Saturday, September 26, 2026
MiningNewsTerminal
Saturday, September 26, 2026 Admin

CS.TO ·

Capstone Increases Net Cash1 Position to $208 Million; Reiterates Annual Guidance as Cozamin Mine Achieves Record Quarterly Production in Q3 2021

Production Results

1 This is an alternative performance measure; please see "Alternative Performance Measures" at the end of this release.

1

October 26, 2021

Capstone Increases Net Cash1 Position to $208 Million; Reiterates Annual Guidance

as Cozamin Mine Achieves Record Quarterly Production in Q3 2021

(All amounts in US$ unless otherwise specified)

Vancouver, British Columbia - Capstone Mining Corp. (“Capstone” or the “Company”) (TSX:CS) today announced

production and financial results for the three (“Q3 2021”) and nine months (“2021 YTD”) ended September 30, 2021.

Consolidated copper production totaled 44.4 million pounds at C1 cash costs1 of $1.96 per payable pound of copper

produced. Link HERE for Capstone’s Q3 2021 management’s discussion and analysis (“ MD&A”) and financial

statements and HERE for the webcast presentation.

Darren Pylot, President and CEO of Capstone commented, “This year Pinto Valley Mine and the communities

nearby have faced wildfires and floods and I’m proud of Capstone’s contribution in emergency relief efforts that

made a real difference. Despite extreme conditions the Mine is still on track to meet annual guidance which is a

testament to the leadership and overall talent at Pinto Valley, enabled by the opti mization investments we have

made over the past few years. Capstone is committed to climate change action to build resilient operations and

stronger communities. Our ESG Strategy and Responsible Sourcing Project will be key to achieve long-term

sustainability and I look forward to unveiling them in 2022.”

Brad Mercer, SVP & COO added, “Severe floods in July & August in Arizona resulted from heavy rains on terrain

burned clean by wildfires just weeks prior . While the first half of the quarter saw significantly reduced mining and

milling rates due to the extreme wet conditions, from September to present the operation has averaged over 60,000

tonnes per day throughput boosted by the completion of our PV3 Optimization project”. Mr. Mercer continued, “Once

again I’m very pleased with our Cozamin Mine performance. We exceeded guidance by delivering low cost, record

production that distinguishes this operation as a first quartile asset”.

OPERATIONAL & FINANCIAL OVERVIEW

• Cash and short-term investments grew by $36.7 million to $208.2 million during the three months ending

September 30, 2021. The Company's total available liquidity 1 was $433.2 million w ith nil long-term debt.

The balance sheet was enhanced by continued strong operating cash flow generation during Q3 2021.

• Operating cash flow before changes in working capital1 of $67.1 million in Q3 2021 driven by strong revenue

in a plus $4 copper environment. Operating cash flow and earnings were negatively impacted by $10.0

million of realized loss on provisional price adjustments plus lag in sales timing of 3.3 million pounds of

copper, impact of approximately $6 million after-tax during the quarter.

• Net income of $35.0 million, or $0.09 per share for Q3 2021. Adjusted net income1 of $35.3 million or $0.09

per share.

• Adjusted EBITDA 1 for Q3 2021 of $72.3 million and 2021 YTD of $318.9 million. Adjusted EBITDA1 is

reflective of Capstone’s strong operational performance and financial leverage of the Company’s EBITDA1

in a robust copper price environment.

• Consolidated copper production of 44.4 million pounds at C1 cash costs 1 of $1.96 per payable pound of

copper produced. Consolidated copper production for 2021 YTD of 135.5 million pounds at C1 cash costs1

of $1.85 per payable pound of copper produced are on track with 2021 guidance.

• Cozamin Mine achieved another record quart erly copper production of 14.1 million pounds at $0.93 per

payable pound of copper produced and attained targeted new run rate of 3,854 tpd. Q3 2021 production

was 33% higher than in Q3 2020 following commissioning of the Calicanto one-way ramp in Q1 2021.

