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Fortuna Reports Results for the Second Quarter 2026

Financials

Fortuna Reports Results for the Second Quarter 2026

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

Fortuna Delivers Strong Q2 Results; Positioned To Deliver Our Next Phase of Growth

Vancouver, British Columbia, August 5, 2026: Fortuna Mining Corp. (NYSE: FSM | TSX: FVI) (“Fortuna”

or the “Company”) today reported its financial and operating results for the second quarter of 2026.

(Results from the Company’s San Jose and Yaramoko assets have been excluded from the 2025 comparative figures as they were disposed of

during the second quarter of 2025.)

Jorge Ganoza, President and CEO of Fortuna , commented, “Fortuna delivered another strong quarter of

production, generating $85.7 million of free cash flow from ongoing operations and $200.8 million in

adjusted EBITDA, with a robust EBITDA margin of 63%. The second quarter is expected to be our peak AISC

for the year and trend down in the second half with the completion of key capital projects at Lindero. At

the same time, we are monitoring cost pressures from external factors, including royalties linked to gold

prices, fuel costs, inflation, and macroeconomic conditions in Argentina, and the potential impact to our

cost guidance for the year.”

Mr. Ganoza continued, “We also achieved key milestones for our organic growth projects with the delivery

of the Diamba Sud Feasibility Study and a construction decision for the Séguéla Plant Expansion.

Combined, these two projects will grow our production by 60% to over 500,000 ounces per year.”

Mr. Ganoza concluded, “The quarter also demonstrated the strength of our portfolio as we funded our

growth projects, maintained a strong balance sheet, and still generated sufficient excess cash to return

$82.1 million to shareholders through share buy-backs.”

Second Quarter Highlights

Cash and Cash Flow

• Free cash flow1 from ongoing operations of $85.7 million; a QoQ decrease of $88.3 million, mostly

due to timing of tax payments

• $123.7 million of net cash from operating activities before changes in working capital or $0.41 per

share; a QoQ decrease of $89.6 million, mostly due to timing of tax payments

• Liquidity of $756.7 million and a net cash position of $435 million; strong balance sheet supports

concurrent construction of the Séguéla Plant Expansion and Diamba Sud Project

Profitability

• Adjusted attributable net income 1 of $75.5 million or $0.25 basic EPS; a QoQ decrease of $0.11

per share, due to lower gold price and higher effective tax rate

• Adjusted EBITDA1 of $200.8 million with margins of 63%; a QoQ decrease of $18.0 million primarily

due to lower gold prices

Return to Shareholders

• Year to date the Company has returned $106.6 million to shareholders ($82.1 million in Q2 2026)

via the repurchase of 10.8 million shares

Fortuna | 2

Operational

• Gold equivalent production2 of 72,217 ounces and the Company remains on track to achieve its

annual production guidance

• Consolidated cash cost per gold equivalent ounce (“GEO”)1 of $1,034, up from $951 in the

previous quarter

• Consolidated AISC per GEO 1 of $2,157 for Q2 2026, up from $2,107 in the previous quarter.

Compared to the assumptions in our annual guidance, AISC contains a $49 impact from external

factors, and $115 of one-time operational items.

• We expect AISC to trend down in the second half of the year. Excluding external factors, we expect

unit costs within our control to downtrend within our full year guidance range. External cost

factors, including metal price -linked royalties, macroeconomic factors in Argentina and diesel

prices, remain potential impacts to our full-year outlook.

• Total recordable injury frequency rate for the quarter was 1.21.

Growth and Business Development

• Delivered the Diamba Sud feasibility study, confirming an economically robust project to anchor

our next phase of growth. Refer to the News Release dated June 29, 2026 “Fortuna delivers robust

Feasibility Study for the Diamba Sud Gold Project in Senegal: A fter-tax IRR of 60% and NPV5% of

US$1 billion using US$3,500/oz”.

• Provided a final investment decision for the Séguéla Plant Expansion to unlock the potential of

the mine and provide a pathway to production of over 200,000 ounces per year. Refer to the

News Release dated July 29, 2026 “Fortuna Approves 30% Capacity Expansion of the Séguéla Gold

Mine in Côte d’Ivoire”.

• On July 28, 2026, the Company acquired 5,695,312 common shares of Awalé Resources Limited

(“Awalé”), a mineral exploration company in Côte d’Ivoire, for $3.4 million, thereby increasing the

Company’s investment to 20,732,905 common shares of Awalé and maintaining Fortuna’s

ownership interest in Awalé at approximately 14.7%

Management Promotions

• Effective September 1, Luis Dario Ganoza will be promoted to President from his current role as

Chief Financial Officer, and Kevin O’Reilly will be promoted to Chief Financial Officer from his

current role as Vice President, Finance and Accounting. Luis and Kevin have been with Fortuna for

20 and 5 years, respectively, and these promotions reflect the Company’s next phase of growth

as it prepares to advance c onstruction of the Diamba Sud Project, execute the Séguéla mine

expansion, and continue pursuing its broader growth ambitions.

