PAA

SEC source: 0001070423-26-000050 · form4.xml · derivative · entry 1

McGee Richard K. · CIK 0001490023 · EVP, General Counsel & Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 294,607

Underlying: Common Units · 120,000 shares

Expires not disclosed

F1 · kind: On September 30, 2026, Reporting Person made a gift of 30,000 Class A Units of Plains AAP, L.P. ("AAP") and Class B shares of Plains GP Holdings, L.P. ("PAGP") to each of his four children, for a total gift of 120,000 units.

F2 · derivative.exercise_date: Pursuant to the limited partnership agreement of AAP, the Class A Units of AAP, together with a like number of Class B Shares of PAGP, may be redeemed for common units of Plains All American Pipeline, L.P. on a one-for-one basis with the approval of the Reporting Person.

F2 · derivative.expiration_date: Pursuant to the limited partnership agreement of AAP, the Class A Units of AAP, together with a like number of Class B Shares of PAGP, may be redeemed for common units of Plains All American Pipeline, L.P. on a one-for-one basis with the approval of the Reporting Person.

SEC source: 0001070423-26-000048 · form4.xml · derivative · entry 1

RAYMOND JOHN T · CIK 0001186173 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Through Entity

Disclosed balance after: 0

Underlying: Common Units · 20,376,259 shares

Expires 2026-09-14

F1 · derivative.exercise_price: Prior to their redemption by the Issuer on September 14, 2026, the Series A Convertible Preferred Units (the "Preferred Units") were convertible on a one-for-one basis by the holders of such Preferred Units or by the Issuer.

F2 · kind: In accordance with the terms of the Seventh Amended and Restated Agreement of Limited Partnership of the Issuer, dated as of October 10, 2017, the reported securities were redeemed by the Issuer on September 14, 2026 at a price equal to 110% of their face value of $26.25 ($28.875) per Preferred Unit, plus accrued and unpaid distributions to, but not including, the redemption date.

F1 · derivative.exercise_date: Prior to their redemption by the Issuer on September 14, 2026, the Series A Convertible Preferred Units (the "Preferred Units") were convertible on a one-for-one basis by the holders of such Preferred Units or by the Issuer.

F3 · ownership.nature: Prior to their redemption by the Issuer on September 14, 2026, the Series A Convertible Preferred Units were held by EMG Fund IV PAA Holdings, LLC ("EMG"). The Reporting Person is the sole member of EMG Fund IV Management, LLC, the general partner of EMG Fund IV Management, LP, which is the manager of EMG, and therefore he may be deemed to be the beneficial owner of the interests held by EMG.

SEC source: 0001070423-26-000044 · form4.xml · derivative · entry 5

Herbold Chris · CIK 0001497929 · Sr. VP Finance & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units · 40,609 shares

Expires 2026-08-14

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 · security: Phantom Units granted under Long-Term Incentive Plan (includes distribution equivalent rights payable in cash).

F2 · derivative.exercise_price: One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

SEC source: 0001070423-26-000044 · form4.xml · derivative · entry 4

Herbold Chris · CIK 0001497929 · Sr. VP Finance & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units · 100,000 shares

Expires 2026-08-14

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 · security: Phantom Units granted under Long-Term Incentive Plan (includes distribution equivalent rights payable in cash).

F2 · derivative.exercise_price: One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

SEC source: 0001070423-26-000044 · form4.xml · nonDerivative · entry 3

Herbold Chris · CIK 0001497929 · Sr. VP Finance & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 327,441

SEC source: 0001070423-26-000044 · form4.xml · nonDerivative · entry 2

Herbold Chris · CIK 0001497929 · Sr. VP Finance & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 381,682

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.

SEC source: 0001070423-26-000044 · form4.xml · nonDerivative · entry 1

Herbold Chris · CIK 0001497929 · Sr. VP Finance & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 341,073

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.

SEC source: 0001070423-26-000042 · form4.xml · derivative · entry 3

Swanson Al · CIK 0001292270 · EVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units · 109,165 shares

Expires 2026-08-14

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 · security: Phantom Units granted under Long-Term Incentive Plan (includes distribution equivalent rights payable in cash).

F2 · derivative.exercise_price: One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

SEC source: 0001070423-26-000042 · form4.xml · nonDerivative · entry 2

Swanson Al · CIK 0001292270 · EVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 668,109

SEC source: 0001070423-26-000042 · form4.xml · nonDerivative · entry 1

Swanson Al · CIK 0001292270 · EVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 711,066

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.

SEC source: 0001070423-26-000040 · form4.xml · derivative · entry 3

McGee Richard K. · CIK 0001490023 · EVP, General Counsel & Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units · 109,165 shares

Expires 2026-08-14

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 · security: Phantom Units granted under Long-Term Incentive Plan (includes distribution equivalent rights payable in cash).

F2 · derivative.exercise_price: One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

SEC source: 0001070423-26-000040 · form4.xml · nonDerivative · entry 2

McGee Richard K. · CIK 0001490023 · EVP, General Counsel & Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 672,561

SEC source: 0001070423-26-000040 · form4.xml · nonDerivative · entry 1

McGee Richard K. · CIK 0001490023 · EVP, General Counsel & Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 715,518

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.

SEC source: 0001070423-26-000037 · form4.xml · derivative · entry 7

Goebel Jeremy L. · CIK 0001769336 · EVP & CCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units · 140,691 shares

Expires 2026-08-14

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 · security: Phantom Units granted under Long-Term Incentive Plan (includes distribution equivalent rights payable in cash).

F2 · derivative.exercise_price: One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

SEC source: 0001070423-26-000037 · form4.xml · derivative · entry 6

Goebel Jeremy L. · CIK 0001769336 · EVP & CCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units · 500,000 shares

Expires 2026-08-14

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 · security: Phantom Units granted under Long-Term Incentive Plan (includes distribution equivalent rights payable in cash).

F2 · derivative.exercise_price: One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

SEC source: 0001070423-26-000037 · form4.xml · nonDerivative · entry 5

Goebel Jeremy L. · CIK 0001769336 · EVP & CCO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Family Limited Partnership

Disclosed balance after: 907,515

SEC source: 0001070423-26-000037 · form4.xml · nonDerivative · entry 4

Goebel Jeremy L. · CIK 0001769336 · EVP & CCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

SEC source: 0001070423-26-000037 · form4.xml · nonDerivative · entry 3

Goebel Jeremy L. · CIK 0001769336 · EVP & CCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 388,579

SEC source: 0001070423-26-000037 · form4.xml · nonDerivative · entry 2

Goebel Jeremy L. · CIK 0001769336 · EVP & CCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 640,691

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.

