# EDGAR Filing Document

**Accession Number:** 0002024218
**File Stem:** 0002024218-26-000070
**Filing Date:** 2026-5
**Character Count:** 42327
**Document Hash:** 7eeade6aee8d27612aad23c6c0cc7f38
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0002024218-26-000070.hdr.sgml**: 20260511

**ACCESSION NUMBER**: 0002024218-26-000070

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 13

**CONFORMED PERIOD OF REPORT**: 20260511

**ITEM INFORMATION**: Results of Operations and Financial Condition

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20260511

**DATE AS OF CHANGE**: 20260511

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Summit Midstream Corp
- **CENTRAL INDEX KEY:** 0002024218
- **STANDARD INDUSTRIAL CLASSIFICATION:** NATURAL GAS TRANSMISSION [4922]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42201
- **FILM NUMBER:** 26963551

**BUSINESS ADDRESS:**
- **STREET 1:** 910 LOUISIANA STREET, SUITE 4200
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77002
- **BUSINESS PHONE:** 832-413-4770

**MAIL ADDRESS:**
- **STREET 1:** 910 LOUISIANA STREET, SUITE 4200
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77002

?xml version='1.0' encoding='ASCII'? smc-20260511

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 8-K**

**CURRENT REPORT**

**Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934**

Date of Report (Date of earliest event reported): **May 11, 2026**

**Summit Midstream Corporation**

(Exact name of registrant as specified in its charter)

---

| | | |
|:---|:---|:---|
| **Delaware** | **001-42201** | **99-3056990** |
| (State or other jurisdiction | (Commission | (IRS Employer |
| of incorporation) | File Number) | Identification No.) |

---

**910 Louisiana Street, Suite 4200**

**Houston, TX 77002**

(Address of principal executive office) (Zip Code)

(Registrants' telephone number, including area code): **(832) 413-4770**

**Not applicable**

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

□ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

□ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

□ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

□ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Securities Act:

Title of each class Trading Symbol(s) Name of each exchange on which registered <br> <u>Common Stock</u> <u>SMC</u> <u>New York Stock Exchange</u>

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

 Emerging growth company □

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. □

------

**Item 2.02 Results of Operations and Financial Condition.**

On May 11, 2026, Summit Midstream Corporation (NYSE: SMC), a Delaware corporation issued a press release announcing its results of operations for the three months ended March 31, 2026. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

The information furnished in this Item 2.02 shall not be deemed "filed" for purposes of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and shall not be deemed incorporated by reference in any filing with the Securities and Exchange Commission, whether or not filed under the Securities Act of 1933, as amended, or the Exchange Act, regardless of any general incorporation language in such document.

**Item 9.01 Financial Statements and Exhibits.**

(d) <u>Exhibits</u>

---

| | |
|:---|:---|
| **Exhibit Number** | **Description** |
| <u>[99.1](smc1q2026earningsrelease.htm)</u> | <u>[Press Release, dated](smc1q2026earningsrelease.htm)[May](smc1q2026earningsrelease.htm)[1](smc1q2026earningsrelease.htm)[1](smc1q2026earningsrelease.htm)[, 202](smc1q2026earningsrelease.htm)[6](smc1q2026earningsrelease.htm)[.](smc1q2026earningsrelease.htm)</u> |
| 104 | Cover Page Interactive Data File – the cover page XBRL tags are embedded within the Inline XBRL document |

---

------

**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

---

| | | |
|:---|:---|:---|
| | | Summit Midstream Corporation |
| | | (Registrant) |
| Dated: | May 11, 2026 | */s/ Matthew B. Sicinski* |
| | | Matthew B. Sicinski, Senior Vice President and Chief Accounting Officer |

---

## Exhibit 99.1

**EXHIBIT 99.1**

---

| | |
|:---|:---|
| ![image_0.jpg](image_0.jpg) | <br>Summit Midstream Corporation<br>910 Louisiana Street, Suite 4200<br>Houston, TX 77002 |

---

**Summit Midstream Corporation Reports First Quarter 2026 Financial and Operating Results**

Houston, Texas (May 11, 2026) – Summit Midstream Corporation (NYSE: SMC) ("Summit", "SMC" or the "Company") announced today its financial and operating results for the three months ended March 31, 2026.

**Highlights**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• First quarter 2026 net loss of $3.2 million, Adjusted EBITDA of $54.2 million, cash flow available for distributions ("Distributable Cash Flow" or "DCF") of $26.9 million and free cash flow ("FCF") of $11.4 million

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Connected 37 wells during the first quarter, including four Williston wells from the new 10-year crude gathering agreement; five rigs currently running with approximately 80 DUCs behind the systems

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Executed a new precedent agreement for 100 MMcf/d of firm capacity on the Double E Pipeline, with Q1 2027 expected in-service date and 10-year term

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Repaid all $45 million of accrued Series A Preferred Stock dividends clearing a key milestone toward reinstating a common dividend

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Completed a $42 million private placement of common stock to an affiliate of Tailwater Capital LLC, Summit's largest shareholder, providing additional financial flexibility to execute on high-return growth projects and reduce ABL borrowings

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Reiterating 2026 full-year Adjusted EBITDA guidance of $225 million to $265 million, supported by accelerating producer activity in the Rockies and anticipated Mid-Con volume ramp

**Management Commentary**

Heath Deneke, President, Chief Executive Officer and Chairman, commented, "First quarter results reflected favorable crude oil prices primarily impacting our Rockies segment, offset by lower realized residue gas prices and lower than expected volumes in the Mid-Con Segment. We continue to expect the business to trend toward the midpoint of our original guidance range and are seeing a lot of momentum across our portfolio, particularly in the Permian and Rockies segments.

