Person profile

Public information reviewed
Portrait of Marianne C. Brown

Marianne C. Brown

Board role

Director · International Business Machines Corporation (NYSE: IBM)

Board role

Independent Director · Charles Schwab Corporation (NYSE: SCHW-PJ)

Board role

Director · Northrop Grumman (NYSE: NOC)

International Business Machines Corporation (NYSE: IBM)

Director · Current mandate

Director · Board
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Reports & analysisAlpha Eval
Evidence records
11
Profile ownership
Not yet claimed
Record reviewed
May 16, 2026
View evidence

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
33 current organizations shown on this profile
Board positions
33 supported by public sources, 0 supplied by the profile owner
Committee roles
4Roles supported by the sources cited on this profile
Qualifications
Not establishedNo qualification is currently confirmed by the cited sources

Professional narrative

About

Former Co-COO of Fidelity National Information Services, a financial services technology company. Served as COO of SunGard and CEO of Omgeo, a financial services technology company. Brings financial technology expertise and significant public company board experience.

Sources are shown with the information they support.

Current roles

Appointments & responsibilities

Board appointments

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.

Independent Director

Charles Schwab Corporation

2020-01-01 · current

Confirmed by public sourceView source

Director

Northrop Grumman

2015-01-01 · current

Confirmed by public sourceView source

Connections

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

Charles Schwab Corporation

Open Charles Schwab Corporation profile →

Independent Director at Charles Schwab Corporation

2020-01-01 → End not stated

current · source reported

Observed: 2026-09-24

Charles Schwab Cor…Charles Schwab CorporationInternational Busi…International Business Machines CorporationNorthrop GrummanNorthrop GrummanMarianne C. Brown

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 FilingSCHW DEF 14A director slateSupports AI and ML experience, Board role, Committee assignments, Cybersecurity experience, Technology background.Open sourceSource 2 · Sec FilingNorthrop Grumman Corporation director board sourceSupports Board membership, Committee assignments, Director since, Board independence.Open sourceSource 3 · Sec FilingIBM director board sourceSupports Board membership, Director since, Board independence.Open sourceSource 4 · Sec FilingNOC DEF 14A director slateSupports Board role, Committee assignments.Open source

Basis

Identifiers, sources, dates and record limitations.

Identifiers

Alpha ID
alpha:person:marianne-c-brown
Record version
public-0

Published evidence records

11 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. SCHW DEF 14A director slate

    sec filing · Source published: Apr 6, 2026 · Retrieved: May 16, 2026

    Supports 5 claims
    • AI and ML experience: AI and ML experience: not identified in the cited filing · Claim reviewed: May 16, 2026
    • Board role: Board role: Director · Claim reviewed: May 16, 2026
    • Committee assignments: Committee assignments: Risk · Claim reviewed: May 16, 2026
    • Cybersecurity experience: Cybersecurity experience reported in filings · Claim reviewed: May 16, 2026
    • Technology background: Technology background reported in filings · Claim reviewed: May 16, 2026

  2. Open source

    sec proxy · Source published: Apr 6, 2026 · Retrieved: May 3, 2026

    Supports 1 claim
    • Professional Role: Independent Director at Charles Schwab Corporation · Claim reviewed: May 16, 2026

  3. Northrop Grumman Corporation director board source

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

    Supports 5 claims
    • Board independence: Independent director · Claim reviewed: May 3, 2026
    • Board membership: Serves on the board of Charles Schwab Corporation · Claim reviewed: May 3, 2026
    • Board membership: Serves on the board of IBM · Claim reviewed: May 3, 2026
    • Board membership: Serves on the board of Northrop Grumman Corporation · Claim reviewed: May 3, 2026
    • Committee assignments: No committee assignment disclosed in the cited filing · Claim reviewed: May 3, 2026

  4. IBM director board source

    sec filing · Source published: Mar 10, 2026 · Retrieved: May 3, 2026

    Supports 4 claims
    • Board independence: Independent director · Claim reviewed: May 3, 2026
    • Board membership: Serves on the board of Charles Schwab Corporation · Claim reviewed: May 3, 2026
    • Board membership: Serves on the board of IBM · Claim reviewed: May 3, 2026
    • Board membership: Serves on the board of Northrop Grumman Corporation · Claim reviewed: May 3, 2026