• Pinto Valley Mine quarterly production and C1 cash costs1 were negatively impacted by an estimated 10%

to 30.3 million pounds at $2.44 per payable pound produced by heavy monsoon rains in July and August

causing lower mining and milling rates. While the first half of the quarter saw extreme wet conditions, from

September to present the Operation has averaged over 60,000 tonnes per day ("tpd") upon completion of

the PV3 optimization work.

• There remains strong interest in Santo Domingo and discussions are advancing well. The Santo Domingo

project is a very attractive project and it retains a Decree Law 600 (“DL 600”) Tax Invariability Agreement

NEWS RELEASE

TSX:CS ● capstonemining.com

1 This is an alternative performance measure; please see "Alternative Performance Measures" at the end of this release.

which is expected to protect the project from any potential mining royalty tax changes for the majority of the

current mineral reserve.

Operational Overview

Refer to Capstone’s Q3 2021 MD&A and Financial Statements for detailed operating results.

Q3 2021 Q3 2020 2021 YTD 2020 YTD

Copper production (million pounds)

Pinto Valley 30.3 27.9 96.2 84.9

Cozamin 14.1 10.6 39.3 27.6

Total 44.4 38.5 135.5 112.5

Copper sales

Copper sold (million pounds) 39.6 39.8 131.9 108.1

Realized copper price ($/lb.) 4.15 3.13 4.35 2.75

C1 cash costs1 ($/lb.) produced

Pinto Valley 2.44 2.38 2.22 2.30

Cozamin 0.93 0.36 0.95 0.71

Consolidated 1.96 1.82 1.85 1.91

Consolidated

Q3 2021 production was 15% higher than Q3 2020 mainly as a result of record copper production at Cozamin driven

by maximizing mill throughput due to successful one-way ramp utilization and higher mine grades at both mines.

2021 YTD consolidated production of 135.5 million pounds of copper is on track with full year guidance of 175 to

190 million pounds of copper. The production results demonstrate a 20% growth compared to prior year,

benefiting from Cozamin achieving the new higher run rates (3,854 tpd) and benefits of PV3 Optimization projects

at Pinto Valley. The increase in production was the main driver for the $0.06 per payable pound decrease in C1

cash costs1 in 2021 YTD compared to 2020 YTD. 2021 YTD C1 cash costs1 are also on track with annual

guidance of $1.75 to $1.90 per payable pound.

Pinto Valley Mine

Q3 2021 production was higher than the same period last year primarily on higher grades Q3 2021 (0.33% versus

0.31% in Q3 2020) as a result of mine sequencing an d an increase in cut off grade to the mill, sending the lower

grade ore to leach. Pinto Valley production during Q3 2021 was lower than expected due to severe monsoon

rainstorms in July and August. Extreme wet conditions led to reduced mining and mill thro ughput rates while

lightning limited outdoor activities which prolonged the completion of scheduled maintenance work. In August,

record precipitation caused erosion of burnt terrain resulting in unprecedented floods and mud slides that affected

neighbouring communities in the Globe-Miami area. Pinto Valley workers were involved in emergency evacuation

and land remediation efforts, which altered work schedules during August. PV3 optimization work is now complete

and the mine achieved rates of 60,000 tpd in September and similar throughput rates in October.

Q3 2021 sales were impacted by buildup of copper conce ntrate inventory at Pinto Valley due to the strong

production levels in the month of September 2021.

Ramp up of production at the Molybdenum plant at Pinto Valley is progressing and expected to be completed during

Q4 2021, improving by-product credits.

2021 YTD production increased by 13% compared to the same period last year due to higher head grades for 2021

YTD (0.34% versus 0.30% in 2020 YTD) and improved flotation plant recovery performance (87.3% versus 84.5%

in 2020 YTD).

1 This is an alternative performance measure; please see "Alternative Performance Measures" at the end of this release.

C1 cash costs1 of $2.44 per payable pound in Q3 2021 were higher than Q3 2020 mainly due to lower capitalized

stripping costs of $0.11 per pound during the quarter ($2.4 million versus $5.1 million in Q3 2020) and lower by -

product credits on gold, partially offset by higher Q3 2021 production compared to Q3 2020.

A decrease in 2021 YTD C1 cash cost 1 by $0.08 per payable pound was primarily attributed to higher production

compared to the same period last year.

