Exhibit 99.1

4400 POST OAK PARKWAY SUITE 1900 HOUSTON, TEXAS 77027

PRESS RELEASE                          FOR IMMEDIATE RELEASE

MIDSTATES PETROLEUM ANNOUNCES RECORD THIRD QUARTER 2013 RESULTS

ADJUSTED EBITDA EXCEEDS $100 MILLION ON STRONG PRODUCTION GROWTH

HOUSTON — November 12, 2013 — Midstates Petroleum Company, Inc. (NYSE: MPO) today announced its third quarter 2013 financial and operating results.

Third quarter highlights:

·                  Average daily production rose 45% to 28,464 net barrels of oil equivalent (“Boe”) per day from 19,634 Boe per day in the second quarter of 2013.  Third quarter 2013 included a 751 Boe per day imbalance settlement related to prior period Mississippian Lime production.

·                  Cash operating expenses fell significantly to $16.98 per Boe compared to $21.07 per Boe in the second quarter of 2013.

·                  Drilling activity reached record levels with 39 wells spud during the quarter and 40 wells brought online.  Midstates had 10 rigs active at the end of the quarter.

·                  Adjusted EBITDA totaled $101.6 million, a record high, up 90% compared to $53.4 million for the second quarter 2013.

·                  Adjusted Net Income totaled a loss of $0.8 million, or $0.01 loss per share, compared with a net loss of $4.2 million, or $0.06 loss per share, in the second quarter of 2013.

John Crum, Chairman, President and CEO, commented, “Our strong growth in production together with an ongoing focus on controlling operating costs yielded record results for the third quarter.   Exceeding $100 million in adjusted EBITDA for the first time was a significant milestone for us and is indicative of the growth we can achieve with our expanded asset base.  We have more than doubled our production in the Mississippian Lime properties since their acquisition in October 2012 and are experiencing encouraging results in our new Anadarko Basin assets.  We believe our ramped-up drilling program will drive further growth for the balance of 2013 and into next year.”

Financial Discussion

(Adjusted EBITDA, Adjusted Net Income and Cash Operating Expenses are non-GAAP financial measures.  Each measure is defined and reconciled to the most directly comparable GAAP measure under “Non-GAAP Financial Measures” in the tables below.)

Adjusted EBITDA totaled $101.6 million in the third quarter of 2013, up significantly from $32.7 million in the third quarter of 2012 and $53.4 million (which was reduced by $11.5 million of acquisition and transaction costs) in the second quarter of 2013.

The GAAP net loss of $23.6 million (before preferred dividends) for the third quarter of 2013 compares to a net loss of $17.8 million for the third quarter of 2012 and net income of $3.3 million in the second quarter of 2013.  Adjusted

Net Income, which excludes acquisition and transaction costs and unrealized gains and losses on derivatives and the related tax impact, totaled a loss of $0.8 million for the third quarter of 2013, or $0.01 per share.

Production and Prices

Production during the third quarter of 2013 increased to 28,464 Boe per day compared to 8,182 Boe per day during the prior year third quarter, and 19,634 Boe per day in the second quarter of 2013.  Third quarter 2013 production from the Company’s Mid-Continent properties (including the Anadarko Basin properties) averaged 22,768 Boe per day while Gulf Coast properties contributed the balance of 5,696 Boe per day. Average daily production for the third quarter of 2013 includes a 751 Boe per day imbalance settlement related to prior period Mississippian Lime natural gas production.  The Mississippian Lime properties, including the imbalance of 751 Boe per day, contributed roughly 50%, or 14,364 Boe per day, comprised of 35% oil and 21% natural gas liquids (“NGLs”).  The Anadarko Basin properties contributed roughly 30%, or 8,404 Boe per day, comprised of 44% oil and 23% NGLs.  For the total Company, oil volumes comprised 44% of total production, NGLs 21%, and natural gas 35%.

