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Maryann T. Mannen

Director, Marathon Petroleum

Since Jan 1, 2024.

Record corroboratedProfile not claimedPeople are not rated
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Alpha ID
alpha:person:maryann-t-mannen
Record version
vpublic-0:d751713988987e9331980363e24189ce, published Apr 21, 2026
Newest evidence
Mar 26, 2026
Monitoring
Not yet monitored Details
Integrity
Not yet signed Methodology
Current role
DirectorSince Jan 1, 2024
Board seats
2Marathon Petroleum, Prudential Financial
Committee seats
0None published
Published claims
187 distinct sources
Evidence records
120 pinned
Source conflicts
0None open

Built from 7 distinct sources and 12 evidence records. Every Claim links to where it appears. Where nothing was published, the record states the coverage gap.

CorroboratedSource reportedAlpha inferenceNot disclosed

Public-role record. Alpha publishes facts about this person's role at an organization in the public Registry, drawn from regulatory filings and company statements, and nothing about private life. Any person or agent may read it. The subject can correct, dispute, or object. How this works

DIRECTOR APPOINTED

Maryann T. Mannen seat on Marathon Petroleum, effective 2024-01-01.

EffectiveEffective Jan 1, 2024E7

Monitoring

Continuous

What the published record states about identity, evidence, evaluation, monitoring, authority, and freshness. Watched-source schedules are not published for this record.

  • Identityunclaimed
    Published
  • Evidencecorroborated
    Published
  • Evaluationnot_evaluated
    Published
  • MonitoringNot yet published for this record.
    Not published
  • AuthorityNot yet published for this record.
    Not published
  • Freshnesscurrent
    Published

Board service

Evidence

Seats held as a director, as published in the cited sources.

Marathon Petroleum CurrentDirector, 2024 to presentOpen recordPrudential Financial CurrentIndependent Director, Current · dates not publishedOpen record
Professional RoleDirector at Marathon Petroleum
Source reportedE7
person:maryann-t-mannen:role:1
Professional RoleIndependent Director at Prudential Financial
Source reportedE2
person:maryann-t-mannen:role:2
Board membershipServes on the board of Marathon Petroleum Corporation
CorroboratedE3E11
person:maryann-t-mannen:board_membership:5
Board membershipServes on the board of Prudential Financial
CorroboratedE12E3
person:maryann-t-mannen:board_membership:6
Board roleBoard role: Director
Source reportedE1
person:maryann-t-mannen:board_role:7
Committee assignmentsCommittee assignments: Compensation and Human Capital, Corporate Governance and Business Ethics
Source reportedE1
person:maryann-t-mannen:committee_assignments:8

Committee experience

Evidence

No published claims

Nothing is published for this section yet. A missing Claim is a coverage state, not a negative finding.

Work experience

Evidence
  1. 2026 to end not published
    Executive title: Chairman of the Board, President and Chief Executive OfficerOrganization not published
    E5E9
  2. 2026 to end not published
    Executive title: President and CEOOrganization not published
    E1E4E6E8
  3. Dates not published
    Executive title: Chairman of the Board, President & Chief Executive Officer of MPLX GP LLCOrganization not published
    E10

Education, credentials, and certifications

Evidence

No education, credentials, or certifications are published in this record.

No published claims

No education, credentials, or certifications are published in this record.

AI, cyber, and technology accountability

Evidence
AI and ML experienceAI and ML experience: not identified in the cited filing
CorroboratedE4E1
person:maryann-t-mannen:ai_ml_experience:1
AI expertiseAI expertise: not identified in the cited filing
CorroboratedE8E9
person:maryann-t-mannen:ai_expertise:2
AI governance relevanceAI governance relevance reported from role and filings
CorroboratedE9E8
person:maryann-t-mannen:ai_governance_relevance:3
Technology backgroundTechnology background: not identified in the cited filing
CorroboratedE1E4
person:maryann-t-mannen:technology_background:16

Authority to act

Evidence and agent registry

Who may act on this authority. An agent about to transact, or one presenting itself as acting under this authority, checks these Claims first.

