Rubrik, Inc. — Director's Dealing 2025

Sep 18, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Rubrik, Inc. (RBRK)
CIK: 0001943896
Period of Report: 2025-09-16

Reporting Person: Nithrakashyap Arvind (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-09-16	Class A Common Stock	C	40625	—	Acquired	373698	Direct
2025-09-16	Class A Common Stock	S	40170	$74.21	Disposed	333528	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-09-16	Restricted Stock Unit	$	M	40625	Disposed	2029-08-07	Class B Common Stock (40625)	Direct
2025-09-16	Class B Common Stock	$	M	40625	Acquired		Class A Common Stock (40625)	Direct
2025-09-16	Class B Common Stock	$	C	40625	Disposed		Class A Common Stock (40625)	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Class B Common Stock	$		Class A Common Stock (200000)	200000	Indirect

Footnotes

F1: This sale reported on this Form 4 was effected pursuant to the Issuer's policy requiring sell-to-cover to satisfy certain tax obligations of the Reporting Person incurred with the vesting and settlement of certain Restricted Stock Units (RSUs).

F2: Each RSU represents a contingent right to receive one share of Class B Common Stock.

F3: The shares of Class B Common Stock are to be acquired upon the vesting of an RSU award previously granted to the Reporting Person. The RSUs shall vest as follows: 1/16 of the shares subject to the RSU vest in sixteen equal quarterly installments measured from January 27, 2022 and the Issuer's achievement of a specified average price per share prior to the earlier of (i) the five year anniversary of the effectiveness of the registration statement on Form S-1 filed by the Issuer in connection with the Issuer's initial public offering and (ii) the expiration of the RSU award, subject to the Reporting Person continuing to have a Service Relationship (as defined in the Issuer's Amended and Restated 2014 Stock Option and Grant Plan) as a full time employee of the Issuer on each such date.

F4: Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the Reporting Person into one share of Class A Common Stock.

F5: The shares are held of record by Arvind Nithrakashyap, as Trustee of the Nithrakashyap/Chatterjee Revocable Trust, for which the Reporting Person serves as trustee and shares voting and dispositive power with his spouse.