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person · Reporting owner

Sicinski Matthew B.

Disclosed activity across 2 companies

Tapewire entity
60092
SEC CIK
0001911802

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Summit Midstream CorpSMC · Entity 5504Senior VP and CAOMarch 13, 2026March 17, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Summit Midstream Corp

Report date March 13, 2026 · Filed March 17, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect39,505 Ending reported balance After 2026-03-13 transaction · row 6
6 source rows · reconciled sequence

Row 1 · 2026-03-13 · Exercise / conversion · Acquired 6,139 · Balance 37,486

F1: Each corporation restricted stock unit is the economic equivalent of one common stock.

Row 2 · 2026-03-13 · Tax withholding · Disposed 1,525 · Balance 35,961

F2: Common stocks being withheld to pay tax liability.

Row 3 · 2026-03-13 · Exercise / conversion · Acquired 1,511 · Balance 37,472

F1: Each corporation restricted stock unit is the economic equivalent of one common stock.

Row 4 · 2026-03-13 · Tax withholding · Disposed 368 · Balance 37,104

F2: Common stocks being withheld to pay tax liability.

Row 5 · 2026-03-13 · Exercise / conversion · Acquired 3,174 · Balance 40,278

F1: Each corporation restricted stock unit is the economic equivalent of one common stock.

Row 6 · 2026-03-13 · Tax withholding · Disposed 773 · Balance 39,505

F2: Common stocks being withheld to pay tax liability.

Corporation Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect23,223 Reported balance After 2026-03-13 transaction · row 7 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 7 · 2026-03-13 · Exercise / conversion · Disposed 6,139 · Balance 23,223

F1: Each corporation restricted stock unit is the economic equivalent of one common stock.

F3: The corporation restricted stock units subject to the original award agreement vested on March 13, 2026. 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.

Corporation Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect21,712 Reported balance After 2026-03-13 transaction · row 8 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 8 · 2026-03-13 · Exercise / conversion · Disposed 1,511 · Balance 21,712

F1: Each corporation restricted stock unit is the economic equivalent of one common stock.

F5: 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) vested on March 13, 2026, with the remaining corporation restricted stock units vesting on the 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 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.

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.

Corporation Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect18,538 Reported balance After 2026-03-13 transaction · row 9 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 9 · 2026-03-13 · Exercise / conversion · Disposed 3,174 · Balance 18,538

F1: Each corporation restricted stock unit is the economic equivalent of one common stock.

F6: The final one-third of the corporation restricted stock units subject to the original award agreement vested on March 13, 2026. 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.

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.

Corporation Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect24,230 Reported balance After 2026-03-16 transaction · row 10 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 10 · 2026-03-16 · Grant · Acquired 5,692 · Balance 24,230

F1: Each corporation restricted stock unit is the economic equivalent of one common stock.

F7: 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 16, 2026, reference date, 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.

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.

Corporation Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect29,712 Reported balance After 2026-03-16 transaction · row 11 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 11 · 2026-03-16 · Grant · Acquired 5,692 · Balance 29,712

F1: Each corporation restricted stock unit is the economic equivalent of one common stock.

F8: 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, 2026 through December 31, 2028, 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, 2028, 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.

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.

F9: This total includes corporation restricted stock units from other tranches with different vesting dates. On March 16, 2026, when the original award agreement vested, it was certified at an achievement level of 96.7% of the target number of corporation restricted stock units. The remaining 3.3% of the target corporation restricted stock units that were not earned based on the certified performance level were forfeited. The difference between the number of outstanding awards reflected in the Reporting Person's brokerage account and the number previously reported is attributable to this certification and the corresponding forfeiture of the unearned portion of the original award.

Filing footnotes · ownership attribution and instrument terms

F1: Each corporation restricted stock unit is the economic equivalent of one common stock.

F2: Common stocks being withheld to pay tax liability.

F3: The corporation restricted stock units subject to the original award agreement vested on March 13, 2026. 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: 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) vested on March 13, 2026, with the remaining corporation restricted stock units vesting on the 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 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.

F6: The final one-third of the corporation restricted stock units subject to the original award agreement vested on March 13, 2026. 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: 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 16, 2026, reference date, 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.

F8: 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, 2026 through December 31, 2028, 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, 2028, 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.

F9: This total includes corporation restricted stock units from other tranches with different vesting dates. On March 16, 2026, when the original award agreement vested, it was certified at an achievement level of 96.7% of the target number of corporation restricted stock units. The remaining 3.3% of the target corporation restricted stock units that were not earned based on the certified performance level were forfeited. The difference between the number of outstanding awards reflected in the Reporting Person's brokerage account and the number previously reported is attributable to this certification and the corresponding forfeiture of the unearned portion of the original award.

Past disclosures · reporting ended (1)

No longer tracked through insider filings. These historical balances do not imply present ownership or a zero position.

Summit Midstream Partners, LP

Report date August 01, 2024 · Filed August 02, 2024

Section 16 reporting ended · disclosed 2024-08-02. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common UnitsSEC Table I · non-derivativeDirect0 Reported balance After 2024-08-01 transaction · row 1
1 source row

Row 1 · 2024-08-01 · Disposition to issuer · Disposed 20,658 · Balance 0

F1: On August 1, 2024 (the "Effective Time"), in connection with the corporate reorganization of Summit Midstream Partners, LP (the "Partnership"), the Partnership converted from a master limited partnership to a C corporation (the "Corporate Reorganization") through the merger between the Partnership and Summit SMC NewCo, LLC ("Merger Sub"), a wholly-owned subsidiary of Summit Midstream Corporation (the "Corporation"), wherein Merger Sub merged with and into the Partnership (the "Merger"), with the Partnership surviving the Merger as a wholly-owned subsidiary of the Corporation.

