PAA / Plains All American Pipeline, L.P. - Limited Partnership - Pemfailan SEC, Laporan Tahunan, Penyata Proksi

$1,250,000,000 Plains All American Pipeline, L.P. PAA Finance Corp. $700,000,000 4.700% Senior Notes due 2031 $550,000,000 5.600% Senior Notes due 2036

TABLE OF CONTENTS  Filed pursuant to Rule 424(b)(5)  Registration No. 333-281967 Prospectus supplement (To prospectus dated September 6, 2024) $1,250,000,000 Plains All American Pipeline, L.P. PAA Finance Corp. $700,000,000 4.700% Senior Notes due 2031 $550,000,000 5.600% Senior Notes due 2036 Plains All American Pipeline, L.P. and PAA Finance Corp. are offering $1.25 billion aggregate principal a

Security Type

Calculation of Filing Fee Tables S-3 PLAINS ALL AMERICAN PIPELINE LP Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to be Paid 1 Debt 4.

$           Plains All American Pipeline, L.P. PAA Finance Corp.         % Senior Notes due 2031         % Senior Notes due 2036

TABLE OF CONTENTS The information in this preliminary prospectus supplement is not complete and may be changed.

Final Term Sheet $700,000,000 4.700% Senior Notes due 2031 $550,000,000 5.600% Senior Notes due 2036

Filed Pursuant to Rule 433 Registration No. 333-281967 September 3, 2025 Final Term Sheet $700,000,000 4.700% Senior Notes due 2031 $550,000,000 5.600% Senior Notes due 2036 Issuers: Plains All American Pipeline, L.P. and PAA Finance Corp. Aggregate Principal Amount: $1,250,000,000 Principal Amount: $700,000,000 aggregate principal amount of 4.700% Senior Notes due 2031 (the “2031 Notes”) $550,000

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) – August 30, 2025 Plains All Ameri

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Plains to Acquire 55% Interest in EPIC Crude Holdings, LP Enhancing Wellhead to Water Strategy

Exhibit 99.1 Plains to Acquire 55% Interest in EPIC Crude Holdings, LP Enhancing Wellhead to Water Strategy HOUSTON – September 2, 2025 – Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) (collectively, “Plains”) announced today that a wholly owned subsidiary has entered into a definitive agreement to acquire from subsidiaries of Diamondback Energy, Inc. and Ki

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) – August 14, 2025 Plains All Ameri

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

have been omitted pursuant to Item 601(b)(2) of

EXHIBIT 2.1 SHARE PURCHASE AGREEMENT by and between PLAINS MIDSTREAM LUXEMBOURG S.À R.L. and KEYERA CORP. Dated as of June 17, 2025 [Certain Information has been excluded from this Exhibit because such information is both (i) not material and (ii) the type that the Registrant treats as private or confidential.] TABLE OF CONTENTS Page ARTICLE 1 DEFINITIONS 2 1.1 Definitions 2 1.2 Interpretations 2

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) — August 8, 2025 Plains All Americ

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) — August 8, 2025 Plains All American Pipeline, L.P. (Exact name of registrant as specified in its charter) Delaware 1-14569 76-0582150 (State or other jurisdiction of incorporation) (C

Plains All American Reports Second-Quarter 2025 Results

Exhibit 99.1 Plains All American Reports Second-Quarter 2025 Results Houston, TX – August 8, 2025 – Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) today reported solid second-quarter 2025 results and provided the following highlights: Second-Quarter Results •Reported net income attributable to PAA of $210 million and net cash provided by operating activities

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 1-14569 PLAINS ALL AMERICAN PIPELINE, L.P. (Exa

Plains All American Executes Definitive Agreements for $3.75 Billion Sale of NGL Business to Keyera

Exhibit 99.1 Plains All American Executes Definitive Agreements for $3.75 Billion Sale of NGL Business to Keyera HOUSTON – June 17, 2025 – Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) (collectively, “Plains”) announced today that it has executed definitive agreements with Keyera Corp. (TSX: KEY) (“Keyera”) pursuant to which Plains will sell substantially a

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

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 21, 2025 Plains All American

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 1-14569 PLAINS ALL AMERICAN PIPELINE, L.P. (Ex

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 9, 2025 Plains All American

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 9, 2025 Plains All American Pipeline, L.P. (Exact name of registrant as specified in its charter) Delaware 1-14569 76-0582150 (State or other jurisdiction of incorporation) (Comm

Plains All American Reports First-Quarter 2025 Results

Exhibit 99.1 Plains All American Reports First-Quarter 2025 Results Houston, TX – May 9, 2025 – Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) today reported first-quarter 2025 results and provided the following highlights: First-Quarter Results •Reported net income attributable to PAA of $443 million and net cash provided by operating activities of $639 mil

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Defin

Plains Announces Retirement of President Harry Pefanis and Assignment Updates to Board of Directors

Exhibit 99.1 Plains Announces Retirement of President Harry Pefanis and Assignment Updates to Board of Directors HOUSTON – March 26, 2025 – Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) announced today that Harry Pefanis will retire as President of Plains effective June 1, 2025. Willie Chiang, Chairman of the Board and CEO, will assume the role of President

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K

Table of Contents Index to Financial Statements UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

List of Subsidiaries of Plains All American Pipeline, L.P.

Exhibit 21.1 SUBSIDIARIES OF PLAINS ALL AMERICAN PIPELINE, L.P. (As of 12/31/2024) Subsidiary Jurisdiction of Organization Advantage Pipeline LLC Texas Advantage Pipeline Holdings LLC Delaware Advantage Pipeline Logistics LLC Texas Advantage Pipeline Management, LLC Texas Alpha Crude Holdings LLC Delaware Aurora Pipeline Company Ltd. Canada Bakersfield Crude Terminal LLC Delaware Cactus II Pipelin

Description of Our Securities.

Exhibit 4.17 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 As of December 31, 2024, Plains All American Pipeline L.P. has one class of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”): its common units representing limited partner interests, which are described in thi

olicy on Insider Trading

Exhibit 19.1 PLAINS GP HOLDINGS, L.P. PLAINS ALL AMERICAN PIPELINE, L.P. POLICY ON INSIDER TRADING THIS POLICY HAS BEEN ADOPTED BY THE BOARD OF DIRECTORS OF PAA GP HOLDINGS LLC. IT APPLIES TO ALL EMPLOYEES, CONSULTANTS, DIRECTORS AND OFFICERS OF PAA GP HOLDINGS LLC AND PLAINS ALL AMERICAN GP LLC. This policy should be read carefully by all directors, officers, consultants and employees1 of PAA GP

cy Regarding Special Trading Proc

Exhibit 19.2 PLAINS GP HOLDINGS, L.P. PLAINS ALL AMERICAN PIPELINE, L.P. POLICY REGARDING SPECIAL TRADING PROCEDURES THIS POLICY HAS BEEN ADOPTED BY THE BOARD OF DIRECTORS OF PAA GP HOLDINGS LLC This policy applies to all members of the board of directors (the “directors”) of PAA GP Holdings LLC (the “Company”), officers of the Company and of Plains All American GP LLC (“GP LLC”), as well as certa

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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) — February 7, 2025 Plains All American Pipeline, L.P. (Exact name of registrant as specified in its charter) Delaware 1-14569 76-0582150 (State or other jurisdiction of incorporation)

Plains All American Reports Fourth-Quarter and Full-Year 2024 Results; Provides Update on Efficient Growth Initiatives and Announces 2025 Guidance

Exhibit 99.1 Plains All American Reports Fourth-Quarter and Full-Year 2024 Results; Provides Update on Efficient Growth Initiatives and Announces 2025 Guidance Houston, TX – February 7, 2025 – Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) today reported fourth-quarter and full-year 2024 results, announced 2025 guidance and provided the following highlights:

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Other Events

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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) – January 13, 2025 Plains All American Pipeline, L.

Underwriting Agreement dated January 13, 2025 by and among Plains All American Pipeline, L.P., PAA Finance Corp. and J.P. Morgan Securities LLC, BMO Capital Markets Corp., Mizuho Securities USA LLC and Scotia Capital (USA) Inc., as representatives of the several underwriters named therein.

Exhibit 1.1 PLAINS ALL AMERICAN PIPELINE, L.P. PAA FINANCE CORP. $1,000,000,000 5.950% Senior Notes due 2035 UNDERWRITING AGREEMENT January 13, 2025 J.P. Morgan Securities LLC BMO Capital Markets Corp. Mizuho Securities USA LLC Scotia Capital (USA) Inc. As Representatives of the several Underwriters J.P. Morgan Securities LLC 383 Madison Avenue New York, New York 10179 Ladies and Gentlemen: Plains

Thirty-Fourth Supplemental Indenture (5.950% Senior Notes due 2035) dated January 15, 2025, by and among Plains All American Pipeline, L.P., PAA Finance Corp. and U.S. Bank Trust Company, National Association, as trustee (incorporated by reference to Exhibit 4.1 to our Current Report on Form 8-K filed January 15, 2025).

Exhibit 4.1 PLAINS ALL AMERICAN PIPELINE, L.P. PAA FINANCE CORP. as Issuers $1,000,000,000 5.950% SENIOR NOTES DUE 2035 THIRTY-FOURTH SUPPLEMENTAL INDENTURE Dated as of January 15, 2025 U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION as Trustee TABLE OF CONTENTS ARTICLE I 1 Section 1.01. Establishment 1 ARTICLE II DEFINITIONS AND INCORPORATION BY REFERENCE 2 Section 2.01. Definitions 2 Section 2.02.

