Asheem Chandna - 15 Jan 2026 Form 4 Insider Report for Rubrik, Inc. (RBRK)

Role: Director
Signature: /s/ Larry Guo, Attorney-in-Fact
Issuer symbol: RBRK
Transactions as of: 15 Jan 2026
Net transactions value: $0
Form type: 4
Filing time: 16 Jan 2026, 20:00:09 UTC
Previous filing: 15 Sep 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Chandna Asheem	Director	C/O GREYLOCK PARTNERS, 2550 SAND HILL ROAD, SUITE 200, MENLO PARK	/s/ Larry Guo, Attorney-in-Fact	16 Jan 2026	0001392138

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	RBRK	Class A Common Stock	Award	$0	+513	+0.05%	$0.000000	1,094,154	15 Jan 2026	Direct	F1
holding	RBRK	Class A Common Stock						9,296	15 Jan 2026	By Asheem Chandna and Aarti Chandna, trustees of the Chandna Children's Trust dated 12/23/2012
holding	RBRK	Class A Common Stock						46,484	15 Jan 2026	By The Revocable Trust of Asheem Chandna and Aarti Chandna, UDT 4/13/98
holding	RBRK	Class A Common Stock						345,623	15 Jan 2026	By Greylock 16 Limited Partnership	F2
holding	RBRK	Class A Common Stock						12,287	15 Jan 2026	By Greylock 16-A Limited Partnership	F2
holding	RBRK	Class A Common Stock						26,112	15 Jan 2026	By Greylock 16 Principals Limited Partnership	F2

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

Explanation of Responses:

Id	Content
F1	Represents the grant of restricted stock units that are fully vested as of the date of grant.
F2	Greylock 16 GP LLC ("Greylock 16 GP") is the sole general partner of each of Greylock 16 Limited Partnership ("Greylock 16"), Greylock 16-A Limited Partnership ("Greylock 16-A") and Greylock 16 Principals Limited Partnership ("Greylock 16 Principals") and may be deemed to share voting and dispositive voting power with respect to the shares held directly by Greylock 16, Greylock 16-A and Greylock 16 Principals. The Reporting Person is one of the managing members of Greylock 16 GP, and may be deemed to share voting and investment power over the shares held by Greylock 16, Greylock 16-A and Greylock 16 Principals. The Reporting Person disclaims beneficial ownership of these shares and this report shall not be deemed an admission that he is the beneficial owner of such shares, except to the extent of his pecuniary interest, if any.

Content

Represents the grant of restricted stock units that are fully vested as of the date of grant.

Greylock 16 GP LLC ("Greylock 16 GP") is the sole general partner of each of Greylock 16 Limited Partnership ("Greylock 16"), Greylock 16-A Limited Partnership ("Greylock 16-A") and Greylock 16 Principals Limited Partnership ("Greylock 16 Principals") and may be deemed to share voting and dispositive voting power with respect to the shares held directly by Greylock 16, Greylock 16-A and Greylock 16 Principals. The Reporting Person is one of the managing members of Greylock 16 GP, and may be deemed to share voting and investment power over the shares held by Greylock 16, Greylock 16-A and Greylock 16 Principals. The Reporting Person disclaims beneficial ownership of these shares and this report shall not be deemed an admission that he is the beneficial owner of such shares, except to the extent of his pecuniary interest, if any.