<SEC-DOCUMENT>0001213900-21-046727.txt : 20210903
<SEC-HEADER>0001213900-21-046727.hdr.sgml : 20210903
<ACCEPTANCE-DATETIME>20210903184459
ACCESSION NUMBER:		0001213900-21-046727
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20210825
FILED AS OF DATE:		20210903
DATE AS OF CHANGE:		20210903

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Vector Capital Partners V, Ltd
		CENTRAL INDEX KEY:			0001649155
		STATE OF INCORPORATION:			E9
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39560
		FILM NUMBER:		211237836

	BUSINESS ADDRESS:	
		STREET 1:		ONE MARKET STREET, 23RD FL.
		STREET 2:		STEUART TOWER
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94105
		BUSINESS PHONE:		415.293.5000

	MAIL ADDRESS:	
		STREET 1:		ONE MARKET STREET, 23RD FL.
		STREET 2:		STEUART TOWER
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94105

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Vector Acquisition Partners, L.P.
		CENTRAL INDEX KEY:			0001819912
		STATE OF INCORPORATION:			E9
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39560
		FILM NUMBER:		211237837

	BUSINESS ADDRESS:	
		STREET 1:		ONE MARKET STREET, 23RD FLOOR
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94105
		BUSINESS PHONE:		415-293-5000

	MAIL ADDRESS:	
		STREET 1:		ONE MARKET STREET, 23RD FLOOR
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94105

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Rocket Lab USA, Inc.
		CENTRAL INDEX KEY:			0001819994
		STANDARD INDUSTRIAL CLASSIFICATION:	GUIDED MISSILES & SPACE VEHICLES & PARTS [3760]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		3881 MCGOWEN STREET
		CITY:			LONG BEACH
		STATE:			CA
		ZIP:			90808
		BUSINESS PHONE:		714-465-5737

	MAIL ADDRESS:	
		STREET 1:		3881 MCGOWEN STREET
		CITY:			LONG BEACH
		STATE:			CA
		ZIP:			90808

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Vector Acquisition Corp
		DATE OF NAME CHANGE:	20200803
</SEC-HEADER>
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<SEQUENCE>1
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<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-08-25</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0001819994</issuerCik>
        <issuerName>Rocket Lab USA, Inc.</issuerName>
        <issuerTradingSymbol>RKLB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001819912</rptOwnerCik>
            <rptOwnerName>Vector Acquisition Partners, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ONE MARKET STREET, 23RD FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94105</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001649155</rptOwnerCik>
            <rptOwnerName>Vector Capital Partners V, Ltd</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ONE MARKET STREET, 23RD FL.</rptOwnerStreet1>
            <rptOwnerStreet2>STEUART TOWER</rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94105</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <remarks>1. In connection with the consummation of the transactions contemplated by the Agreement and Plan of Merger, dated March 1, 2021, by and among Vector Acquisition Corporation, Rocket Lab USA, Inc. and Prestige USA Merger Sub, as amended to the date hereof, Vector Acquisition Partners, L.P., and its general partner, Vector Capital Partners V, Ltd., ceased to be insiders of the issuer. 2. This Form 4 was previously filed on August 27, 2021 under the wrong CIK# and is being resubmitted under the correct CIK#.</remarks>

    <ownerSignature>
        <signatureName>/s/ See signatures included in Exhibit 99.1</signatureName>
        <signatureDate>2021-08-27</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ See signatures included in Exhibit 99.1</signatureName>
        <signatureDate>2021-08-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
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<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>ea146969ex99-1_rocketlab.htm
<DESCRIPTION>JOINT FILING AGREEMENT
<TEXT>
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<head>
     <title></title>
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<body style="font: 10pt Times New Roman, Times, Serif">