Fortuna | 3

Second Quarter 2026 Consolidated Results

Three months ended Six months ended June 30,

(in millions of US dollars)

Mar. 31,

2026

Jun. 30,

2026

Jun. 30,

2025

Q2 %

Chang

e 2026 2025

%

Change

OPERATING STATISTICS

GEO production from continuing operations (1)(2) 72,872 72,217 71,229 1% 145,089 141,615 2%

Cash cost continuing operations($/oz GEO) (1)(2) 951 1,034 929 11% 993 899 10%

AISC continuing operations($/oz GEO) (1)(2) 2,107 2,157 1,932 12% 2,134 1,846 16%

Realized price Gold ($/oz) 4,884 4,447 3,307 34% 4,667 3,103 50%

FINANCIAL HIGHLIGHTS

Sales 342.5 318.4 230.4 38% 660.9 425.5 55%

Attributable net income from continuing operations 111.0 75.5 42.6 77% 186.5 78.1 139%

Attributable earnings per share from continuing operations -

basic 0.36 0.25 0.14 79% 0.62 0.25 148%

Adjusted EBITDA (1) 218.8 200.8 133.3 51% 419.6 235.8 78%

CASH FLOW AND CAPEX

Net cash provided by operating activities - continuing operations 209.4 138.3 92.7 49% 347.6 181.7 91%

Free cash flow from ongoing operations (1) 174.0 85.7 57.4 49% 259.7 124.1 109%

Capital expenditures (3)

Sustaining 27.9 36.6 31.4 17% 64.5 54.0 19%

Sustaining leases 6.8 8.9 6.0 48% 15.7 10.9 44%

Growth capital 17.4 31.3 15.6 101% 48.7 31.0 57%

Jun. 30,

2026

Dec. 31,

2025

%

Change

Cash and cash equivalents and short-term investments 606.7 554.0 10%

Net liquidity position (excluding letters of credit) 756.7 704.0 7%

Shareholder's equity attributable to Fortuna shareholders 1,767.0 1,677.0 5%

(1) Refer to Non-IFRS Financial Measures section at the end of this news release and to the MD&A accompanying the Company’s condensed

interim consolidated financial statements for the three and six months ended June 30, 2026 and for the three months ended March 31, 2026

filed on SEDAR+ at www.sedarplus.ca for a description of the calculation of these measures.

(2) Gold equivalent was calculated using the realized prices for gold of $4,447/oz Au, $75.22/oz Ag, $1,930/t Pb and $3,464/t Zn for Q2 2026.

Gold equivalent was calculated using the realized prices for gold of $3,307/oz Au, $33.77/oz Ag, $1,945/t Pb and $2,640/t Zn for Q2 2025.Gold

equivalent was calculated using the realized prices for gold of $4,884/oz Au, $82.69/oz Ag, $1,918/t Pb and $3,246/t Zn for Q1 2026. Gold

equivalent was calculated using the realized prices for gold of $4,667/oz Au, $78.32/oz Ag, $1,925/t Pb and $3,363/t Zn for YTD 2026. Gold

equivalent was calculated using the realized prices for gold of $3,103/oz Au, $32.8/oz Ag, $1,958/t Pb and $2,747/t Zn for YTD 2025.

(3) Capital expenditures are presented on a cash basis

Figures may not add due to rounding

Fortuna | 4

Second Quarter 2026 Results

Q2 2026 vs First Quarter 2026 (“Q1 2026”)

Cash cost per ounce and AISC

Cash cost per GEO sold from continuing operations was $1,034 in Q2 2026, representing an $83 increase

compared to $951 recorded in Q1 2026 and All -in sustaining costs per GEO from continuing operations

was $2,157 representing a $49 increase from the $2,10 7 recorded in the prior quarter. Compared to

underlying annual guidance projections AISC contains a $49 impact from external factors and

approximately $115 of one -time operational items; external factors consisted mainly of $41 from the

appreciation of the Argentine peso at our Lindero mine, $37 higher royalties due to gold prices, $24 from

higher diesel prices and inflationary effects on contractor unit prices, partially offset by $48 from a

decrease in share -based compensation. Internal factors were mainly related to the primary crusher

refurbishment shutdown at Lindero and mobilization costs of an added mining contractor at Séguéla.

Attributable Net Income and Adjusted Net Income

Attributable net income from continuing operations for the period was $75.5 million in Q2 2026,

compared to $111.0 million in Q1 2026.

