David Slater - Aug 2, 2023 Form 4 Insider Report for DT Midstream, Inc. (DTM)

Role: President and CEO, Director
Signature: /s/ Andrew Hayner, Attorney-in-Fact
Stock symbol: DTM
Transactions as of: Aug 2, 2023
Transactions value $: -$564,465
Form type: 4
Date filed: 8/4/2023, 04:47 PM
Previous filing: May 8, 2023
Next filing: Jan 30, 2024

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	DTM	Common Stock	Options Exercise		+24K	+72.15%		57.3K	Aug 2, 2023	Direct	F1, F2
transaction	DTM	Common Stock	Tax liability	-$564K	-10.9K	-19.09%	$51.62	46.3K	Aug 2, 2023	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	-21.7K	-25%	$0.00	65.2K	Aug 2, 2023	Common Stock	21.7K		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 25% on August 2, 2023 and will vest 25% on August 2, 2024 and 50% on August 2, 2025, subject to the Reporting Person's continued service with the Issuer through the applicable vesting date.