Joint Book-Running Managers

TABLE OF CONTENTS  Filed pursuant to Rule 424(b)(5)  Registration No. 333-281967 Prospectus supplement (To prospectus dated September 6, 2024) $1,000,000,000 Plains All American Pipeline, L.P. PAA Finance Corp. 5.950% Senior Notes due 2035 Plains All American Pipeline, L.P. and PAA Finance Corp. are offering $1 billion aggregate principal amount of 5.950% Senior Notes due 2035 (the “Notes”). We wi

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 PLAINS ALL AMERICAN PIPELINE LP Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to be Paid 1 Debt 5.

Final Term Sheet $1,000,000,000 5.950% Senior Notes due 2035

Filed Pursuant to Rule 433 Registration No. 333-281967 January 13, 2025 Final Term Sheet $1,000,000,000 5.950% Senior Notes due 2035 Issuers: Plains All American Pipeline, L.P. and PAA Finance Corp. Ratings*: Moody’s: Baa2 (stable outlook) S&P: BBB (stable outlook) Fitch: BBB (stable outlook) Security Type: Senior unsecured Legal Format: SEC-registered Pricing Date: January 13, 2025 Settlement Dat

Joint Book-Running Managers

TABLE OF CONTENTS The information in this preliminary prospectus supplement is not complete and may be changed.

Plains All American Announces Bolt-on Acquisitions, Capital Structure Optimization & Distribution Increase

Exhibit 99.1 Plains All American Announces Bolt-on Acquisitions, Capital Structure Optimization & Distribution Increase HOUSTON – January 7, 2025 – Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) (collectively, “Plains”) announced today three bolt-on acquisitions for an aggregate cash consideration of approximately $670 million net to Plains, the purchase of

Financial Statements and Exhibits, Other Events

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Regulation FD Disclosure

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

PAA / Plains All American Pipeline, L.P. - Limited Partnership / ALPS ADVISORS INC Passive Investment

SC 13G/A 1 fp0091014-2sc13ga.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 8)* Plains All American Pipeline LP (Name of Issuer) Common Units (Title of Class of Securities) 726503105 (CUSIP Number) September 30, 2024 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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) — November 8, 2024 Plains All American Pipeline, L.P. (Exact name of registrant as specified in its charter) Delaware 1-14569 76-0582150 (State or other jurisdiction of incorporation)

Form of LTIP Grant Letter dated August 15, 2024 (Named Executive Officers)

Exhibit 10.3 2024 Regular Annual LTIP Grant Section 16 Officers August 15, 2024 «Officer Name» «Address» Re: Grant of Phantom Units Dear «Salutation»: I am pleased to inform you that, subject to the terms hereof, you have been granted a target number of Phantom Units equal to «LTIPGrant» as of the above date pursuant to the Company’s «LTIPPlan» Long-Term Incentive Plan (the “Plan”). In addition, i

Plains All American Reports Third-Quarter 2024 Results

Exhibit 99.1 Plains All American Reports Third-Quarter 2024 Results Houston, TX – November 8, 2024 – Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) today reported third-quarter 2024 results. Third-Quarter Results •Reported net income attributable to PAA of $220 million and net cash provided by operating activities of $692 million •Delivered solid Adjusted EB

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 1-14569 PLAINS ALL AMERICAN PIPELINE, L.P.

Form of LTIP Grant Letter dated August 15, 2024 (Directors)

Exhibit 10.4 2024 ANNUAL DIRECTOR GRANT August 15, 2024 «FirstName» «LastName» «Company» «Address» «City», «State» «Zip» Re: Grant of Phantom Class A Shares Dear «Salutation»: I am pleased to inform you that you have been granted 7,650 Phantom Class A Shares as of the above date pursuant to the Plains GP Holdings, L.P. Long-Term Incentive Plan (the “Plan”). In tandem with each Phantom Class A Shar

Plains All American GP LLC, General Partner of Plains AAP, L.P., the Sole Member of PAA GP LLC, the General Partner of Plains All American Pipeline, L.P. 333 Clay Street, Suite 1600 (77002) § P.O. Box 4648 § Houston, Texas 77210-4648 § 713-646-4100

September 17, 2024 Via EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F. Street, NE Washington, DC 20549 Re: Request for Acceleration of Effectiveness of Registration Statement on Form S-3 (File No. 333-281968) of Plains All American Pipeline, L.P. (the “Registrant”) Ladies and Gentlemen: On behalf of the Registrant, and pursuant to Rule 461 promulgated under the

Form T-1 Statement of Eligibility and Qualification under the Trust Indenture Act of 1939 of the trustee under the Senior Indenture

Exhibit 25.1 securities and exchange commission Washington, D.C. 20549 FORM T-1 Statement of Eligibility Under The Trust Indenture Act of 1939 of a Corporation Designated to Act as Trustee Check if an Application to Determine Eligibility of a Trustee Pursuant to Section 305(b)(2) ¨ U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION (Exact name of Trustee as specified in its charter) 91-1821036 I.R.S. E

As filed with the Securities and Exchange Commission on September 6, 2024

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on September 6, 2024 Registration No.

As filed with the Securities and Exchange Commission on September 6, 2024

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on September 6, 2024 Registration No.

Filing Fee Table

Calculation of Filing Fee Tables S-3 PLAINS ALL AMERICAN PIPELINE LP Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Eff

Form T-1 Statement of Eligibility and Qualification under the Trust Indenture Act of 1939 of the trustee under the Subordinated Indenture

Exhibit 25.2 securities and exchange commission Washington, D.C. 20549 FORM T-1 Statement of Eligibility Under The Trust Indenture Act of 1939 of a Corporation Designated to Act as Trustee Check if an Application to Determine Eligibility of a Trustee Pursuant to Section 305(b)(2) ¨ U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION (Exact name of Trustee as specified in its charter) 91-1821036 I.R.S. E

Filing Fee Table

Calculation of Filing Fee Tables S-3 PLAINS ALL AMERICAN PIPELINE LP Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to be Paid 1 Equity Common units representing limited partner interests 457(r) 0.

Form T-1 Statement of Eligibility and Qualification under the Trust Indenture Act of 1939 of the trustee under the Subordinated Indenture

Exhibit 25.2 securities and exchange commission Washington, D.C. 20549 FORM T-1 Statement of Eligibility Under The Trust Indenture Act of 1939 of a Corporation Designated to Act as Trustee Check if an Application to Determine Eligibility of a Trustee Pursuant to Section 305(b)(2) ¨ U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION (Exact name of Trustee as specified in its charter) 91-1821036 I.R.S. E

Form T-1 Statement of Eligibility and Qualification under the Trust Indenture Act of 1939 of the trustee under the Senior Indenture

Exhibit 25.1 securities and exchange commission Washington, D.C. 20549 FORM T-1 Statement of Eligibility Under The Trust Indenture Act of 1939 of a Corporation Designated to Act as Trustee Check if an Application to Determine Eligibility of a Trustee Pursuant to Section 305(b)(2) ¨ U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION (Exact name of Trustee as specified in its charter) 91-1821036 I.R.S. E

Second Amendment to Fourth Amended and Restated Credit Agreement dated as of August 19, 2024, among Plains Marketing, L.P. and Plains Midstream Canada ULC, as Borrowers; Plains All American Pipeline, L.P., 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 (incorporated by reference to Exhibit 10.2 to our Current Report on Form 8-K filed August 22, 2024).

Exhibit 10.2 Execution Copy SECOND AMENDMENT TO FOURTH AMENDED AND RESTATED CREDIT AGREEMENT THIS SECOND AMENDMENT TO FOURTH AMENDED AND RESTATED CREDIT AGREEMENT (this “Amendment”) dated as of the 19th day of August, 2024, is by and among PLAINS MARKETING, L.P., a Texas limited partnership (the “Company”), PLAINS MIDSTREAM CANADA ULC, a British Columbia unlimited liability company (“PMCULC”, and,

Second Amendment to Credit Agreement dated as of August 19, 2024, among Plains All American Pipeline, L.P. and Plains Midstream Canada ULC, as Borrowers; certain subsidiaries of Plains All American Pipeline, L.P. 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 (incorporated by reference to Exhibit 10.1 to our Current Report on Form 8-K filed August 22, 2024).

Exhibit 10.1 Execution Copy SECOND AMENDMENT TO CREDIT AGREEMENT THIS SECOND AMENDMENT TO CREDIT AGREEMENT (this “Amendment”) dated as of the 19th day of August, 2024, is by and among PLAINS ALL AMERICAN PIPELINE, L.P. (the “Company”), PLAINS MIDSTREAM CANADA ULC, a British Columbia unlimited liability company (“PMCULC”, and, together with the Company, the “Borrowers” and each individually, a “Bor

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 1-14569 PLAINS ALL AMERICAN PIPELINE, L.P. (Exa

Plains All American Reports Second-Quarter 2024 Results & Raises 2024 Guidance

Exhibit 99.1 Plains All American Reports Second-Quarter 2024 Results & Raises 2024 Guidance Houston, TX – August 2, 2024 – Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) today reported strong second-quarter 2024 results and raised full-year 2024 Adjusted EBITDA guidance. Second-Quarter Results •Reported net income attributable to PAA of $250 million and net

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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) — August 2, 2024 Plains All American Pipeline, L.P. (Exact name of registrant as specified in its charter) Delaware 1-14569 76-0582150 (State or other jurisdiction of incorporation) (C

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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) – June 27, 2024 Plains All American Pipeline, L.

Thirty-Third Supplemental Indenture (5.70% Senior Notes due 2034) dated June 27, 2024, by and among Plains All American Pipeline, L.P., PAA Finance Corp. and U.S. Bank Trust Company, National Association, as trustee (incorporated by reference to Exhibit 4.1 to our Current Report on Form 8-K filed June 27, 2024).

