Company: CSTL
Filing Date: 2025-03-28
Form Type: PRE 14A
Source: 0001447362-25-000050
Chunk: 41

Company: CASTLE BIOSCIENCES INC
Filing Date: 2025-03-28
Form: PRE 14A
Chunk 41
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 Based on information reported in a Schedule 13G filed with the SEC on February 13, 2024 as supplemented by information reported in a Schedule 13F-HR filed with the SEC on January 31, 2025, and consists of 1,435,665 shares of common stock held by Principal Financial Group, Inc. (“Principal”). Principal has sole voting power with respect to 1,435,665 shares of common stock. The address of Principal is 711 Hight Street, Des Moines, IA 50392.

(5) Consists of (i) 13,291 shares of common stock held by The Bradbury Family Trust and (vi) 49,921 shares of common stock issuable upon the exercise of stock options that are exercisable or will be exercisable or RSUs settleable within 60 days of March 21, 2025. Mr. Bradbury is the managing member of BioBrit and has voting and investment power of the shares held

#### Castle Biosciences 2025 Proxy Statement43
| Security Ownership of Certain Beneficial Owners and Management |

by BioBrit. The address of BioBrit is 2223 Avenida de la Playa, Suite 108, La Jolla, CA 92037. Mr. Bradbury and his spouse are trustees of The Bradbury Family Trust and their children are beneficiaries.

(6) Consists of (i) 13,781 shares of common stock and (ii) 13,012 shares of common stock issuable upon the exercise of stock options that are exercisable or will be exercisable or RSUs settleable within 60 days of March 21, 2025.

(7) Consists of (i) 13,291 shares of common stock and (ii) 74,669 shares of common stock issuable upon the exercise of stock options that are exercisable or will be exercisable or RSUs settleable within 60 days of March 21, 2025.

(8) Consists of 5,329 shares of common stock issuable upon the RSUs settleable within 60 days of March 21, 2025.

(9) Consists of (i) 18,581 shares of common stock and (ii) 13,012 shares of common stock issuable upon the exercise of stock options that are exercisable or will be exercisable or RSUs settleable within 60 days of March 21, 2025.

(10) Consists