Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Checkbox not checked   Rule 13d-1(b)
Checkbox not checked   Rule 13d-1(c)
Checkbox checked   Rule 13d-1(d)




schemaVersion:


SCHEDULE 13G




Comment for Type of Reporting Person:  Row 5 - 5,944,009 shares, except that Westlake BioPartners GP I, LLC ("Westlake GP I"), the general partner of Westlake BioPartners Fund I, L.P. ("Westlake Fund I"), may be deemed to have sole voting power, and Dr. Beth C. Seidenberg ("Seidenberg"), the sole managing director of Westlake GP I, may be deemed to have sole power to vote these shares. Row 7 - 5,944,009 shares, except that Westlake GP I, the general partner of Westlake Fund I, may be deemed to have sole dispositive power, and Seidenberg, the sole managing director of Westlake GP I, may be deemed to have sole power to dispose of these shares.


SCHEDULE 13G




Comment for Type of Reporting Person:  Row 5 - 5,944,009 shares, all of which are owned directly by Westlake Fund I. Westlake GP I, the general partner of Westlake Fund I, may be deemed to have sole voting power, and Seidenberg, the sole managing director of Westlake GP I, may be deemed to have sole power to vote these shares. Row 7 - 5,944,009 shares, all of which are owned directly by Westlake Fund I. Westlake GP I, the general partner of Westlake Fund I, may be deemed to have sole dispositive power, and Seidenberg, the sole managing director of Westlake GP I, may be deemed to have sole power to dispose of these shares.


SCHEDULE 13G




Comment for Type of Reporting Person:  Row 5 - 5,160,847 shares, except that Westlake BioPartners GP II, LLC ("Westlake GP II"), the general partner of Westlake BioPartners Fund II, L.P. ("Westlake Fund II"), may be deemed to have sole voting power, and Seidenberg, the sole managing director of Westlake GP II, may be deemed to have sole power to vote these shares. Row 7 - 5,160,847 shares, except that Westlake GP II, the general partner of Westlake Fund II, may be deemed to have sole dispositive power, and Seidenberg, the sole managing director of Westlake GP II, may be deemed to have sole power to dispose of these shares.


SCHEDULE 13G




Comment for Type of Reporting Person:  Row 5 - 5,160,847 shares, all of which are owned directly by Westlake Fund II. Westlake GP II, the general partner of Westlake Fund II, may be deemed to have sole voting power, and Seidenberg, the sole managing director of Westlake GP II, may be deemed to have shared power to vote these shares. Row 7 - 5,160,847 shares, all of which are owned directly by Westlake Fund II. Westlake GP II, the general partner of Westlake Fund II, may be deemed to have sole dispositive power, and Seidenberg, the sole managing director of Westlake GP II, may be deemed to have shared power to dispose of these shares.


SCHEDULE 13G




Comment for Type of Reporting Person:  Row 5 - 2,094,813 shares, except that Westlake BioPartners Opportunity GP I, LLC ("Westlake Opportunity GP I"), the general partner of Westlake BioPartners Opportunity Fund I, L.P. ("Westlake Opportunity Fund I"), may be deemed to have sole voting power, and Seidenberg, the sole managing director of Westlake Opportunity GP I, may be deemed to have sole power to vote these shares. Row 7 - 2,094,813 shares, except that Westlake Opportunity GP I, the general partner of Westlake Opportunity Fund I, may be deemed to have sole dispositive power, and Seidenberg, the sole managing director of Westlake Opportunity GP I, may be deemed to have sole power to dispose of these shares.


SCHEDULE 13G




Comment for Type of Reporting Person:  Row 5 - 2,094,813 shares, all of which are owned directly by Westlake Opportunity Fund I. Westlake Opportunity GP I, the general partner of Westlake Opportunity Fund I, may be deemed to have sole voting power, and Seidenberg, the sole managing director of Westlake Opportunity GP I, may be deemed to have sole power to vote these shares. Row 7 - 2,094,813 shares, all of which are owned directly by Westlake Opportunity Fund I. Westlake Opportunity GP I, the general partner of Westlake Opportunity Fund I, may be deemed to have sole dispositive power, and Seidenberg, the sole managing director of Westlake Opportunity GP I, may be deemed to have sole power to dispose of these shares.


