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Fortuna reports results for the first quarter of 2023

Production Results Financials

NEWS RELEASE

Fortuna reports results for the first quarter of 2023

(All amounts are expressed in US dollars, tabular amounts in millions, unless otherwise stated)

Vancouver, May 15, 2023: Fortuna Silver Mines Inc. (NYSE: FSM) (TSX: FVI) (“Fortuna” or the “Company”) today reported its financial and operating results for the first quarter of 2023.

First Quarter 2023 highlights

Financial

  • Adjusted net income of $13.2 million or $0.05 per share
  • Net income of $11.9 million or $0.04 per share
  • Adjusted EBITDA1 of $65.3 million
  • Net cash provided by operating activities $41.8 million and free cash flow from ongoing operations of $8.5 million
  • Liquidity as of March 31, 2023 was $129.7 million

Return to Shareholders

  • NCIB share repurchase program renewed for up to 5% of outstanding common shares (refer to Fortuna news release dated April 28, 2023)

Operational

  • Gold production of 60,092 ounces
  • Silver production of 1,586,378 ounces
  • Gold equivalent production of 94,110 ounces
  • Consolidated cash costs1 per ounce of gold equivalent sold of $916
  • Consolidated AISC1 per ounce of gold equivalent sold of $1,514
  • Lost Time Injury Frequency Rate (LTIFR) of 0.56 and Total Recordable Injury Frequency Rate (TRIFR) of 1.39

Growth and Development

  • On May 8, 2023 Fortuna announced a definitive agreement to acquire Chesser Resources Ltd. by way of an all share transaction for a total consideration of A$89.0 million (CAD$80.6). Upon completion, the former shareholders of Chesser will own approximately 5.1% of the shares of Fortuna on an undiluted basis. Chesser Resources’ Diamba Sud Project in Senegal expands Fortuna’s advanced exploration pipeline in West Africa.
  • First gold pour at the Séguéla mine in Cote d’Ivoire is planned for May 2023

Jorge A. Ganoza, President and CEO, commented, “Production and total cost per ounce for the first quarter were overall on plan, resulting in net earnings per share of $0.04 and free cash flow from operations of $8.5 million. Commissioning activities at Séguéla are well advanced and tracking according to plan for first gold pour in May, giving us a higher level of confidence in a smooth ramp-up process towards design capacity.” Mr. Ganoza continued, “The announced Chesser transaction meets our strategic objective of expanding our asset portfolio of high value opportunities in countries where we operate or near neighbours.” Mr. Ganoza concluded, “The Chesser acquisition provides for an exciting advanced exploration opportunity, expanding our West African presence to Senegal, a mining friendly jurisdiction, and into the heart of the Senegal-Mali shear zone, one of the most prolific gold belts in the West African region.”

First Quarter 2023 Consolidated Results

Three months ended March 31,
(Expressed in millions)20232022% Change
Sales175.7182.3(4%)
Mine operating income40.463.5(36%)
Operating (loss) income23.940.7(41%)
Net (loss) income11.927.0(56%)
(Loss) earnings per share - basic0.040.09(56%)
Adjusted net income113.233.3(60%)
Adjusted EBITDA165.380.3(19%)
Net cash provided by operating activities41.833.226%
Free cash flow from ongoing operations18.59.6(11%)
Production cash cost ($/oz Au Eq)91677219%
All-in sustaining cash cost ($/oz Au Eq)1,5141,28418%

Capital expenditures2

Sustaining27.918.055%
Non-sustaining31.21.9(37%)
Séguéla construction25.742.9(40%)
Brownfields4.92.596%
As atMarch 31, 2023 December 31, 2022 % Change
Cash and cash equivalents84.780.55%
Net liquidity position129.7150.5(14%)

1 Refer to Non-IFRS Financial Measures section at the end of this news release and to the MD&A accompanying the Company’s financial statements filed on SEDAR at www.sedar.com for a description of the calculation of these measures.

2 Capital expenditures are presented on a cash basis 3 Non-sustaining expenditures include greenfields exploration Figures may not add due to rounding

First Quarter 2023 Results

Net income for the quarter was $11.9 million compared to $27.0 million in Q1 2022. After adjusting for non-cash and nonrecurring items, adjusted net income of $13.2 million for Q1 2023 was $20.1 million lower than Q1 2022. The decrease in adjusted net income was primarily due to higher operating expenses related mainly to higher input costs across our operations and lower operating margins at Yaramoko and Lindero related to lower head grades. This impact was combined with slightly lower sales of $6.7 million, mostly explained by lower silver prices of $22.52 per ounce in Q1 2023 compared to $24.18 per ounce in Q1 2022. These effects were partially offset by lower general and administrative expenses of $2.0 million compared to Q1 2022.

