Exhibit 99.1

Press Release

Gulfport Energy Corporation Reports Third Quarter 2016 Results

OKLAHOMA CITY (November 2, 2016) Gulfport Energy Corporation (NASDAQ: GPOR) (“Gulfport” or the “Company”) today reported financial and operational results for the quarter ended September 30, 2016 and provided an update on its 2016 activities. Key information for the third quarter of 2016 includes the following:

Michael G. Moore, Chief Executive Officer, commented, “Gulfport had a solid third quarter across the board, demonstrating our commitment to deliver on expectations. I am very proud of the continued hard work and commitment of all teams across the organization who came together to deliver these strong results and am encouraged by our momentum as we head into 2017.”

“With regard to our 2017 capital outlook and production growth, while we have not yet finalized the specifics of our anticipated full-year 2017 program, we continue to refine our thoughts

surrounding the potential six and eight-rig scenarios provided on our second quarter call. Given our hedge position and where commodity prices are currently trading, we feel confident in establishing a six-rig program as a base level of activity for 2017, with the potential to add additional rigs during the year. We currently are utilizing four rigs and have already contracted two additional rigs, one of which is currently moving to location and the other rig is scheduled to begin operations in December. ”

Third Quarter Financial Results

For the third quarter of 2016, Gulfport reported a net loss of $157.3 million, or $1.25 per diluted share, on oil and natural gas revenues of $193.7 million. For the third quarter of 2016, EBITDA (as defined and reconciled below) was $126.8 million and cash flow from operating activities before changes in operating assets and liabilities (as defined and reconciled below) was $109.1 million. Gulfport’s GAAP net loss for the third quarter of 2016 includes the following items:

Excluding the effect of these items, Gulfport’s financial results for the third quarter of 2016 would have been as follows:

Year-To-Date 2016 Financial Results

For the nine-month period ended September 30, 2016, Gulfport reported a net loss of $739.3 million, or $6.12 per diluted share, on oil and natural gas revenues of $322.5 million. For the nine-month period ended September 30, 2016, EBITDA (as defined and reconciled below) was $87.8 million and cash flow from operating activities before changes in operating assets and liabilities (as defined and reconciled below) was $280.8 million. Gulfport’s GAAP net loss for the nine-month period ended September 30, 2016 includes the following items:

Excluding the effect of these items, Gulfport’s financial results for the nine-month period ended September 30, 2016 would have been as follows:

Production and Realized Prices

Gulfport’s net daily production for the third quarter of 2016 averaged approximately 734.1 MMcfe per day. For the third quarter of 2016, Gulfport’s net daily production mix was comprised of approximately 86% natural gas, 9% natural gas liquids (“NGL”) and 5% oil.

Gulfport’s realized prices for the third quarter of 2016 were $2.67 per Mcf of natural gas, $45.09 per barrel of oil and $0.34 per gallon of NGL, resulting in a total equivalent price of $2.87 per Mcfe. Gulfport’s realized prices for the third quarter of 2016 include an aggregate non-cash derivative gain of $22.4 million. Before the impact of derivatives, realized prices for the third quarter of 2016, including transportation costs, were $2.10 per Mcf of natural gas, $41.81 per barrel of oil and $0.33 per gallon of NGL, for a total equivalent price of $2.35 per Mcfe.

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PRODUCTION SCHEDULE

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For the fourth quarter of 2016, Gulfport currently estimates that its net production will range from 765 MMcfe per day to 790 MMcfe per day and full-year 2016 net production guidance remains unchanged at 695 MMcfe per day to 730 MMcfe per day.

2016 Financial Position and Liquidity

For the nine-month period ended September 30, 2016, Gulfport’s drilling and completion capital expenditures totaled $369.2 million, midstream capital expenditures totaled $4.0 million and leasehold capital expenditures (net of proceeds from leasehold sales) totaled $9.8 million.

Mr. Moore commented, “With regard to our leasehold position, we continue to high-grade our acreage within our portfolio and focus our efforts on consolidating our premium, core position in the wet gas and dry gas windows of the play. With this in mind, during the third quarter of 2016 we sold a non-core exploratory acreage position in West Virginia and have already started to reinvest the net proceeds from this sale just across the border in the dry gas window in Ohio. We believe a significant organic leasing opportunity is unfolding in an area where infrastructure build out is underway and where we experience favorable economic returns.”

