<SEC-DOCUMENT>0000950170-25-010733.txt : 20250129
<SEC-HEADER>0000950170-25-010733.hdr.sgml : 20250129
<ACCEPTANCE-DATETIME>20250129215312
ACCESSION NUMBER:		0000950170-25-010733
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20250129
FILED AS OF DATE:		20250129
DATE AS OF CHANGE:		20250129

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Wellington Hadley Harbor Aggregator IV, L.P.
		CENTRAL INDEX KEY:			0002053997
		ORGANIZATION NAME:           	
		STATE OF INCORPORATION:			DE

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-42491
		FILM NUMBER:		25570929

	BUSINESS ADDRESS:	
		STREET 1:		280 CONGRESS STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02210
		BUSINESS PHONE:		617-951-5000

	MAIL ADDRESS:	
		STREET 1:		280 CONGRESS STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02210

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Beta Bionics, Inc.
		CENTRAL INDEX KEY:			0001674632
		STANDARD INDUSTRIAL CLASSIFICATION:	SURGICAL & MEDICAL INSTRUMENTS & APPARATUS [3841]
		ORGANIZATION NAME:           	08 Industrial Applications and Services
		IRS NUMBER:				475386878
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		11 HUGHES
		CITY:			IRVINE
		STATE:			CA
		ZIP:			92618
		BUSINESS PHONE:		949-427-7785

	MAIL ADDRESS:	
		STREET 1:		11 HUGHES
		CITY:			IRVINE
		STATE:			CA
		ZIP:			92618

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Beta Bionics, Inc
		DATE OF NAME CHANGE:	20160513
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>ownership.xml
<DESCRIPTION>3
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2025-01-29</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001674632</issuerCik>
        <issuerName>Beta Bionics, Inc.</issuerName>
        <issuerTradingSymbol>BBNX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0002053997</rptOwnerCik>
            <rptOwnerName>Wellington Hadley Harbor Aggregator IV, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O WELLINGTON MANAGEMENT COMPANY LLP</rptOwnerStreet1>
            <rptOwnerStreet2>280 CONGRESS STREET</rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02210</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>false</isDirector>
            <isOfficer>false</isOfficer>
            <isTenPercentOwner>true</isTenPercentOwner>
            <isOther>false</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Series E Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class B Common Stock</value>
                    <footnoteId id="F2"/>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2901599</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Each share of Series E Preferred Stock (the &quot;Preferred Stock&quot;) is convertible into shares of Class B Common Stock of the Issuer on a one-for-one basis without payment of further consideration. Upon the closing of the Issuer's initial public offering (the &quot;IPO&quot;), the Preferred Stock will convert into the number of shares of Class B Common Stock of the Issuer shown in column 3 and subsequently into an equal number of shares of Common Stock of the Issuer. The Preferred Stock has no expiration date.</footnote>
        <footnote id="F2">In accordance with the Issuer's Amended and Restated Certificate of Incorporation, the Issuer's outstanding shares of Class B Common Stock will convert into an equal number of shares of Common Stock immediately prior to the closing of the IPO.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Wellington Hadley Harbor Aggregator IV, L.P., By: Wellington Management Company LLP, as Investment Adviser, /s/ Jennifer C. Boylan, Authorized Person</signatureName>
        <signatureDate>2025-01-29</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