Adjusted EBITDA for the quarter was $65.3 million, a 36% margin over sales, compared to $80.3 million reported in Q1 2022, representing a 44% margin over sales. The main driver for the decrease in EBITDA were higher operating costs and slightly lower sales as described above.

Net cash generated by operations for the quarter was $41.8 million or $0.14 per share compared to $33.2 million or $0.11 per share in Q1 2022. The increase reflects lower EBITDA of $15.0 million offset by negative changes in working capital in the current quarter of $10.8 million versus negative changes of $27.9 million in Q1 2022, and lower-income taxes paid of $7.1 million.

Free cash flow from ongoing operations for the quarter was $8.5 million, compared to $9.6 million in Q1 2022. The decrease is the result of higher net cash generated by operations of $8.6 million compared to the Q1 2022, offset by higher sustaining capex and brownfields exploration at our operating mines of $12.3 million in Q1 2023.

Fortuna | 2

Liquidity

The Company’s total liquidity available as of March 31, 2023 was $129.7 million, comprised of $84.7 million in cash and cash equivalents, and $45.0 million undrawn on the $250.0 million revolving credit facility.

Séguéla Gold Project Construction Update

As of March 31, 2023, the Séguéla Gold Project had approximately $22.5 million in remaining spend of the project’s $173.5 million total initial capital, and the project remains on-time and on-budget. The Company’s cash and cash equivalents balance, free cash flow from ongoing operations and undrawn amounts of the revolving credit facility are expected to fund the remaining construction spend of the Séguéla Gold Project.

Lindero Mine, Argentina

Three months ended March 31,
20232022

Mine Production Tonnes placed on the leach pad 1,478,148 1,295,755

Gold

Grade (g/t)0.710.88
Production (oz)25,25830,068
Metal sold (oz)26,81228,619
Realized price ($/oz)1,8851,890

Unit Costs Cash cost ($/oz Au)1 891 692 All-in sustaining cash cost ($/oz Au)1 1,424 1,038

Capital Expenditures ($000's) 2

Sustaining7,7453,125
Non-sustaining187169
Brownfields–144

1 Cash cost and AISC are non-IFRS financial measures; refer to non-IFRS financial measures section at the end of this news release and to the MD&A accompanying the Company’s financial statements filed on SEDAR at www.sedar.com for a description of the calculation of these measures.

2 Capital expenditures are presented on a cash basis.

Quarterly Operating and Financial Highlights

In the first quarter of 2023, a total of 1,478,148 tonnes of ore were placed on the heap leach pad, with an average gold grade of 0.71 g/t, containing and estimated 33,510 ounces of gold. Gold production for Q1 2023 totaled 25,258 ounces, representing a 16% decrease year-over-year. The decline in gold production can primarily be attributed to a decrease in the head grade of mineralized material placed on the leach pad, which is aligned with the planned mining sequence. Mine production was 1.6 million tonnes of mineralized material, with a strip ratio of 1.07:1. This stripping ratio is consistent with the operation's plan for the year, which anticipates a ratio of 1.17:1.

Cash cost per ounce of gold for Q1 2023, was $891 compared to $692 in the Q1 2022. Cash cost per ounce of gold was higher due to lower production, higher prices of key consumables due to inflation, higher equipment rental costs due to lower fleet availability, and timing of plant maintenance. This was partially offset by higher stripping capitalization.

All-in sustaining cash cost per gold ounce sold was $1,424 during Q1 2023 compared with $1,038 in Q1 2022. All-in sustaining cash cost for Q1 2023 was impacted by the cost issues described above, compounded by lower ounces sold and higher sustaining capital spend, partially offset by a positive by-product effect from copper.

Fortuna | 3

During the quarter, sustaining capital expenditures were primarily a result of Phase II expansion of the leach pad, routine maintenance, and several minor projects. There were no brownfields exploration capital investments made within this period.

