Beta Bionics insider plans sale of 40K shares

Company officer Mark Hopman files to sell up to 40,305 BBNX common shares under Rule 144, primarily from option exercises and vested RSUs.

Rhea-AI Filing Summary

Beta Bionics, Inc. (BBNX) officer Mark Hopman has filed a Rule 144 notice indicating an intent to sell up to 40,305 shares of common stock. The filing lists an aggregate market value of approximately $779,095.65 for these shares, to be sold on NASDAQ.

The planned sales include 31,000 shares to be received from the exercise of stock options for cash on September 9, 2026, and 9,305 shares acquired through restricted stock units with an acquisition date of June 1, 2025. The notice states that the securities were and will be acquired upon vesting of restricted stock units and exercises of stock options over the period June 1, 2025 through September 1, 2026, and that acquisition and payment dates were and will be the dates of exercise or sale.

Key Figures

Shares to be sold: 40,305 shares Aggregate market value: $779,095.65 Shares from stock options: 31,000 shares +3 more

6 metrics

Shares to be sold 40,305 shares Total common shares of Beta Bionics, Inc. covered by the Rule 144 notice

Aggregate market value $779,095.65 Market value for the 40,305 common shares covered by the notice

Shares from stock options 31,000 shares Common shares to be received from exercise of stock options dated September 9, 2026

Shares from restricted stock units 9,305 shares Common shares tied to restricted stock units with acquisition date June 1, 2025

Recent sale on September 2, 2026 5,327 shares for $101,815.48 Common stock sold during the past three months

Recent sale on June 24, 2026 1,258 shares for $18,880.44 Common stock sold during the past three months

Key Terms

Rule 144, restricted stock units, stock options, NASDAQ

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

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.

restricted stock units financial

"The securities to be sold were acquired upon the vesting of restricted stock units"

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.

stock options financial

"will be received upon the exercise of stock options over the next three months"

Stock options are agreements that give a person the right to buy or sell a company's stock at a specific price within a certain time frame. They are often used as a reward or incentive, similar to a coupon that can be used later if the stock price rises, allowing the holder to make a profit.

NASDAQ market

"09/09/2026 | NASDAQ"

The Nasdaq is a stock exchange where many companies' shares are bought and sold, functioning much like a marketplace for investments. It matters to investors because it provides a platform to buy and sell ownership stakes in companies, helping them track the value of those companies and make informed decisions. As one of the largest and most technology-focused markets, it also reflects trends and developments in the business world.

FAQ

How many BBNX shares is Mark Hopman planning to sell under this Form 144?

The notice states that up to 40,305 shares of Beta Bionics, Inc. common stock may be sold. These shares are tied to vested restricted stock units and stock options exercised over the period from June 1, 2025 through September 1, 2026.

What is the aggregate market value of the BBNX shares covered by this Form 144?

The filing lists an aggregate market value of approximately $779,095.65 for the 40,305 Beta Bionics, Inc. common shares covered by the notice, with the shares listed for trading on NASDAQ.

How are the BBNX shares in this Form 144 being acquired by Mark Hopman?

According to the notice, the shares were acquired upon the vesting of restricted stock units and will be received upon the exercise of stock options over the period June 1, 2025 through September 1, 2026, with acquisition and payment dates matching the exercise or sale dates.

What specific tranches of BBNX shares are planned for sale in this Form 144?

The filing identifies 31,000 shares to be received from the cash exercise of stock options dated September 9, 2026, and 9,305 shares tied to restricted stock units with an acquisition date of June 1, 2025, together totaling 40,305 shares.

What BBNX share sales has Mark Hopman made in the past three months?

The notice reports that in the past three months Mark Hopman sold 5,327 shares of common stock for $101,815.48 on September 2, 2026, and 1,258 shares for $18,880.44 on June 24, 2026.

Over what timeframe does the Form 144 indicate BBNX shares will be sold?

The remarks state that the securities to be sold were acquired through vesting of restricted stock units from June 1, 2025 through September 1, 2026 and will be received upon stock option exercises over the next three months, with acquisition and payment on the exercise or sale dates.

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

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Available on EDGAR 09/09/2026 - 04:22 PM Accepted by SEC EDGAR 09/09/2026 - 04:22 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	0002048497
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	9494277785
Name of Person for Whose Account the Securities are To Be Sold	MARK HOPMAN
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	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	40305	779095.65	44989688	09/09/2026	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	09/09/2026	Exercise of Stock Options	Issuer			31000	09/09/2026	Cash
Common	06/01/2025	Restricted Stock Units	Issuer			9305	06/01/2025	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
MARK HOPMAN 11 Hughes Irvine CA 92618	Common	09/02/2026	5327	101815.48
MARK HOPMAN 11 Hughes Irvine CA 92618	Common	06/24/2026	1258	18880.44

144: Remarks and Signature

Remarks	The securities to be sold were acquired upon the vesting of restricted stock units during the period of 06/01/2025 through 09/01/2026. The securities to be sold were and will be received upon the exercise of stock options over the next three months. The dates of acquisition and payment were and will be the dates of exercise/sale.
Date of Notice	09/09/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	06/10/2026
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/ Mark Hopman
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)