Mr. Al Fabbro reports

MIDNIGHT SUN INITIATES EXPLORATION ACROSS SOLWEZI PROJECT

The 2025 phase 1 exploration campaign is now under way on Midnight Sun Mining Corp.'s Solwezi project in Zambia. This phase of exploration has been designed to significantly advance all three of Midnight Sun's key target areas: Dumbwa, Kazhiba and Mitu. The exploration work will address sulphide copper targets at Dumbwa and both oxide and sulphide copper targets at Kazhiba and Mitu, following up on known mineralization as well as brand new targets generated in the 2024 exploration campaign at Kazhiba.

Midnight Sun's president and chief executive officer, Al Fabbro, stated: "We have launched an aggressive exploration program, intended to rapidly advance all three of our key targets. While our approach to exploration is measured, methodical and concise, it is also cost-effective, and we believe this phase of work can deliver maximum impact on those key targets and driving highly targeted follow-up drill programs at Dumbwa and Mitu. We are setting the stage for success at Dumbwa, with Kevin Bonel utilizing the same logical steps employed by his previous team at Lumwana, where they moved that analogous asset from Tier 2 to Tier 1 status in just 24 months, giving Barrick a world-class 1.62-billion-tonne, 0.52-per-cent-copper deposit. At Kazhiba, we are drilling to advance the scale of known oxide copper mineralization and testing a large, brand new target for sulphide copper mineralization. At Mitu, we are utilizing partial ionic leach sampling to cover the entire mineralized trend, directing drilling later this year. This is an incredibly exciting time at the Solwezi project as we seek to transform ideas into discoveries, and pushing Midnight Sun to the next level."

Dumbwa program details

An extensive dipole-dipole induced polarization (IP) geophysical survey will be utilized to test the 20-kilometre strike extent of the Dumbwa copper-in-soil anomaly to guide targeted drilling. This drilling will be scheduled to begin following the completion of the IP survey and interpretation of results. The survey is expected to produce an effective picture of the dip direction, depth of targeted geology and correlation of the geochemical anomaly at surface with sulphide copper mineralization at depth. The survey will have a line spacing of 500 metres with variable lengths from one kilometre to 2.5 kilometres for a total of 56 line kilometres.

Kazhiba program details

The results of the recently completed 2024 exploration program at Kazhiba confirmed high-grade oxide copper mineralization in drill intercepts, identified mineralized extensions to the initial oxide copper zone, and highlighted significant new sulphide and oxide copper targets (see news releases dated Jan. 29, 2025, and Feb. 27, 2025). The 2025 phase 1 exploration campaign will follow up on the 2024 program, with continued drilling on extensions of the high-grade transported oxide copper blanket and addressing the new geochemical and geophysical targets with a combination of drilling and additional IP lines.

Approximately 4,000 metres of reverse circulation drilling across 125 holes are planned to both follow up on potential extensions of oxide mineralization indicated by the 2024 drill campaign as well as test the three new oxide copper targets identified by partial ionic leach sampling.

Six to eight diamond drill holes totalling approximately 1,000 metres are planned on the recently identified, approximately four-kilometre-by-two-kilometre Kazhiba sulphide copper target. This target has demonstrated a significantly elevated copper signature in partial ionic leach testing, coupled with high-chargeability/low-resistivity responses from IP geophysics, coinciding with a subtle traditional geochemical response, and situated in geology consistent with most deposits within the Zambian Copperbelt. This correlation of key characteristics has led the company to theorize that this is a very strong target for the discovery of a copper-mineralized stratigraphic unit and the potential sulphide source of the transported oxide material discovered on the Kazhiba licence.

Mitu program details

At Mitu, an extensive partial ionic leach sampling program will be launched to test the entire Mitu trend along the western flank of the Solwezi dome. Given the positive results generated using partial ionic leach sampling at Kazhiba, the company plans to collect approximately 1,800 samples for partial ionic leach analysis along the entire Mitu target trend. Mitu has similar regolith to Kazhiba, which is generally unresponsive to traditional geochemical analysis, so partial ionic leach is expected to more effectively identify and track further copper targets.

Oxide and sulphide copper mineralization has previously been identified at Mitu, and the partial ionic leach sampling program will cover all highly prospective geology, the results of which will drive a follow-up IP survey to finalize drill targets on each of the identified mineralized zones for follow-up drilling later in the year.

Qualified person

Darin Labrenz, PGeo, a qualified person under National Instrument 43-101, has reviewed and approved the technical data and contents of this release.

About Midnight Sun Mining Corp.

Midnight Sun is focused on exploring its flagship Solwezi project, located in Zambia. Situated in the heart of the Zambia-Congo Copperbelt, the second-largest copper-producing region in the world, Midnight Sun's property is vast and highly prospective. The company's 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 its credit, Midnight Sun's goal is to find and develop Zambia's next generational copper deposit.

We seek Safe Harbor.