Matthew B. Sicinski - Mar 14, 2025 Form 4 Insider Report for Summit Midstream Corp (SMC)

Role: Senior VP and CAO
Signature: /s/ James D. Johnston, Attorney-in-Fact for Matthew B. Sicinski
Stock symbol: SMC
Transactions as of: Mar 14, 2025
Transactions value $: -$68,028
Form type: 4
Date filed: 3/18/2025, 08:57 PM
Previous filing: Jan 22, 2025
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SMC	Common Stock	Options Exercise		+1.75K	+7.53%		24.9K	Mar 15, 2025	Direct	F1
transaction	SMC	Common Stock	Tax liability	-$15.9K	-426	-1.71%	$37.44	24.5K	Mar 15, 2025	Direct	F2
transaction	SMC	Common Stock	Options Exercise		+2.53K	+10.33%		27K	Mar 15, 2025	Direct	F1
transaction	SMC	Common Stock	Tax liability	-$23.1K	-617	-2.28%	$37.44	26.4K	Mar 15, 2025	Direct	F2
transaction	SMC	Common Stock	Options Exercise		+3.18K	+12.02%		29.6K	Mar 15, 2025	Direct	F1
transaction	SMC	Common Stock	Tax liability	-$29K	-774	-2.62%	$37.44	28.8K	Mar 15, 2025	Direct	F2

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	SMC	Corporation Restricted Stock Units	Award	$0	+4.53K	+14.46%	$0.00	35.9K	Mar 14, 2025	Common Stock	4.53K		Direct	F1, F3, F4
transaction	SMC	Corporation Restricted Stock Units	Award	$0	+4.53K	+12.63%	$0.00	40.4K	Mar 14, 2025	Common Stock	4.53K		Direct	F1, F4, F5
transaction	SMC	Corporation Restricted Stock Units	Options Exercise	$0	-1.75K	-4.32%	$0.00	38.7K	Mar 15, 2025	Common Stock	1.75K		Direct	F1, F4, F6
transaction	SMC	Corporation Restricted Stock Units	Options Exercise	$0	-2.53K	-6.55%	$0.00	36.1K	Mar 15, 2025	Common Stock	2.53K		Direct	F1, F4, F7
transaction	SMC	Corporation Restricted Stock Units	Options Exercise	$0	-3.18K	-8.79%	$0.00	33K	Mar 15, 2025	Common Stock	3.18K		Direct	F1, F4, F8

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

Explanation of Responses:

Id	Content
F1	Each corporation restricted stock unit is the economic equivalent of one common stock.
F2	Common stocks being withheld to pay tax liability.
F3	One-third of the corporation restricted stock units (rounded down to the nearest whole number of units, except in the case of the final vesting date) shall vest on each of the first, second and third anniversaries of the March 14, 2025, reference date, subject to continued employment and accelerated vesting as provided in the applicable award agreement. The Reporting Person will receive 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.
F4	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.
F5	The corporation restricted stock units shall vest if and to the extent that the corporation restricted stock units are earned during the performance period from January 1, 2025 through December 31, 2027, which will depend on whether the performance criteria are achieved as determined by the committee as soon as reasonably practicable, but no later than sixty (60) days following December 31, 2027, the last day of the Performance Period. The vesting of the corporation restricted stock units is subject to continued employment and accelerated vesting as provided in the applicable award agreement. The Reporting Person will receive 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.
F6	The final one-third of the corporation restricted stock units subject to the original award agreement vested on March 15, 2025, the third anniversary of the March 15, 2022, reference date. The Reporting Person received 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.
F7	The final twenty percent of the corporation restricted stock units subject to the original award agreement vested on March 15, 2025, the third anniversary of the March 15, 2022, reference date. The Reporting Person received 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.
F8	One-third of the corporation restricted stock units subject to the original award agreement vested on March 15, 2025, and the final one-third of the corporation restricted stock units shall vest on the third anniversary of the March 15, 2023, reference date, subject to continued employment. The Reporting Person received 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.