Greenstone Files Early Warning Report for Marimaca Copper Corp.

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].