Announcement • Jun 10
Borealis Mining Company Limited Commences 5,000 Metre Drilling Program At Sandman Gold Project Borealis Mining Company Limited announced the commencement of a 5,000 metre drilling program at its wholly-owned Sandman Gold Project in Humboldt County, Nevada. Drilling is expected to begin on or about June 19th, 2026 and continue for several months. The program represents the next phase in advancing Sandman toward development and is designed to generate the technical information required to support future engineering studies, mine planning, and permitting activities while continuing to evaluate opportunities to expand the project’s resource base. Approximately 1,660 metres of the program will be dedicated to metallurgical and geotechnical drilling across the Silica Ridge, North Hill, Abel Knoll, and Southeast Pediment deposits, with the balance of the program focused on resource expansion and exploration drilling. The initial phase is intended to generate critical engineering, mine planning, and permitting data, while the second phase will evaluate opportunities to expand existing resources and test new exploration targets throughout the district. Sandman is an advanced-stage gold project located approximately 25 kilometres northwest of Winnemucca, Nevada. The project hosts a pit-constrained mineral resource containing 433,000 ounces of gold in the Indicated category grading 0.73 g/t gold and 60,800 ounces of gold in the Inferred category grading 0.58 g/t gold. The resource includes approximately 300,600 ounces of oxide gold, representing a significant portion of the project’s potential heap-leach feed, and is distributed across four principal deposits: Silica Ridge, North Hill, Abel Knoll, and Southeast Pediment. A Preliminary Economic Assessment completed earlier this year demonstrated robust economics, including an after-tax NPV(6%) of approximately USD 203 million and an IRR of approximately 105% at a gold price of USD 2,600 per ounce. The PEA outlines a conventional open-pit, heap-leach operation producing approximately 38,000 ounces of gold annually over a nine-year mine life. The initial phase of drilling will focus on metallurgical and geotechnical testing across each of the four deposits. Metallurgical drilling will provide representative samples for recovery testing and future process optimization studies, while geotechnical drilling will collect information required for pit slope design, mine planning, infrastructure layout, and permitting activities. The Company believes this work will provide a critical technical foundation for evaluating future development scenarios at Sandman and advancing the project through key engineering and permitting milestones. The data generated from the program is expected to support future technical studies while helping define a potential pathway toward production. Following completion of the metallurgical and geotechnical program, Borealis plans to allocate the remaining metres toward resource expansion and exploration drilling. The program will test extensions of known mineralization adjacent to existing deposits and evaluate several high-priority exploration targets identified through compilation of historical exploration data and recent geological interpretation. Announcement • Jan 21
Borealis Mining Company Limited Commences Mobilization of Mining Equipment At the Borealis Gold Mine in Nevada Borealis Mining Company Limited announced that mobilization of mining equipment has commenced at the Borealis Gold Mine in Nevada, marking a key milestone toward the restart of gold mining operations. Heavy mining equipment, production drill rigs and support equipment are now arriving on site as the Company prepares for initial mining activities. Borealis has engaged Ledcor CMI Inc. ("Ledcor") as its mining contractor. Ledcor is a well-established North American mining and construction contractor with extensive experience in open-pit mining operations, including multiple projects in Nevada. Under the current scope of work, Ledcor will be responsible for mine development, production drilling and blasting, material movement, crushing, stacking on the leach pad, and ongoing operational support as the project progresses toward production. Safety remains a core operational priority for Borealis, and in 2025 Borealis personnel and contractors collectively worked a total of 37,461 hours without a lost-time injury (LTI), reflecting the Company's commitment to disciplined site execution and a strong safety culture. In parallel with site mobilization, Borealis commenced confirmatory drilling at the Borealis Mine in early January. This drilling program is designed to validate historical data, refine grade control, and support short-term mine planning ahead of initial mining activities. Site activities over the coming weeks will focus on equipment commissioning, final site preparations, and the commencement of production drilling, with the first production blast anticipated to occur in the coming weeks, subject to final scheduling and operational readiness. The Borealis Mine is a fully permitted, past-producing open-pit gold mine located in Nevada. Technical information contained in this press release has been reviewed and approved by Kelly Malcolm, P.Geo., a non-independent Qualified Person as defined under National Instrument 43-101. Borealis Mine. The Borealis mine property, located close to the town of Hawthorne, NV, is fully equipped for present mine operations and future expansion, with existing open pits, heap leach pads, modern infrastructure, and a functional ADR facility which produces dore bars. The project has historically produced over 600,0001 ounces of gold from an open pit heap leach operation. It is an under-explored property and has not been drilled since 2011, aside from Borealis' efforts in 2024 and 2025. The property possesses high grade expansion potential with robust historical drilling results, along with a number of untested regional targets. The Borealis Project holds existing federal and state permits for mining and processing operations. However, certain permit modifications may be required for expanded production, and the timeline for such approvals is subject to regulatory review. The Company cannot guarantee the timing or success of any permit modifications that may be required for future expansions. Announcement • Jan 16
