<SEC-DOCUMENT>0000921895-25-002825.txt : 20251029
<SEC-HEADER>0000921895-25-002825.hdr.sgml : 20251029
<ACCEPTANCE-DATETIME>20251029172459
ACCESSION NUMBER:		0000921895-25-002825
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20251029
DATE AS OF CHANGE:		20251029

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Compass Therapeutics, Inc.
		CENTRAL INDEX KEY:			0001738021
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		ORGANIZATION NAME:           	03 Life Sciences
		EIN:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-90878
		FILM NUMBER:		251431176

	BUSINESS ADDRESS:	
		STREET 1:		80 GUEST STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02135
		BUSINESS PHONE:		617-500-8099

	MAIL ADDRESS:	
		STREET 1:		80 GUEST STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02135

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Olivia Ventures, Inc.
		DATE OF NAME CHANGE:	20180419

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BIOTECHNOLOGY VALUE FUND L P
		CENTRAL INDEX KEY:			0000918923
		STANDARD INDUSTRIAL CLASSIFICATION:	INVESTMENT ADVICE [6282]
		ORGANIZATION NAME:           	02 Finance
		EIN:				363924731
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G

	BUSINESS ADDRESS:	
		STREET 1:		44 MONTGOMERY STREET
		STREET 2:		40TH FL
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94104
		BUSINESS PHONE:		3125066500

	MAIL ADDRESS:	
		STREET 1:		44 MONTGOMERY STREET
		STREET 2:		40TH FL
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94104
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13G
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
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      <eventDateRequiresFilingThisStatement>10/22/2025</eventDateRequiresFilingThisStatement>
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        <issuerCik>0001738021</issuerCik>
        <issuerName>Compass Therapeutics, Inc.</issuerName>
        <issuerCusip>20454B104</issuerCusip>
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          <com:street1>80 GUEST STREET</com:street1>
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          <com:zipCode>02135</com:zipCode>
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      <reportingPersonName>BVF I GP LLC</reportingPersonName>
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      <reportingPersonName>BIOTECHNOLOGY VALUE FUND II LP</reportingPersonName>
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      <reportingPersonName>BVF II GP LLC</reportingPersonName>
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        <soleVotingPower>0.00</soleVotingPower>
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        <sharedDispositivePower>3396894.00</sharedDispositivePower>
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      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>3396894.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>2.0</classPercent>
      <typeOfReportingPerson>OO</typeOfReportingPerson>
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    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>Biotechnology Value Trading Fund OS LP</reportingPersonName>
      <memberGroup>a</memberGroup>
      <citizenshipOrOrganization>E9</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0.00</soleVotingPower>
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        <soleDispositivePower>0.00</soleDispositivePower>
        <sharedDispositivePower>542486.00</sharedDispositivePower>
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      <reportingPersonName>BVF Partners OS Ltd.</reportingPersonName>
      <memberGroup>a</memberGroup>
      <citizenshipOrOrganization>E9</citizenshipOrOrganization>
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        <soleVotingPower>0.00</soleVotingPower>
        <sharedVotingPower>542486.00</sharedVotingPower>
        <soleDispositivePower>0.00</soleDispositivePower>
        <sharedDispositivePower>542486.00</sharedDispositivePower>
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      <typeOfReportingPerson>CO</typeOfReportingPerson>
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    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>BVF GP HOLDINGS LLC</reportingPersonName>
      <memberGroup>a</memberGroup>
      <citizenshipOrOrganization>DE</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0.00</soleVotingPower>
        <sharedVotingPower>8070444.00</sharedVotingPower>
        <soleDispositivePower>0.00</soleDispositivePower>
        <sharedDispositivePower>8070444.00</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>8070444.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
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      <classPercent>4.7</classPercent>
      <typeOfReportingPerson>OO</typeOfReportingPerson>
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    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>BVF PARTNERS L P/IL</reportingPersonName>
      <memberGroup>a</memberGroup>
      <citizenshipOrOrganization>DE</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0.00</soleVotingPower>
        <sharedVotingPower>8750000.00</sharedVotingPower>
        <soleDispositivePower>0.00</soleDispositivePower>
        <sharedDispositivePower>8750000.00</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>8750000.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
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      <typeOfReportingPerson>PN</typeOfReportingPerson>
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    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>BVF INC/IL</reportingPersonName>
      <memberGroup>a</memberGroup>
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        <soleVotingPower>0.00</soleVotingPower>
        <sharedVotingPower>8750000.00</sharedVotingPower>
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        <sharedDispositivePower>8750000.00</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>8750000.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
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      <typeOfReportingPerson>CO</typeOfReportingPerson>
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    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>LAMPERT MARK N</reportingPersonName>
      <memberGroup>a</memberGroup>
      <citizenshipOrOrganization>X1</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0.00</soleVotingPower>
        <sharedVotingPower>8750000.00</sharedVotingPower>
        <soleDispositivePower>0.00</soleDispositivePower>
        <sharedDispositivePower>8750000.00</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>8750000.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>5.1</classPercent>
      <typeOfReportingPerson>IN</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <items>
      <item1>
        <issuerName>Compass Therapeutics, Inc.</issuerName>
        <issuerPrincipalExecutiveOfficeAddress>80 GUEST STREET, BOSTON, MASSACHUSETTS 02135</issuerPrincipalExecutiveOfficeAddress>
      </item1>
      <item2>
        <filingPersonName>Biotechnology Value Fund, L.P. ("BVF")

