# EDGAR Filing Document

**Accession Number:** 0001842022
**File Stem:** 0001140361-26-011280
**Filing Date:** 2026-3
**Character Count:** 232557
**Document Hash:** c8e5131a2a3e1e8748188b4f8dc5829a
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001140361-26-011280.hdr.sgml**: 20260326

**ACCESSION NUMBER**: 0001140361-26-011280

**CONFORMED SUBMISSION TYPE**: DEF 14A

**PUBLIC DOCUMENT COUNT**: 46

**CONFORMED PERIOD OF REPORT**: 20260505

**FILED AS OF DATE**: 20260326

**DATE AS OF CHANGE**: 20260326

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** DT Midstream, Inc.
- **CENTRAL INDEX KEY:** 0001842022
- **STANDARD INDUSTRIAL CLASSIFICATION:** NATURAL GAS TRANSMISSION [4922]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 382663964
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEF 14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-40392
- **FILM NUMBER:** 26794388

**BUSINESS ADDRESS:**
- **STREET 1:** 500 WOODWARD AVENUE
- **STREET 2:** SUITE 2900
- **CITY:** DETROIT
- **STATE:** MI
- **ZIP:** 48226-1279
- **BUSINESS PHONE:** 313-402-8532

**MAIL ADDRESS:**
- **STREET 1:** 500 WOODWARD AVENUE
- **STREET 2:** SUITE 2900
- **CITY:** DETROIT
- **STATE:** MI
- **ZIP:** 48226-1279

?xml version='1.0' encoding='ASCII'?

#### **TABLE OF CONTENTS**

### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

### SCHEDULE 14A

#### Proxy Statement Pursuant to Section 14(a) of the Securities

#### Exchange Act of 1934 (Amendment No.)
&nbsp;&nbsp;&nbsp;&nbsp;☒ Filed by the Registrant

☐ Filed by a Party other than the Registrant

Check the appropriate box:

☐ Preliminary Proxy Statement

☐ **Confidential, For Use of the Commission Only (as permitted by Rule 14a-6(e)(2))**

☒ Definitive Proxy Statement

☐ Definitive Additional Materials

☐ Soliciting Material Pursuant to §240.14a-12

## DT MIDSTREAM, INC.
*(Name of Registrant as Specified in Its Charter)* 

*(Name of Person(s) Filing Proxy Statement, if Other than the Registrant)* 

---

| | |
|:---|:---|
| Payment of Filing Fee (Check the appropriate box):  | Payment of Filing Fee (Check the appropriate box):  |
| ☒ | No fee required.  |
| ☐  | Fee paid previously with preliminary materials.  |
| ☐  | Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11. |

---

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#### **TABLE OF CONTENTS**
&nbsp;&nbsp;&nbsp;&nbsp;![](logo_dtmidstream.jpg)<br>

DT Midstream, Inc.

500 Woodward Ave, Suite 2900

Detroit, Michigan 48226-1279

Dear Stockholder:

You are invited to attend the 2026 Annual Meeting of Stockholders (the "Annual Meeting") of DT Midstream, Inc. ("DT Midstream", the "Company", "DTM", "we" or "our"), which will be held on May 5, 2026 at 10:00 a.m., Eastern Time as a virtual meeting. You will be able to attend the meeting, vote and submit your questions via the Internet by visiting www.virtualshareholdermeeting.com/DTM2026 and entering the control number included on your proxy card. You will not be able to attend the virtual Annual Meeting in person.

We are proud of our achievements in 2025, which include:

&nbsp;&nbsp;&nbsp;&nbsp;• Reaching a final investment decision on the Guardian Pipeline G3 expansion, which will increase Guardian's capacity by approximately 40% and is supported by long-term negotiated rate precedent agreements with investment grade utility customers;

&nbsp;&nbsp;&nbsp;&nbsp;• Achieving an investment grade credit rating with all three major credit rating agencies; and

&nbsp;&nbsp;&nbsp;&nbsp;• Placing the Haynesville System (LEAP) Phase 4 expansion project into service.

Attached to this letter are a Notice of Annual Meeting of Stockholders and proxy statement, which describe the business to be conducted at the Annual Meeting.

**YOUR VOTE IS IMPORTANT TO US. Whether you own a few shares or many, and whether or not you plan to attend the Annual Meeting, we urge you to promptly submit your vote via the Internet, telephone or mail.** 

On behalf of the Board of Directors and management, I would like to express our appreciation for your continued support.

Very truly yours,

---

| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;![](sig_dslater.jpg)<br>| ![](sig_stevebaker.jpg)<br>|
| David Slater<br>Executive Chairman and Chief Executive Officer | Stephen Baker <br>Lead Independent Director |

---

March 26, 2026

------

&nbsp;&nbsp;&nbsp;&nbsp;![](logo_dtmidstream.jpg)<br>

## Notice of Annual Meeting of Stockholders of DT Midstream, Inc.

---

| | | |
|:---|:---|:---|
| ![](ny20058512x1_meeting.jpg)<br>**Date:**<br>May 5, 2026  | ![](ny20058512x1_time.jpg)<br>**Time:** <br>10:00 a.m., Eastern Time  | ![](ny20058512x1_location.jpg)<br>**Place:** <br>Online at www.virtualshareholdermeeting.com<br>/DTM2026 |

---

The Annual Meeting will be held as a virtual meeting via live webcast on the Internet. Because the meeting is completely virtual and being conducted via the Internet, stockholders will not be able to attend the meeting in person. You will be able to attend the Annual Meeting, vote and submit your questions on the day of the meeting via the Internet by visiting www.virtualshareholdermeeting.com/DTM2026 and entering the control number included on your proxy card.

#### Items of Business:
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• To elect seven directors from the nominees described in the proxy statement;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• To ratify the appointment of PricewaterhouseCoopers LLP ("PwC") as our independent registered public accounting firm for fiscal year ending December 31, 2026;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• To approve, on an advisory (non-binding) basis, the compensation of the Company's Named Executive Officers;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• To vote on a stockholder proposal, if properly presented at the Annual Meeting; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• To transact other business that may properly come before the Annual Meeting, or any adjournments or postponements thereof.

#### Record Date:
The Board of Directors set March 11, 2026 as the record date for the Annual Meeting (the "Record Date"). Only stockholders of record at the close of business on the Record Date are entitled to receive notice of, and to vote at, the Annual Meeting.

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#### **TABLE OF CONTENTS**
&nbsp;&nbsp;&nbsp;&nbsp;![](logo_dtmidstream.jpg)<br>

#### Voting:
**YOUR VOTE IS VERY IMPORTANT. Whether or not you plan to virtually attend the Annual Meeting, we encourage you to read the proxy statement and submit your proxy or voting instructions as soon as possible. You can vote your shares electronically via the Internet, by telephone or by completing and returning the proxy card or voting instruction card if you requested paper proxy materials. Voting instructions are printed on your proxy card and included in the accompanying proxy statement. You can revoke a proxy at any time prior to its exercise at the Annual Meeting by following the instructions in the proxy statement.**

**Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting: Our annual report on Form 10-K for the year ended December 31, 2025 and the 2026 Proxy Statement are available free of charge at: www.proxyvote.com.** 

By order of the Board of Directors,

![](sig_wellis.jpg)

**Wendy Ellis**

Executive Vice President, General Counsel and Corporate Secretary

March 26, 2026

You may contact the Company's proxy solicitor for additional information at:

Sodali LLC

333 Ludlow Street, 5<sup>th</sup> Floor, South Tower

Stamford, CT 06902

Individuals call toll-free (800) 662-5200

Banks and brokers call (203) 658-9400

Email: DTM.info@investor.sodali.com

------

#### **TABLE OF CONTENTS**
&nbsp;&nbsp;&nbsp;&nbsp;![](logo_dtmidstream.jpg)<br>

## **Table of Contents**

---

| | |
|:---|:---|
| **[General Information](#tGI1)** | &nbsp;&nbsp;&nbsp;**[1](#tGI1)** |
| &nbsp;&nbsp;&nbsp;&nbsp;[The Annual Meeting](#tAM2) | &nbsp;&nbsp;&nbsp;[1](#tAM2) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Voting Rights](#tVR3) | &nbsp;&nbsp;&nbsp;[1](#tVR3) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Items of Business and Voting Recommendation of the Board](#tIB4) | &nbsp;&nbsp;&nbsp;[2](#tIB4) |
| &nbsp;&nbsp;&nbsp;&nbsp;[How to Vote](#tHV6) | &nbsp;&nbsp;&nbsp;[2](#tHV6) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Revoking a Proxy](#tRP7) | &nbsp;&nbsp;&nbsp;[3](#tRP7) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Solicitation](#tS8) | &nbsp;&nbsp;&nbsp;[3](#tS8) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Votes Required](#tVR9) | &nbsp;&nbsp;&nbsp;[3](#tVR9) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Quorum](#tQ10) | &nbsp;&nbsp;&nbsp;[4](#tQ10) |
| **[Board of Directors](#tBD11)** | &nbsp;&nbsp;&nbsp;**[5](#tBD11)** |
| &nbsp;&nbsp;&nbsp;&nbsp;[Our Board of Directors](#tOBD12) | &nbsp;&nbsp;&nbsp;[6](#tOBD12) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Board Meeting Quorum Requirements](#tBMQ13) | &nbsp;&nbsp;&nbsp;[11](#tBMQ13) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Director Independence and Categorical Standards](#tDIC14) | &nbsp;&nbsp;&nbsp;[11](#tDIC14) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Executive Sessions](#tES15) | &nbsp;&nbsp;&nbsp;[12](#tES15) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Compensation Committee Interlocks and Insider Participation](#tCCI16) | &nbsp;&nbsp;&nbsp;[12](#tCCI16) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Director Continuing Education and Orientation](#tDCEO) | &nbsp;&nbsp;&nbsp;[12](#tDCEO) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Committees of the Board](#tCB17) | &nbsp;&nbsp;&nbsp;[12](#tCB17) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Director Compensation](#tDC18) | &nbsp;&nbsp;&nbsp;[14](#tDC18) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Director Compensation Table for 2025](#tDCT19) | &nbsp;&nbsp;&nbsp;[15](#tDCT19) |
| **[Corporate Governance](#tCG20)** | &nbsp;&nbsp;&nbsp;**[16](#tCG20)** |
| &nbsp;&nbsp;&nbsp;&nbsp;[Our Commitment to Sound Corporate Governance](#tOCS21) | &nbsp;&nbsp;&nbsp;[16](#tOCS21) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Human Capital Resources](#tHUCR) | &nbsp;&nbsp;&nbsp;[16](#tHUCR) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Health and Safety](#tHEAS) | &nbsp;&nbsp;&nbsp;[17](#tHEAS) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Compensation and Benefits](#tCABD) | &nbsp;&nbsp;&nbsp;[17](#tCABD) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Criteria for Board Membership](#tCBM22) | &nbsp;&nbsp;&nbsp;[17](#tCBM22) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Board Leadership Structure](#tBLS23) | &nbsp;&nbsp;&nbsp;[18](#tBLS23) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Assessment of Board and Committee Performance](#tABC24) | &nbsp;&nbsp;&nbsp;[19](#tABC24) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Terms of Office](#tTO25) | &nbsp;&nbsp;&nbsp;[19](#tTO25) |
| &nbsp;&nbsp;&nbsp;&nbsp;[The Board's Role in Strategy and Succession Planning](#tBRSSP) | &nbsp;&nbsp;&nbsp;[19](#tBRSSP) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Board Risk Oversight Functions](#tBRO26) | &nbsp;&nbsp;&nbsp;[20](#tBRO26) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Procedures for Approval of Related Party Transactions](#tPAR27) | &nbsp;&nbsp;&nbsp;[20](#tPAR27) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Communications with the Board](#tCB28) | &nbsp;&nbsp;&nbsp;[21](#tCB28) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Insider Trading, Anti-Hedging and Anti-Pledging Policies](#tAHP29) | &nbsp;&nbsp;&nbsp;[21](#tAHP29) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Delinquent Section 16(a) Reports](#tDSR30) | &nbsp;&nbsp;&nbsp;[22](#tDSR30) |
| **[PROPOSAL 1 — Election of Directors](#tPED31)** | &nbsp;&nbsp;&nbsp;**[23](#tPED31)** |
| &nbsp;&nbsp;&nbsp;&nbsp;[Vote Required](#tVOT32) | &nbsp;&nbsp;&nbsp;[23](#tVOT32) |
| **[PROPOSAL 2 — Ratification of Appointment of Independent Registered Public Accounting Firm](#tPRA33)** | &nbsp;&nbsp;&nbsp;**[24](#tPRA33)** |
| &nbsp;&nbsp;&nbsp;&nbsp;[Vote Required](#tVR34) | &nbsp;&nbsp;&nbsp;[25](#tVR34) |

---

---

| | | |
|:---|:---|:---|
| DT Midstream | **i** | 2026 Proxy Statement |

---

------

#### **TABLE OF CONTENTS**
&nbsp;&nbsp;&nbsp;&nbsp;![](logo_dtmidstream.jpg)<br>

---

| | |
|:---|:---|
| **[Audit Committee Report](#tACR35)** | &nbsp;&nbsp;&nbsp;**[26](#tACR35)** |
| **[PROPOSAL 3 — Approval, on an Advisory (Non-Binding) Basis, of the Compensation of our Named Executive Officers](#tPROP3)** | &nbsp;&nbsp;&nbsp;**[27](#tPROP3)** |
| **[PROPOSAL 4 — Stockholder Proposal on Shareholder Right to Act by Written Consent](#tPROP4)** | &nbsp;&nbsp;&nbsp;**[28](#tPROP4)** |
| &nbsp;&nbsp;&nbsp;&nbsp;[Vote Required](#tPROP4VR) | &nbsp;&nbsp;&nbsp;[29](#tPROP4VR) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Board Response](#tPROP4BR) | &nbsp;&nbsp;&nbsp;[29](#tPROP4BR) |
| **[Management](#tM38)** | &nbsp;&nbsp;&nbsp;**[31](#tM38)** |
| &nbsp;&nbsp;&nbsp;&nbsp;[Executive Officers](#tEO39) | &nbsp;&nbsp;&nbsp;[31](#tEO39) |
| **[Executive Compensation](#tEC40)** | &nbsp;&nbsp;&nbsp;**[33](#tEC40)** |
| &nbsp;&nbsp;&nbsp;&nbsp;[Compensation Discussion and Analysis](#tCDA41) | &nbsp;&nbsp;&nbsp;[33](#tCDA41) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Executive Summary](#tES42) | &nbsp;&nbsp;&nbsp;[33](#tES42) |
| &nbsp;&nbsp;&nbsp;&nbsp;[2025 Advisory Vote to Ratify Named Executive Officers' Compensation](#tAVT43) | &nbsp;&nbsp;&nbsp;[34](#tAVT43) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Pay-For-Performance Alignment](#tPPA43) | &nbsp;&nbsp;&nbsp;[34](#tPPA43) |
| &nbsp;&nbsp;&nbsp;&nbsp;[What We Do and What We Don't Do](#tWWD44) | &nbsp;&nbsp;&nbsp;[35](#tWWD44) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Role of the Organization and Compensation Committee](#tROCC45) | &nbsp;&nbsp;&nbsp;[35](#tROCC45) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Independent Review of Compensation Program](#tIRCP46) | &nbsp;&nbsp;&nbsp;[36](#tIRCP46) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Management's Role](#tMR47) | &nbsp;&nbsp;&nbsp;[36](#tMR47) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Executive Compensation Peer Group Assessment](#tCPGA48) | &nbsp;&nbsp;&nbsp;[36](#tCPGA48) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Key Components of Executive Compensation](#tKCEC49) | &nbsp;&nbsp;&nbsp;[37](#tKCEC49) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Stock Ownership Policy](#tSOP51) | &nbsp;&nbsp;&nbsp;[41](#tSOP51) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Compensation Clawback Policy](#tCCP52) | &nbsp;&nbsp;&nbsp;[42](#tCCP52) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Internal Revenue Code Considerations](#tIRCC53) | &nbsp;&nbsp;&nbsp;[42](#tIRCC53) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Compensation Committee Report](#tCCR54) | &nbsp;&nbsp;&nbsp;[42](#tCCR54) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Summary Compensation Table](#tSCT55) | &nbsp;&nbsp;&nbsp;[43](#tSCT55) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Grants of Plan-Based Awards](#tGPB56) | &nbsp;&nbsp;&nbsp;[45](#tGPB56) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Outstanding Equity Awards at Fiscal Year-End](#tOEA57) | &nbsp;&nbsp;&nbsp;[46](#tOEA57) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Stock Awards Vested](#tSAV) | &nbsp;&nbsp;&nbsp;[47](#tSAV) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Pay Versus Performance](#tPVP23) | &nbsp;&nbsp;&nbsp;[48](#tPVP23) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Post-Employment Benefits](#tPB59) | &nbsp;&nbsp;&nbsp;[53](#tPB59) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Potential Payments Upon Termination of Employment](#tPTC60) | &nbsp;&nbsp;&nbsp;[54](#tPTC60) |
| &nbsp;&nbsp;&nbsp;&nbsp;[Chief Executive Officer Pay Ratio](#tCEOPR) | &nbsp;&nbsp;&nbsp;[57](#tCEOPR) |
| **[Security Ownership of Certain Beneficial Owners and Management](#tSOC61)** | &nbsp;&nbsp;&nbsp;**[58](#tSOC61)** |
| &nbsp;&nbsp;&nbsp;&nbsp;[Security Ownership of Certain Beneficial Owners](#tCBO62) | &nbsp;&nbsp;&nbsp;[59](#tCBO62) |
| **[Certain Relationships and Related Party Transactions](#tCRR63)** | &nbsp;&nbsp;&nbsp;**[60](#tCRR63)** |
| **[Stockholder Proposals for the 2027 Annual Meeting of Stockholders](#tSPA66)** | &nbsp;&nbsp;&nbsp;**[61](#tSPA66)** |
| **[Householding](#tH67)** | &nbsp;&nbsp;&nbsp;**[61](#tH67)** |
| **[Annual Report on Form 10-K](#tARF68)** | &nbsp;&nbsp;&nbsp;**[61](#tARF68)** |
| **[Other Matters](#tOM69)** | &nbsp;&nbsp;&nbsp;**[62](#tOM69)** |

---

---

| | | |
|:---|:---|:---|
| DT Midstream | **ii** | 2026 Proxy Statement |

---

------

## GENERAL INFORMATION

#### The Annual Meeting
The 2026 Annual Meeting of Stockholders (the "Annual Meeting") of DT Midstream, Inc. ("DT Midstream," "DTM", the "Company," "we," "us" and "our") will take place on May 5, 2026 at 10:00 a.m., Eastern Time.

The Annual Meeting will be a completely virtual meeting of stockholders held solely through an audio webcast live over the Internet. There will be no physical meeting location. The Board believes that holding the Annual Meeting in a virtual format provides convenient access for all of our stockholders to attend with fewer logistical issues and less expense than an in-person meeting, supporting an efficient use of the Company's resources. Please go to www.virtualshareholdermeeting.com/DTM2026 for instructions on how to attend and participate in the Annual Meeting. Any stockholder may attend and listen live to the webcast of the Annual Meeting over the Internet at such website. Stockholders as of the Record Date may vote and submit questions while attending the Annual Meeting via the Internet by following the instructions listed on your proxy card. The webcast starts at 10:00 a.m., Eastern Time, on May 5, 2026. We encourage you to access the Annual Meeting prior to the start time.

You may vote by telephone, over the Internet or by completing, signing, dating and returning your proxy card as soon as possible in the enclosed postage prepaid envelope.

#### Voting Rights
***Stockholder of Record. If your shares are registered directly in your name with our transfer agent, Equiniti Trust Company, you are considered the "stockholder of record," with respect to those shares. As a stockholder of record, you may vote at the Annual Meeting or vote by proxy. Whether or not you plan to attend the Annual Meeting virtually, we urge you to vote on the Internet or by phone or mail as instructed in the proxy card to ensure your vote is counted.***

***Beneficial Owner. If your shares are held in a stock brokerage account or by a bank or other nominee, you are considered the "beneficial owner" of shares held in street name. The organization holding your account is considered the stockholder of record for purposes of voting at the Annual Meeting. As a beneficial owner, you have the right to direct your broker, bank, or other agent on how to vote the shares in your account. Your brokerage firm, bank, or other agent will not be able to vote in the election of directors unless they have your voting instructions, so it is very important that you indicate your voting instructions to the institution holding your shares. As a beneficial owner of shares, you are also invited to attend the Annual Meeting virtually. However, since you are not the stockholder of record, you may not vote your shares at the Annual Meeting unless you request and obtain a valid proxy from your broker, bank, or other agent.***

Only holders of the Company's common stock as recorded in our stock register at the close of business on March 11, 2026, may vote at the Annual Meeting. On March 11, 2026, there were 102,014,118 shares of common stock issued and outstanding. Each share of common stock is entitled to one vote per share on any matter submitted to a vote of our stockholders.

---

| | |
|:---|:---|
| DT Midstream<sub>1</sub> | 2026 Proxy Statement |

---

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#### **TABLE OF CONTENTS**

#### Items of Business and Voting Recommendation of the Board

#### Board Proposals

---

| | | |
|:---|:---|:---|
| **Item** | **Board Recommendation** | **Rationale**  |
| 1. <br>Elect seven directors named in this proxy statement<br>| Vote **FOR** each director nominee | The Board believes that each of the seven nominees possesses qualifications and attributes that are critical for effective oversight of the Company and are directly relevant to the Company's business, strategy, and operations.  |
| 2. <br>Ratify the appointment of the independent accounting firm<br>| Vote **FOR** | The Board believes that it is in the best interests of the Company and its stockholders to retain PwC as the Company's independent registered public accounting firm for 2026.  |
| 3. <br>Approve, on an advisory basis, the compensation of the Company's Named Executive Officers<br>| Vote **FOR** | The Board believes that our compensation programs support our business model, objectives and values described in detail in our "Compensation Discussion and Analysis" in this proxy statement. |

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#### Stockholder Proposal

---

| | | |
|:---|:---|:---|
| 4. <br>Approve a proposal that the Board of Directors take the necessary steps to permit written consent by stockholders<br>| Vote **AGAINST** | The Board believes that Proposal 4 is not in the best interests of stockholders because (i) action by written consent could allow a small group of stockholders to unilaterally approve actions without support from the broader DTM stockholder base and (ii) stockholders existing ability to call special meetings, combined with the proxy access right provided in our Bylaws, are sufficient and appropriate mechanisms for stockholder action. |

---

The Company's Board of Directors ("Board of Directors" or the "Board") knows of no additional matters to be presented at the Annual Meeting. If any other matter is properly brought before the Annual Meeting, shares represented by all proxies received by the Board will be voted with respect thereto in accordance with the judgment of the persons appointed as proxies.

#### How to Vote
For Proposal 1, you may vote "For All", "Withhold All", "For All Except" or abstain from voting with respect to each nominee to the Board. For each of Proposal 2, Proposal 3 and Proposal 4, you may vote "For", "Against" or abstain from voting.