As of September 30, 2016, Gulfport had cash on hand of approximately $364.3 million. In addition, as of September 30, 2016, Gulfport’s revolving credit facility of $700 million was undrawn and had $493.0 million available for future borrowing after giving effect to outstanding letters of credit totaling $207.0 million.

Operational Update

Utica Shale

In the Utica Shale, during the third quarter of 2016, Gulfport spud 9 gross (8.8 net) wells and turned-to-sales 21 gross (15.8 net) operated wells and 13 gross (3.9 net) non-operated wells. During the third quarter of 2016, net production from Gulfport’s Utica acreage averaged approximately 713.0 MMcfe per day, an increase of 11% over the second quarter of 2016 and an increase of 14% over the third quarter of 2015. Field level compression remains on schedule to begin phasing-in across Gulfport’s dry gas position around year-end 2016.

Gulfport continues to realize operational efficiency gains in the Utica Shale and for the nine-month period ended September 30, 2016, Gulfport spud 31 gross wells with an average lateral length of approximately 8,520 feet and average drilling days from spud to rig release of approximately 25 days. In addition, Gulfport turned-to-sales 43 gross wells with an average lateral length of approximately 8,485 feet and average of approximately 9 stages completed per day. For the nine-month period ended September 30, 2016, Gulfport’s well costs averaged approximately $1,085 per foot of lateral in the Utica Shale.

At present, Gulfport has four operated horizontal rigs drilling in the play and has contracted its fifth and sixth horizontal drilling rigs to begin operations in November 2016 and December 2016, respectively.

Southern Louisiana

At its West Cote Blanche Bay and Hackberry fields, during the third quarter of 2016, Gulfport performed 24 recompletions and net production totaled approximately 20.2 MMcfe per day.

2016 Capital Budget and Production Guidance

Gulfport reaffirms its 2016 capital budget and production guidance. The table below summarizes the Company’s full year 2016 guidance:

GULFPORT ENERGY CORPORATION

COMPANY GUIDANCE

Derivatives

Gulfport has hedged a portion of its expected production to lock in prices and returns that provide certainty of cash flow to execute on its capital plans. The table below sets forth the Company’s hedging positions as of November 2, 2016.

GULFPORT ENERGY CORPORATION

COMMODITY DERIVATIVES - HEDGE POSITION AS OF NOVEMBER 2, 2016

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Presentation

An updated presentation has been posted to the Company’s website. The presentation can be found at www.gulfportenergy.com under the “Company Information” section on the “Investor Relations” page. Information on the Company’s website does not constitute a portion of this press release.

Conference Call

Gulfport will hold a conference call on Thursday, November 3, 2016 at 8:00 a.m. CDT to discuss its third quarter of 2016 financial and operational results and to provide an update on the Company’s recent activities.

Interested parties may listen to the call via Gulfport’s website at www.gulfportenergy.com or by calling toll-free at 866-373-3408 or 412-902-1039 for international callers. A replay of the call will be available for two weeks at 877-660-6853 or 201-612-7415 for international callers. The replay passcode is 13622396. The webcast will also be available for two weeks on the Company’s website and can be accessed on the Company’s “Investor Relations” page.

About Gulfport

Gulfport Energy Corporation is an Oklahoma City-based independent oil and natural gas exploration and production company with its principal producing properties located in the Utica Shale of Eastern Ohio and along the Louisiana Gulf Coast. In addition, Gulfport holds a sizeable acreage position in the Alberta Oil Sands in Canada through its 25% interest in Grizzly Oil Sands ULC.

