Tenable Holdings SEC Filings

Tenable Holdings director George Alex Tosheff had 3,288 restricted stock units (RSUs) vest 100% on September 28, 2025 and the resulting 3,288 shares were acquired on September 29, 2025 at a reported price of $0 per share. After the transaction he beneficially owns 25,282 shares of Tenable common stock. The Form 4 was submitted on behalf of the reporting person and signed by an attorney-in-fact, David Bartholomew, on September 30, 2025. The filing reflects a routine director vesting and share acquisition rather than an open-market purchase or sale.

Seawell A. Brooke, a director of Tenable Holdings, Inc. (TENB), reported insider transactions on 09/09/2025. The filing discloses the sale of common stock in multiple transactions at a weighted average price of $30.80 (range $30.80–$30.82). The Form 4 indicates 15,000 shares were sold (reported with transaction code S) and additional dispositions are listed totaling 9,230 shares. The reporting person acts as trustee of two revocable trusts named in the form. The signature on the filing is by an attorney-in-fact dated 09/11/2025.

Insider transfer of Tenable Holdings (TENB) shares via custodial gift. The Form 4 filed for Raymond Vicks Jr., a director, reports transactions dated 09/05/2025 showing transfers coded "G" (gift). The filing discloses 1,500 shares gifted (disposed) and 1,500 shares recorded as acquired into a custodial account established under the Uniform Transfer to Minors Act for his granddaughter. The reporting person serves as the custodian. Following the reported transactions the form shows 11,766 shares held directly and 4,500 shares held indirectly as custodian. The form is signed by an attorney-in-fact on 09/09/2025.

Tenable Holdings, Inc. (TENB) reported a Rule 144 notice to sell restricted/common stock. The filing discloses a proposed sale of 15,000 common shares through Rockefeller Capital Management with an aggregate market value of $462,040.42, scheduled approximately for 09/09/2025 on NASDAQ. The shares were originally acquired in the company's 07/26/2018 initial public offering and were paid for in cash/check. The filing also lists a recent sale by related parties of 4,622 shares on 09/04/2025 generating $139,114.21 in gross proceeds. The filer certifies no undisclosed material adverse information is known.

Reporting person Seawell A. Brooke, a director of Tenable Holdings, Inc. (TENB), reported transactions dated 09/04/2025. The filing shows a sale/disposition of 4,622 shares of common stock at $30.12 per share (transaction code S) and additional dispositions totaling 9,230 shares and 15,000 shares reported as indirectly owned in trusts. Following the reported transactions, the filing lists 15,000 shares beneficially owned by an indirect trust. The explanatory notes state 4,622 shares were transferred on July 17, 2025, without consideration to the Rosemary and A. Brooke Seawell Revocable Trust; the reporting person is trustee of that trust and of the Alexander Brooke Seawell Revocable Trust. The Form 4 was signed by an attorney-in-fact on 09/05/2025.

Tenable Holdings, Inc. (TENB) Form 144 notifies the SEC of a proposed sale of 4,622 shares of common stock, with an aggregate market value of $139,193.38, to be effected approximately on 09/04/2025 through Fidelity Brokerage Services LLC on NASDAQ. The filing reports 121,094,958 shares outstanding. The shares were acquired via restricted stock vesting on 05/24/2023 and 05/22/2024 (2,600 shares noted for the 2024 vesting) and were received as compensation. The filer reports no securities sold in the past three months. Several issuer and filer contact fields are blank in the provided content and the filer did not state a relationship to the issuer in the portions shown.

Mark C. Thurmond, a Director and Co-Chief Executive Officer of Tenable Holdings, Inc. (TENB), reported a non-discretionary sale of 2,541 shares of common stock on 08/26/2025 at a price of $29.84 per share. The filing states this sale was an automatic "sell-to-cover" to satisfy tax withholding obligations arising from the vesting of restricted stock units, not a voluntary trade. After the transaction the reporting person beneficially owned 105,001 shares. The Form 4 was submitted by an attorney-in-fact and includes no derivative transactions or other dispositions.

Stephen A. Vintz, Co-Chief Executive Officer and director of Tenable Holdings, Inc. (TENB), reported a non-discretionary sale of company stock tied to RSU tax withholding. The Form 4 shows a sell-to-cover transaction on 08/26/2025 disposing of 3,464 shares at $29.84 per share to satisfy tax withholding obligations upon vesting of restricted stock units. After the automatic sale, the reporting person beneficially owned 362,679 shares. The filing indicates the sale was required to cover taxes and was not a voluntary trade by the reporting person.

Tenable Holdings insider sale to satisfy tax withholding after RSU vesting Anschutz Barron, listed as Principal Accounting Officer of Tenable Holdings (TENB), reported the automatic sale of 670 shares of common stock on 08/26/2025 at a price of $29.84 per share. The filing states the sale was a "sell to cover" executed to satisfy tax withholding obligations tied to restricted stock unit vesting and was not a discretionary trade. After the transaction Anschutz Barron beneficially owned 60,365 shares, held directly. The Form 4 was signed by an attorney-in-fact on 08/27/2025.