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

Experienced executive with tenure as Chief Information Officer at General Electric. Extensive expertise in technology management, cybersecurity, and strategic planning for large multinational operations.

Sources are shown with the information they support.

Current roles

Appointments & responsibilities

Board appointments

Director

Citigroup (NYSE: C-PR)

Jan 1, 2013 – Present

Independence: Not stated

Source effective: 2013-01-01 · Observed: 2026-05-03T01:47:43.596255+00:00

confirmedView source

Governance

Board appointments, committee responsibilities and disclosed relationships.

Committee appointments across companies

Structured records are unavailable. This does not establish that no records exist.

Board and advisory record

Board service

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

Director

Citigroup

2013-01-01 · current

Confirmed by public sourceView source

Director

Hewlett Packard Enterprise

Current · start date not disclosed

Confirmed by public sourceView source

Connections

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

Citigroup

Open Citigroup profile →

Director at Citigroup

2013-01-01 → End not stated

current · source reported

Observed: 2026-09-24

CitigroupCitigroupHewlett Packard En…Hewlett Packard EnterpriseGary M. Reiner

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 FilingC-PR DEF 14A executive officersSupports AI and ML experience, Cybersecurity experience, Executive company, Executive title, Other Company Role, Technology background.Open sourceSource 2 · Sec FilingHewlett Packard Enterprise Company director board sourceSupports Board membership, Board independence.Open sourceSource 3 · Sec FilingC 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:gary-m-reiner
Record version
public-0

Published evidence records

12 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. C-PR DEF 14A executive officers

    sec filing · Source published: Apr 2, 2026 · Retrieved: Jul 28, 2026

    Supports 6 claims
    • AI and ML experience: AI and machine learning experience reported in filings · Claim reviewed: May 16, 2026
    • Cybersecurity experience: Cybersecurity experience reported in filings · Claim reviewed: May 16, 2026
    • Executive company: Executive at Citigroup · Claim reviewed: Jul 28, 2026
    • Executive title: Executive title: Director of Citigroup · Claim reviewed: Jul 28, 2026
    • Other Company Role: Gary M. Reiner is also linked to Hewlett Packard Enterprise Company as Director. · Claim reviewed: May 16, 2026
    • Technology background: Technology background reported in filings · Claim reviewed: May 16, 2026

  2. Citigroup director board source

    sec filing · Source published: Apr 2, 2026 · Retrieved: May 3, 2026

    Supports 4 claims
    • Board independence: Independent director · Claim reviewed: May 3, 2026
    • Board membership: Serves on the board of Citigroup · Claim reviewed: May 3, 2026
    • Board membership: Serves on the board of Hewlett Packard Enterprise Company · Claim reviewed: May 3, 2026
    • Committee assignments: No committee assignment disclosed in the cited filing · Claim reviewed: May 3, 2026

  3. C DEF 14A executive officers

    sec filing · Source published: Apr 2, 2026 · Retrieved: May 1, 2026

    Supports 2 claims
    • Executive company: Executive at Citigroup · Claim reviewed: Jul 28, 2026
    • Executive title: Executive title: Former Operating Partner, General Atlantic LLC · Claim reviewed: May 3, 2026

  4. C-PN DEF 14A executive officers

    sec filing · Source published: Apr 2, 2026 · Retrieved: Jul 28, 2026

    Supports 2 claims
    • Executive company: Executive at Citigroup · Claim reviewed: Jul 28, 2026
    • Executive title: Executive title: Director of Citigroup · Claim reviewed: Jul 28, 2026

  5. Hewlett Packard Enterprise Company director board source

    sec filing · Source published: Feb 11, 2026 · Retrieved: May 3, 2026

    Supports 2 claims
    • Board independence: Independent director · Claim reviewed: May 3, 2026
    • Board membership: Serves on the board of Hewlett Packard Enterprise Company · Claim reviewed: May 3, 2026

  6. HPE DEF 14A director slate

    sec filing · Source published: Feb 11, 2026 · Retrieved: Apr 29, 2026

    Supports 2 claims
    • Board role: Board role: Director · Claim reviewed: May 15, 2026
    • Committee assignments: No committee assignment disclosed in the cited filing · Claim reviewed: May 3, 2026

  7. Open source

    sec filing · Source published: Feb 11, 2026 · Retrieved: May 3, 2026

    Supports 1 claim
    • Professional Role: Director at Hewlett Packard Enterprise · Claim reviewed: May 16, 2026

  8. C DEF 14A director slate

    sec filing · Source published: Mar 18, 2025 · Retrieved: May 15, 2026

    Supports 5 claims
    • AI and ML experience: AI and ML experience: not identified in the cited filing · Claim reviewed: May 15, 2026
    • Board role: Board role: Director · Claim reviewed: May 15, 2026
    • Committee assignments: Committee assignments: Compensation, Performance Management and Culture, Nomination, Governance and Public Affairs, Technology · Claim reviewed: May 15, 2026
    • Cybersecurity experience: Cybersecurity experience: not identified in the cited filing · Claim reviewed: May 15, 2026
    • Technology background: Technology background reported in filings · Claim reviewed: May 16, 2026

