If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. Checkbox not checked

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).






SCHEDULE 13D




Comment for Type of Reporting Person:
The Percent of Class is calculated based on (i) 33,593,866 shares of the Issuer's Common Stock outstanding as of August 4, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the SEC on August 7, 2025 and (ii) 11,108,055 shares of the Issuer's Common Stock that were sold on September 26, 2025, as reported in the Issuer's Prospectus dated September 24, 2025, filed with the SEC on September 25, 2025.


SCHEDULE 13D




Comment for Type of Reporting Person:
The Percent of Class is calculated based on (i) 33,593,866 shares of the Issuer's Common Stock outstanding as of August 4, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the SEC on August 7, 2025 and (ii) 11,108,055 shares of the Issuer's Common Stock that were sold on September 26, 2025, as reported in the Issuer's Prospectus dated September 24, 2025, filed with the SEC on September 25, 2025.


SCHEDULE 13D




Comment for Type of Reporting Person:
The Percent of Class is calculated based on (i) 33,593,866 shares of the Issuer's Common Stock outstanding as of August 4, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the SEC on August 7, 2025 and (ii) 11,108,055 shares of the Issuer's Common Stock that were sold on September 26, 2025, as reported in the Issuer's Prospectus dated September 24, 2025, filed with the SEC on September 25, 2025.


SCHEDULE 13D




Comment for Type of Reporting Person:
The Percent of Class is calculated based on (i) 33,593,866 shares of the Issuer's Common Stock outstanding as of August 4, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the SEC on August 7, 2025 and (ii) 11,108,055 shares of the Issuer's Common Stock that were sold on September 26, 2025, as reported in the Issuer's Prospectus dated September 24, 2025, filed with the SEC on September 25, 2025.


SCHEDULE 13D




Comment for Type of Reporting Person:
The Percent of Class is calculated based on (i) 33,593,866 shares of the Issuer's Common Stock outstanding as of August 4, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the SEC on August 7, 2025 and (ii) 11,108,055 shares of the Issuer's Common Stock that were sold on September 26, 2025, as reported in the Issuer's Prospectus dated September 24, 2025, filed with the SEC on September 25, 2025.


SCHEDULE 13D




Comment for Type of Reporting Person:
The Percent of Class is calculated based on (i) 33,593,866 shares of the Issuer's Common Stock outstanding as of August 4, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the SEC on August 7, 2025 and (ii) 11,108,055 shares of the Issuer's Common Stock that were sold on September 26, 2025, as reported in the Issuer's Prospectus dated September 24, 2025, filed with the SEC on September 25, 2025.


SCHEDULE 13D




Comment for Type of Reporting Person:
The Percent of Class is calculated based on (i) 33,593,866 shares of the Issuer's Common Stock outstanding as of August 4, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the SEC on August 7, 2025 and (ii) 11,108,055 shares of the Issuer's Common Stock that were sold on September 26, 2025, as reported in the Issuer's Prospectus dated September 24, 2025, filed with the SEC on September 25, 2025.


SCHEDULE 13D




Comment for Type of Reporting Person:
The Percent of Class is calculated based on (i) 33,593,866 shares of the Issuer's Common Stock outstanding as of August 4, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the SEC on August 7, 2025 and (ii) 11,108,055 shares of the Issuer's Common Stock that were sold on September 26, 2025, as reported in the Issuer's Prospectus dated September 24, 2025, filed with the SEC on September 25, 2025.


SCHEDULE 13D




Comment for Type of Reporting Person:
The Percent of Class is calculated based on (i) 33,593,866 shares of the Issuer's Common Stock outstanding as of August 4, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the SEC on August 7, 2025 and (ii) 11,108,055 shares of the Issuer's Common Stock that were sold on September 26, 2025, as reported in the Issuer's Prospectus dated September 24, 2025, filed with the SEC on September 25, 2025.


SCHEDULE 13D




Comment for Type of Reporting Person:
The Percent of Class is calculated based on (i) 33,593,866 shares of the Issuer's Common Stock outstanding as of August 4, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the SEC on August 7, 2025 and (ii) 11,108,055 shares of the Issuer's Common Stock that were sold on September 26, 2025, as reported in the Issuer's Prospectus dated September 24, 2025, filed with the SEC on September 25, 2025.


SCHEDULE 13D




Comment for Type of Reporting Person:
The Percent of Class is calculated based on (i) 33,593,866 shares of the Issuer's Common Stock outstanding as of August 4, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the SEC on August 7, 2025 and (ii) 11,108,055 shares of the Issuer's Common Stock that were sold on September 26, 2025, as reported in the Issuer's Prospectus dated September 24, 2025, filed with the SEC on September 25, 2025.


SCHEDULE 13D




Comment for Type of Reporting Person:
The Percent of Class is calculated based on (i) 33,593,866 shares of the Issuer's Common Stock outstanding as of August 4, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the SEC on August 7, 2025 and (ii) 11,108,055 shares of the Issuer's Common Stock that were sold on September 26, 2025, as reported in the Issuer's Prospectus dated September 24, 2025, filed with the SEC on September 25, 2025.