Cozamin Mine

Production in Q3 2021 was 33% higher than the same period last year and a record production quarter for Cozamin.

Higher copper production was primarily due to the successful utilization of the Calicanto one -way ramp which

increased mill rates from 3,090 tp d in Q3 2020 to 3,854 tpd in Q3 2021. In addition, with the optimized technical

report, the mine plan is delivering significantly higher mine grades (1.87% in Q3 2021 versus 1.77% in Q3 2020)

from the copper rich San Jose and Calicanto zones.

2021 YTD production increased by 42% compared to the same period last year mainly due to higher mill throughput

(3,678 tpd versus 2,903 tpd in 2020 YTD) and head grades (1.84% versus 1.65% in 2020 YTD).

C1 cash costs1 in Q3 2021 were higher than the same period last year due to $0.29 per payable pound impact of

the Cozamin Silver Stream with Wheaton Precious Metals Corp. (“Wheaton”) for 50% of the silver sales and higher

production cost attributed to higher operating development meters executed.

C1 cash costs1 in 2021 YTD were higher than the same period last year due to $0.30 per payable pound impact of

the Cozamin Silver Stream with Wheaton for 50% of the silver sales. The cost per payable pound impact of the

Cozamin Silver Stream was partially offset by higher production.

1 This is an alternative performance measure; please see "Alternative Performance Measures" at the end of this release.

Financial Overview

Refer to Capstone’s Q3 2021 MD&A and Financial Statements for detailed financial results.

September 30,

2021

December 31,

2020

Total assets ($ millions) 1,637.6 1,391.6

Long term debt (excluding financing fees) ($ millions) - 184.9

Total non-current financial liabilities ($ millions) 38.0 183.6

Total non-current liabilities ($ millions) 462.2 408.5

Cash and cash equivalents and short-term investments ($ millions) 208.2 60.0

Net cash/(debt)1 ($ millions) 208.2 (124.9)

2 2021 YTD includes $180.0 million silver and gold stream proceeds

($ millions, except per share data) Q3 2021 Q3 2020 2021 YTD 2020 YTD

Revenue 165400000 130500000 578900000 305600000

Net income (loss) 35000000 2300000 211500000 -15300000

Net income (loss) attributable to shareholders 35000000 2350000 185400000 -15067000

Net income (loss) attributable to shareholders per common share - basic ($) 0.09 0.01 0.46 -0.04

Net income (loss) attributable to shareholders per common share - diluted ($) 0.08 0.01 0.45 -0.04

Net income (loss) attributable to shareholders per common share - basic and diluted

($) basic =/= diluted 0.01 basic =/= diluted -0.04

Adjusted net income (loss)1 35300000 9500000 168400000 -8700000

Adjusted net income (loss) attributable to shareholders1 35300000 9500000 168400000 -8500000

Adjusted net income (loss) attributable to shareholders per common share - basic 0.09 0.0241394748568541 0.42 -0.0221421099193637

Adjusted net income (loss) attributable to shareholders per common share - diluted 0.09 0.0236029164200804 0.41 -0.0221421099193637

Adjusted net income (loss) attributable to shareholders per common share - basic

and diluted 0.09 0.0241394748568541 basic =/= diluted -0.0221421099193637

Adjusted EBITDA1 72300000 51600000 318900000 75700000

Cash flow from operating activities 70000000 27700000 458900000 79800000

Cash flow from operating activities pershare1 - basic ($) 0.17 0.07 1.13 0.2

Operating cash flow before changes in working capital12 67100000 44900000 451600000 65600000

Operating cash flow before changes in working capital per common share1 – basic

($) 0.16 0.11 1.11 0.17

Q3 2021 Q3 2020 2021 YTD 2020 YTD

Revenue ($ millions) 165.4 130.5 578.9 305.6

Net income (loss) ($ millions) 35.0 2.3 211.5 (15.3)

Net income (loss) attributable to shareholders

($ millions) 35.0 2.4 185.4 (15.1)

Net income (loss) attributable to shareholders per

common share – basic ($) 0.09 0.01 0.46 (0.04)

