TENB Form 144 Notice: 28,500 Vested Shares Proposed for Sale on NASDAQ

Rhea-AI Filing Summary

Tenable Holdings, Inc. (TENB) filing a Form 144 notifies the market of a proposed sale of 28,500 common shares with an aggregate market value of $862,219.04, planned approximately for 08/25/2025 on NASDAQ. The filing reports the shares were acquired on 08/22/2025 through restricted stock vesting from the issuer and were paid as compensation.

The filing also discloses a prior sale by the same person: 2,483 common shares sold on 05/27/2025 for gross proceeds of $80,571.62. The form includes a representation that the signer does not possess undisclosed material adverse information. Certain issuer contact fields in the Form 144 content are blank or not provided in the document.

Positive

• Disclosure filed under Rule 144 providing transparent notice of a proposed insider sale
• Securities were acquired via restricted stock vesting, clearly labeled as compensation
• Prior sale history disclosed (2,483 shares sold on 05/27/2025 for $80,571.62), improving transaction traceability

Negative

• Insider proposes to sell 28,500 shares (aggregate market value $862,219.04), which could be perceived negatively by some investors
• Issuer contact fields are blank or not provided in the form content, reducing administrative completeness

Insights

Securities Analyst

TL;DR: Insiders disclosed a planned sale of vested restricted shares (28,500 shares, ~$862k) with a recent small sale in May; filing meets disclosure rules.

The Form 144 shows a proposed block sale tied to restricted stock vesting and recorded as compensation, which is routine for equity-based pay. The filing quantifies the position being offered and the expected market value, supporting market transparency. The prior sale of 2,483 shares for $80,571.62 is also disclosed, which helps track recent insider liquidity. Missing issuer contact fields reduce administrative completeness but do not change the substantive disclosure of the proposed sale.

Corporate Governance Expert

TL;DR: This is a standard Rule 144 notice for disposition of vested compensation shares; disclosure satisfies procedural requirements but provides limited strategic insight.

The filing identifies the nature of acquisition (restricted stock vesting) and characterizes payment as compensation, which aligns with executive/employee equity plans. The declaration that no undisclosed material information is known is standard and required. The absence of detailed issuer contact information in the form is an administrative gap but the essential elements for investor notice—share count, value, acquisition date, and proposed sale date—are present.

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	28500	862219.04	121094958	08/25/2025	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	08/22/2025	Restricted Stock Vesting	Issuer			28500	08/22/2025	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
Mark C. Thurmond 6100 Merriweather Drive Columbia MD 21044	Common	05/27/2025	2483	80571.62

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 does the Tenable (TENB) Form 144 report?

The Form 144 reports a proposed sale of 28,500 common shares with aggregate market value of $862,219.04, expected around 08/25/2025, to be executed on NASDAQ.

How were the 28,500 TENB shares acquired?

The shares were acquired on 08/22/2025 through restricted stock vesting from the issuer and the payment is listed as compensation.

Has the filer sold any TENB shares recently?

Yes. The filing discloses a prior sale of 2,483 common shares on 05/27/2025 for gross proceeds of $80,571.62.

On which exchange will the proposed TENB sale occur?

The Form 144 lists the planned sale to occur on NASDAQ.

Does the Form 144 indicate undisclosed material information about Tenable?

The signer represents they do not know any material adverse information about the issuer that has not been publicly disclosed.