SEC source: 0001070423-26-000037 · form4.xml · nonDerivative · entry 1

Goebel Jeremy L. · CIK 0001769336 · EVP & CCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 500,000

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.

SEC source: 0001070423-26-000035 · form4.xml · derivative · entry 5

Chandler Chris R. · CIK 0001769245 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units · 140,691 shares

Expires 2026-08-14

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 · security: Phantom Units granted under Long-Term Incentive Plan (includes distribution equivalent rights payable in cash).

F2 · derivative.exercise_price: One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

SEC source: 0001070423-26-000035 · form4.xml · derivative · entry 4

Chandler Chris R. · CIK 0001769245 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units · 500,000 shares

Expires 2026-08-14

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 · security: Phantom Units granted under Long-Term Incentive Plan (includes distribution equivalent rights payable in cash).

F2 · derivative.exercise_price: One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

SEC source: 0001070423-26-000035 · form4.xml · nonDerivative · entry 3

Chandler Chris R. · CIK 0001769245 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 882,483

SEC source: 0001070423-26-000035 · form4.xml · nonDerivative · entry 2

Chandler Chris R. · CIK 0001769245 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,134,595

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.

SEC source: 0001070423-26-000035 · form4.xml · nonDerivative · entry 1

Chandler Chris R. · CIK 0001769245 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 993,904

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.

SEC source: 0001070423-26-000033 · form4.xml · derivative · entry 3

Chiang Willie CW · CIK 0001421559 · Director · Chairman & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units · 346,357 shares

Expires 2026-08-14

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 · security: Phantom Units granted under Long-Term Incentive Plan (includes distribution equivalent rights ("DER") payable in cash).

F2 · derivative.exercise_price: One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

SEC source: 0001070423-26-000033 · form4.xml · nonDerivative · entry 2

Chiang Willie CW · CIK 0001421559 · Director · Chairman & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,396,856

SEC source: 0001070423-26-000033 · form4.xml · nonDerivative · entry 1

Chiang Willie CW · CIK 0001421559 · Director · Chairman & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,533,148

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.

SEC source: 0001581990-26-000045 · form4.xml · nonDerivative · entry 1

PAA GP Holdings LLC · CIK 0001581928 · Director · 10% owner

Plains AAP, L.P. · CIK 0001490401 · Director · 10% owner

Plains All American GP LLC · CIK 0001490402 · Director · 10% owner

PLAINS GP HOLDINGS LP · CIK 0001581990 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Plains AAP, L.P.

Disclosed balance after: 233,059,630

F1 · kind: Pursuant to that certain Omnibus Agreement (the "Omnibus Agreement") dated November 15, 2016, by and among PAA GP Holdings LLC ("PAGP GP"), Plains GP Holdings, L.P. ("PAGP"), Plains All American GP LLC ("GP LLC"), Plains AAP, L.P. ("AAP"), PAA GP LLC and Plains All American Pipeline, L.P. ("PAA"), AAP is obligated to issue to PAGP a number of AAP Class A units equal to the number of PAGP Class A shares issued upon vesting of awards under PAGP's long-term incentive plan. The Omnibus Agreement also provides that immediately following such issuance, PAA is obligated to issue to AAP an equivalent number of PAA Common Units. On August 14, 2026, a total of 59,200 PAGP Class A shares were issued in connection with the vesting of outstanding LTIP awards under PAGP's long-term incentive plan. An equal number of AAP Class A units was issued to PAGP and an equal number of PAA Common Units was issued to AAP.

F1 · price: Pursuant to that certain Omnibus Agreement (the "Omnibus Agreement") dated November 15, 2016, by and among PAA GP Holdings LLC ("PAGP GP"), Plains GP Holdings, L.P. ("PAGP"), Plains All American GP LLC ("GP LLC"), Plains AAP, L.P. ("AAP"), PAA GP LLC and Plains All American Pipeline, L.P. ("PAA"), AAP is obligated to issue to PAGP a number of AAP Class A units equal to the number of PAGP Class A shares issued upon vesting of awards under PAGP's long-term incentive plan. The Omnibus Agreement also provides that immediately following such issuance, PAA is obligated to issue to AAP an equivalent number of PAA Common Units. On August 14, 2026, a total of 59,200 PAGP Class A shares were issued in connection with the vesting of outstanding LTIP awards under PAGP's long-term incentive plan. An equal number of AAP Class A units was issued to PAGP and an equal number of PAA Common Units was issued to AAP.

F2 · ownership.nature: PAGP GP is the general partner of PAGP, which is the managing member of GP LLC, which is the general partner of AAP. Each of PAGP GP, PAGP and GP LLC may be deemed to indirectly beneficially own the Common Units directly held by AAP, but disclaim beneficial ownership of such Common Units except to the extent of their respective pecuniary interests therein.

SEC source: 0001070423-26-000042 · form4.xml · derivative · entry 4

Swanson Al · CIK 0001292270 · EVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 85,600

Underlying: Common Units · 85,600 shares

Expires not disclosed

F1 · security: Phantom Units granted under Long-Term Incentive Plan (includes distribution equivalent rights payable in cash).

F2 · derivative.exercise_price: One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

F3 · derivative.exercise_date: These phantom units will vest as follows: (a) Tranche 1, consisting of 42,800 phantom units, will vest on the August 2029 distribution date assuming continued service through such date; (b) Tranche 2, consisting of 21,400 phantom units (assuming 100% payout at target), will potentially vest on the August 2029 distribution date at a scaled payout range of between 0% to 200% based on PAA's total shareholder return (TSR) over the three-year period ending June 30, 2029 compared to the TSR of a selected peer group (payout based on numeric rank with 100% earned at median and interpolation between ranks, and with payout being subject to reduction by up to 25 basis points, but not below 100%, if actual TSR is negative); and

F4 · derivative.exercise_date: (c) Tranche 3, consisting of 21,400 phantom units (assuming 100% payout at target), will potentially vest on the Aug. 2029 distribution date at a scaled payout range of between 0% and 200% based on PAA achieving cumul. distributable cash flow (DCF) per common unit equivalent (CUE) of $9.10 over the 3-year period ending 6/30/29 (with payout equaling 100% at cumul. DCF/CUE over such period of $9.10 and being equal to 0% for cumul. DCF/CUE over such period of $8.19 or lower and 200% for cumul. DCF/CUE over such period of $10.01 or higher), with interpolation btw. such points, and with payout being subject to reduction by 25 basis pts. if PAA's leverage ratio (long term debt to adj. EBITDA as calculated pursuant to PAA's sr. unsecured revolving credit facility) as of 6/30/29 is greater than the leverage ratio that equals the upper end of our then applicable non-rating agency target leverage ratio range.