If you are a stockholder of record as of the Record Date, you may vote during the Annual Meeting by (i) attending the Annual Meeting virtually at www.virtualshareholdermeeting.com/DTM2026 and following the instructions, or (ii) by proxy (x) over the Internet at www.proxyvote.com, (y) by phone by calling 1-800-690-6903 or (z) by signing, dating and returning the proxy card in the enclosed envelope. Whichever method you use, giving us your proxy means you authorize us to vote your shares at the meeting in the manner you direct. If you submit a proxy but do not specify how to vote, the Company representatives named in the proxy card will vote your shares in favor of the director nominees identified in this proxy statement for Proposal 1, in favor of approving the ratification of the appointment of PwC as our independent registered public accounting firm for fiscal year ending December 31, 2026 for Proposal 2, in favor of approving, on an advisory (non-binding) basis, the compensation of the Company's Named Executive Officers for Proposal 3 and against Proposal 4, if properly presented at the Annual Meeting.

Whether or not you plan to attend the Annual Meeting virtually, we urge you to vote by proxy to ensure your vote is counted. You may still attend the Annual Meeting virtually and vote during the Annual Meeting if you have already voted by proxy and want to change how you previously voted.

---

| | |
|:---|:---|
| DT Midstream<sub>2</sub> | 2026 Proxy Statement |

---

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#### **TABLE OF CONTENTS**
If you are a beneficial owner and hold shares through another party, such as a bank or brokerage firm, you may receive materials from them asking how you want to vote. Simply follow the instructions to ensure that your vote is counted. To vote at the Annual Meeting you must obtain a valid proxy from your broker, bank, or other agent. Follow the instructions from your broker, bank or other agent included with the notice, or contact your broker, bank, or other agent.

You may receive more than one set of proxy materials depending on how you hold your shares. Please vote all of your shares. To ensure that all of your shares are voted, for each set of proxy materials, please submit your proxy by phone, via the Internet or by signing, dating and returning the enclosed proxy card in the enclosed envelope.

#### Revoking a Proxy
A stockholder of record may revoke any proxy which is not irrevocable by submitting a new proxy bearing a later date, by voting by telephone or over the Internet or by delivering to the Corporate Secretary of the Company a revocation of the proxy in writing so that it is received by the Company at 500 Woodward Ave, Suite 2900, Detroit, Michigan 48226-1279 prior to the Annual Meeting.

A proxy shall be irrevocable if it states that it is irrevocable and if, and only as long as, it is coupled with an interest sufficient in law to support an irrevocable power.

If you are a beneficial owner, you may revoke your proxy by submitting new instructions to your broker, bank, or other agent, or if you have received a proxy from your broker, bank, or other agent giving you the right to vote your shares at the Annual Meeting, by attending the meeting virtually and voting during the meeting.

#### Solicitation
These proxy materials are being provided in connection with the solicitation of proxies by the Company and are first being sent to stockholders on or about March 26, 2026. We have engaged Sodali & Co., which we refer to as "Sodali", to assist in the solicitation of proxies for the Annual Meeting. We have agreed to pay Sodali a fee of $14,000. We will also reimburse Sodali for reasonable out-of-pocket expenses and will indemnify Sodali and its affiliates against certain claims, liabilities, losses, damages and expenses. In addition to these mailed proxy materials, our directors and officers may also solicit proxies in person, by telephone or by other means of communication. These parties will not be paid any additional compensation for soliciting proxies. We may also reimburse brokerage firms, banks and other agents for the cost of forwarding proxy materials to beneficial owners.

#### Votes Required
The vote required for Proposal 1 for the election of directors by stockholders shall be the plurality of the votes cast with respect to a director nominee. This means that the director nominees receiving the highest number of affirmative 'for' votes will be elected. Abstentions and "broker non-votes" (as defined below) will not count as votes 'for' a nominee.

Approval of Proposal 2 requires the affirmative vote of the holders of a majority of the voting power of the Company's common stock present or represented by proxy at the Annual Meeting and entitled to vote on the subject matter. For Proposal 2, an abstention will have the same effect as a vote against the proposal because an abstention represents a share considered present and entitled to vote.

Approval of Proposal 3 requires the affirmative vote of the holders of a majority of the voting power of the Company's common stock present or represented by proxy at the Annual Meeting and entitled to vote on the subject matter. For Proposal 3, an abstention will have the same effect as a vote against the proposal because an abstention represents a share entitled to vote. Proposal 3 is advisory only and will not be binding on the Company or the Board. The Organization and Compensation Committee ("O&C Committee") values the opinions of all of our stockholders and will take into account the outcome of the vote when considering future executive compensation arrangements.

Approval of Proposal 4 requires the affirmative vote of the holders of a majority of the voting power of the Company's common stock present or represented by proxy at the Annual Meeting and entitled to vote on the subject matter. For Proposal 4, an abstention will have the same effect as a vote against the proposal because an abstention represents a share entitled to vote.

If your shares are held by a broker, the broker will ask you how you want your shares to be voted. If you give the broker instructions, your shares must be voted as you direct. If you do not give instructions for Proposal 2 to ratify selection of the Company's independent registered public accounting firm, the broker may vote your shares at its discretion. For the remaining

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| DT Midstream<sub>3</sub> | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**
proposals, including the election of directors, the broker cannot vote your shares at all. When that happens, it is called a "broker non-vote." Broker non-votes are counted in determining the presence of a quorum at the meeting, but they will have no effect on the voting for Proposal 3 and Proposal 4 because they do not represent shares present and entitled to vote.

#### Quorum
In order to carry on the business of the meeting, we must have a quorum. This means that the holders of a majority of the voting power of the Company's common stock issued and outstanding and entitled to vote at the Annual Meeting, present or represented by proxy, shall constitute a quorum at the Annual Meeting. Once a quorum is present to organize a meeting, it shall not be broken by the subsequent withdrawal of any stockholders.

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| DT Midstream<sub>4</sub> | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**

## BOARD OF DIRECTORS
![](ny20038388x3_directors.jpg)

![](ny20038388x3_skills1.jpg)

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| DT Midstream<sub>5</sub> | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**

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| **Name** | **Energy/**<br>**Midstream** | **Finance/**<br>**Accounting** | **Regulatory/**<br>**Public Affairs** | **Public** <br>**Company** <br>**Board** | **Public** <br>**Company** <br>**Executive**  |
| David Slater | X | X | X | X | X  |
| Angela Archon |  |  | X | X | X |
| Stephen Baker | X | X | X |  | X |
| Elaine Pickle | X | X | X | X |  |
| Robert Skaggs, Jr. | X | X | X | X | X  |
| Peter Tumminello | X | X | X |  | X |
| Dwayne Wilson | X | X | X | X | X |

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![](ny20058512x1_addlinfo.jpg)

#### Our Board of Directors
The following sets forth certain information, as of March 11, 2026, for each of our directors. Each person named below became a director of the Company on July 1, 2021, the date DT Midstream was separated from DTE Energy Company ("DTE Energy") in a spin-off (the "Spin-Off") and began operations as a stand-alone publicly traded company with the exception of David Slater who became a director of the Company on June 3, 2021, Dwayne Wilson who became a director of the Company on June 16, 2021 and Angela Archon who became a director of the Company on March 7, 2023. Each of our directors is a nominee for election as a director at this Annual Meeting. Reference in this proxy statement to Chairman shall include reference to the Executive Chairman.

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| **Name** | **Age** | **Position(s)**  |
| **David Slater** | 60 | Director, Executive Chairman and Chief Executive Officer  |
| **Angela Archon** | 65 | Director  |
| **Stephen Baker** | 62 | Director, Lead Independent Director  |
| **Elaine Pickle** | 61 | Director  |
| **Robert Skaggs, Jr.** | 71 | Director  |
| **Peter Tumminello** | 63 | Director  |
| **Dwayne Wilson** | 67 | Director |

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| DT Midstream<sub>6</sub> | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**

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| ![](ny20058512x1_slater.jpg)<br>**David Slater**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](edge20001484x999_bulletarrow.jpg)Mr. Slater became a director of our Company on June 3, 2021 and became President and Chief Executive Officer of our Company on May 6, 2021. Mr. Slater was appointed Executive Chairman of the Board of the Company on January 28, 2026. Mr. Slater resigned from the role of President effective January 28, 2026 and remains the Company's Chief Executive Officer. Mr. Slater has over 30 years of experience in the energy industry, where he has worked in both commercial business development and operational roles. Prior to the Spin-Off, Mr. Slater served as president and chief operating officer of DTE Energy's Midstream Business ("DTE Energy Midstream Business") and had been a member of DTE Energy's executive leadership team since 2015. He joined DTE Energy in 2011 as senior vice president of the Gas Storage & Pipelines division of DTE Energy ("GSP"), before being promoted to executive vice president of the DTE Energy Midstream Business/GSP in 2014.  |
| ![](ny20058512x1_slater.jpg)<br>**David Slater**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](edge20001484x999_bulletarrow.jpg)Prior to joining DTE Energy, Mr. Slater held various senior management positions at Goldman Sachs, Nexen Marketing USA Inc., a top 10 North American energy merchant, Engage Energy US, L.P., an energy merchant, and Union Gas Ltd., a gas utility in Ontario. Mr. Slater serves on the boards of the Millennium Pipeline, the Vector Pipeline, the NEXUS Gas Transmission Pipeline and the Interstate Natural Gas Association of America, where he serves on the compensation and dues committee. Mr. Slater recently served as the chair at the Interstate Natural Gas Association of America. Mr. Slater previously served as a board member of Metalore Resources, Inc., which was a publicly traded company. Mr. Slater earned a Master's degree in Business Administration and an honours degree in business commerce from the University of Windsor. Mr. Slater also is a National Association of Corporate Directors ("NACD") Certified Director.  |
| ![](ny20058512x1_slater.jpg)<br>**David Slater**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](edge20001484x999_bulletarrow.jpg)We believe that Mr. Slater's business, operational and management expertise, including his specific experience serving as president and chief operating officer of the DTE Energy Midstream Business and his experience serving on the boards of directors of the Millennium Pipeline, the Vector Pipeline and the NEXUS Gas Transmission Pipeline, provide him with the necessary experience, qualifications and skills to serve as a director, Executive Chairman, and Chief Executive Officer of DT Midstream. |

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| ![](ny20058512x1_aarchon.jpg)<br>**Angela Archon**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](edge20001484x999_bulletarrow.jpg)Ms. Archon became a director of our Company on March 7, 2023. Ms. Archon's career includes over 30 years at International Business Machines ("IBM") where she held various global executive leadership roles in strategy, operations, IT systems, business development and supply chain management. Prior to her retirement in 2018, she held the position of Chief Operating Officer and Vice President, Transformation, in IBM's Watson Health division.  |
| ![](ny20058512x1_aarchon.jpg)<br>**Angela Archon**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](edge20001484x999_bulletarrow.jpg)Ms. Archon also has significant public board experience. She currently serves on the board of Spirax Group plc (LSE: SPXSY), which is a global engineering and manufacturing company providing thermal energy and fluid technology solutions, and previously served on the boards of Switch, Inc. (NYSE: SWCH) and H&R Block (NYSE: HRB). Ms. Archon also serves on the board of Stewardship Trustees of CommonSpirit Health, the nation's largest Catholic healthcare system. Ms. Archon previously served on the board of the NACD, Texas TriCities Chapter from 2020 through 2024. Ms. Archon holds two degrees from the University of Texas at Austin, a Bachelor of Science degree in Chemical Engineering and a Master of Science degree in Systems Engineering.  |
| ![](ny20058512x1_aarchon.jpg)<br>**Angela Archon**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](edge20001484x999_bulletarrow.jpg)We believe that Ms. Archon's strategic, operational, engineering and management experience, as well as public company board experience, provide her with the necessary experience, qualifications and skills to serve as a director of DT Midstream. |

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| DT Midstream<sub>7</sub> | 2026 Proxy Statement |

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| ![](ny20058512x1_sbaker.jpg)<br>**Stephen Baker**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](edge20001484x999_bulletarrow.jpg)Mr. Baker became a director of our Company following the Spin-Off and was appointed Lead Independent Director on March 7, 2023. Mr. Baker is the owner and president and chief executive officer of Rondeau Energy Consulting Inc., a company established in 2019 focused on energy-related and merger and acquisition engagements. Mr. Baker served as president of Union Gas, Limited ("Union Gas"), from 2017 to 2019 as part of Enbridge Inc. Mr. Baker also served as president and chairman of Union Gas as part of Spectra Energy Corp. from 2012 to 2017. Over the course of his 30-year career with Union Gas, Mr. Baker held senior executive roles in finance, business development and marketing. Mr. Baker also held the role of vice president and treasurer of Spectra Energy Corp. from 2010 to 2012, where he led all treasury, capital markets and financing strategies.  |
| ![](ny20058512x1_sbaker.jpg)<br>**Stephen Baker**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](edge20001484x999_bulletarrow.jpg)Mr. Baker served on the board of Ontario's Independent Electricity System Operator from 2019 through June 2023. Mr. Baker sits on the Advisory Board of the MaRS Discovery District Energy Board and MyHEAT. Mr. Baker has previously chaired or served as a board member of a number of professional and community organizations, including the Canadian Gas Association, Ontario Energy Association and Union Gas, as well as the Children's Treatment Centre of Chatham-Kent and the Chatham-Kent Community Leaders' Cabinet.  |
| ![](ny20058512x1_sbaker.jpg)<br>**Stephen Baker**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](edge20001484x999_bulletarrow.jpg)Mr. Baker earned a Bachelor of Arts degree in honours chartered accountancy studies and a Master of Accounting degree from the University of Waterloo. Mr. Baker is a Certified Professional Accountant (Ontario/Canada) and holds an ICD.D directors certification from the Institute of Corporate Directors.  |
| ![](ny20058512x1_sbaker.jpg)<br>**Stephen Baker**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](edge20001484x999_bulletarrow.jpg)We believe that Mr. Baker's business, financial, operational and management expertise, including his specific experience as a strong leader with extensive experience in the North American energy sector and track record of success building relationships with customers and stakeholders, along with his experience serving as president of a natural gas storage distribution and transmission services company, provide him with the necessary experience, qualifications and skills to serve as a director of DT Midstream. |

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| ![](ny20058512x1_epickle.jpg)<br>**Elaine Pickle**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](edge20001484x999_bulletarrow.jpg)Ms. Pickle became a director of our Company following the Spin-Off. Ms. Pickle was a senior audit partner at Ernst & Young LLP ("EY"), from 2002 until her retirement in June 2021. Ms. Pickle also served as a National Professional Practice partner from 2014 to 2018, during which time she evaluated and had oversight for technical accounting, auditing and SEC reporting matters as well as quality initiatives. Ms. Pickle had 35 years of experience with EY serving both public and private companies primarily in the energy industry and held various roles and oversight positions throughout her career. Ms. Pickle is a certified public accountant and member of the American Institute of Certified Public Accountants and Texas State Board of Public Accountancy. She has served on the board and Development Committee of Theatre Under the Stars since 2018 and was elected to the Nomination and Governance Committee in 2025. Ms. Pickle earned her Bachelor of Business Administration in accounting, summa cum laude, from Texas Tech University in 1986. Ms. Pickle also completed the Northwestern University Kellogg School of Management Executive Leadership Program, EY Inclusiveness Leadership Program and is an NACD Certified Director. Ms. Pickle holds a Certificate in Cyber-Risk Oversight from Carnegie Mellon University and the NACD.  |
| ![](ny20058512x1_epickle.jpg)<br>**Elaine Pickle**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](edge20001484x999_bulletarrow.jpg)Ms. Pickle previously served on the corporate board and chaired the audit committee of ChampionX Corporation (NASDAQ: CHX), which was a global leader in chemistry programs and services, artificial lift solutions, automation and optimization equipment, and drilling technologies for the upstream and midstream oil and gas industry. ChampionX Corporation was acquired by SLB in 2025.  |
| ![](ny20058512x1_epickle.jpg)<br>**Elaine Pickle**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](edge20001484x999_bulletarrow.jpg)We believe that Ms. Pickle's business and management expertise, including her specific experience as an audit partner serving upstream, midstream and energy services companies and her broad understanding and perspective of the energy industry in the U.S. and throughout the world, and public company board experience provide her with the necessary experience, qualifications and skills to serve as a director of DT Midstream. |

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| DT Midstream<sub>8</sub> | 2026 Proxy Statement |

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| ![](ny20058512x1_rskaggs.jpg)<br>**Robert Skaggs, Jr.**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](edge20001484x999_bulletarrow.jpg)Mr. Skaggs served as Executive Chairman of the Board of Directors following the Spin-Off through June 30, 2023, when he resigned as an employee of our Company. From June 30, 2023, he served as Chairman of the Board of Directors until his resignation from the position of Chairman on January 27, 2026. Mr. Skaggs has over 35 years of experience in the energy industry, including leading companies in the midstream, pipeline and regulated utility sectors. Mr. Skaggs also currently serves as an independent director on the board of DTE Energy, where he has been a director since 2017 and is a member of its nuclear review, organization and compensation, and finance committees. In addition, Mr. Skaggs previously served on the board of Team, Inc. (NYSE: TISI), a global provider of specialized industrial services, from 2019 to November 2021 and as a director for Cloud Peak Energy, Inc. (NYSE: CLD), a coal mining company, from 2015 to 2019. He also is past chairman of the American Gas Association's board of directors and has served in leadership roles for a variety of charitable, community and civic efforts.  |
| ![](ny20058512x1_rskaggs.jpg)<br>**Robert Skaggs, Jr.**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](edge20001484x999_bulletarrow.jpg)Prior to joining DT Midstream's board, Mr. Skaggs served as president and chief executive officer of NiSource, Inc., a Fortune 500 energy holding company engaged in natural gas and electric utilities and the gas storage and pipeline business, from 2005 to 2015 and executed its successful separation of Columbia Pipeline Group, Inc. in mid-2015. Earlier in 2015, Mr. Skaggs executed the successful initial public offering of Columbia Pipeline Partners LP, a master limited partnership formed by NiSource, Inc., to own, operate and develop a portfolio of pipelines, storage and related midstream assets. Mr. Skaggs then served as chairman and chief executive of Columbia Pipeline Group, Inc., a natural gas pipeline and underground storage system company, and Columbia Pipeline Partners LP from 2015 to 2016.  |
| ![](ny20058512x1_rskaggs.jpg)<br>**Robert Skaggs, Jr.**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](edge20001484x999_bulletarrow.jpg)Mr. Skaggs joined the law department of Columbia Gas Transmission in 1981 and served in various management roles until 1996, when he became president of Columbia Gas of Ohio and Columbia Gas of Kentucky. Effective with the 2000 merger of NiSource, Inc. and Columbia Energy Group, Mr. Skaggs became the president of Bay State Gas and Northern Utilities. In December 2001, his role was expanded to include the duties of president and chief executive officer of the Columbia companies in Pennsylvania, Virginia and Maryland. Mr. Skaggs was promoted to executive vice president, regulated revenue of NiSource, Inc. in 2003. Mr. Skaggs earned a Bachelor of Arts degree in economics from Davidson College, a Juris Doctorate from West Virginia University and a Master's degree in Business Administration from Tulane University.  |
| ![](ny20058512x1_rskaggs.jpg)<br>**Robert Skaggs, Jr.**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](edge20001484x999_bulletarrow.jpg)We believe that Mr. Skaggs' business, operational and management expertise, including his specific experience serving as chairman and chief executive officer of a large, publicly traded energy holding company, separation experience and his experience serving on public company boards of directors, provide him with the necessary experience, qualifications and skills to serve as a director of DT Midstream. |

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| DT Midstream<sub>9</sub> | 2026 Proxy Statement |

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| ![](ny20058512x1_ptumminello.jpg)<br>**Peter Tumminello**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](edge20001484x999_bulletarrow.jpg)Mr. Tumminello became a director of our Company following the Spin-Off. In April 2025, Mr. Tumminello became executive chairman of Delta Utilities, a natural gas utility. Mr. Tumminello was the founder and president of Anticipate Energy Advisors, LLC, a company focused on providing advice in the energy and gas utility industries from 2022 through March 2025. Mr. Tumminello was the group president of commercial businesses for Southern Company Gas, a natural gas utility and energy services company and a subsidiary of Southern Company, a gas and electric utility company headquartered in Atlanta, Georgia. He served in this most recent role since 2016 prior to retiring on April 30, 2021. In this role, he was responsible for all operations outside of the regulated entities, including wholesale services, retail energy and all midstream businesses, including pipeline investments and gas storage. In addition, he served on the board of the Southern Company Gas Foundation and was a member of the Southern Company Gas management council.  |
| ![](ny20058512x1_ptumminello.jpg)<br>**Peter Tumminello**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](edge20001484x999_bulletarrow.jpg)Prior to joining Southern Company Gas in 2003, Mr. Tumminello was vice president of energy supply for Green Mountain Energy Company, a renewable energy company, and worked for TPC Corporation, a midstream energy company, and ARCO Oil and Gas Company, a provider of oil and natural gas, in various capacities in energy marketing, storage and transportation asset management, petroleum engineering, finance and planning, mergers and acquisitions and project evaluation. Mr. Tumminello was recently vice chair at the Interstate Natural Gas Association of America where he served as the board chair of the climate policy committee. He is an advisory board member at Cristo Rey Jesuit College Preparatory School of Houston. He also served as a director of CareerSpring. Mr. Tumminello earned a Bachelor of Science degree in petroleum engineering from Louisiana Tech University and a Master's degree in Business Administration from the University of Southwestern Louisiana.  |
| ![](ny20058512x1_ptumminello.jpg)<br>**Peter Tumminello**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](edge20001484x999_bulletarrow.jpg)Since January 2023, Mr. Tumminello has served on the board of Centrio, a private, QIC portfolio company focused on the business of owning and operating district energy assets and developing public-private infrastructure projects, primarily with universities. Mr. Tumminello previously served on the board of Renewa, a private, QIC portfolio company focused on the business of owning land related to existing and new development projects.  |
| ![](ny20058512x1_ptumminello.jpg)<br>**Peter Tumminello**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](edge20001484x999_bulletarrow.jpg)We believe that Mr. Tumminello's business, operational and management expertise, including his specific experience as group president of commercial businesses for Southern Company Gas, more than 30 years of experience in the energy industry and experience serving as the executive chairman of Delta Utilities and on the board of directors of Centrio, provide him with the necessary experience, qualifications and skills to serve as a director of DT Midstream. |

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| ![](ny20058512x1_dwilson.jpg)<br>**Dwayne Wilson**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](edge20001484x999_bulletarrow.jpg)Mr. Wilson became a director of our Company on June 16, 2021. Mr. Wilson has over 39 years of experience in the engineering, procurement and construction industry. Mr. Wilson also currently sits on the boards of Crown Holdings, Inc. (NYSE:CCK), a leading global supplier of packaging products, Sterling Infrastructure, Inc. (NASDAQ: STRL), a publicly traded heavy civil construction company, and Ingredion Incorporated (NYSE: INGR), a leading global ingredients solutions company, where he previously chaired the compensation committee. From 2017 to 2020, he served on the board of AK Steel Holding Corporation, a leading producer of flat-rolled carbon, stainless and electrical steel products and carbon and stainless tubular products, where he served on the public and environmental affairs committee, as well as the nominating and corporate governance committee.  |
| ![](ny20058512x1_dwilson.jpg)<br>**Dwayne Wilson**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](edge20001484x999_bulletarrow.jpg)Previously, Mr. Wilson was senior vice president of Fluor Corporation, a publicly traded multinational engineering and construction firm, serving in the role from 2014 to 2016. From 1980 until 2011, he served in roles of increasing executive responsibility with Fluor Corporation, including as group president of industrial & infrastructure, president of mining and metals, president of commercial & institutional and vice president of manufacturing and life sciences. From 2011 until 2014, he served as president and chief executive officer of Savannah River Nuclear Solutions, a joint venture between Fluor Corporation, Honeywell International Inc. and Newport News Nuclear, Inc. Mr. Wilson earned a Bachelor of Science degree in civil engineering from Loyola Marymount University.  |
| ![](ny20058512x1_dwilson.jpg)<br>**Dwayne Wilson**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](edge20001484x999_bulletarrow.jpg)We believe that Mr. Wilson's business, operational and management expertise, including his specific experience as a senior executive of a publicly traded company, and over 10 years of public company board experience provide him with the necessary experience, qualifications and skills to serve as a director of DT Midstream. |

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| DT Midstream<sub>10</sub> | 2026 Proxy Statement |

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#### Board Meeting Quorum Requirements
Our Amended and Restated Bylaws (the "Bylaws") provide that a majority of the directors constituting the Board shall constitute a quorum for the transaction of business.

