PAA · Plains All American Pipeline LP · Insider Trading

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.

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.

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.

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

One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

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

One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

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

One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

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

One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

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

One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

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

One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

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

One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

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.

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.

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

One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

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

One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

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

One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

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

(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.

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.

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

One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

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

(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.

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.

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

One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

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

(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.

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.

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

One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

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

(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.

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.

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

One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

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

(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.

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.

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

One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

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

One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

The original Form 4 filed on August 18, 2025 inadvertently reported the acquisition of 10,000 more phantom units than were actually acquired; this amendment is being filed to correct the error.

These phantom units will vest as follows: (a) Tranche 1, consisting of 56,325 phantom units, will vest on the August 2028 distribution date assuming continued service through such date; (b) Tranche 2, consisting of 28,162 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

(c) Tranche 3, consisting of 28,163 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.

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.

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

One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

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

One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

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

One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

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.

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

One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

The expiration date of these outstanding phantom units has been extended from October 2025 to October 2030, resulting in the deemed cancellation of the original phantom units and deemed grant under the Long-Term Incentive Plan of replacement phantom units described in footnote 7 below. The original phantom units were granted in August 2018. The phantom units include associated DERs payable in cash.

One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

Although the expiration date of the original phantom units has been extended from Oct. 2025 to Oct. 2030, the other vesting terms remain the same. The phantom units will vest (i) 25% on the first distribution date on which PAA has generated DCF per common unit (DCF/CU) of at least $3.00 on a trailing four quarter basis (TFQB), and (ii) 75% on the first distribution date on which PAA has generated DCF/CU of at least $3.50 on a TFQB. DERs associated with these phantom units have vested or will vest as follows: (i) 1/3 vested on the May 2019 distribution date, (ii) 1/3 will vest on the first distribution date on which PAA generates DCF/CU of at least $2.60 on a TFQB, and (iii) 1/3 will vest on the first distribution date on which PAA generates DCF/CU of at least $2.80 on a TFQB. The phantom units and associated DERs also vest upon termination of employment under certain circumstances. Any phantom units and associated DERs that have not vested by 10-1-2030 will expire at that time.

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

One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

These phantom units will vest as follows: (a) Tranche 1, consisting of 54,425 phantom units, will vest on the August 2028 distribution date assuming continued service through such date; (b) Tranche 2, consisting of 27,212 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

(c) Tranche 3, consisting of 27,213 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.

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.

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

One common unit is deliverable, upon vesting, for each Phantom Unit that vests.

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.