As of November 6, 2026, one holder's latest Schedule 13D or 13G filing report owning 5% or more of Summit Midstream Corp. The largest reported stake is Connect Midstream, LLC's, at 39.1%. 7 filings are on record since July 17, 2025 (Schedule 13D/A, April 9, 2026).
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Key facts
- · Holder: BlackRock, Inc. · Percent: 4.9% · SCHEDULE 13G/A
- · Holder: Connect Midstream, LLC · Percent: 39.1% · SCHEDULE 13D/A
- · Holder: The Vanguard Group · Percent: 0% · SCHEDULE 13G/A
- · Holder: He Zhengxu · SCHEDULE 13G/A
- · Holder: Connect Midstream, LLC · Percent: 35.5% · SCHEDULE 13D/A
Summit Midstream Corp has 7 Schedule 13D or 13G filings on record since 2025-07-17. 1 holder's latest filing reports 5% or more of common stock. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Connect Midstream, LLC | 39.1% | 7,891,864 | SCHEDULE 13D/A, 2026-04-09 | 2026-03-31 |
| BlackRock, Inc. | 4.9% | 612,798 | SCHEDULE 13G/A, 2026-04-27 | 2026-03-31 |
| SCHEDULE 13G/A, 2026-01-06 | 2025-12-31 | |||
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-27 | 2026-03-13 |
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More on Summit Midstream Corp and the records around it.
Summit Midstream Corp elsewhere on the record
Companies that share a holder
- He Zhengxu also filed stake reports on 5 other companies: COMMUNITY HEALTH SYSTEMS INC (May 2026), Phunware, Inc. (Apr 2026), RLJ Lodging Trust (Jan 2026)
- BlackRock, Inc. also filed stake reports on 1596 other companies: AvePoint, Inc. (Nov 2026), BIOMARIN PHARMACEUTICAL INC (Nov 2026), MSG RANGERS CORP (Nov 2026)
- The Vanguard Group also filed stake reports on 2384 other companies: BellRing Brands, Inc. (Sep 2026), CAL-MAINE FOODS INC (Sep 2026), FTAI Aviation Ltd. (Sep 2026)
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Purpose of Transaction (Item 4)
Connect Midstream, LLC
Item 4 of the Schedule 13D is hereby amended to include the following at the end thereof: Securities Purchase Agreement Pursuant to the Securities Purchase Agreement (the "Purchase Agreement"), by and among the Company, the Partnership, and Tall Oak Parent, and solely for purposes of modifying certain existing registration rights as detailed in the Purchase Agreement, Connect Midstream, LLC, a Delaware limited liability company ("Connect Midstream"), the Company agreed to issue and sell to Tall Oak Parent (or its designated members) 1,351,351 shares (the "Shares") of Common Stock in exchange for $42,000,000 in cash. The Purchase Agreement contained customary representations, warranties, covenants, conditions to closing, and termination provisions. Upon consummation of the foregoing, the reported securities were distributed by Tall Oak Parent to Connect Midstream. The foregoing description of the Purchase Agreement does not purport to be complete and is qualified in its entirety by the full text of the Purchase Agreement, a copy of which is filed as Exhibit 10.1 to the Issuer's current report on Form 8-K filed with the SEC on April 2, 2026, and is incorporated herein by reference. Investor Agreement Amendment The Purchase Agreement amends and modifies the Investor Agreement such that, among other things, the Shares issued to Tall Oak Parent constitute "Registerable Securities" under the Investor Agreement, and, pursuant to the terms of the Purchase Agreement and the …The first part of Item 4 of the SCHEDULE 13D/A filed 2026-04-09; the filing has the rest
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-17 | BlackRock, Inc. | 5% | SCHEDULE 13G |
| 2025-08-28 | Connect Midstream, LLC | 35.4% | SCHEDULE 13D/A |
| 2025-09-02 | Connect Midstream, LLC | 35.5% | SCHEDULE 13D/A |
| 2026-01-06 | He Zhengxu | SCHEDULE 13G/A | |
| 2026-03-27 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-04-09 | Connect Midstream, LLC | 39.1% | SCHEDULE 13D/A |
| 2026-04-27 | BlackRock, Inc. | 4.9% | SCHEDULE 13G/A |
Questions about who owns Summit Midstream Corp
Who owns Summit Midstream Corp?
On this page, one holder's latest ownership filing reports 5% or more of Summit Midstream Corp: Connect Midstream, LLC (39.1%, Schedule 13D/A, filed 2026-04-09).
When did Connect Midstream, LLC buy into Summit Midstream Corp?
The filings give report dates, not purchase dates. The earliest filing from Connect Midstream, LLC on this page is the Schedule 13D/A, filed 2025-08-28, reporting 35.4%; its latest, Schedule 13D/A filed 2026-04-09, reports 39.1%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 7 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.