"Subsequent to quarter end, Double E executed another new 10-year take-or-pay precedent agreement for 100 MMcf/d of firm capacity behind an operational processing plant in Eddy County, New Mexico, with the lateral connecting the plant expected to be in-service in the first quarter of 2027<sup>1</sup>. This agreement, along with those previously announced, brings total contracted volume on Double E to 1.755 Bcf/d, and we remain encouraged by the continued commercial progress on the pipeline. We are evaluating significant shipper interest in the recently launched open season, and remain optimistic there will be sufficient commercial support to make a final investment decision on the approximately 800 MMcf/d mid-point compression expansion project.

"In the Rockies Segment, the favorable crude oil price environment is expected to improve our product margin over the coming quarters and several customers are actively working to accelerate and increase activity beyond our original expectations. We are also encouraged by the preliminary results of four wells behind the new Williston Basin commercial contract we secured last quarter. We have 40 new wells expected across the portfolio in the second quarter, including 20 in the Mid-Con segment."

**First Quarter 2026 Business Highlights**

SMC's average daily natural gas throughput on its wholly owned, operated systems decreased 2.7% to 870 MMcf/d, while liquids volumes decreased 3.0% to 64 Mbbl/d, relative to the fourth quarter of 2025. Double E Pipeline averaged 805 MMcf/d and contributed $8.7 million in Adjusted EBITDA, net to SMC, for the first quarter of 2026.

<sup>1</sup> The agreement is contingent upon satisfaction of certain customary conditions, including Double E board approval.

------

**EXHIBIT 99.1**

**<u>Natural gas price-driven segments</u>:**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Natural gas price-driven segments generated $28.9 million in combined Segment Adjusted EBITDA, a $2.6 million decrease relative to the fourth quarter of 2025, with combined capital expenditures of $7.6 million

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Mid-Con Segment Adjusted EBITDA totaled $19.3 million, a decrease of $2.1 million relative to the fourth quarter of 2025, primarily due to lower natural gas throughput as a result of natural production declines, partially offset by six new Arkoma well connections. Subsequent to quarter end, three additional Arkoma wells were connected to the system and there are currently 17 Barnett DUCs expected to come online in the second quarter of 2026.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Piceance Segment Adjusted EBITDA totaled $9.6 million, a decrease of $0.4 million relative to the fourth quarter of 2025, primarily due to a 7.3% decline in volume throughput driven by temporary shut-ins of approximately 8.0 MMcf/d, natural production declines, and no new well connections during the quarter. Customers currently have ~20 MMcf/d of natural gas shut-in as a result of low regional gas prices. Based on current forecasted prices in the region, we expect this production to resume beginning in the third quarter of 2026.

**<u>Oil price-driven segments</u>:**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Oil price-driven segments generated $35.1 million in combined Segment Adjusted EBITDA, a $1.5 million decrease relative to the fourth quarter of 2025, with combined capital expenditures of $11.0 million

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Rockies Segment Adjusted EBITDA totaled $26.4 million, a decrease of $1.5 million relative to the fourth quarter of 2025, driven by a $1.2 million non-cash imbalance, lower realized residue gas prices negatively impacting percent-of-proceeds contracts and lower fresh water sales, partially offset by a 4.4% increase in natural gas volume throughput and higher realized crude oil and NGL prices beginning in March 2026. 18 wells were connected in the DJ Basin and 13 in the Williston Basin, including the first four 3-mile lateral wells under the new 10-year crude gathering agreement. Five rigs are currently running with approximately 60 DUCs behind the system.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Permian Segment Adjusted EBITDA totaled $8.7 million, flat relative to the fourth quarter of 2025.

The following table presents average daily throughput by reportable segment for the periods indicated:

---

| | | |
|:---|:---|:---|
| | **Three Months Ended March 31,** | **Three Months Ended March 31,** |
| | **2026** | **2025** |
| **Average daily throughput (MMcf/d):** |  |  |
| Rockies | 167 | 129 |
| Piceance | 227 | 266 |
| Mid-Con | 476 | 488 |
| &nbsp;&nbsp;&nbsp;&nbsp;**Aggregate average daily throughput** | **870** | **883** |
| **Average daily throughput (Mbbl/d):** |  |  |
| Rockies | 64 | 74 |
| &nbsp;&nbsp;&nbsp;&nbsp;**Aggregate average daily throughput** | **64** | **74** |
| **Double E average daily throughput (MMcf/d)** <sup>(1)</sup> | **805** | **664** |

---

_________

<sup>(1)</sup> Gross basis, represents 100% of volume throughput for Double E.

