PLAINS ALL AMERICAN PIPELINE LP

Note 6—Partners’ Capital and Distributions

Units Outstanding

The following tables present the activity for our preferred and common units:

Distributions

Series A Preferred Unit Distributions. Distributions on the Series A preferred units accumulate and are payable quarterly within 45 days following the end of each quarter. See Note 11 to our Consolidated Financial Statements included in Part IV of our 2023 Annual Report on Form 10-K for additional information regarding Series A preferred unit distributions. The following table details distributions to our Series A preferred unitholders paid during or pertaining to the first three months of 2024 (in millions, except per unit data):

(1)Payable to unitholders of record at the close of business on May 1, 2024 for the period from January 1, 2024 through March 31, 2024. At March 31, 2024, such amount was accrued as distributions payable in “Other current liabilities” on our Condensed Consolidated Balance Sheet.

Series B Preferred Unit Distributions. Distributions on the Series B preferred units accumulate and are payable quarterly in arrears on the 15th day of February, May, August and November. See Note 11 to our Consolidated Financial Statements included in Part IV of our 2023 Annual Report on Form 10-K for additional information regarding Series B preferred unit distributions. The following table details distributions paid or to be paid to our Series B preferred unitholders (in millions, except per unit data):

(1)Payable to unitholders of record at the close of business on May 1, 2024 for the period from February 15, 2024 through May 14, 2024. At March 31, 2024, approximately $10 million of accrued distributions payable to our Series B preferred unitholders was included in “Other current liabilities” on our Condensed Consolidated Balance Sheet.

Common Unit Distributions. The following table details distributions to our common unitholders paid during or pertaining to the first three months of 2024 (in millions, except per unit data):

(1)Payable to unitholders of record at the close of business on May 1, 2024 for the period from January 1, 2024 through March 31, 2024.

Noncontrolling Interests in Subsidiaries

As of March 31, 2024, noncontrolling interests in our subsidiaries consisted of (i) a 35% interest in Plains Oryx Permian Basin LLC (the “Permian JV”), (ii) a 30% interest in Cactus II Pipeline LLC (“Cactus II”) and (iii) a 33% interest in Red River Pipeline Company LLC (“Red River”).

Distributions to Noncontrolling Interests

The following table details distributions paid to noncontrolling interests during the periods presented (in millions):