Exhibit 99.1

Gulfport Energy Reports Third Quarter 2025 Financial and Operating Results

OKLAHOMA CITY (November 4, 2025) Gulfport Energy Corporation (NYSE: GPOR) (“Gulfport” or the “Company”) today reported financial and operating results for the three months ended September 30, 2025.

Key Highlights

Third Quarter 2025

Updated Full Year 2025 Outlook

John Reinhart, President and CEO, commented, “We are pleased to announce a significant expansion of our drillable inventory, driven by further delineation of the Ohio Marcellus across our acreage position as well as our team’s successful execution in drilling our first U-development wells within our Utica acreage footprint. In the Marcellus, recent peer activity combined with Gulfport’s own development has expanded resource viability to the north, capturing significant, incremental value overlying our Utica development at no incremental land cost and effectively doubling our net drillable Marcellus inventory.”

Reinhart continued, “As part of our evaluation of U-development, we are investing approximately $30 million in discretionary appraisal capital during 2025, which includes the drilling and completion of two U-development wells in the Utica. These wells were recently successfully drilled and are scheduled for completion in the coming months, validating the technical feasibility of this development concept across our acreage position. This discretionary investment adds nearly one net year of high-quality, dry gas inventory and unlocks previously uneconomic development at no additional land cost to the Company, further enhancing our long-term development portfolio.”

Reinhart continued, “Since year-end 2022, Gulfport has grown our gross undeveloped inventory by more than 40%, driven by targeted discretionary acreage acquisitions, Marcellus delineation and U-development initiatives. We now estimate the Company holds approximately 700 gross locations across our asset base. These inventory additions unlock substantial value across our core assets, increasing economic inventory by approximately three years and bringing our total net inventory to roughly 15 years with break-evens below $2.50 per MMBtu, underscoring the high-quality, go-forward development opportunities in our portfolio.”

“In response to known production impacts predominately from simultaneous operations of an offsetting operator and planned third-party midstream maintenance downtime in the first quarter of 2026, Gulfport has proactively elected to invest approximately $35 million toward discretionary development activity during 2025. This proactive spend is expected to mitigate a portion of the forecasted upcoming production impact and position the Company to deliver volumes into a favorable commodity price environment, benefiting the 2026 development program. These incremental investments, ongoing discretionary acreage acquisitions and the repurchase of our common stock represent some of the most attractive uses of our available adjusted free cash flow. Considering this, we plan to repurchase approximately $125 million of our outstanding common stock during the fourth quarter of 2025, funded by adjusted free cash flow generation and available capacity on our revolving credit facility while maintaining financial leverage at or below one times,” concluded Reinhart.

A company presentation to accompany the Gulfport earnings conference call can be accessed by clicking here.

Gulfport’s net daily production for the third quarter of 2025 averaged 1,119.7 MMcfe per day, primarily consisting of 916.8 MMcfe per day in the Utica/Marcellus and 202.9 MMcfe per day in the SCOOP. For the third quarter of 2025, Gulfport’s net daily production mix was comprised of approximately 88% natural gas, 8% natural gas liquids (“NGL”) and 4% oil and condensate.

Capital Investment

Total base capital investment was $74.9 million (on an incurred basis) for the third quarter of 2025, of which $68.7 million related to operated base drilling and completion activity and $6.2 million related to maintenance leasehold and land investment. In addition, Gulfport invested $9.3 million on discretionary appraisal projects, including capital directed toward DUC activity and recomplete opportunities on historical Utica development and the Company’s first U-development in the Utica, and approximately $3.1 million on discretionary development activity. Gulfport also invested approximately $8.9 million in discretionary acreage acquisitions and incurred approximately $0.7 million related to non-operated drilling and completion activities.

