Bipul Sinha - 12 Sep 2025 Form 4 Insider Report for Rubrik, Inc. (RBRK)

Role: Chairman of the Board and CEO, Director, 10%+ Owner
Signature: /s/ Larry Guo, Attorney-in-Fact
Issuer symbol: RBRK
Transactions as of: 12 Sep 2025
Net transactions value: -$46,573,483
Form type: 4
Filing time: 12 Sep 2025, 19:17:19 UTC
Previous filing: 13 Dec 2024
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Sinha Bipul	Chairman of the Board and CEO, Director, 10%+ Owner	C/O RUBRIK, INC., 3495 DEER CREEK ROAD, PALO ALTO	/s/ Larry Guo, Attorney-in-Fact	12 Sep 2025	0001685768

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	RBRK	Class A Common Stock	Conversion of derivative security		+765,807	+1352%		822,459	12 Sep 2025	Direct	F1
transaction	RBRK	Class A Common Stock	Sale	$46,573,483	-615,807	-75%	$75.63	206,652	12 Sep 2025	Direct
transaction	RBRK	Class A Common Stock	Gift	$0	-150,000	-73%	$0.000000	56,652	12 Sep 2025	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	RBRK	Class B Common Stock	Conversion of derivative security	$0	-765,807	-6.4%	$0.000000	11,234,839	12 Sep 2025	Class A Common Stock	765,807		Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	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.

Content

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.