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ARIS MINING REPORTS Q3 2025 RESULTS Segovia Ramp-Up Driving Profitable Growth: Record Revenue, Cash Flow, and Adjusted Earnings

Mine Development & Operations Financials

News Release

TSX: ARIS | NYSE-A: ARMN | aris-mining.com 1

ARIS MINING REPORTS Q3 2025 RESULTS

Segovia Ramp-Up Driving Profitable Growth:

Record Revenue, Cash Flow, and Adjusted Earnings

Vancouver, Canada, October 29, 2025 – Aris Mining Corporation (Aris Mining or the Company) (TSX: ARIS; NYSE -

A: ARMN) announces its financial and operating results for the three and nine months ended September 30, 2025

(Q3 2025 and 9M 2025). All amounts are in U.S. dollars unless otherwise indicated.

Q3 2025 Financial Performance

• Revenue of $253.5 million, up 27% from Q2 2025 and 93% from Q3 2024, driven by higher gold prices and

increased sales volumes.

• Adjusted EBITDA1 of $131.1 million, up 33% from Q2 2025 and triple Q3 2024. On a trailing 12-month basis,

Adjusted EBITDA1 has reached $352.0 million.

• Adjusted net earnings1 of $71.8 million or $0.36/share, up from $0.27/share in Q2 2025 and $0.08/share in

Q3 2024.

• Cash balance increased to $417.9 million as of September 30, 2025, up from $ 310.2 million at June 30,

2025. This increase primarily reflects:

o $90.8 million of cash flow after sustaining capital and income taxes;

o $60.5 million of proceeds from the exercise of ARIS.WT .A warrants (July 2025 expiry); and

o $13.2 million of proceeds from the sale of the Juby Gold Project; partially offset by

o $48.1 million invested in growth capital.

• Net debt reduced to $64 million, down from $241 million at year-end 2024.

Neil Woodyer, CEO, commented “The production ramp-up at Segovia is progressing well, leading to record financial

results and a cash balance of $418 million. This year, we have also delivered two major technical studies – the Soto

Norte Prefeasibility Study and the Toroparu Preliminary Economic Assessment . These projects r einforce the

strength of our growth pipeline beyond Segovia and Marmato, where construction of the Bulk Mining Zone remains

on schedule for first gold in the second half of 2026. With record revenue, cash flow, and earnings in Q3, Aris Mining

is financially strong and strategically positioned for continued growth into 2026 and beyond.”

Q3 2025 Q2 2025 Q1 2025 Q3 2024

Gold production ounces (oz), total 73,236 58,652 54,763 53,608

Gold sold (oz), total 73,001 61,024 54,281 53,769

Segovia – AISC, Owner Mining ($/oz sold) $1,452 $1,520 $1,482 $1,451

Segovia – CMP AISC Sales Margin* 44% 42% 41% 34%

EBITDA $96.5M $31.6M $39.7M $27.8M

Adjusted EBITDA1 $131.1M $98.7M $66.6M $43.0M

Adjusted EBITDA1, last 12 months $352.0M $264.0M $201.3M $145.7M

News Release

TSX: ARIS | NYSE-A: ARMN | aris-mining.com 2

Q3 2025 Q2 2025 Q1 2025 Q3 2024

Net earnings (loss)2 $42.0M3 or

$0.21/share

$(16.9)M3 or

$(0.09)/share

$2.4M or

$0.01/share

$(2.1)M or

$(0.01)/share

Adjusted earnings1 $71.8M or

$0.36/share

$47.8M or

$0.27/share

$27.2M or

$0.16/share

$13.1M or

$0.08/share

Adjusted earnings1, last 12 months $171.5M or

$0.95/share

$112.7M or

$0.65/share

$77.7M or

$0.46/share

$41.5M or

$0.28/share

Q3 2025 Operational Performance

• Gold production totaled 73,236 oz, a 25% increase from 58,652 oz in Q2 2025. Production has progressively

increased following the June 2025 commissioning of the second mill at Segovia on time and within budget.

