UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

Amendment No. 3

to

FORM T-3

FOR APPLICATIONS FOR QUALIFICATION OF INDENTURES

UNDER THE TRUST INDENTURE ACT OF 1939

Gulfport Energy Operating Corporation

(f/k/a Gulfport Energy Corporation)

(Issuer)

Gulfport Energy Corporation (f/k/a Reorganized Gulfport Holdco, Inc.)

Gator Marine Ivanhoe, Inc.

Gator Marine, Inc.

Gulfport Appalachia, LLC

Gulfport Midstream Holdings, LLC

Grizzly Holdings, Inc.

Gulfport Midcon, LLC

Jaguar Resources LLC

Mule Sky LLC

Puma Resources, Inc.

Westhawk Minerals LLC

(Guarantors)

(Name of Applicants)

Gulfport Energy Corporation

3001 Quail Springs Parkway

Oklahoma City, Oklahoma

(Address of principal executive offices)

Securities to be Issued under the Indenture to be Qualified

Approximate date of proposed public offering: As soon as practicable on or after the Effective Date under the Plan (as defined herein).

The Applicants hereby amend this Application for Qualification on such date or dates as may be necessary to delay its effectiveness until (i) the 20th day after the filing of an amendment which specifically states that it shall supersede this Application for Qualification, or (ii) such date as the Securities and Exchange Commission, acting pursuant to Section 307(c) of the Trust Indenture Act of 1939 (the “Trust Indenture Act”), may determine upon the written request of the Applicants.

GENERAL

1. General Information.

Gulfport Energy Operating Corporation (f/k/a Gulfport Energy Corporation) is a corporation incorporated in the State of Delaware (the “Issuer” or the “Company”). The guarantors identified below (the “Guarantors” and, together with the Issuer, the “Applicants”) have the following forms of organization or incorporation and jurisdictions of formation.

The Amended Joint Chapter 11 Plan of Reorganization of Gulfport Energy Corporation and its Debtor Subsidiaries, dated as of April 14, 2021 (the “Plan”) contemplated, among other things, the issuance of $550,000,000 aggregate principal amount of the Issuer’s 8.0% Senior 1145 Notes due 2026 (the “New Notes”), on a pro rata basis, to holders of the 6.625% senior notes due 2023, 6.000% senior notes due 2024, 6.375% senior notes due 2025 and 6.375% senior notes due 2026, in each case, issued by Debtor Gulfport Energy Corporation, a Delaware corporation (collectively, the “Old Notes”). The Old Notes were cancelled upon effectiveness of the Plan.

Prior to the Effective Date, as defined below, the entity formerly known as Gulfport Energy Corporation merged with and into a subsidiary of a newly formed subsidiary of Gulfport Energy Corporation, Reorganized Gulfport Holdco, with Gulfport Energy Corporation as the surviving entity. In connection with the merger, Gulfport Energy Corporation changed its name to Gulfport Energy Operating Corporation, and Reorganized Gulfport Holdco changed its name to Gulfport Energy Corporation (the “Parent Guarantor”) and will be a guarantor of the notes. On a post-restructuring basis, therefore, Gulfport Energy Operating Corporation will be the name of the issuer of the New Notes. The transactions described in this paragraph are referred to herein as the “Reorganization.”

2. Securities Act Exemption Applicable.

The Applicants hereby acknowledge that under Section 306(c) of the Trust Indenture Act, it shall be unlawful for any person, directly or indirectly, to make use of any means or instruments of transportation or communication in interstate commerce or of the mails to offer or sell through the use or medium of any prospectus or otherwise any security which is not registered under the Securities Act of 1933, as amended, and to which Section 306(c) is applicable notwithstanding the provisions of Section 304 of the Trust Indenture Act, unless such security has been or is to be issued under an indenture and an application for qualification has been filed as to such indenture, or while the application is the subject of a refusal order or stop order or (prior to qualification) any public proceeding or examination under Section 307(c) of the Trust Indenture Act. The failure to file an application for qualification of an indenture on a timely basis could result in an enforcement or other action by the Securities and Exchange Commission.