Exhibit 4.1 PLAINS ALL AMERICAN PIPELINE, L.P. PAA FINANCE CORP. as Issuers $650,000,000 5.700% SENIOR NOTES DUE 2034 THIRTY-THIRD SUPPLEMENTAL INDENTURE Dated as of June 27, 2024 U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION as Trustee TABLE OF CONTENTS ARTICLE I 1 Section 1.01. Establishment 1 ARTICLE II DEFINITIONS AND INCORPORATION BY REFERENCE 2 Section 2.01. Definitions 2 Section 2.02. Other

Calculation of Filing Fee Tables (Form Type) Plains All American Pipeline LP PAA Finance Corp. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities

Exhibit 107 Calculation of Filing Fee Tables 424B5 (Form Type) Plains All American Pipeline LP PAA Finance Corp.

$650,000,000 Plains All American Pipeline, L.P. PAA Finance Corp.     5.700% Senior Notes due 2034

TABLE OF CONTENTS  Filed pursuant to Rule 424(b)(5)  Registration No. 333-259387 PROSPECTUS SUPPLEMENT (To prospectus dated September 8, 2021) $650,000,000 Plains All American Pipeline, L.P. PAA Finance Corp.     5.700% Senior Notes due 2034 Plains All American Pipeline, L.P. and PAA Finance Corp. are offering $650 million aggregate principal amount of 5.700% Senior Notes due 2034 (the “Notes”). W

Underwriting Agreement dated June 17, 2024 by and among Plains All American Pipeline, L.P., PAA Finance Corp., and Citigroup Global Markets Inc., MUFG Securities Americas Inc., SMBC Nikko Securities America, Inc. and Truist Securities, Inc. as representatives of the several underwriters named therein.

Exhibit 1.1 PLAINS ALL AMERICAN PIPELINE, L.P. PAA FINANCE CORP. $650,000,000 5.700% Senior Notes due 2034 UNDERWRITING AGREEMENT June 17, 2024 Citigroup Global Markets Inc. MUFG Securities Americas Inc. SMBC Nikko Securities America, Inc. Truist Securities, Inc. As Representatives of the several Underwriters c/o Citigroup Global Markets Inc. 388 Greenwich Street New York, NY 10013 Ladies and Gent

Financial Statements and Exhibits, Other Events

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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) – June 17, 2024 Plains All American Pipeline, L.

Final Term Sheet $650,000,000 5.700% Senior Notes due 2034

Filed Pursuant to Rule 433 Registration No. 333-259387 June 17, 2024 Final Term Sheet $650,000,000 5.700% Senior Notes due 2034 Issuers: Plains All American Pipeline, L.P. and PAA Finance Corp. Ratings*: Moody's: Baa3 (positive outlook) S&P: BBB (stable outlook) Fitch: BBB (stable outlook) Security Type: Senior unsecured Legal Format: SEC-registered Pricing Date: June 17, 2024 Settlement Date (T+7

SUBJECT TO COMPLETION, DATED JUNE 17, 2024

TABLE OF CONTENTS The information in this preliminary prospectus supplement is not complete and may be changed.

Submission of Matters to a Vote of Security Holders

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 1-14569 PLAINS ALL AMERICAN PIPELINE, L.P. (Ex

Plains All American Reports First-Quarter 2024 Results Provides Update on Permian Long-Haul Contracting & Announces Bolt-on Acquisitions

Exhibit 99.1 Plains All American Reports First-Quarter 2024 Results Provides Update on Permian Long-Haul Contracting & Announces Bolt-on Acquisitions Houston, TX – May 3, 2024 – Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) today reported first-quarter 2024 results and reaffirmed full-year 2024 Adjusted EBITDA guidance. Plains also provided updates on Permi

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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 3, 2024 Plains All American Pipeline, L.P. (Exact name of registrant as specified in its charter) Delaware 1-14569 76-0582150 (State or other jurisdiction of incorporation) (Comm

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule

List of Subsidiaries of Plains All American Pipeline, L.P.

Exhibit 21.1 SUBSIDIARIES OF PLAINS ALL AMERICAN PIPELINE, L.P. (As of 12/31/2023) Subsidiary Jurisdiction of Organization Advantage Pipeline LLC Texas Advantage Pipeline Holdings LLC Delaware Advantage Pipeline Logistics LLC Texas Advantage Pipeline Management, LLC Texas Aurora Pipeline Company Ltd. Canada Bakersfield Crude Terminal LLC Delaware Cactus II Pipeline LLC Delaware Capline Pipeline Co

Exhibit 4.16

Exhibit 4.16 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 As of December 31, 2023, Plains All American Pipeline L.P. has one class of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”): its common units representing limited partner interests, which are described in thi

Amended and Restated Clawback Policy

Exhibit 97.1 Amended and Restated Clawback Policy Plains All American Pipeline, L.P. Plains GP Holdings, L.P. 1.Purpose. This Amended and Restated Clawback Policy (“Policy) has been adopted by the Board of Directors (“Board”) of PAA GP Holdings LLC (the “Company”) to further align the interests of executive officers of the Company with the interests of the unitholders of Plains All American Pipeli

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K

Table of Contents Index to Financial Statements UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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) — February 9, 2024 Plains All American Pipeline, L.P. (Exact name of registrant as specified in its charter) Delaware 1-14569 76-0582150 (State or other jurisdiction of incorporation)

Plains All American Reports Fourth-Quarter and Full-Year 2023 Results; Announces 2024 Guidance

Exhibit 99.1 Plains All American Reports Fourth-Quarter and Full-Year 2023 Results; Announces 2024 Guidance Houston, TX – February 9, 2024 – Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) today reported fourth-quarter and full-year 2023 results, announced 2024 guidance and provided the following highlights: 2023 Highlights •Fourth-quarter and full-year 2023

PAA / Plains All American Pipeline, L.P. - Limited Partnership / ALPS ADVISORS INC Passive Investment

SC 13G/A 1 fp0087039-7sc13ga.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 7)* Plains All American Pipeline, L.P. (Name of Issuer) Common Units (Title of Class of Securities) 726503105 (CUSIP Number) December 31, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box

Regulation FD Disclosure

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 1-14569 PLAINS ALL AMERICAN PIPELINE, L.P.

Form of LTIP Grant Letter dated August 17, 2023 (Named Executive Officers)

Exhibit 10.1 2023 Regular Annual LTIP Grant Section 16 Officers August 17, 2023 «Name» «Address» Re: Grant of Phantom Units Dear «Name»: I am pleased to inform you that, subject to the terms hereof, you have been granted a target number of Phantom Units equal to «Amount» as of the above date pursuant to the Company’s «LTIPPlan» Long-Term Incentive Plan (the “Plan”). In addition, in tandem with eac

Form of LTIP Grant Letter dated August 17, 2023 (Directors)

Exhibit 10.2 2023 ANNUAL DIRECTOR GRANT August 17, 2023 Re: Grant of Phantom Class A Shares Dear : I am pleased to inform you that you have been granted 8,050 Phantom Class A Shares as of the above date pursuant to the Plains GP Holdings, L.P. Long-Term Incentive Plan (the “Plan”). In tandem with each Phantom Class A Share granted hereby you have been granted a distribution equivalent right (a “DE

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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) — November 3, 2023 Plains All American Pipeline, L.P. (Exact name of registrant as specified in its charter) Delaware 1-14569 76-0582150 (State or other jurisdiction of incorporation)

Plains All American Reports Third-Quarter 2023 Results & Raises 2023 Guidance Announces Capital Allocation Updates & Permian Bolt-On Acquisitions

Exhibit 99.1 Plains All American Reports Third-Quarter 2023 Results & Raises 2023 Guidance Announces Capital Allocation Updates & Permian Bolt-On Acquisitions Houston, TX – November 3, 2023 – Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) today reported third-quarter 2023 results and provided updated 2023 guidance as highlighted below. Plains also provided a

3,363,477 Common Units Representing Limited Partner Interests

Filed Pursuant to Rule 424(b)(7) Registration No. 333-267725 PROSPECTUS SUPPLEMENT (TO PROSPECTUS DATED OCTOBER 18, 2022) 3,363,477 Common Units Representing Limited Partner Interests This prospectus supplement updates and amends certain information contained in the prospectus dated October 18, 2022 (the “Prospectus”), covering the resale by selling unitholders of up to 3,363,477 ccommon units rep

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Amendment No. 3 dated August 17, 2023 to the Eighth Amended and Restated Limited Partnership Agreement of Plains AAP, L.P. (incorporated by reference to Exhibit 3.1 to our Current Report on Form 8-K filed August 21, 2023).

Exhibit 3.1 AMENDMENT NO. 3 TO THE EIGHTH AMENDED AND RESTATED LIMITED PARTNERSHIP AGREEMENT OF PLAINS AAP, L.P. This Amendment No. 3 (this “Amendment”) to the Eighth Amended and Restated Limited Partnership Agreement of Plains AAP, L.P., a Delaware limited partnership (the “Company”), dated as of November 15, 2016 (as amended by Amendment No. 1 dated September 26, 2018 and Amendment No. 2 dated M

Regulation FD Disclosure

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 1-14569 PLAINS ALL AMERICAN PIPELINE, L.P. (Exa

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) — August 4, 2023 Plains All Americ

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) — August 4, 2023 Plains All American Pipeline, L.P. (Exact name of registrant as specified in its charter) Delaware 1-14569 76-0582150 (State or other jurisdiction of incorporation) (C

Plains All American Reports Second-Quarter 2023 Results and Provides Updated 2023 Guidance Announces Permian Bolt-On Acquisition and NGL Segment Updates

Exhibit 99.1 Plains All American Reports Second-Quarter 2023 Results and Provides Updated 2023 Guidance Announces Permian Bolt-On Acquisition and NGL Segment Updates Houston, TX – August 4, 2023 – Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) today reported second-quarter 2023 results and provided updated 2023 guidance as highlighted below. Plains also anno

Submission of Matters to a Vote of Security Holders

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 1-14569 PLAINS ALL AMERICAN PIPELINE, L.P. (Ex

Plains All American Reports First-Quarter 2023 Results; Reaffirms 2023 Guidance

Exhibit 99.1 Plains All American Reports First-Quarter 2023 Results; Reaffirms 2023 Guidance Houston, TX – May 5, 2023 – Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) today reported first-quarter 2023 results and reaffirmed 2023 guidance as highlighted below: First-Quarter Results •Reported Net income attributable to PAA of $422 million and Net cash provide

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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 5, 2023 Plains All American Pipeline, L.P. (Exact name of registrant as specified in its charter) Delaware 1-14569 76-0582150 (State or other jurisdiction of incorporation) (Comm

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K

Table of Contents Index to Financial Statements UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

List of Subsidiaries of Plains All American Pipeline, L.P.