------

**EXHIBIT 99.1**

The following table presents adjusted EBITDA by reportable segment for the periods indicated:

---

| | | |
|:---|:---|:---|
| | **Three Months Ended March 31,** | **Three Months Ended March 31,** |
| | **2026** | **2025** |
| | **(In thousands)** | **(In thousands)** |
| **Reportable segment adjusted EBITDA** <sup>(1)</sup>**:** |  |  |
| Rockies | 26375 | 24869 |
| Permian <sup>(2)</sup> | 8730 | 8270 |
| Piceance | 9570 | 11786 |
| Mid-Con | 19327 | 22457 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total | $64002 | $67382 |
| Less: Corporate and Other <sup>(3)</sup> | 9810 | 9876 |
| &nbsp;&nbsp;&nbsp;&nbsp;Adjusted EBITDA <sup>(4)</sup> | $54192 | $57506 |

---

__________

<sup>(1)</sup> Segment adjusted EBITDA is a non-GAAP financial measure. We define segment adjusted EBITDA as total revenues less total costs and expenses, plus (i) other income (excluding interest income), (ii) our proportional adjusted EBITDA for equity method investees, (iii) depreciation and amortization, (iv) adjustments related to minimum volume commitments ("MVC") shortfall payments, (v) adjustments related to capital reimbursement activity, (vi) share-based and noncash compensation, (vii) impairments and (viii) other noncash expenses or losses, less other noncash income or gains.

<sup>(2)</sup> Includes our proportional share of adjusted EBITDA for Double E. We define proportional adjusted EBITDA for our equity method investees as the product of total revenues less total expenses, excluding impairments and other noncash income or expense items; multiplied by our ownership interest during the respective period.

<sup>(3)</sup> Corporate and Other represents those results that are not specifically attributable to a reportable segment or that have not been allocated to our reportable segments, including certain general and administrative expense items and transaction costs.

<sup>(4)</sup> Adjusted EBITDA is a non-GAAP financial measure.

**Capital Expenditures**

Capital expenditures totaled $19.3 million in the first quarter of 2026, inclusive of maintenance capital expenditures of $3.7 million. Capital expenditures in the first quarter of 2026 were primarily related to pad connections in the Rockies and Mid-Con segments.

---

| | | |
|:---|:---|:---|
| | **Three Months Ended March 31,** | **Three Months Ended March 31,** |
| | **2026** | **2025** |
| | **(In thousands)** | **(In thousands)** |
| **Cash paid for capital expenditures** <sup>(1)</sup>**:** |  |  |
| Rockies | $10976 | $11473 |
| Piceance | 239 | 1090 |
| Mid-Con | 7320 | 7222 |
| &nbsp;&nbsp;&nbsp;Total reportable segment capital expenditures | $18535 | $19785 |
| Corporate and Other | 742 | 821 |
| &nbsp;&nbsp;&nbsp;Total cash paid for capital expenditures | $19277 | $20606 |

---

__________

<sup>(1)</sup> Excludes cash paid for capital expenditures by Double E due to equity method accounting.

**Capital & Liquidity**

As of March 31, 2026, SMC had $43.4 million in unrestricted cash on hand and $116 million drawn under its $500 million ABL Revolver with $381 million of borrowing availability, after accounting for $2.7 million of issued, but undrawn letters of credit. As of March 31, 2026, SMC's gross availability based on the borrowing base calculation in the credit agreement was $802 million, which is $302 million greater than the $500 million of lender commitments to

------

**EXHIBIT 99.1**

the ABL Revolver. As of March 31, 2026, SMC was in compliance with all financial covenants, including interest coverage of 2.7x relative to a minimum interest coverage covenant of 2.0x and first lien leverage ratio of 0.4x relative to a maximum first lien leverage ratio of 2.5x. As of March 31, 2026, SMC reported a total leverage ratio of approximately 4.2x.

During the first quarter, Summit Permian Transmission, LLC entered into a new $440 million senior secured term facility, which includes a $50 million committed accordion feature and a $50 million uncommitted accordion feature (the "Term Facility") maturing in March 2031. Proceeds from the Term Facility were used to refinance Summit Permian Transmission's existing credit facility, redeem Summit Permian Transmission Holdco's preferred units, fund an $85 million restricted payment to SMC, provide liquidity to fund SMC's share of capital expenditures including those associated with the recently announced expansion projects, and pay other fees and expenses.

As of March 31, 2026, the Summit Permian Transmission Term Loan Facility had a balance of $340 million. Summit Midstream Permian has $6.1 million of cash-on-hand as of March 31, 2026. The Permian Transmission Term Loan remains non-recourse to SMC.

