SMC

SEC source: 0002024218-25-000008 · wk-form4_1737588391.xml · derivative · entry 3

Mault William J. · CIK 0001911803 · Executive VP and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 87,807

Underlying: Common Stock · 10,122 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.

SEC source: 0002024218-25-000008 · wk-form4_1737588391.xml · nonDerivative · entry 2

Mault William J. · CIK 0001911803 · Executive VP and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,756

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

SEC source: 0002024218-25-000008 · wk-form4_1737588391.xml · nonDerivative · entry 1

Mault William J. · CIK 0001911803 · Executive VP and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,404

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.

SEC source: 0002024218-25-000007 · wk-form4_1737588259.xml · derivative · entry 3

Johnston James David · CIK 0001823482 · Executive VP, GC, CCO and Secy

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 91,950

Underlying: Common Stock · 10,795 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.

SEC source: 0002024218-25-000007 · wk-form4_1737588259.xml · nonDerivative · entry 2

Johnston James David · CIK 0001823482 · Executive VP, GC, CCO and Secy

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,185

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

SEC source: 0002024218-25-000007 · wk-form4_1737588259.xml · nonDerivative · entry 1

Johnston James David · CIK 0001823482 · Executive VP, GC, CCO and Secy

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,996

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.

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.

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.

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.

SEC source: 0002024218-25-000005 · wk-form4_1737587966.xml · derivative · entry 6

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 295,004

Underlying: Common Stock · 32,755 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.

F3 · 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 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.

F8 · 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.

SEC source: 0002024218-25-000005 · wk-form4_1737587966.xml · nonDerivative · entry 3

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 269,326

F4 · shares: Common stocks being withheld to pay tax liability.

SEC source: 0002024218-25-000005 · wk-form4_1737587966.xml · nonDerivative · entry 2

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 278,761

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.

F3 · price: Each corporation restricted stock unit is the economic equivalent of one common stock.

SEC source: 0002024218-25-000005 · wk-form4_1737587966.xml · nonDerivative · entry 1

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 246,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F2 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $38.48 to $41.95, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 2 to this Form 4.

SEC source: 0002024218-25-000004 · wk-form4_1737068750.xml · nonDerivative · entry 3

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 247,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F4 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $37.85 to $38.38, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 4 to this Form 4.

SEC source: 0002024218-25-000004 · wk-form4_1737068750.xml · nonDerivative · entry 2

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 248,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F3 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $37.87 to $38.01, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 3 to this Form 4.

SEC source: 0002024218-25-000004 · wk-form4_1737068750.xml · nonDerivative · entry 1

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 249,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F2 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $37.27 to $38.03, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 2 to this Form 4.

SEC source: 0002024218-25-000003 · wk-form4_1736820272.xml · nonDerivative · entry 3

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 250,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F4 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $37.46 to $37.88, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 4 to this Form 4.

SEC source: 0002024218-25-000003 · wk-form4_1736820272.xml · nonDerivative · entry 2

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 251,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F3 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $37.16 to $37.89, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 3 to this Form 4.

SEC source: 0002024218-25-000003 · wk-form4_1736820272.xml · nonDerivative · entry 1

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 252,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F2 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $37.20 to $37.80, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 2 to this Form 4.

SEC source: 0002024218-25-000002 · wk-form4_1736293844.xml · nonDerivative · entry 3

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 253,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F4 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $37.23 to $37.92, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 4 to this Form 4.

SEC source: 0002024218-25-000002 · wk-form4_1736293844.xml · nonDerivative · entry 2

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 254,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F3 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $37.51 to $37.99, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 3 to this Form 4.

SEC source: 0002024218-25-000002 · wk-form4_1736293844.xml · nonDerivative · entry 1

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 255,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F2 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $37.81 to $38.02, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 2 to this Form 4.

SEC source: 0002024218-25-000001 · wk-form4_1735857137.xml · nonDerivative · entry 3

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 256,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F4 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $37.02 to $38.00, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 4 to this Form 4.

SEC source: 0002024218-25-000001 · wk-form4_1735857137.xml · nonDerivative · entry 2

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 257,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F3 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $37.05 to $37.87, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 3 to this Form 4.

SEC source: 0002024218-25-000001 · wk-form4_1735857137.xml · nonDerivative · entry 1

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 258,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F2 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $36.21 to $36.70, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 2 to this Form 4.

SEC source: 0002024218-24-000061 · wk-form4_1735344593.xml · nonDerivative · entry 3

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 259,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F4 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $36.11 to $36.57, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 4 to this Form 4.

SEC source: 0002024218-24-000061 · wk-form4_1735344593.xml · nonDerivative · entry 2

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 260,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F3 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $35.41 to $36.48, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 3 to this Form 4.