After adjusting for non-recurring items, adjusted attributable net income was $75.5 million or $0.25 per

share compared to $111.0 million or $0.36 per share in Q1 2026. The decrease was primarily due to lower

realized gold prices, a higher effective tax rate of 46% compared to 33% in Q1 2026 and a higher cost per

GEO. The realized gold price in Q2 2026 was $4,447 per ounce compared to $4,884 in Q1 2026. The higher

effective tax rate was mostly the result of higher deferred taxes at Lindero resulting from the devaluation

of the Argentine peso. Higher cost per GEO was mostly due to the impact of increased costs at Lindero

due to real appreciation of the Argentine peso and one -time items in the quarter and higher royalties at

Séguéla.

Foreign Exchange

In Q2 2026, the Company recorded a foreign exchange loss of $6.3 million compared to a loss of $2.1

million in Q1 2026. The foreign exchange loss was due to the purchase of US dollars in Argentina for

repatriation and movement in the Euro and the impact on cash and VAT balances in Côte d’Ivoire held in

West African Francs.

Cash Flow

Net cash generated by operations before changes in working capital totaled $123.7 million or $0.41 per

share. After adjusting for working capital, net cash generated by operations for the quarter was $138.3

million, a decrease of $71.1 million compared to $209.4 million in Q1 2026. The decrease was driven

primarily by lower sales, and higher taxes paid of $69.7 million due to timing of installments, partially

offset by positive changes in working capital of $14.7 million in Q2 2026 compared to negative $4.0 million

in Q1 2026.

Fortuna | 5

Free cash flow from ongoing operations in Q2 2026 was $85.7 million, a decrease of $88.3 million

compared to $174.0 million in Q1 2026 reflecting lower cash from operating activities and higher

sustaining capital expenditures and advances to contractors.

In Q2 2026, the Company’s total capital expenditures were $67.9 million of which $36.6 million were

classified as sustaining and $31.3 million as non -sustaining. Non -sustaining capital expenditures were

comprised primarily of $10.9 million at the Diamba Sud project, $10.6 million in brownfields and

greenfields exploration, and $5 million related to the earn -in agreement on the Quartzstone project in

Guyana.

Q2 2026 vs Q2 2025

Cash cost per ounce and AISC

Consolidated cash cost per GEO increased to $1,034 in Q2 2026, representing a $105 increase compared

to $929 recorded in Q2 2025. The increase was due to higher costs at Lindero and the effect of higher

silver prices on the calculation of GEOs at Caylloma. Higher costs at Lindero were driven mostly by real

appreciation of the Argentine peso, higher diesel costs, lower gold volume produced and higher operating

expenses related to maintenance activities during the planned 30-day shut-down of the primary crusher.

All-in sustaining costs per GEO from continuing operations increased $22 5 to $2,157 in Q2 2026 from

$1,932 in Q2 2025. This increase primarily resulted from higher cash costs as described above, higher

CAPEX and sustaining leases, and higher royalties because of higher gold prices. This was partially offset

by higher GEOs sold.

Attributable Net Income and Adjusted Net Income

Attributable net income from continuing operations was $75.5 million, or $0.25 per share, compared to

$42.6 million, or $0.14 per share, in Q2 2025.

After adjusting for non-recurring items, adjusted attributable net income from continuing operations was

$75.5 million or $0.25 per share compared to $44.7 million or $0.15 per share in Q2 2025. The increase

was primarily due to higher realized gold prices and slightly higher gold volume sold, partially offset by

higher cash cost per GEO, as discussed above, and higher royalty payments associated with higher gold

prices. Gold averaged $4,447 per ounce in Q2 2026 compared to $3,307 per ounce in Q2 2025. Other

items with an offsetting impact on higher sales were a foreign exchange loss of $6.3 million compared to

a gain of $2.3 million in the comparable period, and a higher effective tax rate of 46% compared to 41%

in Q2 2025.

Depreciation and Depletion

Depreciation and depletion decreased by $4.3 million to $44.0 million compared to $48.3 million Q2 2025.

Depletion per GEO decreased primarily due to the increase in Mineral Reserves at Séguéla and partially

offset by higher depletion per GEO at Lindero due to an impairment reversal of $52.7 million recorded in

Q3 2025. Depreciation and depletion in the period included $11.5 million related to the purchase price

allocation from the 2021 Roxgold acquisition.

Cash Flow

Net cash generated by operations for the quarter was $138.3 million, an increase of $45.6 million

compared to $92.7 million reported in Q2 2025. The increase was primarily driven by higher sales, and

Fortuna | 6

positive working capital of $14.5 million compared to negative $ 4.2 million in Q2 2025, offset by higher

taxes paid in Q2 2026 of $42.9 million.

Free cash flow from ongoing operations in Q2 2026 was $85.7 million, an increase of $28.3 million

compared to $57.4 million reported in Q2 2025. The increase was mainly due to higher cash flow from

operations as discussed above partially offset by higher sustaining capital expenditures.