F5 · derivative.exercise_date: DERs associated with Tranche 1 will accrue for the first year and be paid in cash in a lump sum on the August 2029 distribution date; beginning in November 2027, DERs associated with Tranche 1 will be paid quarterly until the phantom units vest or terminate. DERs associated with Tranches 2 and 3 will accrue during the three-year vesting period and be paid in cash in a lump sum on the August 2029 distribution date with respect to each phantom unit that vests, if any, on such date. Any Tranche 2 or Tranche 3 phantom units that are determined to not have vested as of the August 2029 distribution date shall expire as of such date.

F3 · derivative.expiration_date: These phantom units will vest as follows: (a) Tranche 1, consisting of 42,800 phantom units, will vest on the August 2029 distribution date assuming continued service through such date; (b) Tranche 2, consisting of 21,400 phantom units (assuming 100% payout at target), will potentially vest on the August 2029 distribution date at a scaled payout range of between 0% to 200% based on PAA's total shareholder return (TSR) over the three-year period ending June 30, 2029 compared to the TSR of a selected peer group (payout based on numeric rank with 100% earned at median and interpolation between ranks, and with payout being subject to reduction by up to 25 basis points, but not below 100%, if actual TSR is negative); and

F4 · derivative.expiration_date: (c) Tranche 3, consisting of 21,400 phantom units (assuming 100% payout at target), will potentially vest on the Aug. 2029 distribution date at a scaled payout range of between 0% and 200% based on PAA achieving cumul. distributable cash flow (DCF) per common unit equivalent (CUE) of $9.10 over the 3-year period ending 6/30/29 (with payout equaling 100% at cumul. DCF/CUE over such period of $9.10 and being equal to 0% for cumul. DCF/CUE over such period of $8.19 or lower and 200% for cumul. DCF/CUE over such period of $10.01 or higher), with interpolation btw. such points, and with payout being subject to reduction by 25 basis pts. if PAA's leverage ratio (long term debt to adj. EBITDA as calculated pursuant to PAA's sr. unsecured revolving credit facility) as of 6/30/29 is greater than the leverage ratio that equals the upper end of our then applicable non-rating agency target leverage ratio range.

F5 · derivative.expiration_date: DERs associated with Tranche 1 will accrue for the first year and be paid in cash in a lump sum on the August 2029 distribution date; beginning in November 2027, DERs associated with Tranche 1 will be paid quarterly until the phantom units vest or terminate. DERs associated with Tranches 2 and 3 will accrue during the three-year vesting period and be paid in cash in a lump sum on the August 2029 distribution date with respect to each phantom unit that vests, if any, on such date. Any Tranche 2 or Tranche 3 phantom units that are determined to not have vested as of the August 2029 distribution date shall expire as of such date.

SEC source: 0001070423-26-000040 · form4.xml · derivative · entry 4

McGee Richard K. · CIK 0001490023 · EVP, General Counsel & Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 88,500

Underlying: Common Units · 88,500 shares

Expires not disclosed

F1 · security: Phantom Units granted under Long-Term Incentive Plan (includes distribution equivalent rights payable in cash).

F2 · derivative.exercise_price: One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

F3 · derivative.exercise_date: These phantom units will vest as follows: (a) Tranche 1, consisting of 44,250 phantom units, will vest on the August 2029 distribution date assuming continued service through such date; (b) Tranche 2, consisting of 22,125 phantom units (assuming 100% payout at target), will potentially vest on the August 2029 distribution date at a scaled payout range of between 0% to 200% based on PAA's total shareholder return (TSR) over the three-year period ending June 30, 2029 compared to the TSR of a selected peer group (payout based on numeric rank with 100% earned at median and interpolation between ranks, and with payout being subject to reduction by up to 25 basis points, but not below 100%, if actual TSR is negative); and

F4 · derivative.exercise_date: (c) Tranche 3, consisting of 22,125 phantom units (assuming 100% payout at target), will potentially vest on the Aug. 2029 distribution date at a scaled payout range of between 0% and 200% based on PAA achieving cumul. distributable cash flow (DCF) per common unit equivalent (CUE) of $9.10 over the 3-year period ending 6/30/29 (with payout equaling 100% at cumul. DCF/CUE over such period of $9.10 and being equal to 0% for cumul. DCF/CUE over such period of $8.19 or lower and 200% for cumul. DCF/CUE over such period of $10.01 or higher), with interpolation btw. such points, and with payout being subject to reduction by 25 basis pts. if PAA's leverage ratio (long term debt to adj. EBITDA as calculated pursuant to PAA's sr. unsecured revolving credit facility) as of 6/30/29 is greater than the leverage ratio that equals the upper end of our then applicable non-rating agency target leverage ratio range.

F5 · derivative.exercise_date: DERs associated with Tranche 1 will accrue for the first year and be paid in cash in a lump sum on the August 2029 distribution date; beginning in November 2027, DERs associated with Tranche 1 will be paid quarterly until the phantom units vest or terminate. DERs associated with Tranches 2 and 3 will accrue during the three-year vesting period and be paid in cash in a lump sum on the August 2029 distribution date with respect to each phantom unit that vests, if any, on such date. Any Tranche 2 or Tranche 3 phantom units that are determined to not have vested as of the August 2029 distribution date shall expire as of such date.

F3 · derivative.expiration_date: These phantom units will vest as follows: (a) Tranche 1, consisting of 44,250 phantom units, will vest on the August 2029 distribution date assuming continued service through such date; (b) Tranche 2, consisting of 22,125 phantom units (assuming 100% payout at target), will potentially vest on the August 2029 distribution date at a scaled payout range of between 0% to 200% based on PAA's total shareholder return (TSR) over the three-year period ending June 30, 2029 compared to the TSR of a selected peer group (payout based on numeric rank with 100% earned at median and interpolation between ranks, and with payout being subject to reduction by up to 25 basis points, but not below 100%, if actual TSR is negative); and

F4 · derivative.expiration_date: (c) Tranche 3, consisting of 22,125 phantom units (assuming 100% payout at target), will potentially vest on the Aug. 2029 distribution date at a scaled payout range of between 0% and 200% based on PAA achieving cumul. distributable cash flow (DCF) per common unit equivalent (CUE) of $9.10 over the 3-year period ending 6/30/29 (with payout equaling 100% at cumul. DCF/CUE over such period of $9.10 and being equal to 0% for cumul. DCF/CUE over such period of $8.19 or lower and 200% for cumul. DCF/CUE over such period of $10.01 or higher), with interpolation btw. such points, and with payout being subject to reduction by 25 basis pts. if PAA's leverage ratio (long term debt to adj. EBITDA as calculated pursuant to PAA's sr. unsecured revolving credit facility) as of 6/30/29 is greater than the leverage ratio that equals the upper end of our then applicable non-rating agency target leverage ratio range.