**MVC Shortfall Payments**

SMC billed its customers $4.1 million in the first quarter of 2026 related to MVC shortfalls. For those customers that do not have MVC shortfall credit banking mechanisms in their gathering agreements, the MVC shortfall payments are accounted for as gathering revenue in the period in which they are earned. In the first quarter of 2026, SMC recognized $4.1 million of gathering revenue associated with MVC shortfall payments. SMC had no adjustments to MVC shortfall payments in the first quarter of 2026. SMC's MVC shortfall payment mechanisms contributed $4.1 million of total Adjusted EBITDA in the first quarter of 2026.

---

| | | | | |
|:---|:---|:---|:---|:---|
| | **Three months ended March 31, 2026** | **Three months ended March 31, 2026** | **Three months ended March 31, 2026** | **Three months ended March 31, 2026** |
| | **MVC Billings** | **Gathering revenue** | **Adjustments to MVC shortfall payments** | **Net impact to adjusted EBITDA** |
| | **(In thousands)** | **(In thousands)** | **(In thousands)** | **(In thousands)** |
| **Net change in deferred revenue related to MVC**<br>&nbsp;&nbsp;&nbsp;&nbsp;**shortfall payments:** | | | | |
| Piceance Basin | $— | $— | $— | $— |
| &nbsp;&nbsp;&nbsp;&nbsp;**Total net change** | $**—** | $**—** | $**—** | $**—** |
| **MVC shortfall payment adjustments:** |  |  |  |  |
| Rockies | $183 | $183 | $— | $183 |
| Piceance | 3890 | 3890 |  | $3890 |
| Northeast |  |  |  |  |
| Mid-Con |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;**Total MVC shortfall payment adjustments** | $**4073** | $**4073** | $**—** | $**4073** |
| &nbsp;&nbsp;&nbsp;&nbsp;**Total** <sup>(1)</sup> | $**4073** | $**4073** | $**—** | $**4073** |

---

<sup>(1)</sup> Exclusive of Double E due to equity method accounting.

**Quarterly Dividend** 

The Board of Directors of Summit Midstream Corporation continued to suspend cash dividends payable on the common stock for the period ended March 31, 2026. The quarterly cash dividend on the Series A Preferred Stock, for the period ended June 14, 2026, will be paid to preferred shareholders of record as of the close of business on June 1, 2026.

On March 27, 2026, all unpaid dividends of $46.3 million on the Series A Preferred Stock were paid to holders of record as of the close of business on March 17, 2026.

------

**EXHIBIT 99.1**

**First Quarter 2026 Earnings Call Information**

SMC will host a conference call at 10:00 a.m. Eastern on May 12, 2026, to discuss its quarterly operating and financial results. The call can be accessed via teleconference at the following link: Q1 2026 Summit Midstream Corporation Earnings Conference Call (https://register-conf.media-server.com/register/BI874f39fdf8c54b499c4ac477755fbcad). Once registration is completed, participants will receive a dial-in number along with a personalized PIN to access the call. While not required, it is recommended that participants join 10 minutes prior to the event start. The conference call, live webcast and archive of the call can be accessed through the Investors section of SMC's website at www.summitmidstream.com.

**Upcoming Investor Conferences**

Members of SMC's senior management team will attend the 2026 Energy Infrastructure CEO & Investor Conference which will take place on May 18–20, 2026, the 2026 RBC Capital Markets Global Energy, Power & Infrastructure Conference taking place on June 2–3, 2026, and the BofA Energy and Power Credit Conference on June 3–4, 2026. The presentation materials associated with each event will be accessible through the Investors section of SMC's website at www.summitmidstream.com prior to the beginning of the conference.

**Use of Non-GAAP Financial Measures**

We report financial results in accordance with U.S. generally accepted accounting principles ("GAAP"). We also present adjusted EBITDA, segment adjusted EBITDA, Distributable Cash Flow, and Free Cash Flow, non-GAAP financial measures.

*<u>Adjusted EBITDA</u>*

We define adjusted EBITDA as net income or loss, plus interest expense, income tax expense, depreciation and amortization, our proportional adjusted EBITDA for equity method investees, adjustments related to MVC shortfall payments, adjustments related to capital reimbursement activity, share-based and noncash compensation, impairments, items of income or loss that we characterize as unrepresentative of our ongoing operations and other noncash expenses or losses, income tax benefit, income (loss) from equity method investees and other noncash income or gains. Because adjusted EBITDA may be defined differently by other entities in our industry, our definition of this non-GAAP financial measure may not be comparable to similarly titled measures of other entities, thereby diminishing its utility.

Management uses adjusted EBITDA in making financial, operating and planning decisions and in evaluating our financial performance. Furthermore, management believes that adjusted EBITDA may provide external users of our financial statements, such as investors, commercial banks, research analysts and others, with additional meaningful comparisons between current results and results of prior periods as they are expected to be reflective of our core ongoing business.

