John C. Huffard Jr. - 13 May 2026 Form 4 Insider Report for Tenable Holdings, Inc. (TENB)

Reporting relationship: Director
Issuer ticker: TENB
Reported as of: 13 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 15 May 2026, 17:12:28 UTC
Prior SEC filing: 02 Apr 2026
Next SEC filing: 22 May 2026
Source filing: View source filing
Reporting owner signature: /s/ David Bartholomew, Attorney-in-Fact

Key filing fact

John C. Huffard Jr. filed Form 4 for Tenable Holdings, Inc. (TENB) on 15 May 2026.

Key facts

This page summarizes John C. Huffard Jr.'s Form 4 filing for Tenable Holdings, Inc. (TENB).
3 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 15 May 2026, 17:12.

Change

Previous filing in this sequence was filed on 02 Apr 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001747299 Primary reporting owner

Huffard John C Jr

Relationship: Director
Address: C/O TENABLE HOLDINGS, INC., 6100 MERRIWEATHER DRIVE, COLUMBIA
Signature: /s/ David Bartholomew, Attorney-in-Fact
Signature date: 15 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

TENB transaction

Common Stock

Options Exercise

Transaction value
Shares: +6,062
Change %
Price: $0.000000^*
Shares after: 6,062
Date: 13 May 2026
Ownership: Direct

TENB holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 31,847
Date: 13 May 2026
Ownership: By Spouse
Footnotes: F1

TENB holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 390,183
Date: 13 May 2026
Ownership: By Trust
Footnotes: F2

TENB holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 74,575
Date: 13 May 2026
Ownership: By Trust
Footnotes: F3, F4

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

TENB transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -6,062
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 13 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 6,062
Exercise price
Footnotes: F5, F6

TENB transaction Derivative

Restricted Stock Units

Award

Transaction value
Shares: +9,718
Change %
Price: $0.000000^*
Shares after: 9,718
Date: 13 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 9,718
Exercise price
Footnotes: F5, F7

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 7 footnotes

Footnote F1

Mary Kathryn Braden Huffard as Trustee of the Mary Kathryn Braden Huffard Revocable Trust U/T/A dated March 2, 2012.

Footnote F2

Mary Kathryn Braden Huffard and Jonathan M. Forster, as Trustees of The Three Suns 2019 Non-Exempt Irrevocable Trust U/T/A dated November 15, 2019 ("Trust"). The Reporting Person's spouse and children are the beneficiaries of the Trust. The Trust is split in three separate trusts, but reported as one.

Footnote F3

On October 20, 2025, the Reporting Person contributed 20,987 shares to the John Cloyd Huffard, Jr. Revocable Trust U/T/A dated March 2, 2012.

Footnote F4

The Trustees of the John Cloyd Huffard Jr Revocable Trust U/T/A dated March 2, 2012 are John Cloyd Huffard Jr and Mary Kathryn Braden Huffard.

Footnote F5

Each restricted stock unit ("RSU") represents a contingent right to receive one share of Issuer common stock.

Footnote F6

100% of the shares underlying the RSUs vested as of May 13, 2026.

Footnote F7

100% of the shares underlying the RSUs vest on the earlier of May 13, 2027 or the Issuer's next annual shareholder meeting, subject to the Reporting Person's continuous service with the Issuer as of the applicable vesting date, and subject to accelerated vesting in specified circumstances.