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2. Operating cash costs and AISC include results from the Hoyle Pond and Borden operating mines, as well as corporate expenditures where applicable.

Corporate Updates

NEWS RELEASE

DISCOVERY REPORTS 50,552 OUNCES OF GOLD PRODUCTION, $27.3 MILLION OF FREE CASH FLOW1 IN Q2 2025

August 12, 2025, Toronto, Ontario - Discovery Silver Corp. (TSX: DSV, OTCQX: DSVSF) (“Discovery” or the “Company”) today announced the Company’s financial and operating results for the second quarter (“Q2 2025”) and first six months (“YTD 2025”) of 2025. Q2 2025 represents the

TRANSFORMATIONAL QUARTER

first quarter Discovery has reported the results of gold production and Acquired Porcupine Complex on April 15th, sales following the Company’s acquisition (“Acquisition” or “Porcupine establishes Discovery as growing Canadian gold Acquisition”) of the Porcupine Complex (“Porcupine” or the “Porcupine producer Operations”) in and near Timmins, Ontario on April 15, 2025. The Company’s full financial statements and management discussion & Finalized $575.0 million financing package, analysis are available on SEDAR+ at www.sedarplus.ca and on the including $475.0M of royalty & equity financing, Company’s website at www.discoverysilver.com. All dollar amounts are in $100.0M senior debt facility US dollars, unless otherwise noted.

Q2 2025 NET EARNINGS AND EPS

Tony Makuch, Discovery’s CEO, commented: “Q2 2025 was Discovery’s Net earnings of $5.5M ($0.01/share) versus net loss first quarter as a Canadian gold producer. During the quarter, we of $5.1M ($0.01/share) in Q2 2024; Adjusted net integrated systems, strengthened management structures and began earnings1 totaled $28.4 million or $0.04 per share implementing investment programs at Porcupine aimed at improving

INITIAL GOLD PRODUCTION IN Q2 2025

existing operations and pursuing growth opportunities. It was a 50,552 produced from April 16 – June 30; significant challenge, and I want to thank our team for delivering a Production included 16,112 oz from Hoyle Pond, quarter of excellent progress. We also turned in a solid quarter of 27,286 oz from Borden and 7,154 oz from Pamour operating and financial performance, producing 50,552 ounces in the 76 days that we owned the assets. Gold sales of 42,550 ounces were below

OPERATING CASH COSTS IN LINE WITH

gold produced with the gold inventory at quarter end to be sold during

EXPECTATIONS

Q3 2025. Net cash from operations totaled 67.1 million, while free cash Operating cash costs1,2 of $48.8M or $1,334/oz sold flow was $27.3 million. Adjusted net earnings1 totaled $28.4 million or

ATTRACTIVE MARGINS DRIVE PROFITABILITY AND $0.04 per share.

CASH FLOW

“Key investment programs initiated during Q2 205 included investments All-in sustaining costs (“AISC”)1,2 averaged at Dome Mill, mainly in the crushing, grinding and carbon handling $2,123/oz sold versus average realized gold price1 circuits, advancing work at the Dome tailings management area (“TMA”), of $3,337/oz; Site-level AISC3 averaged $1,872/oz continuing to ramp up Pamour, with pre-stripping and production levels sold meeting target levels, and commencing investments at Hoyle Pond and

STRONG CASH FLOW FROM GOLD SALES

Borden to optimize and grow the operations. We also began deploying drills as part of an extensive exploration program targeting numerous Net cash from operating activities of $67.1M; Free cash flow1 of $27.3M near-mine and district targets at Hoyle Pond, Borden and Pamour, and supporting the evaluation of high-potential new sources of production,

SOLID CASH POSITION TO SUPPORT OPERATIONS including the TVZ zone and the resumption of mining at Dome Mine.

AND GROWTH PLANS

“Looking ahead, we are targeting production levels to increase in the final Cash at June 30, 2025, totaled $252.5M; with two quarters of the year. We also plan to ramp up our capital investment working capital of $225.9 million; Additional and exploration programs as we move forward with our growth and value $100.0M of liquidity at June 30, 2025, through creation plans for Porcupine.”

undrawn credit facility

1. Example of Non-GAAP measure. See the section in this press release entitled, “NON-GAAP MEASURES” for more information.

2. Operating cash costs and AISC include results from the Hoyle Pond and Borden operating mines, as well as corporate expenditures where applicable.