Adjusted EBITDA is used as a supplemental financial measure to assess:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the ability of our assets to generate cash sufficient to make future potential cash dividends and support our indebtedness;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the financial performance of our assets without regard to financing methods, capital structure or historical cost basis;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• our operating performance and return on capital as compared to those of other entities in the midstream energy sector, without regard to financing or capital structure;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the attractiveness of capital projects and acquisitions and the overall rates of return on alternative investment opportunities; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the financial performance of our assets without regard to (i) income or loss from equity method investees, (ii) the impact of the timing of MVC shortfall payments under our gathering agreements or (iii) the timing of impairments or other income or expense items that we characterize as unrepresentative of our ongoing operations.

Adjusted EBITDA has limitations as an analytical tool and investors should not consider it in isolation or as a substitute for analysis of our results as reported under GAAP. For example:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• certain items excluded from adjusted EBITDA are significant components in understanding and assessing an entity's financial performance, such as an entity's cost of capital and tax structure;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• adjusted EBITDA does not reflect our cash expenditures or future requirements for capital expenditures or contractual commitments;

------

**EXHIBIT 99.1**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• adjusted EBITDA does not reflect changes in, or cash requirements for, our working capital needs; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• although depreciation and amortization are noncash charges, the assets being depreciated and amortized will often have to be replaced in the future, and adjusted EBITDA does not reflect any cash requirements for such replacements.

We compensate for the limitations of adjusted EBITDA as an analytical tool by reviewing the comparable GAAP financial measures, understanding the differences between the financial measures and incorporating these data points into our decision-making process.

*<u>Distributable Cash Flow</u>*

We define Distributable Cash Flow as adjusted EBITDA, as defined above, less cash interest paid, cash paid for taxes, net interest expense accrued and paid on the senior notes, and maintenance capital expenditures.

*<u>Free Cash Flow</u>*

We define free cash flow as distributable cash flow attributable to common and preferred shareholders less growth capital expenditures, less investments in equity method investees, less dividends to common and preferred shareholders. Free cash flow excludes proceeds from asset sales and cash consideration paid for acquisitions.

We do not provide the GAAP financial measures of net income or loss or net cash provided by operating activities on a forward-looking basis because we are unable to predict, without unreasonable effort, certain components thereof including, but not limited to, (i) income or loss from equity method investees and (ii) asset impairments. These items are inherently uncertain and depend on various factors, many of which are beyond our control. As such, any associated estimate and its impact on our GAAP performance and cash flow measures could vary materially based on a variety of acceptable management assumptions.

**About Summit Midstream Corporation**

SMC is a value-driven corporation focused on developing, owning and operating midstream energy infrastructure assets that are strategically located in the core producing areas of unconventional resource basins, primarily shale formations, in the continental United States. SMC provides natural gas, crude oil and produced water gathering, processing and transportation services pursuant to primarily long-term, fee-based agreements with customers and counterparties in five unconventional resource basins: (i) the Williston Basin, which includes the Bakken and Three Forks shale formations in North Dakota; (ii) the Denver-Julesburg Basin, which includes the Niobrara and Codell shale formations in Colorado and Wyoming; (iii) the Fort Worth Basin, which includes the Barnett Shale formation in Texas; (iv) the Arkoma Basin, which includes the Woodford and Caney shale formations in Oklahoma; and (v) the Piceance Basin, which includes the Mesaverde formation as well as the Mancos and Niobrara shale formations in Colorado. SMC has an equity method investment in Double E Pipeline, LLC, which provides interstate natural gas transportation service from multiple receipt points in the Delaware Basin to various delivery points in and around the Waha Hub in Texas. SMC is headquartered in Houston, Texas.

**Forward-Looking Statements**

This press release includes certain statements concerning expectations for the future that are forward-looking within the meaning of the federal securities laws. Forward-looking statements include, without limitation, any statement that may project, indicate or imply future results, events, performance or achievements and may contain the words "expect," "intend," "plan," "anticipate," "estimate," "believe," "will be," "will continue," "will likely result," and similar expressions, or future conditional verbs such as "may," "will," "should," "would" and "could." In addition, any statement concerning future financial performance (including future revenues, earnings or growth rates), payment of dividends on any series of stock, ongoing business strategies and possible actions taken by SMC or its subsidiaries are also forward-looking statements. Forward-looking statements also contain known and unknown risks and uncertainties (many of which are difficult to predict and beyond management's control) that may cause SMC's actual results in future periods to differ materially from anticipated or projected results. An extensive list of specific material risks and uncertainties affecting SMC is contained in its 2025 Annual Report on Form 10-K filed with the Securities and Exchange Commission (the "SEC") on March 16, 2026, as amended and updated from time to time. Any forward-looking statements in this press release are made as of the date of this press release and SMC undertakes no obligation to update or revise any forward-looking statements to reflect new information or events.

