FMR LLC Reports 8.4M Shares (5.3%) of Rubrik

Rubrik Inc ownership filing shows that FMR LLC beneficially owned 8,396,765.01 shares of Class A common stock, representing 5.3% of the class as of 03/31/2026.

Rhea-AI Filing Summary

Rubrik Inc ownership filing shows that FMR LLC beneficially owned 8,396,765.01 shares of Class A common stock, representing 5.3% of the class as of 03/31/2026. The filing states FMR LLC holds sole dispositive power and lists Abigail P. Johnson as having shared dispositive authority via related disclosures.

Insights

Institutional Ownership Analyst

FMR LLC holds a 5.3% stake in Rubrik, a visible institutional position.

FMR LLC reports beneficial ownership of 8,396,765.01 shares (5.3%) as of 03/31/2026, with sole dispositive power listed. This indicates a reportable passive or investment position under Schedule 13G conventions rather than an activist Schedule 13D disclosure.

Future filings could show changes in stake size; timing of any material shift would appear in amendments or a different schedule.

Corporate Governance Expert

Filing documents voting and disposition powers and references a power of attorney.

The schedule lists sole voting and sole dispositive power figures and references a Power of Attorney effective April 13, 2026, incorporated by reference to an exhibit. That paperwork governs authorized signatories and entity reporting.

Stakeholders may note the exhibit and Exhibit 99 for subsidiary or allocation details; subsequent disclosures would provide changes in control or arrangement.

Key Figures

Shares beneficially owned: 8,396,765.01 shares Percent of class: 5.3% Filing type date: 03/31/2026 +1 more

4 metrics

Shares beneficially owned 8,396,765.01 shares Beneficial ownership reported as of 03/31/2026

Percent of class 5.3% Percent of Class A common stock

Filing type date 03/31/2026 Date tied to ownership amount in the schedule

Power of Attorney effective April 13, 2026 Authority date cited for authorized signatory

Key Terms

Schedule 13G, Beneficially owned, Sole dispositive power, Power of Attorney, +1 more

5 terms

Schedule 13G regulatory

"Item 1. Name of issuer: RUBRIK INC and form header"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

Beneficially owned financial

"Item 4. Amount beneficially owned: 8396765.01"

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 dispositive power regulatory

"Item 4. (iii) Sole power to dispose or to direct the disposition of: 8396765.01"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

Power of Attorney legal

"Signed: Duly authorized under Power of Attorney effective as of April 13, 2026"

A power of attorney is a legal document that allows one person to make decisions and act on behalf of another person, often in financial or legal matters. It’s like giving someone a trusted helper or agent the authority to handle important tasks if you are unable to do so yourself. This matters to investors because it can impact how their assets are managed or transferred if they become unable to oversee their affairs.

Exhibit 99 regulatory

"Exhibit Information Please see Exhibit 99 for 13d-1(k) (1) agreement"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What stake does FMR LLC report in Rubrik (RBRK)?

FMR LLC reports beneficial ownership of 8,396,765.01 shares, equal to 5.3% of Rubrik's Class A common stock as of 03/31/2026. The schedule indicates sole dispositive power and provides related signatures and exhibits for authority.

Does the Schedule 13G filing indicate active control or activism?

No; the filing is a Schedule 13G-style ownership disclosure, not a Schedule 13D activist filing. It reports an institutional stake of 5.3% without alleging plans to influence management or seek control.

Who signed the Rubrik ownership filing for FMR LLC?

The filing is signed by Richard Bourgelas as a duly authorized signatory under a Power of Attorney effective April 13, 2026. The submission references Exhibit 24 and Exhibit 99 for supporting agreements.

What powers over the shares does FMR LLC report?

FMR LLC reports sole dispositive power for 8,396,765.01 shares and lists sole voting power figures on the cover responses. Shared voting and shared dispositive power are reported as 0.00 in the excerpt.

Does Abigail P. Johnson appear in the filing and why?

Yes; Abigail P. Johnson is named with beneficial ownership attributed as 8,396,765.01 shares. The filing indicates organizational and power relationships consistent with FMR LLC disclosures and the referenced power of attorney.

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

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Accepted by SEC EDGAR 05/06/2026 - 11:35 AM EDT Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

RUBRIK INC

(Name of Issuer)

CLASS A COMMON STOCK

(Title of Class of Securities)

781154109

(CUSIP Number)

03/31/2026

(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

FMR LLC

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

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 8,338,672.27
6	Shared Voting Power 0.00
7	Sole Dispositive Power 8,396,765.01
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

8,396,765.01

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)

5.3 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

CUSIP Number(s): 781154109

1

Names of Reporting Persons

Abigail P. Johnson

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

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 8,396,765.01
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

8,396,765.01

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)

5.3 %

12

Type of Reporting Person (See Instructions)

IN

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,US,94304
Item 2.
(a)	Name of person filing: FMR LLC
(b)	Address or principal business office or, if none, residence: 245 Summer Street, Boston, Massachusetts 02210
(c)	Citizenship: Not applicable
(d)	Title of class of securities: CLASS A 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: 8396765.01
(b)	Percent of class: 5.3 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: Please see the responses to Items 5 and 6 on the cover page.
	(ii) Shared power to vote or to direct the vote: 0.00
	(iii) Sole power to dispose or to direct the disposition of: 8396765.01
	(iv) Shared power to dispose or to direct the disposition of: 0.00
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. One or more other persons are known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the CLASS A COMMON STOCK of RUBRIK INC. No one other person's interest in the CLASS A COMMON STOCK of RUBRIK INC is more than five percent of the total outstanding CLASS A COMMON STOCK.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. See attached Exhibit 99.
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.

FMR LLC

Signature:	Richard Bourgelas
Name/Title:	Duly authorized under Power of Attorney effective as of April 13, 2026, by and on behalf of FMR LLC and its direct and indirect subsidiaries*
Date:	05/05/2026

Abigail P. Johnson

Signature:	Richard Bourgelas
Name/Title:	Duly authorized under Power of Attorney effective as of April 13, 2026, by and on behalf of Abigail P. Johnson*
Date:	05/05/2026

Comments accompanying signature: *This power of attorney is incorporated herein by reference to Exhibit 24 to the Schedule 13G filed by FMR LLC on April 29,2026, accession number: 0000315066-26-000738.

Exhibit Information

Please see Exhibit 99 for 13d-1(k) (1) agreement.