Aris Mining : Corporate Presentation - December 2023

A gold producer in the Americas with a

growth-oriented strategy

December 2023

TSX: ARIS | NYSE-A:ARMN

Disclaimer

This presentation contains "forward-looking information" or "forward-looking statements" within the meaning of Canadian and U.S. securities legislation. All statements included herein, other than statements of historical fact, including without limitation statements relating to: the Company's focus and strategy; the Company being on track to meet its 2023 gold production guidance, Marmato Lower Mine's expected gold production and AISC, the foundation to produce approximately 400koz Au in 2026, the Company executing in its strategy to become a 1 Moz Au producer, increasing the capacity of the Maria Dama processing plant and the details, benefits, costs and timing thereof, the potential to increase annual gold production at the Segovia Operations from 200,000 to 300,000 ounces per year, the allocation of extra capacity to small- scale miners and the expected benefits thereof, expectation to exceed planned meters and complete drilling within original 2023 drilling budget, and the Marmato Lower Mine expansion and Soto Norte Project advancement and the details, costs and timing thereof. Generally, the forward-looking information and forward- looking statements can be identified by the use of forward-looking terminology such as "become", "believe", "estimate", "expect", "forward", "intend", "plan", "potential" or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will" be taken, "occur" or "be achieved". Statements concerning mineral reserve estimates and mineral resource estimates may also be deemed to constitute forward looking information to the extent that they involve estimates of the mineralization that will be encountered. The material factors or assumptions used to develop forward looking information or statements are disclosed throughout this presentation.

Forward looking information and forward looking statements, while based on management's best estimates and assumptions, are subject to known and unknown risks, uncertainties and other factors that may cause the actual results, level of activity, performance or achievements of Aris Mining to be materially different from those expressed or implied by such forward-looking information or forward looking statements, including but not limited to: local environmental and regulatory requirements and delays in obtaining required environmental and other licenses, changes in national and local government legislation, taxation, controls, regulations and political or economic developments, uncertainties and hazards associated with gold exploration, development and mining, expectation to exceed planned meters and complete 105,000 m of drilling within original 2023 drilling budget, risks associated with tailings management, risks associated with operating in foreign jurisdictions, risks associated with capital cost estimates, dependence of operations on infrastructure, costs associated with the decommissioning of the Company's properties, fluctuations in foreign exchange or interest rates and stock market volatility, operational and technical problems, the ability to maintain good relations with employees and labour unions, competition; reliance on key personnel, litigation risks, uncertainties relating to title to property and mineral resource and mineral reserve estimates, risks associated with acquisitions and integration, risks associated with the Company's ability to meet its financial obligations as they fall due, volatility in the price of gold, or certain other commodities, risks that actual production may be less than estimated, risks associated with servicing indebtedness, additional funding requirements, risks associated with general economic factors, risks associated with secured debt, changes in the accessibility and availability of insurance for mining operations and property, environmental, sustainability and governance practices and performance, risks associated with climate change, risks associated with the reliance on experts outside of Canada, pandemics, epidemics and public health crises, potential conflicts of interest, uncertainties relating to the enforcement of civil labilities outside of Canada, cyber-security risks, risks associated with operating a joint venture, volatility of the share price, the ability to pay dividends in the future, as well as those factors discussed in the section entitled "Risk Factors" in Aris Mining's most recent AIF & MD&A available on SEDAR+ at www.sedarplus.caand in its filings with the US Securities and Exchange Commission (the "SEC") at www.sec.gov.

Although Aris Mining has attempted to identify important factors that could cause actual results to differ materially from

those contained in forward-looking information and forward-looking statements, there may be other factors that cause results not to be as anticipated, estimated or intended. There can be no assurance that such information or statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such information or statements. The Company has and continues to disclose in its Management's Discussion and Analysis and other publicly filed documents, changes to material factors or assumptions underlying the forward-looking information and forward- looking statements and to the validity of the information, in the period the changes occur. The forward-looking statements and forward-looking information are made as of the date hereof and Aris Mining disclaims any obligation to update any such factors or to publicly announce the result of any revisions to any of the forward-looking statements or forward-looking information contained herein to reflect future results. Accordingly, readers should not place undue reliance on forward- looking statements and information.

