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CS.TO ·

1. This is an alternative performance measure; please refer to the "Alternative Performance Measures" section of the Company’s

Corporate Updates

1. This is an alternative performance measure; please refer to the "Alternative Performance Measures" section of the Company’s

MD&A for the three and twelve months ended December 31, 2021.

1

February 15, 2022

Capstone Generates Record Net Income in 2021 and Increases Net Cash1 to $264.4 Million

(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 quarter (“Q4 2021”) and full year (“FY 2021”) ended December 31, 2021.

Quarterly consolidated copper production totaled 51.6 million pounds at C1 cash costs1 of $1.72 per payable pound

of copper produced. Annual consolidated copper production totaled 187.1 million pounds at C1 cash costs1 of $1.81

per payable pound of copper produced. Link HERE for Capstone’s Q4 2021 management’s discussion and analysis

(“MD&A”) and financial statements and HERE for the webcast presentation.

Darren Pylot, CEO of Capstone , commented, “Our investments in optimization and expansion over the past two

years have allowed us to take advantage of robust copper prices, positioning us now with a large net cash balance

sheet ahead of a period of transformational growth.” Mr. Pylot continued, “We announced the upcoming business

combination with Mantos Copper on November 30th. After the special meeting of the shareholders on February 28th,

we look forward to building on the strengths of both organizations as we create Capstone Copper, a Canadian

copper champion that will deliver leading growth in our sector. We remain committed to strengthening communities

and building resilient long-life operations.”

Q4 2021 AND 2021 OPERATIONAL & FINANCIAL HIGHLIGHTS

• Record net income of $252.9 million, or $0.56 per share for 2021 and net income of $41.4 million, or

$0.10 per share for Q4 2021. Adjusted net income 1 of $241.6 million or $0.60 per share for 2021, and

$73.2 million or $0.18 per share for Q4 2021 ; main reconciling item for Q4 2021 was share based

compensation expense.

• Record Adjusted EBITDA1 of $432.2 million for 2021 and $113.3 million for Q4 2021. The increase in

adjusted EBITDA1 is reflective of Capstone’s 19% growth in production and strong operational performance

and financial leverage in a robust copper price environment.

• Record Operating cash flow before changes in working capital 1 of $556.3 million in 2021 and

$104.9 million in Q4 2021 driven by strong revenue in a plus $4.40 price copper environment. Included in

2021 Operating cash flow is the receipt of the $150.0 million upfront payment for the Cozamin Silver Stream

and $30.0 million upfront payment for the Santo Domingo Gold Stream Agreement.

• Cash and short term investments grew by $56.2 million during the three months ending December

31, 2021 and by $389.3 million during 2021 to $264.4 million. The Company's total available liquidity 1

was $489.4 million with nil long term debt. The balance sheet was further enhanced by continued strong

operating cash flow generation during Q4 2021.

• Consolidated copper production of 51.6 million pounds at C1 cash costs 1 of $1.72 per payable

pound of copper produced for Q4 2021. Full year guidance achieved with consolidated copper production

for 2021 of 187.1 million pounds at C1 cash costs1 of $1.81 per payable pound of copper produced.

• Cozamin Mine achieved another record quarterly copper production of 14.5 million pounds at $0.99

per payable pound of copper produced for Q4 2021. Q4 2021 production was 41% higher than in Q4

2020 following commissioning of the Calicanto one-way ramp in Q1 2021.

• Pinto Valley Mine produced 37.1 million pounds at $2.00 per payable pound of copper for Q4 2021.

The mine's processing plant achieved rates of approximately 58,500 tonnes per day (“tpd”) in Q4 2021

following completion of Phase 2 of PV3 Optimization.

• Capstone announced the Transaction to combine with Mantos Copper (Bermuda) Limited

(“Mantos”) to create Capstone Copper Corp. The Transaction will establish Capstone Copper Corp. as

a premier copper producer with a diversified portfolio of high -quality, long-life operating assets focused in

the Americas with an extensive pipeline of near -term fully -permitted organic growth opportunities.

Completion of the Transaction is expected in March or April 2022.

