<SEC-DOCUMENT>0001390202-26-000012.txt : 20260804
<SEC-HEADER>0001390202-26-000012.hdr.sgml : 20260804
<ACCEPTANCE-DATETIME>20260804160348
ACCESSION NUMBER:		0001390202-26-000012
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20260804
DATE AS OF CHANGE:		20260804

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Rallybio Corp
		CENTRAL INDEX KEY:			0001739410
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		ORGANIZATION NAME:           	03 Life Sciences
		EIN:				851083789
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-92742
		FILM NUMBER:		261238444

	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

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Laurion Capital Management LP
		CENTRAL INDEX KEY:			0001390202
		ORGANIZATION NAME:           	
		EIN:				562504425
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		360 MADISON AVENUE
		STREET 2:		SUITE 2000
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017
		BUSINESS PHONE:		212-938-6325

	MAIL ADDRESS:	
		STREET 1:		360 MADISON AVENUE
		STREET 2:		SUITE 2000
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13G/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
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    <submissionType>SCHEDULE 13G/A</submissionType>
    <previousAccessionNumber>0001390202-26-000007</previousAccessionNumber>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001390202</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <coverPageHeader>
      <amendmentNo>1</amendmentNo>
      <securitiesClassTitle>Common Stock, par value $0.0001 per share</securitiesClassTitle>
      <eventDateRequiresFilingThisStatement>06/30/2026</eventDateRequiresFilingThisStatement>
      <issuerInfo>
        <issuerCik>0001739410</issuerCik>
        <issuerName>Rallybio Corp</issuerName>
        <issuerCusips>
          <issuerCusipNumber>75120L209</issuerCusipNumber>
        </issuerCusips>
        <issuerPrincipalExecutiveOfficeAddress>
          <ns1:street1>234 CHURCH STREET</ns1:street1>
          <ns1:street2>SUITE 1020</ns1:street2>
          <ns1:city>NEW HAVEN</ns1:city>
          <ns1:stateOrCountry>CT</ns1:stateOrCountry>
          <ns1:zipCode>06510</ns1:zipCode>
        </issuerPrincipalExecutiveOfficeAddress>
      </issuerInfo>
      <designateRulesPursuantThisScheduleFiled>
        <designateRulePursuantThisScheduleFiled>Rule 13d-1(b)</designateRulePursuantThisScheduleFiled>
      </designateRulesPursuantThisScheduleFiled>
    </coverPageHeader>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>Laurion Capital Management LP</reportingPersonName>
      <citizenshipOrOrganization>DE</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0</soleVotingPower>
        <sharedVotingPower>0</sharedVotingPower>
        <soleDispositivePower>0</soleDispositivePower>
        <sharedDispositivePower>0</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>0</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>0</classPercent>
      <typeOfReportingPerson>IA</typeOfReportingPerson>
      <typeOfReportingPerson>PN</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>
      <reportingPersonName>Benjamin Alexander Smith</reportingPersonName>
      <citizenshipOrOrganization>X1</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0</soleVotingPower>
        <sharedVotingPower>0</sharedVotingPower>
        <soleDispositivePower>0</soleDispositivePower>
        <sharedDispositivePower>0</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>0</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>0</classPercent>
      <typeOfReportingPerson>HC</typeOfReportingPerson>
      <typeOfReportingPerson>IN</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>
      <reportingPersonName>Janaka Sheehan Maduraperuma</reportingPersonName>
      <citizenshipOrOrganization>X0</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0</soleVotingPower>
        <sharedVotingPower>0</sharedVotingPower>
        <soleDispositivePower>0</soleDispositivePower>
        <sharedDispositivePower>0</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>0</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>0</classPercent>
      <typeOfReportingPerson>HC</typeOfReportingPerson>
      <typeOfReportingPerson>IN</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <items>
      <item1>
        <issuerName>Rallybio Corp</issuerName>
        <issuerPrincipalExecutiveOfficeAddress>234 CHURCH STREET, SUITE 1020, NEW HAVEN, CONNECTICUT
06510</issuerPrincipalExecutiveOfficeAddress>
      </item1>
      <item2>
        <filingPersonName>This statement is filed by:

(i) Laurion Capital Management LP ("Laurion Capital"), a Delaware limited partnership, and the investment adviser to certain funds and accounts (the "Laurion Funds"), with respect to the shares of Common Stock (as defined in Item 2(d) below) directly held by the Laurion Funds;

(ii) Mr. Benjamin Alexander Smith ("Mr. Smith"), the co-managing member of Laurion Capital GP LLC, the general partner of Laurion Capital, with respect to the shares of Common Stock directly held by the Laurion Funds.

