Form 8-K

8-K — Summit Midstream Corp

Accession: 0002024218-26-000070

Filed: 2026-05-11

Period: 2026-05-11

CIK: 0002024218

SIC: 4922 (NATURAL GAS TRANSMISSION)

Item: Results of Operations and Financial Condition

Item: Financial Statements and Exhibits

Documents

8-K — smc-20260511.htm (Primary)

EX-99.1 — PRESS RELEASE (smc1q2026earningsrelease.htm)

GRAPHIC (image_0.jpg)

XML — IDEA: XBRL DOCUMENT (R1.htm)

8-K — CURRENT REPORT

8-K (Primary)

Filename: smc-20260511.htm · Sequence: 1

smc-20260511

0002024218FALSE00020242182025-11-102025-11-10

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:

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

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

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

o 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

Common Stock SMC New York Stock Exchange

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. o

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) Exhibits

Exhibit Number Description

99.1

Press Release, dated May 11, 2026.

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

EX-99.1 — PRESS RELEASE

EX-99.1

Filename: smc1q2026earningsrelease.htm · Sequence: 2

Document

EXHIBIT 99.1

Summit Midstream Corporation

910 Louisiana Street, Suite 4200

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

•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

•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

•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

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

•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

•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 20271. 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.

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

EXHIBIT 99.1

Natural gas price-driven segments:

•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

•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.

•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.

Oil price-driven segments:

•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

•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.

•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,

2026 2025

Average daily throughput (MMcf/d):

Rockies 167 129

Piceance 227 266

Mid-Con 476 488

Aggregate average daily throughput 870 883

Average daily throughput (Mbbl/d):

Rockies 64 74

Aggregate average daily throughput 64 74

Double E average daily throughput (MMcf/d) (1)

805 664

_________

(1)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,

2026 2025

(In thousands)

Reportable segment adjusted EBITDA (1):

Rockies 26,375 24,869

Permian (2)

8,730 8,270

Piceance 9,570 11,786

Mid-Con 19,327 22,457

Total $ 64,002 $ 67,382

Less: Corporate and Other (3)

9,810 9,876

Adjusted EBITDA (4)

$ 54,192 $ 57,506

__________

(1)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.

(2)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.

(3)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.

(4)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,

2026 2025

(In thousands)

Cash paid for capital expenditures (1):

Rockies $ 10,976 $ 11,473

Piceance 239 1,090

Mid-Con 7,320 7,222

Total reportable segment capital expenditures $ 18,535 $ 19,785

Corporate and Other 742 821

Total cash paid for capital expenditures $ 19,277 $ 20,606

__________

(1)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

MVC Billings Gathering revenue Adjustments to MVC shortfall payments Net impact to adjusted EBITDA

(In thousands)

Net change in deferred revenue related to MVC

shortfall payments:

Piceance Basin $ — $ — $ — $ —

Total net change $ — $ — $ — $ —

MVC shortfall payment adjustments:

Rockies $ 183 $ 183 $ — $ 183

Piceance 3,890 3,890 — $ 3,890

Northeast — — — —

Mid-Con — — — —

Total MVC shortfall payment adjustments $ 4,073 $ 4,073 $ — $ 4,073

Total (1)

$ 4,073 $ 4,073 $ — $ 4,073

(1)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.

Adjusted EBITDA

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:

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

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

•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;

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

•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:

•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;

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

EXHIBIT 99.1

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

•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.

Distributable Cash Flow

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.

Free Cash Flow

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,

2026 December 31,

2025

(In thousands)

ASSETS

Cash and cash equivalents $ 43,390 $ 9,274

Restricted cash 6,132 10,405

Accounts receivable 74,189 69,752

Other current assets 6,257 7,490

Total current assets 129,968 96,921

Property, plant and equipment, net 1,836,358 1,844,146

Intangible assets, net 150,892 153,564

Investment in Double E 263,226 265,583

Other noncurrent assets 25,949 27,395

TOTAL ASSETS $ 2,406,393 $ 2,387,609

LIABILITIES AND EQUITY

Trade accounts payable $ 27,585 $ 31,652

Accrued expenses 36,116 24,270

Deferred revenue 9,135 10,122

Ad valorem taxes payable 4,975 10,190

Accrued compensation and employee benefits 4,223 12,063

Accrued interest 9,891 30,045

Accrued environmental remediation 1,573 1,710

Accrued settlement payable 8,333 8,333

Current portion of long-term debt 850 21,223

Other current liabilities 5,522 27,185

Total current liabilities 108,203 176,793

Deferred tax liabilities, net 91,389 73,635

Long-term debt, net 1,264,914 1,024,347

Noncurrent deferred revenue 17,577 18,398

Noncurrent accrued environmental remediation 52 52

Other noncurrent liabilities 9,266 6,532

TOTAL LIABILITIES 1,491,401 1,299,757

Commitments and contingencies

Mezzanine Equity

Subsidiary Series A Preferred Units — 141,296

Equity

Series A Preferred Shares 64,165 110,468

Common stock, $0.01 par value 136 122

Class B Common Stock, $0.01 par value 65 65

Additional paid-in capital 739,647 638,427

Accumulated deficit (208,197) (202,902)

