Tenable Holdings, Inc. Form 4 Filings

Tenable Holdings, Inc. (TENB) reported insider equity activity by Chief Financial Officer Matthew Charles Brown. On 2026-08-21, 14,544 Restricted Stock Units (RSUs), each representing one share of common stock, were exercised and converted into 14,544 shares of common stock. Following this conversion, Brown held 174,536 RSUs directly.

On the same date, 7,400 shares of common stock were withheld by Tenable at $34.38 per share to satisfy income tax withholding and remittance obligations in connection with the net settlement of the RSUs; the issuer states this does not represent a sale. The RSUs subject to this award will vest in 16 equal quarterly installments over four years starting November 21, 2025, contingent on continued service and with potential accelerated vesting in specified circumstances. The filing indicates the Rule 10b5-1 trading plan checkbox was not selected.

Tenable Holdings, Inc. (TENB) reported insider equity activity by Chief Accounting Officer Barron Anschutz. On August 24, 2026, 4,224 Restricted Stock Units were exercised or converted into 4,224 shares of common stock. In connection with this net settlement, 2,022 shares of common stock were withheld by the issuer at $33.94 per share to satisfy income tax withholding and remittance obligations, and the filing states this withholding "does not represent a sale." The RSUs vest over time in quarterly installments, subject to continued service and potential accelerated vesting in specified circumstances.

Tenable Holdings, Inc. (TENB) reported that Co-Chief Executive Officer Stephen A. Vintz settled multiple tranches of Performance Restricted Stock Units (PRSUs) and Restricted Stock Units (RSUs) into common stock on August 24, 2026. These derivative exercises converted 27,413 shares of stock units into an equal number of shares of common stock. In connection with the net settlement of these RSUs, the issuer withheld 13,121 shares of common stock at $33.94 per share to satisfy income tax withholding and remittance obligations, which the company states does not represent a sale.

Tenable Holdings, Inc. (TENB) director Linda Kay Zecher reported two open-market sales of common stock. On August 18, 2026 she sold 700 shares at a weighted average price of $35.46, with individual trades between $35.38 and $35.54. On August 19, 2026 she sold 690 shares at a weighted average price of $35.76, with trades between $35.74 and $35.99. The Rule 10b5-1 trading-plan box was not checked.

Tenable Holdings, Inc. director Raymond Jr. Vicks reported an open-market sale of 1,819 shares of common stock on 2026-08-07 at $35.94 per share, executed under a Rule 10b5-1 trading plan. Following the sale, he holds 20,509 shares directly and 4,500 shares indirectly as custodian for his granddaughter under a UTMA custodial account.

Tenable Holdings, Inc. director Linda Kay Zecher reported three sales of common stock. She sold 1,470 shares on August 3, 2026 at $34.00 per share, 600 shares on August 4, 2026 at $36.00 per share, and 550 shares on August 7, 2026 at $36.50 per share. All transactions involved common stock held directly and were characterized as sales in open market or private transactions. The filing’s Rule 10b5‑1 checkbox was not marked as being pursuant to a trading plan.

Stephen A. Vintz, Co-Chief Executive Officer of Tenable Holdings, exercised employee stock options for 423,434 shares of common stock at an exercise price of $16.21 per share. All shares under this option were already fully vested. In connection with this net exercise, 300,736 shares were withheld by the issuer at $36.48 per share to satisfy the exercise price and related tax withholding obligations; this did not involve any market sale of shares.

Tenable Holdings director Margaret M. Keane exercised restricted stock units into common shares. On June 15, 2026, she converted 3,188 restricted stock units into 3,188 shares of common stock at a stated price of $0.00 per share. Following this transaction, she directly holds 20,231 common shares. Footnotes state that each RSU represented one share of common stock and that 100% of the underlying shares had vested as of June 13, 2026.

Tenable Holdings Chief Financial Officer Matthew Charles Brown reported routine equity compensation activity. He exercised 14,544 Restricted Stock Units into the same number of shares of Common Stock, with no exercise price. In connection with this net settlement, 5,219 shares of Common Stock were withheld by Tenable to satisfy income tax withholding obligations, and the footnotes clarify this does not represent a sale.

