# EDGAR Filing Document

**Accession Number:** 0001842022
**File Stem:** 0001140361-23-013308
**Filing Date:** 2023-3
**Character Count:** 2101
**Document Hash:** 8aad6268e6e7a2a3c61c110f9374cdc6
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001140361-23-013308.hdr.sgml**: 20230323

**ACCESSION NUMBER**: 0001140361-23-013308

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20230323

**DATE AS OF CHANGE**: 20230323

**FILER**: 

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

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-40392
- **FILM NUMBER:** 23755299

**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

### UNITED STATES<br>

### SECURITIES AND EXCHANGE COMMISSION<br>

### Washington, D.C. 20549

### SCHEDULE 14A

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

#### Exchange Act of 1934 (Amendment No.)
☒<br> Filed by the Registrant <br>

☐<br> 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)*

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| | |
|:---|:---|
| 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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