On August 19, 2024, Plains All American Pipeline, L.P. (the ?Partnership?) and Plains Midstream Canada ULC (?PMC?), entered into that certain Second Amendment to Credit Agreement (the ?Revolving Credit Facility Amendment?) amending certain of the terms of their Credit Agreement dated as of August 20, 2021 among the Partnership and PMC, as borrowers, Bank of America, N.A., as administrative agent, and the other lenders party thereto (as amended, the ?Revolving Credit Agreement?). Pursuant to the Revolving Credit Facility Amendment, among other things, the Canadian dollar offered rate (CDOR) was replaced with rates based on the Canadian Overnight Repo Rate Average (CORRA), and the requirement that lenders accept Canadian bankers? acceptances issued by PMC or other designated borrowers was eliminated.

In connection with the Revolving Credit Facility Amendment, the Maturity Date of the Revolving Credit Agreement was also extended from August 18, 2028 to August 17, 2029. Terms used in this paragraph but not defined herein have the meanings assigned to them in the Revolving Credit Agreement. On August 19, 2024, Plains Marketing, L.P. (?PMLP?), a wholly-owned subsidiary of the Partnership, and PMC entered into that certain Second Amendment to Fourth Amended and Restated Credit Agreement (the ?Hedged Inventory Facility Amendment?

and together with the Revolving Credit Facility Amendment, the ?Amendments?) amending certain of the terms of their Fourth Amended and Restated Credit Agreement dated as of August 20, 2021 among PMLP and PMC, as borrowers, the Partnership, as guarantor, Bank of America, N.A., as administrative agent, and the other lenders party thereto (as amended, the ?Hedged Inventory Facility?). Pursuant to the Hedged Inventory Facility Amendment, among other things, the Canadian dollar offered rate (CDOR) was replaced with rates based on the Canadian Overnight Repo Rate Average (CORRA), and the requirement that lenders accept Canadian bankers? acceptances issued by PMC or other designated borrowers was eliminated.

In connection with the Hedged Inventory Facility Amendment, the Maturity Date of the Hedged Inventory Facility was also extended from August 18, 2026 to August 18, 2027.