Results of Operations and Financial Condition. On August 3, 2026, Gulfport Energy Corporation (“Gulfport”) issued a press release reporting its financial and operating results for the three months ended June 30, 2026, and provided updates on its financial position, recent inventory additions and the outlook for its discretionary acreage acquisition program. A copy of the press release and supplemental financial information are attached as Exhibit 99.1 and Exhibit 99.2, respectively, to this C…

President and Chief Executive Officer — Domenic J. Dell’Osso, Jr.: The company appointed a new CEO with extensive experience in the energy sector.

Results of Operations and Financial Condition. On May 5, 2026, Gulfport Energy Corporation (“Gulfport”) issued a press release reporting its financial and operating results for the three months ended March 31, 2026, reaffirmed its 2026 development plan and provided an update on its financial position. A copy of the press release and supplemental financial information are attached as Exhibit 99.1 and Exhibit 99.2, respectively, to this Current Report on Form 8-K.

President, Chief Executive Officer and Director — John Reinhart: John Reinhart resigned as President, Chief Executive Officer and Director of the Company.

Regulation FD Disclosure. On March 3, 2026 Gulfport Energy Corporation (the “Company”) entered into a purchase agreement (the “Purchase Agreement”) with certain accounts managed and advised by Silver Point Capital, L.P. (the “Selling Stockholders”). Pursuant to the Purchase Agreement, the Company agreed to purchase from the Selling Stockholders an aggregate of 84,416 shares of the Company’s common stock, par value $0.0001 (“Common Stock”), at a price of $204.22 per share, representing a 2.3%…

Results of Operations and Financial Condition. On February 24, 2026, Gulfport Energy Corporation (“Gulfport”) issued a press release reporting its financial and operating results for the three months and full year ended December 31, 2025, and provided its 2026 operational and financial guidance. A copy of the press release and supplemental financial information are attached as Exhibit 99.1 and Exhibit 99.2, respectively, to this Current Report on Form 8-K.

Regulation FD Disclosure. On December 2, 2025, Gulfport Energy Corporation (the “Company”) entered into a purchase agreement (the “Purchase Agreement”) with certain accounts managed and advised by Silver Point Capital, L.P. (the “Selling Stockholders”). Pursuant to the Purchase Agreement, the Company agreed to purchase from the Selling Stockholders an aggregate of 45,546 shares of the Company’s common stock, par value $0.0001 (“Common Stock”), at a price of $219.56 per share, representing a 1…

Results of Operations and Financial Condition. On November 4, 2025, Gulfport Energy Corporation (“Gulfport”) issued a press release reporting its financial and operating results for the three months ended September 30, 2025. A copy of the press release and supplemental financial information are attached as Exhibit 99.1 and Exhibit 99.2, respectively, to this Current Report on Form 8-K.

Results of Operations and Financial Condition. On August 5, 2025, Gulfport Energy Corporation (“Gulfport”) issued a press release reporting its financial and operating results for the three months ended June 30, 2025 and announcing its expanded stock repurchase authorization and its preferred stock redemption, among other items. A copy of the press release and supplemental financial information are attached as Exhibit 99.1 and Exhibit 99.2, respectively, to this Current Report on Form 8-K.

Regulation FD Disclosure. On May 14, 2025, Gulfport Energy Corporation (the “Company”) entered into a purchase agreement (the “Purchase Agreement”) with certain accounts managed and advised by Silver Point Capital, L.P. (the “Selling Stockholders”). Pursuant to the Purchase Agreement, the Company agreed to purchase from the Selling Stockholders an aggregate of 76,986 shares of the Company’s common stock, par value $0.0001 (“Common Stock”), at a price of $194.84 per share, representing a 1.7%…

Results of Operations and Financial Condition. On May 6, 2025, Gulfport Energy Corporation (“Gulfport”) issued a press release reporting its financial and operating results for the three months ended March 31, 2025, and provided an update on its 2025 development plan and financial position. A copy of the press release and supplemental financial information are attached as Exhibit 99.1 and Exhibit 99.2, respectively, to this Current Report on Form 8-K.

Results of Operations and Financial Condition. On February 25, 2025, Gulfport Energy Corporation (“Gulfport”) issued a press release reporting its financial and operating results for the three months and full year ended December 31, 2024, and provided its 2025 operational and financial guidance. A copy of the press release and supplemental financial information are attached as Exhibit 99.1 and Exhibit 99.2, respectively, to this Current Report on Form 8-K.

