Core Viewpoint - Marimaca Copper Corp. has successfully closed an Australian secondary offering, raising significant capital through the sale of existing CHESS Depositary Interests [1] Group 1: Offering Details - The company closed the offering of 15,200,913 existing CHESS Depositary Interests (CDIs) [1] - The price per CDI was set at A$10.35, leading to aggregate gross proceeds of A$157 million from the offering [1] Group 2: Shareholders Involved - The offering involved shares owned and controlled by Greenstone Resources II L.P. and other shareholders, referred to as the Selling Shareholders [1]

Not for release to United States news wire services or for dissemination in the United States VANCOUVER, BC / ACCESS Newswire / February 26, 2026 / Marimaca Copper Corp. (TSX:MARI)(ASX:MC2) ("Marimaca" or the "Company") is pleased to announce the closing of its previously announced Canadian treasury and secondary offering, with closing of its Australian secondary offering expected in the coming days. Global Offering Details The global offering is comprised of two parts (together the "Global Offering"): Cana ...

Treasury Offering of C$136.5 Million (~ A$141 Million)Secondary Offering of C$272.5 Million (~ A$282 Million)Marimaca and the Selling Shareholders have received strong commitments via the Canadian Offering and Australian Offering (defined below)Pro forma cash before transactions costs is C$227 million (~ A$235 million[1])[2]Vancouver, British Columbia--(Newsfile Corp. - February 18, 2026) - Marimaca Copper Corp. (TSX: MARI) (ASX: MC2) ("Marimaca" or the "Company") is pleased to announce a highly successful ...

Core Viewpoint - Marimaca Copper Corp. is conducting a treasury offering of approximately C$136 million (~ A$141 million) and a secondary offering of approximately C$273 million (~ A$283 million) to fund its Marimaca Project and provide liquidity to selling shareholders [1][2][4]. Offering Details - The Canadian Offering will be priced at C$10.00 per Common Share and is expected to close around February 26, 2026, pending regulatory approvals [2]. - The Australian Offering will involve a brokered placement of CHESS Depositary Interests (CDIs) at A$10.35 per CDI, also expected to close around February 26, 2026 [3]. Use of Proceeds - Net proceeds from the treasury offering will be allocated to advance the Marimaca Project, including pre-construction engineering, early site works, and a drilling campaign at Pampa Medina, along with working capital and general corporate purposes [4]. Shareholder Agreements - Selling shareholders have agreed not to sell any Common Shares or CDIs for a 90-day period following the Global Offering, subject to certain exceptions [5]. Regulatory Compliance - The Canadian Offering will be made via a prospectus supplement to the Company's base shelf prospectus and may be offered in the U.S. to qualified institutional buyers under the U.S. Securities Act [6][8]. - The CDIs will be offered in Australia to professional investors and in other jurisdictions to institutional or sophisticated investors [7]. Company Overview - Marimaca Copper Corp. is focused on its 100%-owned Marimaca Copper Project located in the Antofagasta Region of Chile, which hosts the Marimaca Oxide Deposit [10][11]. - The Company is progressing through detailed engineering and permitting processes while exploring its extensive land package in the region [11].

Core Viewpoint - Greenstone Resources L.P. has transferred 4,099,888 common shares of Marimaca Copper Corp. to its limited partners, representing a strategic distribution of shares [1]. Group 1: Share Distribution - The Greenstone Group, which includes Greenstone and its co-investment entities, previously owned 26,404,173 shares of Marimaca, accounting for approximately 22.08% of the total issued shares [2]. - The shares distributed by Greenstone represented 3.4% of the total issued and outstanding shares of Marimaca [2]. Group 2: Post-Distribution Ownership - After the distribution, the Greenstone Group now owns 22,304,285 shares, which is approximately 18.65% of the total issued shares of Marimaca [3]. Group 3: Future Actions - The Greenstone Group may acquire or dispose of securities of Marimaca depending on market conditions and other factors, indicating potential future changes in their investment strategy [4].

