Tenable (TENB) director converts 3,188 RSUs into 20,231-share holding

Rhea-AI Filing Summary

Tenable Holdings director Margaret M. Keane exercised restricted stock units into common shares. On June 15, 2026, she converted 3,188 restricted stock units into 3,188 shares of common stock at a stated price of $0.00 per share. Following this transaction, she directly holds 20,231 common shares. Footnotes state that each RSU represented one share of common stock and that 100% of the underlying shares had vested as of June 13, 2026.

Insider Trade Summary

3,188 shares exercised/converted

Mixed 2 txns

Insider KEANE MARGARET M

Role null

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	3,188	$0.00	--
Exercise	Common Stock	3,188	$0.00	--

Holdings After Transaction: Restricted Stock Units — 0 shares (Direct, null); Common Stock — 20,231 shares (Direct, null)

Footnotes (1)

1. Each restricted stock unit ("RSU") represents a contingent right to receive one share of Issuer common stock. 100% of the shares underlying the RSUs vested as of June 13, 2026.

Key Figures

RSUs exercised: 3,188 units Common shares received: 3,188 shares Post-transaction holdings: 20,231 shares +3 more

6 metrics

RSUs exercised 3,188 units Restricted stock units converted on June 15, 2026

Common shares received 3,188 shares Common stock issued upon RSU conversion

Post-transaction holdings 20,231 shares Direct common stock ownership after June 15, 2026 transaction

Exercise price $0.00 per share Stated price per share for RSU conversion

Transactions classified as acquisitions 2 transactions Both derivative and non-derivative entries marked as acquire

Exercise events 1 exercise, 3,188 shares transactionSummary exerciseCount and exerciseShares

Key Terms

Restricted Stock Units, derivative security, contingent right

3 terms

Restricted Stock Units financial

"security_title: "Restricted Stock Units" and footnote defining each RSU"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

derivative security financial

"transaction_code_description: "Exercise or conversion of derivative security""

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

contingent right financial

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

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 06/17/2026 - 04:18 PM Accepted by SEC EDGAR 06/17/2026 - 04:17 PM Learn about SEC filing dates

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
Estimated average burden
hours per response:			0.5

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^*

KEANE MARGARET M

(Last) (First) (Middle)

C/O TENABLE HOLDINGS, INC

6100 MERRIWEATHER DRIVE

(Street)

COLUMBIA MARYLAND 21044

(City) (State) (Zip)

UNITED STATES

(Country)

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
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/15/2026

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

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

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

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	06/15/2026		M		3,188	A	$0	20,231	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
Restricted Stock Units	(1)	06/15/2026		M			3,188	(2)	(2)	Common Stock	3,188	$0	0	D

Explanation of Responses:

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

2. 100% of the shares underlying the RSUs vested as of June 13, 2026.

Remarks:

	/s/ David Bartholomew, Attorney-in-Fact	06/17/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Tenable (TENB) director Margaret M. Keane report?

Margaret M. Keane reported exercising 3,188 restricted stock units into 3,188 shares of Tenable common stock. This was an option-style conversion of equity awards, not an open-market purchase or sale, and reflects routine compensation-related activity rather than a discretionary trade.

How many Tenable (TENB) shares does Margaret M. Keane hold after this Form 4?

After exercising 3,188 restricted stock units, Margaret M. Keane directly holds 20,231 shares of Tenable common stock. This post-transaction figure includes the newly issued shares and represents her reported direct ownership following the June 15, 2026 equity award conversion.

Were Tenable (TENB) restricted stock units vested before conversion on this Form 4?

Yes. Footnotes state that 100% of the shares underlying the restricted stock units were vested as of June 13, 2026. The June 15, 2026 transaction simply converted these fully vested RSUs into an equivalent number of Tenable common shares on a one-for-one basis.

Did Margaret M. Keane buy or sell Tenable (TENB) shares on the open market?

No open-market buy or sell is reported. The Form 4 shows an “M” code, meaning an exercise or conversion of derivative securities, specifically restricted stock units into common shares at a stated price of $0.00 per share, with no sale transaction disclosed.

What does the M transaction code mean in this Tenable (TENB) Form 4?

The M code indicates exercise or conversion of a derivative security, not a market trade. In this filing, 3,188 restricted stock units converted into 3,188 Tenable common shares, reflecting settlement of equity awards rather than a purchase or sale on a stock exchange.