Officer of recordDirector, Marathon Petroleum, from Jan 1, 2024
Source reportedE7
person:maryann-t-mannen:role:1
Officer of recordIndependent Director, Prudential Financial
Source reportedE2
person:maryann-t-mannen:role:2
Authority to bind the companyNot assessedNo Alpha inference about signing authority or board-reserved matters is published for this record.
Not assessed
bind
AI agents acting on this authorityNot registered in the public RegistryAgent Deployments, Agent Use Cases, Authority Grants, TrustChecks, Action Ledger entries and Governance Receipts live in the private enterprise overlay. They are never projected into the public Registry without explicit cross-plane authorization. Absence here is a plane boundary, not evidence that the enterprise operates no agents.
Agent registry
agents
Delegations grantedNot disclosedBoard and officer delegation resolutions are not public filings and are not published in this record.
Search scope
delegations

Compensation and holdings

Evidence

No published claims

Nothing is published for this section yet. A missing Claim is a coverage state, not a negative finding.

Conflicts and accountability

Evidence
Board independenceIndependent director
Source reportedE3
person:maryann-t-mannen:board_independence:4

Other published claims

Evidence

Published Claims that belong to no section above. Each keeps its permalink, evidence, and assertion state.

Cybersecurity experienceCybersecurity experience: not identified in the cited filing
CorroboratedE4E1
person:maryann-t-mannen:cybersecurity_experience:9
Executive companyExecutive at Marathon Petroleum Corporation
CorroboratedE1E5E9
person:maryann-t-mannen:executive_company:10
Executive companyExecutive at MPLX LP
CorroboratedE4E6E10E8
person:maryann-t-mannen:executive_company:11
Executive functionEnterprise Leadership (CEO)
CorroboratedE9E8
person:maryann-t-mannen:executive_function:12

Not yet in this record

Coverage

A gap is a coverage state, not a negative finding. These sections are expected for this entity class and are not yet published.

  • Only permissioned public claims and evidence are included.Only permissioned public claims and evidence are included.
  • Absence of a claim is not evidence that the underlying fact is false.Absence of a claim is not evidence that the underlying fact is false.
  • Public retrieval does not grant model-training or redistribution rights.Public retrieval does not grant model-training or redistribution rights.
  • Private relationships and Council activity are excluded.Private relationships and Council activity are excluded.

Subject and corrections

Public-role doctrine

This record exists because the subject holds a public role. The subject can claim the profile, correct, dispute, or object. Subject statements appear as their own assertion state and never overwrite the evidence.

Basis
Public role at an organization in the published Registry
Sources
12 evidence records cited. 0 with redistribution rights.
Never published
Home address, family, personal contacts, health, and history unrelated to the public role
Profile claimed
No
Open disputes
0
Identity ownership
unclaimed
Claim this profileSuggest an edit

If the subject claims the profile, their statements appear as their own assertion state, subject attested. They never overwrite the evidence.

