Profile

Identity, professional record and current appointments.

Overview

Professional record at a glance

A concise summary of information supported by the cited public sources. Missing information is treated as unknown, not as a negative finding.

Current roles
22 current organizations shown on this profile
Board positions
22 supported by public sources, 0 supplied by the profile owner
Committee roles
Not establishedNo committee role is currently confirmed by the cited sources
Qualifications
Not establishedNo qualification is currently confirmed by the cited sources

Professional narrative

About

Greg Armstrong has served as a director since 2013 and as Senior Advisor to the CEO since January 1, 2020. He served as Chairman of the Board from July 2013 through December 2019 and as CEO from July 2013 until October 2018. His experience with PAA since its formation in 1998 and long-time involvement in the energy industry provide invaluable insight and perspective to the Board.

Sources are shown with the information they support.

Current roles

Appointments & responsibilities

Board appointments

Director

PLAINS ALL AMERICAN PIPELINE LP (OTC: PAAPU)

Jan 1, 1998 – Present

Independence: Not independent

Source effective: 2026-04-10 · Observed: 2026-04-24T22:43:02.148+00:00

confirmedView source

Governance

Board appointments, committee responsibilities and disclosed relationships.

Board and advisory record

Board service

Sources are shown with each role, education record, or credential.

Director

PLAINS ALL AMERICAN PIPELINE LP

1998-01-01 · current

Confirmed by public sourceView source

Director

PLAINS GP HOLDINGS LP

1998-01-01 · current

Confirmed by public sourceView source

Connections

Explore the roles, education and affiliations published in this record.

PLAINS ALL AMERICAN PIPELINE LP

A linked Registry profile is not available in this record.

Director at PLAINS ALL AMERICAN PIPELINE LP

1998-01-01 → End not stated

current · source reported

Observed: 2026-09-15

PLAINS ALL AMERICA…PLAINS ALL AMERICAN PIPELINE LPPLAINS GP HOLDINGS…PLAINS GP HOLDINGS LPGreg L. Armstrong

Dashed lines mark past roles. Select a connection to see its dates and sources.

Relationship map

Connected through the public record

Direct relationships from verified facts and published résumé records. Private connections are excluded.

  • PLAINS ALL AMERICAN PIPELINE LP

    Director

    Verified public fact

  • PLAINS GP HOLDINGS LP

    Director

    Verified public fact

Direct public links only

Only published affiliations are shown here. Private relationships require authorized access.

Experience

Career history, education, credentials and public contributions.

Published record

Featured coverage

Selected publications and public sources used to establish this profile. Inclusion records provenance; it is not an endorsement.

Source 1 · Sec FilingPAGP DEF 14A director slateSupports AI and ML experience, Board role, Committee assignments, Executive company, Executive title, Cybersecurity experience, Technology background.Open sourceSource 2 · Sec FilingPAA DEF 14A director slateSupports Board role, Committee assignments.Open source

Basis

Identifiers, sources, dates and record limitations.

Identifiers

Alpha ID
alpha:person:greg-l-armstrong
Record version
public-0

Sources

Sources and published information

Each item links to the public source used to support it. When sources disagree, the item is clearly marked for review.

AI and ML experience · Source reportedAI and ML experience: not identified in the cited filing1 source
Verification
Source reported
Confidence
72%
Last reviewed
May 15, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

Board membership · Source reportedServes on the board of PLAINS ALL AMERICAN PIPELINE LP1 source
Verification
Source reported
Confidence
Not stated
Last reviewed
Not stated
Board membership · Source reportedServes on the board of PLAINS GP HOLDINGS LP1 source
Verification
Source reported
Confidence
Not stated
Last reviewed
Not stated
Board role · CorroboratedBoard role: DirectorSupported by 2 public records2 sources
Verification
Corroborated
Confidence
92%
Last reviewed
May 15, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

Committee assignments · CorroboratedNo committee assignment disclosed in the cited filingSupported by 2 public records2 sources
Verification
Corroborated
Confidence
88%
Last reviewed
May 15, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

Cybersecurity experience · Source reportedCybersecurity experience: not identified in the cited filing1 source
Verification
Source reported
Confidence
72%
Last reviewed
May 15, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

Executive company · Source reportedExecutive at PAGP GP and GP LLC1 source
Verification
Source reported
Confidence
85%
Last reviewed
May 15, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

Executive title · Source reportedExecutive title: Senior Advisor to the CEO1 source
Verification
Source reported
Confidence
85%
Last reviewed
May 15, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

Technology background · Source reportedTechnology background: not identified in the cited filing1 source
Verification
Source reported
Confidence
72%
Last reviewed
May 15, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

View all sources6 records
  1. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

    Supports: AI and ML experience · Board role · Committee assignments · Executive company · Executive title · Cybersecurity experience · Technology background

  2. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

    Supports: Board role · Committee assignments

  3. https://www.sec.gov/Archives/edgar/data/1070423/000110465926041710/tm261430-1_def14a.htm

    Sec Proxy · Tier not stated · Reviewed Apr 24, 2026

    Supports: Director at PLAINS ALL AMERICAN PIPELINE LP (OTC: PAAPU)

  4. https://www.sec.gov/Archives/edgar/data/1581990/000110465926041724/tm261431-1_def14a.htm

    Sec Proxy · Tier not stated · Reviewed Apr 24, 2026

    Supports: Director at PLAINS GP HOLDINGS LP (NASDAQ: PAGP)

  5. https://www.sec.gov/Archives/edgar/data/1070423/000110465926041710/tm261430-1_def14a.htm

    Public Source · Tier not stated · Reviewed Not stated

    Supports: Board membership

  6. https://www.sec.gov/Archives/edgar/data/1581990/000110465926041724/tm261431-1_def14a.htm

    Public Source · Tier not stated · Reviewed Not stated

    Supports: Board membership