Net income (loss) attributable to shareholders per

common share – diluted ($) 0.08 0.01 0.45 (0.04)

Adjusted net income (loss)1 ($ millions) 35.3 9.5 168.4 (8.7)

Adjusted net income (loss) attributable to

shareholders1 ($ millions) 35.3 9.5 168.4 (8.5)

Adjusted net income (loss) attributable to

shareholders per common share – basic1($) 0.09 0.02 0.42 (0.02)

Adjusted net income (loss) attributable to

shareholders per common share – diluted1($) 0.09 0.02 0.41 (0.02)

Adjusted EBITDA1 ($ millions) 72.3 51.6 318.9 75.7

Cash flow from operating activities2 ($ millions) 70.0 27.7 458.9 79.8

Cash flow from operating activities per common

share1 - basic ($) 0.17 0.07 1.13 0.20

Operating cash flow before changes in working

capital1,2 ($ millions) 67.1 44.9 451.6 65.6

Operating cash flow before changes in working capital

per common share1 – basic ($) 0.16 0.11 1.11 0.17

1 This is an alternative performance measure; please see "Alternative Performance Measures" at the end of this release.

5

CORPORATE UPDATE

PV3 Optimization Update

PV3 Optimization Phase 1 work was completed in 2020. Phase 1 work included improved blast fragmentation

processes, installation of a new secondary crusher and screen decks as well as a new mill shell. As a result, Pinto

Valley was able to reliably achieve throughput of 57,000 tpd to 58,000 tpd in Q4 2020 and Q1 2021.

Phase 2 of the PV3 Optimization work was completed in Q3 2021. Capital was invested into tailings thickeners,

pumping upgrades and installation of a new ball mill shell. Phase 2 optimization work further enables the reliability

of higher throughput rates at Pinto Valley.

Total capital spent to date on Phase 1 and Phase 2 of PV 3 optimization tota lled $31 million which has enabled

10% increase in throughput to reliably deliver 58,000 tpd on an annualized basis with horsepower to run at 60,000

tpd or higher during peaks.

PV4 Study

Work progressed on the pre -feasibility study for PV4 to take advantage of approximately one billion tonnes of

Mineral Resource, not currently in the Mineral Reserve mine plan, which is at similar grade to the current Mineral

Reserves at Pinto Valley. The PV4 pre -feasibility study is expected t o be released in late 2022 and will focus on

utilizing existing mill infrastructure rather than building new to achieve higher mining and milling rates, higher cut -

off grades to the mill and increased tonnage available for leaching. Extensive column leach test work in collaboration

with Jetti Resources LLC (“Jetti”) has commenced and will continue through early 2022 and is being incorporated

into the pre-feasibility study. Jetti’s novel patented catalytic technology allows for the efficient and ef fective heap

and stockpile leach extraction of copper and has been a success at Pinto Valley’s leaching operations. In addition,

the PV4 study will look to incorporate Coarse Particle Flotation, which has demonstrated, in pilot trials, the potential

for increased recoveries by 6% to 8% while enabling higher throughput by operating at a coarser grind size and

providing options to improve water consumption and tailings management.

Pyrite Agglomeration

Pinto Valley is studying the potential to add a pyrite agglomeration circuit to the dump leach process. Currently, the

copper concentrate cleaner circuit tailings contain ~0.2% copper and significant pyrite mineral in a slurry containing

up to ~3,000 tpd solids. Study work, that will be included in the PV4 pre-feasibility study, is looking into the feasibility

of introducing this material into the heap leach dumps to produce numerous potential benefits including the

following:

1. Leaching the copper contained in a portion of the tailings stream for added copper recovery;

2. Oxidation of the pyrite generates free acid and would offset the requirement to purchase acid for leaching;

3. Diverting this material from tailings impoundment has ESG benefits from reduced water consumption and

a significant reduction in acid generating minerals reporting to tailings.

Santo Domingo Project

Following consolidation of Capstone’s 100% ownership of the Santo Domingo Project ("Santo Domingo" or “the

Project") in Region III, Chile during Q1 2021, the Company continued to advance the project on several fronts:

• There remains strong interest in Santo Domingo and discussions are advancing well . Santo Domingo is

currently the only fully permitted copper-iron project in Chile.

