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
3Roles supported by the sources cited on this profile
Qualifications
Not establishedNo qualification is currently confirmed by the cited sources

Professional narrative

About

Over four decades of leadership in oil and natural gas industry. Founded and served as Chairman and CEO of Concho Resources from 2006 until its 2021 acquisition by ConocoPhillips. Retired from ConocoPhillips in August 2025 after serving as Executive Vice President, Lower 48. Brings expertise in upstream operations, strategic planning, and corporate governance.

Sources are shown with the information they support.

Current roles

Appointments & responsibilities

Board appointments

Director

Halliburton (NYSE: HAL)

Mar 31, 2026 – Present

Independence: Not stated

Source effective: 2026-03-31 · Observed: 2026-05-16T04:01:23.410825+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

Halliburton

2026-03-31 · current

Confirmed by public sourceView source

Chair

ConocoPhillips

2021-01-01 · current

Confirmed by public sourceView source

Connections

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

ConocoPhillips

Open ConocoPhillips profile →

Chair at ConocoPhillips

2021-01-01 → End not stated

current · source reported

Observed: 2026-09-21

ConocoPhillipsConocoPhillipsHalliburtonHalliburtonTimothy A. Leach

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.

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 FilingHAL DEF 14A director slateSupports AI and ML experience, Board role, Committee assignments, Cybersecurity experience, Technology background.Open sourceSource 2 · Sec FilingCOP DEF 14A director slateSupports Board role, Committee assignments.Open sourceSource 3 · Sec FilingConocoPhillips director board sourceSupports Board membership, Director since, Board independence.Open source

Basis

Identifiers, sources, dates and record limitations.

Identifiers

Alpha ID
alpha:person:timothy-a-leach
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 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

Board independence · Source reportedNot independent (executive director)1 source
Verification
Source reported
Confidence
95%
Last reviewed
May 3, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 3, 2026

Board membership · CorroboratedServes on the board of ConocoPhillipsSupported by 3 public records2 sources
Verification
Corroborated
Confidence
95%
Last reviewed
May 3, 2026
Board membership · CorroboratedServes on the board of HalliburtonSupported by 2 public records2 sources
Verification
Corroborated
Confidence
95%
Last reviewed
May 3, 2026
Board role · CorroboratedBoard role: DirectorSupported by 2 public records2 sources
Verification
Corroborated
Confidence
92%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

Committee assignments · Source reportedCommittee assignments: Audit, Nominating/Governance1 source
Verification
Source reported
Confidence
88%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

Committee assignments · Source reportedCommittee assignments: Public Policy and Sustainability Committee1 source
Verification
Source reported
Confidence
88%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

Cybersecurity experience · Source reportedCybersecurity experience: not identified in the cited filing1 source
Verification
Source reported
Confidence
72%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

Executive company · Source reportedExecutive at ConocoPhillips1 source
Verification
Source reported
Confidence
85%
Last reviewed
Apr 29, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Apr 29, 2026

Executive title · Source reportedExecutive title: Advisor to the Chief Executive Officer1 source
Verification
Source reported
Confidence
85%
Last reviewed
Apr 29, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Apr 29, 2026

Technology background · Source reportedTechnology background: not identified in the cited filing1 source
Verification
Source reported
Confidence
72%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

View all sources8 records
  1. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

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

  2. https://www.sec.gov/Archives/edgar/data/45012/000004501226000033/hal-20260330.htm

    Sec Filing · Tier not stated · Reviewed May 16, 2026

    Supports: Director at Halliburton (NYSE: HAL)

  3. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

    Supports: Board role · Committee assignments

  4. https://www.sec.gov/Archives/edgar/data/1163165/000110465926036366/tm2523177-3_def14a.htm

    Sec Proxy · Tier not stated · Reviewed May 3, 2026

    Supports: Chair at ConocoPhillips (NYSE: COP)

  5. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 3, 2026

    Supports: Board membership · Director since · Board independence

  6. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Apr 29, 2026

    Supports: Executive company · Executive title

  7. https://www.sec.gov/Archives/edgar/data/45012/000004501226000033/hal-20260330.htm

    Public Source · Tier not stated · Reviewed Not stated

    Supports: Board membership

  8. https://www.sec.gov/Archives/edgar/data/1163165/000110465926036366/tm2523177-3_def14a.htm

    Public Source · Tier not stated · Reviewed Not stated

    Supports: Board membership