DT Midstream (NYSE: DTM) EVP Melissa Cox details stock and RSU moves

Rhea-AI Filing Summary

DT Midstream executive Melissa Cox reported routine equity transactions. On February 1, 2026, she acquired 2,361.83 shares of common stock in a transaction coded “M,” increasing her direct holdings to 7,532.83 shares, which include shares acquired through the company’s dividend reinvestment plan.

That same day, she disposed of 1,179 common shares at $126.02 per share in a transaction coded “F,” leaving 6,353.83 common shares directly owned. In addition, 2,094 restricted stock units converted, each representing a contingent right to one common share, and this restricted stock unit award fully vested on February 1, 2026, leaving no units remaining.

Insider Trade Summary

2,094 shares exercised/converted

Mixed 3 txns

Insider Cox Melissa

Role E.V.P., Chief Admin. Off.

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	2,094	$0.00	--
Exercise	Common Stock	2,361.83	$0.00	--
Tax Withholding	Common Stock	1,179	$126.02	$149K

Holdings After Transaction: Restricted Stock Units — 0 shares (Direct); Common Stock — 7,532.83 shares (Direct)

Footnotes (1)

1. Includes shares of the Issuer's common stock acquired under the Issuer's dividend reinvestment plan. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock with any fractional shares being paid in cash. This restricted stock unit vested on February 1, 2026.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Cox Melissa

(Last) (First) (Middle)

500 WOODWARD AVE., SUITE 2900

(Street)

DETROIT MI 48226

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
DT Midstream, Inc. [ DTM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	E.V.P., Chief Admin. Off.

3. Date of Earliest Transaction (Month/Day/Year)
02/01/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/01/2026		M		2,361.83(1)	A	(2)	7,532.83(1)	D
Common Stock	02/01/2026		F		1,179	D	$126.02	6,353.83	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(1)	02/01/2026		M			2,094	(3)	(3)	Common stock	2,094	$0	0	D

Explanation of Responses:

1. Includes shares of the Issuer's common stock acquired under the Issuer's dividend reinvestment plan.

2. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock with any fractional shares being paid in cash.

3. This restricted stock unit vested on February 1, 2026.

	/s/ Andrew Hayner, Attorney-in-Fact	02/03/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transactions did DT Midstream (DTM) EVP Melissa Cox report?

Melissa Cox reported acquiring 2,361.83 DT Midstream common shares and disposing of 1,179 shares on February 1, 2026. She also settled 2,094 restricted stock units that vested the same day, converting them into common stock and eliminating that RSU balance.

How many DT Midstream (DTM) shares does Melissa Cox own after this Form 4?

After the reported transactions, Melissa Cox directly owns 6,353.83 DT Midstream common shares. This reflects stock acquired through an “M” transaction and shares disposed of in an “F” transaction, as well as prior accumulation including dividend reinvestment plan shares.

What is the significance of the “M” and “F” transaction codes in the DTM filing?

In this filing, the “M” code marks the acquisition of 2,361.83 DT Midstream common shares and the settlement of 2,094 restricted stock units. The “F” code marks the disposition of 1,179 common shares at a reported price of $126.02 per share on February 1, 2026.

What restricted stock unit activity did Melissa Cox report for DT Midstream (DTM)?

Melissa Cox reported 2,094 restricted stock units that vested on February 1, 2026. Each unit represented a contingent right to receive one DT Midstream common share, with any fractional shares paid in cash, and the award balance became zero after the transaction.

At what price were DT Midstream (DTM) shares disposed of in Melissa Cox’s Form 4?

The filing shows 1,179 DT Midstream common shares disposed of at a price of $126.02 per share. This transaction is coded “F” and reduced her directly owned position from 7,532.83 shares to 6,353.83 shares on February 1, 2026.

Do Melissa Cox’s DT Midstream (DTM) holdings include dividend reinvestment plan shares?

Yes. The filing notes that her reported common stock holdings include shares acquired under DT Midstream’s dividend reinvestment plan. This affects the total directly owned share count reported after the February 1, 2026 transactions.