They do not include operating costs, capital expenditures, or gold ounces sold from Pamour, which is a capital project that continues to ramp up towards commercial levels of production.

3. Site-level AISC excludes corporate G&A expense, share-based compensation costs and corporate-level sustaining capital expenditures.

SUMMARY OF Q2 2025 PERFORMANCE

Three months ended Six months ended

June 30,June 30,March 31June 30June 30,
20252024202520252025
Revenue$ 142,010 $- $- $ 142,010$-
Production costs$54,919--54,919-
Earnings before income taxes$24,510(5,138)(6,452) $18,058$(5,643)
Net earnings$5,534 $ (5,138) $ (6,452) $(918)$(5,643)
Basic earnings per share$0.01 $(0.01) $(0.02) $(0.00)$(0.01)
Diluted earnings per share$0.01 $(0.01) $(0.02) $(0.00)$(0.01)
Cash flow from operating activities$67,081 $ (8,543) $ (6,075) $61,005$ (11,014)
Cash investment on mine development and PPE$ (39,766) $ (2,141) $ (3,767) $ (43,533)$(5,448)

Three months ended Six months ended

June 30,June 30, March 31June 30June 30,
20252024202520252025
Tonnes milled508,791--508,791-
Average Grade (g/t Au)3.39--3.39-
Recovery (%)91.3%--91.3%-
Gold produced (oz)50,552--50,552-
Gold sold (oz)42,550--42,550-
Average realized price ($/oz sold)$3,337 $- $- $3,337 $-
Operating cash costs per ounce sold ($/oz)(1)(2)$1,334 $- $- $1,334 $-
AISC per ounce sold ($/oz)(1)(2)(3)$2,123 $- $- $2,123 $-
Adjusted net earnings(1)$28,434 $ (2,107) $ (3,046) $25,338 $(4,078)
Adjusted net earnings per share(1)$0.04 $(0.01) $ (0.01) $0.04 $(0.01)
Free cash flow(1)$27,314 $ (10,684) $ (9,842) $ 17,472 $(16,462)

(1) Example of Non-GAAP measure. See the section in this press release entitled, “NON-GAAP MEASURES” for more information.

(2) Consolidated operating cash costs per ounce sold and AISC per ounce sold include results from the Hoyle Pond and Borden operating mines, as well as corporate expenditures where applicable. They do not include operating costs, capital expenditures, or gold ounces sold from Pamour, which is a capital project that continues to ramp up towards commercial levels of production.

(3) YTD 2025 results exclude G&A expense, share-based compensation costs and sustaining capital expenditures and lease expense incurred prior to the April 15, 2025, the completion date of the Porcupine Acquisition.

Q2 2025

  • Revenue in Q2 2025 totaled $142.0 million that resulted from gold sales of 42,550 ounces at an average realized gold price1 of $3,337 per ounce.
  • EBITDA1,2 of $55.2 million compared to a loss before interest, taxes and depreciation and amortization of $5.1 million and $6.3 million in Q2 2024 and Q1 2025, respectively. The significant improvement in EBITDA performance resulted from revenue and earnings generated from gold sales following completion of the Porcupine Acquisition on April 15, 2025.
  • Net earnings totaled $5.5 million ($0.01 per basic share) versus a loss of $5.1 million ($0.01 per basic share) in Q2 2024 and net loss of $6.5 million ($0.02 per basic share) in Q1 2025.
  • Adjusted net earnings1 totaled $28.4 million ($0.04 per basic share) versus adjusted net loss of $3.0 million ($0.01 per basic share) in Q2 2024 and adjusted net loss of $3.0 million ($0.01 per basic share) the previous quarter; The difference between net earnings and adjusted net earnings reflected the after-tax impact of $16.6 million of acquisition-related costs, mainly for legal, consulting and advisory services, and other expenses, $6.8 million of foreign exchange losses and $2.4 million of transitionrelated costs involving the Porcupine Operations.
  • Solid operating performance in initial quarter of production at Porcupine (April 16, 2025, to June 30, 2025):
    • Production of 50,552 ounces, comprised of 16,112 ounces at Hoyle Pond, 27,286 ounces at Borden and 7,154 ounces at Pamour
    • Gold poured totaling 46,608 ounces, with gold sales of 42,550 ounces
    • Production costs of $54.9 million
    • Operating cash costs1 averaging $1,334 per ounce sold
    • All-in sustaining costs1 (“AISC”) averaging 2,123 per ounce sold; Site-level AISC averaging $1,872 per ounce sold (see the Operating Cash Costs and AISC tables in Non-GAAP Measures section near the end of this press release for more information).
  • Cash flows included net cash provided by operating activities of $67.1 million, which compared to net used by operations activities of $8.5 million and $6.1 million in Q2 2024 and Q1 2025, respectively.
  • Free cash flow1 totaled $27.3 million versus free cash flow of ($10.7) million in Q2 2024 and ($9.8) million in Q1 2025.
  • Capital expenditures1 totaled $44.2 million, with sustaining capital expenditures1 accounting for $16.1 million and growth capital expenditures1 totaling $28.1 million; Sustaining capital expenditures largely focused on capital development at Hoyle Pond and Borden and construction work to raise and buttress the No. 6 tailings impoundment area (“TMA”), while the $28.1 million of growth capital expenditures related to pre-stripping at Pamour, with the remainder largely related to longer-term investments at the TMA.

