[3] Construction of the open-pit mine, 220 km east of the city of Hermosillo in the Sierra Madre Occidental mountain range of Sonora state, began in the summer of 2004, and the company poured first gold in July 2005.

[5] In 2012, Alamos CEO John McCluskey was named 2012 Ontario Entrepreneur Of The Year by Ernst & Young and received recognition for growing the company to more than 500 people and showing a commitment to excellence in environmental management, social responsibility and health and safety.

In 2015, the El Chanate mine won the “Best Practices in Social Responsibility” Award by CEMEFI, the Mexican Center for Philanthropy, the Ethics and Values Award by the Confederation of Industrial Commerce, and reported its medical clinic served over 7,000 medical visits and provided health care and medicine to 80% of the population of Mulatos and Matarachi.

[21] In the third quarter of 2018, Alamos successfully commissioned the Phase I expansion at the Island Gold mine, increasing mill capacity to 1,100 tonnes per day.

[5] The following year, the company announced it was granted the GSM (Business Opening and Operation) permit required for the development of its Kirazli project, by the Çanakkale Governorship in Turkey.

[5] Two years later in 2019, the company announced that it had been granted the Operating Permit from the Turkish Department of Energy and Natural Resources allowing for the start of earthworks on the Kirazl project.

[28] Additionally that year, the company announced it was the recipient of the "Best Corporate Social Responsibility Practice 2019" award from the Mexican Center for Philanthropy (Cemefi) and the Alliance for Corporate Social Responsibility in Mexico (AliaRSE) for the company's voluntary relocation program of residents from Mulatos to Matarachi in Mexico.

[30][31] The protestors alleged that Alamos cut down four times the number of trees than it declared in an environmental impact report and that the use of cyanide to extract gold could contaminate the soil and waters of a nearby dam.

[39] In April 2020, a group of five armed robbers intercepted a shipment of gold and silver alloy bars that were being loaded onto a plane for transport at Alamos' Mulatos mine, then fled in a light aircraft.

Alamos announced the completion of  the lower mine expansion at Young-Davidson with the successful commissioning of the Northgate shaft, unlocking a 13 year mineral reserve life, large resource base, significant exploration potential, and positioning the mine to deliver solid free cash flow over the long term.

[46] In December 2020, the company acquired Trillium Mining Corporation for cash consideration of US$19.5 million, increasing its land package adjacent to, and along strike from the Island Gold deposit, by approximately 60%.

[48] Also in 2021, through its Dutch subsidiaries, the company sought $1 billion compensation payment from the government of Turkey for its role in not renewing the mining licenses related to its Kirazli Project.

[49][50] In February 2022, Alamos announced the sale of the Esperanza Gold Project in Morelos State, Mexico for total consideration of up to $60 million.

[54] In 2022, Alamos announced a company-wide target of a 30% reduction in GHG emissions by 2030, and in 2023 the Company released its first Climate Change report.

[58] In 2022, Alamos Gold was the recipient of the inaugural Reconciliation Award from the Manitoba Prospector & Developers Association in recognition of its engagement with Marcel Colomb First Nation.

[60] In August 2023, the Company updated its feasibility study for the Lynn Lake project, reporting mineral reserves as 44% larger than previously thought, totalling 47.6 million tonnes grading 1.52 g/t gold and containing 2.3 million oz, and supporting mining for 17 years, up from 10 years as reported in the previous study.

[62] The Young-Davidson mine is located near the town of Matachewan, approximately 60 kilometres west of Kirkland Lake in northern Ontario.