GPOR

SEC source: 0001209191-18-014679 · doc4.xml · nonDerivative · entry 1

Westerman Paul D · CIK 0001721028 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,488

F1 · price: This transaction was executed in multiple trades at prices ranging from $10.1355 per share to $10.1469 per share, inclusive. The price reported above reflects the weighted average price. The reporting person undertakes to provide Gulfport Energy Corporation, any security holder of Gulfport Energy Corporation or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.

SEC source: 0001209191-18-015225 · doc4.xml · nonDerivative · entry 1

Streller Scott E · CIK 0001372929 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 39,032

F1 · price: This transaction was executed in multiple trades at prices ranging from $10.145 per share to $10.1469 per share, inclusive. The price reported above reflects the weighted average price. The reporting person undertakes to provide Gulfport Energy Corporation, any security holder of Gulfport Energy Corporation or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.

SEC source: 0001209191-18-012114 · doc4.xml · nonDerivative · entry 1

Moore Donnie G · CIK 0001727812 · COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 137,143

F1 · shares: These securities are restricted stock units each representing a contingent right to receive one share of common stock, par value $0.01 per share, of Gulfport Energy Corporation (the "Issuer") that were granted under the issuer's equity incentive plan. The 137,143 restricted stock units reported on this form will vest in three approximately equal annual installments beginning on February 27, 2019.

SEC source: 0001209191-17-066528 · doc4.xml · nonDerivative · entry 1

Zitkus Lester · CIK 0001699266 · SVP, Land

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 43,518

F1 · shares: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person.

F2 · shares: These shares represent vested restricted stock units previously granted to the reporting person under the Issuer's equity incentive plan and were sold to satisfy tax obligations.

F3 · price: This transaction was executed in multiple trades at prices ranging from $12.01 per share to $12.38 per share, inclusive. The price reported above reflects the weighted average sale price. The reporting person undertakes to provide Gulfport Energy Corporation, any security holder of Gulfport Energy Corporation or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001209191-17-066527 · doc4.xml · nonDerivative · entry 1

Moore Michael G · CIK 0001325646 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 295,449

F1 · shares: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person.

F2 · shares: These shares represent vested restricted stock units previously granted to the reporting person under the Issuer's equity incentive plan and were sold to satisfy tax obligations.

F3 · price: This transaction was executed in multiple trades at prices ranging from $12.01 per share to $12.38 per share, inclusive. The price reported above reflects the weighted average sale price. The reporting person undertakes to provide Gulfport Energy Corporation, any security holder of Gulfport Energy Corporation or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001209191-17-066526 · doc4.xml · nonDerivative · entry 1

Malone Mark · CIK 0001699301 · SVP, Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,747

F1 · shares: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person.

F2 · shares: These shares represent vested restricted stock units previously granted to the reporting person under the Issuer's equity incentive plan and were sold to satisfy tax obligations.

F3 · price: This transaction was executed in multiple trades at prices ranging from $12.01 per share to $12.37 per share, inclusive. The price reported above reflects the weighted average sale price. The reporting person undertakes to provide Gulfport Energy Corporation, any security holder of Gulfport Energy Corporation or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001209191-17-066525 · doc4.xml · nonDerivative · entry 1

Maier Stuart · CIK 0001583383 · SVP, Geosciences

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,366

F1 · shares: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person.

F2 · shares: These shares represent vested restricted stock units previously granted to the reporting person under the Issuer's equity incentive plan and were sold to satisfy tax obligations.

F3 · price: This transaction was executed in multiple trades at prices ranging from $12.01 per share to $12.42 per share, inclusive. The price reported above reflects the weighted average sale price. The reporting person undertakes to provide Gulfport Energy Corporation, any security holder of Gulfport Energy Corporation or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001209191-17-066524 · doc4.xml · nonDerivative · entry 2

Jones Robert Alan · CIK 0001699656 · SVP, Drilling

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 43,827

F2 · shares: These shares represent vested restricted stock units previously granted to the reporting person under the Issuer's equity incentive plan and were sold to satisfy tax obligations.

