O3 Mining Inc. is a Canadian gold exploration and development company dedicated to advancing its portfolio of projects in Québec's Val-d'Or region. The company's flagship asset, the Marban Alliance project, encompasses 7,525 hectares in the Malartic gold mining camp, located approximately 12 kilometers from the Canadian Malartic Mine. A 2022 prefeasibility study reported a net present value of C$463 million, with an anticipated annual production of over 160,000 ounces of gold over a 10-year mine life. In December 2024, Agnico Eagle Mines Limited announced a friendly acquisition of O3 Mining for approximately C$204 million, aiming to integrate the Marban deposit into its Canadian Malartic complex. This strategic move underscores the project's potential and O3 Mining's commitment to delivering value to its shareholders.