Tenable Holdings Inc

Rule 10b5-1 Plan Elections

Amit Yoran, our Chief Executive Officer, entered into a prearranged stock trading plan on December 4, 2023. Mr. Yoran's plan includes the potential sale of 1,220,000 shares held by Mr. Yoran and 180,000 shares held by the Amit Yoran 2020 Family Trust between March 4, 2024 and February 18, 2025. Of the shares of common stock that may be sold pursuant to Mr. Yoran's plan, 1,220,000 are to be issued upon the exercise of vested options held by Mr. Yoran.

Stephen Vintz, our Chief Financial Officer entered into a prearranged stock trading plan on December 12, 2023. Mr. Vintz's plan includes the potential sale of 305,500 shares of our common stock between March 12, 2024 and September 24, 2024. All of the shares of common stock that may be sold pursuant to Mr. Vintz's plan are shares to be issued upon the exercise of vested stock options.

Raymond Vicks, Jr., amember of our Board of Directors, entered into a prearranged stock trading plan on November 30, 2023. Mr. Vicks' plan includes the potential sale of 2,369 shares of our common stock between February 29, 2024 and May 24, 2024. All of the shares of common stock that may be sold pursuant to Mr. Vicks' plan are shares to be issued upon the vesting of restricted stock units.

All of the aforementioned trading plans were entered into during an open trading window and are intended to satisfy the affirmative defense of Rule 10b5-1(c) under the Exchange Act and our policies regarding insider transactions.