• With respect to the reduced initial capital estimate, the Company and its port partner, Puerto Ventanas, are

executing on early works in the framework agreement. In addition, the Company is advancing the analysis

of the pipeline versus rail capital trade -off in which the proposals replace the pipeline capital to become a

rail customer or a potential build, own, operate and transfer ("BOOT") contract on the pipeline. The end

result is expected to be a reduction in initial capital of up to $150 million.

• With respect to pot ential increases in the Chilean mining royalty tax, Santo Domingo is expected to be

protected given the fact the Company retains a foreign investment contract with the state of Chile, which

fell under the provisions of DL600. One of the benefits to the Company of this agreement is a tax invariability

system for a period of 15 years post commercial production.

1 This is an alternative performance measure; please see "Alternative Performance Measures" at the end of this release.

6

• The cobalt feasibility study focused in Q3 2021 on new drilling to obtain samples for extensive bench scale

testing that commenced during the quarter. The drilling delivered 7,600m of PQ core to be used as 140

individual samples for flotation -roast-leach flowsheet confirmation work and geometallurgical

characterization. In parallel, several industrial visits took place in July and August to operating facilities and

technology providers in Europe in order to gain insight on sulphide concentrate roast -leach facilities and

associated processing technologies. The drilling campaign is ongoing and now focused on generation of

sufficient sample mass for 2022 pilot scale testing of the cobalt recovery process.

• The first of a total of two stages of the cobalt feasibility engineering work, covering prefeasibility -level

activities, started in September and is expected to finalize in March 2022. The scope of work includes

parallel execution of different trade-off studies focused on various concentrate oxidation technologies and

different options for detailed production scheduling from a geological and mine planning perspective. The

engineering work also addresses all relevant ESG aspects early on to assure smooth integration of the

selected process route into the more developed copper and iron plant at Minera Santo Domingo. All work

is progressing with support of several global and highly qualified consultant and technology provid ers so

that delivery of the overall cobalt feasibility project, according to the earlier announced budget and schedule,

is assured.

Cost Control

Cost control strategy included few of the following actions taken by the Company. During 2020, financial hedges

were executed on foreign exchange rates to protect approximately half of the Company’s Mexican Peso exposure

from August 2020 through December 2021. The realized gain on the Mexican Peso zero cost collars was $2.0

million for the nine months ended September 30, 2021.

Pinto Valley fixed diesel prices with a supplier on its expected 2021 and 2022 diesel consumption at $1.76/gallon

and $2.13/gallon, respectively. The fixed diesel prices have resulted in cost savings of $1.4 million and $3.3 million

during the three and nine months ended September 30, 2021, respectively. At current prices is expected to yield

additional savings of approximately $5 million over the remainder of 2021 and 2022.

OUTLOOK – 2021 GUIDANCE

Capstone remains on track to produce between 175 and 190 million pounds of copper at C1 cash costs1 of between

$1.75 and $1.90 per pound payable copper produced.

Capital guidance has changed from the amount reported in the Company's MD&A dated July 27, 2021. Pinto Valley

capital guidance has decreased by $12 million ($7 million reduction in sustaining capital and $5 million reduction in

expansionary capital). Cozamin expansionary capital has increased by $7 million due to pre-ordering the filters for

dry stack tailings plant, no increase overall to the project.

CONFERENCE CALL AND WEBCAST DETAILS

Capstone will host a conference call and webcast on Wednesday, October 27, 2021 at 10:00 am PT/1:00 pm ET.

Link to the audio webcast:

https://produceredition.webcasts.com/starthere.jsp?ei=1505322&tp_key=98d4b26da7

Dial-in numbers for the audio -only portion of the conference call are below. Due to an increase in call volume,

please dial-in at least five minutes prior to the call to ensure placement into the conference line on time.

Toronto: (+1) 416-764-8650

Vancouver: (+1) 778-383-7413

North America toll free: 888-664-6383

Confirmation #06479965

A replay of the conference call will be available until November 3, 2021. Dial-in numbers for Toronto: (+1) 416-764-

8677 and North American toll free: 888-390-0541. The replay code is 479965#. Following the replay, an audio file

will be available on Capstone’s website at: https://capstonemining.com/investors/events-and-

presentations/default.aspx.

