Midnight Sun drills 14.86 m of 7.39% Cu at Kazhiba Main

Mr. Al Fabbro reports MIDNIGHT SUN INTERCEPTS 7.39% CU OVER 14.86M INCLUDING 16.9% CU OVER 4M AT KAZHIBA MAIN Midnight Sun Mining Corp. has released initial assay results, representing eight diamond drill holes from the 2025 drilling campaign on the Kazhiba Main target, have been received. This drilling has intercepted new zones of significant oxide copper mineralization within the existing mineralized footprint, including hole MSZ-25-029E which intercepted 7.39 per cent copper over 14.86 metres including 16.9 per cent over four m extending from 17 m to 31.86 m depth. Continuing diamond drilling is part of a due diligence component of the oxide drill program, bracketing several previously drilled reverse circulation (RC) holes. The 2025 resource edge definition campaign at Kazhiba-Main is now complete, with 163 holes totalling 5,243 m. Assays for the 2025 RC program are pending and will be incorporated into a maiden National Instrument 43-101 resource estimate, with expected completion in Q4 2025. Diamond drilling at Kazhiba Main is expected to continue through the end of November, 2025. Midnight Sun's president and chief executive officer, Al Fabbro, states: "We are quickly and systematically marching Kazhiba toward a maiden resource, due before the end of the year. Kazhiba Main is an extraordinary, high-grade, near-surface opportunity, and our team has taken all the right steps to properly define this unique, highly variable, oxide copper deposit. A key part of that process is the necessary due diligence required to establish a solid understanding of the mineralized footprint, including the diamond redrill which is being completed expeditiously. Not only is it providing the necessary data, but also giving us some impressive results along the way, and further expanding the incredible opportunity at Kazhiba." The 2025 Kazhiba-Main drilling program was designed to follow up the 2024 RC drilling program by further defining the mineralized footprint and exploring for expansion potential of the mineralized area. The company also launched a due diligence diamond drilling campaign within the mineralized footprint to test and verify several intervals from the 2024 RC drilling campaign at Kazhiba Main. The company also announces that the Kazhiba East RC drilling program is now under way. The Kazhiba East drilling program is designed to test three partial ionic leach soil sample copper anomalies from the 2024 campaign and is planned to comprise a total of 100 RC drill holes. The three Kazhiba East target areas have the same characteristics and geological profile as Kazhiba Main, thus representing expansion potential for more near-surface oxide resources at Kazhiba. 2025 resource upgrade and due diligence diamond drilling at Kazhiba Main During the 2024 RC drilling program, the company completed 58 drill holes which returned high-grade intervals including: 10.69 per cent copper over 21.0 metres from drill hole MSZ22-028; 5.60 per cent copper over 26.0 metres from drill hole MSZ22-020; 3.01 per cent copper over 15.0 metres from drill hole MSZ22-012; 4.66 per cent copper over 7.0 metres from drill hole MSZ22-030. A number of drill intervals with no sample return were reported in 2024 and were interpreted as potential cavities within the mineralized footprint. However, Midnight Sun's geological team identified the improbability of the reported subsurface cavities where no material was being returned. It was confirmed that the drilling contractor encountered technical issues while drilling wet soils which led to the misidentification of these sections as voids. The drilling contractor was instructed to implement a due-diligence diamond redrill program whereby 41 holes are being redrilled by diamond drilling methods to obtain a complete soil profile and verify mineralization, rectifying the sampling issue at the driller's cost. Early observations are that the voids do not exist and, in some cases, may in fact be significant copper intercepts. The company expects positive results from the due diligence diamond drilling to have a significant impact on the maiden resource estimate. Quality control/quality assurance Drilling was conducted using a conventional diamond drilling rig and drill core was captured for the entirety of each hole and placed into plastic core trays. All drill holes were cored in PQ size and sampling was conducted over the entire hole on one-metre intervals while honouring any important lithological boundaries. Unconsolidated soils were split in half by hand inside each core box, while bedrock was cut in house using a diamond saw and the right half of core was selected for sampling. All samples were placed into a 200-micron plastic bag, assigned a unique sample number and recorded into GeoSpark logging system. Samples always remained under the supervision of Midnight Sun staff to maintain chain of custody. All samples were then delivered to SGS Labs located in Kalulushi, Zambia, a fully accredited laboratory. Once received, the samples are sorted, dried, crushed and pulverized (SGS code PRP90) followed by a single-acid digest with AAS finish (SGS code AAS72C). Copper range of detection is 0.01 to 20 per cent. Overlimit samples were rerun by Electrogravimetric method whereby electrolysis of Cu occurs from a digested one-gram charge and is finished electro-gravimetrically (SGS procedure ELC13GD). Midnight Sun follows an in-house QA/QC (quality assurance/quality control) program that consists of a random insertion every 10th sample of either a coarse blank, fine blank, coarse duplicate, fine duplicate or certified reference material (standards). Qualified person: Darin Labrenz, PGeo, a consulting geologist for the company and 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, the company's property is vast and highly prospective. The company's Solwezi project is surrounded by 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. We seek Safe Harbor.