F2: After the Effective Time, the Reporting Person holds an aggregate 0 phantom units. This total includes phantom units from other tranches with different vesting dates.

Phantom UnitsSEC Table II · derivative / convertible securityDirect0 Reported balance After 2024-08-01 transaction · row 2 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 2 · 2024-08-01 · Disposition to issuer · Disposed 34,938 · Balance 0

F3: Each phantom unit is the economic equivalent of one common unit.

F1: On August 1, 2024 (the "Effective Time"), in connection with the corporate reorganization of Summit Midstream Partners, LP (the "Partnership"), the Partnership converted from a master limited partnership to a C corporation (the "Corporate Reorganization") through the merger between the Partnership and Summit SMC NewCo, LLC ("Merger Sub"), a wholly-owned subsidiary of Summit Midstream Corporation (the "Corporation"), wherein Merger Sub merged with and into the Partnership (the "Merger"), with the Partnership surviving the Merger as a wholly-owned subsidiary of the Corporation.

F4: The phantom units and associated distribution equivalent rights do not expire. The phantom units are settled upon vesting in common units (on a one-for-one basis) or in cash, at the discretion of the Partnership.

F2: After the Effective Time, the Reporting Person holds an aggregate 0 phantom units. This total includes phantom units from other tranches with different vesting dates.

Filing footnotes · ownership attribution and instrument terms

F1: On August 1, 2024 (the "Effective Time"), in connection with the corporate reorganization of Summit Midstream Partners, LP (the "Partnership"), the Partnership converted from a master limited partnership to a C corporation (the "Corporate Reorganization") through the merger between the Partnership and Summit SMC NewCo, LLC ("Merger Sub"), a wholly-owned subsidiary of Summit Midstream Corporation (the "Corporation"), wherein Merger Sub merged with and into the Partnership (the "Merger"), with the Partnership surviving the Merger as a wholly-owned subsidiary of the Corporation.

F2: After the Effective Time, the Reporting Person holds an aggregate 0 phantom units. This total includes phantom units from other tranches with different vesting dates.

F3: Each phantom unit is the economic equivalent of one common unit.

F4: The phantom units and associated distribution equivalent rights do not expire. The phantom units are settled upon vesting in common units (on a one-for-one basis) or in cash, at the discretion of the Partnership.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
March 16, 2026 Filed Mar 17, 2026 23:49 UTC Summit Midstream Corp SMC · Entity 5504 GrantCorporation Restricted Stock Units · Derivative 5,692 $0.00 $0.00
Disclosure

SEC source: 0002024218-26-000034 · wk-form4_1773791348.xml · derivative · entry 11

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,712

Underlying: Common Stock · 5,692 shares

Expires not disclosed

F1 · derivative.exercise_price: Each corporation restricted stock unit is the economic equivalent of one common stock.

F8 · derivative.exercise_date: 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, 2026 through December 31, 2028, 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, 2028, 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.

F4 · derivative.expiration_date: 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.

F9 · balance_after: This total includes corporation restricted stock units from other tranches with different vesting dates. On March 16, 2026, when the original award agreement vested, it was certified at an achievement level of 96.7% of the target number of corporation restricted stock units. The remaining 3.3% of the target corporation restricted stock units that were not earned based on the certified performance level were forfeited. The difference between the number of outstanding awards reflected in the Reporting Person's brokerage account and the number previously reported is attributable to this certification and the corresponding forfeiture of the unearned portion of the original award.

Read SEC document
March 16, 2026 Filed Mar 17, 2026 23:49 UTC Summit Midstream Corp SMC · Entity 5504 GrantCorporation Restricted Stock Units · Derivative 5,692 $0.00 $0.00
Disclosure

SEC source: 0002024218-26-000034 · wk-form4_1773791348.xml · derivative · entry 10

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,230

Underlying: Common Stock · 5,692 shares

Expires not disclosed

F1 · derivative.exercise_price: Each corporation restricted stock unit is the economic equivalent of one common stock.

F7 · derivative.exercise_date: 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 16, 2026, reference date, 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.

F4 · derivative.expiration_date: 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.

Read SEC document
March 13, 2026 Filed Mar 17, 2026 23:49 UTC Summit Midstream Corp SMC · Entity 5504 Exercise / conversionCorporation Restricted Stock Units · Derivative 3,174 $0.00 $0.00
Disclosure

SEC source: 0002024218-26-000034 · wk-form4_1773791348.xml · derivative · entry 9

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,538

Underlying: Common Stock · 3,174 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each corporation restricted stock unit is the economic equivalent of one common stock.

F6 · derivative.exercise_date: The final one-third of the corporation restricted stock units subject to the original award agreement vested on March 13, 2026. 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.

F4 · derivative.expiration_date: 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.

Read SEC document
March 13, 2026 Filed Mar 17, 2026 23:49 UTC Summit Midstream Corp SMC · Entity 5504 Exercise / conversionCorporation Restricted Stock Units · Derivative 1,511 $0.00 $0.00
Disclosure

SEC source: 0002024218-26-000034 · wk-form4_1773791348.xml · derivative · entry 8

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,712

Underlying: Common Stock · 1,511 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each corporation restricted stock unit is the economic equivalent of one common stock.

F5 · derivative.exercise_date: 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) vested on March 13, 2026, with the remaining corporation restricted stock units vesting on the 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 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.

F4 · derivative.expiration_date: 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.

Read SEC document
March 13, 2026 Filed Mar 17, 2026 23:49 UTC Summit Midstream Corp SMC · Entity 5504 Exercise / conversionCorporation Restricted Stock Units · Derivative 6,139 $0.00 $0.00
Disclosure

SEC source: 0002024218-26-000034 · wk-form4_1773791348.xml · derivative · entry 7

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,223

Underlying: Common Stock · 6,139 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each corporation restricted stock unit is the economic equivalent of one common stock.