SCHEDULE 13G




Comment for Type of Reporting Person:  Row 5 - 13,199,669 shares, of which 5,944,009 shares are held directly by Westlake Fund I, 5,160,847 shares are held directly by Westlake Fund II and 2,094,813 shares are held directly by Westlake Opportunity Fund I. Westlake GP I is the general partner of Westlake Fund I, Westlake GP II is the general partner of Westlake Fund II and Westlake Opportunity GP I is the general partner of Westlake Opportunity Fund I. Seidenberg, as the sole managing director of each of Westlake GP I, Westlake GP II and Westlake Opportunity GP I, may be deemed to have sole voting power over the shares held directly by each of Westlake Fund I, Westlake Fund II and Westlake Opportunity Fund I. Row 7 - 13,199,669 shares, of which 5,944,009 shares are held directly by Westlake Fund I, 5,160,847 shares are held directly by Westlake Fund II and 2,094,813 shares are held directly by Westlake Opportunity Fund I. Westlake GP I is the general partner of Westlake Fund I, Westlake GP II is the general partner of Westlake Fund II and Westlake Opportunity GP I is the general partner of Westlake Opportunity Fund I. Seidenberg, as the sole managing director of each of Westlake GP I, Westlake GP II and Westlake Opportunity GP I, may be deemed to have sole dispositive power over the shares held directly by each of Westlake Fund I, Westlake Fund II and Westlake Opportunity Fund I.


SCHEDULE 13G



 
Westlake BioPartners Fund I, L.P.
 
Signature:Westlake BioPartners GP I, LLC
Name/Title:General Partner
Date:10/27/2026
 
Signature:/s/ Jennifer L. Kercher
Name/Title:Jennifer L. Kercher/Attorney-in-Fact*
Date:10/27/2026
 
Westlake BioPartners GP I, LLC
 
Signature:/s/ Jennifer L. Kercher
Name/Title:Jennifer L. Kercher/Attorney-in-Fact*
Date:10/27/2026
 
Westlake BioPartners Fund II, L.P.
 
Signature:Westlake BioPartners GP II, LLC
Name/Title:General Partner
Date:10/27/2026
 
Signature:/s/ Jennifer L. Kercher
Name/Title:Jennifer L. Kercher/Attorney-in-Fact*
Date:10/27/2026
 
Westlake BioPartners GP II, LLC
 
Signature:/s/ Jennifer L. Kercher
Name/Title:Jennifer L. Kercher/Attorney-in-Fact*
Date:10/27/2026
 
Westlake BioPartners Opportunity Fund I, L.P.
 
Signature:Westlake BioPartners Opportunity GP I, LLC
Name/Title:General Partner
Date:10/27/2026
 
Signature:/s/ Jennifer L. Kercher
Name/Title:Jennifer L. Kercher/Attorney-in-Fact*
Date:10/27/2026
 
Westlake BioPartners Opportunity GP I, LLC
 
Signature:/s/ Jennifer L. Kercher
Name/Title:Jennifer L. Kercher/Attorney-in-Fact*
Date:10/27/2026
 
Dr. Beth C. Seidenberg
 
Signature:/s/ Jennifer L. Kercher
Name/Title:Jennifer L. Kercher/Attorney-in-Fact*
Date:10/27/2026
Exhibit Information

EXHIBIT INDEX Exhibit Description 1 Joint Filing Agreement 2 Power of Attorney - Westlake BioPartners Fund I, L.P. and Westlake BioPartners GP I, LLC 3 Power of Attorney - Westlake BioPartners Opportunity Fund I, L.P. and Westlake BioPartners Opportunity GP I, LLC 4 Power of Attorney - Westlake BioPartners Fund II, L.P. and Westlake BioPartners GP II, LLC

 

Exhibit 1

 

JOINT FILING AGREEMENT

 

The undersigned hereby agree that the foregoing statement on Schedule 13G is filed on behalf of each of the undersigned, and any amendments thereto executed by the undersigned shall be filed on behalf of each of the undersigned without the necessity of filing any additional joint filing agreement. The undersigned acknowledge that each is responsible for the timely filing of such statement on Schedule 13G and any amendments thereto, and for the completeness and accuracy of the information concerning him, her or it contained therein, but shall not be responsible for the completeness or accuracy of the information concerning the others of the undersigned, except to the extent that he, she or it knows or has reason to believe that such information is inaccurate or incomplete. This Joint Filing Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument.

 

Dated: October 27, 2026

 

Westlake BioPartners Fund I, L.P.   Westlake BioPartners Opportunity Fund I, L.P.
       
By: Westlake BioPartners GP I, LLC   By: Westlake BioPartners Opportunity GP I, LLC
Its: General Partner   Its: General Partner
         
By: /s/ Jennifer L. Kercher   By: /s/ Jennifer L. Kercher
  Jennifer L. Kercher     Jennifer L. Kercher
  Attorney-in-Fact*     Attorney-in-Fact*
       
     
Westlake BioPartners GP I, LLC   Westlake BioPartners Opportunity GP I, LLC
       
By: /s/ Jennifer L. Kercher   By: /s/ Jennifer L. Kercher
  Jennifer L. Kercher     Jennifer L. Kercher
  Attorney-in-Fact*     Attorney-in-Fact*
         
Westlake BioPartners Fund II, L.P.   Dr. Beth C. Seidenberg
     
By: Westlake BioPartners GP II, LLC   By: /s/ Jennifer L. Kercher
Its: General Partner     Jennifer L. Kercher
        Attorney-in-Fact*
       
By: /s/ Jennifer L. Kercher  

*This Joint Filing Agreement was executed pursuant to a Power of Attorney. Note that copies of the applicable Powers of Attorney are included herein as exhibits to this Schedule 13G.

