Material Agreement (Form 8-K)

Senior Unsecured Revolving Credit Facility

On June 12, 2026, Plains All American Pipeline, L.P. (the "Partnership") entered into an unsecured Credit Agreement (the "Revolving Credit Agreement"), among the Partnership, Plains Marketing, L.P., a Texas limited partnership ("PMLP"), and Plains Canada Liquid Pipelines ULC, a British Columbia unlimited liability company ("PCLP"), as Borrowers; certain subsidiaries of the Partnership from time to time party thereto, as Designated Borrowers; Bank of America, N.A., as Administrative Agent and Swing Line Lender; Bank of America, N.A., PNC Bank, National Association and Wells Fargo Bank, National Association, as L/C Issuers; and the other Lenders party thereto (terms used but not defined in this description of the Revolving Credit Agreement have the meanings assigned to them in the Revolving Credit Agreement).

The Revolving Credit Agreement replaces (a) the Partnership's Credit Agreement dated as of August 20, 2021, as amended to date, among the Partnership and PCLP, as Borrowers; certain subsidiaries of the Partnership from time to time party thereto, as designated borrowers; Bank of America, N.A., as Administrative Agent and Swing Line Lender; Bank of America, N.A., Citibank, N.A., JPMorgan Chase Bank, N.A. and Wells Fargo Bank, National Association, as L/C Issuers; and the other Lenders party thereto (as amended, the "Existing Revolving Credit Agreement") and (b) PMLP's Fourth Amended and Restated Credit Agreement dated as of August 20, 2021, as amended to date, among PMLP and PCLP, as Borrowers; the Partnership, as guarantor; Bank of America, N.A., as Administrative Agent and Swing Line Lender; Bank of America, N.A., Citibank, N.A., JPMorgan Chase Bank, N.A. and Wells Fargo Bank, National Association, as L/C Issuers; and the other Lenders party thereto (as amended, the "Hedged Inventory Facility").

The committed borrowing capacity under the Revolving Credit Agreement is $2.7 billion, up to $800 million of which is available for the issuance of letters of credit and up to $225 million of which is available for swing line loans. The committed amount may be increased at the option of the Partnership to $4.0 billion, subject to, among other terms and conditions, obtaining additional or increased lender commitments. Further, the Revolving Credit Agreement permits each Canadian subsidiary of the Partnership that is then designated as a Designated Borrower to obtain advances in Canadian or U.S. dollars and Letters of Credit, up to an aggregate outstanding principal amount of the U.S. dollar equivalent of $1.0 billion. Payment Obligations of each Designated Borrower are guaranteed by the Partnership. The Revolving Credit Agreement has a scheduled maturity date of June 12, 2031 and provides for one or more one-year extensions subject to applicable lender approval and other terms and conditions set forth in the Revolving Credit Agreement.

Borrowings under the Revolving Credit Agreement accrue interest based, at the applicable Borrower's election, on either Term SOFR, the Base Rate, the Canadian Term Rate or the Canadian Prime Rate, in each case, plus an applicable margin. Fees on issued Letters of Credit accrue at the applicable margin for Term SOFR Loans and Canadian Term Rate Loans, and a commitment fee accrues at an applicable margin. The applicable margin used in connection with interest rates and fees is based on the Partnership's credit rating at the applicable time.

The Revolving Credit Agreement contains representations and warranties and events of default that are customary for investment grade, senior unsecured commercial bank credit agreements. In addition, the Revolving Credit Agreement contains various covenants limiting the Partnership's or certain of its subsidiaries' ability to, among other things:

In addition, the Revolving Credit Agreement prohibits the declaration or making of distributions on, or purchases or redemptions of, the Partnership's equity interests if any Default or Event of Default has occurred and is continuing or, immediately after giving effect thereto, would result therefrom.