Exhibit 21.1 SUBSIDIARIES OF PLAINS ALL AMERICAN PIPELINE, L.P. (As of 12/31/2022) Subsidiary Jurisdiction of Organization Advantage Pipeline LLC Texas Advantage Pipeline Holdings LLC Delaware Advantage Pipeline Logistics LLC Texas Advantage Pipeline Management, LLC Texas Aurora Pipeline Company Ltd. Canada Bakersfield Crude Terminal LLC Delaware Cactus II Pipeline LLC Delaware Capline Pipeline Co

Description of Our Securities (incorporated by reference to Exhibit 4.18 to our Annual Report on Form 10-K for the year ended December 31, 2022).

Exhibit 4.18 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 As of December 31, 2022, Plains All American Pipeline L.P. has one class of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”): its common units representing limited partner interests, which are described in thi

Regulation FD Disclosure

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

PAA / Plains All American Pipeline, L.P. / ALPS ADVISORS INC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 6)* Plains All American Pipeline, L.P. (Name of Issuer) Common Units (Title of Class of Securities) 726503105 (CUSIP Number) December 31, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to

Plains All American Reports Fourth-Quarter and Full-Year 2022 Results; Announces 2023 Guidance

Exhibit 99.1 Plains All American Reports Fourth-Quarter and Full-Year 2022 Results; Announces 2023 Guidance (Houston — February 8, 2023) Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) today reported fourth-quarter and full-year 2022 results, announced 2023 guidance and provided the following highlights: 2022 Highlights •Fourth-quarter and full-year 2022 Net

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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) — February 8, 2023 Plains All American Pipeline, L.P. (Exact name of registrant as specified in its charter) Delaware 1-14569 76-0582150 (State or other jurisdiction of incorporation)

Regulation FD Disclosure

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Regulation FD Disclosure

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 1-14569 PLAINS ALL AMERICAN PIPELINE, L.P.

Form of LTIP Grant Letter dated August 18, 2022 (Directors) (incorporated by reference to Exhibit 10.5 to our Quarterly Report on Form 10-Q for the quarter ended September 30, 2022).

Exhibit 10.5 2022 ANNUAL DIRECTOR GRANT August 18, 2022 [Name] [Address] Re: Grant of Phantom Class A Shares Dear [Name]: I am pleased to inform you that you have been granted 11,400 Phantom Class A Shares as of the above date pursuant to the Plains GP Holdings, L.P. Long-Term Incentive Plan (the ?Plan?). In tandem with each Phantom Class A Share granted hereby you have been granted a distribution

Form of LTIP Grant Letter dated August 18, 2022 (Named Executive Officers) (incorporated by reference to Exhibit 10.4 to our Quarterly Report on Form 10-Q for the quarter ended September 30, 2022).

Exhibit 10.4 2022 Regular Annual LTIP Grant Section 16 Officers August 18, 2022 ?Section 16 Officer? ?Address? Re: Grant of Phantom Units Dear ?Salutation?: I am pleased to inform you that, subject to the terms hereof, you have been granted a target number of Phantom Units equal to ?LTIPGrant? as of the above date pursuant to the Company?s ?LTIPPlan? Long-Term Incentive Plan (the ?Plan?). In addit

Plains All American Reports Third-Quarter 2022 Results, Increases 2022 Guidance and Announces Multi-Year Capital Allocation Framework

Exhibit 99.1 Plains All American Reports Third-Quarter 2022 Results, Increases 2022 Guidance and Announces Multi-Year Capital Allocation Framework Houston, TX ? November 2, 2022 ? Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) today reported third-quarter 2022 results and provided the following highlights and increase to 2022 guidance: ?Third-quarter Net inc

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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) — November 2, 2022 Plains All American Pipeline, L.P. (Exact name of registrant as specified in its charter) Delaware 1-14569 76-0582150 (State or other jurisdiction of incorporation)

Plains All American GP LLC, General Partner of Plains AAP, L.P., the Sole Member of PAA GP LLC, the General Partner of Plains All American Pipeline, L.P. 333 Clay Street, Suite 1600 (77002) ▪ P.O. Box 4648 ▪ Houston, Texas 77210-4648 ▪ 713-646-4100

October 14, 2022 Via EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F. Street, NE Washington, DC 20549 Re: Request for Acceleration of Effectiveness of Registration Statement on Form S-3 (File No. 333-267725) of Plains All American Pipeline, L.P. (the ?Registrant?) Ladies and Gentlemen: On behalf of the Registrant, and pursuant to Rule 461 promulgated under the S

As filed with the Securities and Exchange Commission on October 4, 2022

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on October 4, 2022 Registration No.

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) Plains All American Pipeline, L.

Regulation FD Disclosure

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

First Amendment to Credit Agreement dated as of August 22, 2022, among Plains All American Pipeline, L.P. and Plains Midstream Canada ULC, as Borrowers; certain subsidiaries of Plains All American Pipeline, L.P. 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 (incorporated by reference to Exhibit 10.1 to our Current Report on Form 8-K filed August 25, 2022).

Exhibit 10.1 Execution Copy FIRST AMENDMENT TO CREDIT AGREEMENT THIS FIRST AMENDMENT TO CREDIT AGREEMENT (this ?Amendment?) dated as of the 22nd day of August, 2022, is by and among PLAINS ALL AMERICAN PIPELINE, L.P. (the ?Company?), PLAINS MIDSTREAM CANADA ULC, a British Columbia unlimited liability company (?PMCULC?, and, together with the Company, the ?Borrowers? and each individually, a ?Borro

First Amendment to Fourth Amended and Restated Credit Agreement dated as of August 22, 2022, among Plains Marketing, L.P. and Plains Midstream Canada ULC, as Borrowers; Plains All American Pipeline, L.P., 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 (incorporated by reference to Exhibit 10.2 to our Current Report on Form 8-K filed August 25, 2022).

Exhibit 10.2 Execution Copy FIRST AMENDMENT TO FOURTH AMENDED AND RESTATED CREDIT AGREEMENT THIS FIRST AMENDMENT TO FOURTH AMENDED AND RESTATED CREDIT AGREEMENT (this ?Amendment?) dated as of the 22nd day of August, 2022, is by and among PLAINS MARKETING, L.P., a Texas limited partnership (the ?Company?), PLAINS MIDSTREAM CANADA ULC, a British Columbia unlimited liability company (?PMCULC?, and, t

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Regulation FD Disclosure

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 1-14569 PLAINS ALL AMERICAN PIPELINE, L.P. (Exa

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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) ? August 3, 2022 Plains All American Pipeline, L.P. (Exact name of registrant as specified in its charter) Delaware 1-14569 76-0582150 (State or other jurisdiction of incorporation) (C

Plains All American Reports Second-Quarter 2022 Results

Exhibit 99.1 Plains All American Reports Second-Quarter 2022 Results Houston, TX ? August 3, 2022 ? Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) today reported second-quarter 2022 results and provided the following updates: ?Second-quarter Net income attributable to PAA of $203 million and Net cash provided by operating activities of $792 million ?Second-q

Plains All American Pipeline, L.P. and Plains GP Holdings Announce Appointment of New Board Member

Exhibit 99.1 Plains All American Pipeline, L.P. and Plains GP Holdings Announce Appointment of New Board Member HOUSTON, July 27, 2022 - Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) today announced that Ellen R. DeSanctis has been appointed, effective August 15, 2022, as an independent member of the Board of Directors of PAA GP Holdings LLC (?GP Holdings?)

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Regulation FD Disclosure

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Submission of Matters to a Vote of Security Holders

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Other Events

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Regulation FD Disclosure

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Form of Amended and Restated Special Retention LTIP Grant Letter Dated February 24, 2022 (incorporated by reference to Exhibit 10.1 to our Quarterly Report on Form 10-Q for the quarter ended March 31, 2022).

Exhibit 10.1 AMENDED AND RESTATED SPECIAL RETENTION LTIP GRANT ? US Section 16 Officer February 24, 2022 (Replaces and supersedes letter dated November 21, 2019) [Name] [Address] Re: Amended and Restated Grant of Phantom Units Dear [Name]: This letter replaces and supersedes the original grant letter dated November 21, 2019, pursuant to which you received an award of [?] Phantom Units under the Co

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 1-14569 PLAINS ALL AMERICAN PIPELINE, L.P. (Ex

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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 4, 2022 Plains All American Pipeline, L.P. (Exact name of registrant as specified in its charter) Delaware 1-14569 76-0582150 (State or other jurisdiction of incorporation) (Comm

Plains All American Reports First-Quarter 2022 Results

Exhibit 99.1 Plains All American Reports First-Quarter 2022 Results Houston, TX ? May 4, 2022? Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) today reported first-quarter 2022 results and provided the following updates: ?Reported first-quarter Net income attributable to PAA of $187 million and Net cash provided by operating activities of $340 million ?Report

proxy statement, on Schedule 14A, filed with the SEC on April 14, 2022;

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549? SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ???) Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? ? Confidential, for Use of the Commission Only (as permitted by R

List of Subsidiaries of Plains All American Pipeline, L.P.

