Sicinski Matthew B. 4

Accession 0002024218-26-000008

CIK 0002024218other

Filed

Jan 20, 7:00 PM ET

Accepted

Jan 21, 6:55 PM ET

Size

9.2 KB

Accession

0002024218-26-000008

AI-generated summary of this filing

Updated Jan 21, 2026

Summit Midstream (SMC) CAO Matthew Sicinski Receives 3,593 RSUs

What Happened

Matthew B. Sicinski, Senior Vice President and Chief Accounting Officer of Summit Midstream Corp (SMC), had 3,593 corporation restricted stock units (CRSUs) vest on January 16, 2026. The vesting/conversion is reported as an exercise/conversion of a derivative security.
Of the 3,593 vested shares, 1,066 common shares were withheld to cover tax liability at $26.81 per share, for a withholding value of $28,579. Net shares delivered to Sicinski were 3,593 - 1,066 = 2,527 shares.
This was not an open-market purchase or sale by the insider but settlement of an award (vested RSUs/CRSUs).

Key Details

Transaction date: January 16, 2026. Filing date: January 21, 2026 (filed 5 days after the transaction; appears late relative to the typical two-business-day Form 4 deadline).
Reported items: 3,593 CRSUs converted/settled (reported as derivative exercise/conversion); 1,066 shares withheld for taxes at $26.81 each (value $28,579).
Shares owned after the transaction: Not specified in the provided excerpt of the filing.
Footnotes: CRSUs are the economic equivalent of common stock (F1). Withholding was used to pay tax liability (F2). One‑third of the award vested on Jan 16, 2026 with remaining tranches vesting later (F3–F5). CRSUs may be settled in stock or cash and do not expire (F4).

Context

This is a routine vesting/settlement of restricted stock units rather than a market buy or sale; the withholding of shares to cover taxes is a common cashless settlement practice. The filing shows both the conversion of the derivative (CRSUs) and the tax-withholding disposition; the $0 disposition entry reflects conversion/settlement of the derivative security.

Form 4

Period: 2026-01-16

Senior VP and CAO

Transactions

Exercise/Conversion
Common Stock
[F1]
2026-01-16+3,593→ 32,413 total
Tax Payment
Common Stock
[F2]
2026-01-16$26.81/sh−1,066$28,579→ 31,347 total
Exercise/Conversion
Corporation Restricted Stock Units
[F1][F3][F4][F5]
2026-01-16−3,593→ 29,362 total
→ Common Stock (3,593 underlying)

Footnotes (5)

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

Signature

/s/ James D. Johnston, Attorney-in-Fact for Matthew B. Sicinski|2026-01-21

1 file

Summit Midstream Corp

CIK 0002024218

Entity typeother