Evidence

Authority and rights
  1. E1
    PRU DEF 14A director slate
    SEC EDGAR. sec filing. Published Mar 26, 2026. Retrieved May 16, 2026. Cited by 7 Claims.
    Authoritative, regulatory filing
    Rights not recorded, link only
    Evidence not pinned
  2. E2
    Source title not published
    sec proxy. Published Mar 26, 2026. Retrieved May 3, 2026. Cited by 1 Claim.
    Authoritative, regulatory filing
    Rights not recorded, link only
    Evidence not pinned
  3. E3
    Marathon Petroleum Corporation director board source
    SEC EDGAR. sec filing. Published Mar 16, 2026. Retrieved May 3, 2026. Cited by 3 Claims.
    Authoritative, regulatory filing
    Rights not recorded, link only
    Evidence not pinned
  4. E4
    MPLX 10-K executive officers
    SEC EDGAR. sec filing. Published Feb 26, 2026. Retrieved May 16, 2026. Cited by 5 Claims.
    Authoritative, regulatory filing
    Rights not recorded, link only
    Evidence not pinned
  5. E5
    MPC 10-K executive officers
    SEC EDGAR. sec filing. Published Feb 26, 2026. Retrieved May 14, 2026. Cited by 2 Claims.
    Authoritative, regulatory filing
    Rights not recorded, link only
    Evidence not pinned
  6. E6
    MPLXP 10-K executive officers
    SEC EDGAR. sec filing. Published Feb 26, 2026. Retrieved Jul 28, 2026. Cited by 2 Claims.
    Authoritative, regulatory filing
    Rights not recorded, link only
    Evidence not pinned
  7. E7
    Source title not published
    sec filing. Published Jan 1, 2024. Retrieved May 3, 2026. Cited by 1 Claim.
    Authoritative, regulatory filing
    Rights not recorded, link only
    Evidence not pinned
  8. E8
    MPLX executive roster source
    SEC EDGAR. sec filing. Retrieved May 3, 2026. Cited by 5 Claims.
    Authoritative, regulatory filing
    Rights not recorded, link only
    Evidence not pinned
  9. E9
    MPC executive roster source
    SEC EDGAR. sec filing. Retrieved May 3, 2026. Cited by 5 Claims.
    Authoritative, regulatory filing
    Rights not recorded, link only
    Evidence not pinned
  10. E10
    MPLX LP key executives
    Financial Modeling Prep. other. Retrieved May 1, 2026. Cited by 2 Claims.
    Open web
    Rights not recorded, link only
    Evidence not pinned
  11. E11
    Source title not published
    public source. Cited by 1 Claim.
    Authoritative, regulatory filing
    Rights not recorded, link only
    Evidence not pinned
  12. E12
    Source title not published
    public source. Cited by 1 Claim.
    Authoritative, regulatory filing
    Rights not recorded, link only
    Evidence not pinned

What changed in version public-0:d751713988987e9331980363e24189ce

vpublic-0:d751713988987e9331980363e24189ce published Apr 21, 2026
  • Maryann T. Mannen seat on Marathon Petroleum, effective 2024-01-01.
Appearance

Alpha Governance PBC. The Registry records reported facts and Alpha's assessments separately. A missing fact is not evidence that it is false.

Record alpha:person:maryann-t-mannen, version public-0:d751713988987e9331980363e24189ce. https://registry.alpha.ac/people/maryann-t-mannen

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On this record

  1. Overview
  2. Monitoring4
  3. Board service6
  4. Committees0
  5. Work experience3
  6. Education and credentials0
  7. AI, cyber, technology4
  8. Authority to act5
  9. Compensation0
  10. Conflicts and accountability1
  11. Other published claims4
  12. Coverage gaps4
  13. Linked records3
  14. Subject and corrections6
  15. Evidence12
  16. Version historyvpublic-0:d751713988987e9331980363e24189ce

Linked records

Registry

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  • Records
    Maryann T. MannenPerson
  • Marathon PetroleumCompany
  • Prudential FinancialCompany
  • Sections
    OverviewMaryann T. Mannen
  • MonitoringMaryann T. Mannen
  • Board serviceMaryann T. Mannen
  • CommitteesMaryann T. Mannen
  • Work experienceMaryann T. Mannen
  • Education and credentialsMaryann T. Mannen
  • AI, cyber, technologyMaryann T. Mannen
  • Authority to actMaryann T. Mannen
  • CompensationMaryann T. Mannen
  • Conflicts and accountabilityMaryann T. Mannen
  • Other published claimsMaryann T. Mannen
  • Coverage gapsMaryann T. Mannen
  • Linked recordsMaryann T. Mannen
  • Subject and correctionsMaryann T. Mannen
  • EvidenceMaryann T. Mannen
  • Version historyMaryann T. Mannen
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