SEC source: 0001209191-17-066524 · doc4.xml · nonDerivative · entry 1

Jones Robert Alan · CIK 0001699656 · SVP, Drilling

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 44,827

F1 · shares: The sale was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person.

F2 · shares: These shares represent vested restricted stock units previously granted to the reporting person under the Issuer's equity incentive plan and were sold to satisfy tax obligations.

F3 · price: This transaction was executed in multiple trades at prices ranging from $12.02 per share to $12.37 per share, inclusive. The price reported above reflects the weighted average sale price. The reporting person undertakes to provide Gulfport Energy Corporation, any security holder of Gulfport Energy Corporation or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001209191-17-066523 · doc4.xml · nonDerivative · entry 1

Groeschel Craig · CIK 0001527729 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,389

F1 · shares: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person.

F2 · shares: These shares represent vested restricted stock units previously granted to the reporting person under the Issuer's equity incentive plan.

F3 · price: This transaction was executed in multiple trades at prices ranging from $12.01 per share to $12.38 per share, inclusive. The price reported above reflects the weighted average sale price. The reporting person undertakes to provide Gulfport Energy Corporation, any security holder of Gulfport Energy Corporation or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001209191-17-066522 · doc4.xml · nonDerivative · entry 1

Crowell Keri · CIK 0001652430 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 81,092

F1 · shares: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person.

F2 · shares: These shares represent vested restricted stock units previously granted to the reporting person under the Issuer's equity incentive plan and were sold to satisfy tax obligations.

F3 · price: This transaction was executed in multiple trades at prices ranging from $12.01 per share to $12.37 per share, inclusive. The price reported above reflects the weighted average sale price. The reporting person undertakes to provide Gulfport Energy Corporation, any security holder of Gulfport Energy Corporation or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001209191-17-066520 · doc4.xml · nonDerivative · entry 1

Baldwin Steve · CIK 0001583381 · VP of Reservoir Engineering

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 32,634

F1 · shares: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person.

F2 · shares: These shares represent vested restricted stock units previously granted to the reporting person under the Issuer's equity incentive plan and were sold to satisfy tax obligations.

F3 · price: This transaction was executed in multiple trades at prices ranging from $12.02 per share to $12.38 per share, inclusive. The price reported above reflects the weighted average sale price. The reporting person undertakes to provide Gulfport Energy Corporation, any security holder of Gulfport Energy Corporation or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001209191-17-063531 · doc4.xml · nonDerivative · entry 1

Westerman Paul D · CIK 0001721028 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,488

F1 · price: This transaction was executed in multiple trades at prices ranging from $12.741 per share to $12.756 per share, inclusive. The price reported above reflects the weighted average price. The reporting person undertakes to provide Gulfport Energy Corporation, any security holder of Gulfport Energy Corporation or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.

SEC source: 0001209191-17-059501 · doc4.xml · nonDerivative · entry 1

Westerman Paul D · CIK 0001721028 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,488

F1 · shares: Each restricted stock unit represents a contingent right to receive one share of common stock, par value $0.01 per share, of Gulfport Energy Corporation (the "Issuer") and was granted under the Issuer's equity incentive plan. The 5,488 restricted stock units reported on this form will vest in one installment on the earlier of June 8, 2018 and the date of the 2018 Annual Meeting of Stockholders of the Issuer, in each case, if the non-employee director is in continuous service on such date.

SEC source: 0001209191-17-038966 · doc4.xml · nonDerivative · entry 1

Houston David L · CIK 0001335995 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 53,066

F1 · shares: Each restricted stock unit represents a contingent right to receive one share of common stock, par value $0.01 per share, of Gulfport Energy Corporation (the "Issuer") and was granted under the Issuer's equity incentive plan. The 9,608 restricted stock units reported on this form will vest in one installment on the earlier of the one-year anniversary of the grant date and the date of the 2018 Annual Meeting of Stockholders of the Issuer, in each case, if the non-employee director is in continuous service on such date.