F5 · derivative.expiration_date: DERs associated with Tranche 1 will accrue for the first year and be paid in cash in a lump sum on the August 2029 distribution date; beginning in November 2027, DERs associated with Tranche 1 will be paid quarterly until the phantom units vest or terminate. DERs associated with Tranches 2 and 3 will accrue during the three-year vesting period and be paid in cash in a lump sum on the August 2029 distribution date with respect to each phantom unit that vests, if any, on such date. Any Tranche 2 or Tranche 3 phantom units that are determined to not have vested as of the August 2029 distribution date shall expire as of such date.

SEC source: 0001070423-26-000037 · form4.xml · derivative · entry 8

Goebel Jeremy L. · CIK 0001769336 · EVP & CCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 113,600

Underlying: Common Units · 113,600 shares

Expires not disclosed

F1 · security: Phantom Units granted under Long-Term Incentive Plan (includes distribution equivalent rights payable in cash).

F2 · derivative.exercise_price: One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

F3 · derivative.exercise_date: These phantom units will vest as follows: (a) Tranche 1, consisting of 56,800 phantom units, will vest on the August 2029 distribution date assuming continued service through such date; (b) Tranche 2, consisting of 28,400 phantom units (assuming 100% payout at target), will potentially vest on the August 2029 distribution date at a scaled payout range of between 0% to 200% based on PAA's total shareholder return (TSR) over the three-year period ending June 30, 2029 compared to the TSR of a selected peer group (payout based on numeric rank with 100% earned at median and interpolation between ranks, and with payout being subject to reduction by up to 25 basis points, but not below 100%, if actual TSR is negative); and

F4 · derivative.exercise_date: (c) Tranche 3, consisting of 28,400 phantom units (assuming 100% payout at target), will potentially vest on the Aug. 2029 distribution date at a scaled payout range of between 0% and 200% based on PAA achieving cumul. distributable cash flow (DCF) per common unit equivalent (CUE) of $9.10 over the 3-year period ending 6/30/29 (with payout equaling 100% at cumul. DCF/CUE over such period of $9.10 and being equal to 0% for cumul. DCF/CUE over such period of $8.19 or lower and 200% for cumul. DCF/CUE over such period of $10.01 or higher), with interpolation btw. such points, and with payout being subject to reduction by 25 basis pts. if PAA's leverage ratio (long term debt to adj. EBITDA as calculated pursuant to PAA's sr. unsecured revolving credit facility) as of 6/30/29 is greater than the leverage ratio that equals the upper end of our then applicable non-rating agency target leverage ratio range.

F5 · derivative.exercise_date: DERs associated with Tranche 1 will accrue for the first year and be paid in cash in a lump sum on the August 2029 distribution date; beginning in November 2027, DERs associated with Tranche 1 will be paid quarterly until the phantom units vest or terminate. DERs associated with Tranches 2 and 3 will accrue during the three-year vesting period and be paid in cash in a lump sum on the August 2029 distribution date with respect to each phantom unit that vests, if any, on such date. Any Tranche 2 or Tranche 3 phantom units that are determined to not have vested as of the August 2029 distribution date shall expire as of such date.

F3 · derivative.expiration_date: These phantom units will vest as follows: (a) Tranche 1, consisting of 56,800 phantom units, will vest on the August 2029 distribution date assuming continued service through such date; (b) Tranche 2, consisting of 28,400 phantom units (assuming 100% payout at target), will potentially vest on the August 2029 distribution date at a scaled payout range of between 0% to 200% based on PAA's total shareholder return (TSR) over the three-year period ending June 30, 2029 compared to the TSR of a selected peer group (payout based on numeric rank with 100% earned at median and interpolation between ranks, and with payout being subject to reduction by up to 25 basis points, but not below 100%, if actual TSR is negative); and

F4 · derivative.expiration_date: (c) Tranche 3, consisting of 28,400 phantom units (assuming 100% payout at target), will potentially vest on the Aug. 2029 distribution date at a scaled payout range of between 0% and 200% based on PAA achieving cumul. distributable cash flow (DCF) per common unit equivalent (CUE) of $9.10 over the 3-year period ending 6/30/29 (with payout equaling 100% at cumul. DCF/CUE over such period of $9.10 and being equal to 0% for cumul. DCF/CUE over such period of $8.19 or lower and 200% for cumul. DCF/CUE over such period of $10.01 or higher), with interpolation btw. such points, and with payout being subject to reduction by 25 basis pts. if PAA's leverage ratio (long term debt to adj. EBITDA as calculated pursuant to PAA's sr. unsecured revolving credit facility) as of 6/30/29 is greater than the leverage ratio that equals the upper end of our then applicable non-rating agency target leverage ratio range.

F5 · derivative.expiration_date: DERs associated with Tranche 1 will accrue for the first year and be paid in cash in a lump sum on the August 2029 distribution date; beginning in November 2027, DERs associated with Tranche 1 will be paid quarterly until the phantom units vest or terminate. DERs associated with Tranches 2 and 3 will accrue during the three-year vesting period and be paid in cash in a lump sum on the August 2029 distribution date with respect to each phantom unit that vests, if any, on such date. Any Tranche 2 or Tranche 3 phantom units that are determined to not have vested as of the August 2029 distribution date shall expire as of such date.

SEC source: 0001070423-26-000035 · form4.xml · derivative · entry 6

Chandler Chris R. · CIK 0001769245 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 113,600

Underlying: Common Units · 113,600 shares

Expires not disclosed

F1 · security: Phantom Units granted under Long-Term Incentive Plan (includes distribution equivalent rights payable in cash).