F3 · derivative.exercise_date: The corporation restricted stock units subject to the original award agreement vested on March 13, 2026. 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 · derivative.expiration_date: 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.

Read SEC document
March 13, 2026 Filed Mar 17, 2026 23:49 UTC Summit Midstream Corp SMC · Entity 5504 Tax withholdingCommon Stock 773 $30.29 $23,414.17
Disclosure

SEC source: 0002024218-26-000034 · wk-form4_1773791348.xml · nonDerivative · entry 6

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,505

F2 · shares: Common stocks being withheld to pay tax liability.

Read SEC document
March 13, 2026 Filed Mar 17, 2026 23:49 UTC Summit Midstream Corp SMC · Entity 5504 Exercise / conversionCommon Stock 3,174 Not disclosed Not disclosed
Disclosure

SEC source: 0002024218-26-000034 · wk-form4_1773791348.xml · nonDerivative · entry 5

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,278

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each corporation restricted stock unit is the economic equivalent of one common stock.

Read SEC document
March 13, 2026 Filed Mar 17, 2026 23:49 UTC Summit Midstream Corp SMC · Entity 5504 Tax withholdingCommon Stock 368 $30.29 $11,146.72
Disclosure

SEC source: 0002024218-26-000034 · wk-form4_1773791348.xml · nonDerivative · entry 4

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,104

F2 · shares: Common stocks being withheld to pay tax liability.

Read SEC document
March 13, 2026 Filed Mar 17, 2026 23:49 UTC Summit Midstream Corp SMC · Entity 5504 Exercise / conversionCommon Stock 1,511 Not disclosed Not disclosed
Disclosure

SEC source: 0002024218-26-000034 · wk-form4_1773791348.xml · nonDerivative · entry 3

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,472

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each corporation restricted stock unit is the economic equivalent of one common stock.

Read SEC document
March 13, 2026 Filed Mar 17, 2026 23:49 UTC Summit Midstream Corp SMC · Entity 5504 Tax withholdingCommon Stock 1,525 $30.29 $46,192.25
Disclosure

SEC source: 0002024218-26-000034 · wk-form4_1773791348.xml · nonDerivative · entry 2

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,961

F2 · shares: Common stocks being withheld to pay tax liability.

Read SEC document
March 13, 2026 Filed Mar 17, 2026 23:49 UTC Summit Midstream Corp SMC · Entity 5504 Exercise / conversionCommon Stock 6,139 Not disclosed Not disclosed
Disclosure

SEC source: 0002024218-26-000034 · wk-form4_1773791348.xml · nonDerivative · entry 1

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,486

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each corporation restricted stock unit is the economic equivalent of one common stock.

Read SEC document
January 16, 2026 Filed Jan 21, 2026 23:55 UTC Summit Midstream Corp SMC · Entity 5504 Exercise / conversionCorporation Restricted Stock Units · Derivative 3,593 $0.00 $0.00
Disclosure

SEC source: 0002024218-26-000008 · wk-form4_1769039708.xml · derivative · entry 3

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,362

Underlying: Common Stock · 3,593 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each corporation restricted stock unit is the economic equivalent of one common stock.

F3 · derivative.exercise_date: 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 · derivative.expiration_date: 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 · balance_after: This total includes corporation restricted stock units from other tranches with different vesting dates.

Read SEC document
January 16, 2026 Filed Jan 21, 2026 23:55 UTC Summit Midstream Corp SMC · Entity 5504 Tax withholdingCommon Stock 1,066 $26.81 $28,579.46
Disclosure

SEC source: 0002024218-26-000008 · wk-form4_1769039708.xml · nonDerivative · entry 2

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,347

F2 · shares: Common stocks being withheld to pay tax liability.

Read SEC document
January 16, 2026 Filed Jan 21, 2026 23:55 UTC Summit Midstream Corp SMC · Entity 5504 Exercise / conversionCommon Stock 3,593 Not disclosed Not disclosed
Disclosure

SEC source: 0002024218-26-000008 · wk-form4_1769039708.xml · nonDerivative · entry 1

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,413

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each corporation restricted stock unit is the economic equivalent of one common stock.

Read SEC document
March 15, 2025 Filed Mar 19, 2025 00:57 UTC Summit Midstream Corp SMC · Entity 5504 Exercise / conversionCorporation Restricted Stock Units · Derivative 3,175 $0.00 $0.00
Disclosure

SEC source: 0002024218-25-000036 · wk-form4_1742345869.xml · derivative · entry 11

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,955

Underlying: Common Stock · 3,175 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each corporation restricted stock unit is the economic equivalent of one common stock.

F8 · derivative.exercise_date: 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.

F4 · derivative.expiration_date: 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.

Read SEC document
March 15, 2025 Filed Mar 19, 2025 00:57 UTC Summit Midstream Corp SMC · Entity 5504 Exercise / conversionCorporation Restricted Stock Units · Derivative 2,531 $0.00 $0.00
Disclosure

SEC source: 0002024218-25-000036 · wk-form4_1742345869.xml · derivative · entry 10

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,130

Underlying: Common Stock · 2,531 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each corporation restricted stock unit is the economic equivalent of one common stock.

F7 · derivative.exercise_date: 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.

F4 · derivative.expiration_date: 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.

Read SEC document
March 15, 2025 Filed Mar 19, 2025 00:57 UTC Summit Midstream Corp SMC · Entity 5504 Exercise / conversionCorporation Restricted Stock Units · Derivative 1,746 $0.00 $0.00
Disclosure

SEC source: 0002024218-25-000036 · wk-form4_1742345869.xml · derivative · entry 9

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,661

Underlying: Common Stock · 1,746 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each corporation restricted stock unit is the economic equivalent of one common stock.

