RBRK holder files notice to sell Class A shares

A holder of RBRK Class A stock filed a notice covering 155 Class A shares.

Rhea-AI Filing Summary

A holder of RBRK Class A stock filed a notice covering 155 Class A shares. The proposed sale, to be executed through Merrill Lynch, Pierce, Fenner & Smith Incorporated in San Francisco on or after July 13, 2026, has an aggregate market value of $12,989, compared with 160,956,763 Class A shares outstanding.

The shares were originally acquired from the issuer in a January 27, 2014 private placement for cash. The filing also lists recent Class A share sales over the prior three months by entities including Lightspeed General Partner Select II, LP and Eggers Investments LP - Fund 2, with individual transactions as large as 50,000 shares for $3,891,955 on June 30, 2026.

Filing Explained

Rubrik’s July 13 Form 144 reports a proposed resale of 155 Class A shares, with no disclosed new issuance or issuer proceeds.

The 2026-07-13 Form 144 reports that a holder proposes to sell 155 Class A shares through Merrill Lynch, with an aggregate market value of $12,989.

This is a proposed-sale notice, not evidence that the sale has completed; if completed, it would transfer the disclosed shares rather than disclose a new Rubrik issuance.

The filing identifies the shares as acquired from the issuer for cash on 2014-01-27 in a private placement. A private placement is a sale of securities to selected investors outside a public offering, and the supplied definition links resale to a later registration statement.

The filing also lists four Class A sale entries during the preceding three months: 10,995 shares, 7,592 shares, 3,979 shares, and 50,000 shares.

No trading plan is disclosed for the proposed sale, making it a sale with no trading plan disclosed in this filing.

The next material state to verify is whether a later filing reports completion of the proposed sale; this notice alone does not establish completion.

Key Figures

Class A shares to be sold: 155 shares Aggregate market value of shares to be sold: 12989 Class A shares outstanding: 160,956,763 shares +5 more

8 metrics

Class A shares to be sold 155 shares Number of RBRK Class A shares covered by the proposed sale notice

Aggregate market value of shares to be sold 12989 Aggregate market value of the 155 Class A shares covered by the notice

Class A shares outstanding 160,956,763 shares Reported number of RBRK Class A shares outstanding

Proposed sale date 07/13/2026 Approximate date of the proposed sale of 155 Class A shares

Prior sale by Lightspeed General Partner Select II, LP 155 shares Class A shares sold on 06/26/2026 for 10995

Prior sale by Lightspeed General Partner IX, LP 7,592 shares Class A shares sold on 06/26/2026 for 538,524

Prior sale by Lightspeed Management Company, LLC 3,979 shares Class A shares sold on 06/26/2026 for 282,244

Prior sale by Eggers Investments LP - Fund 2 50,000 shares Class A shares sold on 06/30/2026 for 3,891,955

Key Terms

Private Placement, Securities Sold During The Past 3 Months, Class A

3 terms

Private Placement financial

"Class A | 01/27/2014 | Private Placement | Issuer | | | 155 | 01/27/2014 | Cash"

A private placement is a sale of securities directly to a selected group of investors, typically institutions or accredited investors, instead of through a public offering. It lets a company raise money faster and with fewer regulatory steps; for existing shareholders it matters because the newly issued shares, often sold at a discount, increase the share count and can dilute their ownership.

Securities Sold During The Past 3 Months financial

"144: Securities Sold During The Past 3 Months Lightspeed General Partner Select II, LP..."

Class A financial

"Class A | Merrill Lynch, Pierce,Fenner & Smith Incorporated 555 California Street..."

Class A denotes a specific group of a company’s shares that carry a particular set of rights—most commonly different voting power or dividend priority compared with other share classes. Think of it like different seats on a bus where some seats let you steer and others only ride: knowing whether a share is Class A tells investors how much influence they have over company decisions and how returns might be distributed, which affects control and value.

FAQ

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

How many RBRK Class A shares are covered by this sale notice?

The notice covers 155 Class A shares of RBRK. These shares have an aggregate market value of $12,989, relative to 160,956,763 Class A shares reported as outstanding.

When were the RBRK Class A shares originally acquired?

The 155 RBRK Class A shares were acquired on January 27, 2014 in a private placement directly from the issuer, with the consideration paid in cash on the same date.

Which broker is expected to handle the RBRK share sale?

The proposed RBRK Class A share sale is designated to be executed through Merrill Lynch, Pierce, Fenner & Smith Incorporated, located at 555 California Street, 18th Floor, San Francisco, CA 94104.

What is the proposed date for the RBRK Class A share sale?

The approximate date for the proposed sale of 155 RBRK Class A shares is July 13, 2026, with the shares listed as trading on the NYSE.

What recent RBRK Class A share sales are disclosed for the past 3 months?

The filing lists several RBRK Class A sales, including 155 shares for 10,995 on June 26, 2026, 7,592 shares for 538,524, 3,979 shares for 282,244 on the same date, and 50,000 shares for 3,891,955 on June 30, 2026.

Who are some of the entities selling RBRK Class A shares in the last 3 months?

Named sellers include Lightspeed General Partner Select II, LP, Lightspeed General Partner IX, LP, Lightspeed Management Company, LLC, and Eggers Investments LP - Fund 2, all reporting RBRK Class A share sales during June 2026.

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

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Accepted by SEC EDGAR 07/13/2026 - 07:26 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001744936
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Rubrik, Inc.
SEC File Number	001-42028
Address of Issuer	3495 Deer Creek Road Palo Alto CALIFORNIA 94304
Phone	844-478-2745
Name of Person for Whose Account the Securities are To Be Sold	Lightspeed General Partner Select II, L.P.
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Affiliate

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Class A	Merrill Lynch, Pierce,Fenner & Smith Incorporated 555 California Street 18th Floor San Francisco CA 94104	155	12989	160956763	07/13/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Class A	01/27/2014	Private Placement	Issuer			155	01/27/2014	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Lightspeed General Partner Select II, LP 2200 Sand Hill Road, Ste 100 Menlo Park CA 94025	Class A	06/26/2026	155	10995
Lightspeed General Partner IX, LP 2200 Sand Hill Road, Ste 100 Menlo Park CA 94025	Class A	06/26/2026	7592	538524
Lightspeed Management Company, LLC 2200 Sand Hill Road, Ste 100 Menlo Park CA 94025	Class A	06/26/2026	3979	282244
Eggers Investments LP - Fund 2 2200 Sand Hill Road, Ste 100 Menlo Park CA 94025	Class A	06/30/2026	50000	3891955

144: Remarks and Signature

Remarks
Date of Notice	07/13/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	Ryan Connor
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)