F2 · derivative.exercise_price: One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

F3 · derivative.exercise_date: These phantom units will vest as follows: (a) Tranche 1, consisting of 56,800 phantom units, will vest on the August 2029 distribution date assuming continued service through such date; (b) Tranche 2, consisting of 28,400 phantom units (assuming 100% payout at target), will potentially vest on the August 2029 distribution date at a scaled payout range of between 0% to 200% based on PAA's total shareholder return (TSR) over the three-year period ending June 30, 2029 compared to the TSR of a selected peer group (payout based on numeric rank with 100% earned at median and interpolation between ranks, and with payout being subject to reduction by up to 25 basis points, but not below 100%, if actual TSR is negative); and

F4 · derivative.exercise_date: (c) Tranche 3, consisting of 28,400 phantom units (assuming 100% payout at target), will potentially vest on the Aug. 2029 distribution date at a scaled payout range of between 0% and 200% based on PAA achieving cumul. distributable cash flow (DCF) per common unit equivalent (CUE) of $9.10 over the 3-year period ending 6/30/29 (with payout equaling 100% at cumul. DCF/CUE over such period of $9.10 and being equal to 0% for cumul. DCF/CUE over such period of $8.19 or lower and 200% for cumul. DCF/CUE over such period of $10.01 or higher), with interpolation btw. such points, and with payout being subject to reduction by 25 basis pts. if PAA's leverage ratio (long term debt to adj. EBITDA as calculated pursuant to PAA's sr. unsecured revolving credit facility) as of 6/30/29 is greater than the leverage ratio that equals the upper end of our then applicable non-rating agency target leverage ratio range.

F5 · derivative.exercise_date: DERs associated with Tranche 1 will accrue for the first year and be paid in cash in a lump sum on the August 2029 distribution date; beginning in November 2027, DERs associated with Tranche 1 will be paid quarterly until the phantom units vest or terminate. DERs associated with Tranches 2 and 3 will accrue during the three-year vesting period and be paid in cash in a lump sum on the August 2029 distribution date with respect to each phantom unit that vests, if any, on such date. Any Tranche 2 or Tranche 3 phantom units that are determined to not have vested as of the August 2029 distribution date shall expire as of such date.

F3 · derivative.expiration_date: These phantom units will vest as follows: (a) Tranche 1, consisting of 56,800 phantom units, will vest on the August 2029 distribution date assuming continued service through such date; (b) Tranche 2, consisting of 28,400 phantom units (assuming 100% payout at target), will potentially vest on the August 2029 distribution date at a scaled payout range of between 0% to 200% based on PAA's total shareholder return (TSR) over the three-year period ending June 30, 2029 compared to the TSR of a selected peer group (payout based on numeric rank with 100% earned at median and interpolation between ranks, and with payout being subject to reduction by up to 25 basis points, but not below 100%, if actual TSR is negative); and

F4 · derivative.expiration_date: (c) Tranche 3, consisting of 28,400 phantom units (assuming 100% payout at target), will potentially vest on the Aug. 2029 distribution date at a scaled payout range of between 0% and 200% based on PAA achieving cumul. distributable cash flow (DCF) per common unit equivalent (CUE) of $9.10 over the 3-year period ending 6/30/29 (with payout equaling 100% at cumul. DCF/CUE over such period of $9.10 and being equal to 0% for cumul. DCF/CUE over such period of $8.19 or lower and 200% for cumul. DCF/CUE over such period of $10.01 or higher), with interpolation btw. such points, and with payout being subject to reduction by 25 basis pts. if PAA's leverage ratio (long term debt to adj. EBITDA as calculated pursuant to PAA's sr. unsecured revolving credit facility) as of 6/30/29 is greater than the leverage ratio that equals the upper end of our then applicable non-rating agency target leverage ratio range.

F5 · derivative.expiration_date: DERs associated with Tranche 1 will accrue for the first year and be paid in cash in a lump sum on the August 2029 distribution date; beginning in November 2027, DERs associated with Tranche 1 will be paid quarterly until the phantom units vest or terminate. DERs associated with Tranches 2 and 3 will accrue during the three-year vesting period and be paid in cash in a lump sum on the August 2029 distribution date with respect to each phantom unit that vests, if any, on such date. Any Tranche 2 or Tranche 3 phantom units that are determined to not have vested as of the August 2029 distribution date shall expire as of such date.

SEC source: 0001070423-26-000033 · form4.xml · derivative · entry 4

Chiang Willie CW · CIK 0001421559 · Director · Chairman & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 373,000

Underlying: Common Units · 373,000 shares

Expires not disclosed

F1 · security: Phantom Units granted under Long-Term Incentive Plan (includes distribution equivalent rights ("DER") payable in cash).

F2 · derivative.exercise_price: One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

F3 · derivative.exercise_date: These phantom units will vest as follows: (a) Tranche 1, consisting of 186,500 phantom units, will vest on the August 2029 distribution date assuming continued service through such date; (b) Tranche 2, consisting of 93,250 phantom units (assuming 100% payout at target), will potentially vest on the August 2029 distribution date at a scaled payout range of between 0% to 200% based on PAA's total shareholder return (TSR) over the three-year period ending June 30, 2029 compared to the TSR of a selected peer group (payout based on numeric rank with 100% earned at median and interpolation between ranks, and with payout being subject to reduction by up to 25 basis points, but not below 100%, if actual TSR is negative); and

F4 · derivative.exercise_date: (c) Tranche 3, consisting of 93,250 phantom units (assuming 100% payout at target), will potentially vest on the Aug. 2029 distribution date at a scaled payout range of between 0% and 200% based on PAA achieving cumul. distributable cash flow (DCF) per common unit equivalent (CUE) of $9.10 over the 3-year period ending 6/30/29 (with payout equaling 100% at cumul. DCF/CUE over such period of $9.10 and being equal to 0% for cumul. DCF/CUE over such period of $8.19 or lower and 200% for cumul. DCF/CUE over such period of $10.01 or higher), with interpolation btw. such points, and with payout being subject to reduction by 25 basis pts. if PAA's leverage ratio (long term debt to adj. EBITDA as calculated pursuant to PAA's sr. unsecured revolving credit facility) as of 6/30/29 is greater than the leverage ratio that equals the upper end of our then applicable non-rating agency target leverage ratio range.

F5 · derivative.exercise_date: DERs associated with Tranche 1 will accrue for the first year and be paid in cash in a lump sum on the August 2029 distribution date; beginning in November 2027, DERs associated with Tranche 1 will be paid quarterly until the phantom units vest or terminate. DERs associated with Tranches 2 and 3 will accrue during the three-year vesting period and be paid in cash in a lump sum on the August 2029 distribution date with respect to each phantom unit that vests, if any, on such date. Any Tranche 2 or Tranche 3 phantom units that are determined to not have vested as of the August 2029 distribution date shall expire as of such date.