------

**SUMMIT MIDSTREAM CORPORATION AND SUBSIDIARIES**

**UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS**

---

| | | |
|:---|:---|:---|
| | **March 31,<br>2026** | **December 31,<br>2025** |
| | **(In thousands)** | **(In thousands)** |
| **ASSETS** | | |
| &nbsp;&nbsp;&nbsp;Cash and cash equivalents | $43390 | $9274 |
| &nbsp;&nbsp;&nbsp;Restricted cash | 6132 | 10405 |
| &nbsp;&nbsp;&nbsp;Accounts receivable | 74189 | 69752 |
| &nbsp;&nbsp;&nbsp;Other current assets | 6257 | 7490 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total current assets | 129968 | 96921 |
| Property, plant and equipment, net | 1836358 | 1844146 |
| Intangible assets, net | 150892 | 153564 |
| Investment in Double E | 263226 | 265583 |
| Other noncurrent assets | 25949 | 27395 |
| &nbsp;&nbsp;&nbsp;&nbsp;TOTAL ASSETS | $2406393 | $2387609 |
| **LIABILITIES AND EQUITY** |  |  |
| &nbsp;&nbsp;&nbsp;Trade accounts payable | $27585 | $31652 |
| &nbsp;&nbsp;&nbsp;Accrued expenses | 36116 | 24270 |
| &nbsp;&nbsp;&nbsp;Deferred revenue | 9135 | 10122 |
| &nbsp;&nbsp;&nbsp;Ad valorem taxes payable | 4975 | 10190 |
| &nbsp;&nbsp;&nbsp;Accrued compensation and employee benefits | 4223 | 12063 |
| &nbsp;&nbsp;&nbsp;Accrued interest | 9891 | 30045 |
| &nbsp;&nbsp;&nbsp;Accrued environmental remediation | 1573 | 1710 |
| &nbsp;&nbsp;&nbsp;Accrued settlement payable | 8333 | 8333 |
| &nbsp;&nbsp;&nbsp;Current portion of long-term debt | 850 | 21223 |
| &nbsp;&nbsp;&nbsp;Other current liabilities | 5522 | 27185 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total current liabilities | 108203 | 176793 |
| Deferred tax liabilities, net | 91389 | 73635 |
| Long-term debt, net | 1264914 | 1024347 |
| Noncurrent deferred revenue | 17577 | 18398 |
| Noncurrent accrued environmental remediation | 52 | 52 |
| Other noncurrent liabilities | 9266 | 6532 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;TOTAL LIABILITIES | 1491401 | 1299757 |
| Commitments and contingencies |  |  |
| **Mezzanine Equity** |  |  |
| Subsidiary Series A Preferred Units |  | 141296 |
| **Equity** |  |  |
| Series A Preferred Shares | 64165 | 110468 |
| Common stock, $0.01 par value | 136 | 122 |
| Class B Common Stock, $0.01 par value | 65 | 65 |
| Additional paid-in capital | 739647 | 638427 |
| Accumulated deficit | (208197) | (202902) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total Company stockholders' equity | 595816 | 546180 |
| Noncontrolling interest | 319176 | 400376 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total Equity | 914992 | 946556 |
| &nbsp;&nbsp;&nbsp;&nbsp;TOTAL LIABILITIES AND EQUITY | $2406393 | $2387609 |

---

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**SUMMIT MIDSTREAM CORPORATION AND SUBSIDIARIES**

**UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS**

---

| | | |
|:---|:---|:---|
| | **Three Months Ended March 31,** | **Three Months Ended March 31,** |
| | **2026** | **2025** |
| | **(In thousands, except per unit amounts)** | **(In thousands, except per unit amounts)** |
| **Revenues:** |  |  |
| Gathering services and related fees | $59570 | $64165 |
| Natural gas, NGLs and condensate sales | 73651 | 59327 |
| Other revenues | 5921 | 9205 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total revenues | 139142 | 132697 |
| **Costs and expenses:** |  |  |
| Cost of natural gas and NGLs | 39372 | 35434 |
| Operation and maintenance | 38217 | 33530 |
| General and administrative | 17873 | 16600 |
| Depreciation and amortization | 26708 | 28517 |
| Transaction costs | 222 | 2793 |
| Acquisition integration costs | 373 | 1244 |
| Loss on asset sales, net | 29 |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Total costs and expenses | 122794 | 118118 |
| Other income (expense), net | (590) | 9057 |
| Loss on interest rate swaps | (150) | (966) |
| Loss on sale of business |  | (43) |
| Interest expense | (25013) | (22537) |
| Income from equity method investees | 5237 | 4840 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Income (loss) before income taxes | (4168) | 4930 |
| Income tax benefit (expense) | 1002 | (296) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net income (loss) | $(3166) | $4634 |
| **Net loss per share:** |  |  |
| &nbsp;&nbsp;&nbsp;Common stock – basic | $(0.43) | $(0.16) |
| &nbsp;&nbsp;&nbsp;Common stock – diluted | $(0.43) | $(0.16) |
| **Weighted-average number of shares outstanding:** |  |  |
| &nbsp;&nbsp;&nbsp;Common stock – basic | 12329 | 11767 |
| &nbsp;&nbsp;Common stock – diluted | 12329 | 11767 |