Free cash flow, Cash costs ($ per oz sold), AISC ($ per oz sold), EBITDA, adjusted EBITDA, adjusted (loss)/earnings and additions to mining interests are non-IFRS financial measures and non-IFRS ratios in this document. These measures do not have any standardized meaning prescribed under IFRS, and therefore may not be comparable to other issuers. For full details on these measures and ratios refer to the Non-IFRS Measures section of the Company's Management's Discussion and Analysis for the three and nine months ended September 30, 2023, which is incorporated by reference into this presentation and is available on SEDAR+ at www.sedarplus.caand in filings with the SEC at www.sec.gov.

Certain information contained in this presentation includes market and industry data that has been obtained from or is based upon estimates derived from third party sources. Although the data is believed to be reliable, Aris Mining has not independently verified such information and cannot provide any assurance of its accuracy, currency, reliability, or completeness.

This presentation contains information that may constitute future-orientated financial information or financial outlook information (collectively, "FOFI") about the Company's prospective financial performance, financial position or cash flows, all of which is subject to the same assumptions, risk factors, limitations and qualifications as set forth above. Readers are cautioned that the assumptions used in the preparation of such information, although considered reasonable at the time of preparation, may prove to be imprecise or inaccurate and, as such, undue reliance should not be placed on FOFI. The Company's actual results, performance and achievements could differ materially from those expressed in, or implied by, FOFI. The Company has included FOFI in order to provide readers with a more complete perspective on the Company's future operations and management's current expectations relating to the Company's future performance. Readers are cautioned that such information may not be appropriate for other purposes. FOFI contained herein was made as of the date of this presentation. Unless required by applicable laws, the Company does not undertake any obligation to publicly update or revise any FOFI statements, whether as a result of new information, future events or otherwise.

Qualified Person

Pamela De Mark, P. Geo, Senior Vice President Geology and Exploration for Aris Mining, is a Qualified Person under NI 43- 101, and has reviewed and approved the technical contents of this presentation. All technical information related to the Segovia Operations, Marmato Mine, Soto Norte Project, Toroparu Project, and Juby Project is available at www.aris- mining.com and on SEDAR+ at www.sedarplus.caand in its filings with the SEC at www.sec.gov.

TSX: ARIS | NYSE-A: ARMN | 2

Why Aris Mining?

High Grade Production Growth ~230 koz/yr to +400E koz1/yr Au

• Segovia Ops (195-210koz in 2023) + potential for ~300 koz/yr in 20257
• + 162 koz/yr2 from Marmato Lower Mine
• + Soto Norte Project (50% of 450 koz/yr3).
• + Toroparu Project (5.4 Moz Au in M&I4)

Peer-leading

growth

Financial strength

Cash and Cash Flow

• $210.8M in cash5 & $120M in Marmato project funding
• $156.1M in trailing 12-month adjusted
  EBITDA6

Proven Team
Track record building major gold miners:
Endeavour, Leagold, Goldcorp, Wheaton	Proven
River and Yamana Gold
team

Strategy to

unlock value

Creating Value

By adding scale and diversification, implementing mine optimizations and sustainability practices

1. Estimated consolidated 2026 production based on Marmato PFS and Segovia at steady state. 2. Average annual gold production following construction of Lower Mine. 3. Assumes exercise of option to increase JV ownership from 20% to 50%. 4 See Appendix for details of technical disclosures and full disclosure of Mineral Reserve and Mineral Resource estimates. 5. At September 30, 2023 6. EBITDA is a non-IFRS measure, refer to the MD&As for the periods ended September 30, 2023, December 31, 2022 and September 30, 2022 for a reconciliation of adjusted EBITDA. 7. Assuming increasing capacity of Maria Dama Plant from 2000 to 3000 tpd.

