to leave the company after revelations that he took a personal stake in Chesapeake wells and then used those investments as collateral for up to $1.1 billion in loans from banks that also financed the company. In May 2013, Robert Douglas Lawler, an executive of Anadarko Petroleum, was named CEO of the company. In 2013, Chesapeake sold 55,000 net acres in the Northern Eagle Ford Shale and 9,600 net acres in the Haynesville Shale to EXCO for aggregate proceeds of $1 billion. In December 2014, Chesapeake sold a large portion of its oil and gas assets in the Marcellus Formation and Utica Shale to Southwestern Energy for net proceeds of $4.975 billion. The transaction included approximately 413,000 net acres and 1,500 wells in northern West Virginia and southern Pennsylvania. Net production of the sold assets was 57,000 barrels of oil equivalent per day in December 2014. In 2014, the company also sold additional midstream assets for $520 million. In September 2015, the company announced layoffs of hundreds of people in Oklahoma City. On March 2, 2016, former CEO and co-founder Aubrey McClendon died in a single-occupant single-vehicle crash when he drove his vehicle directly into a concrete bridge embankment in Oklahoma City. It occurred the day after a United States Department of Justice federal grand jury indicted McClendon for violating antitrust laws during his leadership at Chesapeake. In 2017, the company sold assets in the Haynesville shale for $465 million. In January 2018, the company laid off 400 employees. In the first quarter of 2018, the company sold assets in Oklahoma for $500 million. In February 2019, the company acquired Texas oil producer WildHorse Resource Development for $4 billion in cash and stock. In June 2020, the company filed for bankruptcy protection with $7 billion in debt. It emerged from bankruptcy protection in February 2021. In April 2021, Doug Lawler resigned as CEO of the company and Mike Wichterich, Chair of the Board of Directors, was named interim-CEO. In November 2021, the company acquired Vine Energy, which operated in the Haynesville Shale. In March 2022, the company acquired Chief Oil & Gas. In February 2023, it was announced the company had sold a portion of its oil and gas assets in the Eagle Ford shale, south Texas for US$1.4 billion, to the UK-headquartered multinational company, Ineos. Antitrust allegations Alleged collusion with Encana In mid-2012, the U.S. Department of Justice (DOJ)