NEWS RELEASE

TSX:CS ● capstonemining.com

2

Operational Overview

Refer to Capstone’s Q4 2021 and FY 2021 MD&A and Financial Statements for detailed operating results.

Q4 2021 Q4 2020 FY 2021 FY 2020

Copper production (million pounds)

Pinto Valley 37.1 34.1 133.3 119.0

Cozamin 14.5 10.3 53.8 37.9

Total 51.6 44.4 187.1 156.9

Copper sales

Copper sold (million pounds) 46.8 39.3 178.7 147.4

Realized copper price ($/pound) 4.61 3.64 4.42 2.99

C1 cash costs1 ($/pound) produced

Pinto Valley 2.00 2.00 2.16 2.21

Cozamin 0.99 0.63 0.96 0.69

Consolidated 1.72 1.68 1.81 1.84

Consolidated

Q4 2021 production was 16% higher than Q4 2020 mainly as a result of higher mine grades at both mines plus

record copper production at Cozamin driven by the mine expansion related to the completion of the new one -way

ramp at the end of 2020.

2021 consolidated production of 187.1 million pounds of copper is at the upper end of the full year guidance of 175

to 190 million pounds of copper. The production results reflect a 19% increase compared to prior year, benefiting

from Cozamin achieving the higher mill rates (3,800 tpd) and benefits of the PV3 Optimization projects at Pinto

Valley. The increase in production was the main driver for the $0.03 per payable pound of copper decrease in C1

cash costs1 in 2021 compared to 2020, offset by $0.09/lb related to the Cozamin silver stream, thus overall pre -

stream the C1 cash costs1 were $0.12/lb lower than 2020. 2021 YTD C1 cash costs1 are within annual guidance of

$1.75 to $1.90 per payable pound of copper.

Pinto Valley Mine

Q4 2021 production was higher than the same period last year primarily on higher grades for Q4 2021 (0.37%

versus 0.31% in Q4 2020) as a result of mine sequencing and an increase in cut off grade to the mill, sending the

lower grade ore to leach, partially offset by lower recoveries in Q4 2021 compared to Q4 2020.

2021 production increased by 12% compared to the same period last year due to higher head grades for 2021

(0.35% versus 0.30% in 2020) and improved flotation plant recovery performance (85.7% versus 85.0% in 2020).

C1 cash costs1 of $2.00 per payable pound of copper in Q4 2021 were consistent with the same period last year.

Lower capitalized stripping costs of $0.12 per pound during the quarter ($0.2 million versus $4.1 million in Q4 2020)

were fully offset by higher Q4 2021 production compared to Q4 2020.

A decrease in 2021 C1 cash cost 1 by $0.05 per payable pound of copper was primarily attributed to higher

production compared to the same period last year.

Cozamin Mine

Production in Q4 2021 was 41% higher than the same period last year and another 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, 086 tpd in Q4 2020 to 3,863 tpd in Q4 2021. In addition, with the optimized

technical report mine plan, the mine is delivering significantly higher mine grades (1.92% in Q4 2021 versus 1.72%

in Q4 2020) from the copper rich San Jose and Calicanto zones.

3

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

(3,724 tpd versus 2,949 tpd in 2020 YTD) and head grades (1.86% versus 1.67% in 2020).

C1 cash costs1 in Q4 2021 were higher than the same period la st year due to $0.29 per payable pound of copper

impact of the Cozamin silver stream with Wheaton for 50% of the silver sales and higher production costs attributed

to higher operating development meters executed.

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

4

Financial Overview

Refer to Capstone’s Q4 2021 and FY 2021 MD&A and Financial Statements for detailed financial results.

