Gulfport Energy Operating Corp
Ownership
Ownership Structure
Who owns Gulfport Energy Operating Corp (GPOR)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 82.9% of the shares are freely tradable; institutional investors hold 113.5%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Silver Point Capital LP | 14.74 | 2,607,269 | +0.0 | 06/30/2026 |
| BlackRock Inc | 6.58 | 1,163,741 | +0.5 | 03/31/2026 |
| FMR Inc | 5.18 | 915,534 | -14.6 | 03/31/2026 |
| State Street Corp | 4.33 | 764,817 | +34.8 | 03/31/2026 |
| Vanguard Capital Management, LLC | 3.95 | 699,070 | +0.0 | 03/31/2026 |
| Dimensional Fund Advisors, Inc. | 3.55 | 627,469 | -0.4 | 06/30/2026 |
| Delaware Management Holdings Inc | 3.34 | 589,773 | +20.8 | 03/31/2026 |
| Victory Capital Management Inc. | 3.00 | 530,564 | -1.4 | 06/30/2026 |
| Jennison Associates LLC | 2.98 | 527,245 | -15.1 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 5.02 | 887,286 | +0.0 | 08/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Dell'osso Domenic J Jr | President & CEO | 24,349 | 3,929,929 $ | Aug 7, 2026 | direct |
| Willrath Matthew | VP & CAO | 2,130 | 343,782 $ | Sep 2, 2026 | direct |
| Secrist Bradley Neil | Senior Vice President - Land | 1,900 | 306,660 $ | Aug 7, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 2, 2026 | Willrath Matthew | VP & CAO | Sell | 325 | 182.69 | 59,374 |
| Aug 7, 2026 | Secrist Bradley Neil | Senior Vice President - Land | Other | 132 | 158.45 | 20,915 |
| Aug 7, 2026 | Dell'osso Domenic J Jr | President & CEO | Buy | 1,600 | 160.61 | 256,976 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.