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
11 current organization shown on this profile
Board positions
11 supported by public sources, 0 supplied by the profile owner
Committee roles
2Roles supported by the sources cited on this profile
Qualifications
Not establishedNo qualification is currently confirmed by the cited sources

Professional narrative

About

Former owner of SUNation Solar Systems, Inc. Appointed as Senior Vice President, Corporate Development upon acquisition in November 2022.

Sources are shown with the information they support.

Current roles

Appointments & responsibilities

Board appointments

Lead Independent Director

American Express (NYSE: AXP)

Mar 14, 2025 – Present

Independence: Not stated

Source effective: 2026-03-25 · Observed: 2026-05-15T19:52:24.668064+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.

Lead Independent Director

American Express

2025-03-14 · current

Confirmed by public sourceView source

Connections

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

American Express

Open American Express profile →

Lead Independent Director at American Express

2025-03-14 → End not stated

current · source reported

Observed: 2026-09-24

American ExpressAmerican ExpressJames Brennan

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 FilingPublic profile sourceSupports Lead Independent Director at American Express (NYSE: AXP).Open sourceSource 2 · Sec FilingSUNE 10-K executive officersSupports AI and ML experience, Cybersecurity experience, Executive company, Executive title, Technology background.Open sourceSource 3 · Sec FilingSDHI 10-K executive officersSupports Executive company, Executive title, Other Company Role.Open source

Basis

Identifiers, sources, dates and record limitations.

Identifiers

Alpha ID
alpha:person:john-j-brennan
Record version
public-0

Published evidence records

5 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. Open source

    sec filing · Source published: Mar 25, 2026 · Retrieved: May 15, 2026

    Supports 1 claim
    • Professional Role: Lead Independent Director at American Express · Claim reviewed: May 16, 2026

  2. SUNE 10-K executive officers

    sec filing · Source published: Mar 23, 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
    • Cybersecurity experience: Cybersecurity experience: not identified in the cited filing · Claim reviewed: May 16, 2026
    • Executive company: Executive at SUNation Energy, Inc. · Claim reviewed: May 16, 2026
    • Executive title: Executive title: Chief Operating Officer and Chief Financial Officer · Claim reviewed: May 16, 2026
    • Technology background: Technology background: not identified in the cited filing · Claim reviewed: May 16, 2026

  3. SDHI 10-K executive officers

    sec filing · Source published: Mar 16, 2026 · Retrieved: May 16, 2026

    Supports 3 claims
    • Executive company: Executive at Siddhi Acquisition Corp (Cayman Islands) · Claim reviewed: May 16, 2026
    • Executive title: Executive title: Director · Claim reviewed: May 16, 2026
    • Other Company Role: Jessica Hoffman Brennan is also linked to Kohlberg and Company as Senior Advisor. · Claim reviewed: May 16, 2026

  4. AXP DEF 14A director slate

    sec filing · Source published: Mar 14, 2025 · Retrieved: May 15, 2026

    Supports 7 claims
    • AI and ML experience: AI and ML experience: not identified in the cited filing · Claim reviewed: May 16, 2026
    • Board role: Board role: Lead Independent Director · Claim reviewed: May 15, 2026
    • Committee assignments: Committee assignments: Audit and Compliance, Compensation and Benefits · Claim reviewed: May 15, 2026
    • Cybersecurity experience: Cybersecurity experience: not identified in the cited filing · Claim reviewed: May 16, 2026
    • Executive company: Executive at Vanguard · Claim reviewed: May 15, 2026
    • Executive title: Executive title: Chairman Emeritus and Senior Advisor · Claim reviewed: May 15, 2026
    • Technology background: Technology background: not identified in the cited filing · Claim reviewed: May 16, 2026

  5. Open source

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

    Supports 1 claim
    • Board membership: Serves on the board of American Express · Claim reviewed: May 16, 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 · CorroboratedAI and ML experience: not identified in the cited filingSupported by 2 public records2 sources
Verification
Corroborated
Confidence
72%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

Board membership · Source reportedServes on the board of American Express1 source
Verification
Source reported
Confidence
Not stated
Last reviewed
Not stated
Board role · Source reportedBoard role: Lead Independent Director1 source
Verification
Source reported
Confidence
92%
Last reviewed
May 15, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

Committee assignments · Source reportedCommittee assignments: Audit and Compliance, Compensation and Benefits1 source
Verification
Source reported
Confidence
88%
Last reviewed
May 15, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

Cybersecurity experience · CorroboratedCybersecurity experience: not identified in the cited filingSupported by 2 public records2 sources
Verification
Corroborated
Confidence
72%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

Executive company · Source reportedExecutive at Siddhi Acquisition Corp (Cayman Islands)1 source
Verification
Source reported
Confidence
94%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

Executive company · Source reportedExecutive at SUNation Energy, Inc.1 source
Verification
Source reported
Confidence
94%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

Executive company · Source reportedExecutive at Vanguard1 source
Verification
Source reported
Confidence
85%
Last reviewed
May 15, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

Executive title · Source reportedExecutive title: Chairman Emeritus and Senior Advisor1 source
Verification
Source reported
Confidence
85%
Last reviewed
May 15, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

Executive title · Source reportedExecutive title: Chief Operating Officer and Chief Financial Officer1 source
Verification
Source reported
Confidence
94%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

Executive title · Source reportedExecutive title: Director1 source
Verification
Source reported
Confidence
94%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

Other Company Role · Source reportedJessica Hoffman Brennan is also linked to Kohlberg and Company as Senior Advisor.1 source
Verification
Source reported
Confidence
70%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

Technology background · CorroboratedTechnology background: not identified in the cited filingSupported by 2 public records2 sources
Verification
Corroborated
Confidence
72%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

View all sources5 records
  1. https://www.sec.gov/Archives/edgar/data/0000004962/000119312525054588/d804836ddef14a.htm

    Sec Filing · Tier not stated · Reviewed May 15, 2026

    Supports: Lead Independent Director at American Express (NYSE: AXP)

  2. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

    Supports: AI and ML experience · Cybersecurity experience · Executive company · Executive title · Technology background

  3. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

    Supports: Executive company · Executive title · Other Company Role

  4. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

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

  5. https://www.sec.gov/Archives/edgar/data/0000004962/000119312525054588/d804836ddef14a.htm

    Public Source · Tier not stated · Reviewed Not stated

    Supports: Board membership