Agent View

Machine representations

Inspect the same governed public record as Markdown, structured data, or a retrieval endpoint.

Canonical entity
alpha:person:maryann-t-mannen
Schema
alpha.governance.entity.public.v1
Last reviewed
2026-05-16T06:20:49.746+00:00
Verification
corroborated
Ownership
unclaimed

Markdown

https://registry.alpha.ac/people/maryann-t-mannen.md
Open Markdown

Maryann T. Mannen

Alpha governed public record. Unknown, unavailable, and unpublished values are never inferred as zero.

Record

FieldValue
Representationalpha-profile-markdown-v3
ProtocolAlpha Governance Facts Protocol 0.1
Schemaalpha.governance.entity.public.v1
Record versionpublic-0
Canonical entityalpha:person:maryann-t-mannen
Entity typePerson
Canonical URLhttps://registry.alpha.ac/people/maryann-t-mannen
PublicationPUBLISHED
Verificationcorroborated
Verification schemaalpha-verification-states-v1
Ownershipunclaimed
Published claims18
Claims under review0
Evidence records12
Conflicts0
Conflicts in internal review0
Observed2026-09-21T12:25:32.130136+00:00
Last reviewed2026-05-16T06:20:49.746+00:00

Identity

  • Legal name: Maryann T. Mannen
  • Display name: Maryann T. Mannen

Leadership

  • PUBLISHED

Roles

  • Director at Marathon Petroleum. Valid from: 2024-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:person:maryann-t-mannen:7.
  • Independent Director at Prudential Financial. Valid from: NOT_ASSERTED. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:person:maryann-t-mannen:2.

Governance

  • PUBLISHED

Board committees

  • PUBLISHED

AI and ML experience

  • AI and ML experience: not identified in the cited filing. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:evidence:person:maryann-t-mannen:4, alpha:evidence:person:maryann-t-mannen:1.

AI expertise

  • AI expertise: not identified in the cited filing. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:evidence:person:maryann-t-mannen:8, alpha:evidence:person:maryann-t-mannen:9.

AI governance relevance

  • AI governance relevance reported from role and filings. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:evidence:person:maryann-t-mannen:9, alpha:evidence:person:maryann-t-mannen:8.

Board independence

  • Independent director. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:person:maryann-t-mannen:3.

Board membership

  • Serves on the board of Marathon Petroleum Corporation. Valid from: 2024-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:evidence:person:maryann-t-mannen:3, alpha:evidence:person:maryann-t-mannen:11.
  • Serves on the board of Prudential Financial. Valid from: 2024-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:evidence:person:maryann-t-mannen:12, alpha:evidence:person:maryann-t-mannen:3.

Board role

  • Board role: Director. Valid from: 2026-03-26. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:person:maryann-t-mannen:1.

Committee assignments

  • Committee assignments: Compensation and Human Capital, Corporate Governance and Business Ethics. Valid from: 2026-03-26. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:person:maryann-t-mannen:1.

Cybersecurity experience

  • Cybersecurity experience: not identified in the cited filing. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:evidence:person:maryann-t-mannen:4, alpha:evidence:person:maryann-t-mannen:1.

Executive company

  • Executive at Marathon Petroleum Corporation. Valid from: 2026-02-26. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:evidence:person:maryann-t-mannen:1, alpha:evidence:person:maryann-t-mannen:5, alpha:evidence:person:maryann-t-mannen:9.
  • Executive at MPLX LP. Valid from: 2026-02-26. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:evidence:person:maryann-t-mannen:4, alpha:evidence:person:maryann-t-mannen:6, alpha:evidence:person:maryann-t-mannen:10, alpha:evidence:person:maryann-t-mannen:8.

Executive function

  • Enterprise Leadership (CEO). Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:evidence:person:maryann-t-mannen:9, alpha:evidence:person:maryann-t-mannen:8.

Executive title

  • Executive title: Chairman of the Board, President and Chief Executive Officer. Valid from: 2026-02-26. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:evidence:person:maryann-t-mannen:5, alpha:evidence:person:maryann-t-mannen:9.
  • Executive title: Chairman of the Board, President & Chief Executive Officer of MPLX GP LLC. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:person:maryann-t-mannen:10.
  • Executive title: President and CEO. Valid from: 2026-02-26. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:evidence:person:maryann-t-mannen:1, alpha:evidence:person:maryann-t-mannen:4, alpha:evidence:person:maryann-t-mannen:6, alpha:evidence:person:maryann-t-mannen:8.

Technology background

  • Technology background: not identified in the cited filing. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:evidence:person:maryann-t-mannen:1, alpha:evidence:person:maryann-t-mannen:4.

Coverage states

FieldValue
IdentityPUBLISHED
BusinessNOT_APPLICABLE
LeadershipPUBLISHED
Board and committeesPUBLISHED
GovernancePUBLISHED
FinancialsNOT_APPLICABLE
WorkforceNOT_APPLICABLE
OwnershipNOT_APPLICABLE
RatingsNOT_PUBLISHED
Market and index contextNOT_APPLICABLE

Public sources

Rights

FieldValue
public_retrievalallowed
agent_retrievalallowed
redistributionnot_granted
model_trainingnot_granted
commercial_usenot_specified
relationship_pathfindingnot_granted
direct_contactnot_granted

Limitations

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

Alternate representations