F3 · derivative.expiration_date: These phantom units will vest as follows: (a) Tranche 1, consisting of 186,500 phantom units, will vest on the August 2029 distribution date assuming continued service through such date; (b) Tranche 2, consisting of 93,250 phantom units (assuming 100% payout at target), will potentially vest on the August 2029 distribution date at a scaled payout range of between 0% to 200% based on PAA's total shareholder return (TSR) over the three-year period ending June 30, 2029 compared to the TSR of a selected peer group (payout based on numeric rank with 100% earned at median and interpolation between ranks, and with payout being subject to reduction by up to 25 basis points, but not below 100%, if actual TSR is negative); and

F4 · derivative.expiration_date: (c) Tranche 3, consisting of 93,250 phantom units (assuming 100% payout at target), will potentially vest on the Aug. 2029 distribution date at a scaled payout range of between 0% and 200% based on PAA achieving cumul. distributable cash flow (DCF) per common unit equivalent (CUE) of $9.10 over the 3-year period ending 6/30/29 (with payout equaling 100% at cumul. DCF/CUE over such period of $9.10 and being equal to 0% for cumul. DCF/CUE over such period of $8.19 or lower and 200% for cumul. DCF/CUE over such period of $10.01 or higher), with interpolation btw. such points, and with payout being subject to reduction by 25 basis pts. if PAA's leverage ratio (long term debt to adj. EBITDA as calculated pursuant to PAA's sr. unsecured revolving credit facility) as of 6/30/29 is greater than the leverage ratio that equals the upper end of our then applicable non-rating agency target leverage ratio range.

F5 · derivative.expiration_date: DERs associated with Tranche 1 will accrue for the first year and be paid in cash in a lump sum on the August 2029 distribution date; beginning in November 2027, DERs associated with Tranche 1 will be paid quarterly until the phantom units vest or terminate. DERs associated with Tranches 2 and 3 will accrue during the three-year vesting period and be paid in cash in a lump sum on the August 2029 distribution date with respect to each phantom unit that vests, if any, on such date. Any Tranche 2 or Tranche 3 phantom units that are determined to not have vested as of the August 2029 distribution date shall expire as of such date.

SEC source: 0001070423-26-000024 · form4.xml · nonDerivative · entry 1

Ziemba Lawrence Michael · CIK 0001547334 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

SEC source: 0001062993-25-014622 · form4.xml · derivative · entry 4

Herbold Chris · CIK 0001497929 · Sr. VP Finance & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,750

Underlying: Common Units · 32,750 shares

Expires not disclosed

F1 · security: Phantom Units granted under Long-Term Incentive Plan (includes distribution equivalent rights payable in cash).

F2 · derivative.exercise_price: One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

F3 · derivative.exercise_date: These phantom units will vest as follows: (a) Tranche 1, consisting of 16,375 phantom units, will vest on the August 2028 distribution date assuming continued service through such date; (b) Tranche 2, consisting of 8,187 phantom units (assuming 100% payout at target), will potentially vest on the August 2028 distribution date at a scaled payout range of between 0% to 200% based on PAA's total shareholder return (TSR) over the three-year period ending June 30, 2028 compared to the TSR of a selected peer group (payout based on numeric rank with 100% earned at median and interpolation between ranks, and with payout being subject to reduction by up to 25 basis points, but not below 100%, if actual TSR is negative); and

F4 · derivative.exercise_date: (c) Tranche 3, consisting of 8,188 phantom units (assuming 100% payout at target), will potentially vest on the Aug. 2028 distribution date at a scaled payout range of between 0% and 200% based on PAA achieving cumul. distributable cash flow (DCF) per common unit equivalent (CUE) of $8.40 over the 3-year period ending 6/30/28 (with payout equaling 100% at cumul. DCF/CUE over such period of $8.40 and being equal to 0% for cumul. DCF/CUE over such period of $7.56 or lower and 200% for cumul. DCF/CUE over such period of $9.24 or higher, with interpolation btw. such points, and with payout being subject to reduction by 25 basis pts. if PAA's leverage ratio (long term debt to adj. EBITDA as calculated pursuant to PAA's sr. unsecured revolving credit facility) as of 6/30/28 is greater than the leverage ratio that equals the upper end of our then applicable non-rating agency target leverage ratio range.

F5 · derivative.exercise_date: DERs associated with Tranche 1 will accrue for the first year and be paid in cash in a lump sum on the August 2026 distribution date; beginning in November 2026, DERs associated with Tranche 1 will be paid quarterly until the phantom units vest or terminate. DERs associated with Tranches 2 and 3 will accrue during the three-year vesting period and be paid in cash in a lump sum on the August 2028 distribution date with respect to each phantom unit that vests, if any, on such date. Any Tranche 2 or Tranche 3 phantom units that are determined to not have vested as of the August 2028 distribution date shall expire as of such date.

F3 · derivative.expiration_date: These phantom units will vest as follows: (a) Tranche 1, consisting of 16,375 phantom units, will vest on the August 2028 distribution date assuming continued service through such date; (b) Tranche 2, consisting of 8,187 phantom units (assuming 100% payout at target), will potentially vest on the August 2028 distribution date at a scaled payout range of between 0% to 200% based on PAA's total shareholder return (TSR) over the three-year period ending June 30, 2028 compared to the TSR of a selected peer group (payout based on numeric rank with 100% earned at median and interpolation between ranks, and with payout being subject to reduction by up to 25 basis points, but not below 100%, if actual TSR is negative); and

F4 · derivative.expiration_date: (c) Tranche 3, consisting of 8,188 phantom units (assuming 100% payout at target), will potentially vest on the Aug. 2028 distribution date at a scaled payout range of between 0% and 200% based on PAA achieving cumul. distributable cash flow (DCF) per common unit equivalent (CUE) of $8.40 over the 3-year period ending 6/30/28 (with payout equaling 100% at cumul. DCF/CUE over such period of $8.40 and being equal to 0% for cumul. DCF/CUE over such period of $7.56 or lower and 200% for cumul. DCF/CUE over such period of $9.24 or higher, with interpolation btw. such points, and with payout being subject to reduction by 25 basis pts. if PAA's leverage ratio (long term debt to adj. EBITDA as calculated pursuant to PAA's sr. unsecured revolving credit facility) as of 6/30/28 is greater than the leverage ratio that equals the upper end of our then applicable non-rating agency target leverage ratio range.

F5 · derivative.expiration_date: DERs associated with Tranche 1 will accrue for the first year and be paid in cash in a lump sum on the August 2026 distribution date; beginning in November 2026, DERs associated with Tranche 1 will be paid quarterly until the phantom units vest or terminate. DERs associated with Tranches 2 and 3 will accrue during the three-year vesting period and be paid in cash in a lump sum on the August 2028 distribution date with respect to each phantom unit that vests, if any, on such date. Any Tranche 2 or Tranche 3 phantom units that are determined to not have vested as of the August 2028 distribution date shall expire as of such date.

SEC source: 0001062993-25-014622 · form4.xml · derivative · entry 3

Herbold Chris · CIK 0001497929 · Sr. VP Finance & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units · 65,796 shares

Expires 2025-08-14

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 · security: Phantom Units granted under Long-Term Incentive Plan (includes distribution equivalent rights payable in cash).