  9. Open source

    sec filing · Source published: Jan 1, 2013 · Retrieved: May 3, 2026

    Supports 1 claim
    • Professional Role: Director at Citigroup · Claim reviewed: May 16, 2026

  10. C executive roster source

    sec filing · Source published: Date unavailable · Retrieved: May 3, 2026

    Supports 5 claims
    • AI expertise: AI expertise reported in filings · Claim reviewed: May 3, 2026
    • AI governance relevance: AI governance relevance reported from role and filings · Claim reviewed: May 3, 2026
    • Executive company: Executive at Citigroup · Claim reviewed: Jul 28, 2026
    • Executive function: Other Executive (OTHER_EXECUTIVE) · Claim reviewed: May 3, 2026
    • Executive title: Executive title: Former Operating Partner, General Atlantic LLC · Claim reviewed: May 3, 2026

  11. Open source

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

    Supports 1 claim
    • Board membership: Serves on the board of Citigroup · Claim reviewed: May 3, 2026

  12. Open source

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

    Supports 1 claim
    • Board membership: Serves on the board of Hewlett Packard Enterprise Company · Claim reviewed: May 3, 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 · Under reviewAI and ML experience: not identified in the cited filing1 source
Verification
Under review
Confidence
72%
Last reviewed
May 15, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

AI and ML experience · Under reviewAI and machine learning experience reported in filings1 source
Verification
Under review
Confidence
72%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Jul 28, 2026

AI expertise · Source reportedAI expertise reported in filings1 source
Verification
Source reported
Confidence
94%
Last reviewed
May 3, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 3, 2026

AI governance relevance · Source reportedAI governance relevance reported from role and filings1 source
Verification
Source reported
Confidence
94%
Last reviewed
May 3, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 3, 2026

Board independence · CorroboratedIndependent directorSupported by 2 public records2 sources
Verification
Corroborated
Confidence
95%
Last reviewed
May 3, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 3, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 3, 2026

Board membership · CorroboratedServes on the board of CitigroupSupported by 3 public records2 sources
Verification
Corroborated
Confidence
95%
Last reviewed
May 3, 2026
Board membership · CorroboratedServes on the board of Hewlett Packard Enterprise CompanySupported by 3 public records3 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 15, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Apr 29, 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
95%
Last reviewed
May 3, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Apr 29, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 3, 2026

Committee assignments · Source reportedCommittee assignments: Compensation, Performance Management and Culture, Nomination, Governance and Public Affairs, Technology1 source
Verification
Source reported
Confidence
88%
Last reviewed
May 15, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

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

    Sec Filing · Tier 3 · Reviewed May 15, 2026

Cybersecurity experience · Under reviewCybersecurity experience reported in filings1 source
Verification
Under review
Confidence
72%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Jul 28, 2026

Executive company · CorroboratedExecutive at CitigroupSupported by 4 public records4 sources
Verification
Corroborated
Confidence
94%
Last reviewed
Jul 28, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 1, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Jul 28, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Jul 28, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 3, 2026

Executive function · Source reportedOther Executive (OTHER_EXECUTIVE)1 source
Verification
Source reported
Confidence
94%
Last reviewed
May 3, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 3, 2026

Executive title · CorroboratedExecutive title: Director of CitigroupSupported by 2 public records2 sources
Verification
Corroborated
Confidence
94%
Last reviewed
Jul 28, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Jul 28, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Jul 28, 2026

Executive title · CorroboratedExecutive title: Former Operating Partner, General Atlantic LLCSupported by 2 public records2 sources
Verification
Corroborated
Confidence
94%
Last reviewed
May 3, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 1, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 3, 2026

Other Company Role · Source reportedGary M. Reiner is also linked to Hewlett Packard Enterprise Company as Director.1 source
Verification
Source reported
Confidence
70%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Jul 28, 2026

Technology background · CorroboratedTechnology background reported in filingsSupported by 2 public records2 sources
Verification
Corroborated
Confidence
72%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Jul 28, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

View all sources12 records
  1. 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

  2. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 3, 2026

    Supports: Board membership · Committee assignments · Director since · Board independence

  3. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 1, 2026

    Supports: Executive company · Executive title

  4. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Jul 28, 2026

    Supports: Executive company · Executive title

  5. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 3, 2026

    Supports: Board membership · Board independence

  6. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Apr 29, 2026

    Supports: Board role · Committee assignments

  7. https://www.sec.gov/Archives/edgar/data/1645590/000164559026000019/hpe-20260210.htm

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

    Supports: Director at Hewlett Packard Enterprise (NYSE: HPE-PC)

  8. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

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

  9. https://www.sec.gov/Archives/edgar/data/831001/000120677426000185/citi4583461-def14a.htm

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

    Supports: Director at Citigroup (NYSE: C-PR)

  10. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 3, 2026

    Supports: AI expertise · AI governance relevance · Executive company · Executive function · Executive title

  11. https://www.sec.gov/Archives/edgar/data/831001/000120677426000185/citi4583461-def14a.htm

    Public Source · Tier not stated · Reviewed Not stated

    Supports: Board membership

  12. https://www.sec.gov/Archives/edgar/data/1645590/000164559026000019/hpe-20260210.htm

    Public Source · Tier not stated · Reviewed Not stated

    Supports: Board membership