BVF I GP LLC ("BVF GP")

Biotechnology Value Fund II, L.P. ("BVF2")

BVF II GP LLC ("BVF2 GP")

Biotechnology Value Trading Fund OS LP ("Trading Fund OS")

BVF Partners OS Ltd. ("Partners OS")

BVF GP Holdings LLC ("BVF GPH")

BVF Partners L.P. ("Partners")

BVF Inc.

Mark N. Lampert ("Mr. Lampert")

Each of the foregoing is referred to as a "Reporting Person" and collectively as the "Reporting Persons."</filingPersonName>
        <principalBusinessOfficeOrResidenceAddress>Biotechnology Value Fund, L.P.
44 Montgomery St., 40th Floor
San Francisco, California 94104

BVF I GP LLC
44 Montgomery St., 40th Floor
San Francisco, California 94104

Biotechnology Value Fund II, L.P.
44 Montgomery St., 40th Floor
San Francisco, California 94104

BVF II GP LLC
44 Montgomery St., 40th Floor
San Francisco, California 94104

Biotechnology Value Trading Fund OS LP
PO Box 309 Ugland House
Grand Cayman, KY1-1104
Cayman Islands

BVF Partners OS Ltd.
PO Box 309 Ugland House
Grand Cayman, KY1-1104
Cayman Islands

BVF GP Holdings LLC
44 Montgomery St., 40th Floor
San Francisco, California 94104

BVF Partners L.P.
44 Montgomery St., 40th Floor
San Francisco, California 94104

BVF Inc.
44 Montgomery St., 40th Floor
San Francisco, California 94104

Mark N. Lampert
44 Montgomery St., 40th Floor
San Francisco, California 94104</principalBusinessOfficeOrResidenceAddress>
        <citizenship>Biotechnology Value Fund, L.P.
Delaware

BVF I GP LLC
Delaware

Biotechnology Value Fund II, L.P.
Delaware

BVF II GP LLC
Delaware

Biotechnology Value Trading Fund OS LP
Cayman Islands

BVF Partners OS Ltd.
Cayman Islands

BVF GP Holdings LLC
Delaware

BVF Partners L.P.
Delaware

BVF Inc.
Delaware

Mark N. Lampert
United States</citizenship>
      </item2>
      <item3>
        <notApplicableFlag>Y</notApplicableFlag>
      </item3>
      <item4>
        <amountBeneficiallyOwned>As of the close of business on October 29, 2025, (i) BVF beneficially owned 4,673,550 shares of the Issuer's Common Stock, $0.0001 par value per share (the "Shares"), (ii) BVF2 beneficially owned 3,396,894 Shares and (iii) Trading Fund OS beneficially owned 542,486 Shares.

BVF GP, as the general partner of BVF, may be deemed to beneficially own the 4,673,550 Shares beneficially owned by BVF.

BVF2 GP, as the general partner of BVF2, may be deemed to beneficially own the 3,396,894 Shares beneficially owned by BVF2.

Partners OS, as the general partner of Trading Fund OS, may be deemed to beneficially own the 542,486 Shares beneficially owned by Trading Fund OS.

