Rubrik Inc

During the quarter ended October 31, 2024, our directors and officers (as defined in Rule 16a-1(f) under the Exchange Act)adopted orterminated the Rule 10b5-1 trading arrangements (as defined in Item 408(a) of Regulation S-K) described below:

On September 21, 2024, Arvind Nithrakashyap, our Chief Technology Officer, adopted a trading arrangement intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). Mr. Nithrakashyap’s trading arrangement provides for the sale through December 10, 2025 of up to 584,726 shares of our Class A common stock. This represents the maximum number of shares that may be sold pursuant to the 10b5-1 arrangement. The actual number of shares sold will be dependent on the satisfaction of certain conditions set forth in the written plan.

On October 15, 2024, a trust affiliated with John W. Thompson, one of ourdirectors, adopted a trading arrangement intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). This trading arrangement provides for the sale through December 31, 2025 of up to 108,108 shares of our Class A common stock. This represents the maximum number of shares that may be sold pursuant to the 10b5-1 arrangement. The actual number of shares sold will be dependent on the satisfaction of certain conditions set forth in the written plan.