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Midnight Sun Makes Strategic Acquisition of Luswishi Dome Project Midnight Sun enters into an Earn-In Agreement to acquire the Luswishi Dome Project, located approximately 40 kilometers southeast of the Solwezi Project, in

Mergers & Acquisitions Property Options & Staking

Midnight Sun Makes Strategic Acquisition of Luswishi Dome

Project

Midnight Sun enters into an Earn-In Agreement to acquire the Luswishi Dome

Project, located approximately 40 kilometers southeast of the Solwezi Project, in

the Domes Region of Zambia

Vancouver, British Columbia, May 28th, 2025 - Midnight Sun Mining Corp. (TSXV: MMA /

OTC: MDNGF) (“Midnight Sun” or the “Company”) is pleased to announce that the Company

has entered into an Earn- In and Operating Agreement (the “Earn -In Agreement”) with

Zambezi Mint Investment Limited regarding the 366 square kilometre Luswishi Dome

Project, located approximately 40 kilometres southeast of the Company’s Solwezi Project, in

Zambia.

Midnight Sun’s President & CEO, Al Fabbro, states “The presence of domal structures has

long been recognized as a hallmark of major copper discoveries in the region, and it is exactly

what led us to our Solwezi Project over a decade ago. This same geological feature underpins

the world-class deposits and operating mines surrounding us, including Barrick’s Lumwana

Mine, First Quantum’s Kansanshi and Sentinel Mines , and Ivanhoe’s Kamoa -Kakula -- all

excellent examples of world-class domes deposits.

So, when Midnight Sun had the rare opportunity to secure what may be the last remaining

Dome in the district not already controlled by a major or us, we moved quickly. The project

boasts not only a highly prospective geological setting, but also an exceptional historical data

package from previous operators. This head start allows us to fast-track exploration, saving

both time and capital as we drive the Luswishi Project toward drilling and discovery.

This acquisition strengthens our position in a highly competitive district and aligns with our

strategy of targeting high-impact assets with near-term discovery potential. Midnight Sun is

firmly positioned as a leading explorer in Zambia.”

*Location map for the Luswishi Project provided below.

Terms of the Earn-In Agreement

The Earn-In Agreement consists of three stages:

Stage 1: To earn an initial 51% ownership of the licence, Midnight Sun must complete CAD

$750,000 worth of exploration and development expenditures on the licence w ithin 24

months of the agreement date.

Stage 2: To earn an additional 19% (70% cumulative ownership) of the licence, Midnight Sun

can sole fund an NI 43 -101 compliant inferred mineral resource within 24 months of the

completion of Stage 1.

Stage 3: To earn an additional 10% (80% cumulative ownership) of the licence, Midnight Sun

can sole fund a pre-feasibility study within 36 months of the completion of Stage 2.

Midnight Sun has the right, but not the obligation, to complete an y of the stages and there

is no firm spend.

Qualified Person: Darin Labrenz, P.Geo., a Qualified Person under NI 43 -101, has reviewed

and approved the technical data and contents of this release.

About Midnight Sun

Midnight Sun is focused on exploring our flagship Solwezi Project, located in Zambia.

Situated in the heart of the Zambia-Congo Copperbelt, the second largest copper producing

region in the world, our property is vast and highly prospective. Our Solwezi Project is

surrounded by world-class producing copper mines, including Africa’s largest copper mining

complex right next door, First Quantum’s Kansanshi Mine. Led by an experienced geological

team with multiple discoveries and mines around the world to their credit, Midnight Sun’s

goal is to find and develop Zambia’s next generational copper deposit.

ON BEHALF OF THE BOARD OF MIDNIGHT SUN MINING CORP.

Al Fabbro

President & CEO

For Further Information Contact:

Adrian O’Brien

Director of Marketing and Communications

Tel: +1 604 809 6890

Em: [email protected]

NEITHER THE 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 NEWS RELEASE.

This news release contains “forward-looking statements” within the meaning of the applicable Canadian

securities legislation that are based on expectations, estimates, assumptions and projections as at the date

of this news release. The re is no guarantee of the Company completing any stage of the Earn- In

Agreement, and, as such, any information in this news release regarding the timing of earn-in stages;

expenditure amounts or work-product; the respective ownership interests of the Company in the licence ;

and any other information herein that is not a historical fact may be “forward looking statements ”. Any

statement that involves discussions with respect to predictions, expectations, beliefs, plans, projections,

objectives, assumptions, future events or performance ( which may, but not always, include phrases such

as “anticipates”, “plans”, “scheduled”, “believed” or “intends” or variations of such words and phrases or

stating that certain actions, events or results “may” or “could”, “would”, “might” or “wil l” be taken to

occur or be achieved) are not statements of historical fact and may be forward- looking statements and

are intended to identify forward-looking statements.

Although the forward- looking statements contained in this news release are based upon what

management believes, or believed at the time, to be reasonable assumptions, the Company cannot assure

readers that actual results will be consistent with such forward-looking statements, as there may be other

factors that cause results not to be as ant icipated, estimated or intended. Such factors include, among

others, risks relating to the timing and ability to obtain the approval of relevant regulatory bodies, if at all;

risks relating to property intere sts; risks related to access to the project; risks inherent in mineral

exploration, including the fact that any particular phase of exploration may be unsuccessful; geo-political

risks; the global economic climate; metal prices; environmental risks; political risks; and community and

non-governmental actions. N either the Company nor any other person assumes responsibility for the

accuracy and completeness of any such forward- looking statements. The Company does not undertake,

and assumes no obligation, to update or revise any such forward- looking statements or forward-looking

information contained herein to reflect new events or circumstances, except as may be required by law.