Following these transactions, Brown directly holds 39,866 shares of Common Stock. He also holds 189,080 Restricted Stock Units, each representing a contingent right to receive one share of Common Stock. These RSUs are scheduled to vest in 16 equal quarterly installments over four years starting November 21, 2025, subject to his continuous service and specified acceleration conditions.

Tenable Holdings, Inc. Chief Accounting Officer Barron Anschutz reported routine equity compensation activity. On May 22, 2026, Anschutz acquired 4,223 shares of common stock through the net settlement of vested Restricted Stock Units (RSUs) and had 2,021 shares withheld by the company at $25.45 per share to cover income tax obligations, which the filing states does not represent a sale. Following these transactions, Anschutz directly holds 73,026 shares of Tenable common stock and continues to hold RSUs that may vest over time under their existing schedules.

Tenable Holdings Co-Chief Executive Officer Stephen A. Vintz reported compensation-related stock activity tied to vesting of restricted stock units and performance restricted stock units on May 22, 2026. He exercised awards covering 27,413 shares of common stock, converting RSUs and PRSUs into regular shares.

To cover income tax obligations from this vesting, 13,121 shares were withheld by the company at a value of $25.45 per share, which the filing notes does not represent an open-market sale. After these transactions, Vintz directly holds 475,587 shares of Tenable common stock.

Tenable Holdings, Inc. Co-Chief Executive Officer Mark C. Thurmond reported routine equity compensation activity. On May 22, 2026, he exercised or converted awards into a total of 25,369 shares of Common Stock tied to Restricted Stock Units and Performance Restricted Stock Units. In connection with these vestings, 12,268 shares were withheld by the company at $25.45 per share to satisfy income tax obligations, and the filing notes these withholdings do not represent sales into the market. Following these transactions, Thurmond directly holds 182,188 shares of Tenable common stock.

Tenable Holdings director George Alex Tosheff reported equity compensation activity involving restricted stock units (RSUs) and common shares. On May 13, 2026, 6,062 RSUs fully vested and were converted into 6,062 shares of common stock, bringing his directly held common shares to 31,344.

On the same date, Tosheff received a new grant of 9,718 RSUs, each representing a right to receive one share of Tenable common stock. These RSUs vest 100% on the earlier of May 13, 2027 or the company’s next annual shareholder meeting, subject to his continued service and specified acceleration conditions.

Tenable Holdings director Raymond Vicks Jr. reported routine equity compensation transactions on May 13, 2026. He exercised previously granted restricted stock units, receiving 6,062 shares of common stock at a stated price of $0.00 per share, and now directly holds 22,328 common shares.

Vicks also received a new award of 9,718 restricted stock units, each representing one share of common stock. These RSUs vest on the earlier of May 13, 2027 or Tenable’s next annual shareholder meeting, subject to his continued service. Separately, 4,500 shares are held indirectly in a Uniform Transfers to Minors Act custodial account for his granddaughter, where he serves as custodian.

Tenable Holdings director Margaret M. Keane reported equity compensation activity. She exercised previously granted restricted stock units, receiving 6,062 shares of common stock, bringing her direct common stock holdings to 17,043 shares after the transaction.

She was also granted 9,718 new restricted stock units, each representing a right to receive one share of Tenable common stock. According to the terms, all shares underlying these RSUs vest on the earlier of May 13, 2027 or Tenable’s next annual shareholder meeting, assuming she continues serving the company, with potential accelerated vesting in certain situations.

Tenable Holdings director Niloofar Razi Howe reported equity compensation activity involving restricted stock units. On May 13, 2026, 6,062 restricted stock units fully vested and were converted into 6,062 shares of common stock, increasing her direct holdings to 29,839 shares.

On the same date, she received a new grant of 9,718 restricted stock units, each representing a contingent right to one share of common stock. These new RSUs vest 100% on the earlier of May 13, 2027 or Tenable’s next annual shareholder meeting, subject to her continued service and certain acceleration conditions.

Tenable Holdings director John C. Huffard Jr. reported routine equity compensation activity involving restricted stock units and common stock. On May 13, 2026, 6,062 RSUs fully vested and were exercised into 6,062 shares of common stock held directly. These RSUs had 100% of the shares underlying them vest as of that date.