Exhibit 21.1 SUBSIDIARIES OF PLAINS ALL AMERICAN PIPELINE, L.P. (As of 12/31/2021) Subsidiary Jurisdiction of Organization Aurora Pipeline Company Ltd. Canada Bakersfield Crude Terminal LLC Delaware Cactus II Pipeline LLC Delaware Capline Pipeline Company LLC Delaware Eagle Ford Crude Terminal LLC Delaware FM Midstream Holdings LLC Delaware FM Gathering LLC Delaware Niobrara Crude Terminal LLC Del

Amendment No. 1 to Third Amended and Restated Employment Agreement dated effective December 31, 2021 between Plains All American GP LLC and Greg L. Armstrong (incorporated by reference to Exhibit 10.12 to our Annual Report on Form 10-K for the year ended December 31, 2021).

Exhibit 10.12 FIRST AMENDMENT TO THIRD AMENDED AND RESTATED EMPLOYMENT AGREEMENT This First Amendment dated effective December 31, 2021 (?Amendment No. 1?) to the Third Amended and Restated Employment Agreement (the ?Agreement?), effective January 1, 2020, is by and between Plains All American GP LLC (the ?Company?) and Greg L. Armstrong (?Armstrong? or the ?Employee?). Capitalized terms that are

Description of Our Securities (incorporated by reference to Exhibit 4.19 to our Annual Report on Form 10-K for the year ended December 31, 2021).

Exhibit 4.19 DESCRIPTION OF THE REGISTRANT?S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 As of December 31, 2021, Plains All American Pipeline L.P. has one class of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended (the ?Exchange Act?): its common units representing limited partner interests, which are described in thi

Fourth Amended and Restated Limited Liability Company Agreement of PAA GP Holdings LLC dated effective as of August 19, 2021 (incorporated by reference to Exhibit 3.21 to our Annual Report on Form 10-K for the year ended December 31, 2021).

Execution Version FOURTH AMENDED AND RESTATED LIMITED LIABILITY COMPANY AGREEMENT OF PAA GP HOLDINGS LLC effective as of August 19, 2021 Exhibit 3.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K

Table of Contents Index to Financial Statements UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Regulation FD Disclosure

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Plains All American Reports Fourth-Quarter and Full-Year 2021 Results

Exhibit 99.1 Plains All American Reports Fourth-Quarter and Full-Year 2021 Results (Houston ? February 9, 2022) Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) today reported fourth-quarter and full-year 2021 results and provided the following updates: Summary Highlights ?Reported fourth-quarter and full-year 2021 Net income attributable to PAA of $450 millio

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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) ? February 9, 2022 Plains All American Pipeline, L.P. (Exact name of registrant as specified in its charter) Delaware 1-14569 76-0582150 (State or other jurisdiction of incorporation)

PAA / Plains All American Pipeline, L.P. / ALPS ADVISORS INC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 5)* Plains All American Pipeline, L.P. (Name of Issuer) Common Units (Title of Class of Securities) 726503105 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to

Oryx Midstream Holdings LLC and Subsidiaries Condensed Consolidated Financial Report As of and for the Six Months Ended June 30, 2021 Exhibit 99.2 C O N T E N T S Page Condensed Consolidated Financial Statements Condensed Consolidated Balance Sheet .

Oryx Midstream Holdings LLC and Subsidiaries Condensed Consolidated Financial Report As of and for the Six Months Ended June 30, 2021 Exhibit 99.

Oryx Midstream Holdings LLC (formerly Lower Cadence Holdings LLC) and Subsidiaries Consolidated Financial Report As of December 31, 2020 and 2019, and for the Year Ended December 31, 2020, and the Period from March 25, 2019 (Date of Inception) to Dec

Oryx Midstream Holdings LLC (formerly Lower Cadence Holdings LLC) and Subsidiaries Consolidated Financial Report As of December 31, 2020 and 2019, and for the Year Ended December 31, 2020, and the Period from March 25, 2019 (Date of Inception) to December 31, 2019 Exhibit 99.

PLAINS ALL AMERICAN PIPELINE, L.P. INDEX TO UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL STATEMENTS

Exhibit 99.3 Plains All American Pipeline, L.P. Unaudited pro forma condensed combined financial statements of Plains All American Pipeline, L.P. as of and for the six months ended June 30, 2021 and for the year ended December 31, 2020, including the notes thereto. PLAINS ALL AMERICAN PIPELINE, L.P. INDEX TO UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL STATEMENTS Introduction F-2 Unaudited Pro

Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) ? October 5, 2021 Plains All American Pipeline, L.P. (Exact name of registrant as specified in its charter) Delaware 1-14569 76-0582150 (State or other jurisdiction

Regulation FD Disclosure

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 1-14569 PLAINS ALL AMERICAN PIPELINE, L.P.

Form of LTIP Grant Letter dated August 19, 2021 (Named Executive Officers) (incorporated by reference to Exhibit 10.3 to our Quarterly Report on Form 10-Q for the quarter ended September 30, 2021).

Exhibit 10.3 2021 Regular Annual LTIP Grant Section 16 Officers August 19, 2021 ?Section 16 Officer? ?Address? Re: Grant of Phantom Units Dear ?Salutation?: I am pleased to inform you that, subject to the terms hereof, you have been granted a target number of Phantom Units equal to ?LTIPGrant? as of the above date pursuant to the Company?s ?LTIPPlan? Long-Term Incentive Plan (the ?Plan?). In addit

Form of LTIP Grant Letter dated August 19, 2021 (Directors) (incorporated by reference to Exhibit 10.4 to our Quarterly Report on Form 10-Q for the quarter ended September 30, 2021).

Exhibit 10.4 2021 ANNUAL DIRECTOR GRANT August 19, 2021 ?FirstName? ?LastName? ?Address? ?City?, ?State? ?Zip? Re: Grant of Phantom Class A Shares Dear ?Salutation?: I am pleased to inform you that you have been granted 11,900 Phantom Class A Shares as of the above date pursuant to the Plains GP Holdings, L.P. Long-Term Incentive Plan (the ?Plan?). In tandem with each Phantom Class A Share granted

Plains All American Reports Third-Quarter 2021 Results

EX-99.1 2 paa11022021exhibit991.htm EX-99.1 Exhibit 99.1 Plains All American Reports Third-Quarter 2021 Results Houston, TX – November 2, 2021– Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) today reported third-quarter 2021 results and provided the following updates: •Successfully completed formation of Plains Oryx Permian Basin strategic joint venture (clo

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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) ? November 2, 2021 Plains All American Pipeline, L.P. (Exact name of registrant as specified in its charter) Delaware 1-14569 76-0582150 (State or other jurisdiction of incorporation)

Regulation FD Disclosure, Financial Statements and Exhibits, Completion of Acquisition or Disposition of Assets

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Plains All American and Oryx Midstream Complete Formation of Permian Basin Joint Venture

Exhibit 99.1 Plains All American and Oryx Midstream Complete Formation of Permian Basin Joint Venture HOUSTON & MIDLAND, TX ? October 5, 2021 ? Plains All American (Nasdaq: PAA & PAGP) (?Plains?) and Oryx Midstream Holdings LLC (?Oryx?), a portfolio company of Stonepeak Infrastructure Partners, today announced that they have successfully completed the formation of their Permian Basin strategic joi

Plains All American Pipeline, L.P. 333 Clay Street, Suite 1600 Houston, Texas 77002 (713) 646-4100

Plains All American Pipeline, L.P. 333 Clay Street, Suite 1600 Houston, Texas 77002 (713) 646-4100 September 27, 2021 By EDGAR United States Securities and Exchange Commission Division of Corporation Finance Mail Stop 3561 100 F Street, N.E. Washington, D.C. 20549 Re: Request for Acceleration of Effectiveness of Registration Statement on Form S-3 (Registration No. 333-259390) of Plains All America

Form T-1 Statement of Eligibility and Qualification under the Trust Indenture Act of 1939 of the trustee under the Senior Indenture

Exhibit 25.1 securities and exchange commission Washington, D.C. 20549 FORM T-1 Statement of Eligibility Under The Trust Indenture Act of 1939 of a Corporation Designated to Act as Trustee Check if an Application to Determine Eligibility of a Trustee Pursuant to Section 305(b)(2) U.S. BANK NATIONAL ASSOCIATION (Exact name of Trustee as specified in its charter) 31-0841368 I.R.S. Employer Identific

As filed with the Securities and Exchange Commission on September 8, 2021

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on September 8, 2021 Registration No.

As filed with the Securities and Exchange Commission on September 8, 2021

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on September 8, 2021 Registration No.