CAPITAL EXPENDITURES

$ thousands unless

otherwise statesHoyle PondBordenPamour Porcupine1Cordero CorporateTotal
Sustaining$5,743$9,032$-$14,775$-$1,347 $16,122
Growth1,8542,66522,33826,8571,196- 28,053
Total$7,597$11,697$22,338$41,632$1,196$1,347 $44,175

1. Capital expenditures incurred at Dome Mill and the TMA are allocated to Porcupine’s mining operations based on their proportion of mill fee provided to Dome Mill.

  • Cash at June 30, 2025 totaled $252.5 million reflecting approximately $475.0 million of gross proceeds ($468.7 million of net proceeds after share issue costs) from a financing package (the “Financing Package”) arranged in conjunction with the Porcupine Acquisition, as well as $67.1 million of net cash from operating activities generated during Q2 2025, partially offset by $200.6 million of cash consideration paid for the Porcupine Operations at closing, the $44.2 million of capital expenditures during Q2 2025, as well as the impact of $51.6 million of restricted cash related to letters of credit and cash collateral for government required financial assurances in relation to closure plans involving the Porcupine assets.

Change in Cash (March 31, 2025 - June 30, 2025)

$ Millions

468.7

(200.6)

252.5 (51.6)

(39.8)1 (1.8)

67.1 10.5

1. The difference between the $39.8 million of Acquisitions of mineral interests, property and equipment and total capital expenditures of $44.2 million relates to the timing of cash expenditures relative to the accrual of capital expenditures for accounting purposes.

  • Working capital1 at June 30, 2025, totaled $225.9 million as compared to working capital of $17.0 million at December 31, 2024. The working capital balance at June 30, 2025, reflected the significant increase in cash during Q2 2025 as well as higher levels of short-term trade and other receivables and inventories, offset by higher current liabilities, mainly accounts payable and accrued liabilities, reclamation liabilities, deferred revenue, current income tax and employee-related benefits.

YTD 2025

Discovery did not generate revenue or earnings from mine operations in Q1 2025 or YTD 2024.

  • Net loss for YTD 2025 totaled $0.9 million, or $0.00 per basic share, compared to net loss of $5.6 million, or $0.01 per basic share, in YTD 2024.
  • Adjusted net earnings1 and adjusted net earnings per basic share1 were $25.4 million and $0.04, respectively, which compared to adjusted net loss and adjusted net loss per basic share of $4.5 million and $0.01, respectively, in YTD 2024. The difference between net earnings and adjusted net earnings in YTD 2025 mainly reflected the exclusion from adjusted net earnings of the after-tax impact of $20.2 million of business development expenses related to the Porcupine Acquisition, $6.7 million of foreign exchange losses, as well as $2.4 of one-time transition-related costs.
  • EBITDA1,2 for YTD 2025 totaled $48.9 million versus a loss before interest, taxes and depreciation and amortization of $5.6 million in YTD 2024. The difference between net earnings and EBITDA mainly reflected the exclusion from EBITDA of $16.4 million of depletion and depreciation expense, $14.4 million of net finance costs, largely due to accretion expense from reclamation and deferred consideration and interest expense related to royalty agreements entered into with Franco-Nevada Corp. concurrent with the completion of the Porcupine Acquisition, and $19.0 million of income tax expense.
  • Net cash provided by operating activities in YTD 2025 totaled $61.0 million, while free cash flow1 totaled $17.5 million.
  • Total capital expenditures1 for YTD 2025 totaled $48.1 million, including $16.2 million of sustaining capital expenditures1, $31.1 million of growth capital expenditures1 and $0.8 million related to financial