SEC source: 0001209191-17-038971 · doc4.xml · nonDerivative · entry 1

Streller Scott E · CIK 0001372929 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 37,032

F1 · shares: Each restricted stock unit represents a contingent right to receive one share of common stock, par value $0.01 per share, of Gulfport Energy Corporation (the "Issuer") and was granted under the Issuer's equity incentive plan. The 9,608 restricted stock units reported on this form will vest in one installment on the earlier of the one-year anniversary of the grant date and the date of the 2018 Annual Meeting of Stockholders of the Issuer, in each case, if the non-employee director is in continuous service on such date.

SEC source: 0001209191-17-038970 · doc4.xml · nonDerivative · entry 1

MORRIS BEN T · CIK 0001214494 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,192

F1 · shares: Each restricted stock unit represents a contingent right to receive one share of common stock, par value $0.01 per share, of Gulfport Energy Corporation (the "Issuer") and was granted under the Issuer's equity incentive plan. The 9,608 restricted stock units reported on this form will vest in one installment on the earlier of the one-year anniversary of the grant date and the date of the 2018 Annual Meeting of Stockholders of the Issuer, in each case, if the non-employee director is in continuous service on such date.

SEC source: 0001209191-17-038968 · doc4.xml · nonDerivative · entry 1

Johnson Charles Douglas · CIK 0001547330 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,383

F1 · shares: Each restricted stock unit represents a contingent right to receive one share of common stock, par value $0.01 per share, of Gulfport Energy Corporation (the "Issuer") and was granted under the Issuer's equity incentive plan. The 9,608 restricted stock units reported on this form will vest in one installment on the earlier of the one-year anniversary of the grant date and the date of the 2018 Annual Meeting of Stockholders of the Issuer, in each case, if the non-employee director is in continuous service on such date.

SEC source: 0001209191-17-038967 · doc4.xml · nonDerivative · entry 1

Groeschel Craig · CIK 0001527729 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,448

F1 · shares: Each restricted stock unit represents a contingent right to receive one share of common stock, par value $0.01 per share, of Gulfport Energy Corporation (the "Issuer") and was granted under the Issuer's equity incentive plan. The 9,608 restricted stock units reported on this form will vest in one installment on the earlier of the one-year anniversary of the grant date and the date of the 2018 Annual Meeting of Stockholders of the Issuer, in each case, if the non-employee director is in continuous service on such date.

SEC source: 0000899243-17-014181 · doc4.xml · nonDerivative · entry 1

Vitruvian II Woodford, LLC · CIK 0001698634 · 10% owner

VANLOH S WIL JR · CIK 0001098463 · 10% owner

Vitruvian Exploration II Holdings, LLC · CIK 0001698741 · 10% owner

Vitruvian Exploration II, LLC · CIK 0001698924 · 10% owner

Q-VEX II, LP · CIK 0001698737 · 10% owner

QEM V LLC · CIK 0001697117 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,133,872

F1 · kind: On May 19, 2017, pursuant to (i) the Agency and Redemption Agreement, dated as of May 18, 2017 (the "Agency Agreement"), by and among Vitruvian II Woodford, LLC, a Delaware limited liability company ( "Vitruvian"), and LG WF L.P., a Delaware limited partnership and a member of Vitruvian ("LG"), and (ii) the limited liability company agreement of Vitruvian, as amended (the "LLC Agreement"), 4,465,380 shares of common stock, par value $0.01 (the "Common Stock"), of Gulfport Energy Corporation, a Delaware corporation (the "Issuer"), were distributed to LG in redemption of certain of LG's capital interests in Vitruvian. In addition, as partial consideration for such redemption and pursuant to the Agency Agreement, LG became entitled to receive up to 1,252,865 shares of Common Stock held in a separate escrow account pursuant to the terms and conditions of the Purchase and Sale Agreement by and among the Issuer, Vitruvian and a subsidiary of the Issuer (the "Purchase Agreement"),

F2 · kind: (Continued from Footnote 1) as such shares of Common Stock are released from the escrow account pursuant to the Purchase Agreement. Following these transactions, Vitruvian may be deemed to be the beneficial owner of 18,133,872 shares of Common Stock (the "Vitruvian Shares").

