Structured intelligence coverage

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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
31 current organization shown on this profile
Board positions
11 supported by public sources, 0 supplied by the profile owner
Committee roles
2Roles supported by the sources cited on this profile
Qualifications
Not establishedNo qualification is currently confirmed by the cited sources

Professional narrative

About

Finance professional with over 30 years of leveraged finance, private equity, restructuring and operations experience. Managing Member of Meritage Capital Advisors since 2004.

Sources are shown with the information they support.

Current roles

Appointments & responsibilities

Board appointments

Committee memberships

Governance

Board appointments, committee responsibilities and disclosed relationships.

Committee appointments across companies · Temporarily unavailable

Structured records for this section are unavailable. This does not establish that no records exist. Published profile sources remain in Evidence & History.

Board and advisory record

Board service

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

Director

OneSpaWorld (NASDAQ: OSW)

Current · start date not disclosed

Confirmed by public sourceView source

Connections

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

OneSpaWorld Holdings Limited

Open OneSpaWorld Holdings Limited profile →

Director at OneSpaWorld Holdings Limited

Start not stated → End not stated

current · source reported

Observed: 2026-09-26

Member, Nominating and Governance Committee at OneSpaWorld Holdings Limited, Nominating and Governance Committee

Start not stated → End not stated

current · source reported

Observed: 2026-09-26

Chair, Audit Committee at OneSpaWorld Holdings Limited, Audit Committee

Start not stated → End not stated

current · source reported

Observed: 2026-09-26

OneSpaWorld Holdin…OneSpaWorld Holdings LimitedWalter F. McLallen

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 FilingPublic profile sourceSupports Director at OneSpaWorld Holdings Limited (NASDAQ: OSW).Open sourceSource 2 · Sec FilingHYAC-WT 10-K executive officersSupports AI and ML experience, Cybersecurity experience, Executive company, Executive title, Other Company Role, Technology background.Open source

Basis

Identifiers, sources, dates and record limitations.

Identifiers

Alpha ID
alpha:person:walter-f-mclallen
Record version
public-0

Published evidence records

6 evidence records, matching Agent View. Records may refer to different locations or observations in the same document. This count is not a count of independent corroborating sources.

  1. Open source

    sec filing · Source published: Jun 3, 2026 · Retrieved: Aug 21, 2026

    Supports 1 claim
    • Professional Role: Director at OneSpaWorld Holdings Limited · Claim reviewed: Aug 21, 2026

  2. HYAC-WT 10-K executive officers

    sec filing · Source published: Mar 30, 2026 · Retrieved: Jul 28, 2026

    Supports 6 claims
    • AI and ML experience: AI and ML experience: not identified in the cited filing · Claim reviewed: May 16, 2026
    • Cybersecurity experience: Cybersecurity experience: not identified in the cited filing · Claim reviewed: May 16, 2026
    • Executive company: Executive at Haymaker Acquisition Corp. 4 · Claim reviewed: Jul 28, 2026
    • Executive title: Executive title: Director · Claim reviewed: Jul 28, 2026
    • Other Company Role: Walter F. McLallen is also linked to Meritage Capital Advisors as Managing Member. · Claim reviewed: May 16, 2026
    • Technology background: Technology background: not identified in the cited filing · Claim reviewed: May 16, 2026

  3. HYAC-UN 10-K executive officers

    sec filing · Source published: Mar 30, 2026 · Retrieved: May 16, 2026

    Supports 2 claims
    • Executive company: Executive at Haymaker Acquisition Corp. 4 · Claim reviewed: Jul 28, 2026
    • Executive title: Executive title: Director · Claim reviewed: Jul 28, 2026

  4. HYAC 10-K executive officers

    sec filing · Source published: Mar 30, 2026 · Retrieved: Jul 28, 2026

    Supports 2 claims
    • Executive company: Executive at Haymaker Acquisition Corp. 4 · Claim reviewed: Jul 28, 2026
    • Executive title: Executive title: Director · Claim reviewed: Jul 28, 2026

  5. Open source

    sec filing · Source published: Date unavailable · Retrieved: Sep 15, 2026

    Supports 4 claims
    • Professional Role: Member, Nominating and Governance Committee at OneSpaWorld Holdings Limited, Nominating and Governance Committee · Claim reviewed: Aug 21, 2026
    • Professional Role: Chair, Audit Committee at OneSpaWorld Holdings Limited, Audit Committee · Claim reviewed: Aug 21, 2026
    • Executive title: Executive title: Chair, Audit Committee · Claim reviewed: Aug 21, 2026
    • Executive title: Executive title: Member, Nominating and Governance Committee · Claim reviewed: Aug 21, 2026

  6. Open source

    public source · Source published: Date unavailable · Retrieved: Date unavailable

    Supports 1 claim
    • Board membership: Serves on the board of OneSpaWorld · Claim reviewed: Aug 21, 2026

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 Jul 28, 2026

Board membership · Source reportedServes on the board of OneSpaWorld1 source
Verification
Source reported
Confidence
Not stated
Last reviewed
Not stated
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 Jul 28, 2026

Executive company · CorroboratedExecutive at Haymaker Acquisition Corp. 4Supported by 3 public records3 sources
Verification
Corroborated
Confidence
94%
Last reviewed
Jul 28, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Jul 28, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Jul 28, 2026

Executive title · Source reportedExecutive title: Chair, Audit Committee1 source
Verification
Source reported
Confidence
99%
Last reviewed
Aug 21, 2026
Executive title · CorroboratedExecutive title: DirectorSupported by 3 public records3 sources
Verification
Corroborated
Confidence
94%
Last reviewed
Jul 28, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Jul 28, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Jul 28, 2026

Executive title · Source reportedExecutive title: Member, Nominating and Governance Committee1 source
Verification
Source reported
Confidence
99%
Last reviewed
Aug 21, 2026
Other Company Role · Source reportedWalter F. McLallen is also linked to Meritage Capital Advisors as Managing Member.1 source
Verification
Source reported
Confidence
70%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Jul 28, 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 Jul 28, 2026

View all sources6 records
  1. https://www.sec.gov/Archives/edgar/data/1758488/000119312526177137/osw-20260424.htm

    Sec Filing · Tier not stated · Reviewed Aug 21, 2026

    Supports: Director at OneSpaWorld Holdings Limited (NASDAQ: OSW)

  2. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Jul 28, 2026

    Supports: AI and ML experience · Cybersecurity experience · Executive company · Executive title · Other Company Role · Technology background

  3. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

    Supports: Executive company · Executive title

  4. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Jul 28, 2026

    Supports: Executive company · Executive title

  5. https://www.sec.gov/Archives/edgar/data/1758488/000119312526177137/osw-20260424.htm

    Sec Filing · Tier not stated · Reviewed Sep 15, 2026

    Supports: Member, Nominating and Governance Committee at OneSpaWorld Holdings Limited (NASDAQ: OSW) · Chair, Audit Committee at OneSpaWorld Holdings Limited (NASDAQ: OSW) · Executive title

  6. https://www.sec.gov/Archives/edgar/data/1758488/000119312526177137/osw-20260424.htm

    Public Source · Tier not stated · Reviewed Not stated

    Supports: Board membership