• Marmato Narrow Vein Zone produced 7,687 oz, an 8% increase over Q2 2025 and 26% higher than Q3 2024,

supported by stable throughput and higher average gold grades.

• Segovia Operations produced 65,549 oz, supported by gold grades of 9.9 g/t, gold recoveries of 96.1%, and

a 31% increase in tonnes milled compared to Q2 2025.

o AISC margin increased to $121.5 million, up 39% from Q2 2025. On a trailing 12-month basis, AISC

margin has reached $327.9 million.

o Owner-operated Mining AISC was $1,452/oz compared to $1,520/oz in Q2 2025, bringing the 9M

2025 average to $1,482/oz, tracking toward the lower end of the full year 2025 guidance range of

$1,450/oz to $1,600/oz.

o Contract Mining Partner (CMP) sourced gold delivered an AISC sales margin of 44%, contributing

to a 43% margin for 9M 2025, which is above the full-year 2025 guidance range of 35% to 40%.

o Total AISC of $1,641/oz compared to $1,681/oz in Q2 2025, reflecting per ounce cost improvements

primarily due to increased gold sales volumes.

Figure 1: Strong AISC Margin Growth ($ million) – Segovia

$14.1 $23.1

$35.3 $37.0

$57.8

$83.1

$18.1

$21.0

$23.0 $23.9

$29.4

$38.4

$32.2

$44.1

$58.3 $60.9

$87.2

$121.5

Q2 2024 Q3 2024 Q4 2024 Q1 2025 Q2 2025 Q3 2025

CMP AISC Margin

Owner Mining AISC Margin

Total

News Release

TSX: ARIS | NYSE-A: ARMN | aris-mining.com 3

Figure 2: Total AISC and Realized Gold Price Trends ($/oz) – Segovia

Total Segovia Operating Information Q3 2025 Q2 2025 Q3 2024

Average realized gold price ($/oz sold) $3,494 $3,303 $2,457

Tonnes milled (t) 219,550 167,960 166,868

Average tonnes milled per day (tpd) 2,553 1,976 1,940

Average gold grade processed (g/t) 9.87 9.85 9.23

Gold produced (oz) 65,549 51,527 47,493

Gold sold (oz) 65,580 53,751 48,059

AISC margin ($M) 121.5 87.2 44.1

Segovia Operating Information by Segment Q3 2025 Q2 2025 Q3 2024

Owner Mining

Gold sold (oz) 40,984 32,685 22,952

Cash costs – ($/oz sold) $999 $1,047 $1,081

AISC – ($/oz sold) $1,452 $1,520 $1,451

AISC margin ($M) 83.1 57.8 23.1

CMPs

Gold sold (oz) 24,596 21,066 25,107

Cash costs – ($/oz sold) $1,653 $1,622 $1,417

AISC – ($/oz sold) $1,955 $1,931 $1,622

AISC sales margin (%) 44% 42% 34%

AISC margin ($M) 38.4 29.4 21.0

* Aris Mining operates its own mines and contracts with community-based mining partners, referred to as Contract Mining Partners

(CMPs), to increase total gold production. Some partners work within Aris Mining’s infrastructure, while others manage their own

mining operations on Aris Mining’s titles using their own infrastructure. In addition, Aris Mining purchases high grade mill feed from

third-party contractors operating off-title, which further optimizes production and increases operating margins.

$2,313

$2,457

$2,642

$2,855

$3,303

$3,494

$1,571 $1,540 $1,485 $1,570 $1,681 $1,641

Q2 2024 Q3 2024 Q4 2024 Q1 2025 Q2 2025 Q3 2025

AISC Margin/oz

Realized Gold Price/oz

Total AISC/oz

$1,853

$742

News Release

TSX: ARIS | NYSE-A: ARMN | aris-mining.com 4

Corporate and Project Development Highlights

• Strong cash generation funding growth:

o Operations generated $90.8 million in cash flow after sustaining capital and income taxes in Q3 2025,

fully funding all growth and expansion initiatives. After expansion capital, Aris Mining generated

$42.6 million in net cash flow . See the Quarterly cash-flow summary in the following sections for

additional cash flow analysis.