For the nine-month period ended September 30, 2025, total base capital investment was $352.7 million (on an incurred basis), of which $329.3 million related to operated base drilling and completion activity and $23.4 million related to maintenance leasehold and land investment. In addition, Gulfport invested $15.4 million on appraisal projects, including capital directed toward DUC activity and recomplete opportunities on historical Utica development and the Company’s first U-development in the Utica, and approximately $3.1 million on discretionary development activity. Gulfport also invested approximately $15.7 million in discretionary acreage acquisitions and incurred approximately $2.2 million related to non-operated drilling and completion activities.

Stock Repurchase Program

Gulfport repurchased approximately 438.3 thousand shares of common stock (including the underlying shares of common stock into which the preferred stock was convertible) at a weighted-average price of $174.01 during the third quarter of 2025, totaling approximately $76.3 million. As of September 30, 2025, the Company had approximately $715.0 million of remaining capacity under the stock repurchase program.

Financial Position and Liquidity

As of September 30, 2025, Gulfport had approximately $3.4 million of cash and cash equivalents, $51.0 million of borrowings under its revolving credit facility, $48.7 million of letters of credit outstanding and $650.0 million of outstanding 2029 senior notes.

Gulfport’s liquidity at September 30, 2025, totaled approximately $903.7 million, comprised of the $3.4 million of cash and cash equivalents and approximately $900.3 million of available borrowing capacity under its credit facility.

Credit Facility Borrowing Base Redetermination

On October 30, 2025, Gulfport completed its semi-annual borrowing base redetermination during which the borrowing base was reaffirmed at $1.1 billion with elected commitments remaining at $1.0 billion.

Derivatives

Gulfport enters into commodity derivative contracts on a portion of its expected future production volumes to mitigate the Company’s exposure to commodity price fluctuations. For details, please refer to the “Derivatives” section provided with the supplemental financial tables available on our website at ir.gulfportenergy.com.

2024 - 2025 Corporate Sustainability Report

Gulfport is committed to environmental stewardship, sustainable practices and strong corporate governance. The Company’s sustainability report can be found under “Sustainability” on www.gulfportenergy.com. Gulfport published its 2024 - 2025 Corporate Sustainability Report on November 4, 2025.

Third Quarter 2025 Conference Call

Gulfport will host a teleconference and webcast to discuss its third quarter of 2025 results beginning at 9:00 a.m. ET (8:00 a.m. CT) on Wednesday, November 5, 2025.

The conference call can be heard live through a link on the Gulfport website, www.gulfportenergy.com. In addition, you may participate in the conference call by dialing 866-373-3408 domestically or 412-902-1039 internationally. A replay of the conference call will be available on the Gulfport website and a telephone audio replay will be available from November 5, 2025 to November 19, 2025, by calling 877-660-6853 domestically or 201-612-7415 internationally and then entering the replay passcode 13756501. 

Financial Statements and Guidance Documents

Third Quarter of 2025 earnings results and supplemental information regarding quarterly data such as production volumes, pricing, financial statements and non-GAAP reconciliations are available on our website at ir.gulfportenergy.com.

Non-GAAP Disclosures

This news release includes non-GAAP financial measures. Such non-GAAP measures should be not considered as an alternative to GAAP measures. Reconciliations of these non-GAAP measures and other disclosures are provided with the supplemental financial tables available on our website at ir.gulfportenergy.com.

About Gulfport

Gulfport is an independent natural gas-weighted exploration and production company focused on the exploration, acquisition and production of natural gas, crude oil and NGL in the United States with primary focus in the Appalachia and Anadarko basins. Our principal properties are located in eastern Ohio targeting the Utica and Marcellus formations and in central Oklahoma targeting the SCOOP Woodford and SCOOP Springer formations.

