Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

 Names of Reporting Persons

 Frazier Life Sciences IX, L.P.

 Check the Appropriate Box if a Member of a Group (see instructions)

 (a) ☐  (b) ☒

 SEC USE ONLY

 Citizenship or Place of Organization

 Delaware

Number of

Shares  Beneficially 

Owned by

Each

Reporting

Person

With:

 Sole Voting Power

 0 shares

 Shared Voting Power

 1,587,527 shares (1)

 Sole Dispositive Power

 0 shares

 Shared Dispositive Power

 1,587,527 shares (1)

 Aggregate Amount Beneficially Owned by Each Reporting Person

 1,587,527 shares (1)

 Check if the Aggregate Amount in Row (9) Excludes Certain Shares (see instructions)

 ☐

 Percent of Class Represented by Amount in Row 9

 4.2% (2)

 Type of Reporting Person (see instructions)

 PN

Consists of 1,587,527 shares of Common Stock held directly by Frazier Life Sciences IX, L.P. FHMLS IX, L.P. is the general partner of Frazier Life Sciences IX, L.P. and FHMLS IX, L.L.C. is the general partner of FHMLS IX, L.P. Patrick Heron and James Topper are the members of FHMLS IX, L.L.C. and therefore share voting and investment power over the shares held by Frazier Life Sciences IX, L.P.

Based on 38,041,737 shares of Common Stock outstanding on August 2, 2024 as set forth in the Issuer’s Form 10-Q filed with the SEC on August 8, 2024.

 Names of Reporting Persons

 FHMLS IX, L.P.

 Check the Appropriate Box if a Member of a Group (see instructions)

 (a) ☐  (b) ☒

 SEC USE ONLY

 Citizenship or Place of Organization

 Delaware

Number of

Shares  Beneficially 

Owned by

Each

Reporting

Person

With:

 Sole Voting Power

 0 shares

 Shared Voting Power

 1,587,527 shares (1)

 Sole Dispositive Power

 0 shares

 Shared Dispositive Power

 1,587,527 shares (1)

 Aggregate Amount Beneficially Owned by Each Reporting Person

 1,587,527 shares (1)

 Check if the Aggregate Amount in Row (9) Excludes Certain Shares (see instructions)

 ☐

 Percent of Class Represented by Amount in Row 9

 4.2% (2)

 Type of Reporting Person (see instructions)

 PN

Consists of 1,587,527 shares of Common Stock held directly by Frazier Life Sciences IX, L.P. FHMLS IX, L.P. is the general partner of Frazier Life Sciences IX, L.P. and FHMLS IX, L.L.C. is the general partner of FHMLS IX, L.P. Patrick Heron and James Topper are the members of FHMLS IX, L.L.C. and therefore share voting and investment power over the shares held by Frazier Life Sciences IX, L.P.

Based on 38,041,737 shares of Common Stock outstanding on August 2, 2024 as set forth in the Issuer’s Form 10-Q filed with the SEC on August 8, 2024.

 Names of Reporting Persons

 FHMLS IX, L.L.C.

 Check the Appropriate Box if a Member of a Group (see instructions)

 (a) ☐  (b) ☒

 SEC USE ONLY

 Citizenship or Place of Organization

 Delaware

Number of

Shares  Beneficially 

Owned by

Each

Reporting

Person

With:

 Sole Voting Power

 0 shares

 Shared Voting Power

 1,587,527 shares (1)

 Sole Dispositive Power

 0 shares

 Shared Dispositive Power

 1,587,527 shares (1)

 Aggregate Amount Beneficially Owned by Each Reporting Person

 1,587,527 shares (1)

 Check if the Aggregate Amount in Row (9) Excludes Certain Shares (see instructions)

 ☐

 Percent of Class Represented by Amount in Row 9

 4.2% (2)

 Type of Reporting Person (see instructions)

 OO

Consists of 1,587,527 shares of Common Stock held directly by Frazier Life Sciences IX, L.P. FHMLS IX, L.P. is the general partner of Frazier Life Sciences IX, L.P. and FHMLS IX, L.L.C. is the general partner of FHMLS IX, L.P. Patrick Heron and James Topper are the members of FHMLS IX, L.L.C. and therefore share voting and investment power over the shares held by Frazier Life Sciences IX, L.P.

Based on 38,041,737 shares of Common Stock outstanding on August 2, 2024 as set forth in the Issuer’s Form 10-Q filed with the SEC on August 8, 2024.

 Names of Reporting Persons

 James Topper

 Check the Appropriate Box if a Member of a Group (see instructions)

 (a) ☐  (b) ☒

 SEC USE ONLY

 Citizenship or Place of Organization

 United States Citizen

Number of

Shares  Beneficially 

Owned by

Each

Reporting

Person

With:

 Sole Voting Power

 0 shares

 Shared Voting Power

 1,587,527 shares (1)

 Sole Dispositive Power

 0 shares

 Shared Dispositive Power

 1,587,527 shares (1)

 Aggregate Amount Beneficially Owned by Each Reporting Person

 1,587,527 shares (1)

 Check if the Aggregate Amount in Row (9) Excludes Certain Shares (see instructions)

 ☐

 Percent of Class Represented by Amount in Row 9

 4.2% (2)

 Type of Reporting Person (see instructions)

 IN

Consists of 1,587,527 shares of Common Stock held directly by Frazier Life Sciences IX, L.P. FHMLS IX, L.P. is the general partner of Frazier Life Sciences IX, L.P. and FHMLS IX, L.L.C. is the general partner of FHMLS IX, L.P. Patrick Heron and James Topper are the members of FHMLS IX, L.L.C. and therefore share voting and investment power over the shares held by Frazier Life Sciences IX, L.P.