Yaramoko Mine Complex, Burkina Faso

Three months ended March 31,
20232022

Mine Production Tonnes milled 139,650 127,968

Gold

Grade (g/t)5.947.50
Recovery (%)9798
Production (oz)26,43728,235
Metal sold (oz)29,53029,530
Realized price ($/oz)1,8991,878

Unit Costs Cash cost ($/oz Au)1 819 705 All-in sustaining cash cost ($/oz Au)1 1,509 1,147

Capital Expenditures ($000's) 2 Sustaining 13,549 7,361 Brownfields 1,191 488 1 Cash cost and AISC are non-IFRS financial measures; refer to non-IFRS financial measures section at the end of this news release and to the MD&A accompanying the Company’s financial statements filed on SEDAR at www.sedar.com for a description of the calculation of these measures.

2 Capital expenditures are presented on a cash basis.

The Yaramoko Mine produced 26,437 ounces of gold in the Q1 2023 with an average gold head grade of 5.94g/t, a 6% decrease, respectively, when compared to Q1 2022. Higher mill throughput contributed positively to the operation, offset by reduced operating time due to planned maintenance and lower head grades. Production for the quarter was in line with the mining sequence and Mineral Reserves estimate.

Underground mineralized material was sourced from the 55 Zone, with development also contributing from outside of the current resource boundary on the western side of the deposit.

Cash cost per ounce of gold sold in Q1 2023, was $819, compared to $705 in Q1 2022. Cash cost per ounce increased due to higher processing costs resulting from increased maintenance costs and the impact of inflation on key consumables and mining costs. Processing costs were also higher as a result of processing of increased tonnes at lower grades.

All-in sustaining cash cost per gold ounce sold was $1,509 for Q1 2023, compared to $1,147 in Q1 2022. This increase was as a result of a decrease in production, increased cash cost, and higher capital expenditures.

Sustaining capital in Q1 2023 increased due to higher mine development. Brownfields expenditure was primarily higher due to an increase in diamond drilling meters.

Fortuna | 4

San Jose Mine, Mexico

Three months ended March 31,
20232022

Mine Production Tonnes milled 246,736 250,947 Average tonnes milled per day 2,869 2,918

Silver

Grade (g/t)181185
Recovery (%)9191
Production (oz)1,303,3121,358,189
Metal sold (oz)1,328,3331,316,193
Realized price ($/oz)22.5824.27

Gold

Grade (g/t)1.151.13
Recovery (%)9090
Production (oz)8,2318,239
Metal sold (oz)8,3557,952
Realized price ($/oz)1,9001,890

Unit Costs

Production cash cost ($/t)286.6676.05
Production cash cost ($/oz Ag Eq)1,211.4210.42
All-in sustaining cash cost ($/oz Ag Eq)1,215.5115.32

Capital Expenditures ($000's) 3

Sustaining3,7723,575
Non-sustaining269415
Brownfields1,0881,529

1 Production cash cost per ounce of silver equivalent and all-in sustaining cash cost per ounce of silver equivalent are calculated using realized metal prices for each period respectively.

2 Production cash cost per tonne, production cash cost per ounce of silver equivalent, and all-in sustaining cash cost per ounce of silver equivalent are non-IFRS financial measures, refer to non-IFRS financial measures section at the end of this news release and to the MD&A accompanying the Company’s financial statements filed on SEDAR at www.sedar.com for a description of the calculation of these measures.

3 Capital expenditures are presented on a cash basis.

In the first quarter of 2023, the San Jose Mine produced 1,303,312 ounces of silver and 8,231 ounces of gold, 4% and unchanged, respectively, when compared to Q1 2022. Production for the quarter was aligned with the mining sequence and Mineral Reserves estimate.

The cash cost per tonne for Q1 2023, was $86.66 compared to $76.05 in Q1 2022. The increase was primarily due to inflation and the appreciation of the Mexican Peso, affecting consumables, labor costs and other services paid in local currency.

All-in sustaining cash costs of payable per ounce of silver equivalent for Q1 2023, increased 2% to $15.58 per ounce, compared to $15.32 in Q1 2022. The increase was due to higher cash costs partially offset by lower sustaining capital expenditures and increased silver equivalent production, mainly due to lower silver prices.

In the first quarter of 2023, sustaining capital expenditures were lower than expected, primarily due to delays in executing purchases related to components and overhauls. This contrasts with Q1 2022, when significant planned mine acquisitions had been carried over from the previous quarter. The decrease in Q1 2023 was partially offset by an increase in expenditures related to development and infill drilling meters. Brownfields exploration expenditures faced challenges from geological and operational delays, but accelerated spending is anticipated in Q2 2023.

