Castle Biosciences Amends Articles of Incorporation

TL;DR

Castle Biosciences amended its corporate charter on 8/5/25.

AI Summary

Castle Biosciences, Inc. filed an 8-K on August 8, 2025, reporting an amendment to its Articles of Incorporation, effective August 5, 2025. This filing indicates a change in the company's corporate structure or governance documents.

Why It Matters

Changes to a company's articles of incorporation can impact its corporate governance, shareholder rights, or the scope of its business activities.

Risk Assessment

Risk Level: low — This filing is a routine corporate housekeeping matter and does not appear to involve significant financial or operational changes.

Key Players & Entities

• Castle Biosciences, Inc. (company) — Registrant
• August 5, 2025 (date) — Effective date of amendment
• August 8, 2025 (date) — Filing date of the 8-K
• Delaware (jurisdiction) — State of incorporation

FAQ

Key Financial Figures

• $0.001 — ange on which registered Common Stock, $0.001 par value per share CSTL The Nasdaq Glo

Filing Documents

• cstl-20250805.htm (8-K) — 63KB
• exhibit31-castlexamendedan.htm (EX-3.1) — 179KB
• 0001447362-25-000099.txt ( ) — 403KB
• cstl-20250805.xsd (EX-101.SCH) — 2KB
• cstl-20250805_lab.xml (EX-101.LAB) — 23KB
• cstl-20250805_pre.xml (EX-101.PRE) — 13KB
• cstl-20250805_htm.xml (XML) — 3KB

03 Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year

Item 5.03 Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year. On August 5, 2025, the board of directors (the "Board") of Castle Biosciences, Inc. (the "Company") adopted amended and restated bylaws of the Company (as amended and restated, the "A&R Bylaws"), effective as of such adoption date. The following is a summary of the material changes made to the Company's amended and restated bylaws in effect prior to the adoption of the A&R Bylaws by the A&R Bylaws and is qualified in its entirety by reference to the full text of the A&R Bylaws, a copy of which is attached to this Current Report on Form 8-K as Exhibit 3.1 and incorporated herein by reference. Bylaw Bylaw Change 1 Cause the Bylaws to identify the registered office and agent by referencing the Company's certificate of incorporation, as amended from time to time (the "Certificate of Incorporation"). 5(a) Revise who has authority to postpone, reschedule or cancel a meeting of stockholders. Require that stockholders who wish to nominate directors for election to the Board must be stockholders of record at the time of the annual meeting in addition to at the time they give notice of their proposed nomination. Clarify how a stockholder may make nominations for the Board and submit other business to come before an annual meeting of stockholders. 5(b)(i) Clarify the background information that must be provided regarding proponents of nominees to the Board and about the nominees themselves. Limit the maximum number of nominees to the Board that a stockholder may submit to be equal to the number of directors to be elected at the applicable meeting. Prohibit the nomination of substitute or alternate nominees to the Board without timely notice in accordance with the A&R Bylaws. 5(b)(ii) Require advance disclosure of resolutions or amendments to the A&R Bylaws that are the subject of a proposal to be brought before an annual meeting of stockholders. 5(b)(iii) Increase the period of t

01 Financial Statements and Exhibits

Item 9.01 Financial Statements and Exhibits. (d) Exhibits. Exhibit Number Description 3.1 Amended and Restated Bylaws of Castle Biosciences, Inc. 104 Inline XBRL for the cover page of this Current Report on Form 8-K.

SIGNATURES

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has caused this report to be signed on its behalf by the undersigned hereunto duly authorized. CASTLE BIOSCIENCES, INC. By: /s/ Frank Stokes Frank Stokes Chief Financial Officer Date: August 8, 2025