leases. Sustaining capital expenditures were incurred during Q2 2025 following the completion of the Porcupine Acquisition. Of growth capital expenditures in YTD 2025, $26.9 million related to Porcupine, with $4.2 million related to Cordero, largely for land acquisition during Q1 2025.

(1) Example of Non-GAAP measure. See the section of this press release entitled, “NON-GAAP MEASURES” for more information.

(2) Refers to earnings before interest, taxes and depreciation and amortization.

INCOME STATEMENT SUMMARY

$ thousands unless otherwise statesThree months endedSix months ended
June 30,June 30,March 31June 30June 30,
20252024202520252025
Revenue$ 142,010 $- $- $ 142,010 $-
Production costs54,919--54,919-
Depletion and amortization16,384--16,384-
Royalties1,916--1,916-
Earnings from mining operations68,791--68,791-

Expenses

General and administration22,8771,8275,47428,3513,641
Exploration83010325855217
Share-based compensation1,9536921,1673,1201,346
Earnings (loss) from operations43,131(2,622)(6,666)36,465(5,204)

Other Other income (loss) (6,879) (3,012) 189 (6,690) (1,451) Finance items

Finance income (cost), net(11,742)49625(11,717)1,012
Earnings (loss) before taxes24,510(5,138)(6,452)18,058(5,643)
Income taxes expense (recovery)18,976--18,976-
Net earnings (loss)$5,534 $ (5,138) $(6,452) $(918) $ (5,643)
Basic earnings per share$0.01 $(0.01) $(0.02) $(0.00) $(0.01)
Diluted earnings per share$0.01 $(0.01) $(0.02) $(0.00) $(0.01)

Weighted average number of common shares outstanding (in 000’s)

Basic 735,616 397,570 401,122 569,293 396,771 Diluted 762,923 397,570 411,049 596,600 396,771

PORCUPINE OPERATIONS REVIEW

Discovery’s Porcupine Operations cover approximately 1,400 km2 in and near Timmins, Ontario. Porcupine consists of the Hoyle Pond, Pamour and Hollinger mine properties, the Dome mine property and milling facility, and numerous near-mine and regional exploration targets. The Complex also includes the Borden mine property and large land position near Chapleau, Ontario. Current operations include the Hoyle Pond and Borden underground mines, with the Pamour open-pit project currently ramping up towards commercial levels of production. All mineralization from the operating mines, and Pamour, is processed at Dome, including mineralization from Borden, which is trucked 190 km to the Dome Mill.

DOME MILL

The current Dome Mill was commissioned in 1988, with expansion projects being completed in 1995 and 2004. The mill consists of three-stage crushing, two parallel rod mill and ball mill circuits, a single leach and Carbon-in-Pulp circuit, followed by a carbon strip and electrowinning circuit. The Mill’s nameplate operating capacity is approximately 12,000 tonnes per day (approximately 4.3 million tonnes per annum). In recent years, the mill has operated at rates well below capacity levels, largely reflecting increased maintenance requirements which contributed to reduced availability and utilization rates, as well as production shortfalls from mining operations. Through investment programs launched following the closing of the Porcupine Acquisition, the Company is targeting a return to full capacity operations by 2028 or sooner.

Three months ended Dome Mill June 30, 2025 Total material milled (t) 508,791 Average Grade (g/t Au) 3.39 Recovery (%) 91.3% Gold produced (oz) 50,552 Gold poured (oz) 46,608 Gold sold (oz) 42,550 Milling operating costs ($ Millions) $ 12,861 Operating costs per tonne processed ($/tonne) $ 25.4

For the period April 16, 2025, to June 30, 2025, a total of 508,791 tonnes were processed at Dome Mill at an average grade of 3.39 g/t, with recovery rates averaging 91.3%. A total of 50,552 ounces of gold were produced over this period, with total gold poured of 46,608 ounces. Availability rates at the Dome Mill during Q2 2025 were impacted by a two-week maintenance shutdown, previously scheduled by the prior owner, for the purpose of replacing equipment in the thickening tank. The Company used the occasion of the shutdown to advance multiple other projects, primarily in the crushing, grinding and carbon handling circuits. Based on operating days during Q2 2025, mill throughput averaged approximately 8,500 tonnes per day. Mill operating costs during Q2 2025 totaled $12.9 million for an average of $25.4 per tonne processed. These costs are allocated to the mine operations based on a proportion of total tonnes processed basis.

