[144] Tenable Holdings, Inc. SEC Filing

Rhea-AI Filing Summary

Tenable Holdings, Inc. (TENB) Form 144 notice reports a proposed sale of 3,464 common shares by a person for whose account the securities were acquired through restricted stock vesting on 08/25/2025 and paid as compensation the same day. The shares have an aggregate market value of $103,381.00 and the filing lists 121,094,958 shares outstanding for the class. The broker identified is Fidelity Brokerage Services LLC and the planned sale date is 08/26/2025 on NASDAQ. The filer also disclosed two prior sales in the past three months totaling 32,582 shares with gross proceeds of $993,148.68.

Positive

• The securities to be sold were acquired via restricted stock vesting, indicating compensation-related liquidity rather than an external stake liquidation
• The number of shares proposed for sale (3,464) is immaterial relative to 121,094,958 shares outstanding

Negative

• The filer disclosed insider sales in the past three months totaling 32,582 shares, which may be noted by market observers as insider liquidity

Insights

Securities Analyst

TL;DR: Insider plans to sell recently vested restricted shares; size is immaterial relative to outstanding shares.

The filing documents a proposed sale of 3,464 shares originating from restricted stock vesting and paid as compensation on 08/25/2025, to be executed through Fidelity on NASDAQ on 08/26/2025. The 3,464-shares carrying a $103,381 market value represent a vanishingly small fraction (~0.0029%) of the 121,094,958 shares reported outstanding, suggesting limited dilution or signaling impact. The disclosure of two prior recent sales totaling 32,582 shares provides context for recent insider liquidity activity but does not alone indicate material change to share supply or corporate fundamentals.

Corporate Governance Expert

TL;DR: Transaction appears routine vesting and sale; filing includes required compliance attestations.

The notice identifies the sale as arising from restricted stock vesting with payment characterized as compensation and includes the customary attestation that the seller is not aware of undisclosed material adverse information. The form satisfies Rule 144 disclosure elements: broker, amount, market value, acquisition date, and recent sales history. From a governance perspective, the filing is a routine insider disclosure rather than an indicator of governance or operational concern based on the information provided.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	3464	103381.00	121094958	08/26/2025	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	08/25/2025	Restricted Stock Vesting	Issuer			3464	08/25/2025	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Stephen Vintz 6100 Merriweather Drive Columbia MD 21044	Common	05/27/2025	3386	109873.33
Stephen Vintz 6100 Merriweather Drive Columbia MD 21044	Common	08/25/2025	29196	883275.35

144: Remarks and Signature

Remarks

Date of Notice

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What shares is TENB proposing to sell under Form 144?

The notice reports a proposed sale of 3,464 common shares of Tenable Holdings to be executed through Fidelity Brokerage Services on 08/26/2025 on NASDAQ.

How were the shares acquired that are being sold?

The shares were acquired on 08/25/2025 through restricted stock vesting and the payment is recorded as compensation.

What is the aggregate market value of the shares to be sold?

The filing states an aggregate market value of $103,381.00 for the 3,464 shares proposed for sale.

Has the seller sold other TENB shares recently?

Yes. The filing discloses two sales in the past three months: 3,386 shares on 05/27/2025 for $109,873.33 and 29,196 shares on 08/25/2025 for $883,275.35.

Who is the broker handling the proposed sale?

The broker named in the Form 144 is Fidelity Brokerage Services LLC located at 900 Salem Street, Smithfield, RI.