PLAINS ALL AMERICAN PIPELINE LP (PAA)

Retention Agreement | Amendment to 2018 Promotional Grant extending the expiration date from October 2025 to October 1, 2030.; Equity grant of 500,000 phantom units, payable in PAA common units upon vesting.; Performance-based vesting: 25% vests when DCF per Common Unit reaches $3.00 (trailing four-quarter basis); 75% vests when DCF per Common Unit reaches $3.50.; Distribution Equivalent Rights (DERs): One-third vested May 2019; remaining two-thirds vest upon reaching DCF targets of $2.60 and $2.80 per unit, respectively.; Vesting acceleration: Phantom units and DERs vest upon death, disability, termination without cause, change of control, or approved retirement.; Units and associated DERs expire if not vested by October 1, 2030.

Retention Agreement | Special retention award of 545,550 phantom units (five-year award).; Cliff vesting: Full vesting occurs on the August 2030 distribution date, contingent on continued service.; Distribution Equivalent Rights (DERs): 20% accrue the first year (paid lump sum August 2026), with an additional 20% vesting annually each August until 100% vested by August 2029.; Vesting acceleration: Full vesting of phantom units and DERs upon death, disability, termination without cause, change of control, or approved retirement.; Award intended to provide retention incentive beyond the August 2026 vesting of prior 2019 special retention grants.

Retention Agreement | Special retention award of 327,350 phantom units (three-year award).; Cliff vesting: Full vesting occurs on the August 2028 distribution date, contingent on continued service.; Distribution Equivalent Rights (DERs): One-third accrue the first year (paid lump sum August 2026), with an additional one-third vesting annually each August until 100% vested by August 2027.; Vesting acceleration: Full vesting of phantom units and DERs upon death, disability, termination without cause, change of control, or approved retirement.; Award intended to provide retention incentive beyond the August 2026 vesting of prior 2019 special retention grants.

Willie Chiang stock (208,675 target units, 417,350 maximum, Grant FV $5,540,322)

Willie Chiang Equity award (Grant FV $2,895,505)

Al Swanson stock (54,425 target units, 108,850 maximum, Grant FV $1,444,984)

Richard McGee stock (56,325 target units, 112,650 maximum, Grant FV $1,495,429)

Chris Chandler stock (72,450 target units, 144,900 maximum, Grant FV $1,923,548)