In the third quarter of 2013, Midstates’ average realized price per barrel of oil, before realized commodity derivatives, was $104.51 ($93.56 with realized derivatives) while its average realized price for NGL sales, before realized derivatives, was $35.13 per barrel ($35.77 with realized derivatives). Natural gas averaged $3.33 per thousand cubic feet, before realized derivatives ($3.72 with realized derivatives).  Detailed comparisons of commodity prices by period and region are included in the tables below.

Oil, NGL and natural gas sales revenues, before the impact of derivatives, increased by $97.3 million or 164% to $156.8 million during the third quarter of 2013 as compared to $59.5 million for the third quarter of 2012, and by $53.7 million, or 52%, compared to $103.1 million in the second quarter of 2013. The realized loss on derivatives for the third quarter of 2013 was $9.9 million compared to realized losses of $4.2 million for the third quarter of 2012 and $1.1 million for the second quarter of 2013.

Costs and Expenses

Total Cash Operating Expenses decreased 19% quarter-over-quarter to $16.98 per Boe (excluding the impact of acquisition and transaction costs).  This reduction was driven by cost efficiencies and production growth as discussed above.  Total Cash Operating Expenses represent Midstates’ true cash cost of operations which excludes asset retirement accretion, share based compensation, depreciation, depletion and amortization expense, and any other non-cash charges.

Including those non-cash costs, total unit costs decreased quarter-over-quarter by $5.38 per Boe or 10% led by decreases in general and administrative expense (-38%), severance and other taxes (-16%), lease operating and workover expense (-15%) and depreciation, depletion and amortization expense (-3%).  The only increase was in gathering and transportation, a new expense in this quarter of $2.6 million attributable to the commencement of an amended gas transportation, gathering and processing contract in the Mississippian Lime region.

Lease operating and workover expenses decreased $1.51 per Boe to $8.32 per Boe from the second quarter of 2013. The decrease was the result of cost savings from investments beginning early in the year to reduce salt water disposal costs in the Gulf Coast region and in the Mississippian Lime area, the migration from more costly diesel fired electricity generators to natural gas generators in areas where the local electrical grid is unstable or becomes taxed, and the 45% increase in production.

General and administrative expenses decreased $3.24 per Boe to $5.31 or $1.4 million from the second quarter of 2013. Third quarter 2013 and second quarter 2013 general and administrative expenses included non-cash share-based compensation expense of $1.9 million ($0.73 per Boe) and $1.8 million ($0.99 per Boe), respectively.

Interest expense of $26 million (after amounts capitalized) for the third quarter of 2013 compares to $16.6 million in the second quarter of 2013. The increase relates to three months of interest expense attributable to the $700 million of 9.25% senior notes issued on May 31, 2013 as part of the Anadarko Basin property acquisition.  The Company capitalized $9.7 million in interest to unproved properties during the third quarter of 2013 as compared to $7.9 million in the second quarter of 2013.

Liquidity and Capital Investment

On September 26, 2013, the Company’s revolving credit facility was amended to increase the borrowing base from $425 million to $500 million as part of the regular semi-annual borrowing base redetermination.  On September 30, 2013, liquidity was $219 million, consisting of $194 million of available borrowing capacity under the revolving credit facility and $25 million of cash and cash equivalents.

During the three and nine months ended September 30, 2013, the Company incurred capital expenditures of $172.5 million and $454.7 million, respectively, consisting of (in thousands):

Excluding capitalized interest, drilling and completion costs incurred in the various areas totaled (in thousands):

Mississippian Lime Update

During the third quarter, the Company had five rigs drilling in its Mississippian Lime horizontal well program in Woods and Alfalfa Counties, Oklahoma.  Midstates completed a total of 29 horizontal wells, and spud a total of 22 gross wells, of which 11 were producing, seven were awaiting completion and four were drilling at September 30, 2013.

