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
21 current organization shown on this profile
Board positions
11 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

Mark W. Helderman is an independent director of ONEOK, Inc.

Sources are shown with the information they support.

Current roles

Appointments & responsibilities

Board appointments

Director

Oneok (NYSE: OKE)

Current

Independence: Not stated

Source effective: 2026-05-20 · Observed: 2026-07-31T08:03:03.256+00:00

confirmedView source

Independent Director

Oneok (NYSE: OKE)

Current

Independence: Independent

Source effective: 2026-04-01 · Observed: 2026-05-03T01:18:31.878+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

Oneok

Current · start date not disclosed

Confirmed by public sourceView source

Independent Director

Oneok

Current · start date not disclosed

Confirmed by public sourceView source

Connections

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

Oneok

Open Oneok profile →

Director at Oneok

Start not stated → End not stated

current · source reported

Observed: 2026-09-21

Independent Director at Oneok

Start not stated → End not stated

current · source reported

Observed: 2026-09-21

OneokOneokMark W. Helderman

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.

  • Oneok

    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 Form OwnershipPublic profile sourceSupports Director at Oneok (NYSE: OKE).Open sourceSource 2 · Sec FilingOKE DEF 14A director slateSupports AI and ML experience, Board role, Committee assignments, Cybersecurity experience, Technology background.Open source

Basis

Identifiers, sources, dates and record limitations.

Identifiers

Alpha ID
alpha:person:mark-w-helderman
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 membership · CorroboratedServes on the board of OneokSupported by 2 public records2 sources
Verification
Corroborated
Confidence
Not stated
Last reviewed
Not stated
Board role · Source reportedBoard role: Director1 source
Verification
Source reported
Confidence
92%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

Committee assignments · Source reportedNo committee assignment disclosed in the cited filing1 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

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 sources5 records
  1. https://www.sec.gov/Archives/edgar/data/1039684/000176662126000002/wk-form4_1779455042.xml

    Sec Form Ownership · Tier not stated · Reviewed Jul 31, 2026

    Supports: Director at Oneok (NYSE: OKE)

  2. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

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

  3. https://www.sec.gov/Archives/edgar/data/1039684/000103968426000010/oke-20260331.htm

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

    Supports: Independent Director at Oneok (NYSE: OKE)

  4. https://www.sec.gov/Archives/edgar/data/1039684/000176662126000002/wk-form4_1779455042.xml

    Public Source · Tier not stated · Reviewed Not stated

    Supports: Board membership

  5. https://www.sec.gov/Archives/edgar/data/1039684/000103968426000010/oke-20260331.htm

    Public Source · Tier not stated · Reviewed Not stated

    Supports: Board membership