BBNX affiliate files Form 144 to sell 16,872 shares

Beta Bionics, Inc. affiliate files a Form 144 proposing the resale of 16,872 shares of Common Stock.

Rhea-AI Filing Summary

Beta Bionics, Inc. affiliate files a Form 144 proposing the resale of 16,872 shares of Common Stock. The filing lists an aggregate offering value of $215,792.88 and shows shares outstanding of 44,561,695 as of 06/02/2026. The shares are described as Restricted Stock Units vesting under a registered plan with a vesting date of 06/01/2026. The broker/dealer listed is Morgan Stanley Smith Barney LLC. The filing also reports a prior sale of 3,384 shares on 03/02/2026 for $41,831.65.

Insights

Securities Counsel

Form 144 notifies a planned affiliate resale of vested RSUs totaling 16,872 shares.

The filing identifies 16,872 shares tied to Restricted Stock Units vesting under a registered plan on 06/01/2026 and an aggregate value of $215,792.88. It lists Morgan Stanley Smith Barney LLC as the broker/dealer and reports 44,561,695 shares outstanding as of 06/02/2026. This notice is procedural under Rule 144 and signals intent to resell once conditions are met.

Execution depends on vesting and compliance with resale conditions; cash‑flow treatment is not specified in the excerpt. Subsequent SEC filings or broker disclosures will show actual transactions and timing.

Key Figures

Shares proposed for resale: 16,872 shares Aggregate offering value: $215,792.88 Shares outstanding: 44,561,695 shares +3 more

6 metrics

Shares proposed for resale 16,872 shares Form 144 securities to be sold line

Aggregate offering value $215,792.88 Listed aggregate value on securities information line

Shares outstanding 44,561,695 shares Shares outstanding as of 06/02/2026

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

Shares sold in past 3 months 3,384 shares Sale on 03/02/2026

Proceeds from prior sale $41,831.65 Proceeds reported for 3,384-share sale on 03/02/2026

Key Terms

Form 144, Restricted Stock Units, registered plan

3 terms

Form 144 regulatory

"Common Stock | Morgan Stanley Smith Barney LLC 1 New York Plaza"

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.

Restricted Stock Units financial

"Restricted Stock Units vesting under registered plan | Issuer"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

registered plan regulatory

"Restricted Stock Units vesting under registered plan"

A registered plan is a savings or investment account that a government recognizes for special tax treatment and rules, such as limits on how much you can put in and conditions for withdrawals. For investors it matters because those rules change how much of your gains are taxed, how quickly your money can be accessed and what strategies make sense — like a labeled jar that gives tax breaks but comes with rules about when and how you can take the money out.

FAQ

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

What does the Form 144 for BBNX report?

It reports a proposed resale of 16,872 shares of common stock with an aggregate value of $215,792.88. The shares are described as RSUs vesting under a registered plan on 06/01/2026.

Who is handling the proposed sale listed in the BBNX Form 144?

The broker/dealer named is Morgan Stanley Smith Barney LLC located at 1 New York Plaza, New York. The filing lists that broker in connection with the proposed resale of the shares.

How many shares outstanding does the filing show for BBNX?

The filing shows 44,561,695 shares outstanding as of 06/02/2026. That figure is provided on the same securities information line as the proposed sale details.

Were there any recent sales by the reporting party in the past three months?

Yes. The filing reports a prior sale of 3,384 shares on 03/02/2026 for $41,831.65, listed under "Securities Sold During The Past 3 Months."

Are the shares being sold already vested according to the excerpt?

The shares are described as Restricted Stock Units vesting under a registered plan with a vesting date of 06/01/2026, indicating vesting is the triggering event for potential resale.

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

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Accepted by SEC EDGAR 06/03/2026 - 05:22 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	0002048593
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	Sean Saint
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
Relationship to Issuer	Director

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	16872	215792.88	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			16872	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Sean Saint c/o Beta Bionics, Inc. 11 Hughes Irvine CA 92618	Common Stock	03/02/2026	3384	41831.65

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)