F6 · derivative.exercise_date: 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.

F4 · derivative.expiration_date: 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.

Read SEC document
March 15, 2025 Filed Mar 19, 2025 00:57 UTC Summit Midstream Corp SMC · Entity 5504 Tax withholdingCommon Stock 774 $37.44 $28,978.56
Disclosure

SEC source: 0002024218-25-000036 · wk-form4_1742345869.xml · nonDerivative · entry 6

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,820

F2 · shares: Common stocks being withheld to pay tax liability.

Read SEC document
March 15, 2025 Filed Mar 19, 2025 00:57 UTC Summit Midstream Corp SMC · Entity 5504 Exercise / conversionCommon Stock 3,175 Not disclosed Not disclosed
Disclosure

SEC source: 0002024218-25-000036 · wk-form4_1742345869.xml · nonDerivative · entry 5

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,594

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each corporation restricted stock unit is the economic equivalent of one common stock.

Read SEC document
March 15, 2025 Filed Mar 19, 2025 00:57 UTC Summit Midstream Corp SMC · Entity 5504 Tax withholdingCommon Stock 617 $37.44 $23,100.48
Disclosure

SEC source: 0002024218-25-000036 · wk-form4_1742345869.xml · nonDerivative · entry 4

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,419

F2 · shares: Common stocks being withheld to pay tax liability.

Read SEC document
March 15, 2025 Filed Mar 19, 2025 00:57 UTC Summit Midstream Corp SMC · Entity 5504 Exercise / conversionCommon Stock 2,531 Not disclosed Not disclosed
Disclosure

SEC source: 0002024218-25-000036 · wk-form4_1742345869.xml · nonDerivative · entry 3

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,036

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each corporation restricted stock unit is the economic equivalent of one common stock.

Read SEC document
March 15, 2025 Filed Mar 19, 2025 00:57 UTC Summit Midstream Corp SMC · Entity 5504 Tax withholdingCommon Stock 426 $37.44 $15,949.44
Disclosure

SEC source: 0002024218-25-000036 · wk-form4_1742345869.xml · nonDerivative · entry 2

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,505

F2 · shares: Common stocks being withheld to pay tax liability.

Read SEC document
March 15, 2025 Filed Mar 19, 2025 00:57 UTC Summit Midstream Corp SMC · Entity 5504 Exercise / conversionCommon Stock 1,746 Not disclosed Not disclosed
Disclosure

SEC source: 0002024218-25-000036 · wk-form4_1742345869.xml · nonDerivative · entry 1

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,931

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each corporation restricted stock unit is the economic equivalent of one common stock.

Read SEC document
March 14, 2025 Filed Mar 19, 2025 00:57 UTC Summit Midstream Corp SMC · Entity 5504 GrantCorporation Restricted Stock Units · Derivative 4,531 $0.00 $0.00
Disclosure

SEC source: 0002024218-25-000036 · wk-form4_1742345869.xml · derivative · entry 8

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,407

Underlying: Common Stock · 4,531 shares

Expires not disclosed

F1 · derivative.exercise_price: Each corporation restricted stock unit is the economic equivalent of one common stock.

F5 · derivative.exercise_date: 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.

F4 · derivative.expiration_date: 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.

Read SEC document
March 14, 2025 Filed Mar 19, 2025 00:57 UTC Summit Midstream Corp SMC · Entity 5504 GrantCorporation Restricted Stock Units · Derivative 4,531 $0.00 $0.00
Disclosure

SEC source: 0002024218-25-000036 · wk-form4_1742345869.xml · derivative · entry 7

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,876

Underlying: Common Stock · 4,531 shares

Expires not disclosed

F1 · derivative.exercise_price: Each corporation restricted stock unit is the economic equivalent of one common stock.

F3 · derivative.exercise_date: 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 · derivative.expiration_date: 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.

Read SEC document
January 18, 2025 Filed Jan 22, 2025 23:22 UTC Summit Midstream Corp SMC · Entity 5504 Exercise / conversionCorporation Restricted Stock Units · Derivative 3,593 $0.00 $0.00
Disclosure

SEC source: 0002024218-25-000006 · wk-form4_1737588124.xml · derivative · entry 3

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,345

Underlying: Common Stock · 3,593 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each corporation restricted stock unit is the economic equivalent of one common stock.

F3 · derivative.exercise_date: One-third of the corporation restricted stock units subject to the original award agreement vested on January 18, 2025, with the remaining corporation restricted stock units subject to vesting on the second and third anniversaries 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 · derivative.expiration_date: 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 · balance_after: This total includes corporation restricted stock units from other tranches with different vesting dates.

Read SEC document
January 18, 2025 Filed Jan 22, 2025 23:22 UTC Summit Midstream Corp SMC · Entity 5504 Tax withholdingCommon Stock 1,066 $41.57 $44,313.62
Disclosure

SEC source: 0002024218-25-000006 · wk-form4_1737588124.xml · nonDerivative · entry 2

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,185

F2 · shares: Common stocks being withheld to pay tax liability.

Read SEC document
January 18, 2025 Filed Jan 22, 2025 23:22 UTC Summit Midstream Corp SMC · Entity 5504 Exercise / conversionCommon Stock 3,593 Not disclosed Not disclosed
Disclosure

SEC source: 0002024218-25-000006 · wk-form4_1737588124.xml · nonDerivative · entry 1

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,251

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each corporation restricted stock unit is the economic equivalent of one common stock.

