Stephen A. Riddick - Aug 19, 2021 Form 4 Insider Report for Tenable Holdings, Inc. (TENB)

Role: General Counsel & Secretary
Signature: /s/ David Bartholomew, Attorney-in-Fact
Stock symbol: TENB
Transactions as of: Aug 19, 2021
Transactions value $: -$76,579
Form type: 4
Date filed: 8/23/2021, 05:03 PM
Previous filing: Sep 13, 2021
Next filing: Aug 24, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	TENB	Common Stock	Options Exercise	$0	+3.97K	+15.83%	$0.00	29K	Aug 19, 2021	Direct
transaction	TENB	Common Stock	Sale	-$76.6K	-1.9K	-6.53%	$40.39	27.1K	Aug 20, 2021	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	TENB	Restricted Stock Units	Options Exercise	$0	-3.97K	-9.09%	$0.00	39.7K	Aug 19, 2021	Common Stock	3.97K		Direct	F2, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The sale reported on this Form 4 represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. The sale occurred automatically to satisfy the tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the Reporting Person.
F2	Each restricted stock unit ("RSU") represents a contingent right to receive one share of Issuer common stock.
F3	25% of the shares underlying the RSUs vest on February 19, 2021, with the remainder vesting in equal quarterly installments over 3 years, 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.