0001193125-21-044881.txt : 20210216 0001193125-21-044881.hdr.sgml : 20210216 20210216161128 ACCESSION NUMBER: 0001193125-21-044881 CONFORMED SUBMISSION TYPE: SC 13G/A PUBLIC DOCUMENT COUNT: 2 FILED AS OF DATE: 20210216 DATE AS OF CHANGE: 20210216 GROUP MEMBERS: JOSEPH C. COOK III GROUP MEMBERS: MGC VENTURE PARTNERS 2013, L.P. GROUP MEMBERS: MGC VENTURE PARTNERS 2018 GP, LLC GROUP MEMBERS: MGC VENTURE PARTNERS 2018, L.P. GROUP MEMBERS: MGC VENTURE PARTNERS QP 2018, L.P. SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: CASTLE BIOSCIENCES INC CENTRAL INDEX KEY: 0001447362 STANDARD INDUSTRIAL CLASSIFICATION: SERVICES-MEDICAL LABORATORIES [8071] IRS NUMBER: 770701774 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A SEC ACT: 1934 Act SEC FILE NUMBER: 005-91094 FILM NUMBER: 21638448 BUSINESS ADDRESS: STREET 1: 820 S FRIENDSWOOD DRIVE STREET 2: SUITE 201 CITY: FRIENDSWOOD STATE: TX ZIP: 77546 BUSINESS PHONE: 866-788-9007 MAIL ADDRESS: STREET 1: 820 S FRIENDSWOOD DRIVE STREET 2: SUITE 201 CITY: FRIENDSWOOD STATE: TX ZIP: 77546 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: MGC Venture Partners 2013 GP, LLC CENTRAL INDEX KEY: 0001783292 IRS NUMBER: 462057707 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A BUSINESS ADDRESS: STREET 1: C/O MOUNTAIN GROUP CAPITAL, LLC STREET 2: 3835 CLEGHORN AVE., SUITE 300 CITY: NASHVILLE STATE: TN ZIP: 37203 BUSINESS PHONE: 615-843-9104 MAIL ADDRESS: STREET 1: C/O MOUNTAIN GROUP CAPITAL, LLC STREET 2: 3835 CLEGHORN AVE., SUITE 300 CITY: NASHVILLE STATE: TN ZIP: 37203 SC 13G/A 1 d132358dsc13ga.htm SC 13G/A SC 13G/A

 

 

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

 

 

SCHEDULE 13G/A

Under the Securities Exchange Act of 1934

Amendment No. 1

 

 

Castle Biosciences, Inc.

(Name of Issuer)

Common Stock, $0.001 par value

(Title of Class of Securities)

14843C105

(CUSIP Number)

December 31, 2020

(Date of Event Which Requires Filing of this Statement)

 

 

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

☐ 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.

The information required in 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.

 

 

 

CUSIP NO. 14843C105    13G    Page 2 of 12 Pages

 

  1    

  NAME OF REPORTING PERSON

  I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

 

  MGC Venture Partners 2013 GP, LLC

  2    

  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

  (a)  ☐        (b)  ☐

 

  3    

  SEC USE ONLY

 

  4    

  CITIZENSHIP OR PLACE OF ORGANIZATION

 

  Delaware

NUMBER OF

SHARES

  BENEFICIALLY  

OWNED BY

EACH

REPORTING

PERSON

WITH

     5     

  SOLE VOTING POWER

 

  1,526

  6     

  SHARED VOTING POWER

 

  501,884

  7     

  SOLE DISPOSITIVE POWER

 

  1,526

  8     

  SHARED DISPOSITIVE POWER

 

  501,884

  9    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  503,410

10    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

 

  (a) ☐

11    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

 

  2.1%(1)

12    

  TYPE OF REPORTING PERSON*

 

  OO

 

(1)

Based on 23,844,426 shares of common stock outstanding as of December 15, 2020, as reported in the Issuer’s prospectus supplement, dated December 15, 2020, to a base prospectus, dated December 14, 2020, included in the Company’s effective shelf registration statement on Form S-3 (File No. 333-251331), which was filed with the U.S. Securities and Exchange Commission on December 14, 2020.

CUSIP NO. 14843C105    13G    Page 3 of 12 Pages

 

  1    

  NAME OF REPORTING PERSON

  I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

 

  MGC Venture Partners 2013, L.P.