Read SEC document
August 01, 2024 Filed Aug 3, 2024 01:30 UTC Summit Midstream Corp SMC · Entity 5504 GrantCorporation Restricted Stock Units · Derivative 34,938 Not disclosed Not disclosed
Disclosure

SEC source: 0002024218-24-000013 · wk-form4_1722648645.xml · derivative · entry 2

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,938

Underlying: Common Stock · 34,938 shares

Expires not disclosed

F4 · derivative.exercise_price: Pursuant to the Merger, each outstanding phantom unit award granted under the Summit Midstream Partners, LP 2012 Long-Term Incentive Plan, as amended and restated, or the Summit Midstream Partners, LP 2022 Long-Term Incentive Plan, as amended (the "Partnership Phantom Unit Awards"), have been converted into an award of restricted stock units relating to a number of shares of common stock of the Corporation (the "Corporation RSUs") equal to the number of Common Units subject to such Partnership Phantom Unit Award, as of immediately prior to the Effective Time. The Corporation RSUs will be subject to substantially the same terms and conditions as were applicable to the converted Partnership Phantom Unit Awards, including vesting and payment timing provisions, as applicable.

F1 · kind: On August 1, 2024 (the "Effective Time"), in connection with the corporate reorganization of Summit Midstream Partners, LP (the "Partnership"), the Partnership converted from a master limited partnership to a C corporation (the "Corporate Reorganization") through the merger between the Partnership and Summit SMC NewCo, LLC ("Merger Sub"), a wholly-owned subsidiary of Summit Midstream Corporation (the "Corporation"), wherein Merger Sub merged with and into the Partnership (the "Merger"), with the Partnership surviving the Merger as a wholly-owned subsidiary of the Corporation.

F2 · kind: Pursuant to Rule 12g-3(e), the Corporation is the successor issuer to the Partnership for purposes of Section 16.

F4 · price: Pursuant to the Merger, each outstanding phantom unit award granted under the Summit Midstream Partners, LP 2012 Long-Term Incentive Plan, as amended and restated, or the Summit Midstream Partners, LP 2022 Long-Term Incentive Plan, as amended (the "Partnership Phantom Unit Awards"), have been converted into an award of restricted stock units relating to a number of shares of common stock of the Corporation (the "Corporation RSUs") equal to the number of Common Units subject to such Partnership Phantom Unit Award, as of immediately prior to the Effective Time. The Corporation RSUs will be subject to substantially the same terms and conditions as were applicable to the converted Partnership Phantom Unit Awards, including vesting and payment timing provisions, as applicable.

F4 · derivative.exercise_date: Pursuant to the Merger, each outstanding phantom unit award granted under the Summit Midstream Partners, LP 2012 Long-Term Incentive Plan, as amended and restated, or the Summit Midstream Partners, LP 2022 Long-Term Incentive Plan, as amended (the "Partnership Phantom Unit Awards"), have been converted into an award of restricted stock units relating to a number of shares of common stock of the Corporation (the "Corporation RSUs") equal to the number of Common Units subject to such Partnership Phantom Unit Award, as of immediately prior to the Effective Time. The Corporation RSUs will be subject to substantially the same terms and conditions as were applicable to the converted Partnership Phantom Unit Awards, including vesting and payment timing provisions, as applicable.

F4 · derivative.expiration_date: Pursuant to the Merger, each outstanding phantom unit award granted under the Summit Midstream Partners, LP 2012 Long-Term Incentive Plan, as amended and restated, or the Summit Midstream Partners, LP 2022 Long-Term Incentive Plan, as amended (the "Partnership Phantom Unit Awards"), have been converted into an award of restricted stock units relating to a number of shares of common stock of the Corporation (the "Corporation RSUs") equal to the number of Common Units subject to such Partnership Phantom Unit Award, as of immediately prior to the Effective Time. The Corporation RSUs will be subject to substantially the same terms and conditions as were applicable to the converted Partnership Phantom Unit Awards, including vesting and payment timing provisions, as applicable.

F3 · derivative.underlying_shares: Pursuant to the Merger, immediately prior to the Effective Time, all outstanding common units representing limited partner interests in the Partnership (the "Common Units") have been converted into the right to receive shares of Common Stock, par value $0.01 per share, of the Corporation.

Read SEC document
August 01, 2024 Filed Aug 3, 2024 01:30 UTC Summit Midstream Corp SMC · Entity 5504 GrantCommon Stock 20,658 Not disclosed Not disclosed
Disclosure

SEC source: 0002024218-24-000013 · wk-form4_1722648645.xml · nonDerivative · entry 1

Sicinski Matthew B. · CIK 0001911802 · Senior VP and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,658

F1 · kind: On August 1, 2024 (the "Effective Time"), in connection with the corporate reorganization of Summit Midstream Partners, LP (the "Partnership"), the Partnership converted from a master limited partnership to a C corporation (the "Corporate Reorganization") through the merger between the Partnership and Summit SMC NewCo, LLC ("Merger Sub"), a wholly-owned subsidiary of Summit Midstream Corporation (the "Corporation"), wherein Merger Sub merged with and into the Partnership (the "Merger"), with the Partnership surviving the Merger as a wholly-owned subsidiary of the Corporation.

F2 · kind: Pursuant to Rule 12g-3(e), the Corporation is the successor issuer to the Partnership for purposes of Section 16.

F3 · shares: Pursuant to the Merger, immediately prior to the Effective Time, all outstanding common units representing limited partner interests in the Partnership (the "Common Units") have been converted into the right to receive shares of Common Stock, par value $0.01 per share, of the Corporation.

F1 · price: On August 1, 2024 (the "Effective Time"), in connection with the corporate reorganization of Summit Midstream Partners, LP (the "Partnership"), the Partnership converted from a master limited partnership to a C corporation (the "Corporate Reorganization") through the merger between the Partnership and Summit SMC NewCo, LLC ("Merger Sub"), a wholly-owned subsidiary of Summit Midstream Corporation (the "Corporation"), wherein Merger Sub merged with and into the Partnership (the "Merger"), with the Partnership surviving the Merger as a wholly-owned subsidiary of the Corporation.

