MICHAEL SLUITER - 02 Jan 2026 Form 4 Insider Report for GULFPORT ENERGY CORP (GPOR)

Role: SVP of Reservoir Engineering
Signature: /s/ Patrick Craine, Attorney-in-Fact
Issuer symbol: GPOR
Transactions as of: 02 Jan 2026
Net transactions value: -$1,646,033
Form type: 4
Filing time: 06 Jan 2026, 17:51:26 UTC
Previous filing: 14 May 2025
Next filing: 03 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
SLUITER MICHAEL	SVP of Reservoir Engineering	713 MARKET DRIVE, OKLAHOMA CITY	/s/ Patrick Craine, Attorney-in-Fact	06 Jan 2026	0001761731

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	GPOR	Common Stock	Award	$0	+17,847	+171%	$0.000000	28,268	02 Jan 2026	Direct	F1
transaction	GPOR	Common Stock	Tax liability	$1,646,033	-7,914	-28%	$207.99	20,354	02 Jan 2026	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	These securities are performance-based restricted stock units for the performance period from January 1, 2023, to December 31, 2025, that were granted under the issuer's equity incentive plan on March 3, 2023. All these performance-based restricted stock units vested as of January 2, 2026, upon certification by the issuer's compensation committee of the applicable performance conditions on January 2, 2026.
F2	The issuer withheld shares of common stock that would have otherwise been issuable to the reporting person to satisfy the issuer's tax withholding obligations in connection with the vesting and settlement of the performance-based restricted stock units granted on March 3, 2023, and vested upon certification by the issuer's compensation committee on January 2, 2026. The number of shares of common stock withheld was determined based on the closing price per share of the issuer's common stock on December 31, 2025.

Content

These securities are performance-based restricted stock units for the performance period from January 1, 2023, to December 31, 2025, that were granted under the issuer's equity incentive plan on March 3, 2023. All these performance-based restricted stock units vested as of January 2, 2026, upon certification by the issuer's compensation committee of the applicable performance conditions on January 2, 2026.

The issuer withheld shares of common stock that would have otherwise been issuable to the reporting person to satisfy the issuer's tax withholding obligations in connection with the vesting and settlement of the performance-based restricted stock units granted on March 3, 2023, and vested upon certification by the issuer's compensation committee on January 2, 2026. The number of shares of common stock withheld was determined based on the closing price per share of the issuer's common stock on December 31, 2025.