  2    

  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

  (a)  ☐        (b)  ☐

 

  3    

  SEC USE ONLY

 

  4    

  CITIZENSHIP OR PLACE OF ORGANIZATION

 

  Delaware

NUMBER OF

SHARES

  BENEFICIALLY  

OWNED BY

EACH

REPORTING

PERSON

WITH

     5     

  SOLE VOTING POWER

 

  0

  6     

  SHARED VOTING POWER

 

  501,884

  7     

  SOLE DISPOSITIVE POWER

 

  0

  8     

  SHARED DISPOSITIVE POWER

 

  501,884

  9    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  501,884

10    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

 

  (a) ☐

11    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

 

  2.1%(1)

12    

  TYPE OF REPORTING PERSON*

 

  PN

 

(1)

Based on 23,844,426 shares of common stock outstanding as of December 15, 2020, as reported in the Issuer’s prospectus supplement, dated December 15, 2020, to a base prospectus, dated December 14, 2020, included in the Company’s effective shelf registration statement on Form S-3 (File No. 333-251331), which was filed with the U.S. Securities and Exchange Commission on December 14, 2020.

CUSIP NO. 14843C105    13G    Page 4 of 12 Pages

 

  1    

  NAME OF REPORTING PERSON

  I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

 

  MGC Venture Partners 2018 GP, LLC

  2    

  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

  (a)  ☐        (b)  ☐

 

  3    

  SEC USE ONLY

 

  4    

  CITIZENSHIP OR PLACE OF ORGANIZATION

 

  Delaware

NUMBER OF

SHARES

  BENEFICIALLY  

OWNED BY

EACH

REPORTING

PERSON

WITH

     5     

  SOLE VOTING POWER

 

  0

  6     

  SHARED VOTING POWER

 

  125,000

  7     

  SOLE DISPOSITIVE POWER

 

  0

  8     

  SHARED DISPOSITIVE POWER

 

  125,000

  9    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  125,000

10    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

 

  (a) ☐

11    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

 

  0.5%(1)

12    

  TYPE OF REPORTING PERSON*

 

  OO

 

(1)

Based on 23,844,426 shares of common stock outstanding as of December 15, 2020, as reported in the Issuer’s prospectus supplement, dated December 15, 2020, to a base prospectus, dated December 14, 2020, included in the Company’s effective shelf registration statement on Form S-3 (File No. 333-251331), which was filed with the U.S. Securities and Exchange Commission on December 14, 2020.

CUSIP NO. 14843C105    13G    Page 5 of 12 Pages

 

  1    

  NAME OF REPORTING PERSON

  I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

 

  MGC Venture Partners 2018, L.P.

  2    

  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

  (a)  ☐        (b)  ☐

 

  3    

  SEC USE ONLY

 

  4    

  CITIZENSHIP OR PLACE OF ORGANIZATION

 

  Delaware

NUMBER OF

SHARES

  BENEFICIALLY  

OWNED BY

EACH

REPORTING

PERSON

WITH

     5     

  SOLE VOTING POWER

 

  0

  6     

  SHARED VOTING POWER

 

  57,599

  7     

  SOLE DISPOSITIVE POWER

 

  0

  8     

  SHARED DISPOSITIVE POWER

 

  57,599

  9    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  57,599

10    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

 

  (a) ☐

11    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

 

  0.2%(1)

12    

  TYPE OF REPORTING PERSON*

 

  PN

 

(1)

Based on 23,844,426 shares of common stock outstanding as of December 15, 2020, as reported in the Issuer’s prospectus supplement, dated December 15, 2020, to a base prospectus, dated December 14, 2020, included in the Company’s effective shelf registration statement on Form S-3 (File No. 333-251331), which was filed with the U.S. Securities and Exchange Commission on December 14, 2020.

CUSIP NO. 14843C105    13G    Page 6 of 12 Pages

 

  1    

  NAME OF REPORTING PERSON

  I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

 

  MGC Venture Partners QP 2018, L.P.

  2    

  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

  (a)  ☐        (b)  ☐

 

  3    

  SEC USE ONLY

 

  4    

  CITIZENSHIP OR PLACE OF ORGANIZATION

 

  Delaware

NUMBER OF

SHARES

  BENEFICIALLY  

OWNED BY

EACH

REPORTING

PERSON

WITH

     5     

  SOLE VOTING POWER

 

  0

  6     

  SHARED VOTING POWER

 

  67,401

  7     

  SOLE DISPOSITIVE POWER

 

  0

  8     

  SHARED DISPOSITIVE POWER

 

  67,401

  9    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  67,401

10    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

 

  (a) ☐

11    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

 

  0.3%(1)

12    

  TYPE OF REPORTING PERSON*

 

  PN

 

(1)

Based on 23,844,426 shares of common stock outstanding as of December 15, 2020, as reported in the Issuer’s prospectus supplement, dated December 15, 2020, to a base prospectus, dated December 14, 2020, included in the Company’s effective shelf registration statement on Form S-3 (File No. 333-251331), which was filed with the U.S. Securities and Exchange Commission on December 14, 2020.