Total Company stockholders' equity 595,816 546,180

Noncontrolling interest 319,176 400,376

Total Equity 914,992 946,556

TOTAL LIABILITIES AND EQUITY $ 2,406,393 $ 2,387,609

SUMMIT MIDSTREAM CORPORATION AND SUBSIDIARIES

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

Three Months Ended March 31,

2026 2025

(In thousands, except per unit amounts)

Revenues:

Gathering services and related fees $ 59,570 $ 64,165

Natural gas, NGLs and condensate sales 73,651 59,327

Other revenues 5,921 9,205

Total revenues 139,142 132,697

Costs and expenses:

Cost of natural gas and NGLs 39,372 35,434

Operation and maintenance 38,217 33,530

General and administrative 17,873 16,600

Depreciation and amortization 26,708 28,517

Transaction costs 222 2,793

Acquisition integration costs 373 1,244

Loss on asset sales, net 29 —

Total costs and expenses 122,794 118,118

Other income (expense), net (590) 9,057

Loss on interest rate swaps (150) (966)

Loss on sale of business — (43)

Interest expense (25,013) (22,537)

Income from equity method investees 5,237 4,840

Income (loss) before income taxes (4,168) 4,930

Income tax benefit (expense) 1,002 (296)

Net income (loss) $ (3,166) $ 4,634

Net loss per share:

Common stock – basic $ (0.43) $ (0.16)

Common stock – diluted $ (0.43) $ (0.16)

Weighted-average number of shares outstanding:

Common stock – basic 12,329 11,767

Common stock – diluted

12,329 11,767

__________

SUMMIT MIDSTREAM CORPORATION AND SUBSIDIARIES

UNAUDITED OTHER FINANCIAL AND OPERATING DATA

Three Months Ended March 31,

2026 2025

(In thousands)

Other financial data:

Net income (loss) $ (3,166) $ 4,634

Net cash provided by operating activities 6,870 16,030

Capital expenditures 19,277 20,606

Contributions to equity method investees — 2,488

Adjusted EBITDA 54,192 57,506

Cash flow available for distributions (1)

26,910 33,529

Free Cash Flow 11,376 11,354

Dividends (2)

49,416 3,359

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) (3)

805 664

__________

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

(2)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.

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

SUMMIT MIDSTREAM CORPORATION AND SUBSIDIARIES

UNAUDITED RECONCILIATIONS TO NON-GAAP FINANCIAL MEASURES

Three Months Ended March 31,

2026 2025

(In thousands)

Reconciliations of net (loss) income to adjusted

EBITDA, Distributable Cash Flow, and Free Cash Flow:

Net income (loss) $ (3,166) $ 4,634

Add:

Interest expense 25,013 22,537

Income tax benefit (expense) (1,002) 296

Depreciation and amortization (1)

26,943 28,752

Proportional adjusted EBITDA for equity method investees (2)

7,871 7,404

Adjustments related to capital reimbursement activity (3)

(2,825) (1,946)

Share-based and noncash compensation 3,036 2,375

(Gain) loss in fair value of Tall Oak earn out 503 (9,023)

Loss on asset sales, net 29 —

Loss on interest rate swaps 150 966

Loss on sale of business — 43

Other, net (4)

2,877 6,308

Less:

Income from equity method investees 5,237 4,840

Adjusted EBITDA $ 54,192 $ 57,506

Less:

Cash interest paid 41,328 34,199

Cash paid for taxes — 85

Senior notes interest adjustment (5)

(17,789) (12,854)

Maintenance capital expenditures 3,743 2,547

Cash flow available for distributions (6)

$ 26,910 $ 33,529

Less:

Growth capital expenditures 15,534 18,059

Investment in equity method investee — 2,488

Distributions on Subsidiary Series A Preferred Units — 1,628

Free Cash Flow $ 11,376 $ 11,354

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

(2)Reflects our proportionate share of Double E.

(3)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.

(4)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.

(5)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.

(6)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

Three Months Ended March 31,

2026 2025

(In thousands)

Reconciliation of net cash provided by operating activities to adjusted

EBITDA, Distributable Cash Flow, and Free Cash Flow:

Net cash provided by operating activities $ 6,870 $ 16,030

Add:

Interest expense, excluding amortization of debt issuance costs 22,442 21,569

Income tax expense (benefit), excluding federal income taxes (5) 64

Changes in operating assets and liabilities 25,618 18,025

Proportional adjusted EBITDA for equity method investees (1)

7,871 7,404

Adjustments related to capital reimbursement activity (2)

(2,825) (1,946)

Realized gain on swaps (380) (904)

Other, net (3)

2,877 6,307

Less:

Distributions from equity method investees 7,595 6,694

Noncash lease expense 681 2,349

Adjusted EBITDA $ 54,192 $ 57,506

Less:

Cash interest paid 41,328 34,199

Cash paid for taxes — 85

Senior notes interest adjustment (4)

(17,789) (12,854)

Maintenance capital expenditures 3,743 2,547

Cash flow available for distributions (5)

$ 26,910 $ 33,529

Less:

Growth capital expenditures 15,534 18,059

Investment in equity method investee — 2,488

Distributions on Subsidiary Series A Preferred Units — 1,628

Free Cash Flow $ 11,376 $ 11,354

(1)Reflects our proportionate share of Double E.