  5. IBM DEF 14A director slate

    sec filing · Source published: Mar 10, 2026 · Retrieved: Apr 29, 2026

    Supports 2 claims
    • Board role: Board role: Director · Claim reviewed: May 16, 2026
    • Committee assignments: Committee assignments: Directors and Corporate Governance · Claim reviewed: Apr 29, 2026

  6. NOC DEF 14A director slate

    sec filing · Source published: Apr 4, 2025 · Retrieved: May 15, 2026

    Supports 2 claims
    • Board role: Board role: Director · Claim reviewed: May 16, 2026
    • Committee assignments: Committee assignments: Audit and Risk, Nominating/Governance · Claim reviewed: May 15, 2026

  7. Open source

    sec filing · Source published: Jan 1, 2023 · Retrieved: May 3, 2026

    Supports 1 claim
    • Professional Role: Director at International Business Machines Corporation · Claim reviewed: May 16, 2026

  8. Open source

    sec filing · Source published: Jan 1, 2015 · Retrieved: May 3, 2026

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

  9. Open source

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

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

  10. Open source

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

    Supports 1 claim
    • Board membership: Serves on the board of Charles Schwab Corporation · 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 Northrop Grumman Corporation · 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 · 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 · 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 Charles Schwab CorporationSupported by 3 public records3 sources
Verification
Corroborated
Confidence
95%
Last reviewed
May 3, 2026
Board membership · CorroboratedServes on the board of IBMSupported by 4 public records3 sources
Verification
Corroborated
Confidence
95%
Last reviewed
May 3, 2026
Board membership · CorroboratedServes on the board of Northrop Grumman CorporationSupported by 4 public records3 sources
Verification
Corroborated
Confidence
95%
Last reviewed
May 3, 2026
Board role · CorroboratedBoard role: DirectorSupported by 3 public records3 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 Apr 29, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

Committee assignments · Source reportedNo committee assignment disclosed in the cited filing1 source
Verification
Source reported
Confidence
95%
Last reviewed
May 3, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 3, 2026

Committee assignments · Source reportedCommittee assignments: Audit and Risk, Nominating/Governance1 source
Verification
Source reported
Confidence
88%
Last reviewed
May 15, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

Committee assignments · Source reportedCommittee assignments: Directors and Corporate Governance1 source
Verification
Source reported
Confidence
88%
Last reviewed
Apr 29, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Apr 29, 2026

Committee assignments · Source reportedCommittee assignments: Risk1 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 reported in filings1 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 reported in filings1 source
Verification
Source reported
Confidence
72%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

View all sources11 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/316709/000119312526142826/d930509ddef14a.htm

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

    Supports: Independent Director at Charles Schwab Corporation (NYSE: SCHW-PJ)

  3. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 3, 2026

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

  4. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 3, 2026

    Supports: Board membership · Director since · Board independence

  5. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Apr 29, 2026

    Supports: Board role · Committee assignments

  6. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

    Supports: Board role · Committee assignments

  7. https://www.sec.gov/Archives/edgar/data/51143/000005114326000025/ibm-20260306.htm

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

    Supports: Director at International Business Machines Corporation (NYSE: IBM)

  8. https://www.sec.gov/Archives/edgar/data/1133421/000113342126000007/noc-20260401.htm

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

    Supports: Director at Northrop Grumman (NYSE: NOC)

  9. https://www.sec.gov/Archives/edgar/data/51143/000005114326000025/ibm-20260306.htm

    Public Source · Tier not stated · Reviewed Not stated

    Supports: Board membership

  10. https://www.sec.gov/Archives/edgar/data/316709/000119312526142826/d930509ddef14a.htm

    Public Source · Tier not stated · Reviewed Not stated

    Supports: Board membership

  11. https://www.sec.gov/Archives/edgar/data/1133421/000113342126000007/noc-20260401.htm

    Public Source · Tier not stated · Reviewed Not stated

    Supports: Board membership