CUSIP NO. 14843C105    13G    Page 7 of 12 Pages

 

  1    

  NAME OF REPORTING PERSON

  I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

 

  Joseph C. Cook III

  2    

  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

  (a)  ☐        (b)  ☐

 

  3    

  SEC USE ONLY

 

  4    

  CITIZENSHIP OR PLACE OF ORGANIZATION

 

  United States of America

NUMBER OF

SHARES

  BENEFICIALLY  

OWNED BY

EACH

REPORTING

PERSON

WITH

     5     

  SOLE VOTING POWER

 

  112,178

  6     

  SHARED VOTING POWER

 

  629,127

  7     

  SOLE DISPOSITIVE POWER

 

  112,178

  8     

  SHARED DISPOSITIVE POWER

 

  629,127

  9    

  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

  741,305

10    

  CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

 

  (a) ☐

11    

  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

 

  3.1%(1)

12    

  TYPE OF REPORTING PERSON*

 

  IN

 

(1)

Based on 23,844,426 shares of common stock outstanding as of December 15, 2020, as reported in the Issuer’s prospectus supplement, dated December 15, 2020, to a base prospectus, dated December 14, 2020, included in the Company’s effective shelf registration statement on Form S-3 (File No. 333-251331), which was filed with the U.S. Securities and Exchange Commission on December 14, 2020.

CUSIP NO. 14843C105    13G    Page 8 of 12 Pages

 

Item 1(a).

Name of Issuer.

Castle Biosciences, Inc. (the “Issuer”)

 

Item 1(b).

Address of Issuer’s Principal Executive Offices.

820 S. Friendswood Dr., Suite 201

Friendswood, TX 77546

 

Item 2(a).

Name of Person Filing.

MGC Venture Partners 2013 GP, LLC

MGC Venture Partners 2013, L.P.

MGC Venture Partners 2018 GP, LLC

MGC Venture Partners 2018, L.P.

MGC Venture Partners QP 2018, L.P.

Joseph C. Cook III

 

Item 2(b).

Address or Principal Business Office or, if None, Residence.

C/O Mountain Group Capital, LLC

3835 Cleghorn Ave., Suite 300

Nashville, TN 37215

 

Item 2(c).

Organization/Citizenship.

 

MGC Venture Partners 2013 GP, LLC    Delaware
MGC Venture Partners 2013, L.P.    Delaware
MGC Venture Partners 2018 GP, LLC    Delaware
MGC Venture Partners 2018, L.P.    Delaware
MGC Venture Partners QP 2018, L.P.    Delaware
Joseph C. Cook III    United States of America

 

Item 2(d).

Title of Class Of Securities.

Common Stock, $0.001 par value

 

Item 2(e).

CUSIP Number.

14843C105

 

Item 3.

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

Not Applicable.

CUSIP NO. 14843C105    13G    Page 9 of 12 Pages

 

Item 4.

Ownership.

Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.

MGC Venture Partners 2013 GP, LLC (“MGC 2013 GP”) is the general partner of MGC Venture Partners 2013, L.P. (“MGC 2013 LP”). MGC Venture Partners 2018 GP, LLC (“MGC 2018 GP”) is the general partner of MGC Venture Partners 2018, L.P. (“MGC 2018 LP”) and MGC Venture Partners QP 2018, L.P. (“MGC QP 2018 LP”). Joseph C. Cook III is a managing director of MGC 2013 GP and is a managing partner of MGC 2018 GP. As such, Mr. Cook may be deemed to have shared beneficial ownership over shares of common stock held by MGC 2013 LP, MGC 2018 LP and MGC QP 2018 LP. Mr. Cook, however, disclaims beneficial ownership of such shares of common stock, to the extent of his pecuniary interest therein.

The ownership information below represents beneficial ownership of common stock of the Issuer based on 23,844,426 shares of common stock outstanding as of December 15, 2020, as reported in the Issuer’s prospectus supplement, dated December 15, 2020, to a base prospectus, dated December 14, 2020, included in the Company’s effective shelf registration statement on Form S-3 (File No. 333-251331), which was filed with the U.S. Securities and Exchange Commission on December 14, 2020.