December 31,

2021

December 31,

2020

Total assets ($ millions) 1,728.0 1,391.6

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

Total non-current financial liabilities ($ millions) 38.4 183.6

Total non-current liabilities ($ millions) 481.3 408.5

Cash and cash equivalents and short-term investments ($ millions) 264.4 60.0

Net cash/(debt)1 ($ millions) 264.4 (124.9)

($ 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 opting activities pershare1 - basic ($) 0.17 0.07 1.13 0.2

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

before changes in working capital12 67100000 44900000 451600000 65600000

Q4 2021 Q4 2020 FY 2021 FY 2020

Revenue ($ millions) 215.9 148.1 794.8 453.8

Net income ($ millions) 41.4 27.6 252.9 12.4

Net income attributable to shareholders ($ millions) 41.4 27.6 226.8 12.6

Net income attributable to shareholders per common

share – basic ($) 0.10 0.07 0.56 0.03

Net income attributable to shareholders per common

share – diluted ($) 0.10 0.07 0.55 0.03

Adjusted net income1 ($ millions) 73.2 35.6 241.6 26.4

Adjusted net income attributable to shareholders1

($ millions) 73.2 35.6 242.1 26.4

Adjusted net income attributable to shareholders per

common share – basic1($) 0.18 0.09 0.60 0.07

Adjusted net income attributable to shareholders per

common share – diluted1($) 0.18 0.09 0.58 0.07

Adjusted EBITDA1 ($ millions) 113.3 63.5 432.2 139.2

Cash flow from operating activities2 ($ millions) 94.5 67.4 553.3 147.2

Cash flow from operating activities per common

share1 - basic ($) 0.23 0.17 1.36 0.37

Operating cash flow before changes in working

capital1,2 ($ millions) 104.9 65.3 556.3 131.2

Operating cash flow before changes in working capital

per common share1 – basic ($) 0.26 0.16 1.37 0.33

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

5

CORPORATE UPDATE

Mantos Transaction

On November 30, 2021, the Company announced it had entered into a definitive agreement (the "Agreement") with

Mantos to combine, pursuant to a plan of arrangement (the “Transaction”). Mantos is a copper-producing company

that, through its subsidiaries, is engaged in the exploration, development, extraction, and processing of sulphide

and oxide ores, and the production and sale of London Market Exchange Grade “A” copper cathodes and clean

copper concentrates, with gold and silver by-products from its mining assets. Mantos Copper currently operates the

open pit copper mines and processing plants of Mantos Blancos, located forty -five kilometers northeast of

Antofagasta, and Mantoverde, located fifty kilometers southeast of Chañaral, in the region of Atacama.

The Transaction will require the approval of at least 66 2/3% of the votes cast by the shareholders of Capstone

voting at a special meeting of shareholders to be held on February 28th, 2022. Officers and directors of Capstone,

along with Capstone’s largest shareholder, have entered into support and voting agreements, agreeing to vote their

shares in favour of the Transaction (representing approximately 26.5% of the issued and outstanding common

shares of Capstone). T he management information circular dated J anuary 27th, 2022 has been posted to the

Company’s website and filed on its profile on SEDAR.

Institutional Shareholder Services (“ISS”) and Glass Lewis (“GL”), two leading independent third party proxy

advisory firms, have recommended that shareholders vote FOR the proposed business combination with Mantos.

ISS and GL, among other services, provide proxy-voting recommendations to pension funds, investment managers,

mutual funds and other institutional shareholders.

In its report, ISS stated, “The arrangement makes strategic sense as the combined company will possess a

diversified collection of long-life operating assets, planned and fully financed copper production growth of 45% by

2024, and material production growth opportunities represented by the Santo Domingo project as well as expansion

projects across the combined company asset portfolio.”

Glass Lewis’ report noted, “We ultimately believe the board and special committee established a sound basis upon

which to conclude the proposed transaction represents an attractive opportunity for the Company and its

shareholders. The merger will result in a larger, more diversified copper producer with an opportunity to achieve

meaningful synergies.”

Upon completion of the Transacti on, the combined company is expected to be renamed Capstone Copper Corp.

