Sean Saint - 27 Feb 2026 Form 4/A - Amendment Insider Report for Beta Bionics, Inc. (BBNX)

Role: President & CEO, Director
Signature: /s/ Stephen Feider, Attorney-in-Fact
Issuer symbol: BBNX
Transactions as of: 27 Feb 2026
Net transactions value: $0
Form type: 4/A - Amendment
Filing time: 13 Mar 2026, 16:15:18 UTC
Date Of Original Report: 03 Mar 2026
Previous filing: 04 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Saint Sean	President & CEO, Director	C/O BETA BIONICS, INC., 11 HUGHES, IRVINE	/s/ Stephen Feider, Attorney-in-Fact	13 Mar 2026	0002048593

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	BBNX	Employee Stock Option (right to buy)	Award		+287,944		$0.000000^*	287,944	27 Feb 2026	Common Stock	287,944	$12.63	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The shares subject to this option shall vest in 36 equal monthly installments measured from March 1, 2026.

Remarks:

The purpose of this amendment is to correct the number of shares underlying the option grant that was reported on the reporting person's original Form 4 filed with the Securities and Exchange Commission on March 3, 2026.