 

Person

    Total
Shares
Of
Common
Stock
Beneficially
Owned		     Percent
of
Class		     Sole
Voting
Power		      Shared
Voting
Power		      Sole
Power
to
Dispose		      Shared
Power
to
Dispose		  

MGC Venture Partners 2013 GP, LLC

      503,410  (1)      2.1 %      1,526        501,884        1,526        501,884  

MGC Venture Partners 2013, L.P.

      501,884  (1)      2.1 %      —          501,884        —          501,884  

MGC Venture Partners 2018 GP, LLC

      125,000  (2)      0.5 %      —          125,000        —          125,000  

MGC Venture Partners 2018, L.P.

      57,599  (2)      0.2 %      —          57,599        —          57,599  

MGC Venture Partners QP 2018, L.P.

      67,401  (2)      0.3 %      —          67,401        —          67,401  

Joseph C. Cook III

      741,305       3.1 %      112,178        629,127        112,178        629,127  

 

(1)

Includes shares of common stock held by MGC 2013 LP, of which MGC 2013 GP is the general partner.

(2)

Includes 57,599 shares of common stock held by MGC 2018 LP and 67,401 shares of common stock held by MGC QP 2018 LP, of which MGC 2018 GP is the general partner.

 

Item 5.

Ownership of Five Percent or Less of a Class.

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than 5 percent of the class of securities, check the following  ☒.

CUSIP NO. 14843C105    13G    Page 10 of 12 Pages

 

Item 6.

Ownership of More than Five Percent on Behalf of Another Person.

Not Applicable.

 

Item 7.

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

Not Applicable.

 

Item 8.

Identification and Classification of Members of the Group.

Not Applicable.

 

Item 9.

Notice of Dissolution of Group.

Not Applicable.

 

Item 10.

Certifications.

Not Applicable.

CUSIP NO. 14843C105    13G    Page 11 of 12 Pages

 

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

 

    MGC Venture Partners 2013 GP, LLC
Date: February 16, 2021      
    By:  

/s/ Joseph C. Cook III

    Name: Joseph C. Cook III
    Title: Managing Member
    MGC Venture Partners 2013, L.P.
Date: February 16, 2021      
    By:  

/s/ Joseph C. Cook III

    Name: Joseph C. Cook III
    Title: Managing Member of the General Partner
    MGC Venture Partners 2018 GP, LLC
Date: February 16, 2021      
    By:  

/s/ Jason S. Ferguson

    Name: Jason S. Ferguson
    Title: Managing Partner
    MGC Venture Partners 2018, L.P.
Date: February 16, 2021      
    By:  

/s/ Jason S. Ferguson

    Name: Jason S. Ferguson
    Title: Managing Partner of the General Partner
    MGC Venture Partners QP 2018, L.P.
Date: February 16, 2021      
    By:  

/s/ Jason S. Ferguson

    Name: Jason S. Ferguson
    Title: Managing Partner of the General Partner
Date: February 16, 2021     By:  

/s/ Joseph C. Cook III

    Name: Joseph C. Cook III

 EX-99.1 2 d132358dex991.htm EX-99.1 EX-99.1

EXHIBIT 99.1 – JOINT FILING AGREEMENT

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, each of the undersigned hereby agrees to the joint filing with the other reporting person of a statement on Schedule 13G (including amendments thereto) with respect to the common stock, $0.001 par value of Castle Biosciences, Inc. and that this Agreement be included as an Exhibit to such joint filing.

IN WITNESS WHEREOF, the undersigned hereby execute this Agreement this 16th day of February, 2021.

 

MGC Venture Partners 2013 GP, LLC
By:  

/s/ Joseph C. Cook III

Name:   Joseph C. Cook III
Title:   Managing Member
MGC Venture Partners 2013, L.P.
By:  

/s/ Joseph C. Cook III

Name:   Joseph C. Cook III
Title:   Managing Member of the General Partner
MGC Venture Partners 2018 GP, LLC
By:  

/s/ Jason S. Ferguson

Name:   Jason S. Ferguson
Title:   Managing Partner
MGC Venture Partners 2018, L.P.
By:  

/s/ Jason S. Ferguson

Name:   Jason S. Ferguson
Title:   Managing Partner of the General Partner
MGC Venture Partners QP 2018, L.P.
By:  

/s/ Jason S. Ferguson

Name:   Jason S. Ferguson
Title:   Managing Partner of the General Partner
By:  

/s/ Joseph C. Cook III

Name:   Joseph C. Cook III