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Wheaton Precious Metals Announces the Acquisition of a Precious Metals Stream from Adventus Mining’S Curipamba Project

Financings Mergers & Acquisitions Royalties & Streams

January 17, 2022 TSX | NYSE | LSE: WPM

Vancouver, British Columbia

WHEATON PRECIOUS METALS ANNOUNCES THE ACQUISITION OF A

PRECIOUS METALS STREAM FROM ADVENTUS MINING’S CURIPAMBA

PROJECT

Wheaton Precious Metals™ Corp. (“Wheaton” or the “Company”) is pleased to announce

that its wholly -owned subsidiary, Wheaton Precious Metals International Ltd. ("Wheaton

International") has entered into a definitive Precious Metal Purchase Agreement ( the

“PMPA”) with Alliance Metals International, a subsidiary of Adventus Mining Corporation

(collectively “Adventus”) (TSX: ADZN) in respect to the Curipamba Project (“Curipamba” or

the “Project”) located in Ecuador. Curipamba is forecast to be a high-margin mine in the

lowest half of the copper cost curve with a 10-year open-pit mine life and the potential to

transition into an underground mine subsequent to the open pit1.

“Wheaton has had a successful long-term partnership with Adventus and welcomes the

opportunity to support the development of a project the caliber of Curipamba. Forecasted to

be a high quality, low -cost mine with significant exploration potential , Curipamba’s profile

aligns well with Wheaton’s accretive gr owth strategy” said Randy Smallwood, Wheaton’s

President and Chief Executive Officer. “Adventus has a strong entrepreneurial reputation and

shares Wheaton’s vision that responsible mining should benefit all stakeholders, including

support for the communities around the mines. We look forward to our continued partnership

with Adventus and shared success in Curipamba.”

TRANSACTION DETAILS

(All values in US$ unless otherwise noted)

▪ Upfront Consideration: Wheaton International will pay Adventus total upfront cash

consideration of $175.5 million (the “Deposit”), $13 million of which is available pre-

construction (the “Early Deposit”) and $500,000 of which will be paid to support certain

local community development initiatives around Curipamba. The remainder will be

payable in four staged installments during construction, subject to various customary

conditions being satisfied.

▪ Streamed Metal: Under the PMPA, Wheaton International will purchase: (i) 50% of

the payable gold production referenced from Curipamba, dropping to 33% for the life

of mine once 150,000 ounces of refined gold have been delivered; and (ii) 75% of the

payable silver production referenced from Curipamba, dropping to 50% for the life of

mine once 4.6 million ounces of refined silver have been delivered.

▪ Production Profile1: Attributable production is forecast to average 17,000 oz of gold

and 551,000 oz of silver per year for the first five years of production. Adventus

anticipates construction activities to begin as early as late 2022, with commissioning

and commencement of mine operations as early as 2024.

▪ Production Payments: Wheaton International will make ongoing payments for the

gold and silver ounces delivered equal to 18% of the spot prices (“Production

Payment”) until the value of gold and silver delivered less the Production Payment is

equal to the Deposit, at which point the Production Payment will increase to 22% of

the spot prices.

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▪ Incremental Reserves and Resources 2: The addition of Curipamba will increase

Wheaton’s estimated Proven and Prob able gold reserves by 0.26 Moz and silver

reserves by 7.1 Moz, Measured and Indicated gold resources by 0.06 Moz and silver

resources by 2.2 Moz, and Inferred gold resources by 0.02 Moz and silver resources

by 0.7 Moz. In addition, Wheaton believes significant exploration potential exists

within the large Curipamba property demonstrated by the recent discovery of the

Agua Santa prospect which is approximately 4.5 km southwest of El Domo.

▪ Community Investment Support: As part of the Deposit, Wheaton International has

agreed to provide $500,000 t o support local community development initiatives

around Curipamba being advanced by Adventus . In addition, by entering into the

PMPA, Adventus is eligible for additional community support through Wheaton’s

Partner CSR Program which provides financial support for its mining partners’

economic, environmental and social initiatives within the communities that are directly

influenced by the mines.

▪ Other Considerations:

o Curipamba will be subject to a 90 -day completion test based on a set mine

throughput level and designed production forecast.

o Until the first drawdown of the Deposit after the Early Deposit, Adventus would

have a one-time option to repurchase 33% of the stream (gold and silver) on

a change of control of Adventus for an amount ensuring a fixed internal rate

of return to Wheaton International.

o Adventus and certain of its subsidiaries will provide Wheaton International with

corporate guarantees and certain other security over their assets.

o Wheaton also intends to provide up to US$5M in equity to Adventus, subject

to a maximum ownership level below 10%.

