Beta Bionics CFO sells shares for tax withholding

Beta Bionics, Inc. Chief Financial Officer Stephen Feider reported an open-market sale of 6,676 shares of common stock.

Rhea-AI Filing Summary

Beta Bionics, Inc. Chief Financial Officer Stephen Feider reported an open-market sale of 6,676 shares of common stock. The shares were sold on June 2, 2026 primarily to cover tax withholding obligations tied to vesting restricted stock units. The weighted average sale price was $12.6071 per share, with trade prices ranging from $12.30 to $12.93. Following this tax-related sale, Feider directly holds 166,053 shares of Beta Bionics common stock.

Insider Trade Summary

Net Seller: 6,676 shares

Net Sell 1 txn

Insider Feider Stephen

Role Chief Financial Officer

Sold 6,676 shs ($84K)

Type	Security	Shares	Price	Value
Sale	Common Stock	6,676	$12.6071	$84K

Holdings After Transaction: Common Stock — 166,053 shares (Direct)

Footnotes (2)

1. F1. The shares were sold to cover tax withholding obligations associated with the vesting of restricted stock units.
2. F2. The weighted average sale price for the transaction reported was $12.6071 and the range of prices were between $12.30 and $12.93. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided.

Key Figures

Shares sold: 6,676 shares Weighted average sale price: $12.6071 per share Sale price range: $12.30–$12.93 per share +1 more

4 metrics

Shares sold 6,676 shares Open-market sale on June 2, 2026

Weighted average sale price $12.6071 per share Common stock sale on June 2, 2026

Sale price range $12.30–$12.93 per share Range of prices in reported transaction

Shares owned after sale 166,053 shares Direct holdings following the transaction

Key Terms

restricted stock units, weighted average sale price, open-market sale

3 terms

restricted stock units financial

"tax withholding obligations associated with 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.

weighted average sale price financial

"The weighted average sale price for the transaction reported was $12.6071"

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

FAQ

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

What insider transaction did Beta Bionics (BBNX) report for Stephen Feider?

Beta Bionics reported that CFO Stephen Feider sold 6,676 shares of common stock. The sale occurred on June 2, 2026, and was executed in the open market to cover tax withholding obligations from vesting restricted stock units.

At what price did the Beta Bionics (BBNX) CFO sell shares in this Form 4?

The CFO’s shares were sold at a weighted average price of $12.6071 per share. Individual trades occurred within a price range of $12.30 to $12.93, according to the filing’s footnote disclosure.

Why did Beta Bionics (BBNX) CFO Stephen Feider sell 6,676 shares?

The filing states the shares were sold to cover tax withholding obligations linked to the vesting of restricted stock units. This means the transaction was driven by tax requirements rather than a discretionary decision to reduce overall ownership.

How many Beta Bionics (BBNX) shares does the CFO hold after this sale?

After the reported sale, CFO Stephen Feider directly owns 166,053 shares of Beta Bionics common stock. This post-transaction holding figure gives context for the size of the 6,676-share sale relative to his remaining ownership.

Was the Beta Bionics (BBNX) CFO sale considered an open-market transaction?

Yes. The Form 4 describes the transaction as an open-market sale of common stock. Although executed in the market, the filing clarifies that the purpose was to cover tax withholding obligations from vesting restricted stock units.

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

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Accepted by SEC EDGAR 06/03/2026 - 06:00 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Feider Stephen

(Last) (First) (Middle)

C/O BETA BIONICS, INC.

11 HUGHES

(Street)

IRVINE CALIFORNIA 92618

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Beta Bionics, Inc. [ BBNX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Financial Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/02/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	06/02/2026		S(1)		6,676	D	$12.6071(2)	166,053	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The shares were sold to cover tax withholding obligations associated with the vesting of restricted stock units.

2. The weighted average sale price for the transaction reported was $12.6071 and the range of prices were between $12.30 and $12.93. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided.

	/s/ Stephen Feider	06/03/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)