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
2Roles supported by the sources cited on this profile
Qualifications
Not establishedNo qualification is currently confirmed by the cited sources

Professional narrative

About

Independent Chair of the Board of CSX Corporation. Director nominee with expertise in key areas relevant to CSX strategy. Detailed biography information not provided in the available proxy statement excerpt.

Sources are shown with the information they support.

Current roles

Appointments & responsibilities

Board appointments

Director

Aramark (NYSE: ARMK)

Dec 22, 2025 – Present

Independence: Not stated

Source effective: 2025-12-22 · Observed: 2026-05-15T21:14:51.579754+00:00

confirmedView source

Director

Ecolab (NYSE: ECL)

Jan 1, 2006 – Present

Independence: Not stated

Source effective: 2006-01-01 · Observed: 2026-05-03T01:47:45.85738+00:00

confirmedView source

Governance

Board appointments, committee responsibilities and disclosed relationships.

Board and advisory record

Board service

Sources are shown with each role, education record, or credential.

Chair

CSX Corporation

2026-03-30 · current

Confirmed by public sourceView source

Director

Aramark

2025-12-22 · current

Confirmed by public sourceView source

Director

Ecolab

2006-01-01 · current

Confirmed by public sourceView source

Connections

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

Aramark

Open Aramark profile →

Director at Aramark

2025-12-22 → End not stated

current · source reported

Observed: 2026-09-21

AramarkAramarkCSX CorporationCSX CorporationEcolabEcolabJohn J. Zillmer

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 FilingCSX DEF 14A director slateSupports AI and ML experience, Board role, Committee assignments, Cybersecurity experience, Technology background.Open sourceSource 2 · Sec FilingEcolab Inc. director board sourceSupports Board membership, Director since, Board independence.Open sourceSource 3 · Sec FilingARMK DEF 14A director slateSupports Board role, Committee assignments, Executive company, Executive title.Open sourceSource 4 · Sec FilingARMK 10-K executive officersSupports AI and ML experience, Cybersecurity experience, Executive company, Executive title, Other Company Role, Technology background.Open source

Basis

Identifiers, sources, dates and record limitations.

Identifiers

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

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 16, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 14, 2026

AI expertise · Source reportedAI expertise: not identified in the cited filing1 source
Verification
Source reported
Confidence
94%
Last reviewed
May 3, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 3, 2026

AI governance relevance · Source reportedAI governance relevance reported from role and filings1 source
Verification
Source reported
Confidence
94%
Last reviewed
May 3, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 3, 2026

Board independence · Source reportedIndependent director1 source
Verification
Source reported
Confidence
95%
Last reviewed
May 3, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 3, 2026

Board membership · CorroboratedServes on the board of AramarkSupported by 2 public records2 sources
Verification
Corroborated
Confidence
95%
Last reviewed
May 3, 2026
Board membership · CorroboratedServes on the board of CSX CorporationSupported by 2 public records2 sources
Verification
Corroborated
Confidence
95%
Last reviewed
May 3, 2026
Board membership · CorroboratedServes on the board of Ecolab Inc.Supported by 3 public records2 sources
Verification
Corroborated
Confidence
95%
Last reviewed
May 3, 2026
Board role · Source reportedBoard role: Chair1 source
Verification
Source reported
Confidence
92%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

Board role · CorroboratedBoard role: DirectorSupported by 2 public records2 sources
Verification
Corroborated
Confidence
92%
Last reviewed
May 15, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 9, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

Committee assignments · CorroboratedNo committee assignment disclosed in the cited filingSupported by 2 public records2 sources
Verification
Corroborated
Confidence
88%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

Committee assignments · Source reportedCommittee assignments: Compensation & Human Capital Management, Finance1 source
Verification
Source reported
Confidence
88%
Last reviewed
May 9, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 9, 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 16, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 14, 2026

Executive company · CorroboratedExecutive at AramarkSupported by 3 public records3 sources
Verification
Corroborated
Confidence
94%
Last reviewed
May 15, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 14, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 3, 2026

Executive function · Source reportedEnterprise Leadership (CEO)1 source
Verification
Source reported
Confidence
94%
Last reviewed
May 3, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 3, 2026

Executive title · CorroboratedExecutive title: Chief Executive OfficerSupported by 3 public records3 sources
Verification
Corroborated
Confidence
94%
Last reviewed
May 15, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 14, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 3, 2026

Other Company Role · Source reportedJohn J. Zillmer is also linked to CSX Corporation as Non-Executive Chairman.1 source
Verification
Source reported
Confidence
70%
Last reviewed
May 14, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 14, 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 14, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

View all sources12 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/277948/000162828026021944/csx-20260326.htm

    Sec Filing · Tier not stated · Reviewed May 16, 2026

    Supports: Chair at CSX Corporation (NASDAQ: CSX)

  3. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 3, 2026

    Supports: Board membership · Director since · Board independence

  4. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 9, 2026

    Supports: Board role · Committee assignments

  5. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

    Supports: Board role · Committee assignments · Executive company · Executive title

  6. https://www.sec.gov/Archives/edgar/data/1584509/000158450925000256/cik0-20251222.htm

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

    Supports: Director at Aramark (NYSE: ARMK)

  7. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 14, 2026

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

  8. https://www.sec.gov/Archives/edgar/data/31462/000110465926032777/tm2530816-3_def14a.htm

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

    Supports: Director at Ecolab (NYSE: ECL)

  9. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 3, 2026

    Supports: AI expertise · AI governance relevance · Executive company · Executive function · Executive title

  10. https://www.sec.gov/Archives/edgar/data/277948/000162828026021944/csx-20260326.htm

    Public Source · Tier not stated · Reviewed Not stated

    Supports: Board membership

  11. https://www.sec.gov/Archives/edgar/data/1584509/000158450925000256/cik0-20251222.htm

    Public Source · Tier not stated · Reviewed Not stated

    Supports: Board membership

  12. https://www.sec.gov/Archives/edgar/data/31462/000110465926032777/tm2530816-3_def14a.htm

    Public Source · Tier not stated · Reviewed Not stated

    Supports: Board membership