FINANCING THE TRANSACTIONS

As at September 30, 2021, the Company had approximately $372 million of cash on hand ,

which when combined with the liquidity provided by the available credit under the $2 billion

revolving term loan and ongoing operating cash flows, positions the Company well to fund all

outstanding commitments and known contingencies and provides flexibility to acquire

additional accretive mineral stream interests.

ABOUT ADVENTUS MINING AND THE CURIPAMBA PROJECT

Adventus is a unique public company focused on copper-gold exploration and development

in Ecuador. Outside of Ecuador, Adventus also owns a portfolio of exploration projects in

Ireland that are funded by commercial partners and equity investments.

Curipamba comprises seven mineral concessions representing approximately 21,500

hectares and includes the advanced high-grade copper-gold El Domo deposit. Curipamba is

located in central Ecuador approximately 150 km northeast of the major port city of

Guayaquil. El Domo is a flat-lying tabular shaped VMS deposit, with mineralization beginning

at 30 metres from surface and dimensions of approximately 800 x 400 metres. Three well -

maintained gravel roads provide direct access to El Domo and most of the Curipamba project

area. Over 75,000 metres of diamond drilling has been completed on El Domo to date. In

2021, Adventus completed a feasibility study NI 43-101 Technical Report as well as

completed and submitted a detailed environmental and social impact assessment (ESI A)

report to the Government of Ecuador.

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Attributable Gold Mineral Reserves and Mineral Resources – CURIPAMBA

Category Tonnage

Mt

Grade

Au g/t

Contained

Au Moz

Proven 1.6 2.83 0.14

Probable 1.7 2.23 0.12

P&P 3.2 2.52 0.26

Measured 0.0 0.00 0.00

Indicated 1.1 1.63 0.06

M&I 1.1 1.63 0.06

Inferred 0.4 1.62 0.02

Attributable Silver Mineral Reserves and Mineral Resources – CURIPAMBA

Category Tonnage

Mt

Grade

Ag g/t

Contained

Ag Moz

Proven 2.4 41.4 3.1

Probable 2.5 49.7 4.0

P&P 4.9 45.7 7.1

Measured 0.0 0.0 0.0

Indicated 1.8 38.4 2.2

M&I 1.8 38.4 2.2

Inferred 0.7 31.6 0.7

Notes on Mineral Reserves & Mineral Resources:

1. All Mineral Reserves and Mineral Resources have been estimated in accordance with the 2014

Canadian Institute of Mining, Metallurgy and Petroleum (CIM) Standards for Mineral Resources and

Mineral Reserves and National Instrument 43-101 – Standards for Disclosure for Mineral Projects

(“NI 43-101”).

2. Mineral Reserves and Mineral Resources are reported above in millions of metric tonnes (“Mt”),

grams per metric tonne (“g/t”) and millions of ounces (“Moz”).

3. Qualified persons (“QPs”), as defined by the NI 43-101, for the technical information contained in this

document (including the Mineral Reserve and Mineral Resource estimates) are:

a. Neil Burns, M.Sc., P.Geo. (Vice President, Technical Services); and

b. Ryan Ulansky, M.A.Sc., P.Eng. (Vice President, Engineering),

both employees of the Company (the “Company’s QPs”).

4. The Mineral Resources reported in the above tables are exclusive of Mineral Reserves. Adventus

report Mineral Resources inclusive of Mineral Reserves. The Company’s QPs have made the

exclusive Mineral Resource estimates for the mine based on average mine recoveries and diluti on.

5. Mineral Resources, which are not Mineral Reserves, do not have demonstrated economic viability.

6. Curipamba Project Mineral Reserves are reported as of October 22, 2021and Mineral Resources as

of October 26, 2021.

7. Curipamba Project Mineral Reserves are reported above an NSR cut-off of $32.99 assuming $1,630

per ounce gold, $21 per ounce silver, $3.31 per pound copper, $0.92 per pound lead and $1.16 per

pound zinc.

8. Curipamba Project Mineral Resources are reported above an NSR cut-off of $29.00 per tonne for the

open pit and $105 per tonne for the underground assuming $1,800 per ounce gold, $24 per ounce

silver, $4.00 per pound copper, $1.05 per pound lead and $1.30 per pound zinc .

9. The Curipamba PMPA provides that Adventus will deliver 75% of the silver production until 4.6

million ounces are delivered and 50% thereafter for the life of the mine and 50% of the gold

production until 150 thousand ounces are delivered and 33% thereafter for the life of the mine.

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Attributable reserves and resources have been calculated on the 75% / 50% basis for silver and 50%

/ 33% basis for gold.