F2 · derivative.exercise_price: One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

SEC source: 0001062993-25-014622 · form4.xml · nonDerivative · entry 2

Herbold Chris · CIK 0001497929 · Sr. VP Finance & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 241,073

SEC source: 0001062993-25-014622 · form4.xml · nonDerivative · entry 1

Herbold Chris · CIK 0001497929 · Sr. VP Finance & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 264,357

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.

SEC source: 0001062993-25-014618 · form4.xml · derivative · entry 7

Goebel Jeremy L. · CIK 0001769336 · EVP & CCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 545,550

Underlying: Common Units · 545,550 shares

Expires 2030-08-14

F6 · security: Special long-term retention award of phantom units granted under Long-Term Incentive Plan (includes DERs payable in cash).

F2 · derivative.exercise_price: One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

F7 · derivative.exercise_date: These phantom units will vest on the August 2030 distribution date assuming continued service through such date. 20% of the DERs associated with these phantom units will accrue for the first year and be paid in cash in a lump sum on the August 2026 distribution date; beginning in November 2026, this portion of the DERs will be paid quarterly until the phantom units vest or terminate. Beginning with the August 2026 distribution date, an additional 20% of the DERs will vest each year on the August distribution date (such that 100% of the DERs will have vested by the August 2029 distribution date) and will be paid quarterly until the phantom units vest or terminate.

SEC source: 0001062993-25-014618 · form4.xml · derivative · entry 6

Goebel Jeremy L. · CIK 0001769336 · EVP & CCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 144,900

Underlying: Common Units · 144,900 shares

Expires not disclosed

F1 · security: Phantom Units granted under Long-Term Incentive Plan (includes distribution equivalent rights payable in cash).

F2 · derivative.exercise_price: One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

F3 · derivative.exercise_date: These phantom units will vest as follows: (a) Tranche 1, consisting of 72,450 phantom units, will vest on the August 2028 distribution date assuming continued service through such date; (b) Tranche 2, consisting of 36,225 phantom units (assuming 100% payout at target), will potentially vest on the August 2028 distribution date at a scaled payout range of between 0% to 200% based on PAA's total shareholder return (TSR) over the three-year period ending June 30, 2028 compared to the TSR of a selected peer group (payout based on numeric rank with 100% earned at median and interpolation between ranks, and with payout being subject to reduction by up to 25 basis points, but not below 100%, if actual TSR is negative); and

F4 · derivative.exercise_date: (c) Tranche 3, consisting of 36,225 phantom units (assuming 100% payout at target), will potentially vest on the Aug. 2028 distribution date at a scaled payout range of between 0% and 200% based on PAA achieving cumul. distributable cash flow (DCF) per common unit equivalent (CUE) of $8.40 over the 3-year period ending 6/30/28 (with payout equaling 100% at cumul. DCF/CUE over such period of $8.40 and being equal to 0% for cumul. DCF/CUE over such period of $7.56 or lower and 200% for cumul. DCF/CUE over such period of $9.24 or higher, with interpolation btw. such points, and with payout being subject to reduction by 25 basis pts. if PAA's leverage ratio (long term debt to adj. EBITDA as calculated pursuant to PAA's sr. unsecured revolving credit facility) as of 6/30/28 is greater than the leverage ratio that equals the upper end of our then applicable non-rating agency target leverage ratio range.

F5 · derivative.exercise_date: DERs associated with Tranche 1 will accrue for the first year and be paid in cash in a lump sum on the August 2026 distribution date; beginning in November 2026, DERs associated with Tranche 1 will be paid quarterly until the phantom units vest or terminate. DERs associated with Tranches 2 and 3 will accrue during the three-year vesting period and be paid in cash in a lump sum on the August 2028 distribution date with respect to each phantom unit that vests, if any, on such date. Any Tranche 2 or Tranche 3 phantom units that are determined to not have vested as of the August 2028 distribution date shall expire as of such date.

F3 · derivative.expiration_date: These phantom units will vest as follows: (a) Tranche 1, consisting of 72,450 phantom units, will vest on the August 2028 distribution date assuming continued service through such date; (b) Tranche 2, consisting of 36,225 phantom units (assuming 100% payout at target), will potentially vest on the August 2028 distribution date at a scaled payout range of between 0% to 200% based on PAA's total shareholder return (TSR) over the three-year period ending June 30, 2028 compared to the TSR of a selected peer group (payout based on numeric rank with 100% earned at median and interpolation between ranks, and with payout being subject to reduction by up to 25 basis points, but not below 100%, if actual TSR is negative); and

F4 · derivative.expiration_date: (c) Tranche 3, consisting of 36,225 phantom units (assuming 100% payout at target), will potentially vest on the Aug. 2028 distribution date at a scaled payout range of between 0% and 200% based on PAA achieving cumul. distributable cash flow (DCF) per common unit equivalent (CUE) of $8.40 over the 3-year period ending 6/30/28 (with payout equaling 100% at cumul. DCF/CUE over such period of $8.40 and being equal to 0% for cumul. DCF/CUE over such period of $7.56 or lower and 200% for cumul. DCF/CUE over such period of $9.24 or higher, with interpolation btw. such points, and with payout being subject to reduction by 25 basis pts. if PAA's leverage ratio (long term debt to adj. EBITDA as calculated pursuant to PAA's sr. unsecured revolving credit facility) as of 6/30/28 is greater than the leverage ratio that equals the upper end of our then applicable non-rating agency target leverage ratio range.

F5 · derivative.expiration_date: DERs associated with Tranche 1 will accrue for the first year and be paid in cash in a lump sum on the August 2026 distribution date; beginning in November 2026, DERs associated with Tranche 1 will be paid quarterly until the phantom units vest or terminate. DERs associated with Tranches 2 and 3 will accrue during the three-year vesting period and be paid in cash in a lump sum on the August 2028 distribution date with respect to each phantom unit that vests, if any, on such date. Any Tranche 2 or Tranche 3 phantom units that are determined to not have vested as of the August 2028 distribution date shall expire as of such date.

SEC source: 0001062993-25-014618 · form4.xml · derivative · entry 5

Goebel Jeremy L. · CIK 0001769336 · EVP & CCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units · 227,864 shares

Expires 2025-08-14

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 · security: Phantom Units granted under Long-Term Incentive Plan (includes distribution equivalent rights payable in cash).

