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The company was founded in 2002 by Paul M. Rady and Glen C. Warren, Jr. after they sold their previous venture, Pennaco Energy, to Marathon Oil.
Beginning in February 2003, Warburg Pincus invested over $1.5 billion into the company and at one time held a controlling stake.
In 2005, the company sold its assets in the Barnett Shale to XTO Energy.
In October 2013, the company became a public company via an initial public offering, raising $1.5 billion.
In November 2014, the company spun off 30% of its midstream operations, Antero Midstream Partners LP, via an initial public offering.
In September 2015, the company sold its integrated water business to its midstream affiliate for $1.05 billion.
In August 2016, the company acquired assets in the Marcellus Shale from Statoil for $96 million.
In January 2017, the company acquired assets in the Utica Shale from Rex Energy for $30 million.