The Board met seven times in 2025. No director attended fewer than 75% of the aggregate of the total number of Board meetings and the total number of meetings of all committees on which each such director served that were held during the period in which such director served.

We encourage our directors to attend annual meetings of stockholders and believe that attendance at annual meetings is just as important as attendance at Board and committee meetings. All of our directors attended the annual meeting in 2025.

#### Director Independence and Categorical Standards
The Board has adopted the Categorical Standards for Director Independence (the "Independence Standards"), which, in accordance with the New York Stock Exchange (the "NYSE") listing standards, require the Board to consist of a majority of independent directors. Pursuant to the Independence Standards, the Board must affirmatively determine that a director has no material relationship with DT Midstream, either directly or indirectly, or as a partner, stockholder or officer of an organization that has a relationship with DT Midstream.

A director for whom any of the following is true will not be considered independent:

&nbsp;&nbsp;&nbsp;&nbsp;• A director who is currently, or has been in the past three years, an employee of DT Midstream or a subsidiary.

&nbsp;&nbsp;&nbsp;&nbsp;• A director whose immediate family member is, or has been within the last three years, an executive officer of DT Midstream.

&nbsp;&nbsp;&nbsp;&nbsp;• A director who receives, or whose immediate family member receives, more than $120,000 in compensation directly from DT Midstream during any twelve-month period within the last three years, other than director and committee fees or other forms of deferred compensation for prior service (provided such compensation is not contingent in any way on continued service).

&nbsp;&nbsp;&nbsp;&nbsp;• A director who is a current partner of a firm that is DT Midstream's internal or external auditor; a director that has an immediate family member who is a current partner of such a firm; a director that has an immediate family member who is a current employee of such a firm and personally works on DT Midstream's audit; or a director or immediate family member that was, within the last three years, a partner or employee of such a firm and personally worked on DT Midstream's audit within that time.

&nbsp;&nbsp;&nbsp;&nbsp;• A director who, or whose immediate family member, is employed, or has been employed within the last three years, as an executive officer of another company where any of DT Midstream's present executives at the same time serves or served on that company's compensation committee.

&nbsp;&nbsp;&nbsp;&nbsp;• A director who is a current employee, or whose immediate family member is, a current executive officer, of a company that has made payments to, or received payments from, DT Midstream for property or services in an amount which, in any of the last three fiscal years, exceeds the greater of $1 million or 2% of such other company's consolidated gross revenues. Charitable contributions are not considered "payments" for purposes of this prohibition.

The Board has affirmatively determined, after applying these standards and considering all relevant facts and circumstances, that all of our directors other than Robert Skaggs, Jr. and David Slater qualify as independent and have no material relationship with DT Midstream. The independent directors are Angela Archon, Stephen Baker, Elaine Pickle, Peter Tumminello and Dwayne Wilson. Robert Skaggs, Jr. and David Slater are not independent directors and may be deemed to be affiliates of DT Midstream under the categorical standards. Robert Skaggs, Jr. is not considered independent due to his previous employment with the Company in the past three years. David Slater is not considered independent due to his role as Chief Executive Officer of DT Midstream. No material relationships exist that the Board was required to consider when determining the independence of the directors other than Robert Skaggs, Jr. and David Slater.

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| DT Midstream<sub>11</sub> | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**

#### Executive Sessions
Independent directors meet in executive session in which independent directors meet without the presence or participation of management at most regular Board meetings and meet in executive session at other times whenever they believe it is appropriate. Stephen Baker as the Lead Independent Director chairs the executive sessions of the independent directors.

#### Compensation Committee Interlocks and Insider Participation
No member of our O&C Committee is presently or has been an officer or employee of the Company. In addition, during the last fiscal year, no executive officer served as a member of the compensation committee (or other Board committee performing similar functions or, in the absence of any such committee, the entire Board) of another entity, any of whose executive officers served on the O&C Committee of DT Midstream.

#### Director Continuing Education and Orientation
Our Governance Guidelines establish recommendations for director education. All new members of the Board are encouraged to participate in the Company's orientation program for directors, which includes training on the Company's structure, business policies, financial reporting and key regulatory issues. The Corporate Governance Committee evaluates the background of each new director and may, if it deems appropriate, request that the new director attend at least one director education program within one year after the date of their election. New directors also conduct visits to some of the Company's sites of operation and have meetings with key people at the Company, including management, to help facilitate the onboarding process. As of the Record Date, all of our directors have completed the Company's director orientation and education program. In addition, all directors are encouraged to participate in continuing education programs to enhance their skills, assist in fulfilling their responsibilities and stay current and knowledgeable about the business of the Company including through programs such as the American Gas Association Rate School, NACD Directorship Certification Program and Cyber-Risk Oversight Certification Program, and periodic trainings conducted by third-party experts.

#### Committees of the Board
Our Board has an Audit Committee, O&C Committee, Corporate Governance Committee, Finance Committee and Environmental, Social and Governance Committee ("ESG Committee"). The Board committees act in an advisory capacity to the full Board, except that the O&C Committee has direct responsibility for the Chief Executive Officer's goals, performance and compensation along with compensation of other executive officers, and the Audit Committee has direct responsibility for appointing, replacing, compensating and overseeing the independent registered public accounting firm. Our Board has adopted a written charter for each of the standing committees that clearly establishes the committees' respective roles and responsibilities, which is posted to our website at dtmidstream.com/company/governance. The Board has determined that each member of the Audit, O&C and Corporate Governance Committees is independent under our Independence Standards.

#### Audit Committee
Our Audit Committee consists of Mr. Baker, Ms. Pickle and Mr. Tumminello, with Ms. Pickle serving as chair and as the audit committee financial expert. The Board has determined that each member of the Audit Committee meets the independence requirements under the SEC rules and the NYSE listing standards applicable to audit committee members. The Audit Committee met five times during 2025.

The Audit Committee was established in accordance with Section 3(a)(58)(A) and Rule 10A-3 under the Securities Exchange Act of 1934, as amended, which we refer to as the "Exchange Act." The responsibilities of our Audit Committee are more fully described in our Audit Committee charter. Among other duties, our Audit Committee:

&nbsp;&nbsp;&nbsp;&nbsp;• assists the Board in its oversight of the quality and integrity of our accounting, auditing and financial reporting practices and the independence of the independent registered public accounting firm, including integrity of the financial statements;

&nbsp;&nbsp;&nbsp;&nbsp;• reviews the scope of the annual audit and the annual audit report of the independent registered public accounting firm;

&nbsp;&nbsp;&nbsp;&nbsp;• reviews the policies, programs, performance and activities relating to DT Midstream's compliance with legal and regulatory requirements and ethics programs;

&nbsp;&nbsp;&nbsp;&nbsp;• reviews accounting policies and system of internal controls over financial reporting;

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&nbsp;&nbsp;&nbsp;&nbsp;• oversees the risk assessment process; and

&nbsp;&nbsp;&nbsp;&nbsp;• assumes responsibility for the appointment, replacement, compensation and oversight of the independent registered public accounting firm including its qualifications and independence.

The Audit Committee has at least three members and consists entirely of independent directors, each of whom meets the independence requirements set forth in the listing standards of the NYSE and Rule 10A-3 under the Exchange Act and under our categorial standards. Each member of the Audit Committee is financially literate, and at least one member of the Audit Committee has accounting and related financial management expertise and satisfy the criteria to be an "audit committee financial expert" under the rules and regulations of the SEC, as those qualifications are interpreted by our Board in its business judgment.

#### Organization and Compensation Committee
Our O&C Committee consists of Ms. Archon, Ms. Pickle and Mr. Wilson, with Mr. Wilson serving as chair. The Board has determined that each member of the O&C Committee meets the independence requirements under the SEC rules and the NYSE listing standards applicable to compensation committee members. The O&C Committee met six times during 2025.

The O&C Committee consists entirely of independent directors, each of whom meets the independence requirements set forth in the listing standards of the NYSE, Rule 10C-1 under the Exchange Act and under our categorical standards and are "non-employee directors" (within the meaning of Rule 16b-3 under the Exchange Act). The responsibilities of our O&C Committee are more fully described in our O&C Committee charter. Among other duties, our O&C Committee:

&nbsp;&nbsp;&nbsp;&nbsp;• reviews the Chief Executive Officer's performance and determines and approves the Chief Executive Officer's compensation;

&nbsp;&nbsp;&nbsp;&nbsp;• approves the compensation of certain other executive officers and executive compensation and benefit programs generally;

&nbsp;&nbsp;&nbsp;&nbsp;• reviews and approves executive employment agreements, severance agreements and change-in-control agreements, along with any amendments to such agreements;

&nbsp;&nbsp;&nbsp;&nbsp;• reviews compensation disclosure and recommends inclusion in DT Midstream's annual report or proxy statement;

&nbsp;&nbsp;&nbsp;&nbsp;• reviews DT Midstream's policies and programs promoting DT Midstream's Know, Support and Respect priorities among employees and executive officers;

&nbsp;&nbsp;&nbsp;&nbsp;• recommends to the full Board the executive officers to be appointed by the Board;

&nbsp;&nbsp;&nbsp;&nbsp;• reviews succession and talent planning; and

&nbsp;&nbsp;&nbsp;&nbsp;• evaluates the independence of the independent compensation consultant, if any, at least annually.

#### Corporate Governance Committee
Our Corporate Governance Committee consists of Ms. Archon, Mr. Baker and Mr. Wilson, with Ms. Archon serving as chair. The Corporate Governance Committee met four times during 2025.

The Corporate Governance Committee consists entirely of independent directors, each of whom meets the independence requirements set forth in the listing standards of the NYSE and under our categorical standards.

The responsibilities of our Corporate Governance Committee are more fully described in our Corporate Governance Committee charter. Among other duties, our Corporate Governance Committee:

&nbsp;&nbsp;&nbsp;&nbsp;• considers the organizational structure of the Board;

&nbsp;&nbsp;&nbsp;&nbsp;• identifies and reports to the Board risks associated with DT Midstream's governance practices and the interaction of DT Midstream's governance with enterprise risk management;

&nbsp;&nbsp;&nbsp;&nbsp;• recommends the nominees for directors to the Board;

&nbsp;&nbsp;&nbsp;&nbsp;• reviews recommendations for director nominations received from stockholders; and

&nbsp;&nbsp;&nbsp;&nbsp;• reviews best practices in corporate governance and recommends corporate and Board policies/practices, as appropriate.

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#### Finance Committee
Our Finance Committee consists of Mr. Baker, Ms. Pickle and Mr. Tumminello, with Mr. Baker serving as chair. The Finance Committee met seven times during 2025.

The responsibilities of our Finance Committee are more fully described in our Finance Committee charter. Among other duties, our Finance Committee:

&nbsp;&nbsp;&nbsp;&nbsp;• reviews matters related to financial policies, capitalization and credit ratings;

&nbsp;&nbsp;&nbsp;&nbsp;• recommends dividend policy to the Board;

&nbsp;&nbsp;&nbsp;&nbsp;• reviews certain capital expenditures;

&nbsp;&nbsp;&nbsp;&nbsp;• reviews financial risk management;

&nbsp;&nbsp;&nbsp;&nbsp;• receives reports on strategy, corporate preparedness analysis and investment policies;

&nbsp;&nbsp;&nbsp;&nbsp;• approves DT Midstream's capital markets plan, including the issuance and retirement of debt and equity;

&nbsp;&nbsp;&nbsp;&nbsp;• reviews certain potential mergers, acquisitions and divestitures;

&nbsp;&nbsp;&nbsp;&nbsp;• reviews investor relations activities; and

&nbsp;&nbsp;&nbsp;&nbsp;• retains independent outside professional advisors, as needed.

#### Environmental, Social and Governance Committee
Our ESG Committee consists of Ms. Archon, Mr. Tumminello and Mr. Wilson, with Mr. Tumminello serving as chair. The ESG Committee met four times during 2025.

The responsibilities of our ESG Committee are more fully described in our ESG Committee charter. Among other duties, our ESG Committee:

&nbsp;&nbsp;&nbsp;&nbsp;• reviews strategy, policies, practices, and disclosures with respect to environmental, health and safety, corporate social responsibility, corporate governance, sustainability and other public policy matters, which we collectively refer to as "ESG Matters";

&nbsp;&nbsp;&nbsp;&nbsp;• considers and brings to the Board's attention appropriate and current legislative and regulatory developments relating to government relations, trade or public policy issues, and other relevant matters relating to ESG matters; and

&nbsp;&nbsp;&nbsp;&nbsp;• reviews and provides insights in the drafting of the Company's published Corporate Sustainability Report.

#### Director Compensation
We have adopted a competitive compensation program for our non-employee directors to enable us to attract and retain high-quality directors, provide them with compensation at a level that is consistent with our compensation objectives and encourage their ownership of our shares of common stock to further align their interests with those of our stockholders. Directors who are also employees of DT Midstream do not receive any additional compensation for their services as directors.

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Our non-employee directors' annual compensation consists of the following cash and equity-based compensation components:

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| **Cash Compensation** |  |
| Cash retainer | $100,000 annually; Chairman of the Board receives an additional cash retainer of $100,000 annually  |
| Committee chair retainer | $20,000 annually for Audit Committee Chair and Lead Independent Director; $15,000 annually for each of the O&C Committee Chair, Corporate Governance Committee Chair, Finance Committee Chair and ESG Committee Chair  |
| **Equity Compensation**  |  |
| Annual equity compensation | A variable number of restricted stock units of DT Midstream valued at $115,000 annually deferred for one year or until retirement, whichever is elected by the director |

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#### Director Compensation Table for 2025
The following table sets forth information concerning the compensation of the Company's non-employee directors who received compensation for 2025.

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| **Name** | **Fees Earned or Paid in Cash** | **Stock Awards<sup>(1)</sup>** | **Total**  |
| Angela Archon | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$115000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$115000 | $230000  |
| Stephen Baker | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$135000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$115000 | $250000  |
| Elaine Pickle | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$120000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$115000 | $235000  |
| Robert Skaggs, Jr. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$200000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$115000 | $315000  |
| Peter Tumminello | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$115000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$115000 | $230000  |
| Dwayne Wilson | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$115000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$115000 | $230000 |

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&nbsp;&nbsp;&nbsp;&nbsp;(1) Represents the grant date fair value computed in accordance with ASC Topic 718 of the annual grants of restricted stock units, which will vest on May 6, 2026 or, if elected by the director, upon the director's retirement from the Board, subject, in each case, to the director's continued service as a non-employee director for the Company through that date. As of December 31, 2025, our non-employee directors held the following number of outstanding restricted stock units (including reinvested dividends): Ms. Archon—1,163; Mr. Baker—7,802; Ms. Pickle—7,802; Mr. Skaggs—3,009; Mr. Tumminello—5,717; and Mr. Wilson—7,802.

In addition, we require that each non-employee director, within five years after initial election to the Board, own shares of the Company's common stock having a value equal to five times their total annual cash retainer. In addition to directly owned shares, restricted stock units are counted toward the fulfillment of this ownership requirement. All of our directors are on track to meet this requirement within the five-year period.

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## CORPORATE GOVERNANCE

#### Our Commitment to Sound Corporate Governance
At DT Midstream, we are committed to operating in an ethical, legal, environmentally sensitive and socially responsible manner, while creating long-term value for our stockholders. Our governance structure enables independent, experienced and accomplished directors to provide advice, insight and oversight to advance the interests of DT Midstream and our stockholders. We strive to maintain sound governance standards, as reflected in our Governance Guidelines, Code of Business Conduct and Ethics, our systematic approach to risk management and our commitment to transparent financial reporting and strong internal controls.

The following documents are available on the Corporate Governance section of our website, dtmidstream.com/company/governance, where you can access information about corporate governance at DT Midstream:

&nbsp;&nbsp;&nbsp;&nbsp;• Governance Guidelines;

&nbsp;&nbsp;&nbsp;&nbsp;• Board of Directors Code of Business Conduct and Ethics;

&nbsp;&nbsp;&nbsp;&nbsp;• Director Independence Standards;

&nbsp;&nbsp;&nbsp;&nbsp;• Related Party Transactions Policy;

&nbsp;&nbsp;&nbsp;&nbsp;• Corporate Policy on Political Engagement;

&nbsp;&nbsp;&nbsp;&nbsp;• Information about our confidential ethics violation reporting program, which allows DT Midstream employees and other stakeholders to identify potential instances of non-compliance or unethical practices confidentially and outside the usual management channels; and

&nbsp;&nbsp;&nbsp;&nbsp;• Information about how to communicate concerns to the Board

The information on our website is not, and shall not be deemed to be, a part of this proxy statement or incorporated into any other filings we make with the SEC.

#### Human Capital Resources
DT Midstream recognizes that being innovative is necessary for our continued growth. We currently employ approximately 580 employees, exclusive of our student intern program. All of our employees are in the U.S., with our headquarters in Detroit, Michigan. None of our employees are covered by collective bargaining agreements. We believe that our employee relations are good.

Our human capital resources objectives continue to center around employee engagement, strengthening our culture, and leadership development. We accomplish this through our annual engagement survey and training focused on our Know, Support and Respect priorities discussed below. We maintain and grow our team through practices that help us identify and hire new talent, as well as incentivize and retain our existing employees. Our employees have access to online learning resources, tuition reimbursement programs, and formal leadership development programs for emerging leaders identified at various levels within our corporate structure. In conjunction with our Board's succession planning review described below under "The Board's Role in Strategy and Succession Planning", our executive leadership team meets annually with the O&C Committee to discuss executive leadership succession planning, including successor candidates and emerging leaders for senior management positions within the Company.

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DT Midstream is committed to building an empowered and engaged team that delivers safe and reliable service to our customers. We integrate these practices into our overall operating model and focus on the outcomes of Knowing, Supporting, and Respecting one another. We regularly review our geographical availability, representation demographics and engagement scores and we evaluate our success based on our ability to advance our Know, Support and Respect priorities:

&nbsp;&nbsp;&nbsp;&nbsp;• Know — Deliberately understanding the demographics and cultural norms of the communities where we live and operate;

&nbsp;&nbsp;&nbsp;&nbsp;• Support — Honestly understanding and listening to the perspectives and needs of all employees, regardless of location, position, or tenure and developing strategic action plans based on annual engagement survey feedback; and

&nbsp;&nbsp;&nbsp;&nbsp;• Respect — Respect is required so that every employee feels comfortable being themselves at work.

#### Health and Safety
The health and safety of people, including our employees, contractors, customers, and the communities we serve is our top priority. Our safety culture is maintained and strengthened by our safety team, which monitors events, compliance and training activities.

We monitor our safety performance with leading and lagging indicators, such as safety observations, near-misses and the OSHA recordable injury metrics.

#### Compensation and Benefits
Our human capital resources objectives include recruiting, incentivizing, fostering belonging and retaining top talent. To achieve this, we offer all employees competitive compensation packages, annual and long-term incentive programs, defined contribution retirement savings plans and an employer contribution match, as well as paid time off, medical, dental, vision and other employee benefits. We review our compensation practices annually to ensure that pay is fair and internally equitable. For additional information on the metrics used in our incentive plans, see the section titled "Annual and Long-Term Incentives".

#### Criteria for Board Membership
We believe our Board should be comprised of directors who have had high-level executive experience, have been directors on other boards, or worked extensively with public company boards and have been tested through economic downturns and crises. Industry experience, regional relationships and a broad diversity of experience and backgrounds are also factors in Board nominee selection. Although we have not adopted a formal diversity policy, we value the diversity of our Board. The Board's Governance Guidelines reflect our belief that its membership should possess diverse perspectives, skills, experiences, backgrounds and personal attributes, and we consider those factors in the identification and evaluation of candidates for Board membership.

The Corporate Governance Committee considers candidates who have been properly nominated by stockholders, as well as candidates who have been identified by Board members and DT Midstream personnel. In addition, the Corporate Governance Committee may use a search firm to assist in the search for candidates and nominees and to evaluate the nominees' skills against the Board's criteria. Potential candidates are reviewed and evaluated by the Corporate Governance Committee, and selected candidates go on to be interviewed by one or more Corporate Governance Committee members. An invitation to join the Board is extended by the Board itself, through the Executive Chairman and the Chair of the Corporate Governance Committee.

Under our Bylaws, a group of up to 20 stockholders owning 3% or more of DT Midstream's outstanding common stock continuously for at least three years may nominate and include in our proxy materials a candidate for the Board, which we refer to as a "Stockholder Nominee", provided that the stockholder(s) and the Stockholder Nominee satisfy the requirements specified in our Bylaws. The total number of Stockholder Nominees that we must include in our proxy materials in a given year shall not exceed the greater of (i) two or (ii) 20% of the number of directors in office at the time of the nomination.

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#### Board Leadership Structure
The Corporate Governance Committee routinely reviews our governance practices and board leadership structure. Our Bylaws provide that the Chairman may simultaneously serve as the Chief Executive Officer of the Company and shall preside at all meetings of the Board. Our Bylaws also provide that the independent members of the Board may elect an independent director as Lead Independent Director, which has been our practice.