Neil Burns, P.Geo., Vice President, Technical Services for Wheaton Precious Metals and

Ryan Ulansky, P.Eng., Vice President, Engineering, are a “qualified person” as such term is

defined under National Instrument 43 -101, and have reviewed and approved the technical

information disclosed in this news release (specifically Mr. Burns has reviewed mineral

resource estimates and Mr. Ulansky has reviewed the mineral reserve estimates).

For further information, please contact:

Patrick Drouin

Investor Relations

Wheaton Precious Metals Corp.

Tel: 1-844-288-9878

Email: [email protected]

Website: www.wheatonpm.com

1) Please see “Cautionary Note Regarding Forward Looking-Statements” at the end of this news release for

material risks, assumptions, and important disclosure associated with this information. Based on report entitled

“National Instrument (NI) 43-101 Technical Report: Feasibility Study for the Curipamba El Domo Project, Central

Ecuador” with an effective date of October 26, 2021. Production forecasts contain forward looking information

and readers are cautioned that actual outcomes may vary. S&P data set for 2025 projected global cost curves.

2) Please refer to the Attributable Mineral Reserves & Mineral Resources table in this news release for full

disclosure of reserves and resources associated with Curipamba including accompanying footnotes.

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

This press release contains "forward-looking statements" within the meaning of the United States

Private Securities Litigation Reform Act of 1995 and "forward -looking information" within the

meaning of applicable Canadian securities legislation concerning the business, operations and

financial performance of Wheaton and, in some instances, the business, mining operations and

performance of Wheaton’s precious metals purchase agreement (“PMPA”) counterparties.

Forward-looking statements, which are all statements other than statements of historical fact,

include, but are not limited to, payment by Wheaton International of $175.5 million to Adventus

and the satisfaction of each party's obligations in accord ance with the Curipamba PMPA, the

receipt by Wheaton of silver and gold production in respect of Curipamba, the future price of

commodities, the estimation of future production from mineral stream interests owned by

Wheaton (the “Mining Operations”) (including in the estimation of production, mill throughput,

grades, recoveries and exploration potential), the estimation of mineral reserves and mineral

resources (including the estimation of reserve conversion rates) and the realization of such

estimations and the commencement, timing and achievement of construction, expansion or

improvement projects by Wheaton’s PMPA counterparties at Mining Operations. Generally, these

forward-looking statements can be identified by the use of forward -looking terminology such as

"plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates",

"forecasts", "projects", "intends", "anticipates" or "does not anticipate", or "believes", "potential",

or variations of such words and phrases or statements that certain actions, events or results

"may", "could", "would", "might" or "will be taken", "occur" or "be achieved". Forward-looking

statements are subject to known and unknown risks, uncertainties and other factors that may

cause the actual results, level of activity, performance or achievements of Wheaton to be

materially different from those expressed or implied by such forward-looking statements, including

but not limited to risks associated with any specific risks relating to the satisfaction of each party's

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obligations in accordance with the terms of the Curipamba PMPA, fluctuations in the price of

commodities (including Wheaton’s ability to sell its precious metals or cobalt production at

acceptable prices or at all), the Mining Operations (including fluctuations in the price of the primary

or other commodities mined at such operations, regulatory, polit ical and other risks of the

jurisdictions in which the Mining Operations are located, actual results of mining, risks associated

with the exploration, development, operating, expansion and improvement of the Mining

Operations, environmental and economic risks of the Mining Operations, and changes in project

parameters as plans continue to be refined), and other risks discussed in the section entitled

"Description of the Business – Risk Factors" in Wheaton's Annual Information Form available on

SEDAR at www.sedar.com, and in Wheaton's Form 40-F for the year ended December 31, 2020

and Form 6 -K filed March 11, 2021 both available on EDGAR at www.sec.gov, as well as the

risks set out in Whe aton’s management’s discussions and analysis for the period ended

December 31, 2020 available on SEDAR and EDGAR (together, the “Disclosure”). Forward -

looking statements are based on assumptions management currently believes to be reasonable,

including (without limitation): the payment of $17 5.5 million to Adventus and the satisfaction of

each party's obligations in accordance with the terms of the Curipamba PMPA, that there will be

no material adverse change in the market price of commodities, that the Min ing Operations will

continue to operate and the mining projects will be completed in accordance with public

statements and achieve their stated production estimates, that the mineral reserve and mineral

resource estimates from Mining Operations (including reserve conversion rates) are accurate,

and such other assumptions and factors as set out in the Disclosure. There can be no assurance

that forward-looking statements will prove to be accurate and even if events or results described

in the forward-looking statements are realized or substantially realized, there can be no assurance

that they will have the expected consequences to, or effects on, Wheaton. Readers should not

place undue reliance on forward-looking statements and are cautioned that actual outcomes may

vary. The forward -looking statements included herein are for the purpose of providing readers

with information to assist them in understanding Wheaton's expected financial and operational

performance and may not be appropriate for other purposes. A ny forward -looking statement

speaks only as of the date on which it is made, reflects Wheaton’s management’s current beliefs

based on current information and will not be updated except in accordance with applicable

securities laws. Although Wheaton has att empted to identify important factors that could cause

actual results, level of activity, performance or achievements to differ materially from those

contained in forward-looking statements, there may be other factors that cause results, level of

activity, performance or achievements not to be as anticipated, estimated or intended.