1 This is an alternative performance measure; please see "Alternative Performance Measures" at the end of this release.

7

This release is not suitable on a standalone basis for readers unfamiliar with Capstone and should be read in

conjunction with the Company’s MD&A and Financial Statements for the three and nine months ended September

30, 2021, which are available on Capstone’s website and on SEDAR, all of which have been reviewed and approved

by Capstone's Board of Directors.

ABOUT CAPSTONE MINING CORP.

Capstone Mining Corp. is a Canadian base metals mining company, focused on copper. We are committed to the

responsible development of our assets and the environments in which we operate. Our two producing mines are

the Pinto Valley copper mine located in Arizona, US and the Cozamin copper -silver mine in Zacatecas State,

Mexico. In addition, Capstone owns 100% of Santo Domingo, a large scale, fully permitted, copper-iron-gold project

in Region III, Chile, as well as a portfolio of exploration properties. Capstone's strategy is to focus on the optimization

of operations and assets in politically stable, mining -friendly regions, centred in the Americas. Our headquarters

are in Vancouver, Canada and we are listed on the Toronto Stock Exchange (TSX) under the symbol CS.

Further information is available at www.capstonemining.com.

For further information please contact:

Jerrold Annett, SVP, Strategy and Capital Markets

647-273-7351

[email protected]

Kettina Cordero, Director Investor Relations & Communications

604-262-9794

[email protected]

CAUTIONARY NOTE REGARDING FORWARD-LOOKING INFORMATION

This document may contain “forward-looking information” within the meaning of Canadian securities legislation and “forward-looking statements”

within the meaning of the United States Private Securities Litigation Reform Act of 1995 (collectively, “forward -looking statements”). These

forward-looking statements are made as of the date of this document and the Company do es not intend, and does not assume any obligation,

to update these forward-looking statements, except as required under applicable securities legislation.

Forward-looking statements relate to future events or future performance and reflect our expectations or beliefs regarding future events and the

impacts of the ongoing and evolving COVID -19 pandemic. Forward-looking statements include, but are not limited to, statements with respect

to the estimation of Mineral Resources and Mineral Reserves, the expected timing, operations and success of the underground paste backfill

system study and tailings filtration project at Cozamin , the outcome and timing of the PV4 study, the timing and success of our use of the Jetti

Technology, the successful execution of a port services agreement with Puerto Ventanas and/or rail agreement with Sigdo Kopper’s rail

business, the success of our strategic process for the Santo Domingo project, the expected reduction in capital requirements for the Santo

Domingo project, the timing and success of the Cobalt Study for Santo Domingo, the success of the PV3 Optimization project, the realization of

Mineral Reserve estimates, the timing and amount of estimated future production, costs of production and capital expenditures and reclamation,

the success of our mining operations, the success of mineral exploration, the estimations for potential quantities and grade of inferred resources

and exploration targets, C apstone’s ability to fund future exploration activities, Capstone’s ability to finance the Santo Domingo project,

Capstone's ability to find a strategic partner, environmental risks, unanticipated reclamation expenses and title disputes. The potential effects of

the COVID-19 pandemic on our business and operations are unknown at this time, including Capstone’s ability to manage challenges and

restrictions arising from COVID -19 in the communities in which Capstone operates and our ability to continue to safe ly operate and to safely

return our business to normal operations. The impact of COVID-19 to Capstone is dependent on a number of factors outside of our control and

knowledge, including the effectiveness of the measures taken by public health and governmental authorities to combat the spread of the disease,

global economic uncertainties and outlook due to the disease, and the evolving restrictions relating to mining activities and to travel in certain

jurisdictions in which we operate.

