[Form 4] Rubrik, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Director Yvonne Wassenaar of Rubrik received a grant of 2,702 restricted stock units (RSUs) on June 25, 2025. The RSUs will vest in four equal installments according to the following schedule:

• 25% vesting on September 15, 2025
• 25% vesting on December 15, 2025
• 25% vesting on March 15, 2026
• 25% vesting on June 15, 2026

The RSUs were granted at a price of $0 and are subject to continuous service requirements. Following this transaction, Wassenaar directly owns 2,855 shares of Rubrik Class A Common Stock. The transaction was reported through Form 4 filing and executed by Larry Guo as attorney-in-fact on June 27, 2025.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Wassenaar Yvonne

(Last) (First) (Middle)

C/O RUBRIK INC.

3495 DEER CREEK ROAD

(Street)

PALO ALTO CA 94304

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Rubrik, Inc. [ RBRK ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
06/25/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	06/25/2025		A(1)		2,702	A	$0	2,855	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents the grant of restricted stock units ("RSUs"). One quarter of the RSUs vest on each of September 15, 2025, December 15, 2025, March 15, 2026 and June 15, 2026, subject to the reporting person's continuous service with the Issuer on each such vest date.

	/s/ Larry Guo, Attorney-in-Fact	06/27/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

How many Rubrik (RBRK) shares did Director Yvonne Wassenaar receive on June 25, 2025?

Director Yvonne Wassenaar received 2,702 restricted stock units (RSUs) of Rubrik's Class A Common Stock on June 25, 2025, granted at a price of $0.

What is the vesting schedule for Yvonne Wassenaar's RBRK RSU grant?

The RSUs vest in four equal installments on: September 15, 2025, December 15, 2025, March 15, 2026, and June 15, 2026. Vesting is subject to Wassenaar's continuous service with Rubrik on each vest date.

How many Rubrik (RBRK) shares does Yvonne Wassenaar own after the June 2025 RSU grant?

Following the RSU grant transaction, Yvonne Wassenaar directly owns 2,855 shares of Rubrik Class A Common Stock.

What is Yvonne Wassenaar's role at Rubrik (RBRK)?

According to the Form 4 filing, Yvonne Wassenaar serves as a Director on Rubrik's Board. She is not listed as an officer or 10% owner of the company.