Cautionary Language Regarding Reserves And Resources

For further information on Mineral Reserves and Mineral Resources and on Wheaton more

generally, readers should refer to Whe aton’s Annual Information Form for the year ended

December 31, 2020 and other continuous disclosure documents filed by Wheaton since January

1, 2021, available on SEDAR at www.sedar.com. Wheaton’s Mineral Reserves and Mineral

Resources are subject to the qualifications and notes set forth therein. Mineral Resources which

are not Mineral Reserves do not have demonstrated economic viability.

Cautionary Note to United States Investors Concerning Estimates of Measured, Indicated

and Inferred Resources: The information contained herein has been prepared in accordance

with the requirements of the securities laws in effect in Canada, which differ from the

requirements of United States securities laws. The terms "mineral reserve", "proven mineral

reserve" and "probable mineral reserve" are Canadian mining terms defined in accordance

with Canadian National Instrument 43-101 – Standards of Disclosure for Mineral Projects ("NI

43-101") and the Canadian Institute of Mining, Metallurgy and Petroleum (the "CIM") – CIM

Definition Standards on Mineral Resources and Mineral Reserves, adopted by the CIM

Council, as amended (the "CIM Standards"). In addition, the terms "mineral resource",

"measured mineral resource", "indicated mineral resource" and "inferred mineral resource"

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are defined in and required to be disclosed by NI 43 -101. Investors are cautioned not to

assume that any part or all of the mineral deposits in these categories will ever be converted

into reserves. "Inferred mineral resources" have a great amount of uncer tainty as to their

existence and as to their economic and legal feasibility. It cannot be assumed that all or any

part of an inferred mineral resource will ever be upgraded to a higher category. Under

Canadian rules, estimates of inferred mineral resources may not form the basis of feasibility

or pre-feasibility studies, except in rare cases. Investors are cautioned not to assume that all

or any part of an inferred mineral resource exists or is economically or legally mineable.

Mineral resources that are not mineral reserves do not have demonstrated economic viability.

Disclosure of "contained ounces" in a resource is permitted disclosure under Canadian

regulations. The SEC has adopted amendments to its disclosure rules to modernize the

mineral property disclosure requirements for issuers whose securities are registered with the

SEC under the U.S. Securities Exchange Act of 1934, as amended (the “Exchange Act”).

These amendments became effective February 25, 2019 (the “SEC Modernization Rules”)

with compliance required for the first fiscal year beginning on or after January 1, 2021. Under

the SEC Modernization Rules, the historical property disclosure requirements for mining

registrants included in SEC Industry Guide 7 will be rescinded and replaced with discl osure

requirements in subpart 1300 of SEC Regulation S -K. Following the transition period, as a

foreign private issuer that is eligible to file reports with the SEC pursuant to the multi -

jurisdictional disclosure system, the Company is not required to prov ide disclosure on its

mineral properties under the SEC Modernization Rules and will continue to provide disclosure

under NI 43-101. As a result of the adoption of the SEC Modernization Rules, the SEC will

recognize estimates of “measured mineral resources ”, “indicated mineral resources” and

“inferred mineral resources.” In addition, the SEC has amended its definitions of “proven

mineral reserves” and “probable mineral reserves” to be “substantially similar” to the

corresponding definitions under the CIM Definition Standards that are required under NI 43-

101. However, while the above terms are “substantially similar” to CIM Definition Standards,

there are differences in the definitions under the SEC Modernization Rules and the CIM

Definition Standards. Accor dingly, there is no assurance any mineral reserves or mineral

resources that the Company may report as “proven mineral reserves”, “probable mineral

reserves”, “measured mineral resources”, “indicated mineral resources” and “inferred mineral

resources” under NI 43-101 would be the same had the Company prepared the reserve or

resource estimates under the standards adopted under the SEC Modernization Rules.

Accordingly, information contained herein that describes Wheaton’s mineral deposits may

not be comparable to similar information made public by U.S. companies subject to reporting

and disclosure requirements under the United States federal securities laws and the rules

and regulations thereunder. United States investors are urged to consider closely the

disclosure in Wheaton’s Form 40-F, a copy of which may be obtained from Wheaton or from

https://www.sec.gov/edgar.shtml.