RBRK (RBRK) holder files notice to sell 44,000 common shares

Rhea-AI Filing Summary

A shareholder of RBRK has filed a notice of proposed sale of 44,000 common shares through Morgan Stanley Smith Barney LLC on or about 01/05/2026, to be sold on the NYSE. The table shows an aggregate market value of $3,320,680.00 for these shares and 151,894,462 common shares outstanding. The shares are to be sold after being acquired the same day by exercising stock options for cash.

Over the prior three months, the same account, identified as the JOHN AND SANDRA THOMPSON TRUST, completed two Rule 10b5-1 common stock sales of 9,009 shares each, with gross proceeds of $619,377.76 and $679,708.33.

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	44000	3320680.00	151894462	01/05/2026	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	01/05/2026	Exercise of Stock Options	Issuer			44000	01/05/2026	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
10b5-1 Sales for JOHN AND SANDRA THOMPSON TRUST 3495 DEER CREEK ROAD Palo Alto CA 94304	Common	12/01/2025	9009	619377.76
10b5-1 Sales for JOHN AND SANDRA THOMPSON TRUST 3495 DEER CREEK ROAD Palo Alto CA 94304	Common	11/03/2025	9009	679708.33

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)

FAQ

What insider share sale is disclosed for RBRK in this notice?

The notice covers a proposed sale of 44,000 shares of common stock of RBRK, to be executed through Morgan Stanley Smith Barney LLC on or about 01/05/2026.

What is the estimated market value of the RBRK shares to be sold?

The filing lists an aggregate market value of $3,320,680.00 for the 44,000 common shares covered by the planned sale.

How many RBRK shares are shown as outstanding in this document?

The securities information table shows 151,894,462 common shares outstanding for the issuer.

How were the 44,000 RBRK shares being sold acquired?

The 44,000 common shares were acquired on 01/05/2026 through an exercise of stock options, with the nature of payment listed as cash.

Were there recent Rule 10b5-1 sales related to RBRK by the same account?

Yes. The JOHN AND SANDRA THOMPSON TRUST completed two Rule 10b5-1 sales of 9,009 common shares each, on 11/03/2025 and 12/01/2025, with gross proceeds of $679,708.33 and $619,377.76, respectively.

What does the signer of this RBRK notice represent about nonpublic information?

The signer represents that they do not know any material adverse information about the issuer’s current or prospective operations that has not been publicly disclosed.