In certain cases, forward-looking statements can be identified by the use of words such as “anticipates”, “approximately”, “believes”, “budget”,

“estimates”, expects”, “forecasts”, “guidance”, intends”, “plans”, “scheduled”, “target”, or variations of such words and phr ases, or statements

that certain actions, events or results “be achieved”, “could”, “may”, “might”, “occur”, “should”, “will be taken” or “would” or the negative of these

terms or comparable terminology. In this document certain forward-looking statements are identified by words including “anticipated”, “expected”,

“guidance” and “plan”. By their very nature, forward -looking statements involve known and unknown risks, uncertainties and other factors that

may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements

expressed or implied by the forward-looking statements. Such factors include, amongst others, risks related to inherent hazards associated with

mining operations and closure of mining projects, future prices of copper and other metals, compliance with financial covenants, surety bonding,

our ability to raise capital, Capstone’s ability to acquire properties for growth, counterparty risks associated with sales o f our metals, use of

financial derivative instruments and associated counterparty risks, foreign currency exchange rate fluctuations, market acces s restrictions or

tariffs, changes in general economic conditions, availability of water, accuracy of Mineral Resource and Mineral Reserve estimates, operating

in foreign jurisdictions with risk of changes to governmental regulation, compliance with governmental regulations, complianc e with

environmental laws and regulations, reliance on approvals, licenses and permits from governmen tal authorities and potential legal challenges

to permit applications, contractual risks including but not limited to, our ability to meet the completion test requirements under the Cozamin Silver

1 This is an alternative performance measure; please see "Alternative Performance Measures" at the end of this release.

8

Stream Agreement with Wheaton Precious Metals, our ability to meet certain closing conditions under the Santo Domingo Gold Stream

Agreement with Wheaton Precious Metals, acting as Indemnitor for Minto Exploration Ltd.’s surety bond obligations post divest iture, impact of

climate change and changes to climatic conditions at our Pinto Valley and Cozamin operations and Santo Domingo project, changes in regulatory

requirements and policy related to climate change and greenhouse gas ("GHG") emissions, land reclamation and mine closure obligations, risks

relating to widespread epidemics or pandemic outbreak including the COVID-19 pandemic; the impact of COVID-19 on our workforce, suppliers

and other essential resources and what effect those impacts, if they occur, would have on our business, including our ability to access goods

and supplies, the ability to transport our products and impacts on employee productivity, the risks in connection with the op erations, cash flow

and results of Capstone relating to the unknown duration and impact of the COVID-19 pandemic, uncertainties and risks related to the potential

development of the Santo Domingo project, increased operating and capital costs, increased cost of reclamation, challenges to title to our

mineral properties, increased taxes in jurisdictions the Company operates or is subject to tax, changes in tax regimes we are subject to and any

changes in law or interpretation of law may be difficult to react to in an efficient manner, maintaining ongoing social licen se to operate,

dependence on key management personnel, potential conflicts of interest involving our directors and officers, corruption and bribery, limitations

inherent in our insurance coverage, labour relations, increasing energy prices, competition in the mining industry including but not limited to

competition for skilled labour, risks associated with joint venture partners, our ability to integrate new acquisitions and new tech nology into our

operations, cybersecurity threats, legal proceedings, the volatility of the price of the Common Shares, the uncerta inty of maintaining a liquid

trading market for the Common Shares, risks related to dilution to existing shareholders if stock options or other convertibl e securities are

exercised, the history of Capstone with respect to not paying dividends and anticipat ion of not paying dividends in the foreseeable future, and

sales of Common Shares by existing shareholders can reduce trading prices, and other risks of the mining industry as well as those factors

detailed from time to time in the Company’s interim and an nual financial statements and MD&A of those statements and Annual Information

Form, all of which are filed and available for review under the Company’s profile on SEDAR at www.sedar.com. Although the Com pany has

attempted to identify important factors that could cause our actual results, performance or achievements to differ materially from those described

in our forward -looking statements, there may be other factors that cause our results, performance or achievements not to be as anticipated,

estimated or intended. There can be no assurance that our forward -looking statements will prove to be accurate, as our actual results,

performance or achievements could differ materially from those anticipated in such statements. Accordingly, readers should no t place undue

reliance on our forward-looking statements.

