Michael Sluiter - 01 Mar 2026 Form 4 Insider Report for GULFPORT ENERGY CORP (GPOR)

Reporting relationship: SVP of Reservoir Engineering
Issuer ticker: GPOR
Reported as of: 01 Mar 2026
Net transaction value: -$2,447,749
SEC form: 4
Accepted by SEC: 03 Mar 2026, 18:59:00 UTC
Prior SEC filing: 06 Jan 2026
Next SEC filing: 06 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Patrick Craine, Attorney-in-Fact

Key filing fact

Michael Sluiter filed Form 4 for GULFPORT ENERGY CORP (GPOR) on 03 Mar 2026.

Key facts

This page summarizes Michael Sluiter's Form 4 filing for GULFPORT ENERGY CORP (GPOR).
4 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 03 Mar 2026, 18:59.

Change

Previous filing in this sequence was filed on 06 Jan 2026.
Current net transaction value: -$2,447,749.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001761731 Primary reporting owner

SLUITER MICHAEL

Relationship: SVP of Reservoir Engineering
Address: 713 MARKET DRIVE, OKLAHOMA CITY
Signature: /s/ Patrick Craine, Attorney-in-Fact
Signature date: 03 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

GPOR transaction

Common Stock

Award

Transaction value: $0
Shares: +2,397
Change %: +12%
Price: $0.000000
Shares after: 22,751
Date: 01 Mar 2026
Ownership: Direct
Footnotes: F1

GPOR transaction

Common Stock

Tax liability

Transaction value: $174,857
Shares: -838
Change %: -3.7%
Price: $208.66
Shares after: 21,913
Date: 01 Mar 2026
Ownership: Direct
Footnotes: F2

GPOR transaction

Common Stock

Sale

Transaction value: $2,085,930
Shares: -9,933
Change %: -45%
Price: $210.00
Shares after: 11,980
Date: 02 Mar 2026
Ownership: Direct

GPOR transaction

Common Stock

Tax liability

Transaction value: $186,962
Shares: -894
Change %: -7.5%
Price: $209.13
Shares after: 11,086
Date: 03 Mar 2026
Ownership: Direct
Footnotes: F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Amount represents the number of shares of restricted stock granted under the 2021 Stock Incentive Plan. The shares will vest in three approximately equal annual installments beginning on March 1, 2027.

Footnote F2

These shares represent vested restricted stock units previously granted to the reporting person under the Issuer's equity incentive plan and were withheld by Gulfport Energy Corporation to satisfy tax withholding obligations due upon settlement of such restricted stock units.