Tenable Holdings, Inc. — Director's Dealing 2021

May 27, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Tenable Holdings, Inc. (TENB)
CIK: 0001660280
Period of Report: 2021-05-25

Reporting Person: Huffard John C Jr (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-05-25	Common Stock	M	6677	—	Acquired	8850	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-05-25	Restricted Stock Units	$	A	4962	Acquired		Common Stock (4962.0)	Direct
2021-05-25	Restricted Stock Units	$	M	6677	Disposed		Common Stock (6677.0)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	31847	Indirect
Common Stock	390183	Indirect
Common Stock	46911	Indirect

Footnotes

F1: Mary Kathryn Braden Huffard as Trustee of the Mary Kathryn Braden Huffard Revocable Trust U/T/A dated March 2, 2012.

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. The Reporting Person's spouse and children are the beneficiaries of this trust.

F3: 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.

F4: Each restricted stock unit ("RSU") represents a contingent right to receive one share of Issuer common stock.

F5: 100% of the shares underlying the RSUs vest on the earlier of May 25, 2022 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.

F6: 100% of the shares underlying the RSUs vested on May 25, 2021.