Forward Looking Statements

This press release includes “forward-looking statements” for purposes of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934. These statements involve known and unknown risks, uncertainties and other factors that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements. In some cases, you can identify forward-looking statements by terms such as “may,” “will,” “should,” “could,” “would,” “expects,” “plans,” “anticipates,” “intends,” “believes,” “estimates,” “projects,” “predicts,” “potential” and similar expressions intended to identify forward-looking statements. All statements, other than statements of historical facts, included in this press release that address activities, events or developments that we expect or anticipate will or may occur in the future, including the expected impact of U.S. trade policy and its impact on broader economic conditions, the war in Ukraine and the conflict in the Middle East on our business, our industry and the global economy, estimated future production and net revenues from oil and gas reserves and the present value thereof, future capital expenditures (including the amount and nature thereof), share repurchases, business strategy and measures to implement strategy, competitive strength, goals, expansion and growth of our business and operations, plans, references to future success, reference to intentions as to future matters and other such matters are forward-looking statements. Gulfport believes the expectations and forecasts reflected in the forward-looking statements are reasonable, Gulfport can give no assurance they will prove to have been correct. They can be affected by inaccurate or changed assumptions or by known or unknown risks and uncertainties. Important risks, assumptions and other important factors that could cause future results to differ materially from those expressed in the forward-looking statements are described under “Risk Factors” in Item 1A of Gulfport’s annual report on Form 10-K for the year ended December 31, 2024 and any updates to those factors set forth in Gulfport’s subsequent quarterly reports on Form 10-Q or current reports on Form 8-K (available at https://www.gulfportenergy.com/investors/sec-filings). Gulfport undertakes no obligation to release publicly any revisions to any forward-looking statements, to report events or to report the occurrence of unanticipated events.

Investors should note that Gulfport announces financial information in SEC filings, press releases and public conference calls.  Gulfport may use the Investors section of its website (www.gulfportenergy.com) to communicate with investors.  It is possible that the financial and other information posted there could be deemed to be material information.  The information on Gulfport’s website is not part of this filing.

Investor Contact:

Jessica Antle – Vice President, Investor Relations

jantle@gulfportenergy.com

405-252-4550

Exhibit 99.2

Three months and nine months ended September 30, 2025

Supplemental Information of Gulfport Energy

Production Volumes by Asset Area: Three months ended September 30, 2025

Totals may not sum or recalculate due to rounding.

Production Volumes by Asset Area: Nine months ended September 30, 2025

Totals may not sum or recalculate due to rounding.

Production and Pricing: Three months ended September 30, 2025

The following table summarizes production and related pricing for the three months ended September 30, 2025, as compared to such data for the three months ended September 30, 2024:

Totals may not sum or recalculate due to rounding.

Production and Pricing: Nine months ended September 30, 2025

The following table summarizes production and related pricing for the nine months ended September 30, 2025, as compared to such data for the nine months ended September 30, 2024:

Totals may not sum or recalculate due to rounding.

Consolidated Statements of Income: Three months ended September 30, 2025

(In thousands, except per share data)

(Unaudited)

Consolidated Statements of Income: Nine months ended September 30, 2025

(In thousands, except per share data)

(Unaudited)

Consolidated Statement of Cash Flows: Three months ended September 30, 2025

(In thousands)

(Unaudited)

Consolidated Statement of Cash Flows: Nine months ended September 30, 2025

(In thousands)

(Unaudited)

Non-GAAP Reconciliations

Gulfport’s management uses certain non-GAAP financial measures for planning, forecasting and evaluating business and financial performance, and believes that they are useful tools to assess Gulfport’s operating results. Although these are not measures of performance calculated in accordance with generally accepted accounting principles (GAAP), management believes that these financial measures are useful to an investor in evaluating Gulfport because (i) analysts utilize these metrics when evaluating company performance and have requested this information as of a recent practicable date, (ii) these metrics are widely used to evaluate a company’s operating performance, and (iii) we want to provide updated information to investors. Investors should not view these metrics as a substitute for measures of performance that are calculated in accordance with GAAP. In addition, because all companies do not calculate these measures identically, these measures may not be comparable to similarly titled measures of other companies.

