Endeavour Silver Announces Q1 2023 Financial Results; Earnings Call at 10AM PDT (1PM EDT) Today

VANCOUVER, May 10, 2023 - Endeavour Silver Corp. ("Endeavour" or the "Company") (NYSE: EXK; TSX: EDR) is pleased to announce its financial and operating results for the three months ended March 31, 2023. All dollar amounts are in US dollars (US$).

"We are pleased to report a solid start this year with consolidated production expected to meet full year guidance," stated Dan Dickson, CEO of Endeavour Silver. "Guanacevi continues to perform well, generating strong operating cash flow which we are reinvesting in the business. Industry-wide inflation pressures continue to persist, which combined with a strengthening Mexican Peso, are increasing our operating costs. We are working to manage our inputs in order to offset these cost pressures as we pursue productivity and efficiency initiatives.

Added Mr. Dickson, "On April 18, 2023, we reached a key milestone with the announcement of the project financing commitment of $120 million and a subsequent formal construction decision at Terronera. The successful execution of this underground mine development and mill is integral to achieving our growth goal to nearly double our production by 2025 and transform our cost profile. With a seasoned team of development personnel, we are moving forward confidently and look forward to establishing an exciting future for our stakeholders."

Q1 2023 Highlights

• Production Tracking Towards Upper Range of Guidance: 1,623,545 ounces (oz) of silver and 9,342 oz of gold for 2.4 million oz silver equivalent (AgEq)⁽¹⁾.
• Revenue: $55.5 million from the sale of 1,667,408 oz of silver and 9,126 oz of gold at average realized prices of $23.16 per oz silver and $1,917 per oz gold.
• Reduced Earnings Due to Lower Realized Prices: $6.5 million, or $0.03 per share, down 45% from Q1 2022. Earnings Before Interest, Taxes, Depreciation & Amortization (EBITDA)⁽²⁾ of $19.4 million, a decrease of 24% from Q1 2022.
• Cash Flow: $12.5 million in operating cash flow before working capital changes⁽²⁾, a decrease of 39% from Q1 2022. Mine operating cash flow before taxes⁽²⁾ also decreased to $22.4 million.
• Higher Costs Due to Strengthened Peso and Industry-Wide Inflation: Cash costs⁽²⁾ of $11.12 per oz payable silver and all-in sustaining costs⁽²⁾ of $20.16 per oz payable silver, net of gold credits. Cash costs⁽²⁾ were slightly above guidance due to a strengthening of the Mexican Peso and increased labour, power and consumables costs. Management continues to work diligently to reduce costs and improve efficiencies where possible.
• Healthy Balance Sheet: Cash position of $61.6 million and working capital⁽²⁾ of $92.8 million. Cash decreased as funds were spent on development activities at Terronera.

Subsequent to Q1 2023

• Company Secures Project Financing and Updates Development Plans for Terronera: Societe Generale and ING Bank N.V. have entered into a commitment letter for a Senior Secured Debt Facility of $120 million. The Company has optimized the project's operating flexibility from the NI 43-101 Feasibility Study of the Terronera Project filed in 2021. The Revised scenario approves the construction of a 2,000 tpd process plant with an initial capital expenditure of $230 million (see news release dated April 18, 2023).
• Terronera De-risked with over $58 million Invested to date into Development: The Board of Directors has approved the construction of an underground mine and mill at Terronera. The Company has made significant progress on development activities, with long-lead item procurement well advanced and a seasoned team of development personnel established on the ground (see news release dated April 20, 2023).

Financial Overview (see appendix for consolidated financial statements)

⁽¹⁾ Silver equivalent (AgEq) is calculated using an 80:1 silver:gold ratio.

⁽²⁾ These are non-IFRS financial measures and ratios. Further details on these non-IFRS financial measures and ratios are provided at the end of this press release and in the MD&A accompanying the Company's financial statements, which can be viewed on the Company's website, on SEDAR at www.sedar.com and on EDGAR at www.sec.gov.

For the three months ended March 31, 2023, revenue, net of $0.6 million of smelting and refining costs, decreased by 4% to $55.5 million (Q1 2022: $57.7 million).

Gross sales of $56.1 million in Q1 2023 represented a 4% decrease over the $58.4 million in Q1 2022. Silver oz sold decreased by 3%, due to a decrease in finished goods silver ounces available for sale as at December 31, 2022 compared to December 31, 2021, offset by increased silver production. There was a 5% decrease in the realized silver price, resulting in an 8% decrease in proceeds from silver sales. Gold oz sold increased by 9% with a 3% decrease in the realized gold price, resulting in a 6% increase in proceeds from gold sales. During the period, the Company sold 1,667,408 oz silver and 9,126 oz gold for realized prices of $23.16 and $1,917 per oz, respectively, compared to Q1 2022 sales of 1,717,768 oz silver and 8,381 oz gold for realized prices of $24.38 and $1,970 per oz, respectively. In Q1 2023, London spot prices for silver and gold averaged $22.55 and $1,890, respectively.

