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):

October 7, 2022

Commission File Number: 1-40392

DT Midstream, Inc.

Registrant’s address of principal executiveoffices: 500 Woodward Ave., Suite 2900, Detroit, Michigan 48226-1279

Registrant’s telephone number, including area code: (313) 402-8532

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:

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

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 under the Securities Act (17 CFR 230.405) or Rule 12b-2 under Exchange Act (17 CFR 240.12b-2).

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.  ☐

On October 7, 2022, DT Midstream, Inc. (“DT Midstream”) completed the previously announced acquisition of National Grid’s 26.25% ownership interest in Millennium Pipeline, which brings DT Midstream’s total ownership interest in Millennium Pipeline to 52.50%.

The press release is attached hereto as Exhibit 99.1 and incorporated into this Item 7.01 by reference herein.

In accordance with General Instruction B.2 of Form 8-K, the information in this Current Report on Form 8-K, including Exhibit 99.1, shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth in such a filing.

Forward-Looking Statements:

This Form 8-K contains forward-looking statements that are subject to various assumptions, risks and uncertainties. It should be read in conjunction with the “Cautionary Statement Concerning Forward-Looking Statements” section in DT Midstream’s Form 10-K (which section is incorporated by reference herein), and in conjunction with other SEC reports filed by DT Midstream that discuss important factors that could cause DT Midstream’s actual results to differ materially. DT Midstream expressly disclaims any current intention to update any forward-looking statements contained in this report as a result of new information or future events or developments.

SIGNATURE

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.

Date: October 7, 2022

DT Midstream Closes on Purchase of Additional Ownership inMillennium Pipeline

DETROIT, Oct. 7, 2022 – DT Midstream, Inc. (NYSE: DTM) today announced that it has closed on the $552 million purchase of an additional 26.25% ownership interest in Millennium Pipeline from National Grid.

“The completed acquisition of an additional stake in Millennium Pipeline directly aligns with our strategic investment thesis and accelerates our growth plan*,”* said David Slater, President and CEO.

The transaction was financed with cash on hand and available capacity under the company’s revolving credit facility. DT Midstream’s total ownership in Millennium Pipeline is now 52.50%.

Millennium Pipeline is a 263-mile interstate pipeline, strategically positioned to deliver Northeast Marcellus and Utica gas to utility and power plant markets across New York State and New England. DT Midstream is a founding developer and existing owner in Millennium Pipeline, which has been in service since 2008. The pipeline is also interconnected with the company’s wholly-owned Bluestone Gathering Lateral Pipeline which has upstream connections to its Susquehanna Gathering System.

Advisors

Lazard served as financial advisor and Shearman & Sterling LLP served as legal counsel to DT Midstream.

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About DT Midstream

DT Midstream (NYSE: DTM) is an owner, operator and developer of natural gas interstate and intrastate pipelines, storage and gathering systems, compression, treatment and surface facilities. The company transports clean natural gas for utilities, power plants, marketers, large industrial customers and energy producers across the Southern, Northeastern and Midwestern United States and Canada. The Detroit-based company offers a comprehensive, wellhead-to-market array of services, including natural gas transportation, storage and gathering. DT Midstream is transitioning towards net zero greenhouse gas emissions by 2050, including a plan of achieving 30% of its carbon emissions reduction in the next decade. For more information, please visit the DT Midstream website at www.dtmidstream.com.

Forward Looking Statements

This release contains statements which, to the extent they are not statements of historical or present fact, constitute “forward-looking statements” under the securities laws. These forward-looking statements are intended to provide management’s current expectations or plans for our future operating and financial performance, business prospects, outcomes of regulatory proceedings, market conditions, and other matters, based on what we believe to be reasonable assumptions and on information currently available to us.