BVF GPH, as the sole member of each of BVF GP and BVF2 GP, may be deemed to beneficially own the 8,070,444 Shares beneficially owned in the aggregate by BVF and BVF2.

Partners, as the investment manager of BVF, BVF2 and Trading Fund OS, and the sole member of Partners OS, may be deemed to beneficially own the 8,750,000 Shares beneficially owned in the aggregate by BVF, BVF2 and Trading Fund OS and held in a certain Partners managed account (the "Partners Managed Account"), including 137,070 Shares held in the Partners Managed Account.

BVF Inc., as the general partner of Partners, may be deemed to beneficially own the 8,750,000 Shares beneficially owned by Partners.

Mr. Lampert, as a director and officer of BVF Inc., may be deemed to beneficially own the 8,750,000 Shares beneficially owned by BVF Inc.

The foregoing should not be construed in and of itself as an admission by any Reporting Person as to beneficial ownership of any Shares owned by another Reporting Person. BVF GP disclaims beneficial ownership of the Shares beneficially owned by BVF. BVF2 GP disclaims beneficial ownership of the Shares beneficially owned by BVF2. Partners OS disclaims beneficial ownership of the Shares beneficially owned by Trading Fund OS. BVF GPH disclaims beneficial ownership of the Shares beneficially owned by BVF and BVF2. Each of Partners, BVF Inc. and Mr. Lampert disclaims beneficial ownership of the Shares beneficially owned by BVF, BVF2 and Trading Fund OS and held in the Partners Managed Account, and the filing of this statement shall not be construed as an admission that any such person or entity is the beneficial owner of any such securities.</amountBeneficiallyOwned>
        <classPercent>The following percentages are based on 171,572,498 Shares outstanding as of the close of the Issuer's underwritten public offering as reported in the Issuer's Prospectus Supplement filed with the Securities and Exchange Commission on August 13, 2025.