Fortuna | 5

Caylloma Mine, Peru

Three months ended March 31,
20232022

Mine Production Tonnes milled 125,995 132,574 Average tonnes milled per day 1,448 1,524

Silver

Grade (g/t)8589
Recovery (%)8282
Production (oz)283,066311,939
Metal sold (oz)263,570294,301
Realized price ($/oz)22.2423.78

Gold

Grade (g/t)0.150.16
Recovery (%)2737
Production (oz)166258
Metal sold (oz)22325
Realized price ($/oz)1,8951,828

Lead

Grade (%)3.743.55
Recovery (%)9288
Production (000's lbs)9,5099,134
Metal sold (000's lbs)8,7828,575
Realized price ($/lb)1.021.06

Zinc

Grade (%)5.214.18
Recovery (%)9089
Production (000's lbs)13,05110,827
Metal sold (000's lbs)13,81510,546
Realized price ($/lb)1.451.69

Unit Costs

Production cash cost ($/t)298.0789.60
Production cash cost ($/oz Ag Eq)1,213.1412.39
All-in sustaining cash cost ($/oz Ag Eq)1,216.8817.83

Capital Expenditures ($000's) 3 Sustaining 2,810 3,949 Brownfields 204 324 1 Production cash cost per ounce of silver equivalent and all-in sustaining cash cost per ounce of silver equivalent are calculated using realized metal prices for each period respectively.

2 Production cash cost per tonne, production cash cost per ounce of silver equivalent, and all-in sustaining cash cost per ounce of silver equivalent are non-IFRS financial measures, refer to non-IFRS financial measures section at the end of this news release and to the MD&A accompanying the Company’s financial statements filed on SEDAR at www.sedar.com for a description of the calculation of these measures.

3 Capital expenditures are presented on a cash basis.

In the first quarter of 2023, the Caylloma Mine produced 283,066 ounces of silver, 9.5 million pounds of lead, and 13.1 million pounds of zinc. Silver production was 9% lower compared to Q1 2022, but was in line with the mining sequence and Mineral Reserves estimate. Lead and zinc production rose by 4% and 21% respectively, compared to Q1 2022, due to higher head grades from levels 16 and 17 within the Animas vein, and higher tonnes. Gold production totaled 166 ounces with an average head grade of 0.15 g/t.

Fortuna | 6

The cash cost per tonne of processed ore in Q1 2023 increased 9% to $98.07 compared to $89.60 in Q1 2022. The increase was mainly due to higher mining costs driven by inflation and its direct impact on the price of materials, compounded by lower tonnes processed.

The all-in sustaining cash cost per payable silver equivalent ounce in Q1 2023, decreased 3% to $17.29 per ounce, compared to $17.83 per ounce in Q1 2022. The decrease was mainly increased silver equivalent production, mainly due to lower silver prices.

Sustaining capital expenditures in Q1 2023 decreased primarily due to blockades limiting project executions. Spending on execution of the developments located on levels 15 and level 18 at the Animas vein was offset by decreased expenditure on other levels. The decrease in brownfields exploration capital expenditures was primarily due to a decrease in diamond drilling meters.

Qualified Person

Eric Chapman, Senior Vice President of Technical Services, is a Professional Geoscientist of the Association of Professional Engineers and Geoscientists of the Province of British Columbia (Registration Number 36328), and is the Company’s Qualified Person (as defined by National Instrument 43-101). Mr. Chapman has reviewed and approved the scientific and technical information contained in this news release and has verified the underlying data.

Non-IFRS Financial Measures

The Company has disclosed certain financial measures and ratios in this news release which are not defined under the International Financial Reporting Standards (“IFRS”), as issued by the International Accounting Standards Board, and are not disclosed in the Company's financial statements, including but not limited to: cash cost per ounce of gold sold; all-in sustaining cash cost per ounce of gold sold; all-in cash cost per ounce of gold sold; total production cash cost per tonne; cash cost per payable ounce of silver equivalent sold; all-in sustaining cash cost per payable ounce of silver equivalent sold; all-in cash cost per payable ounce of silver equivalent sold; free cash flow from ongoing operations; adjusted net income; adjusted EBITDA and working capital.