---

__________

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**SUMMIT MIDSTREAM CORPORATION AND SUBSIDIARIES**

**UNAUDITED OTHER FINANCIAL AND OPERATING DATA**

---

| | | |
|:---|:---|:---|
| | **Three Months Ended March 31,** | **Three Months Ended March 31,** |
| | **2026** | **2025** |
| | **(In thousands)** | **(In thousands)** |
| **Other financial data:** |  |  |
| Net income (loss) | $(3166) | $4634 |
| Net cash provided by operating activities | 6870 | 16030 |
| Capital expenditures | 19277 | 20606 |
| Contributions to equity method investees |  | 2488 |
| Adjusted EBITDA | 54192 | 57506 |
| Cash flow available for distributions <sup>(1)</sup> | 26910 | 33529 |
| Free Cash Flow | 11376 | 11354 |
| Dividends <sup>(2)</sup> | 49416 | 3359 |
| **Operating data:** |  |  |
| Aggregate average daily throughput – natural gas (MMcf/d) | 870 | 883 |
| Aggregate average daily throughput – liquids (Mbbl/d) | 64 | 74 |
| Double E average daily throughput (MMcf/d) <sup>(3)</sup> | 805 | 664 |

---

__________

<sup>(1)</sup> Cash flow available for distributions is also referred to as Distributable Cash Flow, or DCF.

<sup>(2)</sup> Represents dividends declared and ultimately paid or expected to be paid to preferred and common shareholders in respect of a given period. The cash dividend payment for the quarterly period ended March 31, 2026 includes a payment of $46.3 million for accrued and unpaid dividends owed from March 15, 2020 to December 14, 2024. Excludes distributions paid on the Subsidiary Series A Preferred Units issued at Summit Permian Transmission Holdco, LLC. The board of directors of Summit Midstream Corporation reinstated cash dividends on its Series A Preferred Stock beginning on March 14, 2025.

<sup>(3)</sup> Gross basis, represents 100% of volume throughput for Double E.

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**SUMMIT MIDSTREAM CORPORATION AND SUBSIDIARIES**

**UNAUDITED RECONCILIATIONS TO NON-GAAP FINANCIAL MEASURES**

---

| | | |
|:---|:---|:---|
| | **Three Months Ended March 31,** | **Three Months Ended March 31,** |
| | **2026** | **2025** |
| | **(In thousands)** | **(In thousands)** |
| **Reconciliations of net (loss) income to adjusted** <br>**&nbsp;&nbsp;&nbsp;&nbsp;EBITDA, Distributable Cash Flow, and Free Cash Flow:** |  |  |
| Net income (loss) | $(3166) | $4634 |
| **Add:** |  |  |
| &nbsp;&nbsp;&nbsp;Interest expense | 25013 | 22537 |
| &nbsp;&nbsp;&nbsp;Income tax benefit (expense) | (1002) | 296 |
| &nbsp;&nbsp;Depreciation and amortization <sup>(1)</sup> | 26943 | 28752 |
| &nbsp;&nbsp;Proportional adjusted EBITDA for equity method investees <sup>(2)</sup> | 7871 | 7404 |
| &nbsp;&nbsp;Adjustments related to capital reimbursement activity <sup>(3)</sup> | (2825) | (1946) |
| &nbsp;&nbsp;&nbsp;Share-based and noncash compensation | 3036 | 2375 |
| &nbsp;&nbsp;&nbsp;(Gain) loss in fair value of Tall Oak earn out | 503 | (9023) |
| &nbsp;&nbsp;&nbsp;Loss on asset sales, net | 29 |  |
| &nbsp;&nbsp;&nbsp;Loss on interest rate swaps | 150 | 966 |
| &nbsp;&nbsp;&nbsp;Loss on sale of business |  | 43 |
| &nbsp;&nbsp;Other, net <sup>(4)</sup> | 2877 | 6308 |
| **Less:** |  |  |
| &nbsp;&nbsp;&nbsp;Income from equity method investees | 5237 | 4840 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Adjusted EBITDA | $54192 | $57506 |
| **Less:** |  |  |
| &nbsp;&nbsp;&nbsp;Cash interest paid | 41328 | 34199 |
| &nbsp;&nbsp;&nbsp;Cash paid for taxes |  | 85 |
| &nbsp;&nbsp;Senior notes interest adjustment <sup>(5)</sup> | (17789) | (12854) |
| &nbsp;&nbsp;&nbsp;Maintenance capital expenditures | 3743 | 2547 |
| &nbsp;&nbsp;&nbsp;&nbsp;Cash flow available for distributions <sup>(6)</sup> | $26910 | $33529 |
| **Less:** |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Growth capital expenditures | 15534 | 18059 |
| &nbsp;&nbsp;&nbsp;&nbsp;Investment in equity method investee |  | 2488 |
| &nbsp;&nbsp;&nbsp;&nbsp;Distributions on Subsidiary Series A Preferred Units |  | 1628 |
| &nbsp;&nbsp;&nbsp;&nbsp;Free Cash Flow | $11376 | $11354 |

---

<sup>(1)</sup> Includes the amortization expense associated with our favorable gas gathering contracts as reported in other revenues.