As of the close of business on October 29, 2025, (i) BVF beneficially owned approximately 2.7% of the outstanding Shares, (ii) BVF2 beneficially owned approximately 2.0% of the outstanding Shares, (iii) Trading Fund OS beneficially owned less than 1% of the outstanding Shares, (iv) BVF GP may be deemed to beneficially own approximately 2.7% of the outstanding Shares, (v) BVF2 GP may be deemed to beneficially own approximately 2.0% of the outstanding Shares, (vi) Partners OS may be deemed to beneficially own less than 1% of the outstanding Shares, (vii) BVF GPH may be deemed to beneficially own approximately 4.7% of the outstanding Shares, and (viii) each of Partners, BVF Inc. and Mr. Lampert may be deemed to beneficially own approximately 5.1% of the outstanding Shares (less than 1% of the outstanding Shares are held in the Partners Managed Account).</classPercent>
        <numberOfSharesPersonHas>
          <solePowerOrDirectToVote>See Cover Pages Items 5-9.</solePowerOrDirectToVote>
          <sharedPowerOrDirectToVote>See Cover Pages Items 5-9.</sharedPowerOrDirectToVote>
          <solePowerOrDirectToDispose>See Cover Pages Items 5-9.</solePowerOrDirectToDispose>
          <sharedPowerOrDirectToDispose>See Cover Pages Items 5-9.</sharedPowerOrDirectToDispose>
        </numberOfSharesPersonHas>
      </item4>
      <item5>
        <notApplicableFlag>Y</notApplicableFlag>
      </item5>
      <item6>
        <notApplicableFlag>N</notApplicableFlag>
        <ownershipMoreThan5PercentOnBehalfOfAnotherPerson>Partners, BVF Inc. and Mr. Lampert share voting and dispositive power over the Shares beneficially owned by BVF, BVF2 and Trading Fund OS and held in the Partners Managed Account.</ownershipMoreThan5PercentOnBehalfOfAnotherPerson>
      </item6>
      <item7>
        <notApplicableFlag>Y</notApplicableFlag>
      </item7>
      <item8>
        <notApplicableFlag>N</notApplicableFlag>
        <identificationAndClassificationOfGroupMembers>See Exhibit 99.1.</identificationAndClassificationOfGroupMembers>
      </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 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>
    <exhibitInfo>99.1 - Joint Filing Agreement, October 29, 2025.</exhibitInfo>
    <signatureInformation>
      <reportingPersonName>BIOTECHNOLOGY VALUE FUND L P</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Mark N. Lampert</signature>
        <title>Mark N. Lampert, Authorized Signatory</title>
        <date>10/29/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>BVF I GP LLC</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Mark N. Lampert</signature>
        <title>Mark N. Lampert, Authorized Signatory</title>
        <date>10/29/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>BIOTECHNOLOGY VALUE FUND II LP</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Mark N. Lampert</signature>
        <title>Mark N. Lampert, Authorized Signatory</title>
        <date>10/29/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>BVF II GP LLC</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Mark N. Lampert</signature>
        <title>Mark N. Lampert, Authorized Signatory</title>
        <date>10/29/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>Biotechnology Value Trading Fund OS LP</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Mark N. Lampert</signature>
        <title>Mark N. Lampert, Authorized Signatory</title>
        <date>10/29/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>BVF Partners OS Ltd.</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Mark N. Lampert</signature>
        <title>Mark N. Lampert, Authorized Signatory</title>
        <date>10/29/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>BVF GP HOLDINGS LLC</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Mark N. Lampert</signature>
        <title>Mark N. Lampert, Authorized Signatory</title>
        <date>10/29/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>BVF PARTNERS L P/IL</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Mark N. Lampert</signature>
        <title>Mark N. Lampert, Authorized Signatory</title>
        <date>10/29/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>BVF INC/IL</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Mark N. Lampert</signature>
        <title>Mark N. Lampert, Authorized Signatory</title>
        <date>10/29/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>LAMPERT MARK N</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Mark N. Lampert</signature>
        <title>Mark N. Lampert</title>
        <date>10/29/2025</date>
      </signatureDetails>
    </signatureInformation>
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<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>ex991to13g07422cmpx_102925.htm
<DESCRIPTION>JOINT FILING AGREEMENT
<TEXT>
<HTML>
<HEAD>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: right">Exhibit 99.1</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: center"><U>Joint Filing Agreement</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: justify">The undersigned hereby agree that the Statement
on Schedule 13G dated October 29, 2025 with respect to the Common Stock, $0.0001 par value per share, of Compass Therapeutics, Inc., a
Delaware corporation, and any further amendments thereto executed by each and any of the undersigned shall be filed on behalf of each
of the undersigned pursuant to and in accordance with the provisions of Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as
amended.</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font-size: 10pt; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="font: 10pt Times New Roman, Times, Serif; padding-right: 1.45pt; padding-left: 1.45pt">BIOTECHNOLOGY VALUE FUND L P</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="font: 10pt Times New Roman, Times, Serif; padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 5%; padding-right: 1.45pt; padding-left: 1.45pt; font: 10pt Times New Roman, Times, Serif">By:</TD>
    <TD STYLE="width: 45%; padding-right: 1.45pt; padding-left: 1.45pt">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; border-bottom: Black 0.5pt solid">/s/ Mark N. Lampert</P></TD>
    <TD STYLE="width: 50%; padding-right: 1.45pt; padding-left: 1.45pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="font: 10pt Times New Roman, Times, Serif; padding-right: 1.45pt; padding-left: 1.45pt">Mark N. Lampert, Authorized Signatory</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; padding-right: 1.45pt; padding-left: 1.45pt">Date:</TD>
    <TD COLSPAN="2" STYLE="font: 10pt Times New Roman, Times, Serif; padding-right: 1.45pt; padding-left: 1.45pt">10/29/2025</TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 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="3" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">BVF I GP LLC</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 5%; padding-right: 1.45pt; padding-left: 1.45pt">By:</TD>
    <TD STYLE="width: 45%; padding-right: 1.45pt; padding-left: 1.45pt">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; border-bottom: Black 0.5pt solid">/s/ Mark N. Lampert</P></TD>
    <TD STYLE="width: 50%; padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">Mark N. Lampert, Authorized Signatory</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 1.45pt; padding-left: 1.45pt">Date:</TD>
    <TD COLSPAN="2" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">10/29/2025</TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 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="3" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">BIOTECHNOLOGY VALUE FUND II LP</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 5%; padding-right: 1.45pt; padding-left: 1.45pt">By:</TD>
    <TD STYLE="width: 45%; padding-right: 1.45pt; padding-left: 1.45pt">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; border-bottom: Black 0.5pt solid">/s/ Mark N. Lampert</P></TD>
    <TD STYLE="width: 50%; padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">Mark N. Lampert, Authorized Signatory</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 1.45pt; padding-left: 1.45pt">Date:</TD>
    <TD COLSPAN="2" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">10/29/2025</TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 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="3" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">BVF II GP LLC</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 5%; padding-right: 1.45pt; padding-left: 1.45pt">By:</TD>
    <TD STYLE="width: 45%; padding-right: 1.45pt; padding-left: 1.45pt">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; border-bottom: Black 0.5pt solid">/s/ Mark N. Lampert</P></TD>
    <TD STYLE="width: 50%; padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">Mark N. Lampert, Authorized Signatory</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 1.45pt; padding-left: 1.45pt">Date:</TD>
    <TD COLSPAN="2" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">10/29/2025</TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 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="3" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">Biotechnology Value Trading Fund OS LP</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 5%; padding-right: 1.45pt; padding-left: 1.45pt">By:</TD>
    <TD STYLE="width: 45%; padding-right: 1.45pt; padding-left: 1.45pt">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; border-bottom: Black 0.5pt solid">/s/ Mark N. Lampert</P></TD>
    <TD STYLE="width: 50%; padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">Mark N. Lampert, Authorized Signatory</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 1.45pt; padding-left: 1.45pt">Date:</TD>
    <TD COLSPAN="2" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">10/29/2025</TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 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="3" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">BVF Partners OS Ltd.</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 5%; padding-right: 1.45pt; padding-left: 1.45pt">By:</TD>
    <TD STYLE="width: 45%; padding-right: 1.45pt; padding-left: 1.45pt">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; border-bottom: Black 0.5pt solid">/s/ Mark N. Lampert</P></TD>
    <TD STYLE="width: 50%; padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">Mark N. Lampert, Authorized Signatory</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 1.45pt; padding-left: 1.45pt">Date:</TD>
    <TD COLSPAN="2" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">10/29/2025</TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 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="3" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">BVF GP HOLDINGS LLC</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 5%; padding-right: 1.45pt; padding-left: 1.45pt">By:</TD>
    <TD STYLE="width: 45%; padding-right: 1.45pt; padding-left: 1.45pt">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; border-bottom: Black 0.5pt solid">/s/ Mark N. Lampert</P></TD>
    <TD STYLE="width: 50%; padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">Mark N. Lampert, Authorized Signatory</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 1.45pt; padding-left: 1.45pt">Date:</TD>
    <TD COLSPAN="2" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">10/29/2025</TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

