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 US$150 million to Capstone and the satisfaction of each party's obligations in accordance with the Precious Metal Stream agreement, the receipt by Wheaton International of silver production in respect of the Cozamin Mine, 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 obligations in accordance with the terms of the Precious Metals Stream agreement, 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, political 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, 2019 and Form 6-K filed March 11, 2020 both available on EDGAR at www.sec.gov , as well as the risks set out in Wheaton's management's discussions and analysis for the periods ended March 31, 2020 and September 30, 2020 both 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 US$150 million to Capstone and the satisfaction of each party's obligations in accordance with the terms of the Precious Metal Stream agreement, that there will be no material adverse change in the market price of commodities, that the Mining 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. Any 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 attempted 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 Wheaton's Disclosure. 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"). These definitions differ from the definitions in Industry Guide 7 ("SEC Industry Guide 7") under the U.S. Securities Act of 1933, as amended (the "U.S. Securities Act"). Under U.S. standards, mineralization may not be classified as a "reserve" unless the determination has been made that the mineralization could be economically and legally produced or extracted at the time the reserve determination is made. Also, under SEC Industry Guide 7 standards, a "final" or "bankable" feasibility study is required to report reserves, the three-year historical average price is used in any reserve or cash flow analysis to designate reserves and the primary environmental analysis or report must be filed with the appropriate governmental authority. In addition, the terms "mineral resource", "measured mineral resource", "indicated mineral resource" and "inferred mineral resource" are defined in and required to be disclosed by NI 43-101; however, these terms are not defined terms under SEC Industry Guide 7 and are normally not permitted to be used in reports and registration statements filed with the SEC. 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 uncertainty 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; however, the SEC normally only permits issuers to report mineralization that does not constitute "reserves" by SEC standards as in place tonnage and grade without reference to unit measures. 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 EDGAR at www.sec.gov.

[1] ) Wood Mackenzie Ltd. Data set 2020 Q3.

[2] ) Please refer to the Mineral Reserves & Mineral Resources table in this news release for full disclosure of reserves and resources associated with Cozamin including accompanying footnotes.

[3] ) Production estimates based upon the report titled "NI 43-101 Technical Report on the Cozamin Mine, Zacatecas, Mexico" prepared for Capstone Mining and dated October 23, 2020. Production forecasts contain forward looking information and readers are cautioned that actual outcomes may vary. 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.

[4] ) Operating cash flow based on Q1 2019, and Q1, Q2 and Q3 of 2020.

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