Read SEC document
August 01, 2024 Filed Aug 2, 2024 21:10 UTC Summit Midstream Partners, LP SMLP · Entity 88532 Disposition to issuerPhantom Units · Derivative 34,938 $0.00 $0.00
Disclosure

SEC source: 0001549922-24-000068 · wk-form4_1722647436.xml · derivative · entry 2

Sicinski Matthew B. · CIK 0001911802 · See remarks below.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units · 34,938 shares

Expires not disclosed

F3 · derivative.exercise_price: Each phantom unit is the economic equivalent of one common unit.

F1 · kind: On August 1, 2024 (the "Effective Time"), in connection with the corporate reorganization of Summit Midstream Partners, LP (the "Partnership"), the Partnership converted from a master limited partnership to a C corporation (the "Corporate Reorganization") through the merger between the Partnership and Summit SMC NewCo, LLC ("Merger Sub"), a wholly-owned subsidiary of Summit Midstream Corporation (the "Corporation"), wherein Merger Sub merged with and into the Partnership (the "Merger"), with the Partnership surviving the Merger as a wholly-owned subsidiary of the Corporation.

F3 · kind: Each phantom unit is the economic equivalent of one common unit.

F4 · derivative.exercise_date: The phantom units and associated distribution equivalent rights do not expire. The phantom units are settled upon vesting in common units (on a one-for-one basis) or in cash, at the discretion of the Partnership.

F4 · derivative.expiration_date: The phantom units and associated distribution equivalent rights do not expire. The phantom units are settled upon vesting in common units (on a one-for-one basis) or in cash, at the discretion of the Partnership.

F2 · derivative.underlying_shares: After the Effective Time, the Reporting Person holds an aggregate 0 phantom units. This total includes phantom units from other tranches with different vesting dates.

Read SEC document
August 01, 2024 Filed Aug 2, 2024 21:10 UTC Summit Midstream Partners, LP SMLP · Entity 88532 Disposition to issuerCommon Units 20,658 $0.00 $0.00
Disclosure

SEC source: 0001549922-24-000068 · wk-form4_1722647436.xml · nonDerivative · entry 1

Sicinski Matthew B. · CIK 0001911802 · See remarks below.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F1 · kind: On August 1, 2024 (the "Effective Time"), in connection with the corporate reorganization of Summit Midstream Partners, LP (the "Partnership"), the Partnership converted from a master limited partnership to a C corporation (the "Corporate Reorganization") through the merger between the Partnership and Summit SMC NewCo, LLC ("Merger Sub"), a wholly-owned subsidiary of Summit Midstream Corporation (the "Corporation"), wherein Merger Sub merged with and into the Partnership (the "Merger"), with the Partnership surviving the Merger as a wholly-owned subsidiary of the Corporation.

F2 · shares: After the Effective Time, the Reporting Person holds an aggregate 0 phantom units. This total includes phantom units from other tranches with different vesting dates.

Read SEC document
March 15, 2024 Filed Mar 19, 2024 20:11 UTC Summit Midstream Partners, LP SMLP · Entity 88532 Exercise / conversionPhantom Units · Derivative 3,175 $0.00 $0.00
Disclosure

SEC source: 0001549922-24-000032 · wk-form4_1710893467.xml · derivative · entry 15

Sicinski Matthew B. · CIK 0001911802 · See remarks below.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,174

Underlying: Common Units · 3,175 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each phantom unit is the economic equivalent of one common unit.

F9 · derivative.exercise_date: One-half of the phantom units (rounded down to the nearest whole number of units, except in the case of the final vesting date) vested on March 15, 2024, and the remaining phantom units shall vest if and to the extent that the phantom units are earned during the performance period from January 1, 2023 through December 31, 2025, which will depend on whether the performance criteria are achieved as determined by the committee as soon as reasonably practicable, but no later than Friday, March 6, 2026. The vesting of the phantom units is subject to continued employment and accelerated vesting as provided in the applicable award agreement. The Reporting Person will receive DERs for each phantom 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 phantom units.

F5 · derivative.expiration_date: The phantom units and associated DERs do not expire. The phantom units are settled upon vesting in common units (on a one-for-one basis) or in cash, at the discretion of the Issuer.

F10 · balance_after: After giving effect to the transactions reported in this Report, the Reporting Person holds an aggregate 34,938 phantom units. This total includes phantom units from other tranches with different vesting dates.

Read SEC document
March 15, 2024 Filed Mar 19, 2024 20:11 UTC Summit Midstream Partners, LP SMLP · Entity 88532 Exercise / conversionPhantom Units · Derivative 2,023 $0.00 $0.00
Disclosure

SEC source: 0001549922-24-000032 · wk-form4_1710893467.xml · derivative · entry 14

Sicinski Matthew B. · CIK 0001911802 · See remarks below.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units · 2,023 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each phantom unit is the economic equivalent of one common unit.

F8 · derivative.exercise_date: The phantom units (rounded down to the nearest whole number of units, except in the case of the final vesting date) vested on March 15, 2024, subject to continued employment and accelerated vesting as provided in the applicable award agreement. The Reporting Person will receive DERs for each phantom 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 phantom units.

F5 · derivative.expiration_date: The phantom units and associated DERs do not expire. The phantom units are settled upon vesting in common units (on a one-for-one basis) or in cash, at the discretion of the Issuer.