Production from the Company’s Mississippian Lime properties grew 39% from the second quarter of 2013, as the Company began to realize the benefits of reduced downtime from its investments to improve the reliability of the electric and salt water disposal infrastructure.  The Company continued building on improvements such as pad drilling, rotary steerables and optimizing drilling and completion techniques.  Midstates expects to see spikes in production as a large number of wells are drilled off pads and are brought online in groups, but will also see periods with fewer completions, resulting in some quarter to quarter variability in production growth.

Midstates plans to run five rigs in the Mississippian Lime during the fourth quarter and invest approximately $85 million completing wells drilled during the third quarter and drilling 20 to 25 new wells.

Midstates said it remains pleased with its Mississippian Lime production growth and sees continuing improvement in cash flow over the coming quarters.  The Company now has 115 wells that have been on production for more than 30 days and have an average 30-day initial production rate of 570 Boe per day.

Anadarko Basin Update

In the Anadarko Basin area, there were three operated rigs at the beginning of the third quarter, with a fourth rig added in July and a fifth rig added in August.  The Company completed a total of 10 horizontal wells during the third quarter, nine of which targeted the Cleveland and one targeting the Marmaton formation.  A total of 16 gross wells were spud during the period, of which six were producing, five were awaiting completion and five were drilling at September 30, 2013.

Midstates is pleased with the initial Anadarko Basin horizontal program performance and is drilling several different horizons within the area.  Since assuming control on May 31, 2013, the Company has drilled 14 Cleveland wells, three Marmaton wells, one Tonkawa well and one Cottage Grove well.  Midstates now has 11 Cleveland wells that have been on production for more than 30 days and have an average 30-day initial production rate of 387 Boe per day.

The Company intends to operate five rigs during the fourth quarter in the Anadarko Basin and invest approximately $45 million completing wells and drilling 18 to 20 new wells.

At September 30, 2013, Midstates had 236,861 net acres under lease in the Mid-Continent region, comprised of approximately 88,359 net leased acres in the Mississippian Lime (82,694 in Woods and Alfalfa Counties in Oklahoma and 5,665 acres in Kansas), 13,243 in the Hunton in Lincoln County, Oklahoma, and 135,259 acres in the Anadarko Basin (89,161 acres in Texas and 46,098 acres in Oklahoma).

Gulf Coast Update

Midstates completed the Musser Davis 27 HC-1 well in South Bearhead Creek on September 10, 2013.  The 30-day initial production rate of this well was 779 Boe per day (79% oil/7% NGLs).  The well is currently producing at restricted rates of 483 Boe per day with a flowing tubing pressure of 1,300 psi.  The Wood 10H-1 sidetrack at North Coward’s Gully was drilled in the third quarter and came online in early October.  The well is currently producing at restricted rates of about 375 Boe per day with a flowing tubing pressure of 2,300 psi.  Midstates said that these wells are being flowed back at restrictive rates below maximum capacity to reduce the potential for well integrity issues as seen in the past.

As previously discussed, the Company is taking a measured approach to the development of its horizontal programs in North Coward’s Gully and South Bearhead Creek. In Pine Prairie and Fleetwood, the Company is continuing to study the results of the recently acquired 3-D data to high grade locations and build inventory for the future.

At September 30, 2013, the Company had approximately 111,050 net acres under lease or option in the Gulf Coast region, comprised of 60,000 net leased acres and 51,050 net optioned acres.

John Crum, Chairman, President and CEO commented, “We drilled and completed a record number of wells during the third quarter and currently have 10 rigs active.  As our activity level has increased, our operations team has made great progress in achieving operating efficiencies in our drilling program across our properties. As evidenced by recent results, we continue to be focused on production growth, cost control and extracting value from our diversified asset base.”

Conference Call Information

The Company will host a conference call to discuss third quarter results on Wednesday, November 13th at 10:00 am Eastern time. Participants may join the conference call by dialing (877) 645-4610 (for U.S. and Canada) or (707) 595-2723 (International). The conference access code is 59342085 for all participants. To listen via live web cast, please visit the Investor Relations section of the Company’s website, www.midstatespetroleum.com.