Forward Looking Statements

This press release includes “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). All statements, other than statements of historical facts, included in this press release that address activities, events or developments that Gulfport expects or anticipates will or may occur in the future, future capital expenditures (including the amount and nature thereof), business strategy and measures to implement strategy, competitive strength, goals, expansion and growth of Gulfport’s business and operations, plans, market conditions, references to future success, reference to intentions as to future matters and other such matters are forward-looking statements. These statements are based on certain assumptions and analyses made by Gulfport in light of its experience and its perception of historical trends, current conditions and expected future developments as well as other factors it believes are appropriate in the circumstances. However, whether actual results and developments will conform with Gulfport’s expectations and predictions is subject to a number of risks and uncertainties, general economic, market, credit or business conditions; the opportunities (or lack thereof) that may be presented to and pursued by Gulfport; Gulfport’s ability to identify, complete and integrate acquisitions of properties and businesses; competitive actions by other oil and gas companies; changes in laws or regulations; and other factors, many of which are beyond the control of Gulfport. Information concerning these and other factors can be found in the Company’s filings with the Securities and Exchange Commission, including its Forms 10-K, 10-Q and 8-K. Consequently, all of the forward-looking statements made in this news release are qualified by these cautionary statements and there can be no assurances that the actual results or developments anticipated by Gulfport will be realized, or even if realized, that they will have the expected consequences to or effects on Gulfport, its business or operations. Gulfport has no intention, and disclaims any obligation, to update or revise any forward-looking statements, whether as a result of new information, future results or otherwise.

Non-GAAP Financial Measures

EBITDA is a non-GAAP financial measure equal to net (loss) income, the most directly comparable GAAP financial measure, plus interest expense, income tax (benefit) expense, accretion expense, depreciation, depletion and amortization and impairment of oil and gas properties. Adjusted EBITDA is a non-GAAP financial measure equal to EBITDA less non-cash derivative (gain) loss, impairment of Grizzly equity investment, insurance proceeds and (income) loss from equity method investments. Cash flow from operating activities before changes in operating assets and liabilities is a non-GAAP financial measure equal to cash provided by

operating activity before changes in operating assets and liabilities. Adjusted net income is a non-GAAP financial measure equal to pre-tax net loss less non-cash derivative (gain) loss, impairment of oil and gas properties, impairment of Grizzly equity investment, insurance proceeds and (income) loss from equity method investments plus tax benefit excluding adjustments. The Company has presented EBITDA and adjusted EBITDA because it uses these measures as an integral part of its internal reporting to evaluate its performance and the performance of its senior management. These measures are considered important indicators of the operational strength of the Company’s business and eliminate the uneven effect of considerable amounts of non-cash depletion, depreciation of tangible assets and amortization of certain intangible assets. A limitation of these measures, however, is that they do not reflect the periodic costs of certain capitalized tangible and intangible assets used in generating revenues in the Company’s business. Management evaluates the costs of such tangible and intangible assets and the impact of related impairments through other financial measures, such as capital expenditures, investment spending and return on capital. Therefore, the Company believes that these measures provide useful information to its investors regarding its performance and overall results of operations. EBITDA, adjusted EBITDA, adjusted net income and cash flow from operating activities before changes in operating assets and liabilities are not intended to be performance measures that should be regarded as an alternative to, or more meaningful than, either net income as an indicator of operating performance or to cash flows from operating activities as a measure of liquidity. In addition, EBITDA, adjusted EBITDA, adjusted net income and cash flow from operating activities before changes in operating assets and liabilities are not intended to represent funds available for dividends, reinvestment or other discretionary uses, and should not be considered in isolation or as a substitute for measures of performance prepared in accordance with GAAP. The EBITDA, adjusted EBITDA, adjusted net income and cash flow from operating activities before changes in operating assets and liabilities presented in this press release may not be comparable to similarly titled measures presented by other companies, and may not be identical to corresponding measures used in the Company’s various agreements.

Investor & Media Contact:

Paul Heerwagen – Vice President, Corporate Development

pheerwagen@gulfportenergy.com

405-242-4888

Jessica Wills – Manager, Investor Relations and Research

jwills@gulfportenergy.com

405-242-4421

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CONSOLIDATED STATEMENTS OF OPERATIONS

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CONSOLIDATED BALANCE SHEETS

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RECONCILIATION OF EBITDA AND CASH FLOW

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RECONCILIATION OF ADJUSTED EBITDA

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RECONCILIATION OF ADJUSTED NET INCOME

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