Read SEC document
March 15, 2024 Filed Mar 19, 2024 20:11 UTC Summit Midstream Partners, LP SMLP · Entity 88532 Exercise / conversionPhantom Units · Derivative 7,593 $0.00 $0.00
Disclosure

SEC source: 0001549922-24-000032 · wk-form4_1710893467.xml · derivative · entry 13

Sicinski Matthew B. · CIK 0001911802 · See remarks below.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,531

Underlying: Common Units · 7,593 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each phantom unit is the economic equivalent of one common unit.

F7 · derivative.exercise_date: Seventy-five percent of the phantom units (rounded down to the nearest whole number of units, except in the case of the final vesting date) vested on March 15, 2024 and twenty-five percent of the phantom units shall vest on March 15, 2025, subject to continued employment and accelerated vesting as provided in the applicable award agreement. The Reporting Person will receive DERs for each phantom 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 phantom units.

F5 · derivative.expiration_date: The phantom units and associated DERs do not expire. The phantom units are settled upon vesting in common units (on a one-for-one basis) or in cash, at the discretion of the Issuer.

Read SEC document
March 15, 2024 Filed Mar 19, 2024 20:11 UTC Summit Midstream Partners, LP SMLP · Entity 88532 Exercise / conversionPhantom Units · Derivative 1,747 $0.00 $0.00
Disclosure

SEC source: 0001549922-24-000032 · wk-form4_1710893467.xml · derivative · entry 12

Sicinski Matthew B. · CIK 0001911802 · See remarks below.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,746

Underlying: Common Units · 1,747 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each phantom unit is the economic equivalent of one common unit.

F6 · derivative.exercise_date: One-third of the phantom units subject to the original award agreement vested on March 15, 2024, with the final one-third of the phantom units subject to vesting on the third anniversary of the March 15, 2022 reference date, subject to continued employment. The Reporting Person received DERs for each phantom 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 phantom units.

F5 · derivative.expiration_date: The phantom units and associated DERs do not expire. The phantom units are settled upon vesting in common units (on a one-for-one basis) or in cash, at the discretion of the Issuer.

Read SEC document
March 15, 2024 Filed Mar 19, 2024 20:11 UTC Summit Midstream Partners, LP SMLP · Entity 88532 Exercise / conversionPhantom Units · Derivative 866 $0.00 $0.00
Disclosure

SEC source: 0001549922-24-000032 · wk-form4_1710893467.xml · derivative · entry 11

Sicinski Matthew B. · CIK 0001911802 · See remarks below.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units · 866 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each phantom unit is the economic equivalent of one common unit.

F4 · derivative.exercise_date: The final one-third of the phantom units subject to the original award agreement vested on March 15, 2024, the third anniversary of the March 15, 2021 reference date. The Reporting Person received distribution equivalent rights ("DERs") for each phantom 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 phantom units.

F5 · derivative.expiration_date: The phantom units and associated DERs do not expire. The phantom units are settled upon vesting in common units (on a one-for-one basis) or in cash, at the discretion of the Issuer.

Read SEC document
March 15, 2024 Filed Mar 19, 2024 20:11 UTC Summit Midstream Partners, LP SMLP · Entity 88532 Tax withholdingCommon Units 774 $18.45 $14,280.30
Disclosure

SEC source: 0001549922-24-000032 · wk-form4_1710893467.xml · nonDerivative · entry 10

Sicinski Matthew B. · CIK 0001911802 · See remarks below.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,658

F3 · shares: Common units being withheld to pay tax liability.

Read SEC document
March 15, 2024 Filed Mar 19, 2024 20:11 UTC Summit Midstream Partners, LP SMLP · Entity 88532 Exercise / conversionCommon Units 3,175 Not disclosed Not disclosed
Disclosure

SEC source: 0001549922-24-000032 · wk-form4_1710893467.xml · nonDerivative · entry 9

Sicinski Matthew B. · CIK 0001911802 · See remarks below.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,432

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each phantom unit is the economic equivalent of one common unit.

Read SEC document
March 15, 2024 Filed Mar 19, 2024 20:11 UTC Summit Midstream Partners, LP SMLP · Entity 88532 Tax withholdingCommon Units 493 $18.45 $9,095.85
Disclosure

SEC source: 0001549922-24-000032 · wk-form4_1710893467.xml · nonDerivative · entry 8

Sicinski Matthew B. · CIK 0001911802 · See remarks below.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,257

F3 · shares: Common units being withheld to pay tax liability.

Read SEC document
March 15, 2024 Filed Mar 19, 2024 20:11 UTC Summit Midstream Partners, LP SMLP · Entity 88532 Exercise / conversionCommon Units 2,023 Not disclosed Not disclosed
Disclosure

SEC source: 0001549922-24-000032 · wk-form4_1710893467.xml · nonDerivative · entry 7

Sicinski Matthew B. · CIK 0001911802 · See remarks below.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,750

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each phantom unit is the economic equivalent of one common unit.

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March 15, 2024 Filed Mar 19, 2024 20:11 UTC Summit Midstream Partners, LP SMLP · Entity 88532 Tax withholdingCommon Units 1,989 $18.45 $36,697.05
Disclosure

SEC source: 0001549922-24-000032 · wk-form4_1710893467.xml · nonDerivative · entry 6

Sicinski Matthew B. · CIK 0001911802 · See remarks below.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,727

F3 · shares: Common units being withheld to pay tax liability.

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March 15, 2024 Filed Mar 19, 2024 20:11 UTC Summit Midstream Partners, LP SMLP · Entity 88532 Exercise / conversionCommon Units 7,593 Not disclosed Not disclosed
Disclosure

SEC source: 0001549922-24-000032 · wk-form4_1710893467.xml · nonDerivative · entry 5

Sicinski Matthew B. · CIK 0001911802 · See remarks below.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,716

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each phantom unit is the economic equivalent of one common unit.

