Magnolia Oil & Gas Corp
MGY- Exchange
- NYSE
- Industry
- Crude Petroleum & Natural Gas
- SEC CIK
- 0001698990
In the last 90 days, Magnolia Oil & Gas Corp insiders filed 3 open-market purchases and 0 sales; 411 institutions reported holding it in 13F filings for Q2 2026, worth $5.28B in total; no superinvestor holds it.
Holders of 5% or more of MGY
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Magnolia Oil & Gas Corp, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 14.40%27.2M shares | – | Oct 18, 20243 filings | Apr 30, 2025 | SEC |
| WildFire Energy I LLC | 13G | 11.96%32.2M shares | New | Sep 16, 20261 filing | Sep 16, 2026 | SEC |
| Vanguard Portfolio Management LLC | 13G/A | 8.39%15.5M shares | +1.35 ppfrom 7.04% | Apr 29, 20262 filings | Jul 31, 2026 | SEC |
| State Street Corp | 13G | 5.10%9.50M shares | +0.40 ppfrom 4.70% | Oct 16, 20243 filings | May 12, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
48 Schedule 13D and 13G filings on Magnolia Oil & Gas Corp, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Sep 16, 20264:30 PM ET | WildFire Energy I LLCand 4 others | 13G | 11.96%32.2M shares | New | Sep 10, 2026 | SEC |
| Jul 31, 202611:23 AM ET | Vanguard Portfolio Management LLC | 13G/A | 8.39%15.5M shares | +1.35 ppfrom 7.04% | Jun 30, 2026 | SEC |
| May 12, 202611:28 AM ET | State Street Corp | 13G | 5.10%9.50M shares | +0.40 ppfrom 4.70% | Mar 31, 2026 | SEC |
| Apr 29, 20262:16 PM ET | Vanguard Portfolio Management LLC | 13G | 7.04%13.1M shares | New | Mar 31, 2026 | SEC |
| Mar 27, 202610:32 AM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Nov 10, 20258:39 AM ET | State Street Corp | 13G | 4.70%8.68M shares | –Below 5% | Sep 30, 2025 | SEC |
| Apr 30, 20258:55 AM ET | BlackRock, Inc. | 13G/A | 14.40%27.2M shares | – | Mar 31, 2025 | SEC |
| Apr 7, 202510:04 AM ET | First Trust Portfolios LPand 2 others | 13G/A | 1.81%3.41M shares | −8.20 ppfrom 10.01%Below 5% | Mar 31, 2025 | SEC |
| Mar 7, 202510:03 AM ET | First Trust Portfolios LPand 2 others | 13G/A | 10.01%18.9M shares | – | Feb 28, 2025 | SEC |
| Nov 14, 2024 | T. Rowe Price Investment Management, Inc. | 13G/AOld format | – | – | – | SEC |
| Nov 8, 2024 | BlackRock, Inc. | 13G/AOld format | – | – | – | SEC |
| Nov 8, 2024 | American Century Investment Management Inc | 13GOld format | – | New | – | SEC |
| Oct 18, 2024 | BlackRock, Inc. | 13G/AOld format | – | – | – | SEC |
| Oct 16, 2024 | State Street Corp | 13GOld format | – | New | – | SEC |
| Sep 25, 2024 | EnerVest, Ltd. | 13D/AOld format | – | – | – | SEC |
| May 15, 2024 | EnerVest, Ltd. | 13D/AOld format | – | – | – | SEC |
| Apr 10, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Apr 5, 202412:21 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 14, 20243:06 PM ET | Alliancebernstein L.P. | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2024 | T. Rowe Price Investment Management, Inc. | 13GOld format | – | – | – | SEC |
| Feb 13, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Jan 10, 2024 | First Trust Portfolios LP | 13GOld format | – | New | – | SEC |
| Jan 8, 20244:35 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2023 | T. Rowe Price Investment Management, Inc. | 13GOld format | – | New | – | SEC |
| Feb 13, 20236:40 PM ET | Alliancebernstein L.P. | 13GOld format | – | New | – | SEC |
| Feb 9, 2023 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2023 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Jan 31, 20235:52 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Nov 8, 2022 | EnerVest, Ltd. | 13D/AOld format | – | – | – | SEC |
| Aug 10, 2022 | Price T Rowe Associates Inc | 13G/AOld format | – | – | – | SEC |
| Jun 6, 2022 | EnerVest, Ltd. | 13D/AOld format | – | – | – | SEC |
| Mar 15, 2022 | EnerVest, Ltd. | 13D/AOld format | – | – | – | SEC |
| Feb 14, 2022 | Price T Rowe Associates Inc | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2022 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2022 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Feb 8, 2022 | EnerVest, Ltd. | 13D/AOld format | – | – | – | SEC |
| Feb 4, 2022 | Wellington Management Group LLP | 13G/AOld format | – | – | – | SEC |
| Feb 3, 20224:41 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Oct 13, 2021 | EnerVest, Ltd. | 13D/AOld format | – | – | – | SEC |
| Oct 1, 2021 | EnerVest, Ltd. | 13D/AOld format | – | – | – | SEC |
| Jun 21, 2021 | EnerVest, Ltd. | 13D/AOld format | – | – | – | SEC |
| Mar 10, 2021 | EnerVest, Ltd. | 13D/AOld format | – | – | – | SEC |
| Feb 16, 2021 | Price T Rowe Associates Inc | 13G/AOld format | – | – | – | SEC |
| Feb 12, 2021 | Davis Selected Advisers | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2021 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 8, 2021 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Feb 4, 2021 | Wellington Management Group LLP | 13G/AOld format | – | – | – | SEC |
| Feb 2, 20212:56 PM ET | BlackRock Inc. | 13GOld format | – | New | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Magnolia Oil & Gas Corp shares.
No Form 144 notices for Magnolia Oil & Gas Corp are on file.