The Board, in accordance with the Company's Governance Guidelines, will determine whether these positions should be held by the same individual or separate individuals. Robert Skaggs, Jr. served as Chairman of the Board of Directors until his resignation from the position of Chairman on January 27, 2026. Following Mr. Skaggs' resignation from the role of Chairman, the Board appointed David Slater, the Company's President and Chief Executive Officer, as Executive Chairman of the Board effective January 28, 2026. Mr. Slater resigned from the role of President as of the same date, but remained the Company's Chief Executive Officer. The Board believes this structure provides an effective balance between strong company leadership and appropriate oversight by independent directors. The Board members have considerable experience and knowledge regarding the Company's industry and the opportunities and challenges facing the Company. As such, we believe that the Company is well-served by this leadership structure.

In order to promote thoughtful oversight, independence, and overall effectiveness, the Company's Governance Guidelines provide that the Board may elect a director from among its independent directors as Lead Independent Director by a majority vote of the independent directors. Stephen Baker has been serving as Lead Independent Director since March 7, 2023. As Lead Independent Director, Mr. Baker's responsibilities include the following:

&nbsp;&nbsp;&nbsp;&nbsp;• Call executive sessions; preside at Board executive sessions of non-management directors or independent directors, and provide feedback regarding such sessions, as appropriate, to the Chairman of the Board and/or the Chief Executive Officer;

&nbsp;&nbsp;&nbsp;&nbsp;• Serve as the liaison between the Chairman of the Board and/or the Chief Executive Officer and the independent directors;

&nbsp;&nbsp;&nbsp;&nbsp;• Approve the general scope and type of information to be presented at Board meetings;

&nbsp;&nbsp;&nbsp;&nbsp;• Review stockholder communications addressed to the Board or to the Lead Independent Director;

&nbsp;&nbsp;&nbsp;&nbsp;• If requested by major stockholders, make himself available for direct consultation and communication with stockholders;

&nbsp;&nbsp;&nbsp;&nbsp;• Organize Board meetings in the absence of the Chairman of the Board; preside at any session of the Board where the Chairman of the Board is not present;

&nbsp;&nbsp;&nbsp;&nbsp;• Designate one or more directors as alternate members of any committee to replace an absent or disqualified member at any committee meeting, provided that, in the event an alternate member is designated for the Audit, Corporate Governance or O&C Committees, the designate meets the Company's categorical standards for director independence;

&nbsp;&nbsp;&nbsp;&nbsp;• Consult with the Chairman of the Board and/or the Chief Executive Officer in the selection of topics to be discussed when developing the annual Board calendar;

&nbsp;&nbsp;&nbsp;&nbsp;• In consultation with the Board, retain independent advisors on behalf of the Board as the Board determines to be necessary or appropriate;

&nbsp;&nbsp;&nbsp;&nbsp;• Participate in the O&C Committee's annual review and approval of the Chief Executive Officer's corporate goals and objectives and evaluation of the Chief Executive Officer's performance against those goals;

&nbsp;&nbsp;&nbsp;&nbsp;• Following consultation with the Chairman of the Board and the Corporate Secretary, approve Board meeting agendas; and

&nbsp;&nbsp;&nbsp;&nbsp;• Collaborate with the Chairman of the Board and the Corporate Secretary on scheduling Board and committee meetings and approves the schedule of Board and committee meetings.

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#### Assessment of Board and Committee Performance
The Board evaluates its performance on an annual basis, the process of which is overseen by the Corporate Governance Committee. The evaluation is an assessment of the Board's contribution as a whole, as well as a review of specific areas where the Board and management believe that the Board can better contribute or can better utilize more effective operational practices. In addition, each Board committee performs an annual self-assessment to determine its effectiveness. Each Board member performs an annual peer review of the other directors who have served one year or more. The results of the Board and committee self-assessments are discussed with the Board and each committee, respectively. The results of the individual peer review are reviewed by the Chairman of the Board or Lead Independent Director and discussed with the Board.

Additionally, the O&C Committee of the Board annually evaluates the performance of the Chief Executive Officer. Either the Chair of the O&C Committee or the Lead Independent Director discusses the results of such evaluation with the non-management directors in an executive session and communicates the results thereafter with the Chief Executive Officer. The evaluation is based on both objective and subjective criteria. Some of the factors upon which the Chief Executive Officer will be evaluated include corporate performance, development of management and the accomplishment of annual objectives and long-term strategic goals. The O&C Committee factors this evaluation when considering the compensation of the Chief Executive Officer.

#### Terms of Office
In accordance with our Certificate of Incorporation, each director is elected annually for a term of one year.

The Board has not established term limits for directors. We assure the independence and ongoing effectiveness of each independent director through the individualized peer assessment process described above, in which each Board member annually undergoes a rigorous evaluation by the other members. In addition, the Corporate Governance Committee of the Board has established policies that directors (other than current or retired chief executive officers of DT Midstream or our subsidiaries) shall not stand for election after attaining the age of 72 and directors who are current or retired chief executive officers of DT Midstream or our subsidiaries shall not stand for election after attaining the age of 70, in either case, unless the Board waives such age limit when circumstances exist which make it prudent to continue the service of the particular director. Except for the Chief Executive Officer and Executive Chairman, who may continue to serve as a director after retirement, any other employees who are also directors will not stand for re-election after retiring from employment with DT Midstream.

In 2026, the Board, in consultation with the Corporate Governance Committee, determined that it is in the best interest of the Company and its stockholders to waive the retirement age of 72 with respect to Mr. Skaggs for a period of two years. Mr. Skaggs has served on the Board of the Company since 2021. He has over 35 years of industrial experience, especially in the FERC-regulated pipeline sector. Furthermore, he has deep institutional knowledge of DTM and provides strong continuity of leadership. In granting the waiver, the Corporate Governance Committee and the Board considered, among other benefits, an appropriate amount of time to develop and mentor a new chairman, maintaining a strong continuity of leadership on the Board, and, given the recent Interstate Pipelines acquisition, his robust FERC-regulated pipeline experience. The Corporate Governance Committee and the Board believe that Mr. Skaggs' deep knowledge of the Company's business and industry, and his significant ongoing contributions will continue to be of value to the Board and in the best interests of the Company and its stockholders.

#### The Board's Role in Strategy and Succession Planning
The Board reviews the Company's financial performance on a regular basis at Board meetings and through regular updates from management. The Board also periodically reviews and assesses the Company's short and long-term strategy and performance, on both an absolute basis and in relation to the performance, practices and policies of its peers.

The Board also reviews the Company's succession planning, including succession planning in the case of the incapacitation, retirement or removal of the Chief Executive Officer. In that regard, the Chief Executive Officer keeps the Board and the O&C Committee informed of management's recommendations regarding succession plans, including through an annual report to the Board and O&C Committee on recommending and evaluating potential successors, along with a review of any development plans recommended for such individuals. The Chief Executive Officer provides to the Board, on a continuing basis, his recommendation as to a successor in the event of an unexpected emergency. The Corporate Secretary is the custodian of

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this confidential recommendation. The Board also reviews succession planning with respect to the Company's other key executive officers and ensures that directors have substantial opportunities to engage with successor candidates, including emerging leaders. The Board has access to external consultants, as needed.

#### Board Risk Oversight Functions
Each Board committee is responsible for overseeing and considering risk issues relating to their respective committee which includes the following:

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| **Board Committee** | **Areas of Risk Oversight**  |
| Audit Committee | Overall review of risk issues, policies and controls associated with our overall financial reporting and disclosure process and legal and regulatory compliance, and review policies on risk control assessment and financial, accounting and cybersecurity risk exposure.  |
| Organization and Compensation Committee | Assess and discuss with the Board the relationship between the inherent risks in executive compensation plans, executive compensation arrangements and executive performance goals and payouts, and how the level of risk corresponds to DT Midstream's business strategies.  |
| Corporate Governance Committee | Review risks associated with DT Midstream's governance practices and the interaction of DT Midstream's governance with enterprise risk-level management.  |
| Finance Committee | Review of financial, capital, credit and insurance risk.  |
| Environmental, Social and Governance Committee | Review DT Midstream's risk exposures as they relate to ESG Matters and the management of those risks. |

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All Board committees meet periodically with members of senior management to discuss the relevant risks and challenges facing DT Midstream. In addition to its regularly scheduled committee meetings, the Audit Committee meets with the Chief Financial Officer, the Chief Audit Executive and Chief Risk Officer and the independent registered public accounting firm in executive sessions at least semi-annually and meets with the General Counsel and the Chief Ethics and Compliance Officer at least annually in separate executive sessions. DT Midstream's Chief Audit Executive and Chief Risk Officer attends all Audit Committee meetings. The Chief Audit Executive and Chief Risk Officer and Chief Financial Officer meet annually with either the Audit Committee or the full Board to update the members on DT Midstream's enterprise-level risk management. The Chief Audit Executive and Chief Risk Officer and the Chief Financial Officer also periodically meet with the other Board committees and the full Board as may be required.

We also utilize an internal Executive Committee, which is chaired by the Chief Executive Officer and is comprised of the Chief Financial Officer, Chief Operating Officer, General Counsel, Chief Administrative Officer and other senior officers. Among other things, the internal Executive Committee directs the ongoing management of a comprehensive set of enterprise level risks, including the establishment and regular review of risk mitigation efforts.

We believe that the committee structure of risk oversight is in the best interests of DT Midstream and our stockholders. Each committee member has expertise on risks relative to the nature of the committee on which he or she sits. The entire Board is in a position to assess the overall risk implications, to evaluate how they may affect DT Midstream and to provide oversight on appropriate actions for management to take. When granting authority to management, approving strategies and receiving management reports, the Board and committees consider, among other things, the risks we face.

#### Procedures for Approval of Related Party Transactions
Our Board has adopted a written policy regarding the review, approval and ratification of transactions with related parties. This policy provides that our Corporate Governance Committee shall conduct a reasonable prior review and maintain oversight of all related party transactions required to be disclosed pursuant to Item 404 of Regulation S-K under the Exchange Act for potential conflicts of interest and will prohibit such a transaction if it determines it to be inconsistent with the interests of DT Midstream and its stockholders. The Corporate Governance Committee is also responsible for reviewing such other transactions of DT Midstream in which any "related party" had, has or will have a direct or indirect material interest. In general, "related parties"

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are our directors, director nominees, executive officers and stockholders beneficially owning more than 5% of our outstanding common stock and immediate family members or certain affiliated entities of any of the foregoing parties. Our Corporate Governance Committee will approve or ratify only those transactions that are fair and reasonable to DT Midstream and in DT Midstream and its stockholders' best interests.

A director may not be involved in a business transaction in which the director has a conflict of interest with DT Midstream. Anything that could present a conflict of interest for a director may also present a conflict of interest if it is related to a member of his or her immediate family. Because potential conflicts of interest may not always be clear cut, directors, individuals subject to Section 16 of the Exchange Act and senior executive officers will be expected to disclose any material transaction or relationship that involves, or may involve, a conflict of interest or potential conflict of interest with DT Midstream promptly to the chair of DT Midstream's Corporate Governance Committee or the Executive Chairman of the Board, who may consult with legal counsel, as appropriate.

#### Communications with the Board
We have established several methods for stockholders or other non-affiliated persons to communicate their concerns to our directors. Concerns regarding auditing, accounting practices, internal controls, or other business ethics issues may be submitted to the Audit Committee through its reporting channel:

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| ![](ny20058512x1_byphone.jpg)<br>**By telephone:** <br>(855) 222-0671<br>  | ![](ny20058512x1_mailaudit.jpg)<br>**By mail:** <br>**For auditing,** <br>**accounting or internal** <br>**control matters:** <br>DT Midstream, Inc. <br>Audit Committee <br>500 Woodward, Suite 2900 <br>Detroit, Michigan 48226 | ![](ny20058512x1_mailbusiness.jpg)<br>**For business ethics issues:** <br>DT Midstream, Inc. <br>Ethics and Compliance Office <br>500 Woodward, Suite 2900 <br>Detroit, Michigan 48226 |
| ![](ny20058512x1_online.jpg)<br>**By Internet:** <br>www.lighthouse-<br>services.com/dtmidstream | ![](ny20058512x1_mailaudit.jpg)<br>**By mail:** <br>**For auditing,** <br>**accounting or internal** <br>**control matters:** <br>DT Midstream, Inc. <br>Audit Committee <br>500 Woodward, Suite 2900 <br>Detroit, Michigan 48226 | ![](ny20058512x1_mailbusiness.jpg)<br>**For business ethics issues:** <br>DT Midstream, Inc. <br>Ethics and Compliance Office <br>500 Woodward, Suite 2900 <br>Detroit, Michigan 48226 |

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Any other concern may be submitted to the Corporate Secretary by mail for prompt delivery to the Lead Independent Director at: Lead Independent Director, c/o Corporate Secretary, DT Midstream, Inc., 500 Woodward, Suite 2900, Detroit, Michigan 48226.

#### Insider Trading, Anti-Hedging and Anti-Pledging Policies
The Board and management of the Company take seriously their responsibilities and obligations to exhibit the highest standards of behavior relative to trading our stock. The Company has adopted an Insider Trading Policy applicable to all of the Company's and its subsidiaries' employees, officers, directors and contract personnel with respect to transactions in the Company's securities. The Insider Trading Policy is reasonably designed to promote compliance with insider trading laws, rules and regulations, and the NYSE listing standards. While the Company has not adopted a formal policy governing insider trading restrictions on the Company itself, as a matter of practice the Company observes similar procedures and restrictions, including the potential existence of material non-public information, with respect to transactions by the Company in its securities, including repurchases of common stock. The Company also maintains policies which expressly prohibit hedging Company securities by all officers and directors of the Company. Our Governance Guidelines prohibit directors from pledging, hypothecating, or otherwise encumbering shares of Company stock as collateral for any loan or indebtedness and our Officer Code of Business Conduct and Ethics prohibit officers from pledging, hypothecating, or otherwise encumbering shares of Company stock as collateral for any loan or indebtedness. These prohibitions include, but are not limited to, holding such shares in a margin account.

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#### Delinquent Section 16(a) Reports
Section 16(a) of the Exchange Act requires DT Midstream's directors and executive officers and persons who own more than 10% of a registered class of DT Midstream's equity securities to file with the SEC initial reports of ownership and reports of changes in beneficial ownership of such equity securities of DT Midstream. To DT Midstream's knowledge, based upon the reports filed and written representations regarding reports required during the fiscal year ended December 31, 2025, no executive officer or director of DT Midstream failed to file reports required by Section 16(a) on a timely basis except that a Form 4 reporting the acquisition of 1,363.797 shares of our common stock by Robert Skaggs, Jr. was filed late due to an inadvertent omission on March 12, 2025.

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| 1  | **Proposal:**<br>**Election of Directors** |

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The Board has nominated the following seven director candidates, each of whom currently serve as our directors, to hold office until our 2027 annual meeting of stockholders: Angela Archon, Stephen Baker, Elaine Pickle, Robert Skaggs, Jr., David Slater, Peter Tumminello and Dwayne Wilson.

The Company representatives named in the proxy card intend to vote for the election of each of the director nominees above, unless you indicate on your proxy that your vote should be withheld from any or all of the nominees.

For details regarding the qualifications and the specific experiences, qualifications and skills of each of our director nominees, see the section titled "Our Board of Directors."

#### Vote Required
Approval of Proposal No. 1 requires the plurality of the votes cast with respect to a director nominee. This means that the director nominees receiving the highest number of affirmative "for" votes will be elected. Abstentions and broker non-votes will have no effect on the election of directors.

**The Board recommends you vote FOR each of the nominated directors.**<br>

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| DT Midstream | **23** | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**

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| 2  | **Proposal:** <br>**Ratification of Appointment of Independent Registered Public Accounting Firm** |

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The Audit Committee of the Board has approved the retention of PwC as our independent registered public accountants for the fiscal year ending December 31, 2026. We are asking that you ratify that appointment, although your ratification is not required. A PwC representative will attend the Annual Meeting and have an opportunity to make a statement if he or she desires and will be available to respond to appropriate questions from stockholders.

#### PwC Information
The following table presents fees for services rendered by PwC during the fiscal years ended December 31, 2025 and December 31, 2024:

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| **For the Year Ended December 31,** | **2025** | **2024**  |
| **Audit fees** | $2142500 | 2598000  |
| **Tax fees** | 95000 | 63833  |
| **All other fees<sup>(1)</sup>** | 3000 | 2000  |
| Total | **$2240500** | **$2663833** |

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&nbsp;&nbsp;&nbsp;&nbsp;(1) Consists of fees for products and services other than the services reported above, including fees for subscription to PwC's disclosure checklist tool.

The Audit Committee has determined that the non-audit services rendered by PwC were compatible with maintaining its independence. All such non-audit services were pre-approved by the Audit Committee pursuant to the pre-approval policy set forth below.

#### Audit Fees
These amounts represent fees of PwC for the integrated audit of our annual consolidated financial statements and internal control over financial reporting, the review of quarterly consolidated financial statements, and the services that an independent auditor would customarily provide in connection with subsidiary audits, statutory requirements, regulatory filings, comfort letters and similar engagements for the fiscal year. Audit fees also include advice about accounting matters that arose in connection with or as a result of the audit or the review of periodic financial statements.

#### Audit-Related Fees
There were no audit-related fees billed by PwC for fiscal years 2025 and 2024.

#### Tax Fees
Tax fees generally consist of tax compliance and tax planning services. Tax compliance services consist of preparing tax returns. Tax planning services consist of interpretation of tax law and regulations in applicable tax jurisdictions.

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| DT Midstream | **24** | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**

#### Audit Committee Pre-Approval Policies and Procedures
The Audit Committee reviews the independence of our independent registered public accounting firm on an annual basis and has determined that PwC is independent. In addition, the Audit Committee pre-approves all work and fees that are performed by our independent registered public accounting firm.

#### Vote Required
Approval of Proposal No. 2 requires the affirmative vote of a majority of the voting power of the Company's common stock present or represented by proxy at the Annual Meeting and entitled to vote on the subject matter. Abstentions will be counted as votes "AGAINST" this proposal.

**The Board recommends you vote FOR the ratification of the appointment of** <br>**PricewaterhouseCoopers LLP as the independent registered public accounting firm for the** <br>**Company for the fiscal year ending December 31, 2026.**<br>

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| DT Midstream | **25** | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**

## Audit Committee Report
*The following Audit Committee Report does not constitute soliciting material and shall not be deemed filed or incorporated by reference into any filing under the Securities Act of 1933, as amended (the "Securities Act") or the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent the Company specifically incorporates such information by reference.* 

The Audit Committee has reviewed and discussed with DT Midstream's management, internal auditors, and PwC the audited consolidated financial statements and the reporting process, including the systems of internal controls, of DT Midstream contained in DT Midstream's Annual Report on Form 10-K for the year ended December 31, 2025. The Audit Committee has also discussed with PwC the matters required to be discussed by the applicable requirements of the Public Company Accounting Oversight Board and the SEC.

The Audit Committee has received and reviewed the written disclosures and the letter from PwC required by applicable requirements of the Public Company Accounting Oversight Board regarding the independent accountant's communications with the Audit Committee concerning independence, and has discussed with PwC its independence from management and DT Midstream.

Based on the review and discussions referred to above, the Audit Committee recommended to the Board of Directors that the audited consolidated financial statements be included in DT Midstream's Annual Report on Form 10-K for the year ended December 31, 2025 for filing with the SEC.

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| **Members of the Audit Committee**  | **Members of the Audit Committee**  | **Members of the Audit Committee**  |
| **Elaine Pickle (Chairperson)** | **Stephen Baker** | **Peter Tumminello** |

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| DT Midstream | **26** | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**

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| 3  | **Proposal:** <br>**Approval, on an Advisory (Non-Binding) Basis, of the Compensation of our Named Executive Officers** |

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Section 14A of the Securities Exchange Act of 1934 requires the Company to provide stockholders with an opportunity to vote to approve, on an advisory basis, the compensation of our Named Executive Officers as described in the "Compensation Discussion and Analysis" ("CD&A") section of this proxy statement and in the tabular and narrative disclosure regarding Named Executive Officer compensation, all contained under the heading "Executive Compensation" in this proxy statement.

The Company's executive compensation program is designed to include elements of cash and equity-based compensation to motivate and reward executives who achieve short-term and long-term corporate and financial objectives leading to the success of the Company. We emphasize competitive, performance-based compensation to attract and retain talented executives and align the interests of our executives with those of our stockholders.

Our executive compensation programs have been important in driving the Company's success in achieving its corporate and financial objectives by tying executive compensation to achieving very specific goals in each of our key priority areas.

The O&C Committee employs high standards of corporate governance when implementing and reviewing our executive compensation programs. The O&C Committee ensures independence of committee members and compensation consultants, avoids conflicts of interest and provides stockholder disclosure in accordance with SEC and NYSE requirements.

For these reasons, the Board recommends that stockholders vote in favor of the following resolution:

"RESOLVED, that the stockholders approve, on an advisory basis, the overall executive compensation paid to the Named Executive Officers of the Company, as described in the Compensation Discussion and Analysis and the tabular and narrative disclosure regarding Named Executive Officer compensation contained in this proxy statement."

Because this vote is advisory, it will not be binding upon the Company or the Board. The O&C Committee will take into account the outcome of the vote when considering future executive compensation arrangements.

**The Board recommends you vote FOR the proposal to approve executive compensation.**<br>

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| DT Midstream | **27** | 2026 Proxy Statement |

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| 4 | **Stockholder Proposal:** <br>**Shareholder Right to Act**<br>**By Written Consent** |

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*The Board welcomes dialogue on the topics presented in the Rule 14a-8 stockholder proposal presented below. We strive to communicate proactively and transparently on these and other issues of interest to the Company and its stockholders. The following stockholder proposal may contain assertions about the Company that we believe are incorrect. The Board has not attempted to refute all such assertions. However, the Board has considered the proposal and recommends a vote based on the specific reasons set forth in the Board response. The Board urges stockholders to read this proxy statement and the Annual Report as well as the other information presented on the Company's website.* 

*Mr. John Chevedden, located at 2215 Nelson Avenue, No. 205, Redondo Beach, California 90278, has been the beneficial owner of more than $2,000 in shares of the Company's common stock for at least three years prior to submission of its proposal and has notified the Company of his intention to present the following proposal at the Annual Meeting. The Company is not responsible for the accuracy or content of the proposal, which is presented as received from the proponent in accordance with SEC rules.*

#### Proposal 4 – Shareholder Right to Act By Written Consent
![](ny20038388x1_shareholder.jpg)

Shareholders request that the board of directors take the necessary steps to permit written consent by the shareholders entitled to cast the minimum number of votes that would be necessary to authorize an action at a meeting at which all shareholders entitled to vote thereon were present and voting (without any unnecessary restriction based on length of stock ownership or the method by which DT Midstream shareholders hold their DTM shares). This includes shareholder ability to initiate any appropriate topic for written consent.

DTM shareholders have a particular need for the right to act by written consent because it is considerably more difficult than necessary for DTM shareholders to call for a special shareholder meeting.