An application for qualification with respect to the Indenture was not filed until after the solicitation of votes with respect to the Plan of Reorganization had commenced, and such solicitation of votes occurred prior to qualification of the Indenture under the Trust Indenture Act. Additionally, the New Notes were issued prior to qualification of the Indenture under the Trust Indenture Act. It was not certain prior to solicitation what the parties would determine to be the terms of the indenture governing the notes, and whether such notes would ultimately be issued pursuant to the exemption provided under Section 1145 of the Bankruptcy Code (as defined below) or Section 4(a)(2) of the Securities Act. Therefore, the Company believes it would have been premature to file the Form T-3 prior to those details being determined. The Applicants believe that the purposes behind the requirement to file a Form T-3 (namely the provision of adequate disclosure to the persons being asked to make an investment decision in respect of the securities in question through the qualification of the indentures) were served prior to the filing of this Form T-3 with respect to the New Notes. The holders of the substantial majority of the Old Notes were at all times adequately represented by counsel during the offering of the New Notes. Moreover, these holders actively negotiated for the terms of the New Notes and the Indenture governing the New Notes contained in the Disclosure Statement and Plan of Reorganization. Furthermore, the holders of Old Notes had and continue to have access to a significant amount of information regarding the Applicants by virtue of both (i) having been creditors of the Company for an extensive period of time and (ii) having had access to the reports and other information that had been filed with the Securities and Exchange Commission by the Company, which is required to file reports with the Securities and Exchange Commission and is current in its reporting obligations. The Applicants also believe that the Indenture governing the New Notes contains terms and conditions that are in line with market standard terms and conditions to which investors have become accustomed for transactions of this type. Moreover, pursuant to the terms of the Indenture, holders of the New Notes have been provided the same protections as those provided by the Trust Indenture Act, even though the Indenture was not qualified under the Trust Indenture Act prior to the solicitation of votes or the issuance of the New Notes.

The Indenture is subject to the mandatory provisions of the Trust Indenture Act and such provisions are incorporated by reference into and were made a part of the Indenture. The Indenture provides that if any provision of the Indenture limits, qualifies or conflicts with another provision which is required to be included in the Indenture by the Trust Indenture Act, the required provision of the Trust Indenture Act shall control.

The Indenture was filed with the U.S. Bankruptcy Court for the Southern District of Texas, Houston Division.

Pursuant to the terms of the Plan, under chapter 11 of title 11 of the United States Code (the “Bankruptcy Code”), the Issuer has issued the New Notes under the indenture to be qualified hereby (the “Indenture”), to all Holders (as defined in the Plan) of Allowed General Unsecured Claims (as defined in the Plan) and Allowed Notes Claims (as defined in the Plan).

The Plan became effective on the date on which all conditions to the effectiveness of the Plan were satisfied or waived (the “Effective Date”).

The issuance of the New Notes was exempt from registration under the Securities Act of 1933, as amended (the “Securities Act”), pursuant to the exemption provided by Section 1145(a)(1) of the Bankruptcy Code. Section 1145(a)(1) of the Bankruptcy Code exempts an offer and sale of securities under a plan of reorganization from registration under the Securities Act and state securities laws if three principal requirements are satisfied: (i) the securities must be offered and sold under a plan of reorganization and must be securities of the debtor, an affiliate participating in a joint plan with the debtor or a successor to the debtor under the plan of reorganization; (ii) the recipients of the securities must hold a prepetition or administrative expense claim against the debtor or an interest in the debtor; and (iii) the securities must be issued entirely in exchange for the recipient’s claim against or interest in the debtor, or principally in such exchange and partly for cash or property. The Applicants believe that the issuance of the New Notes satisfied the aforementioned requirements. See “Article IV Means For Implementation of This Plan – E. Exemption from Registration Requirements” of the Plan.