(iii) Mr. Janaka Sheehan Maduraperuma ("Mr. Maduraperuma"), the co-managing member of Laurion Capital GP LLC, the general partner of Laurion Capital, with respect to the shares of Common Stock directly held by the Laurion Funds.

The foregoing persons are hereinafter sometimes collectively referred to as the "Reporting Persons."

The filing of this statement should not be construed as an admission that any of the forgoing persons or any Reporting Person is, for the the purposes of Section 13 of the Act, the beneficial owner of the shares of Common Stock reported herein.</filingPersonName>
        <principalBusinessOfficeOrResidenceAddress>The address of the business office of each of the Reporting Persons is 360 Madison Avenue, Suite 1900, New York, NY 10017.</principalBusinessOfficeOrResidenceAddress>
        <citizenship>Laurion Capital is a Delaware limited partnership. Mr. Smith is a citizen of the United States. Mr. Maduraperuma is a citizen of the United Kingdom.</citizenship>
      </item2>
      <item3>
        <notApplicableFlag>N</notApplicableFlag>
        <typeOfPersonFiling>IA</typeOfPersonFiling>
        <typeOfPersonFiling>HC</typeOfPersonFiling>
      </item3>
      <item4>
        <amountBeneficiallyOwned>0</amountBeneficiallyOwned>
        <classPercent>0</classPercent>
        <numberOfSharesPersonHas>
          <solePowerOrDirectToVote>Laurion Capital Management LP - 0

Benjamin Alexander Smith - 0

Janaka Sheehan Maduraperuma - 0</solePowerOrDirectToVote>
          <sharedPowerOrDirectToVote>Laurion Capital Management LP - 0

Benjamin Alexander Smith - 0

Janaka Sheehan Maduraperuma - 0</sharedPowerOrDirectToVote>
          <solePowerOrDirectToDispose>Laurion Capital Management LP - 0

Benjamin Alexander Smith - 0

Janaka Sheehan Maduraperuma - 0</solePowerOrDirectToDispose>
          <sharedPowerOrDirectToDispose>Laurion Capital Management LP - 0

Benjamin Alexander Smith - 0

Janaka Sheehan Maduraperuma - 0</sharedPowerOrDirectToDispose>
        </numberOfSharesPersonHas>
      </item4>
      <item5>
        <notApplicableFlag>N</notApplicableFlag>
        <classOwnership5PercentOrLess>Y</classOwnership5PercentOrLess>
      </item5>
      <item6>
        <notApplicableFlag>Y</notApplicableFlag>
      </item6>
      <item7>
        <notApplicableFlag>N</notApplicableFlag>
        <subsidiaryIdentificationAndClassification>See Item 2(a) and Item 3</subsidiaryIdentificationAndClassification>
      </item7>
      <item8>
        <notApplicableFlag>Y</notApplicableFlag>
      </item8>
      <item9>
        <notApplicableFlag>Y</notApplicableFlag>
      </item9>
      <item10>
        <notApplicableFlag>N</notApplicableFlag>
        <certifications>By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.</certifications>
      </item10>
    </items>
    <signatureInformation>
      <reportingPersonName>Laurion Capital Management LP</reportingPersonName>
      <signatureDetails>
        <signature>Jason Riesel</signature>
        <title>Jason Riesel, General Counsel &amp; CCO</title>
        <date>08/04/2026</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>Benjamin Alexander Smith</reportingPersonName>
      <signatureDetails>
        <signature>Benjamin Alexander Smith</signature>
        <title>Benjamin Alexander Smith</title>
        <date>08/04/2026</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>Janaka Sheehan Maduraperuma</reportingPersonName>
      <signatureDetails>
        <signature>Janaka Sheehan Maduraperuma</signature>
        <title>Janaka Sheehan Maduraperuma</title>
        <date>08/04/2026</date>
      </signatureDetails>
    </signatureInformation>
  </formData>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
