Matthew B. Sicinski

CIK: 0001911802

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)8 (40.0%)

Derivative conversions

Awards (A)4 (20.0%)

Compensation grants

Other (G, F, J, C, D, …)8 (40.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

SMC

Summit Midstream Corp

Officer

Discretionary Trading P&L

Holdings

Transaction History (20 total)

SMC
Summit Midstream Corp
Mar 16, 2026
Award(A)
Corporation Restricted Stock Units
Direct
5.7K shares-
SMC
Summit Midstream Corp
Mar 16, 2026
Award(A)
Corporation Restricted Stock Units
Direct
5.7K shares-
SMC
Summit Midstream Corp
Mar 13, 2026
Exercise(M)
Direct
3.2K shares-
SMC
Summit Midstream Corp
Mar 13, 2026
Exercise(M)
Direct
6.1K shares-
SMC
Summit Midstream Corp
Mar 13, 2026
Tax Payment(F)
Direct
1.5K shares at avg. $30.29$46K
SMC
Summit Midstream Corp
Mar 13, 2026
Exercise(M)
Direct
1.5K shares-
SMC
Summit Midstream Corp
Mar 13, 2026
Tax Payment(F)
Direct
368 shares at avg. $30.29$11K
SMC
Summit Midstream Corp
Mar 13, 2026
Tax Payment(F)
Direct
773 shares at avg. $30.29$23K
SMC
Summit Midstream Corp
Jan 16, 2026
Exercise(M)
Direct
3.6K shares-
SMC
Summit Midstream Corp
Jan 16, 2026
Tax Payment(F)
Direct
1.1K shares at avg. $26.81$29K
SMC
Summit Midstream Corp
Mar 15, 2025
Exercise(M)
Direct
1.7K shares-
SMC
Summit Midstream Corp
Mar 15, 2025
Tax Payment(F)
Direct
426 shares at avg. $37.44$16K
SMC
Summit Midstream Corp
Mar 15, 2025
Tax Payment(F)
Direct
774 shares at avg. $37.44$29K
SMC
Summit Midstream Corp
Mar 15, 2025
Exercise(M)
Direct
3.2K shares-
SMC
Summit Midstream Corp
Mar 15, 2025
Tax Payment(F)
Direct
617 shares at avg. $37.44$23K
SMC
Summit Midstream Corp
Mar 15, 2025
Exercise(M)
Direct
2.5K shares-
SMC
Summit Midstream Corp
Mar 14, 2025
Award(A)
Corporation Restricted Stock Units
Direct
4.5K shares-
SMC
Summit Midstream Corp
Mar 14, 2025
Award(A)
Corporation Restricted Stock Units
Direct
4.5K shares-
SMC
Summit Midstream Corp
Jan 18, 2025
Exercise(M)
Direct
3.6K shares-
SMC
Summit Midstream Corp
Jan 18, 2025
Tax Payment(F)
Direct
1.1K shares at avg. $41.57$44K

		Type	Shares	Price		Ownership
Mar 16, 2026	SMC Summit Midstream Corp	Award(A) Corporation Restricted Stock Units	5,692	-	-	Direct
Mar 16, 2026	SMC Summit Midstream Corp	Award(A) Corporation Restricted Stock Units	5,692	-	-	Direct
Mar 13, 2026	SMC Summit Midstream Corp	Exercise(M)	3,174	-	$0	Direct
Mar 13, 2026	SMC Summit Midstream Corp	Exercise(M)	6,139	-	$0	Direct
Mar 13, 2026	SMC Summit Midstream Corp	Tax Payment(F)	1,525	$30.29	$46,192	Direct
Mar 13, 2026	SMC Summit Midstream Corp	Exercise(M)	1,511	-	$0	Direct
Mar 13, 2026	SMC Summit Midstream Corp	Tax Payment(F)	368	$30.29	$11,147	Direct
Mar 13, 2026	SMC Summit Midstream Corp	Tax Payment(F)	773	$30.29	$23,414	Direct
Jan 16, 2026	SMC Summit Midstream Corp	Exercise(M)	3,593	-	$0	Direct
Jan 16, 2026	SMC Summit Midstream Corp	Tax Payment(F)	1,066	$26.81	$28,579	Direct
Mar 15, 2025	SMC Summit Midstream Corp	Exercise(M)	1,746	-	-	Direct
Mar 15, 2025	SMC Summit Midstream Corp	Tax Payment(F)	426	$37.44	$15,949	Direct
Mar 15, 2025	SMC Summit Midstream Corp	Tax Payment(F)	774	$37.44	$28,979	Direct
Mar 15, 2025	SMC Summit Midstream Corp	Exercise(M)	3,175	-	-	Direct
Mar 15, 2025	SMC Summit Midstream Corp	Tax Payment(F)	617	$37.44	$23,100	Direct
Mar 15, 2025	SMC Summit Midstream Corp	Exercise(M)	2,531	-	-	Direct
Mar 14, 2025	SMC Summit Midstream Corp	Award(A) Corporation Restricted Stock Units	4,531	-	-	Direct
Mar 14, 2025	SMC Summit Midstream Corp	Award(A) Corporation Restricted Stock Units	4,531	-	-	Direct
Jan 18, 2025	SMC Summit Midstream Corp	Exercise(M)	3,593	-	$0	Direct
Jan 18, 2025	SMC Summit Midstream Corp	Tax Payment(F)	1,066	$41.57	$44,314	Direct

1-20 of 20 transactions

About Sicinski Matthew B.

Sicinski Matthew B. (SEC CIK 0001911802) files insider reports with the SEC as Senior VP and CAO of Summit Midstream Corp (SMC).

Signal8 holds 4 ownership filings by Sicinski Matthew B., all Form 4s, filed between Jan 22, 2025 and Mar 17, 2026. Those filings report 20 transactions, from Jan 18, 2025 to Mar 16, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Sicinski Matthew B.'s filings is in HOUSTON, TX.

Recent filings by Sicinski Matthew B.

Mar 16, 2026: Grants or awards of SMC derivative securities (2 lines, Form 4, code A).
Mar 13, 2026: Option exercises of SMC shares (2 lines, Form 4, code M).
Mar 13, 2026: Tax withholding of SMC shares (Form 4, code F).
Mar 13, 2026: Option exercise of SMC shares (Form 4, code M).
Mar 13, 2026: Tax withholdings of SMC shares (2 lines, Form 4, code F).

Other insiders filing for Summit Midstream Corp (SMC)

Johnston James David, Executive VP, GC, CCO and Secy
PETERS JERRY L, Director
Connect Midstream, LLC, 10% Owner
Oates Rommel, Director
Stone Carolyn J, Director
Jacobe James Lee, Director

How to read Form 4 transaction codes