Company: CSTL
Filing Date: 2025-03-28
Form Type: PRE 14A
Source: 0001447362-25-000050
Chunk: 14

Company: CASTLE BIOSCIENCES INC
Filing Date: 2025-03-28
Form: PRE 14A
Chunk 14
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 consideration stockholder feedback, our Board adopted the Director Time Commitment Policy, as outlined below.

• A director who is not also an officer (each, a Section 16 officer), may serve on a total of four (4) public company boards, in addition to our Board, unless approved in advance by our Board.

• A director who also serves as an officer of a public company, including Castle may serve on a total of two (2) public company boards, in addition to our Board, unless approved in advance by our Board.

Our policy requires non-employee directors to notify the Nominating and Corporate Governance Committee if they:

• retire from their principal occupation;

• change the position they held when they became a member of the Board; or

• join the board of directors of a private or public company.

All of our directors are in compliance with this policy as of March 31, 2025.

### CRITERIA FOR BOARD MEMBERSHIP
The Nominating and Corporate Governance Committee assesses many characteristics when reviewing director candidates. One of our top priorities is ensuring that the diverse skill sets of our current and future Board members supports both our near-term and long-term plans.

The factors considered by the Nominating and Corporate Governance Committee include whether the directors, both individually and collectively, can and do provide the integrity, experience, judgment, commitment (including having sufficient time to Castle), skills and expertise appropriate for Castle.

We believe that the backgrounds and qualifications of our directors, considered as a group, should consist of a significant composite mix of experience, knowledge and abilities that will allow the Board to fulfill its responsibilities and should represent an appropriate balance between institutional knowledge and fresh perspectives.

### BOARD STRUCTURE
The Board believes there is no single approach to corporate governance that is appropriate for all companies, and the key consideration in determining whether to implement a particular governance practice is whether that practice promotes the interests of stockholders, taking into account a company’s specific circumstances. The Board has reviewed the rationale for its current classified structure and continues to believe that a classified board is the appropriate board structure for Castle at this time and is in the best interest of our stockholders for the reasons set forth below:

• Long-Term Focus. The Board believes that a classified board encourages directors to look to the long-term best interest of Castle and our stockholders by strengthening the independence of non-employee directors against the often short-term focus of certain stockholders and special interests.

#### 20Castle Biosciences 2025 Proxy Statement
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