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LUCA.V ·

LUCA Announces US$4.5 Million of Net Earnings IN Q1 2025

Financials

Luca Mining Corp.

Suite 410, 1111 Melville Street

Vancouver, BC, V6E 3V6, Canada

NEWS RELEASE

LUCA ANNOUNCES US$4.5 MILLION OF

NET EARNINGS IN Q1 2025

Vancouver, British Columbia, May 28, 2025

Luca Mining Corp. (“Luca” or the “Company”) (TSX-V: LUCA; OTCQX: LUCMF; Frankfurt: Z68) is pleased to

report an exceptional first quarter of 2025 with $4.5 million in net earnings, $7.6 million in EBITDA and

$11.7 million in free cash flow before working capital items . All amounts are in U.S. dollars unless

otherwise indicated.

Highlights from the first quarter are as follows:

• In health and safety, the Company reported a TRIFR (total recordable injuries frequency rate) of

0.87, improvement over the prior year and achieved 1,000,000 hours of no lost time incidents at

Campo Morado in the first quarter of 2025.

• Record revenues, up 117% from the same quarter in the previous year to over $47.4 million.

• Positive EBITDA of $7.6 million and adjusted EBITDA of $12.7 million.

• Positive free cashflow before working capital items increased significantly to $11.7 million.

Luca Mining Corp.

Suite 410, 1111 Melville Street

Vancouver, BC, V6E 3V6, Canada

• Record consolidated gold equivalent production of 21,293 ounces, a 5 1% increase compared to

Q1 2024, supported by higher throughput and improved head grades at both Campo Morado and

Tahuehueto.

• Strong throughput growth, with a 55% increase in tonnes milled year -over-year to 246,282

tonnes, Campo Morado processed 175,334 tonnes (+40%), while Tahuehueto more than doubled

to 70,948 tonnes.

• Gold production reached 7,677 ounces, up 79% from Q1 2024, alongside increases of 69% in silver

and 71% in zinc, reflecting higher grades and volumes at both mines.

• Lead and copper production increased 65% and 44%, respectively, year over year, supporting

broader metal output diversification and revenue growth.

• Campo Morado sustained a near 2,000 tpd processing rate, supported by over 1,800 meters of

mine development and improved haulage capacity with new trucks and ramp access.

• Tahuehueto gold equivalent production increased 90%, reaching 6,937 ounces, despite

underground development delays, highlighting operational resilience and plant stability.

• All-in sustaining cost (AISC) per AuEq ounce sold remained controlled at $2,251, up just 9% from

the prior year despite inflationary pressures and ramp-up expenses.

• Since January 1, 2025, the Company has paid down $8.4 million against its debt facilities, resulting

in a current debt balance of $8.5 million. Luca's total cash and cash equivalents balance (including

silver bullion on hand) is currently $24.6 million.

Dan Barnholden, CEO, commented, “Our Q1 results are the product of a solid operational foundation laid

over the course of 2024. Going forward, I expect our financial and operational results to demonstrate our

commitment to continuous improvement at both of our mines. We have set the table for a

transformational year and our results, announced today, are indicative of what Luca is capable of.”

Luca Mining Corp.

Suite 410, 1111 Melville Street

Vancouver, BC, V6E 3V6, Canada

The consolidated f inancial and operati ng results for the three months ended March 31, 2025, are

summarized below.

Luca Mining Corp.

Suite 410, 1111 Melville Street

Vancouver, BC, V6E 3V6, Canada

Operating metrics for the Campo Morado and Tahuehueto mines for the first quarter period ended March

31, 2025, are summarized below.

Exploration Continues to Yield Promising Results for Resource Expansion

Drilling is underway at both the Campo Morado and Tahuehueto mines with the objective to delineate

additional near mine resources to add to the mine plan. T he Company is also planning to drill fa rther

afield to test the district scale potential of its properties.

Campo Morado

Drillhole CMUG-25-012 drilled 3.8 metres (“m”) of 12.54 g/t AuEq (3.8m of 5.4 g/t Au, 288 g/t Ag, 0.8%

Cu, 2.2% Pb and 6.4% Zn) within a wider 15.8m of 4.87 g/t AuEq (2.2 g/t Au, 109 g/t Ag, 0.3% Cu. 0.8% Pb

and 2.4% Zn) representing the discovery of a new mineralized zone within the G9 Deposit (See Company

News Release Dated May 12, 2025).