SEC source: 0002024218-24-000061 · wk-form4_1735344593.xml · nonDerivative · entry 1

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 261,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F2 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $34.95 to $35.62, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 2 to this Form 4.

SEC source: 0002024218-24-000060 · wk-form4_1735003823.xml · nonDerivative · entry 3

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 262,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F4 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $34.75 to $35.13, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 4 to this Form 4.

SEC source: 0002024218-24-000060 · wk-form4_1735003823.xml · nonDerivative · entry 2

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 263,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F3 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $34.79 to $35.33, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 3 to this Form 4.

SEC source: 0002024218-24-000060 · wk-form4_1735003823.xml · nonDerivative · entry 1

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 264,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F2 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $34.47 to $35.14, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 2 to this Form 4.

SEC source: 0002024218-24-000059 · wk-form4_1734569768.xml · nonDerivative · entry 3

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 265,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F4 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $34.64 to $35.49, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 4 to this Form 4.

SEC source: 0002024218-24-000059 · wk-form4_1734569768.xml · nonDerivative · entry 2

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 266,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F3 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $34.63 to $35.41, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 3 to this Form 4.

SEC source: 0002024218-24-000059 · wk-form4_1734569768.xml · nonDerivative · entry 1

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 267,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F2 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $34.95 to $35.44, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 2 to this Form 4.

SEC source: 0002024218-24-000058 · wk-form4_1734142207.xml · nonDerivative · entry 3

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 268,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F4 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $35.34 to $36.30, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 4 to this Form 4.

SEC source: 0002024218-24-000058 · wk-form4_1734142207.xml · nonDerivative · entry 2

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 269,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F3 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $36.00 to $36.42, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 3 to this Form 4.

SEC source: 0002024218-24-000057 · wk-form4_1734140477.xml · nonDerivative · entry 1

Johnston James David · CIK 0001823482 · Executive VP, GC, CCO and Secy

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 28,201

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F2 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $35.88 to $36.65, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 2 to this Form 4.

SEC source: 0002024218-24-000058 · wk-form4_1734142207.xml · nonDerivative · entry 1

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 270,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F2 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $36.60 to $38.00, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 2 to this Form 4.

SEC source: 0002024218-24-000048 · wk-form4_1733875195.xml · nonDerivative · entry 3

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 271,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F4 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $36.70 to $37.99, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 4 to this Form 4.

SEC source: 0002024218-24-000048 · wk-form4_1733875195.xml · nonDerivative · entry 2

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 272,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F3 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $36.50 to $37.85, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 3 to this Form 4.

SEC source: 0002024218-24-000048 · wk-form4_1733875195.xml · nonDerivative · entry 1

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 273,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F2 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $37.29 to $38.00, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 2 to this Form 4.

SEC source: 0002024218-24-000047 · wk-form4_1733534186.xml · nonDerivative · entry 2

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 274,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F3 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $37.28 to $38.00, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 3 to this Form 4.

SEC source: 0002024218-24-000047 · wk-form4_1733534186.xml · nonDerivative · entry 1

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 275,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F2 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $37.01 to $38.00, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 2 to this Form 4.

SEC source: 0002024218-24-000042 · wk-form4_1733272322.xml · nonDerivative · entry 3

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 276,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F3 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $37.70 to $38.00, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 3 to this Form 4.

SEC source: 0002024218-24-000042 · wk-form4_1733272322.xml · nonDerivative · entry 2

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 277,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F2 · price: The price reported in Column 4 is a weighted average price and has been rounded to the nearest cent. These Common Stocks were sold in multiple transactions at prices ranging from $37.62 to $38.00, inclusive. The reporting person undertakes to provide to Summit Midstream Corporation, any security holder of Summit Midstream Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Stocks sold at each separate price within the ranges set forth in footnote 2 to this Form 4.

SEC source: 0002024218-24-000042 · wk-form4_1733272322.xml · nonDerivative · entry 1

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 278,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

SEC source: 0002024218-24-000038 · wk-form4_1732744432.xml · nonDerivative · entry 3

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 279,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

SEC source: 0002024218-24-000038 · wk-form4_1732744432.xml · nonDerivative · entry 2

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 280,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

SEC source: 0002024218-24-000038 · wk-form4_1732744432.xml · nonDerivative · entry 1

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 281,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

SEC source: 0002024218-24-000037 · wk-form4_1732316473.xml · nonDerivative · entry 3

Deneke J Heath · CIK 0001555671 · Chairman, President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 282,006

F1 · kind: These Common Stocks were sold in compliance with a qualified selling plan adopted by the reporting person pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.