Tenable (TENB) Co-CEO sells 3,464 shares for RSU tax withholding; substantial holdings remain

Rhea-AI Filing Summary

Stephen A. Vintz, Co-Chief Executive Officer and director of Tenable Holdings, Inc. (TENB), reported a non-discretionary sale of company stock tied to RSU tax withholding. The Form 4 shows a sell-to-cover transaction on 08/26/2025 disposing of 3,464 shares at $29.84 per share to satisfy tax withholding obligations upon vesting of restricted stock units. After the automatic sale, the reporting person beneficially owned 362,679 shares. The filing indicates the sale was required to cover taxes and was not a voluntary trade by the reporting person.

Positive

• Transaction was a sell-to-cover tied to RSU tax withholding, indicating a non-discretionary, administrative sale rather than a market-driven decision
• Reporting person retains substantial ownership with 362,679 shares after the transaction, maintaining alignment with shareholders

Negative

• Reported disposition reduced insider holdings by 3,464 shares, a direct decrease in beneficial ownership

Insights

Corporate Governance Expert

TL;DR: Routine, non-discretionary sell-to-cover for RSU taxes; not a signal of roof-level selling pressure.

The sale was executed automatically to cover tax withholding on vested restricted stock units, which is typical for equity compensation plans. Because the transaction code indicates a sell-to-cover tied to tax obligations, it lacks the discretionary intent that might concern investors about insider views on company prospects. The reporting person remains a significant shareholder with 362,679 shares, preserving alignment with long-term shareholders. No other compensatory or hedging arrangements are disclosed in this filing.

Securities Analyst

TL;DR: Small, routine disposition; impact on float and insider ownership is immaterial given remaining holdings.

The disposed amount, 3,464 shares at $29.84, represents a small fraction of the reported post-transaction ownership. The transaction appears administrative and related to RSU vesting rather than an open-market decision, reducing concerns about insider-driven liquidity. Investors seeking material signals should note the remaining beneficial ownership of 362,679 shares, which maintains substantial insider stake. No derivative activity or additional transactions are reported on this Form 4.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Vintz Stephen A

(Last) (First) (Middle)

C/O TENABLE HOLDINGS, INC.

6100 MERRIWEATHER DRIVE

(Street)

COLUMBIA MD 21044

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Tenable Holdings, Inc. [ TENB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Co-Chief Executive Officer

3. Date of Earliest Transaction (Month/Day/Year)
08/26/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/26/2025		S(1)		3,464	D	$29.84	362,679	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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.

Remarks:

	/s/ David Bartholomew, Attorney-in-Fact	08/27/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did TENB insider Stephen A. Vintz sell?

The Form 4 reports a sell-to-cover of 3,464 common shares at $29.84 per share to satisfy tax withholding on vested restricted stock units.

Was the sale by the TENB insider discretionary?

No; the filing states the sale occurred automatically to satisfy tax withholding obligations and does not represent a discretionary trade by the reporting person.

How many TENB shares does the reporting person own after the transaction?

Following the reported transaction the reporting person beneficially owned 362,679 shares.

What is the reporting person’s role at TENB?

The reporting person is listed as Co-Chief Executive Officer and Director of Tenable Holdings, Inc.

Does the Form 4 show any option or derivative transactions?

No; Table II for derivative securities shows no reported transactions in this filing.