RBRK (RBRK) insider files Form 144 to sell 7,500 common shares

Rhea-AI Filing Summary

RBRK insiders have filed a notice of proposed sales of 7,500 shares of common stock through Morgan Stanley Smith Barney LLC Executive Financial Services, with a proposed sale date of 08/03/2026. The filing lists an aggregate market value of approximately $542,700.00 for these shares, while total common shares outstanding are shown as 160,956,763, a baseline figure rather than the amount being sold.

The 7,500 shares to be sold were originally obtained on 02/26/2014 via a private acquisition from the issuer. The filing also discloses recent Rule 10b5-1 plan sales in the past three months, including sales by the JOHN AND SANDRA THOMPSON TRUST and by JOHN W THOMPSON on 06/01/2026 and 07/01/2026, detailing both share counts and dollar proceeds for each transaction.

Key Figures

Shares to be sold: 7,500 shares Aggregate market value of proposed sale: $542,700.00 Shares outstanding: 160,956,763 shares +5 more

8 metrics

Shares to be sold 7,500 shares Proposed common stock sale under Form 144

Aggregate market value of proposed sale $542,700.00 Value of 7,500 shares of common stock to be sold

Shares outstanding 160,956,763 shares Common shares outstanding of issuer, provided as context

Planned sale date 08/03/2026 Proposed date for Form 144 share sale

10b5-1 sale 07/01/2026 trust 2,500 shares; $206,873.00 JOHN AND SANDRA THOMPSON TRUST 10b5-1 sale

10b5-1 sale 07/01/2026 John W Thompson 11,000 shares; $909,146.70 10b5-1 sale of common stock by John W Thompson

10b5-1 sale 06/01/2026 trust 2,500 shares; $211,274.50 JOHN AND SANDRA THOMPSON TRUST 10b5-1 sale

10b5-1 sale 06/01/2026 John W Thompson 11,000 shares; $930,026.90 10b5-1 sale of common stock by John W Thompson

Key Terms

Form 144, 10b5-1 Sales, Private Acquisition from Issuer, Executive Financial Services

4 terms

Form 144 regulatory

"Filer Information | | | 144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

10b5-1 Sales regulatory

"10b5-1 Sales for JOHN AND SANDRA THOMPSON TRUST 3495"

10b5-1 sales are pre-arranged stock-trading plans that let company insiders automatically buy or sell shares according to a fixed schedule or formula, even if they later learn confidential information. Think of it as setting up an automatic thermostat for trades: it creates a clear, documented path that can protect insiders from insider-trading accusations and gives investors a signal about predictable insider activity—though it can also simply be a way for insiders to diversify or raise cash.

Private Acquisition from Issuer financial

"Common | 02/26/2014 | Private Acquisition from Issuer | Issuer"

Executive Financial Services financial

"Common | Morgan Stanley Smith Barney LLC Executive Financial Services"

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

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Available on EDGAR 08/03/2026 - 04:48 PM Accepted by SEC EDGAR 08/03/2026 - 04:47 PM Learn about SEC filing dates

FAQ

What does the Form 144 filing for RBRK disclose about upcoming stock sales?

The filing indicates a proposed sale of 7,500 common shares of RBRK stock, with an aggregate market value of about $542,700.00, to be sold through Morgan Stanley Smith Barney LLC Executive Financial Services on or after 08/03/2026.

How many RBRK shares are outstanding according to this Form 144?

The document lists 160,956,763 common shares outstanding. This figure is provided as background context on the issuer’s capital structure and is separate from the 7,500 shares covered by the proposed sale notice.

What is the origin of the 7,500 RBRK shares covered by the Form 144?

The 7,500 shares to be sold were acquired on 02/26/2014 through a private acquisition from the issuer. The filing identifies the transaction type as a private acquisition directly from the company, not a market purchase.

What recent 10b5-1 sales related to RBRK are disclosed in this filing?

The filing lists Rule 10b5-1 sales on 06/01/2026 and 07/01/2026 by JOHN W THOMPSON and the JOHN AND SANDRA THOMPSON TRUST, detailing multiple transactions that together involve several thousand shares of RBRK common stock and associated dollar proceeds.

Who is executing the planned RBRK share sale noted in the Form 144?

The proposed sale of 7,500 RBRK shares will be executed through Morgan Stanley Smith Barney LLC Executive Financial Services, listed at 1 New York Plaza, New York, which is named as the broker handling the transaction.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	7500	542700.00	160956763	08/03/2026	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 *
Common	02/26/2014	Private Acquisition from Issuer	Issuer			7500	02/26/2014	N/A

* 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
10b5-1 Sales for JOHN AND SANDRA THOMPSON TRUST 3495 DEER CREEK ROAD Palo Alto CA 94304	Common	07/01/2026	2500	206873.00
10b5-1 Sales for JOHN W THOMPSON 3495 DEER CREEK ROAD Palo Alto CA 94304	Common	07/01/2026	11000	909146.70
10b5-1 Sales for JOHN AND SANDRA THOMPSON TRUST 3495 DEER CREEK ROAD Palo Alto CA 94304	Common	06/01/2026	2500	211274.50
10b5-1 Sales for JOHN W THOMPSON 3495 DEER CREEK ROAD Palo Alto CA 94304	Common	06/01/2026	11000	930026.90

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)