Shareholders acting by written consent and calling for a special shareholder meeting are 2 means that shareholders of a company can use to put forth a proposal on a timely basis without waiting for the annual shareholder meeting.

Delaware law considers it reasonable for 10% of shareholders to call for a special shareholder meeting - yet DTM made the threshold 25% of shareholders based on all shares outstanding and then excluded all DTM shares that were not long-term shares, which excludes the DTM shares most likely to call for a special shareholder meeting.

Acting by written consent is hardly ever used by shareholders but the main point of having a right to act by written consent is that it gives shareholders greater standing to engage effectively with management when DTM is underperforming.

Please vote yes:

**Shareholder Right to Act by Written Consent -** 

**Proposal 4**

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| DT Midstream | **28** | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**

#### VOTE REQUIRED
Approval of Proposal 4 requires the affirmative vote of the holders of a majority of the voting power of the Company's common stock present or represented by proxy at the Annual Meeting and entitled to vote on the subject matter. For Proposal 4, an abstention will have the same effect as a vote against the proposal because an abstention represents a share entitled to vote.

#### The Board of Directors Recommends That You Vote AGAINST the Proposal for the Reasons set below:

#### BOARD RESPONSE
After careful deliberation, the Board has concluded that adopting a stockholder right to act by written consent is neither necessary nor in the best interests of the Company and its stockholders as it would allow a small minority to initiate action without prior notice or disclosure to other stockholders, depriving DT Midstream stockholders from being consulted on significant matters concerning their investment in DT Midstream.

The Company believes that every stockholder's vote is important and deserves consideration. Allowing action by written consent, without holding stockholder meetings, would permit a small group of stockholders to initiate action without any prior notice or disclosure to other stockholders. This concern is particularly significant, given that stockholders with short-term or special interests would be given the opportunity to unilaterally approve actions that are not in the best interests of all stockholders. Action by written consent is less transparent, and deprives stockholders from the opportunity to deliberate, exchange views or inquiries, and consider arguments for and against any action. Permitting stockholder action by written consent could also lead to substantial confusion and disruption for stockholders and management, with potentially multiple, even conflicting, written consents being solicited by multiple stockholder groups concurrently.

**Stockholders' existing ability to call special meetings, combined with the proxy access right provided in our Bylaws, are sufficient and appropriate mechanisms for stockholder action** 

We believe our special meeting provision and proxy access right provide stockholders access and standing to raise important matters while also protecting the interests of all DT Midstream stockholders. The Company's Bylaws allow stockholders of record of at least 25% of the outstanding shares of the Company's Voting Stock (as defined in the Certificate of Incorporation) for a minimum of one full year prior to the date of such request to request to call a special meeting. The right to request to call a special meeting empowers stockholders to raise matters of extraordinary concern on an expedited basis instead of waiting for an annual stockholder meeting. The Board believes that the 25% ownership threshold and one-year holding period to request a special meeting of stockholders strikes a reasonable balance between enhancing stockholder rights and protecting against the risk that a small minority of stockholders, including stockholders with special interests, could request that the Company call one or more special meetings of stockholders that could result in unnecessary financial expense and disruption to the Company's business. In addition, the Company has implemented a proxy access stockholder right for stockholders to nominate candidates for the Board and have them included in the Company's proxy statement. This right permits long-term stockholders of the Company a practical mechanism to raise concerns and influence board composition.

#### DT Midstream's robust corporate governance structure protects stockholder rights and ensures director accountability
The Board believes that this proposal should be viewed in the context of our robust corporate governance and track record of responsiveness to stockholder concerns. Our practices and policies, which enhance Board accountability, include:

&nbsp;&nbsp;&nbsp;&nbsp;• Stockholders owning at least 25% of the outstanding shares of the Company's Voting Stock (as defined in the Certificate of Incorporation) for a minimum of one full year prior to the date of such request have the right to request to call a special meeting

&nbsp;&nbsp;&nbsp;&nbsp;• The Company's proxy access provisions permit stockholders that meet certain procedural requirements to include their own nominees for director in the Company's proxy materials

&nbsp;&nbsp;&nbsp;&nbsp;• Our Board is comprised of a majority (5/7) of independent directors

&nbsp;&nbsp;&nbsp;&nbsp;• Directors are elected annually

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| DT Midstream | **29** | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**
&nbsp;&nbsp;&nbsp;&nbsp;• Our governance documents do not include any supermajority vote requirements

&nbsp;&nbsp;&nbsp;&nbsp;• The Company does not have a stockholder rights plan in place

In addition, the Company maintains regular, year-round engagement with its stockholders regarding strategy, governance, compensation and sustainability matters.

In light of stockholders' existing right to request to call special meetings at a 25% ownership threshold and one-year holding period, as well as the Board's evident commitment to effective and robust corporate governance, the Board believes that adoption of this stockholder proposal is unnecessary and not in the best interests of DTM and its stockholders.

**The Board recommends you vote AGAINST the proposal titled "Shareholder Right to Act By Written Consent."** <br>

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| DT Midstream | **30** | 2026 Proxy Statement |

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## Management

#### Executive Officers
The following table and accompanying narrative present information, as of March 11, 2026, regarding the individuals who serve as executive officers of DT Midstream.

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| **Name** | **Age** | **Position with DT Midstream**  |
| **David Slater** | 60 | Executive Chairman and Chief Executive Officer and Director\*  |
| **Christopher Zona** | 54 | President and Chief Operating Officer  |
| **Jeffrey Jewell** | 58 | Executive Vice President and Chief Financial Officer  |
| **Wendy Ellis** | 61 | Executive Vice President, General Counsel and Corporate Secretary  |
| **Melissa Cox** | 56 | Executive Vice President and Chief Administrative Officer |

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\* For biography, see the section titled "Our Board of Directors."

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| ![](ny20058512x1_zona.jpg) <br>**Christopher Zona** | &nbsp;&nbsp;&nbsp;&nbsp;Mr. Zona has served as our President since January 28, 2026, and Chief Operating Officer since the Spin-Off. He has over 30 years of experience in the energy industry, where he has worked in operational, engineering, construction and business development roles. Beginning in 2019, Mr. Zona served as the executive vice president of the DTE Energy Midstream Business. Mr. Zona has played key roles in the acquisition of the Appalachia Gathering System's and Stonewall Gas Gathering Lateral Pipeline's assets, bringing the NEXUS Gas Pipeline into service, development and execution of the Bluestone Gathering Lateral Pipeline and Susquehanna Gathering System businesses, expansion of the Washington 10 Storage Complex and completing the DTE Energy Midstream Business' first solo FERC project with the Birdsboro Pipeline.  |
| ![](ny20058512x1_zona.jpg) <br>**Christopher Zona** | &nbsp;&nbsp;&nbsp;&nbsp;After joining DTE Energy in 2006, Mr. Zona has held positions of increasing responsibility, scope and breadth in the business development and project development of the DTE Energy Midstream Business. He started as manager of business development from 2006 to 2008 and was subsequently promoted to director of business development from 2008 to 2014. Mr. Zona was then promoted to vice president, planning, engineering and business development in 2014, and then to senior vice president, project development in 2016.  |
| ![](ny20058512x1_zona.jpg) <br>**Christopher Zona** | &nbsp;&nbsp;&nbsp;&nbsp;Prior to joining DTE Energy, Mr. Zona held various engineering, planning, construction and operations management positions for ANR Pipeline Company and SEMCO Energy Gas Company relating to gathering, transmission and storage operations. Mr. Zona earned a Bachelor of Science degree in chemical engineering from the University of Detroit. |

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#### **TABLE OF CONTENTS**

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| ![](ny20058512x1_jewell.jpg) <br>**Jeffrey Jewell** | &nbsp;&nbsp;&nbsp;&nbsp;Mr. Jewell has served as our Executive Vice President and Chief Financial Officer since the Spin-Off. He has over 30 years of experience in the energy industry, where he has worked in financial, accounting and risk management roles. Prior to the Spin-Off, Mr. Jewell was vice president, treasurer and chief risk officer for DTE Energy, a role that he held since 2019. He served as vice president and controller from 2014 to 2019, and as chief accounting officer from 2018 to 2019, for DTE Energy.  |
| ![](ny20058512x1_jewell.jpg) <br>**Jeffrey Jewell** | &nbsp;&nbsp;&nbsp;&nbsp;Prior to joining DTE Energy, Mr. Jewell held various financial and risk management leadership positions with Ernst & Young U.S. LLP, Koch Industries, Inc. and Duke Energy Corporation. Mr. Jewell is also a retired Captain of the United States Army Reserves. Mr. Jewell is a board member of the Michigan Crohn's and Colitis Foundation, and is on the advisory board of the University of Michigan-Dearborn College of Business. Mr. Jewell earned a Bachelor of Business Administration degree in accounting and a Bachelor of Science degree in agricultural economics from Texas A&M University and a Master of Finance degree from the University of Michigan-Dearborn. Mr. Jewell also is a NACD Certified Director. |

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| ![](ny20058512x1_ellis.jpg) <br>**Wendy Ellis**  | &nbsp;&nbsp;&nbsp;&nbsp;Ms. Ellis has served as our Executive Vice President, General Counsel and Corporate Secretary since the Spin-Off. She has over 30 years of experience in the energy industry, where she served in various legal and general counsel capacities. In 2020, Ms. Ellis was appointed executive director and general counsel for the DTE Energy Midstream Business, and, from 2019 to the Spin-Off, she served as executive director and general counsel for DTE Energy's power and industrial businesses. Ms. Ellis also served as executive director and general counsel for DTE Electric Company, a wholly owned subsidiary of DTE Energy, from 2016 to 2019. From 2009 to 2016, Ms. Ellis was director and general counsel of DTE Gas Company, a wholly owned subsidiary of DTE Energy, and the DTE Energy Midstream Business with responsibility for all legal matters relating to commercial contracts and transactions at DTE Energy. After joining DTE Energy in 1994, at various times, she has also had responsibility for the company's litigation, employment and labor practice groups as an expert attorney, legal director and associate general counsel.  |
| ![](ny20058512x1_ellis.jpg) <br>**Wendy Ellis**  | &nbsp;&nbsp;&nbsp;&nbsp;Prior to joining DTE Energy, Ms. Ellis practiced at the Detroit law firm of Clark, Klein and Beaumont, P.L.C. (now Clark Hill PLC). Ms. Ellis is a member of the board of trustees of Crossroads of Michigan, a social service outreach agency located in Detroit. Ms. Ellis received a Bachelor of Arts degree in business management from Olivet College and a Juris Doctor degree from Northwestern University School of Law. Ms. Ellis also is a NACD Certified Director. |

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| ![](ny20058512x1_mcox.jpg) <br>**Melissa Cox**<br>| &nbsp;&nbsp;&nbsp;&nbsp;Ms. Cox has served as our Executive Vice President and Chief Administrative Officer since March 2024. Prior to this role, Ms. Cox served in several leadership roles throughout her career with the Company, including as Senior Vice President of Administration, a role she held from April 2022 through March 2024, and as Vice President of Information Technology beginning in July 2021. She also served as IT Director for DTE Energy from January 2015 through June 2021. Ms. Cox is also the President of the DT Midstream Foundation. Her experience spans automotive, banking, and energy industries and has focused on innovative solutions that accelerate time to value. Ms. Cox is a graduate of Oakland University where she earned a Bachelor of Science in Management Information Systems. |

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| DT Midstream | **32** | 2026 Proxy Statement |

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## Executive Compensation

#### Compensation Discussion and Analysis
The following narratives and tables discuss the compensation paid in 2025 to our Chief Executive Officer, Chief Financial Officer and our other three most highly compensated executive officers during 2025, whom we refer to collectively as our "Named Executive Officers" or "NEOs." Our Named Executive Officers were determined based on the compensation earned during 2025, as shown in the "Summary Compensation Table" below. Our Named Executive Officers during 2025 were:

&nbsp;&nbsp;&nbsp;&nbsp;• David Slater, Executive Chairman and Chief Executive Officer

&nbsp;&nbsp;&nbsp;&nbsp;• Christopher Zona, President and Chief Operating Officer

&nbsp;&nbsp;&nbsp;&nbsp;• Jeffrey Jewell, Executive Vice President and Chief Financial Officer

&nbsp;&nbsp;&nbsp;&nbsp;• Wendy Ellis, Executive Vice President, General Counsel and Corporate Secretary

&nbsp;&nbsp;&nbsp;&nbsp;• Melissa Cox, Executive Vice President and Chief Administrative Officer

#### Executive Summary
Our compensation philosophy is designed to align the interests of our executive officers with those of our stockholders by providing pay that is directly linked to the achievement of performance goals established to foster the creation of sustainable long-term stockholder value. At the root of our compensation philosophy is the use of variable, at-risk compensation that connects pay outcomes with superior results and growth execution.

The Company believes in executive compensation that is competitive with our peers, has meaningful performance components, and has equity-based elements to encourage executives to maintain an appropriate ownership interest in the Company. Our performance-based compensation programs result in most of the compensation of our Chief Executive Officer being linked to the achievement of a combination of short-term and long-term Company and personal goals, and stockholder value creation.

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| DT Midstream | **33** | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**
The following elements comprise the total compensation awarded to our Named Executive Officers:

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| **Elements of Compensation** | **How this Element Serves the Company's Objectives**  |
| Base Salary | Provides a stable, fixed source of income that reflects an executive's job responsibilities, experience, value to the Company, and demonstrated performance. <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>The Company generally references median base salaries for our executive compensation peer group, taking into account differences in company size within the executive compensation peer group.  |
| Annual Incentives | Intended to compensate individuals yearly based on the achievement of specific near-term, annual goals, which are established at the beginning of each year and approved by the O&C Committee. <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>The Board and management have identified several priority areas that management and the Board discuss regularly when reviewing Company performance. Our performance measures for annual incentive awards are the measurements that the Board uses to track progress in these key priority areas. Achievement of these performance objectives is a critical measure of the Company's progress towards its goal of providing a comprehensive set of high-performing midstream pipeline, storage and gathering services to our customers.  |
| Long-Term Incentives | Used to align executive actions with long-term management and stockholder objectives, providing rewards consistent with the creation of stockholder value. <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>Our plan is also designed to help retain executives over time and ensure they have a strong sense of ownership in the Company. |

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#### 2025 Advisory Vote to Ratify Named Executive Officers' Compensation
At the Company's 2025 annual meeting, our stockholders were asked to approve, on an advisory basis, the compensation of the Named Executive Officers. Advisory votes in favor of our executive compensation program were cast by approximately 95.6% of the shares of common stock counted as present and entitled to vote at such meeting. We have considered this voting result, and as explained below, our compensation policies and decisions continue to be focused on driving our strategy and financial performance and aligning the interests of management with the interests of stockholders.

#### Pay-for-Performance Alignment
The Company's compensation programs are designed to clearly align performance objectives for our Named Executive Officers with the interests of stockholders and with management's system of priorities. Our executive compensation philosophy is to motivate and reward executives who achieve short-term and long-term corporate and financial objectives leading to the success of the Company. We will continue to emphasize performance-based compensation for results that are consistent with stockholder and customer interests. The main objectives underlying this philosophy are:

&nbsp;&nbsp;&nbsp;&nbsp;• **Competitive**: Compensation must be competitive to attract and retain talented executives – data from peer group companies are taken into consideration when analyzing our compensation practices and levels;

&nbsp;&nbsp;&nbsp;&nbsp;• **Performance-based**: Compensation should have meaningful performance components – a portion of an executive's total compensation opportunity is linked to predefined short-term and long-term corporate and financial objectives; and

&nbsp;&nbsp;&nbsp;&nbsp;• **Ownership culture**: Compensation must include equity-based elements to encourage executives to have an ownership interest in the Company.

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#### **TABLE OF CONTENTS**

#### What We Do and What We Don't Do
Our compensation programs are competitive and well-governed. We adopt best practices that make sense for our Company and industry, and avoid pay practices that are inconsistent with our pay-for-performance structure.

#### What We Do

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| ✔ | **Multiple performance metrics**: We use multiple absolute and relative performance measures in our short-term and long-term plans that link compensation to our corporate objectives and maximize stockholder value  |

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| ✔ | **Majority of CEO pay at risk**: We make the majority of our Chief Executive Officer's compensation "at risk" to further tie compensation to performance and stockholder interests  |

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| ✔ | **Independent oversight**: Our O&C Committee is comprised of all independent directors and our compensation consultant is independent  |

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| ✔ | **Clawback Policy**: Our clawback policy allows the Company to recover incentive-based compensation from our executive officers in the event of an accounting restatement  |

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| ✔ | **Ownership guidelines**: Our executives and directors own Company shares in compliance with robust stock ownership requirements  |

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| ✔ | **Ongoing program evaluation**: We review and update our peer groups and benchmarking on an annual basis to make sure our compensation remains competitive and aligned with evolving best practices  |

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| ✔ | **Stockholder engagement**: We engage with stockholders to seek input about our compensation practices and policies  |

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#### What We Don't Do
✘ No single-trigger change-in-control payments

✘ No excessive perquisites

✘ No tax gross ups on change-in-control payments

✘ No guaranteed bonuses

✘ No hedging of Company securities for officers or directors

✘ No pledging of Company securities for officers or directors

#### Role of the Organization and Compensation Committee
The O&C Committee is composed entirely of independent directors. Generally, the O&C Committee is responsible for our overall executive total compensation philosophy, structure, practices and related risks. The O&C Committee's responsibilities are more fully detailed in its charter. The O&C Committee continually monitors the executive compensation program and adopts changes to reflect the dynamic marketplace in which we compete for talent. To the extent necessary, the O&C Committee also works with other Board committees to review or approve reports, awards, and other matters relating to compensation. In addition, the O&C Committee determines and approves the Chief Executive Officer's compensation and approves the compensation of certain other executives.

The O&C Committee uses information from several external sources to monitor and achieve an executive compensation program that supports our business goals and attracts executives whose performance will be measured against those goals. External information enables the O&C Committee to maintain impartial decision-making regarding performance and pay. The O&C Committee annually reviews each component of the Named Executive Officers' compensation and, based on input from management and a review of competitive data from peer group companies (as discussed below), the O&C Committee believes that the current structure is appropriately balanced and competitive to accomplish the important tasks of recruiting, retaining, and motivating talented executives in the energy industry in which we compete.

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#### **TABLE OF CONTENTS**

#### Independent Review of Compensation Program
The O&C Committee directly employs an outside consulting firm, Meridian Compensation Partners LLC ("Meridian"), to advise the O&C Committee on various executive compensation matters, including current compensation trends, and to provide objective recommendations as to the design of our executive compensation program. Meridian reports directly to the O&C Committee. Use of an independent outside consultant is an important component of the compensation setting process, as it enables the O&C Committee to make informed decisions based on market data and practices.

A representative from Meridian attends O&C Committee meetings, meets with Committee members in executive session, consults with the members as required, and provides input regarding the Chief Executive Officer's compensation and performance.

Meridian has served as the O&C Committee's outside consultant since July 2021. The O&C Committee annually reviews the independence of its compensation consultant and has determined Meridian to be an independent consultant. Meridian has no affiliations with any of the Named Executive Officers or members of the Board other than in its role as an outside consultant. The lead consultant and partner in charge for Meridian, who provided executive compensation consulting services to the O&C Committee, did not provide any other services to the Company during 2025.

#### Management's Role
Our management works closely with the O&C Committee in the executive compensation process. Excluding the Chief Executive Officer's compensation, management's responsibilities include:

&nbsp;&nbsp;&nbsp;&nbsp;• Recommending performance measures and metrics that are formulated based on our corporate strategy and priorities;

&nbsp;&nbsp;&nbsp;&nbsp;• Reporting executive performance evaluations;

&nbsp;&nbsp;&nbsp;&nbsp;• Recommending base salary levels and other compensation, including equity awards; and

&nbsp;&nbsp;&nbsp;&nbsp;• Recommending appointment of executives.

The Chief Executive Officer's compensation is determined solely by the O&C Committee, which bases its decisions on performance and market studies along with participation and recommendations from its independent outside consultant.

#### Executive Compensation Peer Group Assessment
Each component of executive compensation (see the section titled "Key Components of Executive Compensation" below) is compared, measured and evaluated against an executive compensation peer group of companies.

The O&C Committee reviews the executive compensation peer group annually and updates the companies included in the group as needed. The 2025 executive compensation peer group was approved by the O&C Committee in September 2024. This peer group, which was applicable for compensation decisions with respect to compensation in 2025, consists of the companies listed below. The executive compensation peer group consists primarily of oil and gas storage and transportation companies, selected based on size, complexity and the quality of publicly available data with respect to these companies. The O&C Committee reviews the executive compensation peer group data when making compensation decisions relating to the Named Executive Officers and the Company's mix of compensation components.

---

| | | | |
|:---|:---|:---|:---|
|  | **Executive Compensation Peer Group**  | **Executive Compensation Peer Group**  | **Executive Compensation Peer Group**  |
| • | Antero Midstream Corporation | • | ONEOK, Inc.  |
| • | EnLink Midstream, LLC | • | Plains All American Pipeline, LP  |
| • | Equitrans Midstream Corporation | • | Summit Midstream Corporation  |
| • | Genesis Energy, LP | • | Sunoco LP  |
| • | HF Sinclair Corporation | • | Targa Resources Corp.  |
| • | Kinetik Holdings Inc. | • | Western Midstream Partners, LP  |
| • | NuStar Energy LP | • | The Williams Companies, Inc. |

---

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|:---|:---|:---|
| DT Midstream | **36** | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**
The O&C Committee retained Meridian to conduct a market study covering compensation practices for similar executive officer positions in the executive compensation peer group. A market study was completed in October 2024, and the results from this market study were used by the O&C Committee as a factor in determining the compensation for our Named Executive Officers during 2025.

#### Key Components of Executive Compensation
The key components of the compensation program include the following:

&nbsp;&nbsp;&nbsp;&nbsp;• Base Salary;

&nbsp;&nbsp;&nbsp;&nbsp;• Annual and Long-Term Incentives;

&nbsp;&nbsp;&nbsp;&nbsp;• Retirement and Other Benefits; and

&nbsp;&nbsp;&nbsp;&nbsp;• Post-Termination Benefits

While the programs and pay levels reflect differences in job responsibilities and experience, the structure of the compensation and benefits program is applied consistently to our Named Executive Officers, including the Chief Executive Officer. Differences in compensation between the Chief Executive Officer and the other Named Executive Officers are due, in part, to an analysis of peer group benchmark data, as well as differences in the responsibilities and experience of each Named Executive Officer. We review each element of total compensation, both individually and on a combined basis, for each Named Executive Officer, and make adjustments as appropriate based on these comparisons. The following is a more detailed discussion of the components of the Company's executive compensation program:

#### Base Salary
The objective of base salary is to provide a stable, fixed source of income that reflects an executive's job responsibilities, experience, value to the Company, and demonstrated performance. When setting individual base salary levels, we consider several factors, including (i) the market reference point for the executive's position, (ii) the responsibilities of the executive's position, (iii) the experience and performance of the executive and (iv) retention issues. Market reference points target the median for most positions, adjusted for differences in company size within the executive compensation peer group. In addition, we establish midpoints for each executive group level for determining base salary for those executives whose jobs cannot be easily matched in the marketplace. These midpoints are consistent with the market reference points for other executives in the same executive group. We review these midpoints annually to ensure they are consistent with the market and make salary adjustments, when appropriate.

