144 0001685768 XXXXXXXX LIVE 0001943896 Rubrik, Inc. 001-42028 3495 Deer Creek Road Palo Alto CA 94304 1-844-478-2745 Bipul Sinha Officer Class A Common Goldman Sachs & Co. LLC 200 West Street New York NY 10282 500000 56900000 167367143 09/25/2026 NYSE Class A Common 02/28/2022 Acquired Class B common shares from Issuer in private transaction; Class B common shares were converted to Class A common shares, and subsequently contributed to SBSP EQUITY 1 LLC The Issuer N 30269 02/28/2022 None Class A Common 02/17/2021 Acquired Class B common shares from Issuer in private transaction; Class B common shares were converted to Class A common shares, and subsequently contributed to SBSP EQUITY 1 LLC The Issuer N 469731 02/17/2021 None Y In accordance with the procedures described in the Commission's interpretive letter to Goldman, Sachs & Co. dated 12/20/99, the shares of Class A Common Stock noticed in Section 3(c) of this Form 144 are subject to a pre-paid forward sale contract between an entity of which Mr. Sinha is the sole equity member and the broker named in Section 3(b). The contract provides for an up-front cash payment to the entity based upon the market price of the shares. Upon expiration, the entity will be obligated to deliver a specified number of shares based on the then-current market price at settlement and the agreed forward floor and cap prices. The entity has pledged 500k shares of Mr. Sinha's Class A Common Stock to secure the entity's obligations under the contract. Subject to certain conditions, the entity may elect to cash settle the contract and retain ownership of the pledged shares. Any hedging activity in connection with the contract will be conducted by the broker named in Section 3(b). 09/25/2026 Goldman Sachs & Co. LLC on behalf of Bipul Sinha