RBRK 4 Filing - Insider Trading Report

Rubrik, Inc.’s Chief Financial Officer reported an option exercise and related stock sales on December 22, 2025.

Rhea-AI Filing Summary

Rubrik, Inc.’s Chief Financial Officer reported an option exercise and related stock sales on December 22, 2025. The CFO exercised a stock option to acquire 2,000 shares of Class B Common Stock at $7.99 per share, which converted into 2,000 shares of Class A Common Stock and are shown as acquired at $0 in the table. On the same date, the CFO sold 2,600 Class A shares at a weighted average price of $79.02 per share and 900 Class A shares at a weighted average price of $79.93 per share, with actual sale prices ranging from $78.55 to $80.37. These transactions were carried out under a Rule 10b5-1 trading plan adopted on January 15, 2025, and left the CFO with 507,359 Class A shares held directly after the reported trades.

Insider Trade Summary

Exercise and sale activity reported; no spread calculated

Exercise and Sale 6 txns

Insider Choudary Kiran Kumar

Role Chief Financial Officer

Sold 3,500 shs ($277K)

Approx. gross sale proceeds $277K

Approx. exercise cost $16K

Type	Security	Shares	Price	Value
Exercise	Stock Option (Right to Buy)	2,000	$0.00	$0.00
Exercise	Class B Common Stock	2,000	$0.00	$0.00
Conversion	Class B Common Stock	2,000	$0.00	$0.00
Conversion	Class A Common Stock	2,000	$0.00	$0.00
Sale	Class A Common Stock	2,600	$79.02	$205K
Sale	Class A Common Stock	900	$79.93	$72K

Holdings After Transaction: Stock Option (Right to Buy) — 48,450 contracts (Direct); Class B Common Stock — 0 contracts (Direct); Class A Common Stock — 506,459 shares (Direct)

Footnotes (5)

1. F1. This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted January 15, 2025.
2. F2. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $78.55 to $79.51 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. F3. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $79.56 to $80.37 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. F4. 1/4 of the shares subject to the option vested on August 20, 2019, and 1/48 of the shares vested monthly thereafter.
5. F5. 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 will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock.

FAQ

What insider transaction did Rubrik (RBRK) disclose in this filing?

The filing reports that Rubrik’s Chief Financial Officer exercised an option for 2,000 shares and sold a total of 3,500 Class A Common shares on December 22, 2025.

How many Rubrik (RBRK) shares did the CFO sell on December 22, 2025?

The CFO sold 2,600 shares of Class A Common Stock at a weighted average price of $79.02 and 900 shares at a weighted average price of $79.93, for a total of 3,500 shares.

At what prices were the Rubrik (RBRK) shares sold by the CFO?

The 2,600 shares were sold in multiple trades between $78.55 and $79.51 per share, and the 900 shares were sold between $79.56 and $80.37 per share, reported as weighted averages of $79.02 and $79.93, respectively.

How many Rubrik (RBRK) shares does the CFO own after these transactions?

After the reported transactions, the CFO beneficially owns 507,359 shares of Rubrik Class A Common Stock directly, as shown in the filing.

What stock option activity did the Rubrik (RBRK) CFO report?

The CFO exercised a stock option covering 2,000 shares of Class B Common Stock at an exercise price of $7.99 per share, which resulted in 2,000 shares of Class A Common Stock following conversion.

Was the Rubrik (RBRK) CFO’s stock sale under a Rule 10b5-1 plan?

Yes. The sale was effected pursuant to a Rule 10b5-1 trading plan that was adopted on January 15, 2025, as noted in the explanation of responses.

How do Rubrik’s Class B shares held by the CFO convert into Class A shares?

Each share of Class B Common Stock held by the CFO automatically converts into one share of Class A Common Stock upon sale or transfer, and is also convertible at any time at the CFO’s option on a one-for-one basis.

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Accepted by SEC EDGAR 12/23/2025 - 06:36 PM Learn about SEC filing dates

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^*

Choudary Kiran Kumar

(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)
	Chief Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
12/22/2025

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	12/22/2025		C		2,000	A	$0	509,959	D
Class A Common Stock	12/22/2025		S(1)		2,600	D	$79.02(2)	507,359	D
Class A Common Stock	12/22/2025		S(1)		900	D	$79.93(3)	506,459	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
Stock Option (Right to Buy)	$7.99	12/22/2025		M			2,000	(4)	09/17/2028	Class B Common Stock	2,000	$0	48,450	D
Class B Common Stock	(5)	12/22/2025		M		2,000		(5)	(5)	Class A Common Stock	2,000	$0	2,000	D
Class B Common Stock	(5)	12/22/2025		C			2,000	(5)	(5)	Class A Common Stock	2,000	$0	0	D

Explanation of Responses:

1. This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted January 15, 2025.

2. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $78.55 to $79.51 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 $79.56 to $80.37 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. 1/4 of the shares subject to the option vested on August 20, 2019, and 1/48 of the shares vested monthly thereafter.

5. 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 will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock.

	/s/ Larry Guo, Attorney-in-Fact	12/23/2025
	** 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.