Borealis Mining Company Limited announced that it has received CAD 20.01 million in funding On January 15, 2026, Borealis Mining Company Limited closed the transaction. The company issued 13,340,000 common shares at an issue price of CAD 1.50 for gross proceeds of CAD 20,010,000. The company also issued additional 2,001,000 common shares at an issue price of CAD 1.50 for gross proceeds of CAD 3,001,500 as underwriter's options. The common shares were issued to purchasers resident in certain provinces of Canada, except Quebec and also issued in the United States. Each compensation warrant entitles the holder to acquire a common share at a price of CAD 1.50 per common share for a period of 24 months from the closing of the offering. The compensation warrants and common shares issuable upon exercise of the compensation warrants are subject to a hold period in accordance with applicable Canadian securities law, expiring four months and one day following the issue date, being May 16, 2026. The common shares are not subject to a statutory hold period pursuant to applicable Canadian securities laws. The offering is subject to final approval by the TSX Venture Exchange. Announcement • Jan 06
Borealis Mining Company Limited announced that it expects to receive CAD 20.01 million in funding Borealis Mining Company Limited announced that it has entered into an agreement with Stifel Canada pursuant to which Stifel Canada will act as sole bookrunner, together with a syndicate of underwriters (collectively, the "Underwriters"), in connection with a "bought deal" private placement offering of 13,340,000 common shares of the Company (the "Common Shares") at a price of CAD 1.50 per Common Share (the "Issue Price") for aggregate gross proceeds of CAD 20,010,000 on January 5, 2026. The Company has granted the Underwriters an option (the "Underwriters' Option") to purchase (or arrange for substituted purchasers to purchase) up to an additional 2,001,000 Common Shares at the Issue Price on the same terms and conditions as the Offering. The Underwriters' Option will be exercisable, in whole or in part, at any time up until 48 hours prior to the closing of the Offering. The Offering is expected to close on or about January 15, 2026, and is subject to certain conditions including, but not limited to, the receipt of all necessary approvals, including the acceptance of the TSX Venture Exchange. A cash commission equal to 6.0% on the gross proceeds of the Offering and compensation warrants (the "Compensation Warrants") equal to 6.0% of the number of Common Shares of the Company sold under the Offering shall be paid to the Underwriters, subject to the policies of the TSX Venture Exchange and applicable securities laws. Each Compensation Warrant entitles the holder to acquire a common share of the company at a price equal to the Issue Price for a period of 24 months from the date of issue thereof. Announcement • Jun 12
Borealis Mining Company Limited Announces Initiation of Crushing Ahead of Schedule At the Borealis Mine Borealis Mining Company Limited announced that crushing of its ~327,000 ton mineralized stockpile at the Borealis Gold Project in Nevada began ahead of schedule on June
6. Crushing rates are expected to range from 2,500 tpd to 4,500 tpd, depending on the crushing characteristics of the material. Drip line application on the first panel of crushed material is expected to begin the week of July 7th, with a tentative target of a first gold pour during the week of August 11th. Bulk sample results from 2024 suggest an average grade of 0.016 oz/st Au (0.55 g/mt Au) and an expected recovery of ~70% via conventional heap leaching. The two-stage crushing is targeted to continue through to Fourth Quarter 2025, while gold pours are expected to continue to mid-2026, at the least. While Borealis expects to issue guidance on the restart of blasting and mining separately, the tentative target for this restart is also Fourth Quarter 2025. Announcement • Jun 05
Borealis Mining Company Limited Announces Contractor Mobilization at Borealis Gold Project in Nevada Borealis Mining Company Limited announced the mobilization of contractors at the Borealis Gold Project in Nevada, on schedule to start crushing the ~327,000 ton mineralized stockpile at the site on June 9, 2025. The first gold pour from this material is expected in late July. bulk sample results from 2024 suggest an average grade of 0.016 oz/st Au (0.55 g/mt Au) and an expected recovery of ~70% via conventional heap leaching. The two-stage crushing is targeted to continue through to Fourth Quarter 2025, while gold pours are expected to continue to mid-2026, at the least. While Borealis expects to issue guidance on the restart of blasting and mining separately, the tentative target for this restart is also Fourth Quarter 2025. 