On the same day, Huffard received a new grant of 9,718 RSUs, each representing a contingent right to receive one share of Tenable common stock. All shares underlying this new RSU grant vest on the earlier of May 13, 2027 or Tenable’s next annual shareholder meeting, subject to his continued service and specified accelerated vesting conditions.

In addition to his direct holdings, Huffard reports indirect ownership of Tenable common stock through various trusts and his spouse, including 74,575 shares and 390,183 shares held by trusts and 31,847 shares held by his spouse.

Tenable Holdings director Linda Kay Zecher reported equity compensation activity involving common stock and restricted stock units (RSUs). She acquired 6,062 shares of common stock through the exercise of RSUs, bringing her directly held common stock position to 11,022 shares.

On the same date, she received a new grant of 9,718 RSUs, each representing a contingent right to one share of Tenable common stock. All shares underlying a prior RSU award had vested as of May 13, 2026, while the new RSUs vest 100% on the earlier of May 13, 2027 or the company’s next annual shareholder meeting, subject to continued service and certain acceleration conditions.

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.

Tenable Holdings director Alexander Brooke Seawell reported routine equity compensation activity. On May 13, 2026, he received a grant of 9,718 restricted stock units (RSUs), each representing a right to receive one share of Tenable common stock. The filing also shows that 6,062 previously granted RSUs fully vested and were exercised into 6,062 shares of common stock on the same date. Following these transactions, Seawell holds 15,292 shares of common stock directly and 15,000 shares indirectly through the Alexander Brooke Seawell Revocable Trust. The new RSUs vest 100% on the earlier of May 13, 2027 or Tenable’s next annual shareholder meeting, subject to his continued service and certain acceleration conditions.

Tenable Holdings Co-Chief Executive Officer Stephen A. Vintz exercised employee stock options for 105,000 shares of Common Stock at an exercise price of $4.15 per share on May 8, 2026. This converted a derivative option grant into directly held shares.

To cover the exercise price and related tax withholding obligations, 60,917 shares were withheld by the company at a reference value of $21.29 per share, which the filing notes was not a market sale. Following these transactions, Vintz directly holds 472,714 shares of Tenable common stock, and the exercised option covering 105,000 shares is now fully exhausted.

Tenable Holdings, Inc. Chief Financial Officer Matthew Charles Brown reported an open-market purchase of 12,000 shares of Common Stock at a weighted average price of $21.54 per share. After this transaction, he directly holds 30,541 shares.

The shares were acquired in multiple trades at prices ranging from $21.54 to $21.55, according to the filing footnote.

Tenable Holdings, Inc. Chief Accounting Officer Anschutz Barron exercised 2,031 Restricted Stock Units, receiving the same number of common shares. In connection with this vesting on April 16, 2026, 972 common shares were withheld by the company at $19.03 per share to cover income-tax obligations and are explicitly stated not to represent a sale. After these transactions, Barron directly owns 71,673 shares of Tenable common stock.

Anschutz Barron reported acquisition or exercise transactions in this Form 4 filing.

Tenable Holdings, Inc. reported that Chief Accounting Officer Barron Anschutz received a grant of 92,879 restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of Tenable common stock.

According to the award terms, 25% of the RSUs vest on February 22, 2027, with the remaining units vesting in equal quarterly installments over three years, contingent on continued service and subject to possible accelerated vesting in specified circumstances. Following this grant, Anschutz directly holds 69,794 shares of common stock and the newly granted RSUs.

Brown Matthew Charles reported acquisition or exercise transactions in this Form 4 filing.

Tenable Holdings, Inc. Chief Financial Officer Matthew Charles Brown reported an equity grant of 141,898 restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of Tenable common stock. The award was reported at a per-unit price of $0.00, reflecting a compensatory grant rather than a market purchase.

According to the vesting terms, 25% of the shares underlying the RSUs vest on February 22, 2027, with the remaining units vesting in equal quarterly installments over three years, subject to his continued service and potential accelerated vesting in specified circumstances. Following the reported transactions, Brown directly holds 18,541 shares of Tenable common stock, separate from the unvested RSUs.