SCHEDULE 13D




Comment for Type of Reporting Person:
The Aggregate Amount represents 5,219,440 shares of Common Stock held directly by Frazier Life Sciences X, L.P. The Percent of Class is calculated based on (i) 33,593,866 shares of the Issuer's Common Stock outstanding as of August 4, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the SEC on August 7, 2025 and (ii) 11,108,055 shares of the Issuer's Common Stock that were sold on September 26, 2025, as reported in the Issuer's Prospectus dated September 24, 2025, filed with the SEC on September 25, 2025.


SCHEDULE 13D




Comment for Type of Reporting Person:
The Aggregate Amount represents (i) 4,655 shares of Common Stock that are issuable upon the exercise of options held directly by Patrick J. Heron, and (ii) 5,219,440 shares of Common Stock held directly by Frazier Life Sciences X, L.P. The Percent of Class is calculated based on (i) 33,593,866 shares of the Issuer's Common Stock outstanding as of August 4, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the SEC on August 7, 2025, (ii) 11,108,055 shares of the Issuer's Common Stock that were sold on September 26, 2025, as reported in the Issuer's Prospectus dated September 24, 2025, filed with the SEC on September 25, 2025.and (iii) 4,655 shares of Common Stock that are issuable upon the exercise of options held directly by Patrick J. Heron


SCHEDULE 13D


 
Frazier Life Sciences Public Fund, L.P.
 
Signature:/s/ Steve R. Bailey
Name/Title:By Steve R. Bailey, CFO of FHMLSP, L.L.C., GP of FHMLSP, L.P., GP of Frazier Life Sciences Public Fund, L.P.
Date:09/30/2025
 
FHMLSP, L.P.
 
Signature:/s/ Steve R. Bailey
Name/Title:By Steve R. Bailey, CFO of FHMLSP, L.L.C., GP of FHMLSP, L.P.
Date:09/30/2025
 
FHMLSP, L.L.C.
 
Signature:/s/ Steve R. Bailey
Name/Title:By Steve R. Bailey, CFO of FHMLSP, L.L.C.
Date:09/30/2025
 
Frazier Life Sciences Public Overage Fund, L.P.
 
Signature:/s/ Steve R. Bailey
Name/Title:By Steve R. Bailey, CFO of FHMLSP Overage, L.L.C., GP of FHMLSP Overage, L.P., GP of Frazier Life Sciences Public Overage Fund, L.P.
Date:09/30/2025
 
FHMLSP Overage, L.P.
 
Signature:/s/ Steve R. Bailey
Name/Title:By Steve R. Bailey, CFO of FHMLSP Overage, L.L.C., GP of FHMLSP Overage, L.P.
Date:09/30/2025
 
FHMLSP Overage, L.L.C.
 
Signature:/s/ Steve R. Bailey
Name/Title:By Steve R. Bailey, CFO of FHMLSP Overage, L.L.C.
Date:09/30/2025
 
Frazier Life Sciences X, L.P.
 
Signature:/s/ Steve R. Bailey
Name/Title:By Steve R. Bailey, CFO of FHMLS X, L.L.C., GP of FHMLS X, L.P., GP of Frazier Life Sciences X, L.P.
Date:09/30/2025
 
FHMLS X, L.P.
 
Signature:/s/ Steve R. Bailey
Name/Title:By Steve R. Bailey, CFO of FHMLS X, L.L.C., GP of FHMLS X, L.P.
Date:09/30/2025
 
FHMLS X, L.L.C.
 
Signature:/s/ Steve R. Bailey
Name/Title:By Steve R. Bailey, CFO of FHMLS X, L.L.C.
Date:09/30/2025
 
Frazier Life Sciences XI, L.P.
 
Signature:/s/ Steve R. Bailey
Name/Title:By Steve R. Bailey, CFO of FHMLS XI, L.L.C., GP of FHMLS XI, L.P., GP of Frazier Life Sciences XI, L.P.
Date:09/30/2025
 
FHMLS XI, L.P.
 
Signature:/s/ Steve R. Bailey
Name/Title:By Steve R. Bailey, CFO of FHMLS XI, L.L.C., GP of FHMLS XI, L.P.
Date:09/30/2025
 
FHMLS XI, L.L.C.
 
Signature:/s/ Steve R. Bailey
Name/Title:By Steve R. Bailey, CFO of FHMLS XI, L.L.C.
Date:09/30/2025
 
James N. Topper
 
Signature:/s/ Steve R. Bailey
Name/Title:By Steve R. Bailey, Attorney-in-Fact for James N. Topper, pursuant to a Power of Attorney, a copy of which was filed with the SEC on July 31, 2017
Date:09/30/2025
 
Patrick J. Heron
 
Signature:/s/ Steve R. Bailey
Name/Title:By Steve R. Bailey, Attorney-in-Fact for Patrick J. Heron, pursuant to a Power of Attorney, a copy of which was filed with the SEC on July 31, 2017
Date:09/30/2025