Form T-1 Statement of Eligibility and Qualification under the Trust Indenture Act of 1939 of the trustee under the Subordinated Indenture

EX-25.2 6 tm2126983d2ex25-2.htm EXHIBIT 25.2 Exhibit 25.2 securities and exchange commission Washington, D.C. 20549 FORM T-1 Statement of Eligibility Under The Trust Indenture Act of 1939 of a Corporation Designated to Act as Trustee Check if an Application to Determine Eligibility of a Trustee Pursuant to Section 305(b)(2) U.S. BANK NATIONAL ASSOCIATION (Exact name of Trustee as specified in its

Form T-1 Statement of Eligibility and Qualification under the Trust Indenture Act of 1939 of the trustee under the Senior Indenture

EX-25.1 5 tm2126987d2ex25-1.htm EXHIBIT 25.1 Exhibit 25.1 securities and exchange commission Washington, D.C. 20549 FORM T-1 Statement of Eligibility Under The Trust Indenture Act of 1939 of a Corporation Designated to Act as Trustee Check if an Application to Determine Eligibility of a Trustee Pursuant to Section 305(b)(2) ¨ U.S. BANK NATIONAL ASSOCIATION (Exact name of Trustee as specified in it

Form T-1 Statement of Eligibility and Qualification under the Trust Indenture Act of 1939 of the trustee under the Subordinated Indenture

Exhibit 25.2 securities and exchange commission Washington, D.C. 20549 FORM T-1 Statement of Eligibility Under The Trust Indenture Act of 1939 of a Corporation Designated to Act as Trustee Check if an Application to Determine Eligibility of a Trustee Pursuant to Section 305(b)(2) ? U.S. BANK NATIONAL ASSOCIATION (Exact name of Trustee as specified in its charter) 31-0841368 I.R.S. Employer Identif

Plains All American Renews and Extends Credit Facilities

Exhibit 99.1 Plains All American Renews and Extends Credit Facilities HOUSTON, August 26, 2021 ? Plains All American Pipeline and Plains GP Holdings (Nasdaq: PAA & PAGP) (collectively, ?Plains?) today announced that PAA has renewed and extended its two credit facilities (the ?Facilities?). The renewed and extended Facilities have an aggregate initial borrowing capacity of $2.7 billion and initial

Credit Agreement dated as of August 20, 2021, among Plains All American Pipeline, L.P. and Plains Midstream Canada ULC, as Borrowers; certain subsidiaries of Plains All American Pipeline, L.P. 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 (incorporated by reference to Exhibit 10.1 to our Current Report on Form 8-K filed August 26, 2021).

Exhibit 10.1 EXECUTION VERSION Published Deal CUSIP Number: 726504AL7 Published Revolver CUSIP Number: 726504AM5 CREDIT AGREEMENT DATED AS OF AUGUST 20, 2021 among PLAINS ALL AMERICAN PIPELINE, L.P., PLAINS MIDSTREAM CANADA ULC and CERTAIN SUBSIDIARIES OF PLAINS ALL AMERICAN PIPELINE, L.P. From Time to Time Party Hereto as Borrowers, BANK OF AMERICA, N.A., as Administrative Agent and Swing Line Le

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) – August 20, 2021 Plains All Ameri

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Fourth Amended and Restated Credit Agreement dated as of August 20, 2021, among Plains Marketing, L.P. and Plains Midstream Canada ULC, as Borrowers; Plains All American Pipeline, L.P., 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 (incorporated by reference to Exhibit 10.2 to our Current Report on Form 8-K filed August 26, 2021).

Exhibit 10.2 EXECUTION VERSION Published Deal CUSIP Number: 72651GAE5 Published Revolver CUSIP Number: 72651GAF2 FOURTH AMENDED AND RESTATED CREDIT AGREEMENT DATED AS OF AUGUST 20, 2021 among PLAINS MARKETING, L.P. and PLAINS MIDSTREAM CANADA ULC, as Borrowers, PLAINS ALL AMERICAN PIPELINE, L.P., as Guarantor, BANK OF AMERICA, N.A., as Administrative Agent and Swing Line Lender, BANK OF AMERICA, N

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) — August 19, 2021 Plains All Ameri

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Plains All American Announces Governance Enhancement

Exhibit 99.1 Plains All American Announces Governance Enhancement HOUSTON, August 24, 2021 (GLOBE NEWSWIRE) ? Plains All American Pipeline, L.P. and Plains GP Holdings (Nasdaq: PAA & PAGP) (collectively, ?Plains?) today announced that its Board of Directors has approved amendments to the underlying governance arrangements for Plains that eliminate all previously negotiated ?director designation? r

Amendment No. 5 dated August 19, 2021 to the Third Amended and Restated Limited Liability Company Agreement of PAA GP Holdings LLC dated as of February 17, 2017.

Exhibit 3.1 Execution Copy AMENDMENT NO. 5 TO THE THIRD AMENDED AND RESTATED LIMITED LIABILITY COMPANY AGREEMENT OF PAA GP HOLDINGS LLC This Amendment No. 5 (this ?Amendment?) to the Third Amended and Restated Limited Liability Company Agreement of PAA GP Holdings LLC, a Delaware limited liability company (the ?Company?), dated as of February 16, 2017 (the ?LLC Agreement?), is hereby adopted on Au

Regulation FD Disclosure

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 1-14569 PLAINS ALL AMERICAN PIPELINE, L.P. (Exa

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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) ? August 3, 2021 Plains All American Pipeline, L.P. (Exact name of registrant as specified in its charter) Delaware 1-14569 76-0582150 (State or other jurisdiction of incorporation) (C

Plains All American Reports Second-Quarter 2021 Results

Exhibit 99.1 Plains All American Reports Second-Quarter 2021 Results Houston, TX ? August 3, 2021? Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) today reported second-quarter 2021 results and provided various other updates. ?Completed the sale of Plains? natural gas storage assets (transaction announced June 8th and closed August 2nd) resulting in net sales

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Agreement and Plan of Merger dated as of July 12, 2021 by and among Plains Pipeline, L.P., Plains Marketing, L.P., Oryx Midstream Holdings LLC, Middle Cadence Holdings LLC, POP HoldCo LLC, Oryx Wink Oil Marketing LLC, Oryx Permian Oil Marketing LLC, Plains Oryx Permian Basin LLC, Plains Oryx Permian Basin Marketing LLC and Plains Oryx Permian Basin Pipeline LLC (incorporated by reference to Exhibit 2.1 to our Current Report on Form 8-K filed July 13, 2021).

Exhibit 2.1 Execution Version AGREEMENT and plan of Merger by and among Plains PIPELINE, L.P., a Texas limited partnership, Plains Marketing, L.P., a Texas limited partnership, ORYX MIDSTREAM HOLDINGS LLC, a Delaware limited liability company, MIDDLE CADENCE HOLDINGS LLC, a Delaware limited liability company, POP HOLDCO LLC, a Delaware limited liability company, ORYX WINK OIL MARKETING LLC, a Dela

Plains All American and Oryx Midstream Announce Permian Basin Joint Venture Conference call to be hosted by Plains today at 8:30 a.m. EDT / 7:30 a.m. CDT

Exhibit 99.1 Plains All American and Oryx Midstream Announce Permian Basin Joint Venture Conference call to be hosted by Plains today at 8:30 a.m. EDT / 7:30 a.m. CDT HOUSTON & MIDLAND, TX ? July 13, 2021 ? Plains All American (Nasdaq: PAA & PAGP) (?Plains?) and Oryx Midstream Holdings LLC (?Oryx?), a portfolio company of Stonepeak Infrastructure Partners, today announced they have entered into a

Other Events

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) ? July 2, 2021 Plains All American Pipeline, L.P. (Exact name of registrant as specified in its charter) Delaware 1-14569 76-0582150 (State or other jurisdiction of incorporation) (Com

Plains All American Executes Definitive Agreements for $850 million Sale of Natural Gas Storage Assets to Hartree Partners Transaction positions Plains to exceed $750 million 2021 asset sales target (estimated closing: 3Q21)

Exhibit 99.1 Plains All American Executes Definitive Agreements for $850 million Sale of Natural Gas Storage Assets to Hartree Partners Transaction positions Plains to exceed $750 million 2021 asset sales target (estimated closing: 3Q21) HOUSTON ? June 8, 2021 ? Plains All American (Nasdaq: PAA & PAGP) and Hartree Partners, LP (?Hartree?) today announced the execution of definitive agreements wher

Regulation FD Disclosure, Financial Statements and Exhibits

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

As filed with the Securities and Exchange Commission on May 26, 2021

As filed with the Securities and Exchange Commission on May 26, 2021 Registration No.

Submission of Matters to a Vote of Security Holders

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Regulation FD Disclosure

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 1-14569 PLAINS ALL AMERICAN PIPELINE, L.P. (Ex

- more - 333 Clay Street, Suite 1600 Houston, Texas 77002 713-646-4100 / 866-809-1291

Exhibit 99.1 Plains All American Pipeline and Plains GP Holdings Report First-Quarter 2021 Results Houston, May 04, 2021 ? Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) today reported first-quarter 2021 results and provided an update on other matters. Summary Highlights ?Reported PAA first-quarter 2021 net cash flow from operations of $791 million and net i

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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 4, 2021 Plains All American Pipeline, L.P. (Exact name of registrant as specified in its charter) Delaware 1-14569 76-0582150 (State or other jurisdiction of incorporation) (Comm

Plains All American 2021 Long-Term Incentive Plan (incorporated by reference to Exhibit A to our Definitive Proxy Statement filed on April 12, 2021).

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549? SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ???) Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? ? Confidential, for Use of the Commission Only (as permitted by R

Regulation FD Disclosure

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Plains All American Announces Officer Promotion

Exhibit 99.1 Plains All American Announces Officer Promotion March 1, 2021 – Houston – In connection with the company’s long-term succession plans, Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) announced that effective today, its Board of Directors has approved the appointment of Jeremy Goebel to an expanded role of Executive Vice President and Chief Commer

Amendment No. 4 dated February 25, 2021 to the Third Amended and Restated Limited Liability Company Agreement of PAA GP Holdings LLC (incorporated by reference to Exhibit 3.1 to our Current Report on Form 8-K filed March 3, 2021).