For the purpose of segment reporting, capital expenditures1 for Dome Mill and the TMA are allocated to Hoyle Pond, Borden and Pamour based on a proportion of total tonnes processed basis. Capital expenditures allocated during Q2 2025 totaled $16.5 million. The majority of these capital expenditures related to the TMA, with work during the quarter largely focused on raising and buttressing the existing dam walls and constructing seepage collection systems.

HOYLE POND

Hoyle Pond Mine is an underground gold mining operation located within the Archean Abitibi Greenstone Belt approximately 20 km northeast of downtown Timmins, Ontario. Underground infrastructure includes two decline ramps, an 815-metre four-compartment shaft (“#1 Shaft”) and a 1,350 metre winze (the “#2 Winze”) with the deepest station being on the 1600-metre level. Underground production is trucked to the #2 Winze and is then hoisted to the 720 level, where it is sent by tram to the loading pocket of the #1 Shaft. Mineralization is then trucked approximately 17 km to Dome Mill. The mine began operations in 1985 and, since that time, has produced over 4.0 million ounces of gold.

Hoyle Pond June 30, 2025 Total material milled (t) 97,817 Average Grade (g/t Au) 5.50 Gold Contained (oz) 17,297 Recovery (%) 93.1% Gold produced (oz) 16,112 Gold sold (oz) 14,804 Development metres – operating 526 Development metres – capital 180

Production costs$20,870
Operating cash costs per ounce sold1$1,566
AISC per ounce sold1$2,036
Total capital expenditures1(in thousands)$7,597

(1) Example of Non-GAAP measure. See the section in this press release entitled, “NON-GAAP MEASURES” for more information.

Gold production at Hoyle Pond from April 16, 2025, to June 30, 2025, totaled 16,112 ounces, which resulted from 97,817 tonnes being processed at an average grade of 5.50 g/t and average recoveries of 93.1%. Production during the quarter was primarily from the Lower S Zone on the 1965 and 1985 levels. A total of 45,160 tonnes were mined from April 16, 2025, to the end of Q2 2025, for an average mining rate of 594 tonnes per day. During Q2 2025, 52,657 tonnes of stockpiled material from Hoyle Pond were milled, which resulted in higher than planned tonnes milled for the quarter and a lower than expected average grade. The Company does not anticipate processing significant amounts of low-grade stockpiles from Hoyle Pond during the second half of 2025.

Operating development metres during Q2 2025 were mainly focused on the main production areas in the Lower S Zone, as well as in areas of the Upper Mine, where production from narrow, high-grade veins is expected to commence during the second half of 2025. Capital development activities during the quarter mainly involved continuing to extend the main ramp to depth in the Lower S Zone.

Production costs, including mining and processing costs, in Q2 2025 totaled $20.9 million, with operating cash costs averaging $1,566 per ounce sold1. AISC1 for the quarter averaged $2,036 per ounce sold, which included $5.7 million of sustaining capital expenditures1, mainly related to capital development activities as well as Hoyle Pond’s allocation of capital expenditures1 related to the TMA.

BORDEN

Borden Mine is a ramp access underground mine located on a 1,000 km2 land position approximately 20 km east of Chapleau, Ontario. The deposit mine is located within the lower limb of an antiform in the Borden Lake Greenstone Belt. Production at Borden commenced in 2019 and, to date, approximately 600,000 ounces have been produced. Mining is carried out at Borden using the longhole stoping method with unconsolidated as well as cemented rock fill. Material is trucked from underground to surface and then from the mine site approximately 190 km to the Dome Mill.