For 2025, the O&C Committee set the annual base salary amounts for our Named Executive Officers as follows: Mr. Slater—$861,120; Mr. Zona—$545,000; Mr. Jewell—$520,000; Ms. Ellis—$480,000; and Ms. Cox—$445,000.

#### Annual and Long-Term Incentives
We have two primary types of incentives that reward our executives for performance. The incentives are designed to tie compensation to performance and align our executives' interests with those of the Company's stockholders. Our annual incentives allow us to reward executives with annual cash bonuses for performance against pre-established objectives based on work performed in the prior year. Our long-term incentives allow us to grant executives long-term equity incentives to encourage continued employment with DT Midstream and to accomplish predefined long-term performance objectives and to create stockholder alignment.

We believe the current mix among base salary, annual incentives, and long-term incentives is appropriately set to provide market-competitive compensation when Company performance warrants. The mix is more heavily weighted toward incentive compensation at higher executive levels within the Company. The interplay between the annual incentives and the long-term incentives provides a balance to motivate executives to achieve our business goals and objectives and to properly reward executives for the achievement of such goals and objectives.

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| DT Midstream | **37** | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**

#### Annual Incentives
The objective of the annual incentives is to compensate individuals yearly based on the achievement of specific annual goals and tie compensation to near-term performance. Under the terms of the DT Midstream, Inc. Annual Incentive Plan (the "Annual Incentive Plan"), participating executives and other select employees may receive annual cash awards based on performance compared against pre-established Company, business unit and individual objectives. Objectives that management proposes are reviewed and approved or revised by the O&C Committee. The objectives include performance measures in several categories that are critical to our success. The weights, which can change from year to year, are determined based on the Company's key priorities and areas of focus for the upcoming year. The final awards, if any, are paid after the O&C Committee approves the final results of each objective.

For 2025, the O&C Committee approved a 2025 Annual Incentive Plan Scorecard, with earned executive bonuses determined as follows:

&nbsp;&nbsp;&nbsp;&nbsp;• The executive's most recent year-end base salary is multiplied by a target award percentage to arrive at the target award

&nbsp;&nbsp;&nbsp;&nbsp;• The target award is multiplied by a corporate performance modifier, ranging from 0% to 200%, that is determined based on final results compared to threshold, target and maximum levels for each objective

&nbsp;&nbsp;&nbsp;&nbsp;• The result is the earned Annual Incentive Plan award

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| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Year End** <br>**Salary** | **x** | **Target Award** <br>**Percentage** | **x** | **Corporate** <br>**Performance** <br>**Modifier** <br>**0% to 200%** | **=** | **Earned AIP Award** |

---

Each objective has a threshold, target, and maximum level. The Company must attain a minimum level of achievement (threshold) for an objective before any compensation is payable with respect to that objective. Threshold performance for each objective results in a payout of 25% of target and the maximum established for each level (or better) will result in a payment of 200% of target. The target award levels for the Named Executive Officers for 2025 were as follows: Mr. Slater, 140% of base salary; Mr. Zona, 110% of base salary; Mr. Jewell, 100% of base salary; Ms. Ellis, 85% of base salary; and Ms. Cox, 75% of base salary.

The financial performance measure, adjusted EBITDA, was chosen as an indicator of the Company's financial strength as adjusted to align with the Company's budget. With respect to business operations, the Operating Performance, Compressor Reliability and Treating Plant Run Time measures were chosen to enhance the Company's operational excellence and together focus on enhancing the Company's pipeline and compression assets and meeting construction project timelines and approved budget goals. Business Development measures such as the advancement of projects, executing new business opportunities and business portfolio returns were chosen to align with stockholder interests in growing the business. Finally, certain environmental, social, governance and safety measures were included to ensure our Company is a safe and engaging place to work.

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|:---|:---|:---|
| DT Midstream | **38** | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**
For 2025, the performance objectives and the related weightings, thresholds, targets, maximums, and results for calculating the Named Executive Officers' pre-adjusted annual incentive award amounts were as follows:

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| | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| **Category** | **Weight** | **Measures** | **Sub-**<br>**Measure** <br>**Weight** | **Threshold** | **Target** | **Maximum** | **Result** | **Payout** | **Weighted**<br>**Average**<br>**Payout**  |
| **Financial Performance** | 60% | Adjusted <br>EBITDA<sup>(1)</sup> | 60% | $1,095\* | $1,125\* | $1,155\* | $1,138\* | 143.30% | 143.30%  |
| **Business Development** | 15% | Business <br>Development | 15% | See below | See below | See below | See below | 157.00% | 23.60%  |
| **Operating** <br>**Excellence** | 15% | Operating <br>Performance | 10% | See below | See below | See below | See below | 132.70% | 13.30%  |
| **Operating** <br>**Excellence** | 15% | Compressor <br>Reliability | 2.5% | 96.5% | 97.5% | 98.5% | 98.42% | 191.70% | 4.80%  |
| **Operating** <br>**Excellence** | 15% | Treating Plant Run <br>Time | 2.5% | 98.5% | 99.0% | 98.5% | 100.00% | 200.00% | 5.00%  |
| **Environmental,** <br>**Social and Governance** | 10% | ESG Initiatives | 5% | See below | See below | See below | See below | 200.00% | 10.00%  |
| **Environmental,** <br>**Social and Governance** | 10% | OSHA <br>Recordable <br>Incident Rate | 5% | 1.63 | 0.92 | 0.71 | 0.71 | 200.00% | 10.00%  |
| **Total** | **Total** | **Total** | **Total** | **Total** | **Total** | **Total** | **Total** | **Total** | 152.62% |

---

\* In millions

&nbsp;&nbsp;&nbsp;&nbsp;(1) Adjusted EBITDA reflects Company operating earnings before expenses for interest, taxes, depreciation and amortization, gains or losses from financing activities and includes the proportional share of net income (excluding interest, taxes, depreciation and amortization) from our equity method investees and excludes the proportional share of depreciation and amortization attributable to minority interests in our consolidated subsidiaries.

Business Development: 15% of the annual incentive award is based on achievement of various business development goals as approved by the O&C Committee, including maximizing available capacity, long-term contract returns, the advancement of projects, executing new business opportunities and business portfolio returns. See the table above for the payout for this performance measure.

Operating Performance: 10% of the annual incentive award is based on achievement of operational performance goals as approved by the O&C Committee, including meeting in-service timing and approved budget goals for construction and expansion projects. See the table above for the payout for this performance measure.

ESG Initiatives: 5% of the annual incentive award is based on achievement of certain environmental, social and governance goals as approved by the O&C Committee, including publishing a sustainability report, maintaining focus on cybersecurity governance and advancing our Know, Support, and Respect culture. See the table above for the payout for this performance measure.

#### Long-Term Incentives
Long-term incentive awards include a combination of time-based and performance-based equity awards that vest over a three-year period. Through these awards, the O&C Committee uses our program to align executives' interests directly with those of our stockholders over the long-term. The long-term incentives are awarded under the DT Midstream, Inc. Long-Term Incentive Plan (the "DT Midstream LTIP"). Other than in exceptional cases, such as promotions, new hires, and corporate transactions, long-term incentive awards are granted in the first quarter of the fiscal year when the O&C Committee determines salary levels and bonus programs for the new fiscal year.

Our executives receive long-term incentive grants based upon a target percentage of base salary. The target award levels for the Named Executive Officers for 2025 were as follows: Mr. Slater, 750% of base salary; Mr. Zona, 390% of base salary; Mr. Jewell, 360% of base salary; Ms. Ellis, 260% of base salary; and Ms. Cox, 140% of base salary.

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| DT Midstream | **39** | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**
Consistent with past practice, the value composition of the long-term incentive grants for 2025 was as follows:

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| | |
|:---|:---|
| **Grant Type** | **Percent of Annual Award**  |
| **Performance Shares** | 70%  |
| **Restricted Stock Units** | 30% |

---

This mix is designed to provide incentives to executives for creating long-term stockholder value through strong financial and operating performance while also providing a portion as a time-based retention incentive.

*Performance Shares* 

For 2025, the O&C Committee selected performance measures that it viewed as being key drivers of the long-term financial health of the Company and generators of year-over-year stockholder value: total stockholder return ("TSR") versus the Company's long-term incentive plan peer group and leverage ratio. Performance is measured over the three-year period that commenced on December 31, 2024 and will end on December 31, 2027. TSR versus our long-term incentive plan peer group is calculated based on simple average stock prices in the first and last months of the performance period (*e.g.*, December 2024 and December 2027). Leverage ratio is calculated as total Company net debt (including long-term and short-term debt and cash and cash equivalents and excluding debt held by unconsolidated investees) *divided by* adjusted EBITDA.

The long-term incentive plan peer group, which is applicable for performance-based long-term incentive compensation awards granted to our Named Executive Officers in 2025, was approved by the O&C Committee in December 2024 and consists of the companies listed below.

---

| | | | |
|:---|:---|:---|:---|
|  | **Long-Term Incentive Plan Peer Group**  | **Long-Term Incentive Plan Peer Group**  | **Long-Term Incentive Plan Peer Group**  |
| • | Antero Midstream Corporation | • | National Fuel Gas Company  |
| • | Enbridge, Inc. | • | ONEOK, Inc.  |
| • | Energy Transfer LP | • | Targa Resources Corp.  |
| • | Enterprise Products Partners, LP | • | TC Energy Corporation  |
| • | Kinder Morgan, Inc. | • | Western Midstream Partners, LP  |
| • | MPLX, LP | • | The Williams Companies, Inc. |

---

The performance objectives and the related weightings, thresholds, targets, and maximums applicable to the performance-based long-term incentive awards granted in 2023, whose performance period ended on December 31, 2025, as certified by the O&C Committee on February 17, 2026, were as follows:

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| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| **Category** | **Weight** | **Threshold** | **Target** | **Maximum** | **Result** | **Payout** | **Weighted**<br>**Average**<br>**Payout**  |
| **TSR versus Peers** | 75% | 25<sup>th</sup> Percentile | 50<sup>th</sup> Percentile | 75<sup>th</sup> Percentile | 75<sup>th</sup> Percentile | 200% | 150%  |
| **Leverage Ratio<sup>(1)</sup>** | 25% | 4.20 | 4.07 | 3.94 | 3.83 | 200% | 50%  |
| **Total** | **Total** | **Total** | **Total** | **Total** | **Total** | **Total** | 200% |

---

&nbsp;&nbsp;&nbsp;&nbsp;(1) The threshold, target, and maximum leverage ratio may be adjusted annually by the Board to reflect changes in rating agency methodologies or requirements and significant strategic objectives such as acquisitions and investments. The Board exercised its authority to adjust the Company's leverage ratio for 2024 to exclude debt incurred as a result of the Interstate Pipelines acquisition, which closed on December 31, 2024. This adjustment was approved solely for the 2024 performance period related to long-term incentive awards granted in each of 2022, 2023, and 2024.

*Restricted Stock Units*

To support the retention of our executive officers, each of our executive officers was granted restricted stock units that vest in February 2028, subject to the executive officer's continued employment with the Company through such date.

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|:---|:---|:---|
| DT Midstream | **40** | 2026 Proxy Statement |

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Additionally, the O&C Committee approved one-time grants to certain executive officers as a reward for their critical contributions to the successful completion of the Interstate Pipelines acquisition in 2024 and to further incentivize retention. A one-time grant of 3,530 restricted stock units was awarded to each of Messrs. Zona and Jewell and Ms. Ellis on December 24, 2024, and 7,071 restricted stock units was awarded to Mr. Slater on January 28, 2025. A one-time grant of 2,850 restricted stock units relating to the successful systems integration of such Interstate Pipelines acquisition was awarded to Ms. Cox on January 28, 2026. These restricted stock units vest in March 2028, subject to the executive officer's continued employment with the Company through such date.

*Deferred Compensation* 

Substantially all employees, including our Named Executive Officers, are eligible to participate in the DT Midstream 401(k) Plan, a tax-qualified defined contribution retirement benefit plan (the "DTM 401(k) Plan"). Our Named Executive Officers are also eligible to participate in our nonqualified defined contribution plan, the DT Midstream Supplemental Savings Plan (the "DTM Supplemental Savings Plan").

Providing supplemental retirement and deferred compensation benefits for our executives is in keeping with our philosophy and objectives to attract and retain talented executives. The Post-Employment Benefits Tables and related footnotes beginning on page [53](#tPB59) describe both the tax-qualified and nonqualified retirement benefits for which certain executives are eligible and which are commonly offered by other employers in our peer groups.

For a further description of the nonqualified supplemental retirement and deferred compensation benefits, see the section titled "Nonqualified Deferred Compensation" beginning on page [53](#tNDC56).

#### Post-Termination Agreements
We have entered into severance agreements (the "Severance Agreements") and change-in-control severance agreements (the "Change-In-Control Severance Agreements") with each of the Named Executive Officers. The Change-In-Control Severance Agreements are intended to provide continuity of management in the event there is a change in control of the Company and to align executive and stockholder interests in support of corporate transactions. The important terms of, and the potential payments provided under, the Severance Agreements and Change-In-Control Severance Agreements are described beginning on page [54](#tPTC60).

#### Stock Ownership Policy
In addition to the elements of executive officer compensation described above, we require our Named Executive Officers to hold a number of shares of our common stock having a market value equal to or greater than a multiple of each executive's base salary, to be achieved within five years from entering their roles, as set forth in our stock ownership guidelines. Until the applicable ownership guideline is achieved, each Named Executive Officer is restricted from selling shares acquired from Company equity awards after payment (or withholding) of the exercise price, if applicable, and taxes. Once the applicable ownership guideline is achieved, the aforementioned restriction will no longer apply. If a Named Executive Officer's share ownership subsequently falls back below the applicable ownership guideline and remains below the ownership guideline, the Named Executive Officer will be required to comply again with the restriction until such time as the Named Executive Officer again achieves the ownership guidelines.

Our stock ownership guidelines are shown below. All of our Named Executive Officers hold shares that meet the ownership requirements of the policy.

---

| |
|:---|
| **Position** |
| **Executive Chairman and Chief Executive Officer**<br> 5x  |
| **President and Chief Operating Officer**<br> 3x  |
| **Executive Vice President and Chief Financial Officer**<br> 3x  |
| **Executive Vice President, General Counsel and Corporate Secretary**<br> 3x  |
| **Executive Vice President and Chief Administrative Officer**<br> 3x |

---

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|:---|:---|:---|
| DT Midstream | **41** | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**

#### Compensation Clawback Policy
Our Clawback Policy provides that in the event of an accounting restatement, the O&C Committee, as the committee of the Board responsible for administering the policy, is authorized to recover certain incentive-based compensation paid to an executive officer of the Company on or after October 2, 2023, to the extent such incentive-based compensation was paid on the basis of financial results in respect of any of our three most recently completed fiscal years preceding the restatement.

#### Internal Revenue Code Considerations

#### Limits on Deductibility of Compensation
Section 162(m) of the Internal Revenue Code generally places a $1 million limit on the amount of compensation a publicly held company can deduct in any tax year on compensation paid to each "covered employee" which includes our Named Executive Officers. While the O&C Committee considers tax deductibility as one of many factors in determining executive compensation, the O&C Committee will award or modify compensation that it determines to be consistent with the goals of our executive compensation program even if such compensation is not tax deductible by the Company.

#### Nonqualified Deferred Compensation Programs
We have structured and intend to administer all of our nonqualified deferred compensation programs to comply with Internal Revenue Code Section 409A. Internal Revenue Code Section 409A imposes additional tax penalties on our executive officers for certain types of nonqualified deferred compensation that are not in compliance with the form and timing of elections and distribution requirements of that section.

#### Compensation Committee Report
*The following O&C Committee Report does not constitute soliciting material and shall not be deemed filed or incorporated by reference into any filing under the Securities Act or the Exchange Act, except to the extent the Company specifically incorporates such information by reference.*

The O&C Committee has reviewed and discussed with the Company's management the CD&A included in this proxy statement. Based on this review and these discussions, the O&C Committee has recommended to the Board that the CD&A be included in this proxy statement.

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| | | |
|:---|:---|:---|
| **Members of the Organization and Compensation Committee**  | **Members of the Organization and Compensation Committee**  | **Members of the Organization and Compensation Committee**  |
| Dwayne Wilson (Chairperson) | Angela Archon | Elaine Pickle |

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|:---|:---|:---|
| DT Midstream | **42** | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**

#### Summary Compensation Table
The table below summarizes the total compensation earned by each of the Named Executive Officers for the fiscal years ended December 31, 2025, December 31, 2024 and December 31, 2023.

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| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Name and Principal** <br>**Position** | **Year** | **Salary** <br>**($)<sup>(1)</sup>** | **Stock Awards** <br>**($)<sup>(2)</sup>** | **Non-Equity** <br>**Incentive Plan**<br>**Compensation** <br>**($)<sup>(3)</sup>** | **All Other**<br>**Compensation**<br>**($)<sup>(4)</sup>** | **Total** <br>**($)**  |
| **David Slater**<br>***Executive Chairman*** <br>***and Chief Executive Officer*** | 2025 | 852203 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6282371 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1839938 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;353559 | 9328071  |
| **David Slater**<br>***Executive Chairman*** <br>***and Chief Executive Officer*** | 2024 | 820461 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6192904 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1711269 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;321168 | 9045802  |
| **David Slater**<br>***Executive Chairman*** <br>***and Chief Executive Officer*** | 2023 | 776923 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5414536 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1455700 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;324091 | 7971250  |
| **Christopher Zona**<br>***President and Chief Operating Officer*** | 2025 | 536923 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1736127 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;914957 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;155817 | 3343824  |
| **Christopher Zona**<br>***President and Chief Operating Officer*** | 2024 | 510962 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2287768 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;851501 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;142747 | 3792978  |
| **Christopher Zona**<br>***President and Chief Operating Officer*** | 2023 | 493077 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1471423 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;727850 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;246562 | 2938912  |
| **Jeffrey Jewell**<br>***Executive Vice*** <br>***President and Chief*** <br>***Financial Officer*** | 2025 | 514615 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1637422 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;793624 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;182461 | 3128122  |
| **Jeffrey Jewell**<br>***Executive Vice*** <br>***President and Chief*** <br>***Financial Officer*** | 2024 | 495962 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2178184 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;744030 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;167812 | 3585988  |
| **Jeffrey Jewell**<br>***Executive Vice*** <br>***President and Chief*** <br>***Financial Officer*** | 2023 | 481539 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1427224 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;635413 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;177594 | 2721770  |
| **Wendy Ellis**<br>***Executive Vice President, General Counsel and Corporate Secretary*** | 2025 | 468558 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1095651 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;622690 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;146498 | 2333397  |
| **Wendy Ellis**<br>***Executive Vice President, General Counsel and Corporate Secretary*** | 2024 | 432788 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1577222 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;578690 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;128550 | 2717250  |
| **Wendy Ellis**<br>***Executive Vice President, General Counsel and Corporate Secretary*** | 2023 | 413077 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;865199 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;458546 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;124694 | 1861516  |
| **Melissa Cox**<br>***Executive Vice President and Chief Administrative Officer*** | 2025 | 435577 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;474013 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;509369 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;48445 | 1467404  |
| **Melissa Cox**<br>***Executive Vice President and Chief Administrative Officer*** | 2024 | 400577 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;525781 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;440631 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44877 | 1411866  |
| **Melissa Cox**<br>***Executive Vice President and Chief Administrative Officer*** | 2023 | 366923 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;441455 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;300238 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;41391 | 1150007 |

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&nbsp;&nbsp;&nbsp;&nbsp;(1) The base salary amounts reported include amounts that were voluntarily deferred by the Named Executive Officer into the DTM Supplemental Savings Plan (a nonqualified defined contribution plan). The amounts deferred by each of the Named Executive Officers were as follows:

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| | |
|:---|:---|
| **Name** | **2025 Deferred Amount** <br>**(DTM Supplemental** <br>**Savings Plan)** <br>**($)**  |
| **David Slater** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;33426  |
| **Christopher Zona** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22692  |
| **Jeffrey Jewell** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10169  |
| **Wendy Ellis** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;58962  |
| **Melissa Cox** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;56115 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(2) These amounts represent the grant date fair value of the restricted stock units and performance shares granted in 2025, computed in accordance with ASC Topic 718. All performance shares in this column are reported assuming target performance. The TSR component of the performance shares reported in this column was valued using a Monte Carlo simulation, and the leverage ratio component of the performance shares reported in this column was valued using the grant date stock price. Assuming maximum level of performance, the aggregate grant date values of performance shares granted in 2025 are as follows: Mr. Slater—$7,790,073; Mr. Zona—$2,422,782; Mr. Jewell—$2,285,022; Ms. Ellis—$1,528,968; and Ms. Cox—$661,403.

&nbsp;&nbsp;&nbsp;&nbsp;(3) The 2025 annual incentive amounts, shown in the Non-Equity Incentive Plan Compensation column, paid to the Named Executive Officers were calculated as described beginning on page [38](#tAI) .

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| | | |
|:---|:---|:---|
| DT Midstream | **43** | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**
&nbsp;&nbsp;&nbsp;&nbsp;(4) The following table provides a breakdown of the 2025 amounts reported in this column:

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Name** | **Company** <br>**Contributions to the** <br>**DTM 401(k) Plan**<br>**($)\*** | **Company** <br>**Contributions to the** <br>**DTM Supplemental**<br>**Savings Plans** <br>**($)\*<sup>,</sup>\*\*** | **Additional Benefits**<br>**($)\*\*\*** | **Total** <br>**($)**  |
| **David Slater** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;306568 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7991 | 353559  |
| **Christopher Zona** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;36746 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;118136 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;935 | 155817  |
| **Jeffrey Jewell** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;142488 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;973 | 182461  |
| **Wendy Ellis** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29556 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;116010 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;932 | 146498  |
| **Melissa Cox** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27704 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19854 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;887 | 48445 |

---

\* The contributions reflected in these two columns are predicated on the Named Executive Officers making contributions from eligible compensation to the DTM 401(k) Plan and the DTM Supplemental Savings Plan. The amounts disclosed include Company contributions available to all employees, which include a match predicated on the Named Executive Officers electing to make contributions from eligible compensation to the DTM 401(k) Plan, a non-elective 4% contribution in lieu of providing a defined benefit plan and an annual contribution of $4,000 (contributed in weekly increments) in lieu of providing a retiree health care plan. The total combined Company match contributions with respect to these plans cannot exceed 6% of eligible compensation for each of the Named Executive Officers.