F2 · derivative.exercise_price: One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

SEC source: 0001062993-25-014618 · form4.xml · nonDerivative · entry 4

Goebel Jeremy L. · CIK 0001769336 · EVP & CCO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Family Limited Partnership

Disclosed balance after: 518,936

SEC source: 0001062993-25-014618 · form4.xml · nonDerivative · entry 3

Goebel Jeremy L. · CIK 0001769336 · EVP & CCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

SEC source: 0001062993-25-014618 · form4.xml · nonDerivative · entry 2

Goebel Jeremy L. · CIK 0001769336 · EVP & CCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 138,199

SEC source: 0001062993-25-014618 · form4.xml · nonDerivative · entry 1

Goebel Jeremy L. · CIK 0001769336 · EVP & CCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 227,864

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.

SEC source: 0001062993-25-014616 · form4.xml · derivative · entry 5

Chandler Chris R. · CIK 0001769245 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 327,350

Underlying: Common Units · 327,350 shares

Expires 2028-08-14

F6 · security: Special long-term retention award of phantom units granted under Long-Term Incentive Plan (includes DERs payable in cash).

F2 · derivative.exercise_price: One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

F7 · derivative.exercise_date: These phantom units will vest on the August 2028 distribution date assuming continued service through such date. One-third of the DERs associated with these phantom units will accrue for the first year and be paid in cash in a lump sum on the August 2026 distribution date; beginning in November 2026, this portion of the DERs will be paid quarterly until the phantom units vest or terminate. Beginning with the August 2026 distribution date, an additional one-third of the DERs will vest each year on the August distribution date (such that 100% of the DERs will have vested by the August 2027 distribution date) and will be paid quarterly until the phantom units vest or terminate.

SEC source: 0001062993-25-014616 · form4.xml · derivative · entry 4

Chandler Chris R. · CIK 0001769245 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 144,900

Underlying: Common Units · 144,900 shares

Expires not disclosed

F1 · security: Phantom Units granted under Long-Term Incentive Plan (includes distribution equivalent rights payable in cash).

F2 · derivative.exercise_price: One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

F3 · derivative.exercise_date: These phantom units will vest as follows: (a) Tranche 1, consisting of 72,450 phantom units, will vest on the August 2028 distribution date assuming continued service through such date; (b) Tranche 2, consisting of 36,225 phantom units (assuming 100% payout at target), will potentially vest on the August 2028 distribution date at a scaled payout range of between 0% to 200% based on PAA's total shareholder return (TSR) over the three-year period ending June 30, 2028 compared to the TSR of a selected peer group (payout based on numeric rank with 100% earned at median and interpolation between ranks, and with payout being subject to reduction by up to 25 basis points, but not below 100%, if actual TSR is negative); and

F4 · derivative.exercise_date: (c) Tranche 3, consisting of 36,225 phantom units (assuming 100% payout at target), will potentially vest on the Aug. 2028 distribution date at a scaled payout range of between 0% and 200% based on PAA achieving cumul. distributable cash flow (DCF) per common unit equivalent (CUE) of $8.40 over the 3-year period ending 6/30/28 (with payout equaling 100% at cumul. DCF/CUE over such period of $8.40 and being equal to 0% for cumul. DCF/CUE over such period of $7.56 or lower and 200% for cumul. DCF/CUE over such period of $9.24 or higher, with interpolation btw. such points, and with payout being subject to reduction by 25 basis pts. if PAA's leverage ratio (long term debt to adj. EBITDA as calculated pursuant to PAA's sr. unsecured revolving credit facility) as of 6/30/28 is greater than the leverage ratio that equals the upper end of our then applicable non-rating agency target leverage ratio range.

F5 · derivative.exercise_date: DERs associated with Tranche 1 will accrue for the first year and be paid in cash in a lump sum on the August 2026 distribution date; beginning in November 2026, DERs associated with Tranche 1 will be paid quarterly until the phantom units vest or terminate. DERs associated with Tranches 2 and 3 will accrue during the three-year vesting period and be paid in cash in a lump sum on the August 2028 distribution date with respect to each phantom unit that vests, if any, on such date. Any Tranche 2 or Tranche 3 phantom units that are determined to not have vested as of the August 2028 distribution date shall expire as of such date.

F3 · derivative.expiration_date: These phantom units will vest as follows: (a) Tranche 1, consisting of 72,450 phantom units, will vest on the August 2028 distribution date assuming continued service through such date; (b) Tranche 2, consisting of 36,225 phantom units (assuming 100% payout at target), will potentially vest on the August 2028 distribution date at a scaled payout range of between 0% to 200% based on PAA's total shareholder return (TSR) over the three-year period ending June 30, 2028 compared to the TSR of a selected peer group (payout based on numeric rank with 100% earned at median and interpolation between ranks, and with payout being subject to reduction by up to 25 basis points, but not below 100%, if actual TSR is negative); and

F4 · derivative.expiration_date: (c) Tranche 3, consisting of 36,225 phantom units (assuming 100% payout at target), will potentially vest on the Aug. 2028 distribution date at a scaled payout range of between 0% and 200% based on PAA achieving cumul. distributable cash flow (DCF) per common unit equivalent (CUE) of $8.40 over the 3-year period ending 6/30/28 (with payout equaling 100% at cumul. DCF/CUE over such period of $8.40 and being equal to 0% for cumul. DCF/CUE over such period of $7.56 or lower and 200% for cumul. DCF/CUE over such period of $9.24 or higher, with interpolation btw. such points, and with payout being subject to reduction by 25 basis pts. if PAA's leverage ratio (long term debt to adj. EBITDA as calculated pursuant to PAA's sr. unsecured revolving credit facility) as of 6/30/28 is greater than the leverage ratio that equals the upper end of our then applicable non-rating agency target leverage ratio range.

F5 · derivative.expiration_date: DERs associated with Tranche 1 will accrue for the first year and be paid in cash in a lump sum on the August 2026 distribution date; beginning in November 2026, DERs associated with Tranche 1 will be paid quarterly until the phantom units vest or terminate. DERs associated with Tranches 2 and 3 will accrue during the three-year vesting period and be paid in cash in a lump sum on the August 2028 distribution date with respect to each phantom unit that vests, if any, on such date. Any Tranche 2 or Tranche 3 phantom units that are determined to not have vested as of the August 2028 distribution date shall expire as of such date.

SEC source: 0001062993-25-014616 · form4.xml · derivative · entry 3

Chandler Chris R. · CIK 0001769245 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units · 227,864 shares

Expires 2025-08-14

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 · security: Phantom Units granted under Long-Term Incentive Plan (includes distribution equivalent rights payable in cash).

F2 · derivative.exercise_price: One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

SEC source: 0001062993-25-014616 · form4.xml · nonDerivative · entry 2

Chandler Chris R. · CIK 0001769245 · EVP & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 493,904