[144] Tenable Holdings, Inc. SEC Filing

Rhea-AI Filing Summary

Tenable Holdings, Inc. (TENB) Form 144 shows a proposed sale under Rule 144 of 2,541 common shares through Fidelity Brokerage Services with an aggregate market value of $75,834.62, planned for 08/26/2025 on NASDAQ. The filer reports those shares were acquired on 08/25/2025 via restricted stock vesting and paid as compensation. The filing also lists two recent sales by the same person in the past three months: 2,483 shares (05/27/2025) for $80,571.62 and 28,500 shares (08/25/2025) for $862,219.04. The notice includes the required representation that the seller is unaware of undisclosed material adverse information.

Insights

Financial Analyst

TL;DR Insiders sold vested equity; amounts are disclosed and appear routine relative to outstanding shares.

The filing documents a planned Rule 144 sale of 2,541 vested shares and two recent sales, including a larger sale of 28,500 shares on 08/25/2025. Compared with the reported 121,094,958 shares outstanding, these transactions are small in percentage terms and reflect insider liquidity from compensation vesting rather than an operational event. From a capital-markets perspective, the disclosure meets compliance and transparency expectations but by itself is unlikely to be material to TENB's valuation.

Corporate Governance Expert

TL;DR The filing is a standard Rule 144 disclosure showing compliance; no governance red flags are evident from this notice alone.

The notice states acquisition by restricted stock vesting and that sales were executed through an institutional broker. The seller affirms no undisclosed material adverse information. There is no indication of related-party transactions, unusual timing, or deviations from Rule 144 procedures. As a governance item, this is routine insider reporting that supports transparency but does not indicate governance concerns.

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	2541	75834.62	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			2541	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
Mark C. Thurmond 6100 Merriweather Drive Columbia MD 21044	Common	05/27/2025	2483	80571.62
Mark C. Thurmond 6100 Merriweather Drive Columbia MD 21044	Common	08/25/2025	28500	862219.04

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 Tenable Holdings (TENB) Form 144 report?

The filing reports a proposed Rule 144 sale of 2,541 common shares valued at $75,834.62, with sale date 08/26/2025 on NASDAQ.

When were the shares being sold by the filer acquired?

The securities were acquired on 08/25/2025 through restricted stock vesting and the payment type is listed as compensation.

Did the filer sell other TENB shares recently?

Yes. The filing lists sales of 2,483 shares on 05/27/2025 for $80,571.62 and 28,500 shares on 08/25/2025 for $862,219.04.

Through which broker will the proposed sale occur?

The proposed sale is through Fidelity Brokerage Services LLC, located at 900 Salem Street, Smithfield, RI.

How large are these transactions versus TENB's outstanding shares?

The filing shows 121,094,958 shares outstanding; the planned 2,541-share sale is a very small fraction of total shares outstanding.