  Jennifer L. Kercher  
  Attorney-in-Fact*  
     
Westlake BioPartners GP II, LLC    
       
By: /s/ Jennifer L. Kercher    
  Jennifer L. Kercher    
  Attorney-in-Fact*    

 

 

 

Exhibit 2

 

Power of Attorney

 

Each of the undersigned entities and individuals (collectively, the “Reporting Persons”) hereby authorizes and designates Westlake BioPartners GP I, LLC or such other person or entity as is designated in writing by Beth C. Seidenberg (the “Designated Filer”) as the beneficial owner to prepare and file on behalf of such Reporting Person individually, or jointly together with the other Reporting Persons, any and all reports, notices, communications and other documents (including, but not limited to, reports on Form D, Form ADV, Schedule 13D, Schedule 13F, Schedule 13G, Schedule 13H, Form 3, Form 4 and Form 5) that such Reporting Person may be required to file with the United States Securities and Exchange Commission pursuant to the Securities Act of 1933, as amended (together with the implementing regulations thereto, the “Act”) and the Securities Exchange Act of 1934, as amended (together with the implementing regulations thereto, the “Exchange Act”) or any other domestic or international state, federal or national agency (collectively, the “Reports”) with respect to each Reporting Person’s ownership of, or transactions in, securities of any entity whose securities are beneficially owned (directly or indirectly) by such Reporting Person (collectively, the “Companies”).

 

Each Reporting Person hereby further (i) authorizes and designates Jennifer L. Kercher (the “Authorized Signatory”) to execute and file on behalf of such Reporting Person the Reports and to perform any and all other acts, which in the opinion of the Designated Filer or Authorized Signatory may be necessary or incidental to the performance of the foregoing powers herein granted and (ii) approves and ratifies all prior Reports executed and/or filed on behalf of each such Reporting Person by the Authorized Signatory.

 

The authority of the Designated Filer and the Authorized Signatory under this Power of Attorney with respect to each Reporting Person shall continue until such Reporting Person is no longer required to file any Reports with respect to the Reporting Person’s ownership of, or transactions in, the securities of the Companies, unless earlier revoked in writing. Each Reporting Person acknowledges that the Designated Filer and the Authorized Signatory are not assuming any of the Reporting Person’s responsibilities to comply with the Act or the Exchange Act.

 

Date: February 6, 2024

 

WESTLAKE BIOPARTNERS FUND I, L.P.   WESTLAKE BIOPARTNERS GP I, LLC
a Delaware Limited Partnership   a Delaware Limited Liability Company
     
By: Westlake BioPartners GP I, LLC   By: /s/ Sean E. Harper
  a Delaware Limited Liability Company     Sean E. Harper
  Its General Partner     Managing Director
     
By: /s/ Sean E. Harper   By: /s/ Beth C. Seidenberg
  Sean E. Harper     Beth C. Seidenberg
  Managing Director     Managing Director
     
By: /s/ Beth C. Seidenberg  
  Beth C. Seidenberg    
  Managing Director  
     
BETH C. SEIDENBERG   SEAN E. HARPER
     
By: /s/ Beth C. Seidenberg   By: /s/ Sean E. Harper
  Beth C. Seidenberg     Sean E. Harper

 

 

 

Exhibit 3

 

Power of Attorney

 

Each of the undersigned entities and individuals (collectively, the “Reporting Persons”) hereby authorizes and designates Westlake BioPartners Opportunity GP I, LLC or such other person or entity as is designated in writing by Beth C. Seidenberg (the “Designated Filer”) as the beneficial owner to prepare and file on behalf of such Reporting Person individually, or jointly together with the other Reporting Persons, any and all reports, notices, communications and other documents (including, but not limited to, reports on Form D, Form ADV, Schedule 13D, Schedule 13F, Schedule 13G, Schedule 13H, Form 3, Form 4 and Form 5) that such Reporting Person may be required to file with the United States Securities and Exchange Commission pursuant to the Securities Act of 1933, as amended (together with the implementing regulations thereto, the “Act”) and the Securities Exchange Act of 1934, as amended (together with the implementing regulations thereto, the “Exchange Act”) or any other domestic or international state, federal or national agency (collectively, the “Reports”) with respect to each Reporting Person’s ownership of, or transactions in, securities of any entity whose securities are beneficially owned (directly or indirectly) by such Reporting Person (collectively, the “Companies”).

