Summit Midstream Corp (SMC) CFO nets shares after RSU vesting

Rhea-AI Filing Summary

Summit Midstream Corp Executive VP and CFO William J. Mault reported equity compensation activity on a Form 4 dated January 16, 2026. He acquired 10,121 shares of common stock through the vesting and settlement of an equal number of corporation restricted stock units, which are the economic equivalent of common stock on a one-for-one basis.

To cover tax obligations from this vesting, 2,757 common shares were withheld at a price of $26.81 per share. After these transactions, Mault directly beneficially owned 70,588 shares of common stock and 84,746 corporation restricted stock units, which include multiple tranches with different vesting dates. The remaining restricted stock units and associated distribution equivalent rights do not expire and will settle in stock or cash upon future vesting, at the issuer’s discretion.

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^*

Mault William J.

(Last) (First) (Middle)

C/O SUMMIT MIDSTREAM PARTNERS, LP

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)
	Executive VP and CFO

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		10,121	A	(1)	73,345	D
Common Stock	01/16/2026		F		2,757(2)	D	$26.81	70,588	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			10,121	(3)	(4)	Common Stock	10,121	$0	84,746(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 William J. Mault	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).
** 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.
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FAQ

What insider transaction did Summit Midstream Corp (SMC) report for its CFO?

The filing shows that Executive VP and CFO William J. Mault acquired 10,121 shares of common stock on January 16, 2026 through the vesting and settlement of an equal number of corporation restricted stock units.

How many Summit Midstream Corp (SMC) shares were withheld for taxes in this Form 4?

The Form 4 reports that 2,757 shares of common stock were withheld at $26.81 per share to satisfy tax liabilities arising from the restricted stock unit vesting.

How many Summit Midstream Corp (SMC) common shares does the CFO own after the reported transactions?

Following the reported transactions, William J. Mault directly beneficially owned 70,588 shares of Summit Midstream Corp common stock.

What is the status of the CFO’s restricted stock units at Summit Midstream Corp (SMC)?

After the vesting of 10,121 units, the CFO held 84,746 corporation restricted stock units, which include other tranches with different vesting dates and settle into common stock or cash upon vesting.

Do the Summit Midstream Corp (SMC) restricted stock units or DERs reported for the CFO expire?

The filing states that the corporation restricted stock units and associated distribution equivalent rights do not expire and are settled upon vesting in common stock or cash at the issuer’s discretion.

What role does William J. Mault hold at Summit Midstream Corp (SMC)?

William J. Mault is identified as an Officer of Summit Midstream Corp, serving as Executive VP and CFO, and he is not listed as a director or 10% owner.