Magna Mining Inc. (TSX-V: NICU) (OTCQX: MGMNF) (FSE: 8YD) is pleased to announce Q4 2025 production results from the McCreedy West Mine, located in the North Range of the Sudbury Basin, northeastern Ontario, Canada.

Highlights:

• During the quarter, McCreedy West produced 84,953 tons of ore from the 700 Copper Zone at an average grade of 1.31% copper, 0.23% nickel, 1.05 g/t platinum, 1.10 g/t palladium, 0.45 g/t gold and 15.51 g/t silver.
• Underground development during the quarter totaled 1,688 feet, in line with Company forecasts.
• Diamond drilling at McCreedy West during the quarter totaled 29,334 feet, an increase of 91% over Q3 2025.

Jeff Huffman, COO of Magna, stated, “Our team at McCreedy West excelled during the fourth quarter, safely mining and shipping 84,953 tons of ore to Vale’s Clarabelle mill in Sudbury. Underground mine development continued to be a focus and is now providing the increased operational flexibility we have been targeting. Magna’s development crews are now fully staffed and we no longer are using mining contractors for our underground development. The results of a Life of Mine (“LOM”) plan for McCreedy West, which will include our maiden reserve estimate, is expected to be released in the coming weeks in conjunction with our 2026 guidance.”

Quarterly production of 84,953 tons of ore represents an increase of 13% over Q3 as mining rates increased in November and December, following the compressed air system failure and the power related delays, which impacted operations during Q3 and early Q4. Access to stopes with high grade precious metals was achieved during Q4 and resulted in an increase in platinum, palladium, gold and silver grades compared to Q3. Underground development continued to be a focus during Q4, totalling 1,688 feet which was in line with expectations. With three underground drill rigs active at McCreedy West for the entire quarter, diamond drill footage increased to 29,334 feet, up 91% compared to Q3. The increase in diamond drilling will provide important geological information to support current mining operations, as well as longer term mine planning.

Jason Jessup, CEO of Magna commented, “We ended 2025 on a high note, with very strong fourth quarter production, combined with excellent development and diamond drilling footage. This has allowed us to remove low grade stopes from our mining plans and focus on quality production. Although copper is our most important metal at McCreedy West, our grades for gold, platinum and palladium during Q4 were more than double what we mined in Q3, and silver grades were up more than 40% during a period of strong precious metals prices. This highlights the unique polymetallic nature of Sudbury deposits, providing us the flexibility to tailor our mining operations to the prevailing commodity price trends. With copper prices near all-time highs and the recent rebound in nickel prices, McCreedy West has entered 2026 with fantastic operational and economic momentum. I need to thank the team at the mine for their commitment and dedication to safe production and continuous improvement at the operation. As we ended 2025, I reflected on what we set out to accomplish at our McCreedy West operation, which was to invest the capital and effort in the mine to set us up for success in 2026 and beyond. I believe we have accomplished this goal and 2026 will be an exciting year for Magna.”

Table 1: McCreedy West Mine Q4 2025 Tons Shipped and Grades¹

¹Grades for ore shipped during Q4 are preliminary in nature and subject to change upon final settlement with Vale’s Clarabelle mill.

Qualified Person

The scientific or technical information in this press release has been reviewed and approved by David King, M.Sc., P.Geo. Mr. King is the Senior Vice President, Exploration and Geoscience for Magna Mining Inc. and is a qualified person under Canadian National Instrument 43-101.

About Magna Mining Inc.

Magna Mining Inc. is a producing mining company with a strong portfolio of copper, nickel, and platinum group metals (PGM) assets located in the world-class Sudbury mining district of Ontario, Canada. The Company’s primary asset is the McCreedy West Mine, currently in production, supported by a pipeline of highly prospective past-producing properties including Levack, Crean Hill, Podolsky, and Shakespeare.

Magna Mining is strategically positioned to unlock long-term shareholder value through continued production, exploration upside, and near-term development opportunities across its asset base.