Midstates Petroleum Company, Inc. is an independent exploration and production company focused on the application of modern drilling, completion and production operations techniques in oil and liquids-rich basins in the onshore United States. Our operations are currently focused on exploration and production activities in the Mississippian Lime. Our corporate headquarters is located in Tulsa, Oklahoma. Midstates Petroleum Company, Inc. was incorporated pursuant to the laws of the State of Delaware on October 25, 2011, to become a holding company for Midstates Petroleum Company LLC ("Midstates Sub" or "Debtor Affiliate"). In this Annual Report, references to "Company," "we," "us," "our," and "Midstates" when used in the present tense, prospectively or for historical periods, refer to Midstates Petroleum Company, Inc. and Midstates Sub.
On April 30, 2016, we filed voluntary petitions for reorganization under Chapter 11 of the United States Bankruptcy Code. On October 21, 2016, in connection with our emergence from Chapter 11, our existing common shares were cancelled and on October 24, 2016, our new common shares issued in connection with our successful reorganization and emergence from Chapter 11 were listed and began trading on the NYSE MKT under the symbol "MPO". Our common stock began trading on the NYSE under the symbol "MPO" beginning on May 4, 2017. We currently lease office space in Tulsa, Oklahoma at 321 South Boston Avenue, Suite 1000, where our principal offices are located. The lease for our Tulsa office expires in 2026. We also lease one field office in Dacoma, Oklahoma. As of December 31, 2018, we had 85 employees.
On May 31, 2018, we closed on the sale of our Anadarko Basin assets for $58.0 million in cash ($54.1 million, net of closing adjustments).