Joseph Peter Finland - 01 Feb 2026 Form 4 Insider Report for DT Midstream, Inc. (DTM)

Role: Chief Accounting Officer
Signature: /s/ Andrew Hayner, Attorney-in-Fact
Issuer symbol: DTM
Transactions as of: 01 Feb 2026
Net transactions value: -$18,273
Form type: 4
Filing time: 03 Feb 2026, 19:07:49 UTC
Previous filing: 23 Sep 2025
Next filing: 19 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Finland Joseph Peter	Chief Accounting Officer	500 WOODWARD AVE., SUITE 2900, DETROIT	/s/ Andrew Hayner, Attorney-in-Fact	03 Feb 2026	0002087681

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	DTM	Common Stock	Options Exercise		+321			321	01 Feb 2026	Direct	F1, F2
transaction	DTM	Common Stock	Tax liability	$18,273	-145	-45%	$126.02	176	01 Feb 2026	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	DTM	Restricted Stock Units	Options Exercise	$0	-285	-100%	$0.000000	0	01 Feb 2026	Common Stock	285		Direct	F2, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Includes shares of the Issuer's common stock acquired under the Issuer's dividend reinvestment plan.
F2	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.
F3	This restricted stock unit vested on February 1, 2026.