Three months ended Borden June 30, 2025 Total material milled (t) 166,609 Average Grade (g/t Au) 5.62 Gold Contained (oz) 30,118 Recovery (%) 90.6% Gold produced (oz) 27,286 Gold sold (oz) 21,792 Development metres – operating 449 Development metres – capital 204

Production costs$22,038
Operating cash costs per ounce sold1$1,175
AISC per ounce sold1$1,621
Total capital expenditures1(in thousands)$11,697

Gold production at Borden from April 16, 2025, to June 30, 2025, totaled 27,286 ounces, which resulted from 166,609 tonnes being processed at an average grade of 5.62 g/t and average recoveries of 90.6%. Production during Q2 2025 was mainly in the West and Central zones. A total of 123,743 tonnes of mineralization were mined from April 16, 2025, to the end of Q2 2025, for an average mining rate of 1,628 tonnes per day. Mining rates are expected to increase in the second half of 2025 as investments in new trucks and other equipment results in improved availability and utilization rates.

Operating development during the quarter was mainly focused on the West, Central and Upper East Zones, with capital development metres primarily related to the continued advancement of the main ramp and the exploration drift on the 575 level.

Production costs in Q2 2025 totaled $22.0 million, with operating cash costs per ounce1 averaging $1,175 per ounce sold. AISC1 averaged $1,621 per ounce sold for the quarter. Sustaining capital expenditures1 totaled $9.0 million, with capital development accounting for $5.7 million and the remainder related to allocated TMA expenditures, as well as investments in infrastructure, including an upgrade of the slurry plant, and new equipment to optimize the mining fleet.

PAMOUR

Pamour mine, located approximately 20 km from downtown Timmins, first commenced underground mining in 1911 and was operated until 1996. Open-pit mining operations were initiated in 2006 and ceased in 2011. The project to re-develop and expand the Pamour open pit, and resume operations, commenced in 2023, with initial production achieved early in 2025 and project continuing to ramp up towards commercial production levels.

Pamour June 30, 2025 Total material milled (t) 244,366 Average Grade (g/t Au) 1.02 Gold Contained (oz) 7,976 Recovery (%) 89.7% Gold produced (oz) 7,154 Gold sold (oz) 6,051

Production costs$12,011
Operating cash costs per ounce sold1$2,051
AISC per ounce sold1$2,194
Total capital expenditures1(in thousands)$22,338

(1) Example of Non-GAAP measure. See the section in this press release entitled, “NON-GAAP MEASURES” for more information.

Gold production at Pamour from April 16, 2025, to June 30, 2025, totaled 7,154 ounces, which resulted from 244,366 tonnes being processed at an average grade of 1.02 g/t and average recoveries of 89.7%. Significant pre-stripping continued during Q2 2025 as the mine continued development towards full production. A total of 104,000 tonnes of mineralization and 2.7 million tonnes of waste were mined from April 16, 2025, to June 30, 2025. Mill feed during Q2 2025 was mainly from Bench 19 of the Phase 1 Open Pit, with production from Bench 13 commencing late in the quarter. Mill feed from Pamour is expected to increase significantly in the second half of 2025, with the strip ratio expected to average below 10:1 during the final quarter of the year. In addition to mine production, 132,000 tonnes were processed from stockpiles in Q2 2025 at an average grade of 1.10 g/t for 4,650 ounces. The stockpiles processed included material from both Pamour as well as from the Hollinger open pit, where mining ceased late in 2024.

Production costs in Q2 2025 totaled $12.0 million. Operating cash costs1 averaged $2,051 per ounce sold, while AISC1 averaged $2,194 per ounce sold. All capital expenditures1 at Pamour in Q2 2025 were growth capital expenditures1 and related mainly to pre-stripping and allocated TMA capital expenditures.

(1) Example of Non-GAAP measure. See the section in this press release entitled, “NON-GAAP MEASURES” for more information.

CORDERO OVERVIEW

The Cordero Project was acquired by Discovery in 2019. Since that time, the Company has invested over a $100.0 million in Mexico, conducting significant exploration drilling and technical analysis, leading to the release of multiple studies, most recently the Feasibility Study (“FS”) dated February 16 2024 and filed on SEDAR+ (www.sedarplus.ca) on March 28, 2024. The results of the FS confirmed Cordero to be one of the world’s largest undeveloped silver deposits, with the potential for large-scale production at low unit costs and that is capable of generating substantial free cash flow and attractive economic returns.