("Capstone Copper"). Capstone Copper will remain headquartered in Vancouver, B.C. and has received conditional

approval to be listed on the TSX. Pursuant to the Agreement, each Capsto ne shareholder will receive 1 newly

issued Capstone Copper share per Capstone share (the "Exchange Ratio") and the existing Mantos shareholders

will continue to hold Capstone Copper shares. Upon completion of the Transaction, former Capstone and Mantos

shareholders will collectively own approximately 60.75% and 39.25% of Capstone Copper, respectively, on a fully-

diluted basis. The Transaction is subject to certain regulatory approvals, consents from certain third parties and

other customary closing conditions for a transaction of this nature, including approvals by the security holders, the

TSX and the Supreme Court of British Columbia. The Agreement includes a non -solicitation provision, a right to

match a superior proposal and a C$75 million termination fee payable in certain circumstances. Completion of the

Transaction is expected in March or April 2022.

Subject to shareholder approval and the satisfaction of all other conditions, the Transaction is anticipated to close

in March or April 2022.

PV3 Optimization Completed

PV3 Optimization work was completed in Q3 2021. The $31 million two year program involved investments in the

fine crushing plant, two new ball mill shells, tailings thickeners, and tailings pumping upgrades. The optimization

work has enabled the reliability of higher throughput rates at Pinto Valley from 51,000 tpd average in 2019 to over

58,000 tpd average in Q4 2021.

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

6

PV4 Study

During 2021, the study work progressed on the pre -feasibility study ("PFS") for PV4 which aims to maximize the

conversion of approximately one billion tonnes of mineral resources to mineral reserves, significantly extending

Pinto Valley’s mine life and inc reasing the mine’s copper production profile. The application of the following new

technologies and innovation is being considered:

• Expansion of the use of Jetti Catalytic Leach Technology which has the potential to increase mill cut -off-

grades and increase tonnage available for leaching. Column leach testing is ongoing through H1 2022 and

results will be included in the PV4 Study.

• Pyrite Agglomeration has strong Environmental, Social and Governance ("ESG") implications as it will divert

acid-generating m inerals including pyrite and chalcopyrite from tailings to the dump leach operation.

Additional copper recovery and lower costs via self–generation of free acid are also key economic drivers

for this project. The project’s initiation is targeted for H2 202 2 subject to board approval. Based on

preliminary study results, the project is expected to require a low capex with a short payback period.

Higher mill throughput will be considered targeting up to 65,000 to 70,000 tpd. Key areas of investment include

upgrades to ball mill motors, grinding circuit cyclones, and improvements to the rougher flotation circuit and

evaluation of coarse particle flotation. A low capital strategy is currently under review to improve coarse particle

recovery with some modest inv estment in the current conventional flotation circuit. An expanded dump leach

strategy would translate to higher grades sent to the mill for processing and increased copper cathode production

by expanding dump leach tonnage.

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:

• With respect to the reduced initial capital estimate, the Company and its port partner, Puerto Abierto, S.A.,

a subsidiary of Puerto Ventanas, S.A., 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. This work is now being done in conjunction

with the Mantoverde synergies analysis discussed below.

• With respect to the proposed Transaction with Mantos, scoping level work is being performed by the Santo

Domingo and Mantos teams starting in late Q4 2021 to identify and refine potential synergies between the

Santo Domingo Project with the Mantoverde mine (owned 70% by Mantos). Santo Domingo is situated ~35

kilometres northeast of the Mantoverde mine; significant potential opportunities exist for:

o Infrastructure sharing (including power, water, pipelines, port),

o Transportation synergies for concentrates,

o Potential enabling of product lines (additional iron and cobalt production from Mantoverde,

processing oxide ore from Santo Domingo),

o Potential integrated operating approach, and

o Construction synergies (including project teams and camp).

• With respect to potential increases in the Chile an mining royalty tax, Santo Domingo is expected to be

protected given 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.

• Cobalt Feasibility Update: The drilling program from Q3 and Q4 of 2021 generated 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 pre -feasibility level activities, started in September 2021 and is

expected to finalize in March 2022. The proposed cobalt recovery process takes advantage of a tailings

side-stream containing pyrite laden with ~0.6% cobalt, which will be recovered through a conventional

flowsheet. The concentrate will be sent to pyrite roasting and solvent extraction followed by crystallization

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

7

to produce battery grade cobalt sulphate heptahydrate. At an expe cted 10.4 million pounds of cobalt

production per year, this will be one of the largest and lowest cost cobalt producers in the world at C1 cash

costs1 of minus $4 per pound. Additional benefits of this project include the production of by -product

sulphuric acid from the pyrite roasting process, which can be used for heap or dump leaching to produce

low-cost copper cathodes at Santo Domingo, Mantoverde, and elsewhere in the district.

