VANCOUVER, BC / ACCESS Newsline / February 26, 2026 / Marimaca Copper Corp. (TSX:MARI,OTC:MARIF)(ASX:MC2) (“Marimaca“or the”Company“) is pleased to announce the closing of the Australian secondary offering of 15,200,913 of the Company’s existing CHESS Depositary Interests (the “CDIs“) at a price of A$10.35 per CDI, owned and controlled by Greenstone Resources II LP and other shareholders (the “Selling shareholders“) for total gross proceeds of A$157 million (the “Australian secondary offering“).
The previously announced global treasury and secondary offering has now been fully completed for aggregate gross proceeds of C$409 million, or A$423 million[1] (the “Worldwide offering“). See the Company’s prior press release dated February 26, 2026 regarding the completion of the Canadian offering (the “Canadian offer“) for aggregate gross proceeds of C$257 million, consisting of a treasury offering for aggregate gross proceeds of C$136.5 million (the “Canadian Treasury Offer“) and a secondary offering for aggregate gross proceeds of C$120.5 million (the “Canadian secondary offering” and together with the Australian secondary offering, the “Secondary offering“).
The Australian secondary offering was completed as a brokered placement of CDIs by Euroz Hartleys Limited, Canaccord Genuity (Australia) Limited, Beacon Securities Limited and BMO Capital Markets (the “Joint chief managers“), who acted as co-lead agents and joint bookrunners for the Global Offering.
The net proceeds of the Australian Secondary Offering were paid to the Selling Shareholders and the Company did not receive any proceeds therefrom.
Early disclosure of warnings
Upon the closing of the global offering, Greenstone Resources II LP and Greenstone Co-Investment No. 1 (Coro) LP (the “Greenstone Group“) jointly own and control 2,255,198 common shares of the Company (the “Common shares“) and 6,351,806 CDIs, representing 6.44% of the outstanding Common Shares and CDIs (in the aggregate) (taking into account the completion of the Canadian Treasury Offering). Prior to the closing of the Global Offering, the Greenstone Group owned and controlled 22,304,285 Common Shares (of which 8,000,000 were held in the form of CDIs), representing 18.58% of the outstanding Ordinary Shares and CDIs (in aggregate). Pursuant to the Secondary Offering, Greenstone Group sold a total of 13,697,281 Ordinary Shares (of which 1,648,194 in the form of CDIs), representing a decrease of 11.41% of the outstanding Ordinary Shares and CDIs. in the aggregate, before taking into account the Canadian Treasury Offering (or a decrease of 12.14% taking into account the completion of the Canadian Treasury Offering). The Greenstone Group received C$10.00 per Share sold under the Canadian Secondary Offering and A$10.35 per CDI sold under the Australian Secondary Offering, for total proceeds to the Greenstone Group of C$136,972,810. (using an exchange rate of C$1.00 = A$0.9961), excluding commissions and fees payable to the Joint Lead Managers in connection with the Secondary Offering.
As part of the Global Offer, the Selling Shareholders have agreed, subject to certain limited exceptions, not to sell any Common Shares or CDIs for a period of 90 days. Subject to the foregoing, depending on market conditions and other factors, Greenstone Group may from time to time acquire and/or sell securities of Marimaca or continue to maintain its current position. An early warning report regarding the secondary offering will be filed with the applicable securities commissions and on SEDAR+ under Marimaca’s profile at www.sedarplus.ca and a copy of any such report may be obtained by contacting Gary Mauger at greenstoneGSY@aztecgroup.co.uk or on +44 1481 749 700. The address of Greenstone Resources II LP is PO Box 656, East Wing, Trafalgar Court, Les Banques, St Peter Port, Guernsey, GY1 3PP.
US Securities Act Disclaimer
The securities under the Canadian Offering and the Australian Secondary Offering have not been registered under the US Securities Act or the securities laws of any state of the United States and have not been offered, sold or delivered, directly or indirectly, in the United States (as that term is defined in Regulation S under the US Securities Act) except pursuant to an exemption from the registration requirements of the US Securities Act and applicable state securities laws. This press release shall not constitute an offer to sell or the solicitation of an offer to buy these securities in the United States or in any jurisdiction in which such offer, solicitation or sale is not authorized.
About Marimaca
Marimaca is a copper exploration and development company focused on the flagship Marimaca Copper Project and surrounding exploration properties in the Antofagasta region, Chile. Marimaca’s registered office is 5300-66 Wellington Street West, Toronto, Ontario, M5K 1E6.
The Marimaca Copper Project hosts the Marimaca Oxide Deposit (the “MOD“), an IOCG type copper deposit. The Company is currently working on the Marimaca copper project through detailed engineering and submission of sector permits following the release of the MOD DFS 2025 and receipt of the RCA. At the same time, the Company is exploring its extensive land package in the Antofagasta region, including the 15,000+ hectare Sierra de Medina property block, located 25 km from the MOD. The Company is currently completing a Phase II drilling program (30,000 m) at Pampa Medina, located in the Sierra de Medina estate, identified a high-grade sedimentary horizon at depth after a successful discovery drilling program in 2025.
This press release has been approved for publication by the Marimaca Board of Directors.
Contact details
For more information, please visit www.marimaca.com or contact:
Tavistock
+44 (0) 207 920 3150
Emily Moss
marimaca@tavistock.co.uk
Forward-Looking Statements
This press release contains certain “forward-looking statements” under applicable Canadian securities laws. There can be no assurance that such statements will prove to be accurate and actual results and future events could differ materially from those anticipated in such statements. Forward-looking statements reflect the beliefs, opinions and projections as of the date the statements are made and are based on a number of assumptions and estimates that, while considered reasonable by Marimaca, are inherently subject to significant business, economic, competitive, political and social uncertainties and contingencies. Many factors, both known and unknown, could cause actual results, performance or achievements to be materially different from those expressed or implied by such forward-looking statements, and the parties have made assumptions and estimates based on or related to many of these factors. Such factors include, without limitation: risks associated with stock prices and market conditions, the inherent risks involved in mining, exploration and development of mineral properties, the uncertainties involved in interpreting drilling results and other geological data, fluctuating metal prices, the possibility of project delays or cost overruns or unforeseen excessive operating costs and expenses, uncertainties regarding the need for financing, uncertainties regarding the regulatory process and timing for permit reviews, the availability and costs of financing needed in the future. Many of these risks and uncertainties and additional risk factors generally applicable to the Company are described in the Company’s annual Company Information Form dated March 27, 2025 and other filings made by the Company with the Canadian securities regulatory authorities (which can be accessed at www.sedarplus.ca). Accordingly, readers should not place undue reliance on forward-looking statements. The Company undertakes no obligation to publicly update or otherwise revise any forward-looking statements contained herein, whether as a result of new information or future events or otherwise, except as required by law.
None of the TSX, ASX or the Canadian Investment Regulatory Organization accepts responsibility for the adequacy or accuracy of this press release.
[1] Based on an AUD.CAD exchange rate of 0.9661
SOURCE: Marimaca Copper Corp.
View the original press release on ACCESS Newswire
#Marimaca #Copper #announces #closing #Australian #offering #complete #C409 #million #global #offering