<SEC-DOCUMENT>0000950170-25-109205.txt : 20250814
<SEC-HEADER>0000950170-25-109205.hdr.sgml : 20250814
<ACCEPTANCE-DATETIME>20250814214338
ACCESSION NUMBER:		0000950170-25-109205
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20250814
DATE AS OF CHANGE:		20250814

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SELLAS Life Sciences Group, Inc.
		CENTRAL INDEX KEY:			0001390478
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		ORGANIZATION NAME:           	03 Life Sciences
		EIN:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-84090
		FILM NUMBER:		251222240

	BUSINESS ADDRESS:	
		STREET 1:		7 TIMES SQUARE
		STREET 2:		SUITE 2503
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036
		BUSINESS PHONE:		6462005278

	MAIL ADDRESS:	
		STREET 1:		7 TIMES SQUARE
		STREET 2:		SUITE 2503
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Galena Biopharma, Inc.
		DATE OF NAME CHANGE:	20110926

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	RXi Pharmaceuticals Corp
		DATE OF NAME CHANGE:	20110926

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GALENA BIOPHARMA, INC.
		DATE OF NAME CHANGE:	20110922

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Anson Funds Management LP
		CENTRAL INDEX KEY:			0001491072
		ORGANIZATION NAME:           	
		EIN:				300134498
		STATE OF INCORPORATION:			TX
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		16000 DALLAS PARKWAY
		STREET 2:		SUITE 800
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75248
		BUSINESS PHONE:		214.866.0202

	MAIL ADDRESS:	
		STREET 1:		16000 DALLAS PARKWAY
		STREET 2:		SUITE 800
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75248

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Frigate Ventures LP
		DATE OF NAME CHANGE:	20100504
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13G/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
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    <submissionType>SCHEDULE 13G/A</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001491072</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>06/30/2025</eventDateRequiresFilingThisStatement>
      <issuerInfo>
        <issuerCik>0001390478</issuerCik>
        <issuerName>Sellas Life Sciences Group, Inc.</issuerName>
        <issuerCusip>81642T209</issuerCusip>
        <issuerPrincipalExecutiveOfficeAddress>
          <street1 xmlns="http://www.sec.gov/edgar/common">7 TIMES SQUARE, SUITE 2503</street1>
          <city xmlns="http://www.sec.gov/edgar/common">NEW YORK</city>
          <stateOrCountry xmlns="http://www.sec.gov/edgar/common">NY</stateOrCountry>
          <zipCode xmlns="http://www.sec.gov/edgar/common">10036</zipCode>
        </issuerPrincipalExecutiveOfficeAddress>
      </issuerInfo>
      <designateRulesPursuantThisScheduleFiled>
        <designateRulePursuantThisScheduleFiled>Rule 13d-1(b)</designateRulePursuantThisScheduleFiled>
      </designateRulesPursuantThisScheduleFiled>
    </coverPageHeader>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>Anson Funds Management LP</reportingPersonName>
      <citizenshipOrOrganization>TX</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0</soleVotingPower>
        <sharedVotingPower>5225948</sharedVotingPower>
        <soleDispositivePower>0</soleDispositivePower>
        <sharedDispositivePower>5225948</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>5225948</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>4.9</classPercent>
      <typeOfReportingPerson>IA</typeOfReportingPerson>
      <typeOfReportingPerson>PN</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>

      <reportingPersonName>Anson Management GP LLC</reportingPersonName>
      <citizenshipOrOrganization>TX</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0</soleVotingPower>
        <sharedVotingPower>5225948</sharedVotingPower>
        <soleDispositivePower>0</soleDispositivePower>
        <sharedDispositivePower>5225948</sharedDispositivePower>
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      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>5225948</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>4.9</classPercent>
      <typeOfReportingPerson>HC</typeOfReportingPerson>
      <typeOfReportingPerson>OO</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>

      <reportingPersonName>Tony Moore</reportingPersonName>
      <citizenshipOrOrganization>X1</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0</soleVotingPower>
        <sharedVotingPower>5225948</sharedVotingPower>
        <soleDispositivePower>0</soleDispositivePower>
        <sharedDispositivePower>5225948</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>5225948</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>4.9</classPercent>
      <typeOfReportingPerson>HC</typeOfReportingPerson>
      <typeOfReportingPerson>IN</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>

      <reportingPersonName>Anson Advisors Inc.</reportingPersonName>
      <citizenshipOrOrganization>Z4</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0</soleVotingPower>
        <sharedVotingPower>5225948</sharedVotingPower>
        <soleDispositivePower>0</soleDispositivePower>
        <sharedDispositivePower>5225948</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>5225948</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>4.9</classPercent>
      <typeOfReportingPerson>FI</typeOfReportingPerson>
      <typeOfReportingPerson>CO</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>

      <reportingPersonName>Amin Nathoo</reportingPersonName>
      <citizenshipOrOrganization>Z4</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0</soleVotingPower>
        <sharedVotingPower>5225948</sharedVotingPower>
        <soleDispositivePower>0</soleDispositivePower>
        <sharedDispositivePower>5225948</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>5225948</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>4.9</classPercent>
      <typeOfReportingPerson>HC</typeOfReportingPerson>
      <typeOfReportingPerson>IN</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>