Fortuna | 7

Séguéla Mine, Côte d’Ivoire

Three months ended June 30, Six months ended June 30,

2026 2025 2026 2025

Mine production

Tonnes milled 421,464 429,184 852,417 873,188

Average tonnes crushed per day 4,581 4,665 4,683 4,798

Gold

Grade (g/t) 3.46 3.00 3.33 2.88

Recovery (%) 92 93 93 93

Production (oz) 41,683 38,186 83,699 76,686

Metal sold (oz) 41,677 38,144 83,731 76,583

Realized price ($/oz) 4,456 3,315 4,682 3,101

Unit costs

Cash cost ($/oz Au) (1) 676 670 677 660

All-in sustaining cash cost ($/oz Au) (1) 1,765 1,634 1,762 1,461

Capital expenditures ($000's) (2)

Sustaining 18,729 18,065 36,746 26,678

Sustaining leases 6,491 4,484 10,755 8,123

Growth capital 10,594 5,538 17,238 14,745

1 Cash cost and All-in sustaining cash cost 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 condensed interim consolidated financial statements for the three and six months

ended June 30, 2026 filed on SEDAR+ at www.sedarplus.ca for a description of the calculation of these measures.

2 Capital expenditures are presented on a cash basis.

Quarterly Operating and Financial Highlights

During the second quarter of 2026, Séguéla mined a total of 433,231 tonnes of ore, averaging 3.06 g/t Au

and containing an estimated 42,555 ounces of gold from the Antenna, Ancien, Koula, and Sunbird pits. A

total of 5,902,142 tonnes of waste was mined during the period, resulting in a strip ratio of 13.6:1.

Additionally, 731,647 tonnes of waste were mined during the quarter at Sunbird South to gain access to

the underground portal position.

In the second quarter of 2026, Séguéla processed 421,464 tonnes of ore, producing 41,683 ounces of gold,

at an average head grade of 3.46 g/t Au, a 2% decrease in tonnes of ore and 15% increase in average head

grade, compared to the same period of the prev ious year. Tonnes milled were slightly lower than in the

previous quarter, reflecting a planned mill reline during the period.

Cash cost per gold ounce sold was $676, comparable to $670 for the second quarter of 2025 as higher

operating costs were offset by increased production.

All-in sustaining cash cost per gold ounce sold was $1,765 for the second quarter of 2026 compared to

$1,634 for the second quarter of 2025. The increase was primarily a result of higher royalties due to an

increase in realized gold prices.

Fortuna | 8

Lindero Mine, Argentina

Three months ended June 30, Six months ended June 30,

2026 2025 2026 2025

Mine production

Tonnes placed on the leach pad 1,558,750 1,828,520 3,084,036 3,581,536

Gold

Grade (g/t) 0.64 0.57 0.63 0.56

Production (oz) 20,829 23,550 42,374 43,870

Metal sold (oz) 20,404 23,487 41,587 42,142

Realized price ($/oz) 4,422 3,293 4,633 3,108

Unit costs

Cash cost ($/oz Au) (1) 1,459 1,148 1,331 1,147

All-in sustaining cash cost ($/oz Au) (1) 2,265 1,783 2,019 1,839

Capital expenditures ($000's) (2)

Sustaining 12,053 11,356 19,722 23,718

Sustaining leases 1,231 791 2,628 1,373

Growth capital 4,083 1,827 4,798 2,134

1 Cash cost and All-in sustaining cash cost 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 condensed interim consolidated financial statements for the three and six months

ended June 30, 2026 filed on SEDAR+ at www.sedarplus.ca 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 second quarter of 2026, a total of 1,558,750 tonnes of ore were placed on the heap leach pad, with

an average gold grade of 0.64 g/t, containing an estimated 32,008 ounces of gold. Ore mined was 1.38

million tonnes, with a stripping ratio of 1.81:1. During the first half of 2026, Lindero placed on the leach

pad approximately 95% of the ounces planned for the period required to achieve the midpoint of its

annual production guidance.

Lindero’s gold production for the quarter was 20,829 ounces compared to 23,550 ounces in the

comparable period. Lower production was due to Lindero completing key capital projects aimed at

improving comminution reliability and availability, which required a planned 30 -day shutdown of the

primary crusher to replace its steel foundations.

The cash cost per ounce of gold for the quarter was $1,459 compared to $1,148 in the same period of

2025. The increase in cash costs was primarily driven by lower gold production and higher maintenance

costs associated with the 30 -day shutdown of the primary crusher as well as real appreciation of the

Argentine Peso increasing costs in US dollar terms and rising diesel prices.

In the second quarter of 2026, AISC per gold ounce sold increased to $2,265 compared to $1,783 in the

comparable period of 2025. The increase in AISC was due to lower payable ounces sold and higher

production cash costs.