<SEC-DOCUMENT>0000899243-22-002911.txt : 20220121
<SEC-HEADER>0000899243-22-002911.hdr.sgml : 20220121
<ACCEPTANCE-DATETIME>20220121182238
ACCESSION NUMBER:		0000899243-22-002911
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210119
FILED AS OF DATE:		20220121
DATE AS OF CHANGE:		20220121

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Fryer Jeffrey M
		CENTRAL INDEX KEY:			0001872879

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40693
		FILM NUMBER:		22547015

	MAIL ADDRESS:	
		STREET 1:		234 CHURCH STREET, SUITE 1020
		CITY:			NEW HAVEN
		STATE:			CT
		ZIP:			06510

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Rallybio Corp
		CENTRAL INDEX KEY:			0001739410
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				851083789
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		234 CHURCH STREET
		STREET 2:		SUITE 1020
		CITY:			NEW HAVEN
		STATE:			CT
		ZIP:			06510
		BUSINESS PHONE:		203- 859-3820

	MAIL ADDRESS:	
		STREET 1:		234 CHURCH STREET
		STREET 2:		SUITE 1020
		CITY:			NEW HAVEN
		STATE:			CT
		ZIP:			06510

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Rallybio Holdings, LLC
		DATE OF NAME CHANGE:	20180502
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-01-19</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001739410</issuerCik>
        <issuerName>Rallybio Corp</issuerName>
        <issuerTradingSymbol>RLYB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001872879</rptOwnerCik>
            <rptOwnerName>Fryer Jeffrey M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O RALLYBIO CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>234 CHURCH STREET, SUITE 1020</rptOwnerStreet2>
            <rptOwnerCity>NEW HAVEN</rptOwnerCity>
            <rptOwnerState>CT</rptOwnerState>
            <rptOwnerZipCode>06510</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>See Remarks</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2022-01-19</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1400</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>8.70</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>44048</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>272609</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>201934</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>201934</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F5"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.01 to $9.00, inclusive. The reporting person undertakes to provide to Rallybio Corporation, any security holder of Rallybio Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (1) to this Form 4.</footnote>
        <footnote id="F2">Shares of common stock are held in a Roth IRA.</footnote>
        <footnote id="F3">Shares of common stock are held in a revocable trust for which Mr. Fryer is the grantor.</footnote>
        <footnote id="F4">Shares of common stock are held in an irrevocable trust for the benefit of one of Mr. Fryer's children. Mr. Fryer disclaims beneficial ownership of such shares.</footnote>
        <footnote id="F5">Shares of common stock are held in an irrevocable trust for the benefit of one of Mr. Fryer's children. Mr. Fryer disclaims beneficial ownership of such shares.</footnote>
    </footnotes>

    <remarks>Chief Financial Officer &amp; Treasurer</remarks>

    <ownerSignature>
        <signatureName>By: /s/ Michael Greco, Attorney-in-Fact</signatureName>
        <signatureDate>2022-01-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
