Weyerhaeuser Company, one of the world's largest private owners of timberlands, began operations in 1900. The company owns or controls approximately 11 million acres of timberlands in the U.S. and manages additional timberlands under long-term licenses in Canada. Weyerhaeuser Company manages these timberlands on a sustainable basis in compliance with internationally recognized forestry standards. The company is also one of the largest manufacturers of wood products in North America. The company is a real estate investment trust. In 2019, Weyerhaeuser Company generated $6.6 billion in net sales and employed approximately 9,400 people who serve customers worldwide. The company is listed on the Dow Jones Sustainability North America Index.