These non-IFRS financial measures and non-IFRS ratios are widely reported in the mining industry as benchmarks for performance and are used by management to monitor and evaluate the Company's operating performance and ability to generate cash. The Company believes that, in addition to financial measures and ratios prepared in accordance with IFRS, certain investors use these non-IFRS financial measures and ratios to evaluate the Company’s performance. However, the measures do not have a standardized meaning under IFRS and may not be comparable to similar financial measures disclosed by other companies. Accordingly, non-IFRS financial measures and non-IFRS ratios should not be considered in isolation or as a substitute for measures and ratios of the Company’s performance prepared in accordance with IFRS. The Company has calculated these measures consistently for all periods presented.

To facilitate a better understanding of these measures and ratios as calculated by the Company, descriptions are provided below. In addition see “Non-IFRS Financial Measures” in the Company’s management’s discussion and analysis for the three months ended March 31, 2023 (“Q1 2023 MDA”), which section is incorporated by reference in this news release, for additional information regarding each non-IFRS financial measure and non-IFRS ratio disclosed in this news release, including an explanation of their composition; an explanation of how such measures and ratios provide useful information to an investor and the additional purposes, if any, for which management of the Company uses such measures and ratio. The Q1 2023 MD&A may be accessed on SEDAR at www.sedar.com under the Company’s profile.

Except as otherwise described in the Q1 2023 MD&A, the Company has calculated these measures consistently for all periods presented.

Fortuna | 7

Reconciliation to adjusted net income for the three months ended March 31, 2023 and 2022

Three months ended March 31,
Consolidated (in millions of US dollars)20232022

Net income 11.9 27.0 Adjustments, net of tax:

Foreign exchange loss, Séguéla Project-0.6
Unrealized loss on derivatives1.0-
Accretion on right of use assets0.60.6
Other non-cash/non-recurring items(0.3)1.3
Adjusted Net Income13.229.5

1 Amounts are recorded in Cost of sales 2 Amounts are recorded in General and Administration Figures may not add due to rounding

Reconciliation to adjusted EBITDA for the three months ended March 31, 2023 and 2022

Three months ended March 31,
Consolidated (in millions of US dollars)20232022

Net (loss) income 11.9 27.0 Adjustments:

Community support provision and accruals(0.1)-
Foreign exchange loss, Séguéla Project-0.6
Net finance items2.62.8
Depreciation, depletion, and amortization44.438.1
Income taxes7.96.8
Other non-cash/non-recurring items(1.4)5.0
Adjusted EBITDA65.380.3

Figures may not add due to rounding

Reconciliation of free cash flow from ongoing operations for the three months ended March 31, 2023 and 2022

In 2022, the Company changed the method for calculating free cash flow from ongoing operations. The calculation now uses taxes paid as opposed to the previous method which used current income taxes. While this may create larger quarter over quarter fluctuations due to the timing of income tax payments, management believes the revised method is a better representation of the free cash flow generated by the Company’s ongoing operations. Comparative values from 2021 have been restated using the change in the methodology.

Three months ended March 31,
Consolidated (in millions of US dollars)20232022

(Restated) Net cash provided by operating activities 41.8 33.2 Adjustments

Additions to mineral properties, plant and equipment(30.4)(20.5)
Other adjustments(2.9)(3.1)
Free cash flow from ongoing operations8.59.6

Figures may not add due to rounding

Fortuna | 8

Reconciliation of cash cost per ounce of gold sold for the three months ended March 31, 2023 and 2022

Lindero MineThree months ended March 31,
(Expressed in $'000's, except unit costs)20232022
Cost of sales41,72535,867
Changes in doré inventory(1,331)1,017
Inventory adjustment15739
Export duties(3,926)(4,008)
Depletion and depreciation(13,192)(12,009)
By product credits(799)-
Production cash cost122,49221,607
Changes in doré inventory1,331(1,017)
Realized gain in diesel hedge-(782)
Cash cost applicable per gold ounce soldA 23,82319,808
Ounces of gold soldB 26,73928,607
Cash cost per ounce of gold sold1($/oz)=A/B 891692
Cost of sales44,86338,041
Changes in doré inventory-(1,320)
Export duties(3,362)(3,333)
Depletion and depreciation(17,368)(14,028)
By product credits-(5)
Production cash cost24,13319,355
Changes in doré inventory-1,320
Refining charges-155
Cash cost applicable per gold ounce soldA 24,13320,830
Ounces of gold soldB 29,47229,530
Cash cost per ounce of gold sold ($/oz)=A/B 819705
Yaramoko MineThree months ended March 31,
(Expressed in $'000's, except unit costs)20232022