Read SEC document
March 15, 2024 Filed Mar 19, 2024 20:11 UTC Summit Midstream Partners, LP SMLP · Entity 88532 Tax withholdingCommon Units 518 $18.45 $9,557.10
Disclosure

SEC source: 0001549922-24-000032 · wk-form4_1710893467.xml · nonDerivative · entry 4

Sicinski Matthew B. · CIK 0001911802 · See remarks below.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,123

F3 · shares: Common units being withheld to pay tax liability.

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March 15, 2024 Filed Mar 19, 2024 20:11 UTC Summit Midstream Partners, LP SMLP · Entity 88532 Exercise / conversionCommon Units 1,747 Not disclosed Not disclosed
Disclosure

SEC source: 0001549922-24-000032 · wk-form4_1710893467.xml · nonDerivative · entry 3

Sicinski Matthew B. · CIK 0001911802 · See remarks below.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,641

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each phantom unit is the economic equivalent of one common unit.

Read SEC document
March 15, 2024 Filed Mar 19, 2024 20:11 UTC Summit Midstream Partners, LP SMLP · Entity 88532 Tax withholdingCommon Units 257 $18.45 $4,741.65
Disclosure

SEC source: 0001549922-24-000032 · wk-form4_1710893467.xml · nonDerivative · entry 2

Sicinski Matthew B. · CIK 0001911802 · See remarks below.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,894

F3 · shares: Common units being withheld to pay tax liability.

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March 15, 2024 Filed Mar 19, 2024 20:11 UTC Summit Midstream Partners, LP SMLP · Entity 88532 Exercise / conversionCommon Units 866 Not disclosed Not disclosed
Disclosure

SEC source: 0001549922-24-000032 · wk-form4_1710893467.xml · nonDerivative · entry 1

Sicinski Matthew B. · CIK 0001911802 · See remarks below.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,151

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each phantom unit is the economic equivalent of one common unit.

F2 · balance_after: On November 9, 2020, the Issuer effected a 1-for-15 reverse unit split (the "Reverse Unit Split"). Pursuant to the Reverse Unit Split, common unitholders received one common unit for every 15 common units owned at the close of business on November 9, 2020. All fractional units created by the Reverse Unit Split were rounded to the nearest whole unit. The common units began trading on a split-adjusted basis on November 10, 2020. After giving effect to the Reverse Unit Split, the number of issued and outstanding common units decreased to 3,774,992.

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January 18, 2024 Filed Jan 22, 2024 08:50 UTC Summit Midstream Partners, LP SMLP · Entity 88532 GrantPhantom Units · Derivative 7,185 $0.00 $0.00
Disclosure

SEC source: 0001549922-24-000018 · wk-form4_1705931391.xml · derivative · entry 2

Sicinski Matthew B. · CIK 0001911802 · See remarks below.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,185

Underlying: Common Units · 7,185 shares

Expires not disclosed

F1 · derivative.exercise_price: Each phantom unit is the economic equivalent of one common unit.

F4 · derivative.exercise_date: The phantom units shall vest if and to the extent that the phantom units are earned during the performance period from January 1, 2024 through December 31, 2026, which will depend on whether the performance criteria are achieved as determined by the committee as soon as reasonably practicable, but no later than Friday, March 6, 2027. The vesting of the phantom units is subject to continued employment and accelerated vesting as provided in the applicable award agreement. The Reporting Person will receive DERs for each phantom 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 phantom units.

F3 · derivative.expiration_date: The phantom units and associated DERs do not expire. The phantom units are settled upon vesting in common units (on a one-for-one basis) or in cash, at the discretion of the Issuer.

F5 · balance_after: After giving effect to the transactions reported in this Report, the Reporting Person holds an aggregate 50,342 phantom units. This total includes phantom units from other tranches with different vesting dates.

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January 18, 2024 Filed Jan 22, 2024 08:50 UTC Summit Midstream Partners, LP SMLP · Entity 88532 GrantPhantom Units · Derivative 10,778 $0.00 $0.00
Disclosure

SEC source: 0001549922-24-000018 · wk-form4_1705931391.xml · derivative · entry 1

Sicinski Matthew B. · CIK 0001911802 · See remarks below.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,778

Underlying: Common Units · 10,778 shares

Expires not disclosed

F1 · derivative.exercise_price: Each phantom unit is the economic equivalent of one common unit.

F2 · derivative.exercise_date: One-third of the phantom 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 January 18, 2024 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 phantom 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 phantom units.

F3 · derivative.expiration_date: The phantom units and associated DERs do not expire. The phantom units are settled upon vesting in common units (on a one-for-one basis) or in cash, at the discretion of the Issuer.

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March 15, 2023 Filed Mar 17, 2023 20:43 UTC Summit Midstream Partners, LP SMLP · Entity 88532 Exercise / conversionPhantom Units · Derivative 1,747 $0.00 $0.00
Disclosure

SEC source: 0001209191-23-019934 · doc4.xml · derivative · entry 11

Sicinski Matthew B. · CIK 0001911802 · See remarks below.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,493

Underlying: Common Units · 1,747 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each phantom unit is the economic equivalent of one common unit.

F9 · derivative.exercise_date: One-third of the phantom units subject to the original award agreement vested on March 15, 2023, with the remaining phantom units subject to vesting on the second and third anniversaries of the March 15, 2022 reference date, subject to continued employment. The Reporting Person received DERs for each phantom 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 phantom units.

F5 · derivative.expiration_date: The phantom units and associated DERs do not expire. The phantom units are settled upon vesting in common units (on a one-for-one basis) or in cash, at the discretion of the Issuer.

F10 · balance_after: After giving effect to the transactions reported in this Report, the Reporting Person holds an aggregate 32,379 phantom units. This total includes phantom units from other tranches with different vesting dates.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.