These non-GAAP financial measures include adjusted net income, adjusted EBITDA, adjusted free cash flow, and recurring general and administrative expense. A reconciliation of each financial measure to its most directly comparable GAAP financial measure is included in the tables below. These non-GAAP measure should be considered in addition to, but not instead of, the financial statements prepared in accordance with GAAP.

Definitions

Adjusted net income is a non-GAAP financial measure equal to net income (loss) less non-cash derivative loss (gain), impairment of oil and natural gas properties, non-recurring general and administrative expenses comprised of expenses related to the continued administration of our prior Chapter 11 filing, stock-based compensation expenses, loss on debt extinguishment, other non-material expenses and the tax effect of the adjustments to net income (loss).

Adjusted EBITDA is a non-GAAP financial measure equal to net income (loss), the most directly comparable GAAP financial measure, plus interest expense, income tax expense (benefit), depreciation, depletion, amortization, impairment and accretion, non-cash derivative loss (gain), non-recurring general and administrative expenses comprised of expenses related to the continued administration of our prior Chapter 11 filing, stock-based compensation, loss on debt extinguishment and other non-material expenses.

Adjusted free cash flow is a non-GAAP measure defined as adjusted EBITDA plus certain non-cash items that are included in net cash provided by operating activities but excluded from adjusted EBITDA less interest expense, current income tax expense (benefit), capitalized expenses incurred and capital expenditures incurred. Gulfport includes an adjusted free cash flow estimate for 2025. We are unable, however, to provide a quantitative reconciliation of the forward-looking non-GAAP measure to its most directly comparable forward-looking GAAP measure because management cannot reliably quantify certain of the necessary components of such forward-looking GAAP measure. Accordingly, Gulfport is relying on the exception provided by Item 10(e)(1)(i)(B) of Regulation S-K to exclude such reconciliation. Items excluded in net cash provided by (used in) operating activities to arrive at adjusted free cash flow include interest expense, income taxes, capitalized expenses as well as one-time items or items whose timing or amount cannot be reasonably estimated.

Recurring general and administrative expense is a non-GAAP financial measure equal to general and administrative expense (GAAP) plus capitalized general and administrative expense, less non-recurring general and administrative expenses comprised of expenses related to the continued administration of our prior Chapter 11 filing. Gulfport includes a recurring general and administrative expense estimate for 2025. We are unable, however, to provide a quantitative reconciliation of the forward-looking non-GAAP measure to its most directly comparable forward-looking GAAP measure because management cannot reliably quantify certain of the necessary components of such forward-looking GAAP measure. Accordingly, Gulfport is relying on the exception provided by Item 10(e)(1)(i)(B) of Regulation S-K to exclude such reconciliation. Items excluded in general and administrative expense to arrive at recurring general and administrative expense include capitalized expenses as well as one-time items or items whose timing or amount cannot be reasonably estimated. The non-GAAP measure recurring general and administrative expenses allows investors to compare Gulfport’s total general and administrative expenses, including capitalization, to peer companies that account for their oil and gas operations using the successful efforts method.

Adjusted Net Income: Three months ended September 30, 2025

(In thousands)

(Unaudited)

Adjusted Net Income: Nine months ended September 30, 2025

(In thousands)

(Unaudited)

Adjusted EBITDA: Three months ended September 30, 2025

(In thousands)

(Unaudited)

Adjusted EBITDA: Nine months ended September 30, 2025

(In thousands)

(Unaudited)

Adjusted Free Cash Flow: Three months ended September 30, 2025

(In thousands)

(Unaudited)

Adjusted Free Cash Flow: Nine months ended September 30, 2025

(In thousands)

(Unaudited)

Recurring General and Administrative Expenses:

Three months ended September 30, 2025

(In thousands)

(Unaudited)

Recurring General and Administrative Expenses:

Nine months ended September 30, 2025

(In thousands)

(Unaudited)