Canary, LLC headquartered in Denver, CO since 2013, is the fifth largest wellhead company in the nation. Canary started with its oilfield operations previously headquartered in Watford City, ND, since 1986, under Frontier Wellhead & Supply. In 2008, Frontier Energy Group, LLC acquired Frontier Wellhead & Supply and later merged with Oklahoma-based Canary Wellhead, LLC. Canary currently leads from Denver, CO (Corporate), Watford City, ND (Oilfield Operations), and Oklahoma City, OK (Manufacturing). Canary provides comprehensive oilfield drilling and production services to oil and gas companies throughout the United States. Canary was recently awarded a spot on the 2014 Inc. 5000—a list of the fastest-growing private companies in the United States. Canary, whose revenue grew 285% from 2010 to 2013, was ranked in the top 50 energy companies.