# EDGAR Filing Document

**Accession Number:** 0001070423
**File Stem:** 0001104659-26-065738
**Filing Date:** 2026-5
**Character Count:** 7532
**Document Hash:** faa332fbbd026089d7c90a6d7e50742d
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-065738.hdr.sgml**: 20260522

**ACCESSION NUMBER**: 0001104659-26-065738

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 11

**CONFORMED PERIOD OF REPORT**: 20260520

**ITEM INFORMATION**: Submission of Matters to a Vote of Security Holders

**FILED AS OF DATE**: 20260522

**DATE AS OF CHANGE**: 20260522

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** PLAINS ALL AMERICAN PIPELINE LP
- **CENTRAL INDEX KEY:** 0001070423
- **STANDARD INDUSTRIAL CLASSIFICATION:** PIPE LINES (NO NATURAL GAS) [4610]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 760582150
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-14569
- **FILM NUMBER:** 261014151

**BUSINESS ADDRESS:**
- **STREET 1:** 333 CLAY STREET
- **STREET 2:** SUITE 1600
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77002
- **BUSINESS PHONE:** 7136544100

**MAIL ADDRESS:**
- **STREET 1:** 333 CLAY STREET
- **STREET 2:** SUITE 1600
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77002

?xml version='1.0' encoding='ASCII'?

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 8-K**

**CURRENT REPORT**

**Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934**

Date of Report (Date of earliest event reported) – **May 20, 2026**

**Plains All American Pipeline, L.P.**

(Exact name of registrant as specified in its charter)

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| | | |
|:---|:---|:---|
| **Delaware** | **1-14569** | **76-0582150** |
| (State or other jurisdiction of <br> incorporation) | (Commission File Number) | (IRS Employer <br> Identification No.) |

---

**333 Clay Street, Suite 1600, Houston, Texas 77002**

(Address of principal executive offices) (Zip Code)

**713** **-646-4100**

(Registrant's telephone number, including area code)

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

◻ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

◻ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

◻ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

◻ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

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| | | |
|:---|:---|:---|
| **Title of each class** | **Trading Symbol(s)** | **Name of each exchange on which registered** |
| Common Units | PAA | Nasdaq |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 or Rule 12b-2 of the Securities Exchange Act of 1934.

Emerging growth company ◻

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ◻

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| | |
|:---|:---|
| **Item 5.07** | **Submission of Matters to a Vote of Security Holders.** |

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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:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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:

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Nominees** | **Nominees** | <br>**For** | <br>**Withheld** | **Percentage of Votes Cast**<br>**FOR\*** | <br>**Broker Non-Votes** |
| 1. | Willie Chiang | 305596109 | 6476382 | 97.9% | 129903522 |
| 2. | Ellen DeSanctis | 306878470 | 5194021 | 98.3% | 129903522 |
| 3. | Alexandra Pruner | 304958788 | 7113703 | 97.7% | 129903522 |
| 4. | Larry Ziemba | 306095853 | 5976638 | 98.1% | 129903522 |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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:

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| | | | | |
|:---|:---|:---|:---|:---|
| <br>**For** | <br>**Against** | <br>**Abstained** | **Percentage of Votes Cast**<br>**FOR\*** | <br>**Broker Non-Votes** |
| 437632921 | 3758542 | 584550 | 99.0% | -0- |

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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:

---

| | | | | |
|:---|:---|:---|:---|:---|
| <br>**For** | <br>**Against** | <br>**Abstained** | **Percentage of Votes Cast**<br>**FOR\*** | <br>**Broker Non-Votes** |
| 188931812 | 121666547 | 1474133 | 60.5% | 129903521 |

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\*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.

**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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| | | |
|:---|:---|:---|
| Date: May 22, 2026 | **PLAINS ALL AMERICAN PIPELINE, L.P.** | **PLAINS ALL AMERICAN PIPELINE, L.P.** |
|  | By: | PAA GP LLC, its general partner |
|  | By: | Plains AAP, L.P., its sole member |
|  | By: | Plains All American GP LLC, its general partner |
|  | By: | /s/ Richard McGee |
|  |  | Name: Richard McGee |
|  |  | Title: Executive Vice President, General Counsel & Secretary |

---