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><b>Exhibit 99.1</b></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">This Statement on Form 4 is filed jointly by Vector
Acquisition Partners, L.P. and Vector Capital Partners V, Ltd. The principal business address of each of these reporting persons is One
Market Street, Steuart Tower, 23rd Floor, San Francisco, CA 94105.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Name of Designated Filer: Vector Acquisition Partners, L.P.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Date of Event Requiring Statement: August 25, 2021</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Issuer Name and Ticker or Trading Symbol: ROCKET LAB USA, INC. (NASDAQ:
RKLB)</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</p>

<table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <tr style="vertical-align: top">
    <td colspan="2"><font style="font-family: Times New Roman, Times, Serif; font-size: 10pt">VECTOR ACQUISITION PARTNERS, L.P.</font></td>
    <td>&nbsp;</td></tr>
  <tr style="vertical-align: top">
    <td style="width: 5%">&nbsp;</td>
    <td style="width: 35%">&nbsp;</td>
    <td style="width: 60%">&nbsp;</td></tr>
  <tr style="vertical-align: top">
    <td><font style="font-family: Times New Roman, Times, Serif; font-size: 10pt">By:</font></td>
    <td><font style="font-family: Times New Roman, Times, Serif; font-size: 10pt">Vector Capital Partners V, Ltd.,</font></td>
    <td>&nbsp;</td></tr>
  <tr style="vertical-align: top">
    <td>&nbsp;</td>
    <td><font style="font-family: Times New Roman, Times, Serif; font-size: 10pt">its general partner</font></td>
    <td>&nbsp;</td></tr>
  <tr style="vertical-align: top">
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td></tr>
  <tr style="vertical-align: top">
    <td style="padding-bottom: 1.5pt"><font style="font-family: Times New Roman, Times, Serif; font-size: 10pt">By:</font></td>
    <td style="border-bottom: Black 1.5pt solid"><font style="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ David Baylor</font></td>
    <td style="padding-bottom: 1.5pt">&nbsp;</td></tr>
  <tr style="vertical-align: top">
    <td><font style="font-family: Times New Roman, Times, Serif; font-size: 10pt">Name:&nbsp;</font></td>
    <td><font style="font-family: Times New Roman, Times, Serif; font-size: 10pt">David Baylor</font></td>
    <td>&nbsp;</td></tr>
  <tr style="vertical-align: top">
    <td><font style="font-family: Times New Roman, Times, Serif; font-size: 10pt">Title:</font></td>
    <td><font style="font-family: Times New Roman, Times, Serif; font-size: 10pt">Authorized Signatory</font></td>
    <td>&nbsp;</td></tr>
  <tr style="vertical-align: top">
    <td colspan="2">&nbsp;</td>
    <td>&nbsp;</td></tr>
  <tr style="vertical-align: top">
    <td colspan="2"><font style="font-family: Times New Roman, Times, Serif; font-size: 10pt">VECTOR CAPITAL PARTNERS V, LTD.</font></td>
    <td>&nbsp;</td></tr>
  <tr style="vertical-align: top">
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td></tr>
  <tr style="vertical-align: top">
    <td style="padding-bottom: 1.5pt"><font style="font-family: Times New Roman, Times, Serif; font-size: 10pt">By:</font></td>
    <td style="border-bottom: Black 1.5pt solid"><font style="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ David Baylor</font></td>
    <td style="padding-bottom: 1.5pt">&nbsp;</td></tr>
  <tr style="vertical-align: top">
    <td><font style="font-family: Times New Roman, Times, Serif; font-size: 10pt">Name:</font></td>
    <td><font style="font-family: Times New Roman, Times, Serif; font-size: 10pt">David Baylor</font></td>
    <td>&nbsp;</td></tr>
  <tr style="vertical-align: top">
    <td><font style="font-family: Times New Roman, Times, Serif; font-size: 10pt">Title:</font></td>
    <td><font style="font-family: Times New Roman, Times, Serif; font-size: 10pt">Authorized Signatory</font></td>
    <td>&nbsp;</td></tr>
  </table>
<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&#160;</p>

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