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Midstates Petroleum Company, Inc. (MPO) (the “Company”) announced today that it has extended the primary expiration date for its previously announced exchange offer relating to its outstanding 10% Senior Secured Second Lien Notes due 2020.

The exchange offer, previously scheduled to expire at 5:00 p.m., New York City time, on November 16, 2015, has been extended until 5:00 p.m., New York City time, on November 18, 2015, unless further extended by the Company. Holders of notes previously tendered for exchange shall have the right to withdraw tenders of the notes at any time prior to the expiration of the exchange offer.

As of 5:00 p.m., New York City time, on November 16, 2015, holders of $624,809,000, or 99%, of the outstanding second lien notes had tendered their notes for exchange.

This press release is neither an offer to sell any securities nor a solicitation of an offer to buy any securities. The Company is making the exchange offer only by, and pursuant to the terms of, the prospectus and related letter of transmittal and only to such persons and in such jurisdictions as is permitted under applicable law.

About Midstates Petroleum Company, Inc.

Midstates Petroleum Company, Inc. is an independent exploration and production company focused on the application of modern drilling and completion techniques in oil and liquids-rich basins in the onshore U.S. The Company’s operations are currently focused on oilfields in the Mississippian Lime play in Oklahoma and the Anadarko Basin in Texas and Oklahoma.