\*\* The DTM Supplemental Savings Plan provides for deferring compensation in excess of various Internal Revenue Code limits imposed on tax qualified plans. DTM Supplemental Savings Plan account balances are paid only in cash to the Named Executive Officer upon termination of employment. The Company also provides a non-elective contribution to compensate several Named Executive Officers, in part, for amounts the participant would have received under a prior employer's nonqualified defined contribution deferred compensation plan.

\*\*\* For each Named Executive Officer, this column represents the value attributable to imputed life insurance benefits paid in 2025. For Mr. Slater, this column also includes athletic club membership dues paid in 2025.

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| | | |
|:---|:---|:---|
| DT Midstream | **44** | 2026 Proxy Statement |

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------

#### Grants of Plan-Based Awards
The following table shows all plan-based awards that the Company granted to the Named Executive Officers during 2025.

---

| | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| **Name** | **Grant Date** | **Committee** <br>**Action**<br>**Date** | **Estimated Future Payouts**<br>**under Non-Equity Incentive**<br>**Plan Awards<sup>(1)</sup>** | **Estimated Future Payouts**<br>**under Non-Equity Incentive**<br>**Plan Awards<sup>(1)</sup>** | **Estimated Future Payouts**<br>**under Non-Equity Incentive**<br>**Plan Awards<sup>(1)</sup>** | **Estimated Future Payouts**<br>**under Equity Incentive Plan**<br>**Awards<sup>(2)</sup>** | **Estimated Future Payouts**<br>**under Equity Incentive Plan**<br>**Awards<sup>(2)</sup>** | **Estimated Future Payouts**<br>**under Equity Incentive Plan**<br>**Awards<sup>(2)</sup>** | **All Other**<br>**Stock Awards:**<br>**Number of**<br>**Shares of** <br>**Stock or** <br>**Units<sup>(34)</sup>** | **Grant Date**<br>**Fair Value of**<br>**Stock and**<br>**Option**<br>**Awards**<br>**($)<sup>(5)</sup>**  |
| **Name** | **Grant Date** | **Committee** <br>**Action**<br>**Date** | **Threshold**<br>**($)** | **Target**<br>**($)** | **Maximum**<br>**($)** | **Threshold**<br>**(#)** | **Target**<br>**(#)** | **Maximum**<br>**(#)** | **All Other**<br>**Stock Awards:**<br>**Number of**<br>**Shares of** <br>**Stock or** <br>**Units<sup>(34)</sup>** | **Grant Date**<br>**Fair Value of**<br>**Stock and**<br>**Option**<br>**Awards**<br>**($)<sup>(5)</sup>**  |
| **David Slater** |  |  | &nbsp;&nbsp;&nbsp;&nbsp;301392 | 1205568 | 2411136 |  |  |  |  |  |
|  | &nbsp;&nbsp;1/28/2025 <sup>(4)</sup> | &nbsp;&nbsp;1/28/2025 |  |  |  |  |  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7071 | &nbsp;&nbsp;&nbsp;&nbsp;700029  |
|  | &nbsp;&nbsp;2/25/2025 | &nbsp;&nbsp;2/25/2025 |  |  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20329 | 40658 | &nbsp;&nbsp;&nbsp;&nbsp;81316 |  | &nbsp;&nbsp;&nbsp;&nbsp;3913028  |
|  | &nbsp;&nbsp;2/25/2025 <sup>(3)</sup> | &nbsp;&nbsp;2/25/2025 |  |  |  |  |  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17425 | &nbsp;&nbsp;&nbsp;&nbsp;1669315  |
| **Christopher Zona** |  |  | &nbsp;&nbsp;&nbsp;&nbsp;149875 | 599500 | 1199000 |  |  |  |  |  |
|  | &nbsp;&nbsp;2/25/2025 | &nbsp;&nbsp;2/25/2025 |  |  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6323 | 12645 | &nbsp;&nbsp;&nbsp;&nbsp;25290 |  | &nbsp;&nbsp;&nbsp;&nbsp;1216986  |
|  | &nbsp;&nbsp;2/25/2025 <sup>(3)</sup> | &nbsp;&nbsp;2/25/2025 |  |  |  |  |  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5419 | &nbsp;&nbsp;&nbsp;&nbsp;519140  |
| **Jeffrey Jewell** |  |  | &nbsp;&nbsp;&nbsp;&nbsp;130000 | 520000 | 1040000 |  |  |  |  |  |
|  | &nbsp;&nbsp;2/25/2025 | &nbsp;&nbsp;2/25/2025 |  |  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5963 | 11926 | &nbsp;&nbsp;&nbsp;&nbsp;23852 |  | &nbsp;&nbsp;&nbsp;&nbsp;1147788  |
|  | &nbsp;&nbsp;2/25/2025 <sup>(3)</sup> | &nbsp;&nbsp;2/25/2025 |  |  |  |  |  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5111 | &nbsp;&nbsp;&nbsp;&nbsp;489634  |
| **Wendy Ellis** |  |  | &nbsp;&nbsp;&nbsp;&nbsp;102000 | 408000 | 816000 |  |  |  |  |  |
|  | &nbsp;&nbsp;2/25/2025 | &nbsp;&nbsp;2/25/2025 |  |  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3990 | 7980 | &nbsp;&nbsp;&nbsp;&nbsp;15960 |  | &nbsp;&nbsp;&nbsp;&nbsp;768015  |
|  | &nbsp;&nbsp;2/25/2025 <sup>(3)</sup> | &nbsp;&nbsp;2/25/2025 |  |  |  |  |  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3420 | &nbsp;&nbsp;&nbsp;&nbsp;327636  |
| **Melissa Cox** |  |  | &nbsp;&nbsp;&nbsp;&nbsp;83438 | 333750 | 667500 |  |  |  |  |  |
|  | &nbsp;&nbsp;2/25/2025 | &nbsp;&nbsp;2/25/2025 |  |  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1726 | 3452 | &nbsp;&nbsp;&nbsp;&nbsp;6904 |  | &nbsp;&nbsp;&nbsp;&nbsp;332229  |
|  | &nbsp;&nbsp;2/25/2025 <sup>(3)</sup> | &nbsp;&nbsp;2/25/2025 |  |  |  |  |  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1480 | &nbsp;&nbsp;&nbsp;&nbsp;141784 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(1) These dollar amounts represent the threshold, target, and maximum calculated awards for the 2025 plan year under the Annual Incentive Plan. The various measures and details relating to the 2025 final awards are presented beginning on page [38](#tAI) .

&nbsp;&nbsp;&nbsp;&nbsp;(2) Represents the number of performance shares granted in 2025. The performance measurement period for the 2025 grants is January 1, 2025 through December 31, 2027. Payments earned from the 2025 grants will be based on the following performance measures: 75% total stockholder return versus long-term incentive plan peers and 25% leverage ratio. The final payouts, if any, will occur after the O&C Committee certifies the final results in early 2028.

&nbsp;&nbsp;&nbsp;&nbsp;(3) Represents the annual grant of restricted stock units in 2025. The restricted stock units will vest on February 25, 2028, assuming the Named Executive Officer is still employed by the Company on that date.

&nbsp;&nbsp;&nbsp;&nbsp;(4) Represents a special grant of restricted stock units. The restricted stock units will vest on March 1, 2028, assuming the Named Executive Officer is still employed by the Company on that date.

&nbsp;&nbsp;&nbsp;&nbsp;(5) The grant date fair value is computed in accordance with ASC Topic 718. The final payout of performance share awards is subject to market and performance conditions. The amounts included in this column are based on the probable outcome with respect to the satisfaction of the performance condition, which is assumed to be target performance, and the fair value of the market condition consistent with the recognition criteria in ASC Topic 718. The TSR component of the performance shares reported in this column was valued using a Monte Carlo simulation, and the leverage ratio component of the performance shares reported in this column was valued using the grant date stock price.

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| | | |
|:---|:---|:---|
| DT Midstream | **45** | 2026 Proxy Statement |

---

------

#### **TABLE OF CONTENTS**

#### Outstanding Equity Awards at Fiscal Year-End
The following table sets forth information with respect to outstanding equity awards held by each of our Named Executive Officers as of December 31, 2025. Treatment of any outstanding equity awards in the event of a change in control is described under "Potential Payments Upon Termination of Employment" beginning on page [54](#tPTC60).

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Name** | **Grant Date**  | **Stock Awards** | **Stock Awards** | **Stock Awards** | **Stock Awards** |
| **Name** | **Grant Date**  | **Number of** <br>**Shares or** <br>**Units of Stock** <br>**That Have Not**<br>**Vested (#)<sup>(1)</sup>** | **Market Value of**<br>**Shares or** <br>**Units of Stock** <br>**That Have Not**<br>**Vested ($)<sup>(2)</sup>** | **Number of** <br>**Unearned Shares,** <br>**Units or Other**<br>**Rights That** <br>**Have Not**<br>**Vested (#)<sup>(3)</sup>** | **Market Value of**<br>**Unearned Shares,** <br>**Units or Other** <br>**Rights That** <br>**Have Not**<br>**Vested ($)<sup>(2)</sup>**  |
| **David Slater** | 2/1/2023 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;162988 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19506404 |  |  |
|  | 2/15/2024 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35594 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4259890 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;166103 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19879207  |
|  | 1/28/2025 <sup>(5)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7241 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;866603 |  |  |
|  | 2/25/2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17844 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2135570 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;83272 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9965993  |
| **Christopher Zona** | 2/1/2023 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44293 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5300986 |  |  |
|  | 2/15/2024 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11070 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1324858 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;51658 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6182429  |
|  | 12/24/2024 <sup>(5)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3615 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;432643 |  |  |
|  | 2/25/2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5549 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;664104 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25898 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3099473  |
| **Jeffrey Jewell** | 5/4/2020 <sup>(4)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15891 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1901835 |  |  |
|  | 2/1/2023 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;42962 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5141692 |  |  |
|  | 2/15/2024 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10440 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1249459 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;48720 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5830810  |
|  | 12/24/2024 <sup>(5)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3615 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;432643 |  |  |
|  | 2/25/2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5234 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;626405 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24426 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2923304  |
| **Wendy Ellis** | 2/1/2023 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;26044 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3116946 |  |  |
|  | 2/15/2024 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6986 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;836084 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;32600 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3901568  |
|  | 12/24/2024 <sup>(5)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3615 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;432643 |  |  |
|  | 2/25/2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3502 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;419119 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16344 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1956050  |
| **Melissa Cox** | 2/1/2023 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13288 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1590349 |  |  |
|  | 2/15/2024 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3022 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;361688 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14102 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1687706  |
|  | 2/25/2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1516 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;181386 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7070 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;846142 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(1) Represents restricted stock units awarded in 2020, 2023, 2024, and 2025 and performance shares awarded in 2023, rounded to the nearest whole share.

The restricted stock units vest on the third anniversary of the applicable grant date, except for grants issued on May 4, 2020, December 24, 2024 and January 28, 2025, each described below. The performance shares were earned based on the performance period that began on January 1, 2023 and

ended on December 31, 2025. The number of shares issuable pursuant to the awards was determined in February 2026 and was subject to service-based vesting through the date of determination.

&nbsp;&nbsp;&nbsp;&nbsp;(2) Represents the fair market value of shares (including fractional shares) using the closing price on December 31, 2025 of $119.68.

&nbsp;&nbsp;&nbsp;&nbsp;(3) Represents performance shares awarded in 2024 and 2025. The performance period begins on January 1 of the year of grant and ends on December 31 of the second year following the year of grant. If performance goals are achieved, awards are paid in stock in the first quarter following the end of the performance period. The number of shares for the 2024 and 2025 performance share awards is calculated at maximum for the total stockholder return versus peers performance condition and at maximum for the leverage ratio performance condition.

&nbsp;&nbsp;&nbsp;&nbsp;(4) Represents a special grant of restricted stock units that will vest on May 4, 2026, assuming the Named Executive Officer is still employed by the Company on that Date.

&nbsp;&nbsp;&nbsp;&nbsp;(5) Represents a special grant of restricted stock units that will vest on March 1, 2028, assuming the Named Executive Officer is still employed by the Company on that date. A similar special grant was approved by the Board for Ms. Cox on January 28, 2026, which is not included in this table as it was issued in 2026.

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| | | |
|:---|:---|:---|
| DT Midstream | **46** | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**

#### Stock Awards Vested
The following table sets forth information regarding the value of Company stock awards that vested in 2025, for each of the Named Executive Officers.

---

| | | |
|:---|:---|:---|
|  | **Stock Awards**  | **Stock Awards**  |
| **Name** | **Number of Shares** <br>**Acquired on Vesting**<br>**(#)<sup>(1)</sup>** | **Value Realized** <br>**on Vesting** <br>**($)**  |
| **David Slater** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;177613 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17647366  |
| **Christopher Zona** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;55394 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5551964  |
| **Jeffrey Jewell** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;62609 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6313940  |
| **Wendy Ellis** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;36541 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3663735  |
| **Melissa Cox** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11595 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1145049 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(1) Represents restricted stock units and performance shares that vested and were paid in 2025. The performance shares paid in 2025 were earned for the performance period ending on December 31, 2024 and were determined and paid during 2025.

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|:---|:---|:---|
| DT Midstream | **47** | 2026 Proxy Statement |

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------

#### **TABLE OF CONTENTS**

#### Pay Versus Performance
Below is information about the relationship between executive compensation actually paid ("CAP") to our Named Executive Officers and our financial performance, as prepared in accordance with SEC rules. CAP is an amount calculated using methodology prescribed by SEC rules and differs from the compensation actually received by our Named Executive Officers and the compensation decisions described in the CD&A section above. For purposes of the Peer Group Total Stockholder Return column of the Pay Versus Performance Table, we have used the Standard & Poor's 500 Index and Alerian Midstream Energy Index, which we also use for purposes of the Stock Performance Graph in our annual report on Form 10K.

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  |  |  |  |  | **Value of Initial Fixed $100**<br>**Investment Based On:** | **Value of Initial Fixed $100**<br>**Investment Based On:** |  |  |
| **Year** | **Summary**<br>**Compensation**<br>**Table Total**<br>**for PEO** | **Compensation**<br>**Actually Paid to** <br>**PEO<sup>(1)</sup>** | **Average**<br>**Summary**<br>**Compensation**<br>**Table Total**<br>**for Non-PEO**<br>**NEOs<sup>(2)</sup>** | **Average**<br>**Compensation**<br>**Actually Paid**<br>**to Non-PEO**<br>**NEOs<sup>\*(2)(3)</sup>** | **Total**<br>**Stockholder**<br>**Return** | **Peer Group**<br>**Total**<br>**Stockholder**<br>**Return<sup>(4)</sup>** | **Net**<br>**Income**<br>**(in millions)** | **Adjusted**<br>**EBITDA**<br>**(in millions)<sup>(5)</sup>**  |
| 2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9328071 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$25155353 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2568187 | &nbsp;&nbsp;&nbsp;&nbsp;$6097854 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;347.74 | 169.17<br>206.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$441 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1138  |
| 2024 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9045802 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$41721736 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2877021 | &nbsp;&nbsp;&nbsp;&nbsp;$10101501 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;280.16 | 143.52<br>196.66 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$354 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$969  |
| 2023 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7971250 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6638368 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2168051 | &nbsp;&nbsp;&nbsp;&nbsp;$1838105 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;148.29 | 114.82<br>136.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$384 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$924  |
| 2022 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6824382 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$8597154 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1797738 | &nbsp;&nbsp;&nbsp;&nbsp;$2215617 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;141.56 | 90.94<br>118.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$370 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$830  |
| 2021 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6493954 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$8553120 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$3073059 | &nbsp;&nbsp;&nbsp;&nbsp;$3842225 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;117.18 | 111.07<br>97.63 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$307 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$768 |

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\* Net of forfeitures

&nbsp;&nbsp;&nbsp;&nbsp;(1) The following table sets forth the adjustments (*i.e.*, amounts deducted and added) made to the PEO's Summary Compensation Table Total to determine the CAP to the Principal Executive Officer ("PEO") for 2025. The valuation methodology (including assumptions) used to determine the fair value of restricted stock unit awards for purposes of determining the CAP to the PEO is the same as set forth in footnote 2 to the Summary Compensation Table. For performance share awards, the grant date fair value of awards used for Summary Compensation Table calculations assumes target performance. To determine the year-end fair values used in the CAP calculations, we have updated the performance expectations to reflect the latest performance estimates for unvested and outstanding awards at each fiscal year end date. We have also recalculated the fair value of the Total Stockholder Return component of the performance share awards at each fiscal year end date.

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Summary**<br>**Compensation**<br>**Table (SCT)** <br>**Total for PEO** | **Less Reported**<br>**SCT Stock** <br>**Award Value** | **Plus 12/31/25** <br>**Fair Value** <br>(FV) of<br>**Awards** <br>**Granted in** <br>**Fiscal Year** | **Plus Change in** <br>**FV of Awards**<br>**Granted Prior** <br>**to 2025,** <br>**Unvested as of** <br>**12/31/25** | **Plus Change** <br>**in FV of** <br>**Awards**<br>**Granted Prior** <br>**to 2025 that** <br>**Vested in** <br>**Fiscal Year** | **Compensation**<br>**Actually Paid** <br>**to PEO**  |
| $9328071 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;($6282371) | &nbsp;&nbsp;&nbsp;$10606611 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$11313546 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$189497 | &nbsp;&nbsp;&nbsp;&nbsp;$25155353 |

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| DT Midstream | **48** | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**
&nbsp;&nbsp;&nbsp;&nbsp;(2) For each year indicated, our non-PEO NEOs were:

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| | |
|:---|:---|
| 2025 | Christopher Zona<br>Jeffrey Jewell<br>Wendy Ellis<br>Melissa Cox  |
| 2024 | Jeffrey Jewell<br>Christopher Zona<br>Wendy Ellis<br>Melissa Cox  |
| 2023 | Jeffrey Jewell<br>Christopher Zona<br>Wendy Ellis<br>Melissa Cox  |
| 2022 | Jeffrey Jewell<br>Christopher Zona<br>Wendy Ellis<br>Melissa Cox<br>Richard Redmond, Jr.  |
| 2021 | Jeffrey Jewell<br>Christopher Zona<br>Richard Redmond, Jr.<br>Wendy Ellis |

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&nbsp;&nbsp;&nbsp;&nbsp;(3) The following table sets forth the calculation of the average CAP to non-PEO Named Executive Officers and the adjustments (*i.e.*, amounts deducted and added) made to the Summary Compensation Table Total of the relevant NEOs to determine the average CAP to the relevant Named Executive Officers for 2025. The valuation methodology (including assumptions) used to determine the fair value of equity awards for purposes of determining the average CAP to the Named Executive Officers is the same as set forth in footnote 2 to the Summary Compensation Table. For performance share awards, the grant date fair value of awards used for Summary Compensation Table calculations assumes target performance. To determine the year-end fair values used in the CAP calculations, we have updated the performance expectations to reflect the latest performance estimates for unvested and outstanding awards at each fiscal year end date. We have also recalculated the fair value of the Total Stockholder Return component of the performance share awards at each fiscal year end date.

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Summary**<br>**Compensation**<br>**Table (SCT)** <br>**Total for Non-**<br>**PEO NEOs** | **Less Reported**<br>**SCT Stock** <br>**Award Value** | **Plus 12/31/25** <br>**Fair Value** <br>(FV) of<br>**Awards** <br>**Granted in** <br>**Fiscal Year** | **Plus Change in** <br>**FV of Awards**<br>**Granted Prior** <br>**to 2025,**<br>**Unvested as of** <br>**12/31/25** | **Plus Change in** <br>**FV of Awards**<br>**Granted Prior** <br>**to 2025 that** <br>**Vested in**<br>**Fiscal Year\*** | **Compensation**<br>**Actually Paid** <br>**to Non-PEO** <br>**NEOs**  |
| $2568187 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;($1235803) | &nbsp;&nbsp;&nbsp;&nbsp;$2156214 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2515467 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$93790 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6097854 |

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&nbsp;&nbsp;&nbsp;&nbsp;(4) For purposes of our Peer Group Total Stockholder Return column of the Pay Versus Performance Table, we have used the Standard & Poor's 500 Index (first number) and Alerian Midstream Energy Index ("AMNA Index") (second number), which we also use for purposes of the Stock Performance Graph in our annual report on Form 10-K. We believe the AMNA Index is meaningful because it is an independent, objective view of the performance of similarly sized midstream energy companies.

&nbsp;&nbsp;&nbsp;&nbsp;(5) For 2025, 2024 and 2023, adjusted EBITDA reflected Company operating earnings before expenses for interest, taxes, depreciation and amortization, gains or losses from financing activities and includes the proportional share of net income (excluding interest, taxes, depreciation and amortization) from our equity method investees and excludes the proportional share of depreciation and amortization attributable to minority interests in our consolidated subsidiaries.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

For 2022, adjusted EBITDA reflected Company operating earnings before expenses for interest, taxes, depreciation and amortization, gains or losses from financing activities and includes the proportional share of net income (excluding taxes, depreciation and amortization from our equity method investees) and excludes the proportional share of depreciation and amortization attributable to minority interests in our consolidated subsidiaries. If adjusted EBITDA for 2022 was calculated in the same manner as 2025, 2024, and 2023, the result would have been $841 million.

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| DT Midstream | **49** | 2026 Proxy Statement |

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#### Tabular List
The following tabular list sets forth those measures, which, in our assessment, represent the three financial performance measures and the three non-financial performance measures that we use to link the compensation paid to our Named Executive Officers for fiscal year 2025 to Company performance.

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| |
|:---|
| **Financial Performance Measures**  |
| Adjusted EBITDA  |
| Leverage Ratio  |
| Relative TSR  |
| **Non-Financial Performance Measures**  |
| Business Development  |
| Operating Performance  |
| OSHA Recordable Incident Rate |

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|:---|:---|:---|
| DT Midstream | **50** | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**

#### Descriptions of Pay Versus Performance Relationships
The following graphs show the relationship between the CAP to our PEO and the average of the CAP to our other Named Executive Officers (other than our PEO) to our total stockholder return, the total stockholder return of our peer groups, net income and adjusted EBITDA, each over the five fiscal years ending December 31, 2021, 2022, 2023, 2024 and 2025, as reported in the table above.

![](ny20058512x1_pvpchart01.jpg)

For purposes of our Peer Group Total Stockholder Return, we have used both the Standard & Poor's 500 Index and AMNA Index. We use both indices for purposes of the Stock Performance Graph in our annual report on Form 10-K. We believe the AMNA Index is meaningful because it is an independent, objective view of the performance of similarly sized midstream energy companies. The Total Stockholder Return values are measured from July 1, 2021, the date that DT Midstream became an independent, publicly traded company.

![](ny20058512x1_pvpchart02.jpg)

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| DT Midstream | **51** | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**

#### Timing of Equity Grants
The Company does not currently utilize stock options as part of its compensation program. Other than in exceptional cases, such as promotions, new hires, and corporate transactions, long-term incentive awards are granted in the first quarter of the fiscal year when the O&C Committee determines salary levels and bonus programs for the new fiscal year. The O&C Committee does not grant equity awards in anticipation of the release of material non-public information, nor does the Committee consider the timing of disclosures of material non-public information based on equity award grant dates.

