DT Midstream director granted 1,093 restricted stock units

Tumminello Peter I reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Tumminello Peter I reported acquisition or exercise transactions in this Form 4 filing.

DT Midstream, Inc. director Peter I. Tumminello received a grant of 1,093 restricted stock units as equity-based compensation. Each unit represents a contingent right to one share of DT Midstream common stock, with any fractional shares settled in cash. These units will vest on May 5, 2027, if he continues serving the company through that date, and his reported holdings after this grant are 1,093 restricted stock units.

Insider Trade Summary

Grant/Award: 1,093 shares

Grant/Award 1 txn

Insider Tumminello Peter I

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	1,093	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 1,093 contracts (Direct)

Footnotes (2)

1. F1. 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.
2. F2. This restricted stock unit will vest on May 5, 2027, subject to the Reporting Person's continued service with the Issuer through the vesting date.

Key Figures

RSUs granted: 1,093 units Underlying shares: 1,093 shares Total RSUs after grant: 1,093 units +2 more

5 metrics

RSUs granted 1,093 units Restricted stock unit award to director on May 5, 2026

Underlying shares 1,093 shares Common stock underlying the restricted stock units

Total RSUs after grant 1,093 units Holdings following the reported transaction

Vesting date May 5, 2027 RSUs vest subject to continued service through this date

Grant price $0.00 per unit Equity award with no cash paid by the director

Key Terms

Restricted Stock Units, contingent right, vest, fractional shares

4 terms

Restricted Stock Units financial

"Each restricted stock unit represents a contingent right to receive one share"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

contingent right financial

"represents a contingent right to receive one share of the Issuer's common stock"

vest financial

"This restricted stock unit will vest on May 5, 2027, subject to the Reporting Person's continued service"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

fractional shares financial

"with any fractional shares being paid in cash"

Fractional shares are portions of a whole share of a stock or fund, allowing investors to own less than one full unit. They make it possible to invest a specific dollar amount rather than buy whole shares, like buying a slice of a pizza instead of the entire pie. For investors this lowers the cost barrier, helps with diversification, and lets you reinvest dividends or purchase expensive stocks in small, precise amounts.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did DT Midstream (DTM) report for Peter I. Tumminello?

DT Midstream reported that director Peter I. Tumminello received 1,093 restricted stock units. These units are a form of equity compensation that convert into common shares upon vesting, aligning the director’s interests with shareholders over time rather than providing immediate cash.

How many DT Midstream (DTM) restricted stock units were granted in this Form 4?

The Form 4 shows a grant of 1,093 restricted stock units to Peter I. Tumminello. Each unit is tied to one share of DT Midstream common stock, and his reported holdings after the grant total 1,093 restricted stock units, all held directly.

When do Peter I. Tumminello’s DT Midstream (DTM) restricted stock units vest?

The restricted stock units will vest on May 5, 2027. Vesting is contingent on Tumminello’s continued service with DT Midstream through that date, meaning he must remain in his director role until then to receive the common shares.

What does each DT Midstream (DTM) restricted stock unit represent in this filing?

Each restricted stock unit represents a contingent right to receive one share of DT Midstream common stock. If the calculation results in fractional shares, those fractions will be paid in cash rather than issued as partial share interests.

Did Peter I. Tumminello buy or sell DT Midstream (DTM) shares on the market?

The filing reflects an award of restricted stock units, not an open-market purchase or sale. It is classified as a grant or other acquisition of derivative securities, providing future rights to shares rather than recording a cash transaction in the market.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/07/2026 - 06:24 PM EDT Learn about SEC filing dates

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^*

Tumminello Peter I

(Last) (First) (Middle)

500 WOODWARD AVE., 29TH FLOOR

(Street)

DETROIT MICHIGAN 48226

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/05/2026

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

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

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

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

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)	05/05/2026		A		1,093		(2)	(2)	Common Stock	1,093	$0	1,093	D

Explanation of Responses:

1. 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.

2. This restricted stock unit will vest on May 5, 2027, subject to the Reporting Person's continued service with the Issuer through the vesting date.

	/s/ Andrew Hayner, Attorney-in-Fact	05/07/2026
	** 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.
* Form 4: SEC 1474 (03-26)