Beta Bionics (BBNX) CMO sells shares, receives RSU and option awards

Rhea-AI Filing Summary

Beta Bionics, Inc. Chief Medical Officer Russell Steven Jon reported multiple equity transactions. He sold 1,026 shares of common stock in an open-market transaction at a weighted average price of $12.3616 per share, with prices ranging from $12.20 to $12.55, to cover tax withholding obligations from vesting restricted stock units.

He also acquired 109,105 shares of common stock as a grant classified as a restricted stock unit award under the company’s 2025 Equity Incentive Plan. In addition, he received an employee stock option covering 58,749 shares, which is scheduled to vest in 36 equal monthly installments starting from March 1, 2026.

Insider Trade Summary

Net Seller: 1,026 shares ($12,683)

Net Sell 3 txns

Insider Russell Steven Jon

Role Chief Medical Officer

Sold 1,026 shs ($13K)

Type	Security	Shares	Price	Value
Sale	Common Stock	1,026	$12.3616	$13K
Grant/Award	Employee Stock Option (right to buy)	58,749	$0.00	--
Grant/Award	Common Stock	109,105	$0.00	--

Holdings After Transaction: Common Stock — 179,096 shares (Direct); Employee Stock Option (right to buy) — 58,749 shares (Direct)

Footnotes (1)

1. Represents restricted stock unit award granted under the Issuer's 2025 Equity Incentive Plan. The shares were sold to cover tax withholding obligations associated with the vesting of restricted stock units. The weighted average sale price for the transaction reported was $12.3616 and the range of prices were between $12.20 and $12.55. 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. The shares subject to this option shall vest in 36 equal monthly installments measured from March 1, 2026.

Form 4 Insider Transactions: What Each Field Means →

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^*

Russell Steven Jon

(Last) (First) (Middle)

C/O BETA BIONICS, INC.

11 HUGHES

(Street)

IRVINE CA 92618

(City) (State) (Zip)

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 Medical Officer

3. Date of Earliest Transaction (Month/Day/Year)
02/27/2026

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

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

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

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	02/27/2026		A		109,105(1)	A	$0	180,122	D
Common Stock	03/02/2026		S(2)		1,026	D	$12.3616(3)	179,096	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
Employee Stock Option (right to buy)	$12.63	02/27/2026		A		58,749		(4)	02/26/2036	Common Stock	58,749	$0	58,749	D

Explanation of Responses:

1. Represents restricted stock unit award granted under the Issuer's 2025 Equity Incentive Plan.

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

3. The weighted average sale price for the transaction reported was $12.3616 and the range of prices were between $12.20 and $12.55. 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.

4. The shares subject to this option shall vest in 36 equal monthly installments measured from March 1, 2026.

	/s/ Stephen Feider, Attorney-in-Fact	03/03/2026
	** 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.
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FAQ

What insider transactions did Beta Bionics (BBNX) report for its Chief Medical Officer?

Beta Bionics reported that its Chief Medical Officer, Russell Steven Jon, sold 1,026 common shares and received two equity awards. These consisted of a 109,105-share restricted stock unit grant and a 58,749-share employee stock option, all reported as directly owned.

How many Beta Bionics (BBNX) shares did the CMO sell and at what price?

The Chief Medical Officer sold 1,026 shares of Beta Bionics common stock. The weighted average sale price was $12.3616 per share, with individual trade prices ranging between $12.20 and $12.55, according to the reported transaction details and accompanying footnote.

Why did the Beta Bionics (BBNX) Chief Medical Officer sell 1,026 shares?

The 1,026 shares of common stock were sold to cover tax withholding obligations. These obligations arose from the vesting of restricted stock units, as explicitly stated in the transaction footnote, indicating the sale related to tax requirements rather than a discretionary share sale.

What equity awards did the Beta Bionics (BBNX) CMO receive in this filing?

Russell Steven Jon received a restricted stock unit award for 109,105 common shares under the 2025 Equity Incentive Plan and an employee stock option for 58,749 shares. The option is scheduled to vest in 36 equal monthly installments starting from March 1, 2026.

When do the new Beta Bionics (BBNX) stock options for the CMO vest?

The employee stock option granted to the Chief Medical Officer, covering 58,749 shares, will vest in 36 equal monthly installments. The vesting schedule is measured from March 1, 2026, according to the footnote describing the terms of this specific option award.