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| DT Midstream | **52** | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**

#### POST-EMPLOYMENT BENEFITS

#### Tax-Qualified Deferred Compensation
*DTM 401(k) Plan* 

DT Midstream employees are eligible to participate in the DTM 401(k) Plan, subject to satisfaction of the plan's eligibility requirements. A participant may contribute up to 100% (less applicable FICA taxes and other legally required or voluntary deductions, and subject to annual limits under the Internal Revenue Code) of eligible compensation to the DTM 401(k) Plan as pre-tax, Roth, or after-tax contributions. We contribute $1 to the participant's DTM 401(k) Plan account for each $1 the participant contributes on the first 4% of eligible compensation. We contribute $0.50 for each $1 contributed on the next 4% of eligible compensation. We also contribute 4% of eligible compensation to ensure every employee is saving for retirement, and an annual contribution of $4,000 (contributed in biweekly increments) in lieu of providing a retiree health care plan. Participants are always 100% vested in their contributions to the DTM 401(k) Plan; participants vest in our contributions to the DTM 401(k) Plan over two years of service.

Our contributions to the DTM 401(k) Plan are made in cash; participants may direct the investment of their contributions and our contributions to any investment option available under the DTM 401(k) Plan.

#### Nonqualified Deferred Compensation
The following table sets forth the aggregate earnings and account balance information under the DTM Supplemental Savings Plan for 2025.

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Name** | **Plan** | **Executive** <br>**Contributions** <br>**in Last FY** <br>**($)** | **Registrant** <br>**Contributions** <br>**in Last FY** <br>**($)** | **Aggregate** <br>**Earnings** <br>**in Last FY** <br>**($)** | **Aggregate** <br>**Balance at** <br>**Last FYE** <br>**($)**  |
| **David Slater** | DTM Supplemental Savings Plan | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;33426 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;306568 | &nbsp;&nbsp;&nbsp;&nbsp;210617 | &nbsp;&nbsp;1628305  |
| **Christopher Zona** | DTM Supplemental Savings Plan | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22692 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;118136 | &nbsp;&nbsp;&nbsp;&nbsp;122569 | &nbsp;&nbsp;856318  |
| **Jeffrey Jewell** | DTM Supplemental Savings Plan | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10169 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;142488 | &nbsp;&nbsp;&nbsp;&nbsp;129655 | &nbsp;&nbsp;894684  |
| **Wendy Ellis** | DTM Supplemental Savings Plan | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;58962 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;116010 | &nbsp;&nbsp;&nbsp;&nbsp;93727 | &nbsp;&nbsp;827647  |
| **Melissa Cox** | DTM Supplemental Savings Plan | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;56115 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19854 | &nbsp;&nbsp;&nbsp;&nbsp;19823 | &nbsp;&nbsp;181676 |

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*DTM Supplemental Savings Plan* 

Our Named Executive Officers are eligible to participate in the DTM Supplemental Savings Plan. The benefits provided under the DTM Supplemental Savings Plan include the benefits that would have otherwise been provided under the DTM 401(k) Plan, including any Company contributions, but for the limitations imposed on qualified plans by the Internal Revenue Code. The percentage of compensation a participant may contribute to the DTM Supplemental Savings Plan is the same as the pre-tax percentage of compensation the participant elects to contribute to the DTM 401(k) Plan. Company contributions mirror those under the DTM 401(k) Plan, including the vesting schedule; DT Midstream may also make additional Company contributions to participants' accounts. The investment options into which a participant can elect to have the participant's account treated as invested are the same as under the DTM 401(k) Plan.

DT Midstream maintains bookkeeping accounts for participants in the DTM Supplemental Savings Plan. A participant's benefit will be the participant's bookkeeping account recording the participant's interest in each of the investment options in which the participant's contributions and Company contributions are treated as invested. No actual cash contributions are made to the investment options. Earnings and losses are calculated using the daily valuation methodology used by the recordkeeper for each corresponding investment option in the DTM 401(k) Plan.

All accounts under the DTM Supplemental Savings Plan are subject to Internal Revenue Code Section 409A. When a participant terminates employment with DT Midstream, the participant will receive the vested value of the participant's DTM Supplemental Savings Plan account, including all of the participant's own contributions and the vested portion of Company contributions, adjusted for earnings and losses. In the event of death, a lump sum distribution will be paid to the participant's spouse or designated beneficiary.

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| DT Midstream | **53** | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**
Distributions from the DTM Supplemental Savings Plan will be paid in cash and made in accordance with the distribution election when the participant first became eligible to participate (or any later permissible change to the participant's distribution election). A participant may elect to take a lump sum distribution or annual payments over a period of not less than two and not more than 15 years. Lump sum payments and initial annual installment payments from the participant's account are made not later than March 1 of the calendar year following the calendar year in which the participant terminates employment. Certain executives, including NEOs, must wait a minimum of six months after their termination date before a distribution can be made. Subsequent annual installments are made on March 1 of each following year in the distribution period.

#### Potential Payments Upon Termination of Employment
All our NEOs are employees at-will and do not have employment agreements with us. We have entered into Severance Agreements and Change-In-Control Severance Agreements with certain executives, including the Named Executive Officers. The Change-In-Control Severance Agreements are intended to provide continuity of management in the event there is a change in control of the Company and to align executive and stockholder interests in support of corporate transactions.

A "qualifying termination" occurs if an executive's employment is terminated by the Company other than as a result of the executive's death or permanent disability or by the Company for Cause or if an executive's employment is terminated by the executive for Good Reason (as each such term is defined in the applicable agreement), provided that with respect to the Change-In-Control Severance Agreements and the DT Midstream LTIP, an executive's termination for Good Reason must occur during the severance period.

A "change in control" occurs if (1) we or our assets are acquired by another company or if we merge, consolidate or reorganize with or into another company and as a result of such transaction, less than 50% of the new or acquiring company's combined voting stock is held by holders of the voting stock of the Company immediately prior to the change in control transaction, (2) a "person" becomes the beneficial owner of at least 30% of the Company's voting stock, (3) a majority of the Company's Board members change within a period of twelve consecutive months or (4) the Company's stockholders approve a complete liquidation or dissolution of the Company.

*Severance Agreements* 

The Severance Agreements provide for severance compensation in the event that an executive experiences a qualifying termination. The severance compensation paid to an executive following a qualifying termination is equal to 100% (in the case of Mses. Ellis and Cox and Messrs. Zona and Jewell) or 200% (in the case of Mr. Slater) of (1) the executive's base salary at the time of termination and (2) the executive's target annual bonus under the Company's annual incentive plan. All payments under the Severance Agreements are subject to the executive's execution and non-revocation of a release of claims in favor of the Company.

*Change-In-Control Severance Agreements* 

The Change-In-Control Severance Agreements provide for severance compensation in the event that an executive experiences a qualifying termination within two years after a change in control of the Company. The severance compensation paid to an executive following a qualifying termination is the same for all of the change-in-control events. The cash severance benefit is equal to a multiple of the executive's base salary plus the greater of the executive's annual bonus for the year in which the change in control occurs or the year in which the qualifying termination occurs, assuming target performance goals for such year would be met and that the executive's individual performance multiplier is 100%. The multiple for all Named Executive Officers is 200%. The executive will also receive a lump sum payment equal to the greater of the executive's target or actual annual bonus (reduced by any annual bonus otherwise paid because of the executive's termination) for the year in which the change in control occurs or the year in which the qualifying termination occurs, assuming the executive's individual performance multiplier is 100%, pro-rated for days worked during the calendar year in which the qualifying termination occurs.

An additional amount is paid as consideration for the prohibition against engaging in any competitive activity for the one-year period following a qualifying termination imposed by the Change-In-Control Severance Agreement. The additional amount for the Named Executive Officers is 100% of the executive's base salary plus the greater of the executive's actual or target annual bonus for the year in which the change in control occurs or the year in which the qualifying termination occurs, assuming target performance goals for such year would be met and the executive's individual performance multiplier is 100%.

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| DT Midstream | **54** | 2026 Proxy Statement |

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#### **TABLE OF CONTENTS**
An executive is further entitled to receive a lump sum payment equal to cost of coverage under the Company's welfare benefit plans for the two-year period following the executive's qualifying termination and payment by the Company for outplacement services by a firm selected by the executive in an amount up to 15% of the executive's base salary. No payment for outplacement services will be made by the Company after the end of the calendar year following the calendar year in which an executive experiences a qualifying termination.

The Change-In-Control Severance Agreements do not provide any gross-up payments for the purposes of payment of excise taxes.

*Annual Incentives* 

The Annual Incentive Plan provides that upon the occurrence of a change in control event described above, executives will receive payment for the plan year during which the change in control occurs without proration for the effective date of the change in control event or an executive's qualifying termination of employment following a change in control event based on the greater of the executive's target performance level for each performance measure or the executive's actual performance level for each performance measure using performance through the date of the change in control for purposes of determining actual levels of performance. If an executive experiences a qualifying termination of employment following a change in control event but before payment of any amounts under the annual incentive plan, the executive will remain entitled to receive payment under the annual incentive plan in accordance with its terms. Change in control payments under the Annual Incentive Plan may not be reduced, modified or canceled.

*Long-Term Incentives* 

The DT Midstream LTIP provides that all options, restricted stock awards, restricted stock units, performance shares and performance unit awards will become exercisable or vested or will be earned (as applicable) upon the occurrence of a change in control event described above or if the new or acquiring entity fails to replace or continue the awards. Performance shares will be based on the greater of target performance or actual performance through the change in control date. If a change in control event described above occurs and the new or acquiring entity replaces or continues the awards, all options, restricted stock awards, restricted stock units, performance shares and performance share awards will become exercisable or vested or will be earned (as applicable) as of the earlier of the date specified in the award agreement or the executive's qualifying termination, which generally must occur within two years after the change in control date.

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| DT Midstream | **55** | 2026 Proxy Statement |

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The following table provides the estimated lump-sum or present values of the various change in control protections and severance payments as if a qualifying termination had occurred on December 31, 2025.

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| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Name** | **Cash** <br>**Compensation** <br>**($)** | **Bonus** <br>**($)<sup>(3)</sup>** | **Accelerated** <br>**LTIP** <br>**Awards** <br>**($)<sup>(4)</sup>** | **Out-** <br>**Placement** <br>**($)<sup>(5)</sup>** | **Non-Compete** <br>**($)<sup>(6)</sup>** | **Total** <br>**($)**  |
| **David Slater**<br>|  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;*Qualifying Termination<sup>(1)</sup>* | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4133376 |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;*Change in Control* |  | 1839938 |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;*Qualifying Termination following a Change in Control<sup>(2)</sup>* | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5402116 | 1839938 | &nbsp;&nbsp;56038584 | &nbsp;&nbsp;&nbsp;&nbsp;129168 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2701058 | 66110864  |
| **Christopher Zona** |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;*Qualifying Termination<sup>(1)</sup>* | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1144500 |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;*Change in Control* |  | 914957 |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;*Qualifying Termination following a Change in Control<sup>(2)</sup>* | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2919914 | 914957 | &nbsp;&nbsp;16825645 | &nbsp;&nbsp;&nbsp;&nbsp;81750 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1459957 | 22202222  |
| **Jeffrey Jewell**<br>|  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;*Qualifying Termination<sup>(1)</sup>* | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1040000 |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;*Change in Control* |  | 793624 |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*Qualifying Termination*<br>*following a Change in*<br>*Control<sup>(2)</sup>* | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2627248 | 793624 | &nbsp;&nbsp;17937363 | &nbsp;&nbsp;&nbsp;&nbsp;78000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1313624 | 22749859  |
| **Wendy Ellis**<br>|  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;*Qualifying Termination<sup>(1)</sup>* | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;888000 |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;*Change in Control* |  | 622690 |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;*Qualifying Termination following a Change in Control<sup>(2)</sup>* | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2205379 | 622690 | &nbsp;&nbsp;10549524 | &nbsp;&nbsp;&nbsp;&nbsp;72000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1102690 | 14552282  |
| **Melissa Cox**<br>|  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;*Qualifying Termination<sup>(1)</sup>* | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;778750 |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;*Change in Control* |  | 509369 |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*Qualifying Termination* <br>*following a Change in* <br>*Control<sup>(2)</sup>* | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1908739 | 509369 | &nbsp;&nbsp;4618448 | &nbsp;&nbsp;&nbsp;&nbsp;66750 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;954369 | 8057675 |

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&nbsp;&nbsp;&nbsp;&nbsp;(1) Represents 100% (in the case of Mses. Ellis and Cox and Messrs. Zona and Jewell) and 200% (in the case of Mr. Slater) of the sum of the NEO's base salary and target annual bonus under the Company's annual incentive plan for the year in which the qualifying termination occurs.

&nbsp;&nbsp;&nbsp;&nbsp;(2) Represents 200% of the sum of the NEO's base salary and the greater of the NEO's annual bonus under the Company's annual incentive plan for the year in which the change in control occurs or the year in which the qualifying termination occurs.

&nbsp;&nbsp;&nbsp;&nbsp;(3) Represents the greater of the NEO's target or actual annual bonus under the Company's annual incentive plan for the year in which the change in control occurs.

&nbsp;&nbsp;&nbsp;&nbsp;(4) Represents the full value of performance shares and restricted share units granted under the DT Midstream LTIP, as of December 31, 2025, that would become payable in the event of a qualifying change in control.

&nbsp;&nbsp;&nbsp;&nbsp;(5) Outplacement benefits are capped at 15% of each NEO's base salary.

&nbsp;&nbsp;&nbsp;&nbsp;(6) Represents 100% of the sum of the NEO's base salary and the greater of the NEO's actual or target annual bonus under the Company's annual incentive plan for the year in which the change in control occurs or the year in which the qualifying termination occurs.

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#### Chief Executive Officer Pay Ratio
For the fiscal year ended December 31, 2025, we identified the median of all our employees, excluding our Chief Executive Officer, by using the median of Gross Pay from 2025 W-2 Box 1 Federal Taxable Wages as our consistently applied compensation measure. We reviewed gross pay for all employees who received a W-2 in 2025, whether employed on a full-time, part-time, or seasonal basis. We did not annualize the compensation for any full-time employees who were not employed by us for all of 2025.

Based on the information summarized in the table below, the ratio of the annual total compensation of our President and Chief Executive Officer to the median employee is 82 to 1. This ratio is a reasonable estimate calculated in a manner consistent with Item 402(u) of Regulation S-K.

Because the SEC rules for identifying the median of the annual total compensation of our employees and calculating the pay ratio based on that employee's annual total compensation allow companies to adopt a variety of methodologies, to apply certain exclusions and to make reasonable estimates and assumptions that reflect their employee populations and compensation practices, the pay ratio reported by other companies may not be comparable to the pay ratio for our Company.

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| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Name and Principal** <br>**Position** | **Year** | **Salary** <br>**($)<sup>(1)(2)</sup>** | **Stock** <br>**Awards** <br>**($)<sup>(1)</sup>** | **Non-Equity** <br>**Incentive Plan** <br>**Compensation** <br>**($)<sup>(1)</sup>** | **All Other** <br>**Compensation** <br>**($)<sup>(1)</sup>** | **Total** <br>**($)<sup>(1)</sup>**  |
| David Slater <br>*Executive Chairman* <br>*and Chief Executive Officer* | 2025 | 852203 | 6282371 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1839938 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;353559 | 9328071  |
| Median Employee<sup>(3)</sup> | 2025 | 86823 | 6641 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8710 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11514 | 113688 |

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&nbsp;&nbsp;&nbsp;&nbsp;(1) Explanations for categories can be found in the Summary Compensation Table on page [43](#tSCT55) .

&nbsp;&nbsp;&nbsp;&nbsp;(2) Salary for the median employee includes regular, overtime, holiday pay and paid time off.

&nbsp;&nbsp;&nbsp;&nbsp;(3) The median employee is a lead field pipeline technician who works in our operations organization.

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#### **TABLE OF CONTENTS**

## Security Ownership of

## Certain Beneficial Owners

## and Management
The following table sets forth information known to the Company regarding the beneficial ownership of our common stock as of March 11, 2026, by:

&nbsp;&nbsp;&nbsp;&nbsp;• each Named Executive Officer and director of the Company; and

&nbsp;&nbsp;&nbsp;&nbsp;• all current executive officers and directors of the Company, as a group.

Beneficial ownership is determined according to the rules of the SEC, which generally provide that a person has beneficial ownership of a security if he, she or it possesses sole or shared voting or investment power over that security, including options and warrants that are currently exercisable or exercisable within 60 days. Restricted stock units for which settlement has been deferred in accordance with our director compensation policy are not considered beneficially owned and are not included in the shares of common stock reported as beneficially owned by our directors in the table below.

The beneficial ownership of our common stock set forth in the table below are based on 102,014,118 shares of common stock issued and outstanding as of March 11, 2026.

Unless otherwise noted in the footnotes to the following table, and subject to applicable community property laws, the persons and entities named in the table have sole voting and investment power with respect to their beneficially owned common stock.

---

| | | |
|:---|:---|:---|
| **Name of Beneficial Owners** | **Common Stock** | **Other Shares That** <br>**May Be Acquired** <br>**Within 60 Days** |
| Angela Archon | 4895 | 1170<br> \*  |
| Stephen Baker | 2808 | \*  |
| Elaine Pickle | 4308 | \*  |
| Robert Skaggs, Jr. | 38653 | \*  |
| Peter Tumminello | 11386 | \*  |
| Dwayne Wilson | 2808 | \*  |
| David Slater | 262971 | \*  |
| Christopher Zona | 96129 | \*  |
| Jeffrey Jewell | 89582 | \*  |
| Wendy Ellis | 26772 | \*  |
| Melissa Cox | 12132 | \*  |
| Directors and Executive Officers as a group — 11 | 552444 | \* |

---

\* Less than 1%. 

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#### **TABLE OF CONTENTS**

#### Security Ownership of Certain Beneficial Owners
The following table sets forth information regarding the only persons or groups known to the Company to be beneficial owners of more than 5% of our outstanding common stock.

---

| | |
|:---|:---|
| **Title of Class**  | **Name and Address of Beneficial Owner** |
| Common Stock  | The Vanguard Group, Inc. <br>100 Vanguard Blvd. <br>Malvern, Pennsylvania 19355<br>10108100<sup>(1)</sup><br>10.6%<sup>(1)</sup>  |
| Common Stock | BlackRock, Inc. <br>50 Hudson Yards <br>New York, New York 10001<br>10282157<sup>(2)</sup><br>10.1%<sup>(2)</sup> |

---

&nbsp;&nbsp;&nbsp;&nbsp;(1) Based on information contained in Schedule 13G/A filed on February 13, 2024. The Vanguard Group, Inc. has shared voting power with respect to 49,034 shares, sole dispositive power with respect to 10,108,100 shares, shared dispositive power with respect to 140,463 shares and is deemed to beneficially own 10,248,563 shares.

&nbsp;&nbsp;&nbsp;&nbsp;(2) Based on information contained in Schedule 13G/A filed on October 3, 2025. BlackRock Inc. has sole dispositive power with respect to 10,282,157 shares, sole voting power with respect to 9,466,126 shares, and is deemed to beneficially own 10,282,157 shares.

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#### **TABLE OF CONTENTS**

## Certain Relationships and

## Related Party Transactions
Related party transactions have the potential to create actual or perceived conflicts of interest. The Company has policies in place to address related party transactions. In addition, our Corporate Governance Committee reviews potential dealings or transactions with related parties.

During the year ended December 31, 2025, there were no related party transactions. For more information, please see the section titled "Procedures for Approval of Related Party Transactions".

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#### **TABLE OF CONTENTS**

## Stockholder Proposals for the 2027 Annual Meeting of Stockholders
Stockholders who, in accordance with Rule 14a-8 of the Exchange Act, wish to present proposals at our 2027 Annual Meeting of Stockholders (the "2027 Annual Meeting") and wish to have those proposals included in the proxy materials to be distributed by us in connection with our 2027 Annual Meeting must submit their proposals to the Company at Corporate Secretary, 500 Woodward Ave, Suite 2900, Detroit, Michigan 48226-1279 on or before November 26, 2026. Any such proposal must meet the requirements set forth in the rules and regulations of the SEC, including Rule 14a-8, in order for such proposal to be eligible for inclusion in our 2027 proxy statement.

In accordance with our Bylaws, in order to be properly brought before the 2027 Annual Meeting, regardless of inclusion in our proxy statement, notice of a matter a stockholder wishes to present, including any director nominations, must be delivered to the Company at Corporate Secretary, 500 Woodward Ave, Suite 2900, Detroit, Michigan 48226-1279, not less than 90 nor more than 120 days prior to the first anniversary date of this year's annual meeting, which would be no earlier than January 5, 2027 and no later than February 4, 2027. If, however, the date of the meeting is advanced by more than 30 days, or delayed by more than 60 days, from the anniversary date of this year's annual meeting, notice by the stockholder to be timely must be delivered not earlier than 90 days prior to the 2027 Annual Meeting and not later than the close of business on the later of the 90<sup>th</sup> day prior to such annual meeting or 10<sup>th</sup> day following the day on which public announcement of the date of such meeting is first made by us. The stockholder must also provide all of the information required by our Bylaws.

## Householding
The SEC allows companies and intermediaries (such as brokers) to implement a delivery procedure called "householding." Householding is the term used to describe the practice of delivering a single set of notices, proxy statements and annual reports to any household at which two or more stockholders reside. This procedure reduces the volume of duplicate information stockholders receive and also reduces a company's printing and mailing costs. Householding will continue until you are notified otherwise or you submit contrary instructions.

The Company will promptly deliver an additional copy of any such document to any stockholder, to the extent you request any such document. Alternatively, if you share an address with another stockholder and have received multiple copies of our notice, proxy statement and annual report, you may contact us to request delivery of a single copy of these materials. Any such written request should be directed to the Company at Corporate Secretary, 500 Woodward Ave, Suite 2900, Detroit, Michigan 48226-1279.

## Annual Report on Form 10-K
A copy of our annual report on Form 10-K for the year ended December 31, 2025, as filed with the SEC, will be provided to stockholders without charge upon written request directed to Investor Relations, 500 Woodward Ave, Suite 2900, Detroit, Michigan 48226-1279 or by email at investor_relations@dtmidstream.com. The Company makes available on or through our website free of charge our annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and all amendments to such reports filed pursuant to Section 13(a) or 15(d) of the Exchange Act as soon as reasonably practicable after filing.

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#### **TABLE OF CONTENTS**

## Other Matters
We do not presently know of any matters to be acted upon at the Annual Meeting other than the matters referred to in this proxy statement. If any other matter is properly presented, proxy holders will vote on the matter in their discretion.

By Order of the Board of Directors

![](sig_wellis.jpg)

Wendy Ellis

*Executive Vice President, General Counsel and Corporate Secretary*

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

Detroit, Michigan

March 26, 2026

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#### **TABLE OF CONTENTS**
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