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<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="3" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">BVF PARTNERS L P/IL</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 5%; padding-right: 1.45pt; padding-left: 1.45pt">By:</TD>
    <TD STYLE="width: 45%; padding-right: 1.45pt; padding-left: 1.45pt">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; border-bottom: Black 0.5pt solid">/s/ Mark N. Lampert</P></TD>
    <TD STYLE="width: 50%; padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">Mark N. Lampert, Authorized Signatory</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 1.45pt; padding-left: 1.45pt">Date:</TD>
    <TD COLSPAN="2" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">10/29/2025</TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 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="3" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">BVF INC/IL</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 5%; padding-right: 1.45pt; padding-left: 1.45pt">By:</TD>
    <TD STYLE="width: 45%; padding-right: 1.45pt; padding-left: 1.45pt">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; border-bottom: Black 0.5pt solid">/s/ Mark N. Lampert</P></TD>
    <TD STYLE="width: 50%; padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">Mark N. Lampert, Authorized Signatory</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 1.45pt; padding-left: 1.45pt">Date:</TD>
    <TD COLSPAN="2" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">10/29/2025</TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 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="3" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">LAMPERT MARK N</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 5%; padding-right: 1.45pt; padding-left: 1.45pt">By:</TD>
    <TD STYLE="width: 45%; padding-right: 1.45pt; padding-left: 1.45pt">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; border-bottom: Black 0.5pt solid">/s/ Mark N. Lampert</P></TD>
    <TD STYLE="width: 50%; padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 1.45pt; padding-left: 1.45pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">Mark N. Lampert</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 1.45pt; padding-left: 1.45pt">Date:</TD>
    <TD COLSPAN="2" STYLE="padding-right: 1.45pt; padding-left: 1.45pt">10/29/2025</TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

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