AFFILIATIONS

3. Affiliates.

The following describes the Company’s wholly-owned direct, or wholly-owned indirect, subsidiaries as of the the date of this Application:

As a result of the Reorganization and at the time of the Effective Date, Gulfport Energy Corporation changed its name to Gulfport Energy Operating Corporation, and Gulfport Energy Operating Corporation became the record owner of each of the subsidiaries attributable to Gulfport Energy Operating Corporation listed above, other than Reorganized Gulfport Holdco, which adopted the name Gulfport Energy Corporation and will be a publicly traded company with the ownership outlined in Item 5 “Principal Owners of Voting Securities.”

Certain directors and officers of the Applicants may be deemed to be “affiliates” of the Applicants by virtue of their positions with the Applicants. See Item 4, “Directors and Executive Officers.”

Certain persons may be deemed to be “affiliates” of the Applicants by virtue of their holdings of the voting securities of the Applicants. See Item 5, “Principal Owners of Voting Securities.”

MANAGEMENT AND CONTROL

4. Directors and Executive Officers.

The names of the directors and executive officers of the Issuer, as of the date hereof, are set forth below. The mailing address for each director and executive officer is: c/o 3001 Quail Springs Parkway, Oklahoma City, Oklahoma 73134 and each person’s telephone number is (405) 252-4600.

5. Principal Owners of Voting Securities.

(a ) The following table sets forth certain information regarding each person known to the Issuer to own 10 percent or more of the voting securities of the Guarantors as of the date of this Application.

As a result of the Reorganization and at the time of the Effective Date, Gulfport Energy Corporation changed its name to Gulfport Energy Operating Corporation, and Gulfport Energy Operating Corporation became the holder of each of the subsidiaries previously attributable to Gulfport Energy Corporation, other than Reorganized Gulfport Holdco, which adopted the name Gulfport Energy Corporation and will be a publicly traded company with the ownership outlined below.

(b) The following table sets forth certain information regarding each person that owned 10 percent or more of the voting securities of the Issuer as of the Effective Date.

(c) The following table sets forth certain information regarding each person that owned 10 percent or more of the voting securities of the Parent Guarantor as of the Effective Date.

UNDERWRITERS

6. Underwriters.

(a) Within three years prior to the date of the filing of this Application, no person acted as an underwriter of any securities of the Applicants that are currently outstanding on the date of this Application.

(b) There is no proposed principal underwriter for the New Notes that are to be issued in connection with the Indenture that is to be qualified under this Application.

CAPITAL SECURITIES

7. Capitalization.

(a) The following tables set forth certain information with respect to each authorized class of securities of the Issuer as of the date of this Application.

Upon consummation of the Plan, the Issuer’s capital structure was comprised of the Common Stock and New Notes set forth in the table above. The New Notes have been guaranteed by each of the Guarantors.

In accordance with the Plan, all agreements, instruments and other documents evidencing, relating to or otherwise connected with any of the equity interests of the Issuer prior to the Effective Date were cancelled, released and extinguished without any distribution, and any and all outstanding obligations under the Old Notes were cancelled.

INDENTURE SECURITIES

8. Analysis of Indenture Provisions.

The New Notes are subject to the new Indenture entered into among the Company, the Parent Guarantor, the Guarantors and UMB Bank, Nation Association, as trustee (the “Trustee”). The following is a general description of certain provisions included in the Indenture, and the description is qualified in its entirety by reference to the form of Indenture filed as Exhibit T3C.1 herewith. The terms of the New Notes are described in the term sheet relating to the New Notes, which is included as part of Exhibit I to the Restructuring Support Agreement approved as part of the Plan. Capitalized terms used below and not defined herein have the meanings ascribed to them in the Indenture. References to articles and sections below are to the applicable articles and sections of the Indenture, unless otherwise noted.

An “Event of Default” occurs if:

or takes any comparable action under any foreign laws relating to insolvency;

or any similar relief is granted under any foreign laws and, in each case, the order or decree remains unstayed and in effect for 60 days;

The foregoing will constitute Events of Default whatever the reason for any such Event of Default and whether it is voluntary or involuntary or is effected by operation of law or pursuant to any judgment, decree or order of any court or any order, rule or regulation of any administrative or governmental body.

