Vanguard Capital Management (RBRK) discloses 8.1M-share, 5.04% Rubrik Inc holding

Rhea-AI Filing Summary

Vanguard Capital Management LLC, together with certain affiliates, reports beneficial ownership of Rubrik Inc common stock on a Schedule 13G. Vanguard reports beneficial ownership of 8,127,004 shares, representing 5.04% of Rubrik’s outstanding common stock as of June 30, 2026.

Vanguard has sole voting power over 1,241,761 shares and sole dispositive power over 8,127,004 shares, with no shared voting or dispositive power. The position includes securities held by various Vanguard funds and managed accounts for which Vanguard entities exercise dispositive and/or voting power.

Key Figures

Shares beneficially owned: 8,127,004 shares Percent of class owned: 5.04% Sole voting power: 1,241,761 shares +3 more

6 metrics

Shares beneficially owned 8,127,004 shares Rubrik Inc common stock beneficially owned by Vanguard Capital Management as of June 30, 2026

Percent of class owned 5.04% Percentage of Rubrik Inc common stock class reported by Vanguard Capital Management

Sole voting power 1,241,761 shares Rubrik Inc shares for which Vanguard Capital Management has sole power to vote

Shared voting power 0 shares Rubrik Inc shares for which Vanguard Capital Management has shared power to vote

Sole dispositive power 8,127,004 shares Rubrik Inc shares for which Vanguard Capital Management has sole power to dispose

Shared dispositive power 0 shares Rubrik Inc shares for which Vanguard Capital Management has shared power to dispose

Key Terms

beneficially owned, sole voting power, dispositive power, Investment Company Act of 1940

4 terms

beneficially owned financial

"this reflects the securities beneficially owned, or deemed to be beneficially owned, by Vanguard"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

sole voting power financial

"Sole Voting Power 1,241,761.00"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

dispositive power financial

"Sole Dispositive Power 8,127,004.00"

Dispositive power is the authority to decide the final outcome of an asset, legal claim, contract, or corporate action — in effect the power to dispose of or resolve something. For investors it matters because whoever holds that authority can determine who gets paid, who controls an asset or vote, and how risks and returns are allocated; think of it like holding the key that lets you lock in the winner or loser in a deal.

Investment Company Act of 1940 regulatory

"investment companies registered under the Investment Company Act of 1940 and other managed accounts"

A U.S. federal law that sets the rulebook for pooled investment vehicles such as mutual funds, exchange-traded funds and similar money managers, requiring them to register with regulators, disclose holdings and fees, limit conflicts of interest, and follow governance standards. It matters to investors because these protections and transparency rules act like a referee and scoreboard, helping people compare funds, trust that managers follow fair practices, and spot hidden costs or risks.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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FAQ

How many Rubrik Inc (RBRK) shares does Vanguard Capital Management report owning?

Vanguard Capital Management reports beneficial ownership of 8,127,004 Rubrik Inc common shares. This position is held across Vanguard funds and managed accounts for which Vanguard entities exercise dispositive and/or voting power.

What percentage of Rubrik Inc (RBRK) does Vanguard Capital Management own?

Vanguard Capital Management reports owning 5.04% of Rubrik Inc’s common stock. This percentage is based on the total class of Rubrik common shares outstanding as of June 30, 2026.

What voting power does Vanguard Capital Management have over Rubrik Inc (RBRK) shares?

Vanguard Capital Management has sole voting power over 1,241,761 Rubrik shares and no shared voting power. It can vote or direct the vote only for this portion of the total shares it beneficially owns.

What dispositive power does Vanguard Capital Management hold in Rubrik Inc (RBRK)?

Vanguard Capital Management reports sole dispositive power over 8,127,004 Rubrik shares and no shared dispositive power. This means Vanguard entities can decide how to dispose of all shares reported in the filing.

Which Vanguard entities are included in the Rubrik Inc (RBRK) 13G filing?

The filing covers securities beneficially owned or deemed owned by Vanguard Capital Management LLC and affiliates, including Vanguard Asset Management Limited, Vanguard Fiduciary Trust Company, Vanguard Global Advisers, LLC, and Vanguard Investments Australia Ltd.

Does any single Vanguard client own more than 5% of Rubrik Inc (RBRK)?

No. The filing states that no one other person’s interest in the Rubrik securities reported exceeds 5% of the class. The holdings are spread across Vanguard investment companies and other managed accounts.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Rubrik Inc

(Name of Issuer)

Common Stock

(Title of Class of Securities)

781154109

(CUSIP Number)

06/30/2026

(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)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 781154109

1

Names of Reporting Persons

Vanguard Capital Management

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 1,241,761.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 8,127,004.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

8,127,004.00

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)

5.04 %

12

Type of Reporting Person (See Instructions)

IA

Comment for Type of Reporting Person: In accordance with SEC Release No. 34-39538 (January 12, 1998), this Schedule 13G reflects the securities beneficially owned, or deemed to be beneficially owned, by Vanguard Capital Management LLC and the following affiliates of Vanguard Capital Management LLC or business divisions of such affiliates: Vanguard Asset Management Limited, Vanguard Fiduciary Trust Company, Vanguard Global Advisers, LLC and Vanguard Investments Australia Ltd. This Schedule 13G includes securities held by Vanguard funds, or sleeves thereof, over which Vanguard Capital Management LLC exercises dispositive power, in addition to securities held by clients over which the affiliates or business divisions of such affiliates indicated above exercise dispositive and/or voting power. This Schedule 13G does not include securities, if any, beneficially owned by other subsidiaries or affiliates of Vanguard Capital Management LLC, or business divisions of such subsidiaries, whose ownership of securities is disaggregated from that of the reporting business unit in accordance with such release.

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: Vanguard Capital Management
(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 Number(s): 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: 8127004
(b)	Percent of class: 5.04 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 1241761
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 8127004
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
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. Vanguard Capital Management, 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.

Vanguard Capital Management

Signature:	My Trieu-Gatt
Name/Title:	Authorized Signatory, Head of Global Fund Administration
Date:	07/31/2026