Core Viewpoint - Greenstone Resources L.P. and its affiliates have increased their stake in Marimaca Copper Corp. to 22.28% following the acquisition of 838,360 shares through the exercise of options and conversion of restricted share units [1][2]. Group 1: Acquisition Details - On January 7, 2026, the Greenstone Group acquired a total of 838,360 shares of Marimaca, which includes 560,000 options exercised and 532,896 restricted share units converted into shares [1]. - The January Share Issuances represent 0.71% of Marimaca's total issued and outstanding shares [1]. - After the acquisition, the Greenstone Group holds 26,505,174 shares of Marimaca [1]. Group 2: Previous Holdings - Prior to the recent acquisition, the Greenstone Group owned 25,565,823 shares, 170,000 RSUs, and 1,105,000 options [2]. - If the Greenstone Group had exercised all RSUs and options, it would have held approximately 26.24% of Marimaca's total shares [2]. Group 3: Changes in Holdings - The Greenstone Group's holding percentage has decreased by almost 4% due to dilution from share issuances by Marimaca [3]. - During the period since the last early warning report, the Greenstone Group was granted 362,896 RSUs, while 545,000 options expired [3]. - The group converted 532,896 RSUs into shares and exercised 560,000 options into 305,455 shares [3]. Group 4: Future Intentions - The Greenstone Group may acquire or dispose of securities of Marimaca depending on market conditions and other factors [4].

Core Insights - OR Royalties Inc. has reported positive developments across its portfolio, highlighting the upcoming production from Dalgaranga and advancements in other projects like Cascabel, Marimaca MOD, and Spring Valley [2][4] - The company believes that the current share price does not reflect the underlying value of its assets, prompting active share repurchases [4] - Significant exploration results from TDG Gold's AuWEST Project and Benz Mining's Glenburgh Gold Project indicate strong potential in advanced exploration assets [3] Dalgaranga (Operated by Ramelius Resources Ltd.) - Ramelius announced a Pre-Feasibility Study (PFS) for the Never Never deposit, which includes a processing plant upgrade to 5 million tonnes per annum, enhancing production and reducing costs [5] - The Maiden Probable Ore Reserve at Never Never is 7.0 million tonnes at 7.3 g/t Au, equating to 1.6 million ounces of gold [9] - OR Royalties holds a 1.44% gross revenue royalty on Dalgaranga [7] Cascabel (Operated by SolGold plc) - Jiangxi Copper Company Limited made a revised cash offer for SolGold at 28 pence per share, valuing the company at approximately £842 million ($1.1 billion) [8][10] - OR Royalties owns a 0.6% net smelter return (NSR) royalty on the Cascabel property and a 6% gold stream until 225,000 ounces of gold are delivered [11][12] Marimaca MOD (Operated by Marimaca Copper Corp.) - Marimaca received formal environmental approval (RCA) for its Marimaca Oxide Project, moving closer to construction readiness [15][16] - OR Royalties holds a 1% NSR royalty on Marimaca's MOD covering all known resources [17] Spring Valley (Operated by Solidus Resources, LLC) - Solidus announced a definitive Precious Metals Purchase Agreement with Wheaton Precious Metals, fully funding the Spring Valley project [18][19] - The feasibility study projects over 300,000 ounces of gold production per year for a mine life exceeding 10 years [20] - OR Royalties owns a 2.5% to 3.0% NSR royalty on the core of the Spring Valley deposit [21] Windfall (Operated by Gold Fields Ltd.) - Gold Fields updated the project timeline, with plant commissioning expected in the second half of 2028 and first gold production anticipated in the first half of 2029 [22][23] - OR Royalties holds a 2.0-3.0% NSR royalty on the Windfall project [25] Altar (Operated by Aldebaran Resources Inc.) - Aldebaran released a Preliminary Economic Assessment (PEA) for the Altar project, indicating a mine life of 48 years with significant copper and gold production [26][27] - OR Royalties owns a 1.0% NSR royalty on the majority of the Altar project [29] Shaakichiuwaanaan (Operated by PMET Resources Inc.) - PMET announced a lithium-only feasibility study for the Shaakichiuwaanaan property, confirming its potential as a top spodumene concentrate producer [30][32] - OR Royalties holds a sliding scale NSR royalty of 1.5-3.5% on precious metals and 2.0% on lithium at Shaakichiuwaanaan [35] AuWEST (Operated by TDG Gold Corp.) - TDG reported positive assay results from its exploratory drilling program at the Aurora West target, indicating strong mineralization [36][37] - OR Royalties owns a 1.0% NSR royalty on AuWEST and the broader GSN project [38] Glenburgh (Operated by Benz Mining Corp.) - Benz reported significant discoveries at the Glenburgh Gold Project, with high-grade mineralization confirmed in multiple lenses [39][40] - OR Royalties owns a 1.08% gross revenue royalty on Glenburgh [41]