F3 · kind: Vitruvian is managed by its board of directors (the "Board"). QEM V, LLC ("QEM") is the sole general partner of Q-VEX II, LP ("Q-VEX"), which has the right to appoint a majority of the board of directors of Vitruvian Exploration II, LLC ("VEX"), which has the right to appoint a majority of the board of directors of Vitruvian Exploration II Holdings, LLC ("VEX Holdings"), which holds a majority of the capital interests of Vitruvian and has the right to appoint a majority of the Board (such directors, the "VEX Holdings Directors"). Certain actions of Vitruvian, including certain dispositions, require the approval of the VEX Holdings Directors. QEM, Q-VEX, VEX and VEX Holdings each disclaim beneficial ownership of the Vitruvian Shares in excess of their respective pecuniary interest in the securities.

F4 · kind: Any decision taken by QEM to vote, or to direct to vote, and to dispose, or to direct the disposition of, the Vitruvian Shares has to be approved by a majority of the members of the investment committee of QEM, which majority must include S. Wil VanLoh, Jr. Therefore, Mr. VanLoh may be deemed to share voting and dispositive power over the Vitruvian Shares and may also be deemed to be the beneficial owner of such securities. Mr. VanLoh disclaims beneficial ownership of such securities in excess of his pecuniary interest in the securities.

F1 · price: On May 19, 2017, pursuant to (i) the Agency and Redemption Agreement, dated as of May 18, 2017 (the "Agency Agreement"), by and among Vitruvian II Woodford, LLC, a Delaware limited liability company ( "Vitruvian"), and LG WF L.P., a Delaware limited partnership and a member of Vitruvian ("LG"), and (ii) the limited liability company agreement of Vitruvian, as amended (the "LLC Agreement"), 4,465,380 shares of common stock, par value $0.01 (the "Common Stock"), of Gulfport Energy Corporation, a Delaware corporation (the "Issuer"), were distributed to LG in redemption of certain of LG's capital interests in Vitruvian. In addition, as partial consideration for such redemption and pursuant to the Agency Agreement, LG became entitled to receive up to 1,252,865 shares of Common Stock held in a separate escrow account pursuant to the terms and conditions of the Purchase and Sale Agreement by and among the Issuer, Vitruvian and a subsidiary of the Issuer (the "Purchase Agreement"),

F2 · price: (Continued from Footnote 1) as such shares of Common Stock are released from the escrow account pursuant to the Purchase Agreement. Following these transactions, Vitruvian may be deemed to be the beneficial owner of 18,133,872 shares of Common Stock (the "Vitruvian Shares").

F3 · price: Vitruvian is managed by its board of directors (the "Board"). QEM V, LLC ("QEM") is the sole general partner of Q-VEX II, LP ("Q-VEX"), which has the right to appoint a majority of the board of directors of Vitruvian Exploration II, LLC ("VEX"), which has the right to appoint a majority of the board of directors of Vitruvian Exploration II Holdings, LLC ("VEX Holdings"), which holds a majority of the capital interests of Vitruvian and has the right to appoint a majority of the Board (such directors, the "VEX Holdings Directors"). Certain actions of Vitruvian, including certain dispositions, require the approval of the VEX Holdings Directors. QEM, Q-VEX, VEX and VEX Holdings each disclaim beneficial ownership of the Vitruvian Shares in excess of their respective pecuniary interest in the securities.

F4 · price: Any decision taken by QEM to vote, or to direct to vote, and to dispose, or to direct the disposition of, the Vitruvian Shares has to be approved by a majority of the members of the investment committee of QEM, which majority must include S. Wil VanLoh, Jr. Therefore, Mr. VanLoh may be deemed to share voting and dispositive power over the Vitruvian Shares and may also be deemed to be the beneficial owner of such securities. Mr. VanLoh disclaims beneficial ownership of such securities in excess of his pecuniary interest in the securities.

