Brian Halligan

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 Unknown, unavailable, and unpublished values are never inferred as zero.

Record

Field	Value
Representation	alpha-profile-markdown-v3
Protocol	Alpha Governance Facts Protocol 0.1
Schema	alpha.governance.entity.public.v1
Record version	public-0
Canonical entity	alpha:person:brian-halligan
Entity type	Person
Canonical URL	https://registry.alpha.ac/people/brian-halligan
Publication	PUBLISHED
Verification	corroborated
Verification schema	alpha-verification-states-v1
Ownership	unclaimed
Published claims	14
Claims under review	0
Evidence records	6
Conflicts	0
Conflicts in internal review	0
Observed	2026-09-24T18:59:49.809958+00:00
Last reviewed	2026-05-02T01:21:15.342+00:00

Identity

Legal name: Brian Halligan
Display name: Brian Halligan

Leadership

PUBLISHED

Roles

Chair at HUBSPOT INC. Valid from: 2005-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:person:brian-halligan:4.

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:brian-halligan:2, alpha:evidence:person:brian-halligan:1.

AI expertise

AI expertise reported in filings. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:person:brian-halligan:5.

AI governance relevance

AI governance relevance reported from role and filings. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:person:brian-halligan:5.

Board independence

Not independent (executive director). Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:person:brian-halligan:3.

Board membership

Serves on the board of HubSpot Inc.. Valid from: 2005-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:evidence:person:brian-halligan:3, alpha:evidence:person:brian-halligan:6.

Board role

Board role: Chair. Valid from: 2025-04-24. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:person:brian-halligan:2.

Committee assignments

No committee assignment disclosed in the cited filing. Valid from: 2025-04-24. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:person:brian-halligan:2.

Cybersecurity experience

Cybersecurity experience: not identified in the cited filing. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:evidence:person:brian-halligan:2, alpha:evidence:person:brian-halligan:1.

Executive company

Executive at HubSpot, Inc.. Valid from: 2026-04-27. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:evidence:person:brian-halligan:2, alpha:evidence:person:brian-halligan:1, alpha:evidence:person:brian-halligan:5.

Executive function

Other Executive (OTHER_EXECUTIVE). Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:person:brian-halligan:5.

Executive title

Executive title: Co-founder and Executive Chairperson of the Board. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:person:brian-halligan:2.
Executive title: Co-founder, Director, and Former Executive Chairperson of the Board. Valid from: 2026-04-27. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:evidence:person:brian-halligan:1, alpha:evidence:person:brian-halligan:5.

Technology background

Technology background reported in filings. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:evidence:person:brian-halligan:2, alpha:evidence:person:brian-halligan:1.

Coverage states

Field	Value
Identity	PUBLISHED
Business	NOT_APPLICABLE
Leadership	PUBLISHED
Board and committees	PUBLISHED
Governance	PUBLISHED
Financials	NOT_APPLICABLE
Workforce	NOT_APPLICABLE
Ownership	NOT_APPLICABLE
Ratings	NOT_PUBLISHED
Market and index context	NOT_APPLICABLE

Public sources

alpha:evidence:person:brian-halligan:1: HUBS DEF 14A executive officers.
alpha:evidence:person:brian-halligan:2: HUBS DEF 14A director slate.
alpha:evidence:person:brian-halligan:3: HubSpot Inc. director board source.
alpha:evidence:person:brian-halligan:4: sec_filing.
alpha:evidence:person:brian-halligan:5: HUBS executive roster source.
alpha:evidence:person:brian-halligan:6: public_source.

Rights

Field	Value
public_retrieval	allowed
agent_retrieval	allowed
redistribution	not_granted
model_training	not_granted
commercial_use	not_specified
relationship_pathfinding	not_granted
direct_contact	not_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

Canonical profile
Public Markdown
Public JSON
JSON-LD
MCP resource: alpha://people/brian-halligan at https://mcp.alpha.ac/mcp

Connected governance records

Structured intelligence is not currently available. Existing published profile evidence remains accessible.