The Company slightly decreased its finished goods silver inventory and slightly increased its finished goods gold inventory to 471,069 oz and 1,766 oz, respectively, at March 31, 2023 compared to 530,250 oz silver and 1,707 oz gold at December 31, 2022. The cost allocated to these finished goods was $7.4 million at March 31, 2023 compared to $6.1 million at December 31, 2022. At March 31, 2023, the finished goods inventory fair market value was $14.7 million, compared to $15.8 million at December 31, 2022.

After cost of sales of $39.54 million (Q1 2022 - $37.4 million), an increase of 6%, mine operating earnings were $16.0 million (Q1 2022 - $20.3 million). The cost of sales in Q1, 2023 was impacted by a strengthened Mexican peso, higher labour, power and consumables costs as the Company, as well as the industry, has experienced significant inflationary pressures. The Company also recognized increased royalty costs during Q1, 2023 compared to the prior period as a higher percentage of the production at Guanacevi has come from the El Curso and El Porvenir concessions, which are subject to royalties.

The Company had operating earnings of $6.9 million (Q1 2022: $12.6 million) after exploration and evaluation costs of $4.2 million (Q1 2022: $3.2 million) and general and administrative costs of $4.9 million (Q1 2022: $4.3 million. Exploration and evaluation costs increased primarily to additional spending on the recently acquired Pitarrilla project and general and administrative costs increased primarily due to investment in a new ERP system.

Earnings before income taxes were $12.5 million (Q1 2022: $18.9 million) after finance costs of $0.4 million (Q1 2022: $0.3 million), a foreign exchange gain of $1.9 million (Q1 2022: $0.8 million), and investment and other income of $4.0 million (Q1 2022: $5.8 million). The increase in the foreign exchange gain is due to the strengthening of the Mexican peso which increases the value of peso denominated working capital items. The investment and other income during Q1 2023 primarily resulted from an unrealized gain on marketable securities and warrants of $3.1 million (Q1 2022: $5.4 million).

The Company realized net earnings for the period of $6.5 million (Q1 2022: $11.7 million) after an income tax expense of $6.1 million (Q1 2022: $7.2 million). Current income tax expense increased to $4.4 million (Q1 2022 - $1.0 million) and deferred income taxes decreased to $1.7 million (Q1, 2022: $6.2 million).During 2022, the changes in current and deferred taxes were driven primarily by the utilization of loss carryforwards at Guanacevi and during 2023 there were no further loss carryforwards available to offset against current income tax and changes in deferred income taxes was primarily derived from changes in temporary timing differences between deductions for accounting versus deductions for tax.

Direct operating costs⁽²⁾ on a per tonne basis increased to $132.11, up 8% compared with Q1 2022 due to both a strengthening of the Mexican peso and higher operating costs at both Guanaceví and Bolanitos from increased inflationary pressure during 2022 and Q1 2023. As the Mexican peso strengthens, the Company's Mexican peso denominated costs are increased in US dollar terms. Guanaceví and Bolañitos have seen increased labour, power and consumable costs.

Consolidated cash costs per oz, net of by-product credits, increased to $11.12 primarily due to the higher direct costs per tonne slightly offset by a higher gold credit driven by higher gold production compared to Q1 2022. AISC decreased by 4% on a per oz basis compared to Q1 2022 as a result of costs being allocated over increased ounces produced which offset the increased costs.

The complete financial statements and management's discussion & analysis can be viewed on the Company's website, on SEDAR at www.sedar.com and on EDGAR at www.sec.gov. All shareholders can receive a hard copy of the Company's complete audited financial statements free of charge upon request. To receive this material in hard copy, please contact Galina Meleger, VP of Investor Relations at 604-640-4804, toll free at 1-877-685-9775 or by email at gmeleger@edrsilver.com

Conference Call

A conference call to discuss the Company's Q1 2023 financial results will be held today at 10:00 a.m. PT / 1:00 p.m. ET. To participate in the conference call, please dial the numbers below.

About Endeavour Silver - Endeavour is a mid-tier precious metals mining company that operates two high-grade underground silver-gold mines in Mexico. Endeavour is currently advancing construction of the Terronera project and exploring its portfolio of exploration and development projects in Mexico, Chile and the United States to facilitate its goal to become a premier senior silver producer. Our philosophy of corporate social integrity creates value for all stakeholders.

SOURCE Endeavour Silver Corp.

Contact Information
Galina Meleger,
Vice President of Investor Relations
Tel: (877) 685 - 9775
Email: gmeleger@edrsilver.com
Website: www.edrsilver.com

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Endnotes

¹ Silver equivalent (AgEq)

AgEq is calculated using an 80:1 silver:gold ratio.