<sup>(2)</sup> Reflects our proportionate share of Double E.

<sup>(3)</sup> Adjustments related to capital reimbursement activity represent contributions in aid of construction revenue recognized in accordance with Accounting Standards Update No. 2014-09 Revenue from Contracts with Customers.

<sup>(4)</sup> Represents items of income or loss that we characterize as unrepresentative of our ongoing operations. For the three months ended March 31, 2026, the amount includes $2.4 million of transaction and other costs. For the three months ended March 31, 2025, the amount includes $4.9 million of transaction and other costs.

<sup>(5)</sup> Senior notes interest adjustment represents the net of interest expense accrued and paid during the period. Interest on the 2029 Secured Notes is paid semi-annually in arrears on each February 15 and August 15.

<sup>(6)</sup> Represents cash flow available for distribution to preferred and common shareholders. Common dividends cannot be paid unless all accrued preferred dividends are paid. Cash flow available for distributions is also referred to as Distributable Cash Flow, or DCF.

------

**SUMMIT MIDSTREAM CORPORATION AND SUBSIDIARIES**

**UNAUDITED RECONCILIATIONS TO NON-GAAP FINANCIAL MEASURES**

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| | | |
|:---|:---|:---|
| | **Three Months Ended March 31,** | **Three Months Ended March 31,** |
| | **2026** | **2025** |
| | **(In thousands)** | **(In thousands)** |
| **Reconciliation of net cash provided by operating activities to adjusted**<br>**&nbsp;&nbsp;&nbsp;&nbsp;EBITDA, Distributable Cash Flow, and Free Cash Flow:** |  |  |
| Net cash provided by operating activities | $6870 | $16030 |
| **Add:** |  |  |
| &nbsp;&nbsp;&nbsp;Interest expense, excluding amortization of debt issuance costs | 22442 | 21569 |
| &nbsp;&nbsp;&nbsp;Income tax expense (benefit), excluding federal income taxes | (5) | 64 |
| &nbsp;&nbsp;&nbsp;Changes in operating assets and liabilities | 25618 | 18025 |
| &nbsp;&nbsp;Proportional adjusted EBITDA for equity method investees <sup>(1)</sup> | 7871 | 7404 |
| &nbsp;&nbsp;Adjustments related to capital reimbursement activity <sup>(2)</sup> | (2825) | (1946) |
| &nbsp;&nbsp;&nbsp;Realized gain on swaps | (380) | (904) |
| &nbsp;&nbsp;Other, net <sup>(3)</sup> | 2877 | 6307 |
| **Less:** |  |  |
| &nbsp;&nbsp;&nbsp;Distributions from equity method investees | 7595 | 6694 |
| &nbsp;&nbsp;&nbsp;Noncash lease expense | 681 | 2349 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Adjusted EBITDA | $54192 | $57506 |
| **Less:** |  |  |
| &nbsp;&nbsp;&nbsp;Cash interest paid | 41328 | 34199 |
| &nbsp;&nbsp;&nbsp;Cash paid for taxes |  | 85 |
| &nbsp;&nbsp;Senior notes interest adjustment <sup>(4)</sup> | (17789) | (12854) |
| &nbsp;&nbsp;&nbsp;Maintenance capital expenditures | 3743 | 2547 |
| &nbsp;&nbsp;&nbsp;&nbsp;Cash flow available for distributions <sup>(5)</sup> | $26910 | $33529 |
| **Less:** |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Growth capital expenditures | 15534 | 18059 |
| &nbsp;&nbsp;&nbsp;&nbsp;Investment in equity method investee |  | 2488 |
| &nbsp;&nbsp;&nbsp;&nbsp;Distributions on Subsidiary Series A Preferred Units |  | 1628 |
| &nbsp;&nbsp;&nbsp;&nbsp;Free Cash Flow | $11376 | $11354 |

---

<sup>(1)</sup> Reflects our proportionate share of Double E.

<sup>(2)</sup> Adjustments related to capital reimbursement activity represent contributions in aid of construction revenue recognized in accordance with Accounting Standards Update No. 2014-09 Revenue from Contracts with Customers.

<sup>(3)</sup> Represents items of income or loss that we characterize as unrepresentative of our ongoing operations. For the three months ended March 31, 2026, the amount includes $2.4 million of transaction and other costs. For the three months ended March 31, 2025, the amount includes $4.9 million of transaction and other costs.

<sup>(4)</sup> Senior notes interest adjustment represents the net of interest expense accrued and paid during the period. Interest on the 2029 Secured Notes is paid semi-annually in arrears on each February 15 and August 15.

<sup>(5)</sup> Represents cash flow available for distribution to preferred and common shareholders. Common dividends cannot be paid unless all accrued preferred dividends are paid. Cash flow available for distributions is also referred to as Distributable Cash Flow, or DCF.

Contact: 832-413-4770, ir@summitmidstream.com

SOURCE: Summit Midstream Corporation