What does the 6,062-share RSU exercise by Tenable (TENB) director Keane represent?

The exercise reflects 6,062 restricted stock units that had fully vested as of May 13, 2026 and converted into an equal number of Tenable common shares. This transaction turns previously awarded stock-based compensation into directly held stock without indicating an open-market purchase or sale.

Director at Tenable (TENB) gets 9,718 RSUs, now holds 17,043 shares

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

Tenable Holdings director Margaret M. Keane reported equity compensation activity. She exercised previously granted restricted stock units, receiving 6,062 shares of common stock, bringing her direct common stock holdings to 17,043 shares after the transaction.

She was also granted 9,718 new restricted stock units, each representing a right to receive one share of Tenable common stock. According to the terms, all shares underlying these RSUs vest on the earlier of May 13, 2027 or Tenable’s next annual shareholder meeting, assuming she continues serving the company, with potential accelerated vesting in certain situations.

Insider Trade Summary

6,062 shares exercised/converted

Mixed 3 txns

Insider KEANE MARGARET M

Role null

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	6,062	$0.00	--
Grant/Award	Restricted Stock Units	9,718	$0.00	--
Exercise	Common Stock	6,062	$0.00	--

Holdings After Transaction: Restricted Stock Units — 0 shares (Direct, null); Common Stock — 17,043 shares (Direct, null)

Footnotes (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 May 13, 2026. 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.

Key Figures

RSU exercise into common stock: 6,062 shares Common shares after transaction: 17,043 shares New RSU grant: 9,718 RSUs +2 more

5 metrics

RSU exercise into common stock 6,062 shares Restricted stock units converted to Tenable common stock on May 13, 2026

Common shares after transaction 17,043 shares Direct Tenable common stock holdings following RSU exercise

New RSU grant 9,718 RSUs Restricted stock unit award granted on May 13, 2026

RSU-to-share ratio 1 RSU : 1 share Each RSU represents a contingent right to one Tenable common share

New RSU vesting date May 13, 2027 RSUs vest on the earlier of May 13, 2027 or the next annual shareholder meeting

Key Terms

Restricted Stock Units, contingent right, accelerated vesting, derivative exercise/conversion

4 terms

Restricted Stock Units financial

"100% of the shares underlying the RSUs vest on the earlier of May 13, 2027 or the Issuer's next annual shareholder meeting"

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.

contingent right financial

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

accelerated vesting financial

"subject to accelerated vesting in specified circumstances"

derivative exercise/conversion financial

"transaction_action: derivative exercise/conversion"

Form 4 Insider Transactions: What Each Field Means →

05/15/2026 - 05:12 PM

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)
05/13/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	05/13/2026		M		6,062	A	$0	17,043	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Restricted Stock Units	⁽¹⁾	05/13/2026		M			6,062	⁽²⁾	⁽²⁾	Common Stock	6,062	$0	0	D
Restricted Stock Units	⁽¹⁾	05/13/2026		A		9,718		⁽³⁾	⁽³⁾	Common Stock	9,718	$0	9,718	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 May 13, 2026.

3. 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.

Remarks:

	/s/ David Bartholomew, Attorney-in-Fact	05/15/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

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

She reported exercising restricted stock units into 6,062 Tenable common shares and receiving a new grant of 9,718 restricted stock units. These transactions increase her equity-based exposure to Tenable through both directly owned shares and unvested RSUs.

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

Following the exercise, she directly holds 17,043 shares of Tenable common stock. In addition, she has 9,718 restricted stock units outstanding, each representing a contingent right to receive one additional Tenable common share upon vesting.

What are the terms of Margaret M. Keane’s new 9,718 RSU grant at Tenable (TENB)?

The 9,718 restricted stock units vest 100% on the earlier of May 13, 2027 or Tenable’s next annual shareholder meeting. Vesting requires her continuous service with Tenable through that date, with accelerated vesting possible in specified circumstances described in the award terms.

Are Margaret M. Keane’s Tenable (TENB) insider transactions open-market buys or sells?

No, the Form 4 shows a derivative exercise and an equity award, not open-market trades. She exercised vested restricted stock units into common shares and received a new restricted stock unit grant as compensation, both at a stated price of $0.00 per unit or share.