      <reportingPersonName>Moez Kassam</reportingPersonName>
      <citizenshipOrOrganization>Z4</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0</soleVotingPower>
        <sharedVotingPower>5225948</sharedVotingPower>
        <soleDispositivePower>0</soleDispositivePower>
        <sharedDispositivePower>5225948</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>5225948</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>4.9</classPercent>
      <typeOfReportingPerson>HC</typeOfReportingPerson>
      <typeOfReportingPerson>IN</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <items>
      <item1>
        <issuerName>Sellas Life Sciences Group, Inc.</issuerName>
        <issuerPrincipalExecutiveOfficeAddress>7 Times Square, Suite 2503, New York, NY 10036.</issuerPrincipalExecutiveOfficeAddress>
      </item1>
      <item2>
        <filingPersonName>Anson Funds Management LP, Anson Management GP LLC, Mr. Tony Moore, Anson Advisors Inc., Mr. Amin Nathoo and Mr. Moez Kassam</filingPersonName>
        <principalBusinessOfficeOrResidenceAddress>For Anson Funds Management LP, Anson Management GP LLC and Mr. Moore:
16000 Dallas Parkway, Suite 800
Dallas, Texas 75248

For Anson Advisors Inc., Mr. Nathoo and Mr. Kassam:
181 Bay Street, Suite 4200 Toronto, ON
M5J 2T3</principalBusinessOfficeOrResidenceAddress>
        <citizenship>Anson Funds Management LP is a limited partnership organized under the laws of the State of Texas. Anson Management GP LLC is a limited liability company organized under the laws of the State of Texas. Mr. Moore is a United States citizen. Anson Advisors Inc. is a corporation organized under the laws of Ontario, Canada. Mr. Nathoo and Mr. Kassam are each Canadian citizens.</citizenship>
      </item2>
      <item3>
        <notApplicableFlag>N</notApplicableFlag>
        <typeOfPersonFiling>IA</typeOfPersonFiling>
        <typeOfPersonFiling>FI</typeOfPersonFiling>
        <otherTypeOfPersonFiling>Canadian Investment Advisor</otherTypeOfPersonFiling>
      </item3>
      <item4>
        <amountBeneficiallyOwned>Anson Funds Management LP, Anson Management GP LLC, Mr. Moore, Anson Advisors Inc., Mr. Nathoo and Mr. Kassam are the beneficial owners of 5,225,948 shares of Common Stock held by the Fund.</amountBeneficiallyOwned>
        <classPercent>Anson Funds Management LP, Anson Management GP LLC, Mr. Moore, Anson Advisors Inc., Mr. Nathoo and Mr. Kassam are the beneficial owners of 4.9% of the outstanding shares of Common Stock, which include shares of Common Stock underlying outstanding warrants (each, a "Warrant," and collectively, the "Warrants") held by Anson Funds Management LP, Anson Management GP LLC, Mr. Moore, Anson Advisors Inc., Mr. Nathoo and Mr. Kassam. Each Warrant includes a beneficial ownership limititation. The Warrants may not be exercised to the extent the Reporting Persons would, in the case of some of the Warrants, beneficially own more than 4.99% of the outstanding Common Stock. The beneficial ownership set forth herein takes into account the foregoing limitation. This percentage is determined by dividing 5,225,948 by 104,728,435, which is the sum of: (i) 99,777,487 shares of Common Stock issued and outstanding, as reported in the Issuer's Quarterly Report on form 10-Q filed with the Securities and Exchange Commission (the "SEC") on May 13, 2025; and (ii) 4,950,948, the number of shares of Common Stock receivable by the Fund upon exercise of the Warrants.</classPercent>
        <numberOfSharesPersonHas>
          <solePowerOrDirectToVote>See Section 4(a)</solePowerOrDirectToVote>
          <sharedPowerOrDirectToVote>See Section 4(a)</sharedPowerOrDirectToVote>
          <solePowerOrDirectToDispose>See Section 4(a)</solePowerOrDirectToDispose>
          <sharedPowerOrDirectToDispose>See Section 4(a)</sharedPowerOrDirectToDispose>
        </numberOfSharesPersonHas>
      </item4>
      <item5>
        <notApplicableFlag>N</notApplicableFlag>
        <classOwnership5PercentOrLess>Y</classOwnership5PercentOrLess>
      </item5>
      <item6>
        <notApplicableFlag>Y</notApplicableFlag>
      </item6>
      <item7>
        <notApplicableFlag>Y</notApplicableFlag>
      </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.

By signing below I certify that, to the best of my knowledge and belief, the foreign regulatory scheme applicable to Anson Advisors Inc. is substantially comparable to the regulatory scheme applicable to the functionally equivalent U.S. institution(s). I also undertake to furnish to the Commission staff, upon request, information that would otherwise be disclosed in a Schedule 13D.
</certifications>
      </item10>
    </items>
    <signatureInformation>
      <reportingPersonName>Anson Funds Management LP</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Tony Moore</signature>
        <title>Tony Moore, Manager</title>
        <date>08/14/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>Anson Management GP LLC</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Tony Moore</signature>
        <title>Tony Moore, Manager</title>
        <date>08/14/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>Tony Moore</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Tony Moore</signature>
        <title>Tony Moore, Manager</title>
        <date>08/14/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>Anson Advisors Inc.</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Amin Nathoo</signature>
        <title>Amin Nathoo, Director</title>
        <date>08/14/2025</date>
      </signatureDetails>
      <signatureDetails>
        <signature>/s/ Moez Kassam</signature>
        <title>Moez Kassam, Director</title>
        <date>08/14/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>Amin Nathoo</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Amin Nathoo</signature>
        <title>Amin Nathoo, Director</title>
        <date>08/14/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>Moez Kassam</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Moez Kassam</signature>
        <title>Moez Kassam, Director</title>
        <date>08/14/2025</date>
      </signatureDetails>
    </signatureInformation>
  </formData>
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</SEC-DOCUMENT>
