SC 13G/A: CASTLE BIOSCIENCES INC

AI Summary

SC 13G/A filing by CASTLE BIOSCIENCES INC.

Risk Assessment

Risk Level: low

Key Financial Figures

• $0.001 — me of Issuer) Common Stock, par value $0.001 (Title of Class of Securities) 1484

Filing Documents

• fp0090935-8_sc13ga.htm (SC 13G/A) — 44KB
• 0001398344-24-020888.txt ( ) — 46KB

(a)

Item 1. (a) Name of Issuer: Castle Biosciences, Inc (b) Address of Issuer’s Principal Executive Offices: 505 S. Friendswood Dr., Suite 401 Friendswood, TX 77546

(a)

Item 2. (a) Name of Person Filing: Granahan Investment Management LLC (b) Address of Principal Business Office or, if None, Residence: Wyman Street, Suite 460 Waltham, MA 02451 (c) Citizenship: State of Massachusetts (d) Title of Class of Securities: Common Stock, par value $0.001 (e) CUSIP Number: 14843C105

If This Statement is Filed Pursuant to Rule 13d-1(b), or 13d-2(b) or (c), Check Whether the Person

Item 3. If This Statement is Filed Pursuant to Rule 13d-1(b), or 13d-2(b) or (c), Check Whether the Person Filing is a: (a) [ ] Broker or dealer registered under Section 15 of the Exchange Act. (b) [ ] Bank as defined in Section 3(a)(6) of the Exchange Act. (c) [ ] Insurance company as defined in Section 3(a)(19) of the Exchange Act. (d) [ ] Investment company registered under Section 8 of the Investment Company Act. (e [X] An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E); (f) [ ] An employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F); (g) [ ] A parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G); (h) [ ] A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act; (i) [ ] A church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act; (j) [ ] Group, in accordance with Rule 13d-1(b)(1)(ii)(J). CUSIP NO. 14843C105 13G Page 4 of 5 Pages

Ownership

Item 4. Ownership. (a) Amount beneficially owned: 425,220 (b) Percent of class: 1.53% (c) Number of shares as to which the person has: (i) Sole power to vote or to direct the vote: 335,941 (ii) Shared power to vote or to direct the vote: 0 (iii) Sole power to dispose or to direct the disposition of: 425,220 (iv) Shared power to dispose or to direct the disposition of: 0

Ownership of Five Percent or Less of a Class

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 five percent of the class of securities, check the following. [ ]

Ownership of More than Five Percent on Behalf of Another Person

Item 6. Ownership of More than Five Percent on Behalf of Another Person. All of the Shares set forth in Item 4 are owned by various investment advisory clients of Granahan Investment Management LLC, which is deemed to be a beneficial owner of those shares pursuant to Rule 13d-3 under the Securities Exchange Act of 1934, due to its discretionary power to make investment decisions over such shares and/or its ability to vote such shares.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by

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

Identification and Classification of Members of the Group

Item 8. Identification and Classification of Members of the Group. Not applicable

Notice of Dissolution of Group

Item 9. Notice of Dissolution of Group. Not applicable CUSIP NO. 14843C105 13G Page 5 of 5 Pages

Certification

Item 10. Certification. By signing below the undersigned certifies that, to the best of my knowledge and belief, the securities referred to above were acquired and held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect. 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. Granahan Investment Management LLC By: /s/Brian Granahan Name: Brian Granahan Title: Chief Compliance Officer Date: November 14, 2024