(2)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.

(3)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.

(4)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.

(5)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

GRAPHIC

Filename: image_0.jpg · Sequence: 6

Binary file (62866 bytes)

Download image_0.jpg

XML — IDEA: XBRL DOCUMENT

XML

Filename: R1.htm · Sequence: 8

v3.26.1

Cover

Nov. 10, 2025

Cover [Abstract]

Central Index Key

0002024218

Amendment Flag

false

Document Type

8-K

Document Period End Date

May 11, 2026

Registrant Name

Summit Midstream Corporation

Entity Incorporation, State or Country Code

Entity File Number

001-42201

Entity Tax Identification Number

99-3056990

Entity Address, Address Line One

910 Louisiana Street

Entity Address, Address Line Two

Suite 4200

Entity Address, City or Town

Houston

Entity Address, State or Province

Entity Address, Postal Zip Code

77002

City Area Code

832

Local Phone Number

413-4770

Pre-commencement Issuer Tender Offer

false

Pre-commencement Tender Offer

false

Soliciting Material

false

Written Communications

false

Title of 12(b) Security

Common Stock

Trading Symbol

SMC

Security Exchange Name

NYSE

Entity Emerging Growth Company

false

- Definition

Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.

+ References

No definition available.

+ Details

Name:

dei_AmendmentFlag

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Area code of city

+ References

No definition available.

+ Details

Name:

dei_CityAreaCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Cover page.

+ References

No definition available.

+ Details

Name:

dei_CoverAbstract

Namespace Prefix:

dei_

Data Type:

xbrli:stringItemType

Balance Type:

Period Type:

duration

- Definition

For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

+ References

No definition available.

+ Details

Name:

dei_DocumentPeriodEndDate

Namespace Prefix:

dei_

Data Type:

xbrli:dateItemType

Balance Type:

Period Type:

duration

- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

+ References

No definition available.

+ Details

Name:

dei_DocumentType

Namespace Prefix:

dei_

Data Type:

dei:submissionTypeItemType

Balance Type:

Period Type:

duration

- Definition

Address Line 1 such as Attn, Building Name, Street Name

+ References

No definition available.

+ Details

Name:

dei_EntityAddressAddressLine1

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Address Line 2 such as Street or Suite number

+ References

No definition available.

+ Details

Name:

dei_EntityAddressAddressLine2

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Name of the City or Town

+ References

No definition available.

+ Details

Name:

dei_EntityAddressCityOrTown

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Code for the postal or zip code

+ References

No definition available.

+ Details

Name:

dei_EntityAddressPostalZipCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Name of the state or province.

+ References

No definition available.

+ Details

Name:

dei_EntityAddressStateOrProvince

Namespace Prefix:

dei_

Data Type:

dei:stateOrProvinceItemType

Balance Type:

Period Type:

duration

- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityCentralIndexKey

Namespace Prefix:

dei_

Data Type:

dei:centralIndexKeyItemType

Balance Type:

Period Type:

duration

- Definition

Indicate if registrant meets the emerging growth company criteria.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityEmergingGrowthCompany

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

+ References

No definition available.

+ Details

Name:

dei_EntityFileNumber

Namespace Prefix:

dei_

Data Type:

dei:fileNumberItemType

Balance Type:

Period Type:

duration

- Definition

Two-character EDGAR code representing the state or country of incorporation.

+ References

No definition available.

+ Details

Name:

dei_EntityIncorporationStateCountryCode

Namespace Prefix:

dei_

Data Type:

dei:edgarStateCountryItemType

Balance Type:

Period Type:

duration

- Definition

The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityRegistrantName

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityTaxIdentificationNumber

Namespace Prefix:

dei_

Data Type:

dei:employerIdItemType

Balance Type:

Period Type:

duration

- Definition

Local phone number for entity.

+ References

No definition available.

+ Details

Name:

dei_LocalPhoneNumber

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 13e

-Subsection 4c

+ Details

Name:

dei_PreCommencementIssuerTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14d

-Subsection 2b

+ Details

Name:

dei_PreCommencementTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Title of a 12(b) registered security.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b

+ Details

Name:

dei_Security12bTitle

Namespace Prefix:

dei_

Data Type:

dei:securityTitleItemType

Balance Type:

Period Type:

duration

- Definition

Name of the Exchange on which a security is registered.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection d1-1

+ Details

Name:

dei_SecurityExchangeName

Namespace Prefix:

dei_

Data Type:

dei:edgarExchangeCodeItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14a

-Subsection 12

+ Details

Name:

dei_SolicitingMaterial

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Trading symbol of an instrument as listed on an exchange.

+ References

No definition available.

+ Details

Name:

dei_TradingSymbol

Namespace Prefix:

dei_

Data Type:

dei:tradingSymbolItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Securities Act

-Number 230

-Section 425

+ Details

Name:

dei_WrittenCommunications

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration