Filing Details

The remainder of this cover page shall be filled out for a reporting persons 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

  H.I.G. BioVentures Calhoun, LLC

  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 of Common Stock

  Shared voting power

  2,010,037 shares of Common Stock (1)

  Sole dispositive power

  0 shares of Common Stock

  Shared dispositive power

  2,010,037 shares of Common Stock (1)

  Aggregate amount beneficially owned by each reporting person

  2,010,037 (1)

  Check if the aggregate amount in Row (9) excludes certain shares (see instructions)

  ☐

  Percent of class represented by amount in Row (9)

  7.34% (2)

  Type of reporting person (see instructions)

  OO

Consists of 2,010,037 shares of Common Stock held of record by H.I.G. BioVentures Calhoun, LLC.

Percentage ownership is calculated based on 27,366,746 shares of common stock of the Issuer outstanding as of December 31, 2021.

  Names of reporting persons

  H.I.G.-GPII, Inc.

  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 of Common Stock

  Shared voting power

  2,010,037 shares of Common Stock (1)

  Sole dispositive power

  0 shares of Common Stock

  Shared dispositive power

  2,010,037 shares of Common Stock (1)

  Aggregate amount beneficially owned by each reporting person

  2,010,037 (1)

  Check if the aggregate amount in Row (9) excludes certain shares (see instructions)

  ☐

  Percent of class represented by amount in Row (9)

  7.34% (2)

  Type of reporting person (see instructions)

  OO

Consists of 2,010,037 shares of Common Stock held of record by H.I.G. BioVentures Calhoun, LLC. H.I.G.-GPII, Inc. is the Manager of H.I.G. BioVentures Calhoun, LLC and has sole voting and investment control over the Shares owned by H.I.G. BioVentures Calhoun, LLC. Anthony Tamer and Sami Mnaymneh are the sole shareholders of H.I.G.-GPII, Inc. and may be deemed to share beneficial ownership of the shares held by H.I.G. BioVentures Calhoun, LLC.

Percentage ownership is calculated based on 27,366,746 shares of common stock of the Issuer outstanding as of December 31, 2021.

  Names of reporting persons

  Anthony Tamer

  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 of Common Stock

  Shared voting power

  2,010,037 shares of Common Stock (1)

  Sole dispositive power

  0 shares of Common Stock

  Shared dispositive power

  2,010,037 shares of Common Stock (1)

  Aggregate amount beneficially owned by each reporting person

  2,010,037 (1)

  Check if the aggregate amount in Row (9) excludes certain shares (see instructions)

  ☐

  Percent of class represented by amount in Row (9)

  7.34% (2)

  Type of reporting person (see instructions)

  IN

Consists of 2,010,037 shares of Common Stock held of record by H.I.G. BioVentures Calhoun, LLC. H.I.G.-GPII, Inc. is the Manager of H.I.G. BioVentures Calhoun, LLC and has sole voting and investment control over the Shares owned by H.I.G. BioVentures Calhoun, LLC. Anthony Tamer and Sami Mnaymneh are the sole shareholders of H.I.G.-GPII, Inc. and may be deemed to share beneficial ownership of the shares held by H.I.G. BioVentures Calhoun, LLC.

Percentage ownership is calculated based on 27,366,746 shares of common stock of the Issuer outstanding as of December 31, 2021.

  Names of reporting persons

  Sami Mnaymneh

  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 of Common Stock

  Shared voting power

  2,010,037 shares of Common Stock (1)

  Sole dispositive power

  0 shares of Common Stock

  Shared dispositive power

  2,010,037 shares of Common Stock (1)

  Aggregate amount beneficially owned by each reporting person

  2,010,037 (1)

  Check if the aggregate amount in Row (9) excludes certain shares (see instructions)

  ☐

  Percent of class represented by amount in Row (9)

  7.34% (2)

  Type of reporting person (see instructions)

  IN

Consists of 2,010,037 shares of Common Stock held of record by H.I.G. BioVentures Calhoun, LLC. H.I.G.-GPII, Inc. is the Manager of H.I.G. BioVentures Calhoun, LLC and has sole voting and investment control over the Shares owned by H.I.G. BioVentures Calhoun, LLC. Anthony Tamer and Sami Mnaymneh are the sole shareholders of H.I.G.-GPII, Inc. and may be deemed to share beneficial ownership of the shares held by H.I.G. BioVentures Calhoun, LLC .

Percentage ownership is calculated based on 27,366,746 shares of common stock of the Issuer outstanding as of December 31, 2021.

Name of Issuer:

Address of Issuers Principal Executive Offices:

(a) Name of Person Filing:

H.I.G. BioVenturesCalhoun, LLC, a Delaware limited liability company;

H.I.G.-GPII, Inc., a Delaware Corporation (and, together with H.I.G. BioVentures Calhoun, LLC, the H.I.G. Entities);

Anthony Tamer, a United States Citizen; and

Sami Mnaymneh, a United States Citizen

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

Citizenship:

Title of Class of Securities:

CUSIP Number:

If this statement is filed pursuant to §§240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:

Ownership.

Amount beneficially owned:

Percent of class:

Number of shares as to which the person has:

Sole power to vote or to direct the vote:

Shared power to vote or to direct the vote:

Sole power to dispose or to direct the disposition of:

Shared power to dispose or to direct the disposition of:

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 Group.

Certifications.

Exhibit

Description