Tenable Holdings Co-Chief Executive Officer Stephen A. Vintz reported equity compensation changes and related tax withholding. He received a grant of 341,847 Restricted Stock Units (RSUs), each representing one future share of common stock, at no purchase price. Separately, 24,381 Performance RSUs granted in February 2025 were certified at a 97.2% payout, resulting in 25% of the award vesting on February 25, 2026 and the remainder scheduled to vest in equal quarterly installments over three years, subject to continued service and potential accelerated vesting in specified circumstances. The vested performance units converted into 24,381 shares of common stock, and 11,667 shares of common stock were withheld by Tenable at $19.00 per share to satisfy tax obligations, which the company states does not represent a sale.

Tenable Holdings director and Co-Chief Executive Officer Mark C. Thurmond reported multiple equity transactions. He received a grant of 341,847 Restricted Stock Units (RSUs) at no cost, each representing one share of common stock, with 25% vesting on February 22, 2027 and the rest vesting quarterly over three years.

On February 25, 2026, 24,381 Performance RSUs were certified at a 97.2% payout and converted into 24,381 shares of common stock, with 25% vesting immediately and the remainder vesting in equal quarterly installments over three years. The filing also shows 11,789 shares of common stock withheld at $19.00 per share to satisfy tax obligations in connection with RSU settlement, which the footnotes state does not represent a sale.

Tenable Holdings, Inc. Chief Financial Officer Matthew Charles Brown reported equity award activity. He exercised or converted 14,544 Restricted Stock Units into the same number of shares of common stock at $0.00 per share. To cover income tax obligations on this RSU settlement, 5,269 shares of common stock were withheld by the company at a price of $17.55 per share, which the filing notes does not represent a market sale. Following these transactions, Brown directly holds 18,541 shares of common stock and 203,624 RSUs, each RSU representing a contingent right to receive one share of common stock.

Tenable Holdings, Inc. co-CEO Mark C. Thurmond reported multiple equity award transactions involving restricted stock units and performance restricted stock units on Common Stock. Several awards vested and were settled into Common Stock at a price of $0.00 per share.

The transactions include derivative exercises such as 46,586 Restricted Stock Units converting into Common Stock and smaller blocks like 4,368 units, increasing his direct ownership. Separate Form 4 entries show share dispositions coded "F" at $17.55 per share that, according to the footnotes, represent shares withheld by the issuer to satisfy tax obligations rather than open-market sales.

Tenable Holdings, Inc. Chief Accounting Officer Anschutz Barron reported multiple equity award transactions on February 23, 2026. Barron exercised and converted restricted stock units (RSUs) into common stock in several lots, increasing direct ownership to 69,794 shares of common stock.

To cover income tax withholding for these RSU settlements, a total of several thousand shares of common stock were withheld by Tenable at $17.55 per share. A footnote states these F-code transactions represent shares withheld for tax obligations and do not represent market sales. Each RSU corresponds to one share of common stock, with grants vesting 25% on specific February dates and the remainder in equal quarterly installments over three years, subject to continued service and possible accelerated vesting in specified circumstances.

Tenable Holdings Co-Chief Executive Officer Stephen A. Vintz reported multiple equity award settlements and related share withholdings. On February 23, 2026, performance restricted stock units and restricted stock units converted into shares of common stock at no exercise price, reflecting previously granted incentive awards.

To cover income tax obligations from these vestings, the issuer withheld shares of common stock at $17.55 per share in several tax-withholding dispositions, which the disclosure states do not represent sales. After these transactions, Vintz directly held 415,917 shares of Tenable common stock.

Tenable Holdings director Raymond Vicks Jr. reported an open-market purchase of 4,500 shares of common stock on February 12, 2026, at a price of $22.17 per share. Following this trade, he directly owned 16,266 common shares.

In addition, 4,500 common shares are held indirectly for his granddaughter in a custodial account established under the Uniform Transfer to Minors Act, for which he serves as custodian.

Tenable Holdings, Inc. director Arthur W. Coviello Jr. reported an insider trade in the company’s common stock. On February 9, 2026, he was involved in multiple open-market transactions totaling 12,000 shares at a weighted average price of $21.50 per share.

The trades occurred within a price range of $21.47 to $21.51. Following these transactions, Coviello directly held 51,731 shares of Tenable common stock.

