SICINSKI MATTHEW B.

PrivateCIK: 1911802
Location

HOUSTON, TX

SICINSKI MATTHEW B. (Senior VP and CAO) exercised options at SUMMIT MIDSTREAM CORP

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 3 exercises
InsiderSICINSKI MATTHEW B.CIK 1911802
IssuerSUMMIT MIDSTREAM CORPCIK 2024218
Officer· Senior VP and CAO
Since Aug 2024
+8.72K
Net shares
Net buyer
$80.8K
Total sold
0
Open market trades
0B · 0S
11
Total transactions
22.21K acquired · 13.49K disposed
Non-Derivative Transactions6

Common Stock

Direct
M · Option Exercise

Shares

+6.14K

Price / share

Trade value

% of position

19.6%
3/13/2026
31.35K37.49K

Common Stock

Direct
F · Tax Withholding

Shares

1.52K

Price / share

$30.29

Trade value

$46.19K

% of position

4.1%
3/13/2026
37.49K35.96K

Common Stock

Direct
M · Option Exercise

Shares

+1.51K

Price / share

Trade value

% of position

4.2%
3/13/2026
35.96K37.47K

Common Stock

Direct
F · Tax Withholding

Shares

368.00

Price / share

$30.29

Trade value

$11.15K

% of position

1.0%
3/13/2026
37.47K37.10K

Common Stock

Direct
M · Option Exercise

Shares

+3.17K

Price / share

Trade value

% of position

8.6%
3/13/2026
37.10K40.28K

Common Stock

Direct
F · Tax Withholding

Shares

773.00

Price / share

$30.29

Trade value

$23.41K

% of position

1.9%
3/13/2026
40.28K39.51K
Total

Net shares

+8.16K

Net value

-$80.75K

Derivative Transactions5

Corporation Restricted Stock Units

Direct
M · Option Exercise
Converts to

Common Stock

6.14K shares

Shares

6.14K

Strike price

Held after

23.22K

Exercisable

3/13/2026

Corporation Restricted Stock Units

Direct
M · Option Exercise
Converts to

Common Stock

1.51K shares

Shares

1.51K

Strike price

Held after

21.71K

Exercisable

3/13/2026

Corporation Restricted Stock Units

Direct
M · Option Exercise
Converts to

Common Stock

3.17K shares

Shares

3.17K

Strike price

Held after

18.54K

Exercisable

3/13/2026

Corporation Restricted Stock Units

Direct
A · Award
Converts to

Common Stock

5.69K shares

Shares

+5.69K

Strike price

Held after

24.23K

Exercisable

3/16/2026

Corporation Restricted Stock Units

Direct
A · Award
Converts to

Common Stock

5.69K shares

Shares

+5.69K

Strike price

Held after

29.71K

Exercisable

3/16/2026
SICINSKI MATTHEW B. — Insider Transaction (Form 4) Filed Mar 17, 2026 | Finecho