TSX: ARIS | NYSE-A: ARMN | 3

Aggressive Timeline Since Inception

Feb 2021

New Management

New Strategy

Acquired Soto

Norte

• Aris Mining negotiates deal to acquire up-to 50% of World Class Soto Norte asset

Sep 2022

Aris Mining/GCM Merger

Marmato Permitted

• Marmato Lower Mine receives environmental approval
• Kicks off fully-funded production expansion
• Confirms social/operating credibility in Colombia

Nov 2023

Segovia Reserve Boost

Acquired Marmato

• Aris Mining team assumes control of Caldas Gold
• Management group invests ~C$38M of C$85M placement at C$4.50/unit

Mar 2022

Soto Norte JV

Combined with

GCM

• Pairs Segovia's consistent cash flow with a world-class development asset base
• Improves Colombian operator skills set

Jul 2023

Marmato Lower Mine

Approved

Construction started Q3

2023

FY 2026E

400 koz

Au1

Segovia Expansion2

• M+I growth of >100%
• Drives 18-month plan to expand to 3,000 tpd
• Annual production target of 300 koz

1. Estimated consolidated 2026 production based on Marmato PFS and Segovia at steady state. 2. See Appendix for details of technical disclosures and full disclosure of Mineral Reserve and Mineral Resource estimates

TSX: ARIS | NYSE-A: ARMN | 4

A Socially-responsible Gold Miner

Artisanal and Small Mining (ASM) Partnerships

• 85% of the gold mined in Colombia is extracted through artisanal/informal activities
• Informal processing generates the greatest environmental impact, our partnerships measurably reduce that impact
• We have a community-centered approach that includes >68 partnerships with ASM stakeholders
• Colombian government has signaled an interest in mining foreign investment, so long as the investment comes with environmental and social responsibility
• Processing plant at Segovia recovers >95% of gold vs. <50% recovered by informal processing, allowing value to be unlocked and shared
• July 2023 - We received approval to develop the Marmato Lower Mine, allowing
  Marmato's gold production to grow by up to 5 times

We promote the formalization of artisanal and small-scale mining as this process enables all miners to operate in a legal, safe and responsible manner that protects them and the environment.

Aris Mining's 2022 Sustainability Report, summarizes

our performance within relevant SASB metrics and expands on our ASM partnership programs

ASM Unit Porvenir (Marmato), during the first detonation ceremony - May 2023

Segovia	Marmato	Soto Norte
Template	First ever	Opportunity
68 ASM	ASM	to leverage
agreement	our ASM
partners
in Q2/23	framework

TSX: ARIS | NYSE-A: ARMN | 5

Large Mineral Resource. Path to +400E koz Gold/yr3

Production (koz)

Reserves1

5.5 Moz

4%

31%

M+I1

17.5 Moz

Forecast (koz)

				+400
220	233	236	230
2020	2021	2022	2023F	2026E

• Soto Norte
• Toroparu
• Segovia Expansion

65%

15% 19%

Inferred1

8.0 Moz

67%

2 Producing Mines

Avg 11.6 g/t

Avg 6.2 g/t

2 Development Projects

Avg 3.1 g/t

Colombia Guyana Canada

1. Technical disclosures and full reserve and resource table breakdown shown in Appendix; 2. 2023E based on full-year production guidance for Marmato Mine and Segovia Operations. 3. 2026E based on completion of	TSX: ARIS | NYSE-A:ARMN |	6

Marmato Lower Mine expansion in 2025 and Segovia steady state.

Segovia: >6 Moz Recovered Over Last 100 years

• On track to achieve 2023 guidance of 195-210 koz Au at AISC of $1,125/oz to $1,175/oz
• 1.5 Moz produced over last 11 years at average grade of 13.6 g/t Au
• 68 operation agreements with artisanal small-scale miners
• Expanded mineral reserves by 75% (2023); Path to 300 koz/yr1
• Drives cash flow for growth ($156.1M in trailing 12-month EBITDA - Sep 30, 2023)

Maria Dama Plant

• Polymetallic plant produces Zn/Pb from tailings

Expanded to 2,000 tpd in Q3 2022

• Filter press (upgraded 2022) and dry stack tailings commissioned in 2019
• Mill capacity expansion to 3,000 tpd1 underway