Exhibit 3.1 AMENDMENT NO. 4 TO THE THIRD AMENDED AND RESTATED LIMITED LIABILITY COMPANY AGREEMENT OF PAA GP HOLDINGS LLC This Amendment No. 4 (this ?Amendment?) to the Third Amended and Restated Limited Liability Company Agreement of PAA GP Holdings LLC, a Delaware limited liability company (the ?Company?), dated as of February 16, 2017 (the ?LLC Agreement?), is hereby adopted on February 25, 2021

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Form of LTIP Grant Letter dated December 21, 2017 (Goebel).

Exhibit 10.54 December 21, 2017 Jeremy Goebel [address] Re: Grant of Phantom Units Dear Jeremy: I am pleased to inform you that you have been granted 150,000 Phantom Units as of the above date pursuant to the Company?s 2013 Long-Term Incentive Plan (the ?Plan?). In addition, in tandem with each Phantom Unit you have been granted a distribution equivalent right (a ?DER?). A DER represents the right

List of Subsidiaries of Plains All American Pipeline, L.P.

Exhibit 21.1 SUBSIDIARIES OF PLAINS ALL AMERICAN PIPELINE, L.P. (As of 1/1/2021) Subsidiary Jurisdiction of Organization Aurora Pipeline Company Ltd. Canada Bakersfield Crude Terminal LLC Delaware Cactus II Pipeline LLC Delaware Capline Pipeline Company LLC Delaware Eagle Ford Crude Terminal LLC Delaware FM Midstream Holdings LLC Delaware Niobrara Crude Terminal LLC Delaware PAA Finance Corp. Dela

Form of LTIP Grant Letter dated May 1, 2018 (Chandler).

Exhibit 10.55 May 1, 2018 Christopher R. Chandler [address] Re: Grant of Phantom Units Dear Chris: I am pleased to inform you that you have been granted 75,000 Phantom Units as of the above date pursuant to the Company?s PNG Successor Long-Term Incentive Plan (the ?Plan?). In addition, in tandem with each Phantom Unit you have been granted a distribution equivalent right (a ?DER?). A DER represent

Form of Special Retention LTIP Grant Letter dated November 20, 2019 (incorporated by reference to Exhibit 10.53 to our Annual Report on Form 10-K for the year ended December 31, 2020).

Exhibit 10.53 SPECIAL RETENTION LTIP GRANT November 20, 2019 [Name] [Address] [City, State Zip] Re: Grant of Phantom Units Dear [Name]: I am pleased to inform you that you have been granted [LTIPs] Phantom Units as of the above date pursuant to the Company’s 2013 Long-Term Incentive Plan (the “Plan”). In addition, in tandem with each Phantom Unit you have been granted a distribution equivalent rig

Annual Report - 10-K

Table of Contents Index to Financial Statements UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Form of LTIP Grant Letter dated May 1, 2018 (Chandler).

Exhibit 10.56 May 1, 2018 Christopher R. Chandler [address] Re: Grant of Phantom Units Dear Chris: I am pleased to inform you that you have been granted 135,000 Phantom Units as of the above date pursuant to the Company?s PNG Successor Long-Term Incentive Plan (the ?Plan?). In addition, in tandem with each Phantom Unit you have been granted a distribution equivalent right (a ?DER?). A DER represen

Description of Our Securities (incorporated by reference to Exhibit 4.19 to our Annual Report on Form 10-K for the year ended December 31, 2020).

Exhibit 4.19 DESCRIPTION OF THE REGISTRANT?S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 As of December 31, 2020, Plains All American Pipeline L.P. has one class of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended (the ?Exchange Act?): its common units representing limited partner interests, which are described in thi

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G* (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2 (AMENDMENT NO. TWO)*

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G* (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2 (AMENDMENT NO. TWO)* Plains All American Pipeline, L.P. (Name of Issuer) Common units representing limited partner interests (Title of Class of Securities) 726503105 (CUSIP

- more - 333 Clay Street, Suite 1600 Houston, Texas 77002 713-646-4100 / 866-809-1291

Exhibit 99.1 FOR IMMEDIATE RELEASE Plains All American Pipeline and Plains GP Holdings Report Fourth-Quarter and Full-Year 2020 Results (Houston — February 9, 2021) Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) today reported fourth-quarter and full-year 2020 results and provided an update on other matters, as highlighted below. Summary Highlights •Reported

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 4)* Plains All American Pipeline, L.P. (Name of Issuer) Common Units (Title of Class of Securities) (CUSIP N

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 4)* Plains All American Pipeline, L.P. (Name of Issuer) Common Units (Title of Class of Securities) 726503105 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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) ? February 9, 2021 Plains All American Pipeline, L.P. (Exact name of registrant as specified in its charter) Delaware 1-14569 76-0582150 (State or other jurisdiction of incorporation)

Form 8-A dated December 11, 2020,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 PLAINS ALL AMERICAN PIPELINE, L.P. (Exact Name of Registrant as Specified in its Charter) Delaware 76-0582150 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Ident

- FORM 25

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 25 NOTIFICATION OF REMOVAL FROM LISTING AND/OR REGISTRATION UNDER SECTION 12(b) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 001-14569 PLAINS ALL AMERICAN PIPELINE, L.P. The New York Stock Exchange (Exact name of Issuer as specified in its charter, and name of Exchange where security is listed and/or regi

Regulation FD Disclosure, Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing, Financial Statements and Exhibits - FORM 8-K

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Plains All American Pipeline and Plains GP Holdings Announce Transfer of Stock Exchange Listings to Nasdaq Ticker symbols to remain “PAA” and “PAGP”

Exhibit 99.1 Plains All American Pipeline and Plains GP Holdings Announce Transfer of Stock Exchange Listings to Nasdaq Ticker symbols to remain “PAA” and “PAGP” HOUSTON — December 1, 2020 — Plains All American Pipeline, L.P. (NYSE: PAA) and Plains GP Holdings (NYSE: PAGP) (“Plains”) today announced plans to voluntarily transfer the stock exchange listings of their common equity securities from th

Regulation FD Disclosure - FORM 8-K

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Form of LTIP Grant Letter dated August 13, 2020 (Officers) (incorporated by reference to Exhibit 10.1 to our Quarterly Report on Form 10-Q for the quarter ended September 30, 2020).

Exhibit 10.1 2020 Regular Annual LTIP Grant US Officers August 13, 2020 «Officer» «Address» Re: Grant of Phantom Units Dear «Salutation»: I am pleased to inform you that, subject to the terms hereof, you have been granted a target number of Phantom Units equal to «LTIPGrant» as of the above date pursuant to the Company’s «LTIPPlan» Long-Term Incentive Plan (the “Plan”). In addition, in tandem with

Form of LTIP Grant Letter dated August 13, 2020 (Directors) (incorporated by reference to Exhibit 10.1 to our Quarterly Report on Form 10-Q for the quarter ended September 30, 2020).

Exhibit 10.2 2020 ANNUAL DIRECTOR GRANT August 13, 2020 [name] [address] Re: Grant of Phantom Class A Shares Dear [Name]: I am pleased to inform you that you have been granted [number] Phantom Class A Shares as of the above date pursuant to the Plains GP Holdings, L.P. Long-Term Incentive Plan (the “Plan”). In tandem with each Phantom Class A Share granted hereby you have been granted a distributi

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 1-14569 PLAINS ALL AMERICAN PIPELINE, L.P.

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events - 8-K

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) — November 2, 2020 Plains All American Pipeline, L.P. (Exact name of registrant as specified in its charter) Delaware 1-14569 76-0582150 (State or other jurisdiction of incorporation)

Plains All American Pipeline and Plains GP Holdings Announce $500 Million Common Equity Repurchase Program

Exhibit 99.2 Plains All American Pipeline and Plains GP Holdings Announce $500 Million Common Equity Repurchase Program (Houston — November 2, 2020) Plains All American Pipeline, L.P. (NYSE: PAA) and Plains GP Holdings, L.P. (NYSE: PAGP) today announced that the board of directors of PAA GP Holdings LLC has approved a $500 million common equity repurchase program (the “Program”) to be utilized as

- more - 333 Clay Street, Suite 1600 Houston, Texas 77002 713-646-4100 / 866-809-1291

Exhibit 99.1 FOR IMMEDIATE RELEASE Plains All American Pipeline and Plains GP Holdings Report Third-Quarter 2020 Results (Houston — November 2, 2020) Plains All American Pipeline, L.P. (NYSE: PAA) and Plains GP Holdings (NYSE: PAGP) today reported third-quarter 2020 results and furnished updated 2020 guidance in addition to several other significant updates, which are highlighted below. Summary Hi

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits - FORM 8-K

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Plains All American Announces Director Changes

Exhibit 99.1 FOR IMMEDIATE RELEASE Plains All American Announces Director Changes HOUSTON (September 10, 2020) – Plains All American Pipeline, L.P. (NYSE: PAA) and Plains GP Holdings (NYSE: PAGP) today announced that they have received notice from an affiliate of Kayne Anderson Capital Advisors, L.P. (“Kayne Anderson”) that Robert V. Sinnott will be retiring from service as Kayne Anderson’s design

Regulation FD Disclosure - FORM 8-K

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

- FORM 8-K

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Regulation FD Disclosure

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 1-14569 PLAINS ALL AMERICAN PIPELINE, L.P. (Exa

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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) — August 4, 2020 Plains All American Pipeline, L.P. (Exact name of registrant as specified in its charter) Delaware 1-14569 76-0582150 (State or other jurisdiction of incorporation) (C

- more - 333 Clay Street, Suite 1600 Houston, Texas 77002 713-646-4100 / 866-809-1291

Exhibit 99.1 FOR IMMEDIATE RELEASE Plains All American Pipeline and Plains GP Holdings Report Second-Quarter 2020 Results; Update 2020 Guidance (Houston — August 4, 2020) Plains All American Pipeline, L.P. (NYSE: PAA) and Plains GP Holdings (NYSE: PAGP) today reported second-quarter 2020 results and furnished updated 2020 guidance. Summary •Reported net income for the period of $142 million •Deliv

Regulation FD Disclosure

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Underwriting Agreement, dated June 8, 2020, by and among Plains All American Pipeline, L.P., PAA Finance Corp. and J.P. Morgan Securities LLC, Barclays Capital Inc., BofA Securities, Inc. and RBC Capital Markets, LLC, as representatives of the several underwriters named therein.