Key highlights of the FS include:

  • Average annual production of 37.0 million silver equivalent ounces (“AgEq”) over the first 12 years with a total project life of 19 years;
  • All-in sustaining costs1 averaging below $12.50 per AgEq ounce in Years 1 – 8;
  • Base-case after-tax net present value (“NPV”) of $1.2 billion (Base-case metal prices: Silver – $22.00 per ounce; Gold – $1,600 per ounce; Zinc – $1.20 per ounce; Lead – $1.00 per ounce);
  • Initial capital expenditures1 of $606.0 million (resulting in a NPV to capital ratio of 2:1);
  • Large-scale Mineral Reserve totaling 302.0 million ounces of silver, 840,000 ounces of gold, 5.2 billion pounds of zine and 3.0 billion pounds of lead;
  • Important socio-economic contribution to Mexico, including an initial investment of over $600 million, the creation of 2,500 jobs during development, and over 1,000 jobs during operations,

$4.0 billion in total procurement, all to remain within Mexico, and, assuming a fixed $35.00 per ounce silver price, total tax contributions within Mexico of $2.4 billion over the project life; and,

  • High levels of environmental responsibility and a commitment to contributing to the management of key social issues such as carbon reduction and water quality and availability.

Second Quarter 2025 Highlights

During Q2 2025, Discovery continued work on key initiatives to further de-risk the project, including:

  • Assessing the potential to use natural gas power sources versus the grid power supply;
  • Advancing geotechnical and other work related to the planned upgrade of the local water treatment plant; and,
  • Evaluating the potential to establish solar farms around the project site to contribute to the power supply required for mine development and operation.

OUTLOOK

With the closing of the Porcupine Acquisition on April 15, 2025, Discovery was transformed into a diversified North American-focused precious metals producer combining growing gold production in Northern Ontario, Canada, with one of the world’s largest silver development projects in Chihuahua State, Mexico. In Q2 2025, the Company commenced reporting gold production from the Hoyle Pond and Borden underground mines, as well as from the ramp up of gold production at the Pamour open-pit project.

Key priorities for the Porcupine Operations over the balance of 2025 include:

  • Implementing investment plans aimed at growing mining rates, increasing production levels and lowering unit costs at Hoyle Pond and Borden;
  • Ensuring the successful ramp up of production at Pamour;
  • Advancing studies on the TVZ zone, Dome Mine project and Dome Mill expansion; and,
  • Advancing numerous exploration opportunities at each of site, as well as at regional targets.

The Company is targeting a total of 140,000 metres of drilling in 2025. The goals for the drilling program include resource conversion at Hoyle Pond, Borden and Pamour, in support of establishing an initial reserve statement for the three mines during 2026. In addition, drilling will also target resource conversion at the Dome Mine as part of a study to update the Inferred Mineral Resource included in the technical report filed on SEDAR+ on January 28, 2025 entitled, “Porcupine Complex, Ontario, Canada, Technical Report on Preliminary Economic Assessment.” The Company is also planning a drill program at the TVZ Zone with a goal of releasing an initial mineral resource in the first half of 2026.

As of the date of this press release, the Company is well capitalized to fund growth and optimization plans for Porcupine and current expenditure plans at Cordero with total cash of approximately $279.0 million.

In Mexico, following release of the Cordero FS, the Company has conducted a limited work program aimed at further advancing and de-risking the Project, with key areas of focus being power, water availability and management, permitting, and continuation of ESG and community outreach programs.

Following the completion of the land acquisition program in March 2025, the next major milestone for the Cordero will be approval of the Company’s Environmental Impact Assessment or MIA by SEMARNAT, which was submitted in August 2023. The MIA passed SEMARNAT’s legal review soon after its submission and was advanced for technical review. As of the date of this, the Company had completed the technical review process and was awaiting approval of the MIA. The Company remains confident that Cordero will receive MIA approval.

ABOUT DISCOVERY

Discovery is a growing North American-focused precious metals company. The Company has exposure to silver through its first asset, the 100%-owned Cordero project, one of the world’s largest undeveloped silver deposits, which is located close to infrastructure in a prolific mining belt in Chihuahua State, Mexico. On April 15, 2025, Discovery completed the acquisition of the Porcupine Complex from Newmont Corporation, transforming the Company into a new Canadian gold producer with multiple operations in one of the world’s most renowned gold camps in and near Timmins, Ontario. Discovery owns a dominant land position within the camp, with a large base of Mineral Resources remaining and substantial growth and exploration upside.

