![John Huffard](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
John Huffard
Founder at
TENABLE HOLDINGS, INC.
Net worth: 15 M $ as of 30/05/2026
Profile
Mr. John C. Huffard is an Independent Director at Norfolk Southern Corp. and a Member of National Security Telecommunications Advisory Committee. He is on the Board of Directors at Immersive Labs Ltd., Norfolk Southern Corp., Tenable Holdings, Inc. and Tenable Network Security, Inc. Mr. Huffard was previously employed as a Director-Corporate Development by Enterasys Networks, Inc., a Principal by HarbourVest Partners LLC, a Principal by Host Marriott Corp. /Old/, a Principal by John Hancock Funds, Inc., and a Principal by Microsoft Corp. He received his undergraduate degree from Washington & Lee University and an MBA from Babson College.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 12/05/2026 | 502,667 ( 0.46% ) | 14 M $ | 30/05/2026 | |
| 19/05/2026 | 3,466 ( 0% ) | 1 M $ | 30/05/2026 |
John Huffard active positions
| Companies | Position | Start |
|---|---|---|
| TENABLE HOLDINGS, INC. | Founder | 31/12/2001 |
| NORFOLK SOUTHERN CORPORATION | Director/Board Member | 20/02/2020 |
National Security Telecommunications Advisory Committee
 National Security Telecommunications Advisory Committee General GovernmentGovernment A government committee | Corporate Officer/Principal | - |
Watchtower LLC
 Watchtower LLC Internet Software/ServicesTechnology Services Operates as a platform that provides security services for SME's | Director/Board Member | - |
Former positions of John Huffard
| Companies | Position | End |
|---|---|---|
Tenable Network Security, Inc.
 Tenable Network Security, Inc. Miscellaneous Commercial ServicesCommercial Services Develops unified security monitoring solutions for securing enterprise networks | Founder | 31/12/2017 |
Enterasys Networks, Inc.
 Enterasys Networks, Inc. Packaged SoftwareTechnology Services Provides wired and wireless network infrastructure and security solutions | Corporate Officer/Principal | 28/02/2002 |
HarbourVest Partners LLC
 HarbourVest Partners LLC Investment ManagersFinance HarbourVest invests in companies located across the globe. The firm focuses on a broad range of sectors and industries. It provides financing for buyouts and growth equity capital transactions with investment size of USD 10 - 350 million. It also makes co-investments. | Corporate Officer/Principal | - |
Host Marriott Corp. /Old/
 Host Marriott Corp. /Old/ Hotels/Resorts/Cruise linesConsumer Services Owns and operates full service hotels | Corporate Officer/Principal | - |
John Hancock Funds, Inc.
 John Hancock Funds, Inc. Investment Banks/BrokersFinance Provides investment services | Corporate Officer/Principal | - |
Training of John Huffard
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
65
1st degree connections
12
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 12 |
|---|---|
Enterasys Networks, Inc.
Enterasys Networks, Inc. Packaged SoftwareTechnology Services Provides wired and wireless network infrastructure and security solutions | Technology Services |
Host Marriott Corp. /Old/
Host Marriott Corp. /Old/ Hotels/Resorts/Cruise linesConsumer Services Owns and operates full service hotels | Consumer Services |
Microsoft Corp.
 Microsoft Corp. Packaged SoftwareTechnology Services Develops, manufactures and distributes software products | Technology Services |
Norfolk Southern Corp.
 Norfolk Southern Corp. RailroadsTransportation Owns and operates intermodal network & freight railroad | Transportation |
HarbourVest Partners LLC
HarbourVest Partners LLC Investment ManagersFinance HarbourVest invests in companies located across the globe. The firm focuses on a broad range of sectors and industries. It provides financing for buyouts and growth equity capital transactions with investment size of USD 10 - 350 million. It also makes co-investments. | Finance |
Tenable Network Security, Inc.
Tenable Network Security, Inc. Miscellaneous Commercial ServicesCommercial Services Develops unified security monitoring solutions for securing enterprise networks | Commercial Services |
John Hancock Funds, Inc.
John Hancock Funds, Inc. Investment Banks/BrokersFinance Provides investment services | Finance |
Babson College
 Babson College Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Washington & Lee University
 Washington & Lee University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
National Security Telecommunications Advisory Committee
National Security Telecommunications Advisory Committee General GovernmentGovernment A government committee | Government |
Tenable Holdings, Inc.
 Tenable Holdings, Inc. Packaged SoftwareTechnology Services Develops security software solutions | Technology Services |
Watchtower LLC
Watchtower LLC Internet Software/ServicesTechnology Services Operates as a platform that provides security services for SME's | Technology Services |
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