An audio replay of the conference call will be available approximately two hours after the conclusion of the call. The audio replay will remain available for seven days until November 20 and can be accessed by dialing (855) 859-2056 (for U.S. and Canada) or (404) 537-3406 (International). The conference call replay access code is 59342085 for all participants. The replay will also be available in the Investor Relations section of the Company’s website approximately two hours after the conclusion of the call and remain available for approximately 90 calendar days.

Forward-Looking Statements

This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. All statements that are not statements of historical fact, including statements regarding the Company’s strategy, future operations, financial position, estimated revenues and losses, projected costs, prospects, plans and objectives of management, and the closing, financing and benefits of the acquisition are forward-looking statements. Without limiting the generality of the foregoing, these statements are based on certain assumptions made by the Company based on management’s experience, expectations and perception of historical trends, current conditions, anticipated future developments and other factors believed to be appropriate. Although the Company believes that its plans, intentions and expectations reflected in or suggested by the forward-looking statements made in this press release are reasonable, the Company gives no assurance that these plans, intentions or expectations will be achieved when anticipated or at all. Moreover, such statements are subject to a number of factors, many of which are beyond the control of the Company, which may cause actual results to differ materially from those implied or expressed by the forward-looking statements. These factors include, but are not limited to costs and difficulties related to the integration of the acquired businesses and operations with Midstates’ business and operations; unexpected costs, charges or expenses resulting from the acquisition; litigation relating to acquisitions; variations in the market demand for, and prices of, oil and natural gas; uncertainties about the Company’s estimated quantities of oil and natural gas reserves; the adequacy of the Company’s capital resources and liquidity including, but not limited to, access to additional borrowing capacity under its revolving credit facility; general economic and business conditions; weather-related downtime; failure to realize expected value creation from property acquisitions; uncertainties about the Company’s ability to replace reserves and economically develop its current reserves; risks related to the concentration of the Company’s operations; drilling results; and potential financial losses or earnings reductions from the Company’s commodity derivative positions.

Any forward-looking statement speaks only as of the date on which such statement is made and the Company undertakes no obligation to correct or update any forward-looking statement, whether as a result of new information, future events or otherwise, except as required by applicable law.

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Contact:

Midstates Petroleum Company, Inc.

Al Petrie, Investor Relations, (713) 595-9427

Al.Petrie@midstatespetroleum.com

or

Danielle Burkhart, (713) 595-9409

Danielle.Burkhart@midstatespetroleum.com

Midstates Petroleum Company, Inc.

Consolidated Balance Sheets

(In thousands, except share amounts)

(Unaudited)

Midstates Petroleum Company, Inc.

Consolidated Statements of Operations

(In thousands, except per share amounts)

(Unaudited)

(1)         Includes $9.9 million and $4.2 million of realized losses on commodity derivatives for the three months ended September 30, 2013 and 2012, respectively. Includes $16.0 million and $15.8 million of realized losses on commodity derivatives for the nine months ended September 30, 2013 and 2012, respectively.

Midstates Petroleum Company, Inc.

Statement of Stockholders’ Equity

(In thousands, except share amounts)

(Unaudited)

Midstates Petroleum Company, Inc.

Consolidated Statement of Cash Flows

(In thousands)

(Unaudited)

Midstates Petroleum Company, Inc.

Selected Financial and Operating Statistics

(Unaudited)

(1)         Includes $0.73, $1.18, $0.84 and $0.70 per Boe for share-based compensation for the three months ended September 30, 2013, the three months ended September 30, 2012, the nine months ended September 30, 2013 and the nine months ended September 30, 2012.

(2)         The Company did not have hedges in place on its natural gas or NGL production until October 1, 2012.

Midstates Petroleum Company, Inc.

Summary of Commodity Derivative Contracts as of September 30, 2013

(including any new hedges entered into through November 12, 2013)

(Unaudited)