Summit Midstream (SMC) CEO logs RSU vesting and tax share withholding

Rhea-AI Filing Summary

Summit Midstream Corp Chairman, President and CEO J. Heath Deneke reported equity award activity involving restricted stock units and common shares. On January 16, 2026, 32,754 corporation restricted stock units were converted at an exercise price of $0, resulting in the acquisition of 32,754 shares of common stock. The filing shows that 8,216 common shares were withheld at a price of $26.81 per share to cover tax liabilities associated with the vesting.

After these transactions, Deneke directly held 290,708 shares of common stock and 283,556 corporation restricted stock units. Each corporation restricted stock unit is economically equivalent to one share of common stock and is settled in stock or cash upon vesting, with related distribution equivalent rights that pay accumulated distributions in cash on the vesting date.

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

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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^*

Deneke J Heath

(Last) (First) (Middle)

C/O SUMMIT MIDSTREAM CORPORATION

910 LOUISIANA STREET, SUITE 4200

(Street)

HOUSTON TX 77002

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Summit Midstream Corp [ SMC ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chairman, President and CEO

3. Date of Earliest Transaction (Month/Day/Year)
01/16/2026

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	01/16/2026		M		32,754	A	(1)	298,924	D
Common Stock	01/16/2026		F		8,216(2)	D	$26.81	290,708	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
Corporation Restricted Stock Units	(1)	01/16/2026		M			32,754	(3)	(4)	Common Stock	32,754	$0	283,556(5)	D

Explanation of Responses:

1. Each corporation restricted stock unit is the economic equivalent of one common stock.

2. Common stocks being withheld to pay tax liability.

3. One-third of the corporation restricted stock units subject to the original award agreement vested on January 16, 2026, with the remaining corporation restricted stock units subject to vesting on the third anniversary of the January 18, 2024 reference date, subject to continued employment. The Reporting Person received distribution equivalent rights ("DERs") for each corporation restricted stock unit, providing for payment on the vesting date of a lump sum of cash equal to the accrued distributions from and after the grant date of the corporation restricted stock units.

4. The corporation restricted stock units and associated DERs do not expire. The corporation restricted stock units are settled upon vesting in common stocks (on a one-for-one basis) or in cash, at the discretion of the Issuer.

5. This total includes corporation restricted stock units from other tranches with different vesting dates.

Remarks:

	/s/ James D. Johnston, Attorney-in-Fact for J. Heath Deneke	01/21/2026
	** 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).
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FAQ

What insider activity did Summit Midstream Corp (SMC) report for J. Heath Deneke?

The filing reports that J. Heath Deneke, Chairman, President and CEO of Summit Midstream Corp, had 32,754 corporation restricted stock units convert into 32,754 shares of common stock and 8,216 common shares withheld to cover tax liabilities on January 16, 2026.

How many Summit Midstream Corp (SMC) shares does J. Heath Deneke hold after the Form 4 transactions?

After the reported transactions, J. Heath Deneke directly held 290,708 shares of common stock and 283,556 corporation restricted stock units, as disclosed in the filing.

What price was used to withhold Summit Midstream Corp (SMC) shares for taxes?

The filing shows that 8,216 common shares were withheld at a price of $26.81 per share to satisfy tax liabilities related to the vesting event.

What are Summit Midstream Corp corporation restricted stock units reported in this Form 4?

The corporation restricted stock units are equity awards where each unit is economically equivalent to one share of common stock and is settled in common stock or cash upon vesting, at the issuer’s discretion. They also carry distribution equivalent rights that pay cash equal to accrued distributions at vesting.

When did the reported Summit Midstream Corp (SMC) restricted stock units vest?

The filing states that one-third of the corporation restricted stock units subject to the original award agreement vested on January 16, 2026, with remaining units scheduled to vest on the third anniversary of the January 18, 2024 reference date, subject to continued employment.

Does the CEO’s Form 4 indicate a market sale of Summit Midstream Corp (SMC) shares?

The filing describes shares coded as F, which are common shares withheld to pay tax liability in connection with the vesting of equity awards, rather than an open-market sale initiated for investment purposes.