• Marmato Bulk Mining Zone construction advancing:

o Development of the main access decline has advanced 580 metres of the planned 1.7 kilometres.

Current development rates average 72 metres per month and are expected to increase to

approximately 150 metres per month once beyond the fault zone, with completion of the full decline

length targeted for August 2026.

o The Los Indios crosscut is advancing toward its connection with the main decline, now approximately

320 metres away. This horizontal development will provide an additional access and ventilation

pathway, enable ore and waste haulage between existing workin gs and new infrastructure.

Importantly, completion of the crosscut will enhance operational flexibility and de-risk the project’s

ramp-up phase by allowing multiple access points for early development and production sequencing.

o Surface construction activities continue to advance safely, with over 2.06 million workhours

completed to date. Bulk earthworks for the process plant platform have reached 95% completion

(294,000 m³ moved), and the retaining wall is over 75% complete. Final shaping of the carbon -in-

pulp (CIP) plant platforms is expected during the first week of November 2025.

o Major equipment, including the primary crusher, SAG mill, ball mill, and filter press, has arrived in

Cartagena. Approximately 95% of long-lead items have been ordered. The contract for the main civil,

mechanical, and electrical works is in place, with the contractor mobilized and construction activities

commenced in October.

o Preparations for the new powerline continue to advance. Land acquisition is complete, and the

environmental impact study has been submitted for approval, enabling construction to commence

in March 2026 following permit issuance. To ensure continuity of com missioning and early

operations, back-up generators are included in the site power plan to mitigate any potential delays

in the grid power connection.

o During Q2 and Q3 2025, we invested $20.1 million and $23.9 million , respectively, toward the

construction budget.

o At the end of Q3, the estimate to complete the project was $250 million, reflecting approximately

$40 million of progress made over the six-month period since the prior estimate of $290 million at

the end of Q1, which had incorporated the scope increase from 4,000 to 5,000 tpd.

o N e t o f t h e r e m a i n i n g $ 8 2 m i l l i o n o f s t r e a m fi n a n c i n g p a y m e n t s t o b e r e c e i v e d f r o m W h e a t o n

Precious Metals, the construction funding requirement is approximately $168 million.

o The project remains on schedule, with first gold in H2 2026, followed by a production ramp-up period

to steady-state operations

News Release

TSX: ARIS | NYSE-A: ARMN | aris-mining.com 5

• Soto Norte Project (51% owned, Colombia):

o Prefeasibility Study (PFS) completed in September 2025, demonstrating robust economics with, on

a 100% basis, after-tax NPV5% of $2.7 billion, IRR of 35%, and 2.3-year payback at $2,600/oz gold.

o Strong leverage to higher gold prices, at $3,000/oz the NPV5% increases to $3.3 billion with IRR of

40.0%.

o The PFS highlights industry -leading environmental design features and integration of local

community miners – 750 tpd (over 20% of 3,500 tpd capacity) has been dedicated to local contract

mining partners.

o Aris Mining is advancing the required studies to apply for an environmental license in H1 2026 for

the development of Soto Norte.

• Toroparu Project (100% owned, Guyana):

o Preliminary Economic Assessment (PEA) completed in October 2025 , outlining another robust

project with after-tax NPV5% of $1.8 billion, IRR of 25.2%, and 3.0-year payback at $3,000/oz gold.

o Aris Mining has initiated a PFS, t a r g e t e d f o r c o m p l e ti o n i n 2 0 2 6 , t o a d v a n c e T o r o p a r u t o w a r d

construction.

• Juby Gold Project Sale:

o Closed in September 2025 for a total consideration of $22 million, streamlining our portfolio to focus

on our core operations and projects in South America.