A Default under clauses (4) and (5) shall not constitute an Event of Default until the Trustee or the holders of 30% in principal amount of the outstanding Securities notify the Company of the Default and the Company does not cure such Default within the time specified after receipt of such notice. Such notice must specify the Default, demand that it be remedied, and state that such notice is a “Notice of Default”.

If a Default occurs, is continuing and is known to the Trustee, the Trustee shall send to each Securityholder notice of the Default within 90 days after it occurs. Except in the case of a Default in the payment of principal of or interest on any Security (including payments pursuant to the mandatory purchase provisions of such Security), the Trustee may withhold the notice if and so long as a committee of its Trust Officers in good faith determines that withholding the notice is not opposed to the interests of the Securityholders.

Two Officers shall sign the Securities for the Company by manual or facsimile signature. If an Officer whose signature is on a Security no longer holds that office at the time the Trustee authenticates the Security, the Security shall be valid nevertheless.

A Security shall not be valid until an authorized signatory of the Trustee manually signs the certificate of authentication on the Security. The signature shall be conclusive evidence that the Security has been authenticated under the Indenture.

On the Issue Date, the Trustee authenticated and delivered $525,023,460 of 8.0% Senior 1145 Notes due 2026 and, at any time and from time to time thereafter, the Trustee shall authenticate and deliver Securities for original issue in an aggregate principal amount specified in such order, in each case upon a written order of the Company signed by two Officers or by an Officer and either an Assistant Treasurer or an Assistant Secretary of the Company. Such order shall specify the amount of the Securities to be authenticated and the date on which the original issue of Securities is to be authenticated and, in the case of an issuance of Additional Securities pursuant to Section 2.13 after the Issue Date, shall certify that such issuance is in compliance with Section 4.03. On the Issue Date, an aggregate of $550,000,000 of 8.0% Senior 1145 Notes due 2026 were authorized for issuance.

The Trustee may appoint an authenticating agent reasonably acceptable to the Company to authenticate the Securities. Unless limited by the terms of such appointment, an authenticating agent may authenticate Securities whenever the Trustee may do so. Each reference in the Indenture to authentication by the Trustee includes authentication by such agent. An authenticating agent has the same rights as any Registrar, Paying Agent or agent for service of notices and demands.

There were no proceeds to the Issuer from the issuance of the New Notes.

The New Notes are unsecured.

The Indenture will be satisfied and discharged and will cease to be of further effect as to all New Notes issued thereunder, when:

If a Default occurs, is continuing and is known to the Trustee, the Trustee shall send to each Securityholder notice of the Default within 90 days after it occurs.

Upon request to the Trustee to take or refrain from taking any action under any provision of the Indenture, the Company will generally furnish to the Trustee an Officers’ Certificate stating that all conditions precedent, if any, provided for in the Indenture and relating to such action have been complied with, and an Opinion of Counsel stating that, in the opinion of such counsel to the Company, all such conditions precedent have been complied with.

9. Other Obligors.

Other than the Applicants, no other person is an obligor with respect to the New Notes.

CONTENTS OF APPLICATION FOR QUALIFICATION

This Application for Qualification comprises:

(a) Pages numbered 1 to 10, consecutively.

(b) The Statement of Eligibility and Qualification on Form T-1 of the trustee under the Indenture to be qualified.

(c) The following exhibits in addition to those filed as part of the Statement of Eligibility and Qualification of the trustee:

SIGNATURES

Pursuant to the requirements of the Trust Indenture Act of 1939, Gulfport Energy Corporation, a corporation organized and existing under the laws of the State of Delaware, has duly caused this Application to be signed on its behalf by the undersigned, thereunto duly authorized, and its seal to be hereunto affixed and attested, all in the city of Houston and State of Texas, on September 3, 2021.

Pursuant to the requirements of the Trust Indenture Act of 1939, Gator Marine Ivanhoe, Inc., a corporation organized and existing under the laws of the State of Delaware, has duly caused this Application to be signed on its behalf by the undersigned, thereunto duly authorized, and its seal to be hereunto affixed and attested, all in the city of Houston and State of Texas, on September 3, 2021.