F1 · balance_after: On May 19, 2017, pursuant to (i) the Agency and Redemption Agreement, dated as of May 18, 2017 (the "Agency Agreement"), by and among Vitruvian II Woodford, LLC, a Delaware limited liability company ( "Vitruvian"), and LG WF L.P., a Delaware limited partnership and a member of Vitruvian ("LG"), and (ii) the limited liability company agreement of Vitruvian, as amended (the "LLC Agreement"), 4,465,380 shares of common stock, par value $0.01 (the "Common Stock"), of Gulfport Energy Corporation, a Delaware corporation (the "Issuer"), were distributed to LG in redemption of certain of LG's capital interests in Vitruvian. In addition, as partial consideration for such redemption and pursuant to the Agency Agreement, LG became entitled to receive up to 1,252,865 shares of Common Stock held in a separate escrow account pursuant to the terms and conditions of the Purchase and Sale Agreement by and among the Issuer, Vitruvian and a subsidiary of the Issuer (the "Purchase Agreement"),

F2 · balance_after: (Continued from Footnote 1) as such shares of Common Stock are released from the escrow account pursuant to the Purchase Agreement. Following these transactions, Vitruvian may be deemed to be the beneficial owner of 18,133,872 shares of Common Stock (the "Vitruvian Shares").

F3 · balance_after: Vitruvian is managed by its board of directors (the "Board"). QEM V, LLC ("QEM") is the sole general partner of Q-VEX II, LP ("Q-VEX"), which has the right to appoint a majority of the board of directors of Vitruvian Exploration II, LLC ("VEX"), which has the right to appoint a majority of the board of directors of Vitruvian Exploration II Holdings, LLC ("VEX Holdings"), which holds a majority of the capital interests of Vitruvian and has the right to appoint a majority of the Board (such directors, the "VEX Holdings Directors"). Certain actions of Vitruvian, including certain dispositions, require the approval of the VEX Holdings Directors. QEM, Q-VEX, VEX and VEX Holdings each disclaim beneficial ownership of the Vitruvian Shares in excess of their respective pecuniary interest in the securities.

F4 · balance_after: Any decision taken by QEM to vote, or to direct to vote, and to dispose, or to direct the disposition of, the Vitruvian Shares has to be approved by a majority of the members of the investment committee of QEM, which majority must include S. Wil VanLoh, Jr. Therefore, Mr. VanLoh may be deemed to share voting and dispositive power over the Vitruvian Shares and may also be deemed to be the beneficial owner of such securities. Mr. VanLoh disclaims beneficial ownership of such securities in excess of his pecuniary interest in the securities.

SEC source: 0001209191-17-016220 · doc4.xml · nonDerivative · entry 1

Maier Stuart · CIK 0001583383 · Vice President of Geosciences

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 52,366

F1 · shares: These securities are restricted stock units, each representing a contingent right to receive one share of common stock, par value $0.01 per share, of Gulfport Energy Corporation (the "Issuer") granted under the Issuer's equity incentive plan. The 32,000 restricted stock units reported on this form will vest in three approximately equal annual installments beginning on August 27, 2017.

SEC source: 0001209191-17-016217 · doc4.xml · nonDerivative · entry 1

Moore Michael G · CIK 0001325646 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 413,943

F1 · shares: These securities are restricted stock units, each representing a contingent right to receive one share of common stock, par value $0.01 per share, of Gulfport Energy Corporation (the "Issuer") granted under the Issuer's equity incentive plan. 62,589 of these restricted stock units vested on February 27, 2017, and the remaining 125,179 restricted stock units will vest in two approximately equal annual installments beginning on February 27, 2018.

SEC source: 0001209191-17-016219 · doc4.xml · nonDerivative · entry 1

Crowell Keri · CIK 0001652430 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 97,092

F1 · shares: These securities are restricted stock units, each representing a contingent right to receive one share of common stock, par value $0.01 per share, of Gulfport Energy Corporation (the "Issuer") granted under the Issuer's equity incentive plan. The 55,000 restricted stock units reported on this form will vest in three approximately equal annual installments beginning on August 27, 2017.

SEC source: 0001209191-17-016216 · doc4.xml · nonDerivative · entry 1

Baldwin Steve · CIK 0001583381 · VP of Reservoir Engineering

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 36,634

F1 · shares: These securities are restricted stock units, each representing a contingent right to receive one share of common stock, par value $0.01 per share, of Gulfport Energy Corporation (the "Issuer") granted under the Issuer's equity incentive plan. The 15,000 restricted stock units reported on this form will vest in three equal annual installments beginning on August 27, 2017.