1. See appendix for details of technical disclosure and disclosure of Mineral Reserve and Resource estimates.

TSX: ARIS | NYSE-A: ARMN | 7

Segovia Operations - Path to 300 koz/yr

• M+I Resources increased 114% to 3.6 Moz1 due to estimation process improvements
• Mineral Reserve increased +75% from 2022 to 1.3 Moz1
• Mine life extended to nearly 7 years and anticipated to be further extended through ongoing exploration and infill drilling2

6 Segovia Gold Mineral Resource Growth1, net of Product Depletion (Moz)

1400

Segovia Gold Mineral Reserve Growth, net of Product Depletion1 (koz)

5

4

3

2

1

0

1.0

1.1

1.2

1.3

1.3

1.4

1.2

1.4

1.7

1.6

1.6

1.7

1.8

3.6

1200

1000

800

600

400

200

0

						1,320
660	688	670	633	745	755

2017	2018	2019	2020	2021	2022	2023
Previous Measured & Indicated		Previous Inferred		2023 Measured & Indicated		2023 Inferred

2017	2018	2019	2020	2021	2022	2023
Previous Proven & Probable Mineral Reserves		2023 Proven & Probable Mineral Reserves

Maria Dama Plant & Mine Expansion to 3,000 tpd (300koz/yr) from 2,000 tpd

• Capital: US$11 M
• Ore Source: expanded mineral reserve and feed from new ASM partnerships
• Timing: Expect completion in 2025

1. See Appendix for details of technical disclosures and full disclosure of Mineral Reserve and Mineral Resource estimates 2. See "Technical Disclosure and Qualified Person" in the Appendix for full disclosure of technical and scientific details.

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Segovia - Exploration Upside

Regional scale epithermal system undertested

outside of main producing areas (mining 4 of >30 known veins)

Selected Intersects1 - August 16, 2023

El Silencio Mine

• 0.48 m at 647 g/t Au - hole ES-MH10-04 (450 Vein)
• 0.32 m at 109 g/t Au - hole MAN-IU-03 (Manzanillo Vein)
• 0.69 m at 152 g/t Au - hole MAN-IU-005 (Reliquia Vein)

Sandra K Mine

• 0.25 m at 99 g/t Au - hole SK-EU-011 (Sandra K Techo Vein)

Providencia Mine

• 0.60 m at 71 g/t Au - hole MAR-IU-007 (Marmajito Vein)

Carla Mine

• 0.72 m at 62 g/t Au - hole CA-IU-001 (La Gran Colombia Vein)

1. All intersection widths are corrected for true vein width. Refer to exploration update news release dated August 16, 2023 entitled "Aris Mining announces high grade drill results	TSX: ARIS | NYSE-A: ARMN | 9
from ongoing Segovia Operations exploration program", for technical information pertaining to the exploration program.

Marmato - Expanding and Modernizing Existing Mine

Marmato Lower Mine Project1

• Second foundational asset. Started construction of new access roads (key to establish main infrastructure such as new processing plant and mine)
• Takes Aris Mining's consolidated production to ~400 koz/yr1 (2026)
• 20-yearreserve life2 (3.2 Moz at 3.2 g/t)
• Total resources2 are M&I of 6.0 Moz at 3.0 g/t and 2.8 Moz inferred at 2.4 g/t. Resource remains open for expansion
• Maintains Aris Mining's low-cost profile ($1,003/oz LOM AISC3)
• Capex ($280 M) is fully funded from cash, WPM stream and Segovia Operations cash flow
• Bulk tonnage, low cost ($1,003/oz) mechanized operation
• Construction started in September 2023 with access road

works and first pour in Q4/25	For a virtual resource model of the Marmato Mine and the Marmato Lower Mine Project, click here.
1. Refer to the pre-feasibility study on the Marmato Lower Mine Project with an effective date of June 30, 2022. Average annual gold production following construction of the Lower Mine processing plant and	TSX: ARIS | NYSE-A:ARMN |	10
Segovia Operations processing 3,000 tpd. 2. See Appendix for full reserve and resource table breakdown and disclosure of technical information. 3. Non-IFRS measure, see Slide 2 for cautionary language.