Reconciliation of cash cost per ounce of gold equivalent sold for the three months ended March 31, 2023 and 2022

ConsolidatedThree months ended March 31,
(Expressed in $'000's, except unit costs)20232022
Cost of sales135,219118,828
Changes in concentrate inventory and dore inventory(1,534)(115)
Cost of sales-Right of use694-
Depletion and depreciation in concentrate inventory(173)(147)
Inventory adjustment1112,222
Royalties, export duties and mining taxes(8,711)(8,980)
Provision for community support(25)(126)
Workers' participation(463)(1,340)
Depletion and depreciation(43,955)(37,738)
By product credits(799)(5)
Production cash cost80,36472,599
Changes in concentrate inventory and dore inventory1,534115
Cost of sales-Right of use(694)-
Depletion and depreciation in concentrate inventory173147
Inventory adjustment(96)(1,483)
Realized gain in diesel hedge-(782)
Treatment charges5,0384,786
Refining charges1,191638
Cash cost applicable per gold equivalent ounce soldA 87,51176,021
Ounces of gold equivalent soldB 95,54198,448
Cash cost per ounce of gold equivalent sold ($/oz)=A/B 916772

Fortuna | 9

Reconciliation of all-in sustaining cash cost per ounce of gold sold for the three months ended March 31, 2023 and 2022

Lindero MineThree months ended March 31,
(Expressed in $'000's, except unit costs)20232022
Cash cost applicable23,82319,808
Export duties and mining taxes3,9264,008
General and administrative expenses (operations)1,9921,905
Adjusted operating cash cost29,74125,721
Sustaining leases598705
Sustaining capital expenditures17,7453,125
Brownfields exploration expenditures1-144
All-in sustaining cash cost38,08429,695
Non-sustaining capital expenditures1187169
All-in cash cost38,27129,864
Ounces of gold sold26,73928,607
All-in sustaining cash cost per ounce of gold sold1,4241,038
All-in cash cost per ounce of gold sold1,4311,044

1 Presented on a cash basis

Yaramoko MineThree months ended March 31,
(Expressed in $'000's, except unit costs)20232022
Cash cost applicable24,13320,830
Export duties and mining taxes3,3623,333
General and administrative expenses (operations)889410
Adjusted operating cash cost28,38424,573
Sustaining leases1,3591,435
Sustaining capital expenditures113,5497,361
Brownfields exploration expenditures11,191488
All-in sustaining cash cost44,48333,857
All-in cash cost44,48333,857
Ounces of gold sold29,47229,530
All-in sustaining cash cost per ounce of gold sold1,5091,147
All-in cash cost per ounce of gold sold1,5091,147

1 Presented on a cash basis

Reconciliation of all-in sustaining cash cost per ounce of gold equivalent sold for the three months ended March 31, 2023 and 2022

Three months ended
ConsolidatedMarch 31,
(Expressed in $'000's, except unit costs)20232022

Cash cost applicable 87,511 76,021

Royalties, export duties and mining taxes8,7118,980
Workers' participation5381,614
General and administrative expenses (operations)5,8274,963

General and administrative expenses (Corporate) 8,681 11,339 Adjusted operating cash cost 111,268 102,917 Care and maintenance costs (impact of COVID-19) - 2 Sustaining leases 2,975 3,005 Sustaining capital expenditures3 27,876 18,010 Brownfields exploration expenditures3 2,483 2,485 All-in sustaining cash cost 144,602 126,419 Payable ounces of gold equivalent sold 95,541 98,448 All-in sustaining cash cost per ounce of gold equivalent sold 1,514 1,284

Fortuna | 10

Gold equivalent was calculated using the realized prices for gold of $1,893/oz Au, $22.5/oz Ag, $2,256/t Pb, and $3,197/t Zn for Q1 2023 and using the realized prices for gold of $1,884/oz Au, $24.2/oz Ag, $2,331/t Pb, and $3,736/t Zn for Q1 2022

Reconciliation of production cash cost per tonne and cash cost per payable ounce of silver equivalent sold for the three months ended March 31, 2023 and 2022