Pursuant to the requirements of the Trust Indenture Act of 1939, Gator Marine, Inc., a corporation organized and existing under the laws of the State of Delaware, has duly caused this Application to be signed on its behalf by the undersigned, thereunto duly authorized, and its seal to be hereunto affixed and attested, all in the city of Houston and State of Texas, on September 3, 2021.

Pursuant to the requirements of the Trust Indenture Act of 1939, Gulfport Appalachia, LLC, a limited liability company organized and existing under the laws of the State of Delaware, has duly caused this Application to be signed on its behalf by the undersigned, thereunto duly authorized, and its seal to be hereunto affixed and attested, all in the city of Houston and State of Texas, on September 3, 2021.

Pursuant to the requirements of the Trust Indenture Act of 1939, Gulfport Energy Operating Corporation, a corporation organized and existing under the laws of the State of Delaware, has duly caused this Application to be signed on its behalf by the undersigned, thereunto duly authorized, and its seal to be hereunto affixed and attested, all in the city of Houston and State of Texas, on September 3, 2021.

Pursuant to the requirements of the Trust Indenture Act of 1939, Gulfport Midstream Holdings, LLC, a limited liability company organized and existing under the laws of the State of Delaware, has duly caused this Application to be signed on its behalf by the undersigned, thereunto duly authorized, and its seal to be hereunto affixed and attested, all in the city of Houston and State of Texas, on September 3, 2021.

Pursuant to the requirements of the Trust Indenture Act of 1939, Grizzly Holdings, Inc., a corporation organized and existing under the laws of the State of Delaware, has duly caused this Application to be signed on its behalf by the undersigned, thereunto duly authorized, and its seal to be hereunto affixed and attested, all in the city of Houston and State of Texas, on September 3, 2021.

Pursuant to the requirements of the Trust Indenture Act of 1939, Gulfport Midcon, LLC, a limited liability company organized and existing under the laws of the State of Delaware, has duly caused this Application to be signed on its behalf by the undersigned, thereunto duly authorized, and its seal to be hereunto affixed and attested, all in the city of Houston and State of Texas, on September 3, 2021.

Pursuant to the requirements of the Trust Indenture Act of 1939, Jaguar Resources LLC, a limited liability company organized and existing under the laws of the State of Delaware, has duly caused this Application to be signed on its behalf by the undersigned, thereunto duly authorized, and its seal to be hereunto affixed and attested, all in the city of Houston and State of Texas, on September 3, 2021.

Pursuant to the requirements of the Trust Indenture Act of 1939, Mule Sky LLC, a limited liability company organized and existing under the laws of the State of Delaware, has duly caused this Application to be signed on its behalf by the undersigned, thereunto duly authorized, and its seal to be hereunto affixed and attested, all in the city of Houston and State of Texas, on September 3, 2021.

Pursuant to the requirements of the Trust Indenture Act of 1939, Puma Resources, Inc., a corporation organized and existing under the laws of the State of Delaware, has duly caused this Application to be signed on its behalf by the undersigned, thereunto duly authorized, and its seal to be hereunto affixed and attested, all in the city of Houston and State of Texas, on September 3, 2021.

Pursuant to the requirements of the Trust Indenture Act of 1939, Gulfport Energy Corporation., a corporation organized and existing under the laws of the State of Delaware, has duly caused this Application to be signed on its behalf by the undersigned, thereunto duly authorized, and its seal to be hereunto affixed and attested, all in the city of Houston and State of Texas, on September 3, 2021.

Pursuant to the requirements of the Trust Indenture Act of 1939, Westhawk Minerals LLC, a limited liability company organized and existing under the laws of the State of Delaware, has duly caused this Application to be signed on its behalf by the undersigned, thereunto duly authorized, and its seal to be hereunto affixed and attested, all in the city of Houston and State of Texas, on September 3, 2021.

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