On Behalf of the Board of Directors,

Tony Makuch, P.Eng

President, CEO & Director

For further information contact:

Mark Utting, CFA

SVP Investor Relations Phone: 416-806-6298 Email: [email protected] Website: www.discoverysilver.com

QUALIFIED PERSON

The scientific and technical information in this press release was reviewed and approved by Pierre Rocque, P.Eng., Chief Operating Officer of the Company and Eric Kallio, P.Geo., Senior Vice President, Exploration of the Company, who are recognized as a Qualified Persons (“QPs”) under the guidelines of National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”).

NON-GAAP MEASURES

The Company has included certain non-GAAP measures in this press release, as detailed below. In the mining industry, these are common performance measures and ratios but may not be comparable to similar measures or ratios presented by other issuers and the non-GAAP measures and ratios do not have any standardized meaning. Accordingly, these measures and ratios are included to provide additional information and should not be considered in isolation or as a substitute for measures of performance prepared in accordance with IFRS Accounting Standards. These measures do not have any standardized meaning prescribed under IFRS and therefore may not be comparable to other issuers.

Free Cash Flow

Free Cash Flow is a non-GAAP performance measure that is calculated as cash flows from operations net of cash flows invested in mineral property, plant, and equipment and exploration and evaluation assets. The Company believes that this measure is useful to the external users in assessing the Company’s ability to generate cash flow after capital investments and build the cash resources of the Company.

Free cash flow is reconciled to the amounts include in the Consolidated Statements of Cash Flows as follows:

Three months ended Six months ended

June 30,June 30,March 31June 30June 30,
20252024202520252025
Net cash provided by operating activities$ 67,081 $ (8,543) $ (6,075) $61,005 $ (11,014)
Acquisition of mineral interests, plant and(39,766)(2,141)(3,767)(43,533)(5,448)

equipment Free cash flow $ 27,315 $ (10,684) $ (9,842) $ 17,472 $ (16,462)

Sustaining and Growth Capital

Sustaining capital and growth capital are non-GAAP measures. Sustaining capital is defined as capital required to maintain current operations at existing levels. Growth capital is defined as capital expenditures for major growth projects or enhancement capital for significant infrastructure improvements at existing operations. Both measurements are used by management to assess the effectiveness of investment programs.

Three months ended Six months ended

June 30,June 30,March 31June 30June 30,
20252024202520252025
Sustaining capital$16,122 $- $36 $16,158 $-
Growth capital28,0531,9353,09231,1455,563
Finance leases related to IFRS 1635-735771-
Total capital expenditures$44,211 $1,935 $3,863 $48,074 $5,563

Operating Cash Costs and Operating Cash Costs per Ounce Sold

Operating cash costs and operating cash costs per tonne and per ounce sold are non-GAAP measures. In the gold mining industry, these metrics are common performance measures but do not have any standardized meaning under GAAP. Operating cash costs include mine site operating costs such as mining, processing, administration and royalty expenses but exclude depreciation and depletion and reclamation costs. Operating cash cost per ounce sold is based on ounces sold and is calculated by dividing operating cash costs by volume of gold ounces sold.

The Company discloses operating cash costs and operating cash cost per tonne and per ounce as it believes the measures provide valuable assistance to investors and analysts in evaluating the Company’s operational performance and ability to generate cash flow. The most directly comparable measure prepared in accordance with GAAP is total production costs. Operating cash costs and operating cash costs per ounce of gold should not be considered in isolation or as a substitute for measures prepared in accordance with GAAP.

AISC and AISC per Ounce Sold

AISC and AISC per ounce are non-GAAP measures. These measures are intended to assist readers in evaluating the total costs of producing gold from current operations. While there is no standardized meaning across the industry for this measure, the Company’s definition conforms to the definition of AISC as set out by the World Gold Council in its guidance note dated June 27, 2013.

The Company defines AISC as the sum of operating costs (as defined and calculated above), sustaining capital, exploration expense, corporate expenses, lease payments relating to sustaining assets, and reclamation cost accretion and depreciation related to current operations. Corporate expenses include general and administrative expenses, net of transaction related costs, severance expenses for management changes and interest income. AISC excludes growth capital expenditures, growth exploration expenditures, reclamation cost accretion and depreciation not related to current operations, lease payments related to non-sustaining assets, interest expense, debt repayment and taxes.