CAUTIONARY NOTE TO UNITED STATES INVESTORS REGARDING PRESENTATION OF MINERAL RESERVE AND MINERAL

RESOURCE ESTIMATES

As a British Columbia corporation and a “reporting issuer” under Canadian securities laws, we are required to provide disclosure regarding our

mineral properties in accordance with Canadian National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”). NI 43-

101 is a rule developed by the Canadian Securities Administrators that establishes standards for all public disclosure an issuer makes of scientific

and technical information concerning mineral projects. In accordance with NI 43-101, we use the terms mineral reserves and resources as they

are defined in accordance with the CIM Definition Standards on mineral reserves and resources (the “CIM Definition Standards”) adopted by

the Canadian Institute of Mining, Metallurgy and Petroleum. In particular, the terms “mineral reserve”, “proven mineral reserve”, “probable mineral

reserve”, “mineral resource”, “measured mineral resource”, “indicated mineral resource” and “inferred mineral resource” used in this news

release and the documents incorporated by reference herein and therein, are Canadian mining terms defined in accordance with CIM Definition

Standards. These definitions differ from the definitions in the disclosure requirements promulgated by the SEC. Accordingly, information

contained in this news release and the documents incorporated by reference her ein may not be comparable to similar information made public

by U.S. companies reporting pursuant to SEC disclosure requirements.

United States investors are also cautioned that while the SEC will now recognize “measured mineral resources”, “indicated min eral resources”

and “inferred mineral resources”, investors should not assume that any part or all of the mineralization in these categories will ever be converted

into a higher category of mineral resources or into mineral reserves. Mineralization describe d using these terms has a greater amount of

uncertainty as to their existence and feasibility than mineralization that has been characterized as reserves. Accordingly, investors are cautioned

not to assume that any “measured mineral resources”, “indicated mineral resources”, or “inferred mineral resources” that we report are or will

be economically or legally mineable. Further, “inferred resources” have a greater amount of uncertainty as to their existence and as to whether

they can be mined legally or economically. Therefore, United States investors are also cautioned not to assume that all or any part of the inferred

resources exist. In accordance with Canadian rules, estimates of “inferred mineral resources” cannot form the basis of feasib ility or other

economic studies, except in limited circumstances where permitted under NI 43-101.

NATIONAL INSTRUMENT 43-101 COMPLIANCE

Unless otherwise indicated, Capstone has prepared the technical information in this news release (“Technical Information”) based on information

contained in the technical reports, Annual Information Form and news releases (collectively the “Disclosure Documents”) avail able under

Capstone Mining Corp.’s company profile on SEDAR at www.sedar.com. Each Disclosure Document was prepared by or under the supervision

of a qualified person (a “Qualified Person”) as defined in National Instrument 43 -101 – Standards of Disclosure for Mineral Projects of the

Canadian Securities Administrators (“NI 43 -101”). Readers are encouraged to review the full tex t of the Disclosure Documents which qualifies

the Technical Information. Readers are advised that Mineral Resources that are not Mineral Reserves do not have demonstrated economic

viability. The Disclosure Documents are each intended to be read as a whole, and sections should not be read or relied upon out of context. The

Technical Information is subject to the assumptions and qualifications contained in the Disclosure Documents.

Disclosure Documents include the National Instrument 43 -101 compliant technica l reports titled "NI 43 -101 Technical Report on the Cozamin

Mine, Zacatecas, Mexico" effective October 23, 2020, “Pinto Valley Mine Life Extension – Phase 3 (PV3) Pre-Feasibility Study” effective January

1, 2016 and “Santo Domingo Project, Region III, Chile, NI 43-101 Technical Report” effective February 19, 2020.

The disclosure of Scientific and Technical Information in this news release was reviewed and approved by Brad Mercer, P. Geol ., Senior Vice

President and Chief Operating Officer (technical information related to mineral exploration activities and to Mineral Resources at Cozamin), Clay

Craig, P.Eng, Manager, Mining & Evaluations (technical information related to Mineral Reserves and Mineral Resources at Pinto Valley), Tucker

Jensen, Superintendent Mine Operations, P.Eng (technical information related to Mineral Reserves at Cozamin) and Albert Garcia III, PE, Vice

President, Projects (technical information related to project updates at Santo Domingo) all Qualified Persons under NI 43 -101.