Tenable Holdings, Inc. Chief Accounting Officer Anschutz Barron reported routine equity compensation activity. On January 16, 2026, 2,031 Restricted Stock Units converted into the same number of shares of common stock at an exercise price of $0. On the same date, 1,080 shares of common stock were withheld by the company at $22.12 per share to cover income tax withholding and remittance obligations, which the filing notes does not represent a sale. Following these transactions, Barron directly beneficially owned 64,448 shares of Tenable common stock.

Tenable Holdings director reports option exercise and share sale. A reporting person serving as a director of Tenable Holdings, Inc. exercised an employee stock option for 115,000 shares of common stock on 12/15/2025 at an exercise price of $9.66 per share through a revocable trust. On the same day, the trust sold 115,000 shares of common stock in open-market transactions at a weighted average price of $24.82 per share as part of estate administration for the trust. Following these transactions, that trust held 0 shares of Tenable common stock, while the reporting person continued to hold 9,230 shares directly and 15,000 shares through another revocable trust.

Tenable Holdings, Inc. (TENB) filed a Form 4 for its Chief Financial Officer reporting equity award activity on common stock. On 11/21/2025, 14,544 shares of common stock were acquired at a price of $0 through the settlement of previously granted Restricted Stock Units (RSUs), increasing direct common share ownership at that time to 14,544 shares.

Also on 11/21/2025, 5,278 shares of common stock were withheld at a price of $26.06 to cover income tax withholding and remittance obligations tied to the RSU settlement, and this withholding is explicitly described as not representing a sale. After these transactions, the reporting person directly held 9,266 shares of common stock and 218,168 RSUs.

Each RSU represents a contingent right to receive one share of Tenable common stock. The RSUs are scheduled to vest in 16 equal quarterly installments over four years starting on November 21, 2025, subject to continued service and specified accelerated vesting conditions.

Tenable Holdings, Inc. Co-Chief Executive Officer and Director reported multiple equity compensation transactions dated 11/24/2025. Several blocks of Performance Restricted Stock Units (PRSUs) and Restricted Stock Units (RSUs) were converted into shares of common stock (coded "M") at an exercise price of $0, reflecting routine vesting of previously granted awards.

In connection with these vestings, the issuer withheld shares of common stock (coded "F") to cover income tax withholding at a price of $25.68 per share, and these withheld shares are explicitly stated as not representing market sales. After the reported transactions, the reporting person directly beneficially owned 113,639 shares of Tenable common stock, along with remaining unvested PRSUs and RSUs scheduled to vest in quarterly installments, subject to continued service and potential accelerated vesting in specified circumstances.

Tenable Holdings, Inc. (TENB) reported insider equity activity for its Co-Chief Executive Officer and director on 11/24/2025. Multiple blocks of Performance Restricted Stock Units and Restricted Stock Units were converted into shares of common stock at an exercise price of $0, increasing the reporting person's direct holdings.

In connection with these vestings, several transactions at $25.68 per share reflect shares of common stock withheld by Tenable to cover income tax withholding obligations, as explained in the footnotes, and are not open-market sales. Following the reported transactions, the reporting person directly beneficially owned 373,496 shares of Tenable common stock, along with remaining awards of performance and time-based restricted stock units that continue to vest over time, subject to ongoing service conditions and potential accelerated vesting in specified circumstances.

Tenable Holdings, Inc. (TENB) reported insider equity activity on a Form 4 for its Principal Accounting Officer. On 11/24/2025, multiple tranches of Restricted Stock Units (RSUs) were exercised and settled into common stock, reflected with transaction code M at an exercise price of $0.

To cover income tax withholding on these RSU settlements, the issuer withheld shares of common stock, reported with transaction code F, totaling 666, 640, and 602 shares at a price of $25.68 per share, which is explicitly noted as not representing open‑market sales. After the reported transactions, the reporting person directly beneficially owned 63,497 shares of Tenable common stock.

Tenable Holdings, Inc. (TENB) insider filed a Form 4 reporting an RSU vest and related tax sale. On 10/16/2025, 2,031 shares of common stock were acquired at $0 upon RSU vesting. On 10/17/2025, 976 shares were sold at $29.10 in a sell-to-cover transaction to satisfy tax withholding, described as an automatic transaction.

Following these moves, the reporting person beneficially owns 61,420 shares directly. The filing also shows 4,062 restricted stock units outstanding after the transactions.

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.