² Non-IFRS and Other Financial Measures and Ratios

Certain non-IFRS and other non-financial measures and ratios are included in this press release, including cash costs per silver ounce, total production costs per ounce, all-in costs per ounce, all-in sustaining cost ("AISC") per ounce, direct operating costs per tonne, direct costs per tonne, silver co-product cash costs, gold co-product cash costs, realized silver price per ounce, realized gold price per ounce, adjusted net earnings (loss) adjusted net earnings (loss) per share, mine operating cash flow before taxes, working capital, operating cash flow before working capital adjustments, operating cash flow before working capital changes per share, earnings before interest, taxes, depreciation and amortization ("EBITDA"), adjusted EBITDA per share and sustaining and growth capital.

Please see the March 31, 2023 MD&A for explanations and discussion of these non-IFRS and other non-financial measures and ratios. The Company believes that these measures and ratios, in addition to conventional measures and ratios prepared in accordance with International Financial Reporting Standards ("IFRS"), provide management and investors an improved ability to evaluate the underlying performance of the Company. The non-IFRS and other non-financial measures and ratios are intended to provide additional information and should not be considered in isolation or as a substitute for measures or ratios of performance prepared in accordance with IFRS. These measures and ratios do not have any standardized meaning prescribed under IFRS, and therefore may not be comparable to other issuers. Certain additional disclosures for these non-IFRS measures have been incorporated by reference and can be found in the section "Non-IFRS Measures" in the March 31, 2023 MD&A available on SEDAR at www.sedar.com.

Reconciliation of Working Capital

Reconciliation of Adjusted Net Earnings (Loss) and Adjusted Net Earnings (Loss) Per Share

Reconciliation of Cash Cost Per Silver Ounce, Total Production Costs Per Ounce, Direct Operating Costs Per Tonne, Direct Costs Per Tonne

Reconciliation of All-In Costs Per Ounce and AISC per ounce

Reconciliation of Sustaining Capital and Growth Capital

Reconciliation of Silver Co-Product Cash Costs and Gold Co-Product Cash Costs

Reconciliation of Realized Silver Price Per Ounce and Realized Gold Price Per Ounce

Cautionary Note Regarding Forward-Looking Statements

This news 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. Such forward-looking statements and information herein include but are not limited to statements regarding the development and financing of the Terronera Project, including anticipated terms and timing of the Debt Facility, estimated Project economics, Terronera's forecasted operations, costs and expenditures, and the timing and results of various activities. The Company does not intend to and does not assume any obligation to update such forward-looking statements or information, other than as required by applicable law.

Forward-looking statements or information involve known and unknown risks, uncertainties and other factors that may cause the actual results, level of activity, production levels, performance or achievements of Endeavour and its operations to be materially different from those expressed or implied by such statements. Such factors include but are not limited to the completion of Societe Generale's and ING's due diligence requirements; the final terms of the Debt Facility and the Company's ability to successfully drawdown under the Debt Facility; the ongoing effects of inflation and supply chain issues on Project economics; national and local governments, legislation, taxation, controls, regulations and political or economic developments in Canada and Mexico; financial risks due to precious metals prices; operating or technical difficulties in mineral exploration, development and mining activities; risks and hazards of mineral exploration, development and mining; the speculative nature of mineral exploration and development; risks in obtaining necessary licenses and permits; and challenges to the Company's title to properties; as well as those factors described in the section "risk factors" contained in the Company's most recent form 40F/Annual Information Form filed with the S.E.C. and Canadian securities regulatory authorities.

Forward-looking statements are based on assumptions management believes to be reasonable, including but not limited to: the ability of the Company to successfully secure a debt facility, the continued operation of the Company's mining operations, no material adverse change in the market price of commodities, the Project's forecasted economics as of 2023, mining operations will operate and the mining products will be completed in accordance with management's expectations and achieve their stated production outcomes, and such other assumptions and factors as set out herein. Although the Company has attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking statements or information, there may be other factors that cause results to be materially different from those anticipated, described, estimated, assessed or intended. There can be no assurance that any forward-looking statements or information will prove to be accurate as actual results and future events could differ materially from those anticipated in such statements or information. Accordingly, readers should not place undue reliance on forward-looking statements or information.

Appendix

Endeavour Silver Corp.
CONDENSED CONSOLIDATED INTERIM STATEMENTS OF COMPREHENSIVE EARNINGS
(unaudited - prepared by management)
(expressed in thousands of US dollars, except for shares and per share amounts)

Endeavour Silver Corp.
CONDENSED CONSOLIDATED INTERIM STATEMENTS OF FINANCIAL POSITION
(unaudited - prepared by management)
(expressed in thousands of US dollars)

Endeavour Silver Corp.
CONDENSED CONSOLIDATED INTERIM STATEMENTS OF CASH FLOWS
(unaudited - prepared by management)
(expressed in thousands of US dollars)