Endnotes

1 All references to adjusted earnings, EBITDA, adjusted EBITDA, growth capital investment, cash flow after sustaining capital and income taxes,

cash costs and AISC are non-GAAP financial measures in this document. These measures are intended to provide additional information to

investors. They do not have any standardized meanings under IFRS, and therefore may not be comparable to other issuers and should not be

considered in isolation or as a substitute for measure s of performance prepared in accordance with IFRS . Refer to the Non -GAAP Measures

section in this document for a reconciliation of these measures to the most directly comparable financial measure disclosed in the Company’s

financial statements.

2 Net earnings represents net earnings attributable to owners of the company, as presented in the annual and interim financial statements for

the relevant period.

3 A $45.5 million non -cash loss was recognized in Q2 2025 from fair value adjustments to the Company's warrant liability , valued at $40.8

million as of June 30, 2025. The fair value of the liability is directly correlated to the Company's share price, which increased by 38% during Q2

2025 (year-to-date: 82% increase). In July 2025, the Company received an additional $60.5 million in cash proceeds from exercises of these

warrants. With these exercises and the July 29, 2025 expiry of the remaining outstanding warrants, the liability has been fully extinguished,

removing a source of non-cash earnings volatility from future results.

News Release

TSX: ARIS | NYSE-A: ARMN | aris-mining.com 6

Q3 202 5 Conference Call Details

Management will host a conference call on Thursday, October 30, 2025, at 9:00 a.m. New York / 6:00 a.m. Vancouver

/ 2:00 p.m. London / 3:00 p.m. Paris to discuss the results.

Participants may gain expedited access to the conference call by registering at Diamond Pass Registration. Once registered,

call-in details will be displayed on screen which can be used to bypass the operator and avoid the call queue. Registration

will remain open until the end of the live conference call.

Webcast

• Link: Webcast | Q3 2025 Conference Call

Conference Call

• Toll-free North America: +1-833-821-0197

• International: +1-647-846-2328

Audio Recording

• After the call, an audio recording will be available via telephone until end of day November 5, 2025

• Toll-free in the US and Canada: +1-855-669-9658

• International: +1-412-317-0088; and using the access code: 2585542

A replay of the event will be archived at Events & Presentations - Aris Mining Corporation.

Aris Mining's Condensed Consolidated Interim Financial Statements for the three and nine months ended September

30, 2025 and 2024 and related MD&A are available on SEDAR+, in the Company’s filings with the U.S. Securities and

Exchange Commission (the SEC) and in the Financials section of Aris Mining's website here. Hard copies of the

financial statements are available free of charge upon written request to [email protected].

About Aris Mining

Founded in September 2022, Aris Mining was established with a vision to build a leading South America-focused gold

mining company. Our strategy blends current production and cashflow generation with transformational growth

driven by expansions of our operating assets, exploration and development projects. Aris Mining intends to unlock

value through scale and diversification. The Company is listed on the TSX (ARIS) and the NYSE -A (ARMN) and is led

by an experienced team with a track record of value creation, operational excellence, financial discipline and good

corporate governance in the gold mining industry.

Aris Mining operates two underground gold mines in Colombia: the Segovia Operations and the Marmato Complex,

which together produced 210,955 ounces of gold in 2024. With expansions underway, Aris Mining is targeting an

annual production rate of more than 5 00,000 ounces of gold, following the commissioning of the second mill at

Segovia, completed in June and ramping up during H2 2025, and the construction of the Bulk Mining Zone at the

Marmato Complex, expected to start ramping up production in H2 2026. In addition, Aris Mining operates the 51%

owned Soto Norte joint venture, where a PFS study is complete on a new, smaller scale development plan which

confirms Soto Norte as a high -quality, long-life project with robust economics and industry-leading environmental

and social design features. In Guyana, Aris Mining owns the Toroparu gold/copper project, where a new Preliminary

Economic Assessment (PEA) is complete and a Prefeasibility Study is underway.

