[Form 4] Rubrik, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Rubrik, Inc. insider Form 4 shows planned stock sales by an executive. The company’s President, Global Sales & Field Operations reported selling Class A common stock of Rubrik, Inc. on 12/10/2025 in three transactions under a Rule 10b5-1 trading plan adopted on July 13, 2025.

The executive sold 5,400 shares at a weighted average price of $90.37 per share, 3,900 shares at a weighted average price of $91.24 per share, and 700 shares at a weighted average price of $92.12 per share. After these sales, the reporting person beneficially owned 339,319 shares of Rubrik Class A common stock, held directly.

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

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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

X

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^*

McCarthy Brian K.

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Pres.,Global Sales & Field Ops

3. Date of Earliest Transaction (Month/Day/Year)
12/10/2025

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	12/10/2025		S(1)		5,400	D	$90.37(2)	343,919	D
Class A Common Stock	12/10/2025		S(1)		3,900	D	$91.24(3)	340,019	D
Class A Common Stock	12/10/2025		S(1)		700	D	$92.12(4)	339,319	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. This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted July 13, 2025.

2. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $89.86 to $90.85 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

3. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $90.86 to $91.67 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

4. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $91.94 to $92.25 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

	/s/ Larry Guo, Attorney-in-Fact	12/10/2025
	** 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

What does Rubrik (RBRK) disclose in this Form 4 filing?

The filing reports that Rubrik’s President, Global Sales & Field Operations sold shares of Class A common stock in three transactions on 12/10/2025 and updated his remaining beneficial ownership.

How many Rubrik (RBRK) shares did the insider sell and at what prices?

The executive sold 5,400 shares at $90.37, 3,900 shares at $91.24, and 700 shares at $92.12 per share, with each figure reported as a weighted average price.

How many Rubrik (RBRK) shares does the reporting person still own after these sales?

Following the reported transactions, the insider beneficially owned 339,319 shares of Rubrik Class A common stock in direct ownership.

Were the Rubrik (RBRK) stock sales under a Rule 10b5-1 trading plan?

Yes. The filing states the sale was effected pursuant to a Rule 10b5-1 trading plan that was adopted on July 13, 2025.

What price ranges are associated with the weighted average prices reported for Rubrik (RBRK) share sales?

For the $90.37 weighted average, sales occurred between $89.86 and $90.85. For $91.24, sales ranged from $90.86 to $91.67. For $92.12, sales ranged from $91.94 to $92.25 per share.

Who is the reporting person in this Rubrik (RBRK) Form 4 and what is their role?

The reporting person is an officer of Rubrik, serving as President, Global Sales & Field Operations, and is filing as a single reporting person.