Nineteen underground drillholes have been completed to date as part of a 5,000m Phase 1 program

targeting near-mine resource expansion. Untapped high -grade mineral potential close to existing mine

workings continues to be identified in under drilled zones – results to inform updated mineral resource

and mine plans.

In addition, surface drilling is underway to test property-wide targets including Reforma and El Rey – first

exploration at these deposits since 2010. Campo Morado hosts a large cluster of polymetallic massive

sulphide deposits containing gold, silver, zinc, copper, and lead mineralization within a highly prospective

land package totaling over 121 square kilometres within the Sierra Madre del Sur mineral belt.

Luca Mining Corp.

Suite 410, 1111 Melville Street

Vancouver, BC, V6E 3V6, Canada

Tahuehueto

At Tahuehueto, a new high-grade breccia mineralized shoot was discovered within the El Creston vein

system located approximately 60m below the active mine workings of Level 23 . The discovery drill hole

returned 9.4m of 5.21 g/t AuEq within a larger 13.9m zone of 3.90 g/t AuEq (See Company News Release

dated May 5, 2025).

An additional new high-grade breccia mineralized shoot was discovered at an untested area of the Creston

FW Vein north of the current underground workings, with three new drill holes returning results including:

4.8m of 5.62 g/t AuEq, 6.9m of 4.10 g/t AuEq and 5.1m of 5.62 g/t AuEq, including 2.4m of 9.37 g/t AuEq.

Twenty-three underground drillholes have been completed to date including over 550m of a planned

5,000m Phase 2 underground drilling program targeting near- mine resource expansion . Additional

mineral potential was identified in underexplored zones and the results will inform updated mineral

resource and near and medium term Tahuehueto mine plans.

Surface drilling has begun at the Santiago deposit which is one of 18 identified mineralized veins on the

Tahuehueto Property and has been prioritized for additional exploration for its favourable geology,

shallow setting and historic mineral resource.

The Company intends to carry on and expand its exploration efforts based upon the successful initial

drilling results at Campo Morado and Tahuehueto . Multiple, untested priority targets exist at both

projects.

Cash Generation

As planned, the Company has been steadily reducing its debt and since January 1, 2025, the Company has

paid down $8.4 million against its debt facilities, resulting in a current debt balance of $8.5 million. Luca's

total cash and cash equivalents balance (including silver bullion on hand) is currently $ 24.6 million and

growing, as strong cash flow from operations continues and further warrant exercises are expected.

Luca is in a unique position to benefit from the continuing strong commodity demand cycle with its

diversified metal production profile. Along with its strong and growing cash balance, debt elimination in

2026, and expanding production levels, the Company is set for another quarter and beyond of exceptional

performance.

Inclusion in Solactive Index Fund

Luca has met the inclusion criteria and has been added to the Solactive Global Copper Miners Total Return

Index, with an inclusion date of May 1, 2025. This index is tracked by the Global X Copper Miners ETF

(COPX). Further information is available on the respective websites for Solactive and Global X.

Proactive and Successful Health and Safety Record

The Company is proud of its outstanding health and safety record , having recently celebrated a major

milestone of one million hours without a Lost Time Incident at Campo Morado.

Luca Mining Corp.

Suite 410, 1111 Melville Street

Vancouver, BC, V6E 3V6, Canada

This achievement underscores the Company's unwavering commitment to safety and operational

excellence and is a testament to the dedication, professionalism and teamwork of our operations team.

Their commitment to high safety standards, clear communication and collaboration made this possible.

Maintaining a safe and efficient work environment is a key pillar of the Company's sustainability and

operational strategy. Luca continually invests in comprehensive safety training, rigorous protocols and

advanced monitoring systems to protect the health and well-being of the Company's workforce at both

the Campo Morado and Tahuehueto mines.

As a conscientious mining entity, Luca recognizes the paramount importance of the Health and Safety of

our employees and the significance of Environmental, Social, and Governance considerations in all aspects

of its operations. Our four key pillars of responsible and sustainable mining operations are 1) Health and

Safety, 2) Environmental Stewardship, 3) People, Community and Culture and 4) Governance & Ethics.

About Luca Mining Corp.

Luca Mining Corp. (TSX-V: LUCA, OTCQX: LUCMF, Frankfurt: Z68) is a Canadian mining company with two

wholly owned mines located in the prolific Sierra Madre mineral belt in Mexico. These mines produce

gold, copper, zinc, silver, and lead and generate strong cash flow. Both mines have considerable

development and resource upside as well as tremendous exploration potential.