Corporate Exploration Update

Cozamin exploration: The focus during Q4 2021 was on testing the Mala Noche Footwall Zone and Mala Noche

Main Vein West Target with three surface rigs, along with the in-parallel development of the west exploration drift

and crosscuts which will allow more efficient testing of the target from underground once completed in early 2022.

One additional surface rig tested other brownfield targets on the property.

Copper Cities, Arizona: On January 20, 2022, Capstone announced that it had entered into an 18-month access

agreement with BHP Copper Inc. ("BHP") to conduct drill and metallurgical test-work at BHP's Copper Cities project

("Copper Cities"), located ~10 km east of the Pinto Valley Mine. In 2022, Capstone plans to spend $6.7 million in a

two-phase drill program aimed at twinning historical dri ll holes and to select a portion of these for metallurgical

testing.

Planalto, Brazil: Step-out drilling at the Planalto Iron Ore-Copper-Gold prospect in Brazil, under Earn In

agreement with Lara Exploration Ltd., commenced in Q4 2021 and will continue into 2022. Lara Exploration Ltd. is

expected to report results when appropriate.

Capstone Copper 2022 Catalysts

The following chart demonstrates key catalysts this year and assumes the completion of the combination with

Mantos Copper by the end of Q1 2022. Of note, Capstone Copper's ESG Vision and Objectives will be rolled out in

Q2 2022. The Mantoverde-Santo Domingo synergies study & integration plan is expected in September and will be

followed by a site visit and investor day for institutional investors and analysts.

At Pinto Valley, the PV4 prefeasibility study is expected to be released by year -end and at San to Domingo, the

updated feasibility and mine plan including the cobalt feasibility study is also expected to be released in Q4 2022.

At Cozamin, the paste backfill and dry stack tailings plant is expected to be commissioning by the end of 2022.

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

8

2022 PRODUCTION AND COST GUIDANCE

In 2022, Capstone Mining expects to produce between 82,000 and 90,000 tonnes of copper at C1 cash costs 1 of

between $1.85 and $2.00 per pound payable copper produced from the Pinto Valley and Cozamin mines.

Our cost control strategy included the following actions:

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 $2.6 million for the twelve months ended December 31, 2021. In November 2021,

additional financial hedges were executed for approximate 75% of the Mexican Peso and Chilean Peso operating

and capital cost exposure at the Cozamin mine and at Santo Domingo, respectively. The Mexican Peso collars

have a floor of 20 and a cap of 24.75 Mexican Pesos to the US dollar, and the Chilean Peso collars have a floor of

750 and a cap of 931 and 939 Chilean Pesos to the US dollar.

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 $3.0 million and $6.3 million

during the three months and year ended December 31, 2021, respectively. At current prices the price fixing is

expected to yield additional savings of approximately $4.5 million during 2022.

CONFERENCE CALL AND WEBCAST DETAILS

Capstone will host a conference call and webcast on Wednesday, February 16, 2022 at 08:30 am PT/11:30 am ET.

Link to the audio webcast:

https://produceredition.webcasts.com/starthere.jsp?ei=1524721&tp_key=1dedc36dcb

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 #50217755

A replay of the conference call will be available until March 2, 2022. Dial-in numbers for Toronto: (+1) 416-764-8677

and North American toll free: 888-390-0541. The replay code is 217755#. Following the replay, an audio file will be

available on Capstone’s website at: https://capstonemining.com/investors/events-and-presentations/default.aspx.

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 twelve months ended December

31, 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.

On November 30, 2021, Capstone Mining and Mantos Copper announced that they have entered into a definitive

agreement to combine pursuant to a plan of arrangement under the Business Corporations Act (British Columbia).

Upon completion of the Transaction, the new Company would be renamed Capstone Copper Corp. (Capstone

Copper).

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.