 

Each Reporting Person hereby further (i) authorizes and designates Jennifer L. Kercher (the “Authorized Signatory”) to execute and file on behalf of such Reporting Person the Reports and to perform any and all other acts, which in the opinion of the Designated Filer or Authorized Signatory may be necessary or incidental to the performance of the foregoing powers herein granted and (ii) approves and ratifies all prior Reports executed and/or filed on behalf of each such Reporting Person by the Authorized Signatory.

 

The authority of the Designated Filer and the Authorized Signatory under this Power of Attorney with respect to each Reporting Person shall continue until such Reporting Person is no longer required to file any Reports with respect to the Reporting Person’s ownership of, or transactions in, the securities of the Companies, unless earlier revoked in writing. Each Reporting Person acknowledges that the Designated Filer and the Authorized Signatory are not assuming any of the Reporting Person’s responsibilities to comply with the Act or the Exchange Act.

 

Date: February 6, 2024

 

WESTLAKE BIOPARTNERS OPPORTUNITY FUND I, L.P.   WESTLAKE BIOPARTNERS OPPORTUNITY GP I, LLC
a Delaware Limited Partnership   a Delaware Limited Liability Company
     
By: Westlake BioPartners GP I, LLC   By: /s/ Sean E. Harper
  a Delaware Limited Liability Company     Sean E. Harper
  Its General Partner     Managing Direct
     
By: /s/ Sean E. Harper   By: /s/ Beth C. Seidenberg
  Sean E. Harper     Beth C. Seidenberg
  Managing Director     Managing Director
     
    SEAN E. HARPER
     
By: /s/ Beth C. Seidenberg   By: /s/ Sean E. Harper
  Beth C. Seidenberg     Sean E. Harper
  Managing Director  
     
BETH C. SEIDENBERG    
     
By: /s/ Beth C. Seidenberg    
  Beth C. Seidenberg    

 

 

 

 

Exhibit 4

 

Power of Attorney

 

Each of the undersigned entities and individuals (collectively, the “Reporting Persons”) hereby authorizes and designates Westlake BioPartners GP II, LLC or such other person or entity as is designated in writing by Beth C. Seidenberg (the “Designated Filer”) as the beneficial owner to prepare and file on behalf of such Reporting Person individually, or jointly together with the other Reporting Persons, any and all reports, notices, communications and other documents (including, but not limited to, reports on Form D, Form ADV, Schedule 13D, Schedule 13F, Schedule 13G, Schedule 13H, Form 3, Form 4 and Form 5) that such Reporting Person may be required to file with the United States Securities and Exchange Commission pursuant to the Securities Act of 1933, as amended (together with the implementing regulations thereto, the “Act”) and the Securities Exchange Act of 1934, as amended (together with the implementing regulations thereto, the “Exchange Act”) or any other domestic or international state, federal or national agency (collectively, the “Reports”) with respect to each Reporting Person’s ownership of, or transactions in, securities of any entity whose securities are beneficially owned (directly or indirectly) by such Reporting Person (collectively, the “Companies”).

 

Each Reporting Person hereby further (i) authorizes and designates Jennifer L. Kercher (the “Authorized Signatory”) to execute and file on behalf of such Reporting Person the Reports and to perform any and all other acts, which in the opinion of the Designated Filer or Authorized Signatory may be necessary or incidental to the performance of the foregoing powers herein granted and (ii) approves and ratifies all prior Reports executed and/or filed on behalf of each such Reporting Person by the Authorized Signatory.

 

The authority of the Designated Filer and the Authorized Signatory under this Power of Attorney with respect to each Reporting Person shall continue until such Reporting Person is no longer required to file any Reports with respect to the Reporting Person’s ownership of, or transactions in, the securities of the Companies, unless earlier revoked in writing. Each Reporting Person acknowledges that the Designated Filer and the Authorized Signatory are not assuming any of the Reporting Person’s responsibilities to comply with the Act or the Exchange Act.

 

Date: May 4, 2023

 

 

WESTLAKE BIOPARTNERS FUND II, L.P.
a Delaware Limited Partnership
  WESTLAKE BIOPARTNERS GP II, LLC
a Delaware Limited Liability Company
     
By: Westlake BioPartners GP II, LLC   By: /s/ Sean E. Harper
  a Delaware Limited Liability Company
Its General Partner
    Sean E. Harper
Managing Direct
     
By: /s/ Sean E. Harper   By: /s/ Beth C. Seidenberg
  Sean E. Harper
Managing Director
    Beth C. Seidenberg
Managing Director
     
By: /s/ Beth C. Seidenberg    
  Beth C. Seidenberg    
  Managing Director    
     
BETH C. SEIDENBERG   SEAN E. HARPER
     
By: /s/ Beth C. Seidenberg   By: /s/ Sean E. Harper
  Beth C. Seidenberg     Sean E. Harper