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
21 current organization shown on this profile
Board positions
11 supported by public sources, 0 supplied by the profile owner
Committee roles
3Roles supported by the sources cited on this profile
Qualifications
Not establishedNo qualification is currently confirmed by the cited sources

Professional narrative

About

Interim President and Chief Executive Officer of Sparton Corporation (NYSE: SPA) from February 2016 to March 2019. Previously served as President and Chief Executive Officer of Ingenient Technologies, Inc. and U.S. Robotics Corporation. Was a partner with Grant Thornton LLP for over 20 years in various leadership positions. Registered Certified Public Accountant in Illinois with a Bachelor's degree in Accounting from the University of Illinois at Chicago.

Sources are shown with the information they support.

Current roles

Appointments & responsibilities

Board appointments

Independent Director

Garmin (NYSE: GRMN)

Jan 1, 2013 – Present

Independence: Independent

Source effective: 2026-04-22 · Observed: 2026-05-03T00:51:01.25+00:00

confirmedView source

Director

Garmin (NYSE: GRMN)

Current

Independence: Independent

Source effective: 2026-04-22 · Observed: 2026-09-14T17:06:12.784148+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.

Independent Director

Garmin

2013-01-01 · current

Confirmed by public sourceView source

Director

Garmin

Current · start date not disclosed

Confirmed by public sourceView source

Connections

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

Garmin

Open Garmin profile →

Independent Director at Garmin

2013-01-01 → End not stated

current · source reported

Observed: 2026-09-21

Director at Garmin

Start not stated → End not stated

current · source reported

Observed: 2026-09-21

GarminGarminJoseph J. Hartnett

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.

  • Garmin

    Independent Director

    Verified public fact

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 FilingGRMN DEF 14A director slateSupports AI and ML experience, Board role, Committee assignments, Cybersecurity experience, Technology background.Open source

Basis

Identifiers, sources, dates and record limitations.

Identifiers

Alpha ID
alpha:person:joseph-j-hartnett
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 · Source reportedAI and ML experience: not identified in the cited filing1 source
Verification
Source reported
Confidence
72%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

Board membership · Source reportedServes on the board of GarminSupported by 2 public records1 source
Verification
Source reported
Confidence
Not stated
Last reviewed
Not stated
Board role · Source reportedBoard role: Director1 source
Verification
Source reported
Confidence
92%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

Committee assignments · Source reportedCommittee assignments: Audit, Compensation, Nominating/Governance1 source
Verification
Source reported
Confidence
88%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

Cybersecurity experience · Source reportedCybersecurity experience: not identified in the cited filing1 source
Verification
Source reported
Confidence
72%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

Technology background · Source reportedTechnology background: not identified in the cited filing1 source
Verification
Source reported
Confidence
72%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

View all sources4 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/1121788/000130817926000318/grmn015328-def14a.htm

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

    Supports: Independent Director at Garmin (NYSE: GRMN)

  3. https://www.sec.gov/Archives/edgar/data/1121788/000130817926000318/grmn015328-def14a.htm

    Sec Def 14a · Tier not stated · Reviewed Sep 14, 2026

    Supports: Director at Garmin (NYSE: GRMN)

  4. https://www.sec.gov/Archives/edgar/data/1121788/000130817926000318/grmn015328-def14a.htm

    Public Source · Tier not stated · Reviewed Not stated

    Supports: Board membership