San Jose MineThree months ended March 31,
(Expressed in $'000's, except unit costs)20232022
Cost of sales32,52328,899
Changes in concentrate inventory7177
Cost of sales-right of use133-
Depletion and depreciation in concentrate inventory(29)(21)
Inventory adjustment(129)537
Royalties and mining taxes(1,257)(1,392)
Workers participation(17)(727)
Depletion and depreciation(9,912)(8,287)
Cash cost3A 21,38319,086
Total processed ore (tonnes)B 246,736250,947
Production cash cost per tonne3($/t)=A/B 86.6676.05
Cash cost3A 21,38319,086
Changes in concentrate inventory(71)(77)
Depletion and depreciation in concentrate inventory2921
Inventory adjustment129(537)
Treatment charges(220)872
Refining charges94491
Cash cost applicable per payable ounce sold3C 22,19419,456
Payable ounces of silver equivalent sold1D 1,944,2651,867,871
Cash cost per ounce of payable silver equivalent sold2,3($/oz)=C/D 11.4210.42
Mining cost per tonne339.0537.45
Milling cost per tonne20.3918.01
Indirect cost per tonne19.5614.63
Community relations cost per tonne1.854.84
Distribution cost per tonne5.811.12
Production cash cost per tonne3($/t)86.6676.05

1 Silver equivalent sold for Q1 2023 is calculated using a silver to gold ratio of 81.2:1 (Q1 2022: 77.9:1).

2 Silver equivalent is calculated using the realized prices for gold and silver. Refer to Financial Results – Sales and Realized Prices

Fortuna | 11

Caylloma MineThree months ended March 31,
(Expressed in $'000's, except unit costs)20232022
Cost of sales16,10816,021
Changes in concentrate inventory(274)111
Cost of sales-right of use561-
Depletion and depreciation in concentrate inventory(144)(126)
Inventory adjustment225272
Royalties and mining taxes(166)(247)
Provision for community support(25)(126)
Workers participation(446)(613)
Depletion and depreciation(3,483)(3,414)
Cash cost3A 12,35611,878
Total processed ore (tonnes)B 125,996132,574
Production cash cost per tonne3($/t)=A/B 98.0789.60
Cash costA 12,35611,878
Changes in concentrate inventory274(111)
Depletion and depreciation in concentrate inventory144126
Inventory adjustment(225)(272)
Treatment charges5,2593,914
Refining charges247392
Cash cost applicable per payable ounce sold3C 18,05515,927
Payable ounces of silver equivalent sold1D 1,373,6991,285,610
Cash cost per ounce of payable silver equivalent sold2,3($/oz)=C/D 13.1412.39
Mining cost per tonne43.0635.29
Milling cost per tonne15.6816.23
Indirect cost per tonne29.4030.60
Community relations cost per tonne0.617.04
Distribution cost per tonne9.320.45
Production cash cost per tonne3($/t)98.0789.60

1 Silver equivalent sold for Q1 2023 is calculated using a silver to gold ratio of 0.0:1 (Q1 2022: 76.9:1), silver to lead ratio of 1:22.3 pounds (Q1 2022: 1:22.5), and silver to zinc ratio of 1:15.7 pounds (Q1 2022: 1:14.0).

2 Silver equivalent is calculated using the realized prices for gold, silver, lead, and zinc. Refer to Financial Results - Sales and Realized Prices

Reconciliation of all-in sustaining cash cost and all-in cash cost per payable ounce of silver equivalent sold for the three months ended March 31, 2023 and 2022

San Jose MineThree months ended March 31,
(Expressed in $'000's, except unit costs)20232022
Cash cost applicable422,19419,456
Cost of sales-right of use(133)-
Royalties and mining taxes1,2571,392
Workers' participation21909
General and administrative expenses (operations)1,8021,590
Adjusted operating cash cost425,14123,347
Care and maintenance costs (impact of COVID-19)-2
Sustaining leases162157
Sustaining capital expenditures33,7723,575
Brownfields exploration expenditures31,0881,529
All-in sustaining cash cost30,16328,610
Non-sustaining capital expenditures3269415
All-in cash cost30,43229,025
Payable ounces of silver equivalent sold11,944,2651,867,871
All-in sustaining cash cost per ounce of payable silver equivalent sold215.5115.32
All-in cash cost per ounce of payable silver equivalent sold215.6515.54

1 Silver equivalent sold for Q1 2023 is calculated using a silver to gold ratio of 81.2:1 (Q1 2022: 77.9:1).

2 Silver equivalent is calculated using the realized prices for gold and silver. Refer to Financial Results - Sales and Realized Prices 3 Presented on a cash basis

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