Tenable director acquires shares, granted 9,718 RSUs

Tenable Holdings director Arthur W. Coviello Jr. reported routine equity compensation activity.

Accepted by SEC EDGAR 05/15/2026 - 05:12 PM EDT

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Form Type

Rhea-AI Filing Summary

Tenable Holdings director Arthur W. Coviello Jr. reported routine equity compensation activity. On May 13, 2026, he acquired 6,062 shares of common stock through the exercise of vested restricted stock units (RSUs), bringing his direct common stock holdings to 57,793 shares after the transactions.

He was also granted 9,718 new RSUs, each representing a contingent right to receive one share of common stock. According to the filing, 100% of the shares underlying these new RSUs vest on the earlier of May 13, 2027 or Tenable’s next annual shareholder meeting, subject to his continuous service. The filing shows no share sales.

Insider Trade Summary

6,062 shares exercised/converted

Exercise 3 txns

Insider COVIELLO ARTHUR W JR

Role Director

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

Holdings After Transaction: Restricted Stock Units — 9,718 contracts (Direct); Common Stock — 57,793 shares (Direct)

Footnotes (3)

F1. Each restricted stock unit ("RSU") represents a contingent right to receive one share of Issuer common stock.
F2. 100% of the shares underlying the RSUs vested as of May 13, 2026.
F3. 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

RSUs exercised into common stock: 6,062 shares New RSU grant: 9,718 units Common shares held after transactions: 57,793 shares +3 more

6 metrics

RSUs exercised into common stock 6,062 shares Exercise of vested RSUs into common stock on May 13, 2026

New RSU grant 9,718 units Restricted stock units granted on May 13, 2026

Common shares held after transactions 57,793 shares Direct Tenable common stock holdings following Form 4 transactions

Vested RSUs percentage 100% Shares underlying certain RSUs vested as of May 13, 2026

Future RSU vesting date May 13, 2027 Latest vesting date for new RSUs, or earlier at next annual meeting

Derivative exercises count 1 exercise, 6,062 shares Summary of derivative security exercises in transactionSummary

Key Terms

Restricted Stock Units, contingent right, vested, continuous service

4 terms

Restricted Stock Units financial

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

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."

vested financial

"100% of the shares underlying the RSUs vested as of May 13, 2026."

continuous service financial

"subject to the Reporting Person's continuous service with the Issuer as of the applicable vesting date"

FAQ

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What insider transactions did Tenable (TENB) director Arthur W. Coviello Jr. report?

Arthur W. Coviello Jr. reported acquiring 6,062 Tenable common shares through RSU settlement and receiving a new grant of 9,718 restricted stock units. All transactions were acquisitions related to equity compensation, with no reported sales in this Form 4 filing.

How many Tenable (TENB) shares does Arthur W. Coviello Jr. hold after this Form 4?

After these transactions, Arthur W. Coviello Jr. holds 57,793 shares of Tenable common stock directly. This reflects the addition of 6,062 shares issued upon RSU settlement, as reported in the Form 4 insider filing for May 13, 2026.

What RSU awards did the Tenable (TENB) director receive in this filing?

The director received a grant of 9,718 restricted stock units, each representing a contingent right to one Tenable common share. These RSUs are equity compensation, not cash, and increase his potential future ownership once the vesting conditions are satisfied.

When do Arthur W. Coviello Jr.’s new Tenable (TENB) RSUs vest?

The new RSUs vest 100% on the earlier of May 13, 2027 or Tenable’s next annual shareholder meeting. Vesting is conditioned on the director’s continuous service with Tenable and may accelerate in specified circumstances outlined in the award terms.

Did the Tenable (TENB) director sell any shares in this Form 4?

No share sales were reported. The Form 4 shows only acquisition-type transactions: settlement of 6,062 RSUs into common stock and a grant of 9,718 additional RSUs. The net effect is an increase in the director’s equity-based exposure to Tenable.

What does each Tenable (TENB) restricted stock unit (RSU) represent in this filing?

Each Tenable RSU represents a contingent right to receive one share of the company’s common stock. The units convert into actual shares only when vesting conditions are met, such as remaining in continuous service through the specified vesting date.

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Form 4 Insider Transactions: What Each Field Means →

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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^*

COVIELLO ARTHUR W JR

(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	57,793	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