Forward-looking statements can be identified by the use of words such as “believe,” “expect,” “expectations,” “plans,” “strategy,” “prospects,” “estimate,” “project,” “target,” “anticipate,” “will,” “should,” “see,” “guidance,” “outlook,” “confident” and other words of similar meaning. The absence of such words, expressions or statements, however, does not mean that the statements are not forward-looking. In particular, express or implied statements relating to future earnings, cash flow, results of operations, uses of cash, tax rates and other measures of financial performance, future actions, conditions or events, potential future plans, strategies or transactions of DT Midstream, and other statements that are not historical facts, are forward-looking statements.

Forward-looking statements are not guarantees of future results and conditions, but rather are subject to numerous assumptions, risks, and uncertainties that may cause actual future results to be materially different from those contemplated, projected, estimated, or budgeted. Many factors may impact forward-looking statements of DT Midstream including, but not limited to, the following: changes in general economic conditions; competitive conditions in our industry; global supply chain disruptions; actions taken by third-party operators, processors, transporters and gatherers; changes in expected production from Southwestern Energy Company and/or its affiliates, Antero Resources Corporation and/or its affiliates and other third parties in our areas of operation; demand for natural gas gathering, transmission, storage, transportation and water services; the availability and price of natural gas to the consumer compared to the price of alternative and competing fuels; competition from the same and alternative energy sources; our ability to successfully implement our business plan; our ability to complete organic growth projects on time and on budget; our ability to complete acquisitions; the price and availability of debt and equity financing; restrictions in our existing and any future credit facilities and indentures; energy efficiency and technology trends; changing laws regarding cyber security and data privacy and any cyber security threat or event; operating hazards, environmental risks, and other risks incidental to gathering, storing and transporting natural gas; changes in environmental laws, regulations or enforcement policies, including laws and regulations relating to climate change and greenhouse gas emissions; natural disasters, adverse weather conditions, casualty losses and other matters beyond our control; the impact of outbreaks of illnesses, epidemics and pandemics, including the COVID-19 pandemic and the economic effects of the pandemic; the ongoing conflict between Russia and Ukraine, including resulting commodity price volatility and risk of cyber-based attacks; increases in interest rates; the impact of inflation on our business; labor relations and markets, including the ability to attract, hire and retain key employee and contract personnel; large customer defaults; changes in tax status, as well as changes in tax rates and regulations; intent to develop low carbon business opportunities and deploy greenhouse gas reducing technologies; the effects of existing and future laws and governmental regulations; changes in insurance markets impacting costs and the level and types of coverage available; the timing and extent of changes in commodity prices; the suspension, reduction or termination of our customers’ obligations under our commercial agreements; disruptions due to equipment interruption or failure at our facilities, or third-party facilities on which our business is dependent; the effects of future litigation; the qualification of the spin-off of DT Midstream from DTE Energy ("the Spin-Off") as a tax-free distribution; the allocation of tax attributes from DTE Energy in accordance with the agreement that governs the respective rights, responsibilities and obligations of DTE Energy and DT Midstream after the Spin-Off with respect to all tax matters; our ability to achieve the benefits that we expect to achieve as an independent publicly traded company; and the risks described in our Annual Report on Form 10-K for the year ended December 31, 2021 and our reports and registration statements filed from time to time with the SEC.

The above list of factors is not exhaustive. New factors emerge from time to time. We cannot predict what factors may arise or how such factors may cause actual results to vary materially from those stated in forward-looking statements, see the discussion under the section entitled “Risk Factors” in our Annual Report for the year ended December 31, 2021, filed with the SEC on Form 10-K and any other reports filed with the SEC. Given the uncertainties and risk factors that could cause our actual results to differ materially from those contained in any forward-looking statement, you should not put undue reliance on any forward-looking statements.

Any forward-looking statements speak only as of the date on which such statements are made. We are under no obligation to, and expressly disclaim any obligation to, update or alter our forward-looking statements, whether as a result of new information, subsequent events or otherwise.

Investor Relations

Todd Lohrmann, DT Midstream, 313.774.2424

investor_relations@dtmidstream.com