Regulation FD Disclosure. On December 19, 2024, Gulfport Energy Corporation (the “Company”) entered into a purchase agreement (the “Purchase Agreement”) with certain accounts managed and advised by Silver Point Capital, L.P. (the “Selling Stockholders”). Pursuant to the Purchase Agreement, the Company agreed to purchase from the Selling Stockholders an aggregate of 79,410 shares of the Company’s common stock, par value $0.0001 (“Common Stock”), at a price of $162.81 per share, representing a…

Regulation FD Disclosure. On November 21, 2024, Gulfport Energy Corporation (the “Company”) entered into a purchase agreement (the “Purchase Agreement”) with certain accounts managed and advised by Silver Point Capital, L.P. (the “Selling Stockholders”). Pursuant to the Purchase Agreement, the Company agreed to purchase from the Selling Stockholders an aggregate of 150,000 shares of the Company’s common stock, par value $0.0001 (“Common Stock”), at a price of $175.60 per share, representing a…

Results of Operations and Financial Condition. On November 5, 2024, Gulfport Energy Corporation (“Gulfport”) issued a press release reporting its financial and operating results for the three months ended September 30, 2024, and provided an update on its 2024 development plan and financial guidance. A copy of the press release and supplemental financial information are attached as Exhibit 99.1 and Exhibit 99.2, respectively, to this Current Report on Form 8-K.

Regulation FD Disclosure. On September 19, 2024, Gulfport Energy Corporation (the “Company”) entered into a purchase agreement (the “Purchase Agreement”) with an account managed and advised by Silver Point Capital, L.P. (the “Selling Stockholder”). Pursuant to the Purchase Agreement, the Company agreed to purchase from the Selling Stockholder an aggregate of 170,000 shares of the Company’s common stock, par value $0.0001 (“Common Stock”), at a price of $146.25 per share, representing an appro…

Entry into a Material Definitive Agreement. The Notes and Indenture On September 13, 2024, Gulfport Energy Operating Corporation (the “Company”), a wholly owned subsidiary of Gulfport Energy Corporation (the “Parent Guarantor”), completed a private placement of $650,000,000 aggregate principal amount of 6.750% Senior Notes due 2029 (the “Notes”) to persons reasonably believed to be qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended (the “Securiti…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information set forth in

Accordingly, the information in the press releases will not be incorporated by reference into any registration statement filed by Gulfport under the Securities Act of 1933, as amended, unless specifically identified therein as being incorporated therein by reference. Forward Looking Statements The statements described herein that are not historical facts are forward-looking statements within the meaning of Section 27A of the Securities Act, and Section 21E of the Exchange Act. These statement…

Results of Operations and Financial Condition. On August 6, 2024, Gulfport Energy Corporation (“Gulfport”) issued a press release reporting its financial and operating results for the three months ended June 30, 2024, and provided an update on its 2024 development plan and financial guidance. A copy of the press release and supplemental financial information are attached as Exhibit 99.1 and Exhibit 99.2, respectively, to this Current Report on Form 8-K.

Results of Operations and Financial Condition. On April 30, 2024, Gulfport Energy Corporation (“Gulfport”) issued a press release reporting its financial and operational results for the three months ended March 31, 2024, and provided an update on its 2024 development plan and financial position. A copy of the press release and supplemental financial information are attached as Exhibit 99.1 and Exhibit 99.2, respectively, to this Current Report on Form 8-K.

Results of Operations and Financial Condition. On February 27, 2024, Gulfport Energy Corporation (“Gulfport”) issued a press release reporting its financial and operating results for the three months and full year ended December 31, 2023, and provided its 2024 operational and financial guidance. A copy of the press release and supplemental financial information are attached as Exhibit 99.1 and Exhibit 99.2, respectively, to this Current Report on Form 8-K.

Regulation FD Disclosure. On December 4, 2023, Gulfport Energy Corporation (the “Company”) entered into a purchase agreement (the “Purchase Agreement”) with certain accounts managed and advised by Silver Point Capital, L.P. and MacKay Shields LLC (the “Selling Stockholders”). Pursuant to the Purchase Agreement, the Company agreed to purchase from the Selling Stockholders an aggregate of 292,910 shares of the Company’s common stock, par value $0.0001 (“Common Stock”), at a price of $136.56 per…

Results of Operations and Financial Condition. On October 31, 2023, Gulfport Energy Corporation (“Gulfport”) issued a press release reporting its financial and operating results for the three months ended September 30, 2023, and provided an update on its 2023 development plan and financial guidance. A copy of the press release and supplemental financial information are attached as Exhibit 99.1 and Exhibit 99.2, respectively, to this Current Report on Form 8-K.

Other Events. On September 20, 2023, the Company announced that its board of directors expanded its common stock repurchase authorization to $650 million. This increased authorization extends the program through December 31, 2024.