Exhibit 1.1 PLAINS ALL AMERICAN PIPELINE, L.P. PAA FINANCE CORP. $750,000,000 3.800% Senior Notes due 2030 UNDERWRITING AGREEMENT June 8, 2020 J.P. Morgan Securities LLC Barclays Capital Inc. BofA Securities, Inc. RBC Capital Markets, LLC As Representatives of the several Underwriters c/o J.P. Morgan Securities LLC 383 Madison Avenue New York, NY 10179 Ladies and Gentlemen: Plains All American Pip

Current Report

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Thirty-Second Supplemental Indenture (3.80% Senior Notes due 2030) dated June 11, 2020, by and among Plains All American Pipeline, L.P., PAA Finance Corp. and U.S. Bank National Association, as trustee (incorporated by reference to Exhibit 4.1 to our Current Report on Form 8-K filed June 11, 2020).

Exhibit 4.1 PLAINS ALL AMERICAN PIPELINE, L.P. PAA FINANCE CORP. as Issuers $750,000,000 3.800% SENIOR NOTES DUE 2030 THIRTY-SECOND SUPPLEMENTAL INDENTURE Dated as of June 11, 2020 U.S. BANK NATIONAL ASSOCIATION as Trustee TABLE OF CONTENTS ARTICLE I 1 Section 1.01. Establishment 1 ARTICLE II DEFINITIONS AND INCORPORATION BY REFERENCE 2 Section 2.01. Definitions 2 Section 2.02. Other Definitions 6

CALCULATION OF REGISTRATION FEE Title of Each Class of Securities to be Registered Proposed maximum aggregate offering price Amount of registration fee 3.800% Senior Notes due 2030 $750,000,000 $97,350(1)

Use these links to rapidly review the document TABLE OF CONTENTS TABLE OF CONTENTS Filed Pursuant to Rule 424(b)(5) File No.

Final Term Sheet $750,000,000 3.800% Senior Notes due 2030

Filed Pursuant to Rule 433 Registration No. 333-227358 June 8, 2020 Final Term Sheet $750,000,000 3.800% Senior Notes due 2030 Issuers: Plains All American Pipeline, L.P. and PAA Finance Corp. Ratings (Moody’s / S&P / Fitch):* Ba1 / BBB- / BBB- Security Type: Senior unsecured Legal Format: SEC-registered Pricing Date: June 8, 2020 Settlement Date (T+3): June 11, 2020 Maturity Date: September 15, 2

SUBJECT TO COMPLETION, DATED JUNE 8, 2020

Use these links to rapidly review the document TABLE OF CONTENTS TABLE OF CONTENTS Table of Contents Filed Pursuant to Rule 424(b)(3) File No.

Other Events, Submission of Matters to a Vote of Security Holders

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

- DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) o Defin

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 1-14569 PLAINS ALL AMERICAN PIPELINE, L.P. (Ex

- more - 333 Clay Street, Suite 1600 Houston, Texas 77002 713-646-4100 / 866-809-1291

Exhibit 99.1 FOR IMMEDIATE RELEASE Plains All American Pipeline, L.P. and Plains GP Holdings Report First-Quarter 2020 Results; Update 2020 Guidance (Houston — May 5, 2020) Plains All American Pipeline, L.P. (NYSE: PAA) and Plains GP Holdings (NYSE: PAGP) today reported first-quarter 2020 results and furnished updated 2020 guidance. Summary •Reported a net loss for the period of $2.8 billion inclu

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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 5, 2020 Plains All American Pipeline, L.P. (Exact name of registrant as specified in its charter) Delaware 1-14569 76-0582150 (State or other jurisdiction of incorporation) (Comm

- DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Defin

Proxy Statement for our 2020 Annual Meeting

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.     ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rul

Regulation FD Disclosure

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) — March 24, 2020 Plains All American Pipeline, L.P. (Exact name of registrant as specified in its charter) Delaware 1-14569 76-0582150 (State or other jurisdiction of incorporation) (C

Regulation FD Disclosure

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Third Amended and Restated Employment Agreement dated effective January 1, 2020 between Plains All American GP LLC and Greg L. Armstrong (incorporated by reference to Exhibit 10.31 to our Annual Report on Form 10-K for the year ended December 31, 2019.

Exhibit 10.31 THIRD AMENDED AND RESTATED EMPLOYMENT AGREEMENT This Third Amended and Restated Employment Agreement (“Agreement”), effective as of the date specified in Section 1 below, is by and between Plains All American GP LLC (the “Company”) and Greg L Armstrong (“Armstrong” or the “Employee”). The Company and the Employee are at times referred to collectively as “the Parties.” For purposes of

Annual Report - 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 1-14569 PLAINS ALL AMERICAN PIPELINE, L.P

Director LTIP Grant Letter (January 2020) (incorporated by reference to Exhibit 10.72 to our Annual Report on Form 10-K for the year ended December 31, 2019).

Exhibit 10.72 INITIAL DIRECTOR GRANT January 8, 2020 Mr. Lawrence M. Ziemba Houston, TX Re: Grant of Phantom Class A Shares Dear Larry: I am pleased to inform you that you have been granted 23,490 Phantom Class A Shares as of the above date pursuant to the Plains GP Holdings, L.P. Long-Term Incentive Plan (the "Plan"). In tandem with each Phantom Class A Share granted hereby you have been granted

Amendment No. 5 dated December 1, 2019 to the Third Amended and Restated Agreement of Limited Partnership of Plains Marketing, L.P. (incorporated by reference to Exhibit 3.7 to our Annual Report on Form 10-K for the year ended December, 31, 2019).

Exhibit 3.7 AMENDMENT NO. 5 TO THE THIRD AMENDED AND RESTATED AGREEMENT OF LIMITED PARTNERSHIP OF PLAINS MARKETING, L.P. This Amendment No. 5 (this “Amendment”) to the Third Amended and Restated Agreement of Limited Partnership of Plains Marketing, L.P., a Texas limited partnership (the “Partnership”), is hereby adopted effective as of December 1, 2019, by Plains GP LLC, a Delaware limited liabili

Description of Our Securities (incorporated by reference to Exhibit 4.19 to our Annual Report on Form 10-K for the year ended December 31, 2019).

Exhibit 4.19 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 As of December 31, 2019, Plains All American Pipeline L.P. has one class of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”): its common units representing limited partner interests, which are described in thi

List of Subsidiaries of Plains All American Pipeline, L.P.

Exhibit 21.1 SUBSIDIARIES OF PLAINS ALL AMERICAN PIPELINE, L.P. (As of 1/1/2020) Subsidiary Jurisdiction of Organization Aurora Pipeline Company Ltd. Canada Bakersfield Crude Terminal LLC Delaware Cactus II Pipeline LLC Delaware Capline Pipeline Company LLC Delaware Eagle Ford Crude Terminal LLC Delaware FM Midstream Holdings LLC Delaware Niobrara Crude Terminal LLC Delaware PAA Finance Corp. Dela

PAA / Plains All American Pipeline, L.P. / TORTOISE CAPITAL ADVISORS, L.L.C. Passive Investment

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G* (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2 (AMENDMENT NO. ONE )* Plains All American Pipeline, L.P. (Name of Issuer) Common Units Representing Limited Partner Interests (Title of Class of Securities) 726503105 (CUSIP

PAA / Plains All American Pipeline, L.P. / Harvest Fund Advisors LLC - SC 13G/A Passive Investment

SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* PLAINS ALL AMERICAN PIPELINE, L.P. (Name of Issuer) Common Units Representing Limited Partner Interests (Title of Class of Securities) 726503105 (CUSIP Number) December 31, 2019 (Date of Event which Requires Filing of this Statement) Check the a

PAA / Plains All American Pipeline, L.P. / ALPS ADVISORS INC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.3)* Plains All American Pipeline, L.P. (Name of Issuer) Common Units (Title of Class of Securities) 726503105 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Plains All American Pipeline, L.P. and Plains GP Holdings Report Fourth-Quarter and Full-Year 2019 Results

Exhibit 99.1 FOR IMMEDIATE RELEASE Plains All American Pipeline, L.P. and Plains GP Holdings Report Fourth-Quarter and Full-Year 2019 Results (Houston — February 4, 2020) Plains All American Pipeline, L.P. (NYSE: PAA) and Plains GP Holdings (NYSE: PAGP) today reported fourth-quarter and full-year 2019 results. Highlights & Announcements • Delivered fourth-quarter and full-year 2019 financial and o

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Plains All American Pipeline, L.P. and Plains GP Holdings Announce Appointment of New Board Member

Exhibit 99.1 FOR IMMEDIATE RELEASE Plains All American Pipeline, L.P. and Plains GP Holdings Announce Appointment of New Board Member HOUSTON – January 8, 2020 – Plains All American Pipeline, L.P. (NYSE: PAA) and Plains GP Holdings (NYSE: PAGP) today announced that Lawrence Ziemba has been appointed to serve as an independent member of the Board of Directors of PAA GP Holdings LLC (“GP Holdings”).

Regulation FD Disclosure

PLAINS ALL AMERICAN PIPELINE LP UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.