Core Insights - Marimaca Copper Corp. has announced successful results from its 10,000m discovery drilling campaign at the Pampa Medina deposit, indicating significant extensions to high-grade copper mineralization and the commencement of a 30,000m follow-up drilling program [1][4]. Drilling Results - The discovery drilling program at Pampa Medina has defined a potentially significant new deposit, with notable intersections such as 48m of 2.05% Cu and 16m of 2.29% Cu from different drill holes [5][6]. - The southern drilling confirmed the primary mineralized sedimentary horizon extends 900m south of previous drilling, enhancing the continuity of mineralization [5][6]. - The drilling results have established a favorable mineralized stratigraphic sequence across a 1.6km x 1.4km area, with extensional drilling planned towards the north and west [5][6]. Geological Overview - Pampa Medina is characterized as a stratiform manto-style copper deposit hosted in Jurassic-Triassic sedimentary units, with copper mineralization identified in both near-surface oxides and deeper sulphide zones [6][7]. - The geological model has been updated to target lower sedimentary units, which are expected to be productive for future drilling campaigns [7]. Future Plans - The company has initiated a 30,000m Phase II drilling program with five rigs on site, aimed at further understanding the deposit's geological controls and extent [1][4]. - The exploration strategy includes geophysical surveys and additional drilling to explore potential extensions from the Pampa Medina deposit [68].

Core Insights - Marimaca Copper Corp. has received the formal Resolución de Calificación Ambiental (RCA) for its Marimaca Oxide Project, marking a significant step towards construction readiness [1][3] - The RCA approval follows extensive environmental studies and stakeholder engagement, demonstrating the company's commitment to high environmental and social standards [2][4] - The company is now positioned to advance to the next phase of permitting activities, known as Sectorial Permits, with a target to be construction-ready in the second half of 2026 [3][6] Environmental and Social Commitment - The company emphasizes its dedication to developing assets in Chile while adhering to high environmental and social standards, which is reflected in the rigorous permitting strategy [4][5] - Significant time and resources have been invested in designing a project that includes a strong mitigation strategy for identified environmental and social risks [4] Future Plans and Growth Strategy - Marimaca Copper is preparing for the critical path towards Final Investment Decision and Project Sanctioning, aiming for readiness in the second half of 2026 [6] - Exploration efforts at Pampa Medina are ongoing, with expectations of releasing an exploration update soon, indicating confidence in long-term growth beyond the current production estimates [7]

Core Points - Marimaca Copper Corp. announces the sudden passing of Mr. Colin Kinley, a Director of the Company, expressing condolences to his family and friends [1] - Colin Kinley joined Marimaca in 2016, served as Chairman from 2017 to 2018, and was the Chair of the Audit Committee, contributing significantly to the Company and the natural resources sector [2] - The President & CEO of Marimaca, Mr. Hayden Locke, expressed shock at the news and highlighted Kinley's steady influence during challenging times for the Company [3] - Colin Kinley's Board seat will remain vacant until a new Director is proposed and confirmed at the next annual meeting of shareholders [3] Company Information - Marimaca Copper Corp. is listed on TSX under the ticker MARI and on ASX under MC2 [1] - The Company has a history of leadership stability, with Kinley being a long-standing member of the Board since before the current CEO's involvement [3]