The Company's Campo Morado Mine hosts VMS -style, polymetallic mineralization within a large land

package comprising 121 sq km. It is an underground operation, producing gold, silver, copper, zinc, and

lead. The mine is located in Guerrero State.

The Tahuehueto Mine is a large property of over 75 sq km in Durango State. The project hosts epithermal

gold and silver vein -style mineralization. Tahuehueto is a newly constructed underground mining

operation producing primarily gold and silver. The Company has successfully commissioned its mill and is

now in commercial production.

For more information, please visit: www.lucamining.com

On Behalf of the Board of Directors

(signed) “Dan Barnholden”

Dan Barnholden, CEO

Qualified Persons

The scientific and technical information contained in this press release relating to the Company’s mines

and mineral projects has been reviewed and approved by Mr. Ramon Mendoza Reyes, P.Eng., a Qualified

Person within the meaning of National Instrument 43-101, “Standards for Disclosure of Mineral Projects.”

The scientific and technical information contained in this press release relating to the Company’s geology

Luca Mining Corp.

Suite 410, 1111 Melville Street

Vancouver, BC, V6E 3V6, Canada

and exploration projects has been reviewed and approved by Mr. Paul D. Gray, P.Geo., a Qualified Person

within the meaning of National Instrument 43-101, “Standards for Disclosure of Mineral Projects.”

Cautionary Note Regarding Production Decisions and Forward-Looking Statements

Statements contained in this news release that are not historical facts are "forward -looking information" or

"forward-looking statements" (collectively, "Forward -Looking Information") within the meaning of applicable

Canadian securities laws. Forward Looking Information includes, but is not limited to, estimated production

guidelines for 2025 and other possible events, conditions or performance that are based on assumptions about the

proposed exploration program and its anticipated results; the timing and costs of future activities on the Company's

properties, such as production rates and increases and sustaining capital expenditures; success of exploration,

development, and metres to be drilled in exploration on the Tahuehueto Mine site and the Campo Morado Mine

site. In certain cases, Forward -Looking Information can be identified using words and phrases such as "plans","

expects", "scheduled", "estimates", "forecasts", "intends", "anticipates" or variations of such words and phrases. In

preparing the Forward -Looking Information in this news release, the Company has applied several material

assumptions, including, but not limited to, that the Company will be able to raise additional capital as necessary; the

current exploration, development, environmental and other objectives concerning the Tahuehueto Mine can be

achieved; that consistent and sustain able mill feed at Campo Morado Mine will be achieved; the continuity of the

price of gold and other metals and economic and political conditions. Forward -Looking Information involves known

and unknown risks, uncertainties and other factors which may cause the actual results, performance, or

achievements of the Company to be materially different from any future results, performance or achievements

expressed or implied by the Forward- Looking Information. There can be no assurance that Forward -Looking

Information will prove to be accurate, as actual results and future events could differ materially from those

anticipated in such statements. Accordingly, readers should not place undue reliance on Forward- Looking

Information. Except as required by law, the Company does not assume any obligation to release publicly any

revisions to Forward-Looking Information contained in this news release to reflect events or circumstances after the

date hereof or to reflect the occurrence of unanticipated events.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the

TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

For further information about Luca Mining Corp., please contact:

Sophia Shane

Director of Investor Relations

[email protected]

or

Glen Sandwell

Corporate Communications Manager

[email protected]

Tel: +1 (604) 684-8071

Non-IFRS Financial Measures

The Company has disclosed certain non -IFRS financial measures and ratios in this news release , as

discussed below. 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

Luca Mining Corp.

Suite 410, 1111 Melville Street

Vancouver, BC, V6E 3V6, Canada

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.

Non-IFRS financial measures are defined in National Instrument 52-112 – Non-GAAP and Other Financial

Measures Disclosure (“NI 52 - 122”) as a financial measure disclosed that (a) depicts the historical or

expected future financial performance, financial position or cash flow of an entity, (b) with respect to its

composition, excludes an amo unt that is included in, or includes an amount that is excluded from, the

composition of the most directly comparable financial measure disclosed in the primary financial

statements of the entity, (c) is not disclosed in the financial statements of the entity, and (d) is not a ratio,

fraction, percentage or similar representation.

A non-IFRS ratio is defined by 52 -112 as a financial measure disclosed that (a) is in the form of a ratio ,

fraction, percentage or similar representation, (b) has a non-IFRS financial measure as one or more of its

components, and (c) is not disclosed in the financial statements.