BBNX files Form 144 to sell 4,222 vested RSU shares

BBNX submitted a Form 144 notice regarding proposed sales of Common Stock linked to Restricted Stock Units vesting under a registered plan.

Rhea-AI Filing Summary

BBNX submitted a Form 144 notice regarding proposed sales of Common Stock linked to Restricted Stock Units vesting under a registered plan. The filing lists 4,222 shares and identifies Morgan Stanley Smith Barney LLC as broker. The securities are described as compensation for services rendered to the issuer with dates anchored 06/01/2026 and 06/02/2026.

Insights

Securities Attorney

Form 144 notifies the market of a planned Rule 144 sale of vested RSU shares.

Form 144 is a statutory notice that a holder intends to sell restricted or control securities under Rule 144. The filing here lists 4,222 shares tied to vesting RSUs and names a broker, which is routine for an anticipated brokered sale.

Timing and final execution depend on Rule 144 conditions and broker placement; subsequent Form 4/Form 144 amendments or a trade confirmation will show completion.

Key Figures

Shares listed: 4,222 shares Broker identified: Morgan Stanley Smith Barney LLC Vesting date: 06/01/2026 +3 more

6 metrics

Shares listed 4,222 shares Common Stock listed for proposed sale on Form 144

Broker identified Morgan Stanley Smith Barney LLC Broker listed on Form 144 (address: 1 New York Plaza)

Vesting date 06/01/2026 Restricted Stock Units vesting under registered plan

Filing/report date 06/02/2026 Date shown in the filing excerpt (NASDAQ row)

Aggregate dollar figure shown $53,999.38 Amount appearing in the excerpt row (exact label not shown)

Numeric code present 44,561,695 Numeric value listed in the excerpt (context not fully specified)

Key Terms

Restricted Stock Units (RSU), Form 144, Rule 144

3 terms

Restricted Stock Units (RSU) financial

"Restricted Stock Units vesting under registered plan"

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.

Rule 144 regulatory

"Securities To Be Sold / Restricted Stock Units vesting under registered plan"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

FAQ

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

What does BBNX's Form 144 report?

It reports an intention to sell restricted shares: 4,222 common shares from vested RSUs. The filing names Morgan Stanley Smith Barney LLC as broker and ties the shares to compensation vested on 06/01/2026.

Are the securities in the BBNX filing free to sell immediately?

The filing indicates RSUs vested under a registered plan, suggesting they may be eligible to sell under Rule 144. Whether sale can occur depends on Rule 144 conditions and broker execution; the Form 144 itself is a notice of intent.

Who is acting as broker for the planned sale in the BBNX filing?

The filing lists Morgan Stanley Smith Barney LLC at 1 New York Plaza as the broker. That identifies the intermediary expected to handle the proposed sale under the reported notice.

Does the Form 144 show proceeds or sale price for BBNX?

No sale price or proceeds are provided in the excerpt. The Form 144 lists share quantity and broker but does not state an offering price or proceeds amount in the visible text.

What dates are tied to the securities in the BBNX Form 144?

The filing references vesting and reporting dates: 06/01/2026 for RSU vesting under the registered plan and 06/02/2026 appearing as a filing/reporting date in the excerpt.

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

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Accepted by SEC EDGAR 06/03/2026 - 05:45 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	0002051384
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	BETA BIONICS, INC.
SEC File Number	001-42491
Address of Issuer	11 HUGHES IRVINE CALIFORNIA 92618
Phone	949-427-7785
Name of Person for Whose Account the Securities are To Be Sold	Steven Jon Russell
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	Officer

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 Stock	Morgan Stanley Smith Barney LLC 1 New York Plaza New York NY 10004	4222	53999.38	44561695	06/02/2026	NASDAQ

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 Stock	06/01/2026	Restricted Stock Units vesting under registered plan	Issuer			4222	06/01/2026	Compensation for services rendered to Issuer

* 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

Nothing to Report

144: Remarks and Signature

Remarks	This is a sell-to-cover transaction for taxes owed related to recent vesting of stock unit awards granted by the Issuer.
Date of Notice	06/03/2026
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	/s/ Stephen Feider, Attorney-in-Fact
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)