3.7g/t Au from 88m (~160m south of existing Resource)

• GRC588: 6m @ 6.2g/t Au from 96m

• GRC591: 3m @ 9.0g/t Au from 62m

• GRC625: 7m @ 4.6g/t Au from 112m

• GRC593: 6m @ 3.6g/t Au from 11m

• Coherent high-grade domains within broader mineralised shear zone

▪ Increased confidence in resource classification with additional drilling

• Some deeper holes indicate potential for additional lodes beneath the existing interpreted positions:

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• GRC599: 5m @ 17.4g/t Au from 83m

• GRC583: 5m @ 2.7g/t Au from 115m

• GRC603: 2m @ 5.6g/t Au from 178m

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(See ASX announcement dated 11 January 2021)

Priority 2 Achilles Corridor – Northern Step-Out RC Drilling

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ZONE OF SHALLOW OXIDE MINERALISATION AT ACHILLES SIGNIFICANTLY EXTENDED BY STEP-OUT DRILLING

Gold mineralisation now defined over a 700m strike length and still open to the north and south;

▪ 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

▪ Widespaced step-out traverses

▪ Mineralisation over 1km between two historical open pits

▪ Shallow – very little testing at depth

• Drilling demonstrates ineffective results from historical RAB drilling

▪ Follow-up drilling being planned

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(See ASX announcement dated 17 September 2020)

Priority 2 Achilles Corridor– Southern Air-core Drilling

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AIR-CORE DRILLING EXPANDS ACHILLES PROSPECT INTO 2.5km-LONG GOLD CORRIDOR AT GIDGEE

200m spaced air-core drilling across new area to the south of Achilles oxide target returns assays up to 16.2g/t and defines high-order oxide and primary gold anomalies

Achilles Structure:

• GWAC0480: 3m @ 5.6g/t Au from 16m (BOH), including 1m @ 16.2g/t Au

• ▪ GWAC0482: 4m @ 1.8g/t Au from 36m

• GRC628: 7m @ 1.6g/t Au from 50m (RC follow-up)

Dandelion Structure

• GWAC0501: 12m @ 1.4g/t Au from 24m, including 4m @ 3.0g/t Au

• ▪ GWAC0497: 4m @ 1.9g/t Au from 28m ▪ GWAC0567: 4m @ 2.1g/t Au from 36m

• First-pass systematic drilling has defined a major new gold target

• Several large-scale anomalies over +1.4km, open to north and south

• Puts into context historic Airport prospect drilling by Gateway:

• GRB1231: 20m @ 15.6g/t Au from 25m

• ▪ GRC015: 17m @ 14.7g/t Au from 30m ▪ GRB1253: 15m @ 5.1g/t Au from 35m

• Continuation of the Achilles oxide structure tested by RC drilling

• Significant new high-priority target, alongside the North West Margin trend

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(See ASX announcement dated 4 November 2020)

et – O enin u Priority 3 Kashmir Targ p g p the Eastern Margin

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SIGNIFICANT SHALLOW, HIGH-GRADE GOLD INTERSECTED IN MAIDEN DRILLING AT 1.8KM LONG KASHMIR GOLD ANOMALY

Grades of up to 8.8g/t Au returned from initial reconnaissance Reverse Circulation drilling within the extensive Kashmir gold-in-soil anomaly, providing an outstanding target for follow-up work

▪ 1km spaced reconnaissance drilling intersects high-grade mineralised structure

• 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)

• Immediately along strike of 200koz Howards Gold Resource (HRN)

• Both mafic hosted and granodiorite hosted styles of mineralisation

• Opens up 8km of prospective contact that is totally unexplored

▪ Follow-up drilling scheduled for 2021

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(See ASX announcement dated 8 September 2020)

et – O enin u Priority 3 Kashmir Targ p g p the Eastern Margin

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SIGNIFICANT SHALLOW, HIGH-GRADE GOLD INTERSECTED IN MAIDEN DRILLING AT 1.8KM LONG KASHMIR GOLD ANOMALY

Grades of up to 8.8g/t Au returned from initial reconnaissance Reverse Circulation drilling within the extensive Kashmir gold-in-soil anomaly, providing an outstanding target for follow-up work

▪ 1km spaced reconnaissance drilling intersects high-grade mineralised structure

• 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)

▪ Immediately along strike of 200koz Howards Gold Resource (HRN)

• Both mafic hosted and granodiorite hosted styles of mineralisation

• Opens up 8km of prospective contact that is totally unexplored

▪ Follow-up drilling scheduled for 2021

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(See ASX announcement dated 8 September 2020)

000km[2 ] now controlled Project Consolidation – over 1,

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MAJOR FOOTPRINT CONSOLIDATED WITHIN THE GUM CREEK GREENSTONE BELT

Gateway has established a major landholding within the highly prospective and under-explored Gum Creek Greenstone Belt through a series of low-cost deals

▪ Successful divestment strategy for non-core projects executed to sharpen focus on Gidgee.

• Significant portfolio of 3[rd] party shareholdings and royalties accumulated

• Project area now covers an area of approx. 1,000km[2] spanning the western and eastern sides of the highly prospective Gum Creek Greenstone Belt.

▪ Golden Mile Farm-in:

• Host to a ~30km long major gold-bearing structural corridor (termed the “Woodley Domain”)

• Third major identified gold trend within the belt after:

• Eastern Montague Domain: +1Moz endowment

• Central Gidgee Domain: +2Moz endowment .

• Previous exploration highlights significant gold anomalism, which has only been followed up by rudimentary drilling, e.g.:

• 40m @ 3.0g/t Au from surface *

• 20m @ 2.5g/t Au from surface*

• 24m @ 3.3g/t from surface *

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Montague
Granodiorite
Dome
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(See ASX announcement dated 23 July 2020)

• Whole-hole composite sample

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Continued Drilling Focus 1H 2021 – Over 35,000m Drilling

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▪ 12,000m of RC and 3,000m diamond drilling in-progress:

• Extensive follow-up on the Evermore Prospect – Lower Zone

• Deeper drilling to test for potential stacked repeats

• Systematic RC drilling of western contact between Montague-Boulder and Caledonian NE Pits

• Stratigraphic drilling along margin of the Montague Granodiorite to gain valuable geological information (EIS co-funded)

• Further RC drilling to follow-up on recently announced results

▪ 20,000m of AC drilling planned:

• Continued extension of the Achilles south corridor over another 3km

• Scout drilling of the granodiorite contact east of the Whistler deposit

• First-pass exploration of untested parallel geochemical anomalies west of the Northwest Margin

• Extensional drilling of additional supergene Au mineralisation previously identified at Flametree

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LOCATION

FOCUS

GROWTH

FUNDING

SUCCESS

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Key Investment Takeways

▪ WA gold focus, project located in one of Australia’s premier gold districts ▪ Proven endowment

▪ Minimal modern, systematic exploration

▪ Focus is on shallow mineralisation – three priority target areas

▪ New blind discovery at Evermore away from historic mining areas ▪ +3km of prospective strike-length on the Northwest Margin

▪ Independent review indicates “free-milling” characteristics

▪ Initial 240,000oz Inferred Resource[1] across two deposits with plenty of room to grow

▪ Strong balance sheet with ~$5.69M cash and no debt

▪ Strategic 3[rd] party shareholding and royalty portfolio accumulated ▪ +35,000m of RC, diamond and air-core drilling underway

• Experienced and successful management team with strong track record

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

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High-quality, camp-scale exploration asset with exceptional pipeline of targets +35,000m of RC, diamond and air-core drilling well underway – initial assays received Emerging high-grade discovery at Evermore beginning to take shape

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