[SCHEDULE 13G/A] Rubrik, Inc. SEC Filing

Rhea-AI Filing Summary

The Vanguard Group reported beneficial ownership of 12,769,717 shares of Rubrik Inc common stock, representing 10.33% of the class. Vanguard discloses sole dispositive power over 11,899,499 shares and shared voting power over 747,039 shares. The filing identifies Rubrik's principal office in Palo Alto, CA, and lists Vanguard's address in Malvern, PA. The filing states the securities were acquired and are held in the ordinary course of business and not for the purpose of changing control. The statement is signed by Ashley Grim, Head of Global Fund Administration, dated 09/08/2025.

Positive

• Beneficial ownership of 12,769,717 shares representing 10.33% of Rubrik's common stock is clearly disclosed
• Sole dispositive power over 11,899,499 shares indicates Vanguard controls disposition of the majority of its reported holdings
• Filing includes required certifications and signature (Ashley Grim, Head of Global Fund Administration, dated 09/08/2025)

Negative

• No sole voting power reported (0 shares), indicating Vanguard does not unilaterally control voting decisions
• Shared voting and dispositive powers (747,039 and 870,218 shares) suggest voting authority is distributed across accounts

Insights

Financial Analyst

TL;DR: Vanguard holds a material 10.33% stake in Rubrik with substantial dispositive authority but limited sole voting power.

From an ownership perspective, a 10.33% beneficial stake is material and may attract investor attention because it exceeds common 5% reporting thresholds. The filing shows Vanguard exercises sole dispositive power over the majority of its reported shares (11,899,499) while recording zero sole voting power, indicating voting authority is largely shared or delegated across accounts. The declaration that shares are held in the ordinary course of business and not to influence control is standard for investment advisers managing client portfolios.

Corporate Governance Expert

TL;DR: Disclosure is complete for a Schedule 13G/A: identifies beneficial ownership, voting/dispositive breakdown, and certifies non-control intent.

The filing contains the required elements: issuer identity, CUSIP, reporting person, ownership percentages, and the allocation of voting and dispositive powers. Notably, shared voting power of 747,039 and shared dispositive power of 870,218 are reported, and no group or subsidiary attribution is claimed. The signed certification and date provide the necessary attestations under Schedule 13G rules.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Rubrik Inc

(Name of Issuer)

Common Stock

(Title of Class of Securities)

781154109

(CUSIP Number)

08/29/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 781154109

1

Names of Reporting Persons

The Vanguard Group

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 747,039.00
7	Sole Dispositive Power 11,899,499.00
8	Shared Dispositive Power 870,218.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

12,769,717.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

10.33 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Rubrik Inc
(b)	Address of issuer's principal executive offices: 3495 Deer Creek Road, Palo Alto, CA, 94304
Item 2.
(a)	Name of person filing: The Vanguard Group
(b)	Address or principal business office or, if none, residence: 100 Vanguard Blvd., Malvern, PA 19355
(c)	Citizenship: PA
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 781154109
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 12769717
(b)	Percent of class: 10.33 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 747039
	(iii) Sole power to dispose or to direct the disposition of: 11899499
	(iv) Shared power to dispose or to direct the disposition of: 870218
Item 5.	Ownership of 5 Percent or Less of a Class.
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. The Vanguard Group, Inc.'s clients, including investment companies registered under the Investment Company Act of 1940 and other managed accounts, have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the securities reported herein. No one other person's interest in the securities reported herein is more than 5%.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

The Vanguard Group

Signature:	Ashley Grim
Name/Title:	Head of Global Fund Administration
Date:	09/08/2025

FAQ

How many Rubrik (RBRK) shares does The Vanguard Group report owning?

The filing reports 12,769,717 shares beneficially owned by The Vanguard Group.

What percentage of Rubrik does Vanguard's holding represent?

Vanguard's reported position represents 10.33% of Rubrik's common stock class.

Does Vanguard have voting control over its Rubrik shares?

Vanguard reports 0 sole voting power and 747,039 shared voting power for these shares.

Who signed the Schedule 13G/A for Vanguard and when?

The form is signed by Ashley Grim, Head of Global Fund Administration, dated 09/08/2025.

Was the Rubrik position reported as held to influence control of the issuer?

The filing certifies the securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control.