PAA Plains All American Pipeline LP - 8-K

Item 5.07

Submission of Matters to a Vote of Security Holders.

The 2026 annual meeting of common unitholders
and Series A Convertible Preferred unitholders (collectively, the “Unitholders”) of Plains All American Pipeline, L.P.
(“PAA” or the “Partnership”) was held on May 20, 2026. At the annual meeting, the Unitholders (other than
Plains AAP, L.P.) considered and voted on how to instruct PAA to vote the Class C shares of Plains GP Holdings, L.P. (“PAGP”)
that PAA owns at PAGP’s annual meeting with respect to the following matters, each of which is described in greater detail in PAA’s
Proxy Statement dated April 10, 2026 (the “Proxy Statement”): (i) the election of four Class I directors to
serve on the board of directors of PAA GP Holdings LLC until the 2029 annual meeting; (ii) the ratification of the appointment of
PricewaterhouseCoopers LLP as PAGP’s and PAA’s independent registered public accounting firm for the fiscal year ending December 31,
2026; and (iii) the approval, on a non-binding advisory basis, of our 2025 named executive officer compensation.

Out of the 530,943,161 common units and Series A
Preferred units entitled to vote on Items 1, 2 and 3, approximately 83.2%, or 441,976,013 units, were represented in person or by proxy
at the PAA annual meeting. The voting results for each matter presented at the PAA annual meeting were as follows:

1.

Unitholders (other than Plains AAP, L.P.) voted to instruct PAA to vote the PAGP Class C shares that it owns at the PAGP annual
meeting on the election of four Class I directors to serve on the board of directors of PAA GP Holdings LLC until the 2029 annual
meeting as follows:

Percentage of Votes Cast

Nominees

For

Withheld

FOR*

Broker Non-Votes

1.

Willie Chiang

305,596,109

6,476,382

97.9%

129,903,522

2.

Ellen DeSanctis

306,878,470

5,194,021

98.3%

129,903,522

3.

Alexandra Pruner

304,958,788

7,113,703

97.7%

129,903,522

4.

Larry Ziemba

306,095,853

5,976,638

98.1%

129,903,522

2.

Unitholders (other than Plains AAP, L.P.) voted to instruct PAA to vote the PAGP Class C shares that it owns at the PAGP annual
meeting on the ratification of the appointment of PricewaterhouseCoopers LLP as PAGP’s and PAA’s independent registered public
accounting firm for the fiscal year ending December 31, 2026 as follows:

Percentage of Votes Cast

For

Against

Abstained

FOR*

Broker Non-Votes

437,632,921

3,758,542

584,550

99.0%

-0-

3.

Unitholders (other than Plains AAP, L.P.) voted to instruct PAA to vote the PAGP Class C shares that it owns at the PAGP annual
meeting on the approval, on a non-binding advisory basis, of our 2025 named executive officer compensation as follows:

Percentage of Votes Cast

For

Against

Abstained

FOR*

Broker Non-Votes

188,931,812

121,666,547

1,474,133

60.5%

129,903,521

*With respect to Items 1, 2 and 3, PAA Unitholders (other than Plains
AAP, L.P.) voted on a “pass-through” basis by instructing PAA how to vote the PAGP Class C shares that it owns on Items
1, 2 and 3 at the PAGP annual meeting.

2