Colombia is rich in high -grade gold deposits and Aris Mining is actively pursuing partnerships with the Country’s

dynamic small-scale mining sector. With these partnerships, we enable safe, legal, and environmentally responsible

operations that benefit both local communities and the industry.

News Release

TSX: ARIS | NYSE-A: ARMN | aris-mining.com 7

Additional information on Aris Mining can be found at www.aris-mining.com, www.sedarplus.ca, and on

www.sec.gov.

Aris Mining Contact

Oliver Dachsel

Senior Vice President, Capital Markets

+1.917.847.0063

Lillian Chow

Director, Investor Relations & Communications

[email protected]

Cautionary Language

Non-GAAP Measures

EBITDA, adjusted EBITDA, adjusted earnings, cash cost, growth and expansion expenditures, cash flow after sustaining capital

and income tax and AISC are non-GAAP financial measures. These financial measures do not have any standardized meaning

prescribed under IFRS or by Generally Accepted Accounting Principles (GAAP) in the United States, and therefore may not be

comparable to other issuers. For full details on these measures refer to the “Non -GAAP Financial Measures” sections of the

Company’s Management’s Discussion and Analysis for the three and six months ended June 30, 2025 and 2024 and years ended

December 31, 2024 and 2023 (MD&As). The MD&As are incorporated by reference into this news release and are available at

www.aris-mining.com, on the Company’s profile on SEDAR+ at www.sedarplus.ca and in its filings with the SEC at www.sec.gov.

The tables below reconcile the non- GAAP financial measures contained in this news release for the current and comparative

periods to the most directly comparable financial measure disclosed in the Company's interim financial statements for the three

and six months ended June 30, 2025 and 2024; the three months ended March 31, 2025 and 2024, and Company’s annual

financial statements for the three months and years ended December 31, 2024 and 2023.

News Release

TSX: ARIS | NYSE-A: ARMN | aris-mining.com 8

Quarterly cash -flow summary 1

($000's) Q3 2025 Q2 2025 Q1 2025

Gold revenue2 253,456 200,231 154,142

Total cash cost (98,946) (83,166) (72,730)

Royalties2 (10,087) (7,583) (6,359)

Social contributions2 (8,224) (5,562) (4,334)

Sustaining capital (12,210) (12,710) (7,069)

All in sustaining cost (AISC) (129,467) (109,021) (90,492)

AISC margin 123,989 91,210 63,650

Taxes paid2 (13,228) (42,244) (5,121)

General and administration expense2 (5,130) (5,187) (4,106)

Decrease (increase) in VAT receivable (16,023) 30,813 (11,761)

Other changes in working capital (289) (1,718) (11,685)

Impact of foreign exchange losses on cash balances2 1,450 925 768

After-tax adjusted sustaining margin 90,769 73,799 31,745

Expansion and growth capital expenditure

Segovia Operations (9,618) (6,930) (6,368)

Marmato Bulk Mining Zone (31,369) (23,628) (29,661)

Toroparu Project (3,270) (2,741) (2,411)

Soto Norte Project & other (3,879) (3,446) (4,570)

Total expansion and growth capital (48,136) (36,745) (43,010)

Financing and other costs

Proceeds from warrant and option exercises 2 59,805 57,670 5,197

Proceeds from disposition of Juby Project 13,065 - -

Principal repayment of Gold Notes 2 (4,064) (4,063) (3,941)

Capitalized interest paid2 (6,159) (5,802) (5,031)

Interest (paid)2 - (18,000) -

Finance income2 2,437 3,474 2,336

Total financing and other costs 65,084 33,279 (1,439)

Net change in cash2 107,717 70,333 (12,704)

Opening cash balance at beginning of period2 310,164 239,831 252,535

Closing cash balance at end of period2 417,881 310,164 239,831

1. This Quarterly Cash Flow Summary is comprised of certain non-GAAP financial measures. Refer to the Non-GAAP Financial Measures section of this news release

for further information.

2. As presented in the Financial Statements and notes for the respective periods.