Based on 38,041,737 shares of Common Stock outstanding on August 2, 2024 as set forth in the Issuer’s Form 10-Q filed with the SEC on August 8, 2024.

 Names of Reporting Persons

 Patrick Heron

 Check the Appropriate Box if a Member of a Group (see instructions)

 (a) ☐  (b) ☒

 SEC USE ONLY

 Citizenship or Place of Organization

 United States Citizen

Number of

Shares  Beneficially 

Owned by

Each

Reporting

Person

With:

 Sole Voting Power

 0 shares

 Shared Voting Power

 1,587,527 shares (1)

 Sole Dispositive Power

 0 shares

 Shared Dispositive Power

 1,587,527 shares (1)

 Aggregate Amount Beneficially Owned by Each Reporting Person

 1,587,527 shares (1)

 Check if the Aggregate Amount in Row (9) Excludes Certain Shares (see instructions)

 ☐

 Percent of Class Represented by Amount in Row 9

 4.2% (2)

 Type of Reporting Person (see instructions)

 IN

Consists of 1,587,527 shares of Common Stock held directly by Frazier Life Sciences IX, L.P. FHMLS IX, L.P. is the general partner of Frazier Life Sciences IX, L.P. and FHMLS IX, L.L.C. is the general partner of FHMLS IX, L.P. Patrick Heron and James Topper are the members of FHMLS IX, L.L.C. and therefore share voting and investment power over the shares held by Frazier Life Sciences IX, L.P.

Based on 38,041,737 shares of Common Stock outstanding on August 2, 2024 as set forth in the Issuer’s Form 10-Q filed with the SEC on August 8, 2024.

Name of Person Filing:

The entities and persons filing this statement (collectively, the “Reporting Persons”) are:

Frazier Life Sciences IX, L.P. (“FLS IX”)

FHMLS IX, L.P.

FHMLS IX, L.L.C.

James Topper (“Topper”)

Patrick Heron (“Heron” and together with Topper, the “Members”)

Address of Principal Business Office or, if none, Residence:

The address and principal business office of the Reporting Persons is:

c/o Frazier Life Sciences Management, L.P.

1001 Page Mill Rd, Building 4, Suite B

Palo Alto, CA 94304

Citizenship:

Entities:

FLS IX

FHMLS IX, L.P.

FHMLS IX, L.L.C

-   Delaware, U.S.A.

-   Delaware, U.S.A.

-   Delaware, U.S.A.

Topper

Heron

-   United States Citizen

-   United States Citizen

(a)

☐   Broker or dealer registered under Section 15 of the Act (15 U.S.C. 78o);

(b)

☐   Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);

(c)

☐   Insurance company as defined in section 3(a)19) of the Act (15 U.S.C. 78c);

(d)

☐   Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);

(e)

☐   An investment adviser in accordance with §240.13d-1(b)(1)(ii)(E);

(f)

☐   An employee benefit plan or endowment fund in accordance with §240.13d-1(b)(1)(ii)(F);

(g)

☐   A parent holding company or control person in accordance with §240.13d-1(b)(1)(ii)(G);

(h)

☐   A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i)

☐   A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j)

☐   A non-U.S. institution in accordance with §240.13d–1(b)(1)(ii)(J);

(k)

☐   Group, in accordance with §240.13d–1(b)(1)(ii)(K).

Amount Beneficially Owned: See Row 9 of cover page for each Reporting Person.

Percent of Class: See Row 11 of cover page for each Reporting Person

Number of shares as to which the person has:

Sole power to vote or to direct the vote: See Row 5 of cover page for each Reporting Person.

Shared power to vote or to direct the vote: See Row 6 of cover page for each Reporting Person.

Sole power to dispose or to direct the disposition of: See Row 7 of cover page for each Reporting Person.

Shared power to dispose or to direct the disposition of: See Row 8 of cover page for each Reporting Person.

Ownership of 5 Percent or Less of a Class

Ownership of More than 5 Percent on Behalf of Another Person

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Control Person.

Identification and Classification of Members of the Group

Notice of Dissolution of a Group

Certification

/s/ Steve R. Bailey

/s/ Steve R. Bailey

/s/ Steve R. Bailey

*

*

/s/ Steve R. Bailey

This Schedule 13G was executed by Steve R. Bailey on behalf of the individuals listed above pursuant to a Power of Attorney, a copy of which was filed with the SEC on July 31, 2017.

/s/ Steve R. Bailey

/s/ Steve R. Bailey

/s/ Steve R. Bailey

*

*

/s/ Steve R. Bailey

This Agreement was executed by Steve R. Bailey on behalf of the individuals listed above pursuant to a Power of Attorney, a copy of which was filed with the SEC on July 31, 2017.