CASTLE BIOSCIENCES INC — Director's Dealing 2021

Jun 10, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CASTLE BIOSCIENCES INC (CSTL)
CIK: 0001447362
Period of Report: 2021-06-08

Reporting Person: Spiess Bernhard E. (Chief Business Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-06-08	Common Stock	M	8989	$1.92	Acquired	22551	Direct
2021-06-08	Common Stock	S	8989	$70	Disposed	13562	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-06-08	Stock option (right to buy)	$1.92	M	8989	Disposed	2026-05-23	Common Stock (8989.0)	Direct

Footnotes

F1: These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on May 24, 2021.

F2: Includes 1,815 shares acquired on February 26, 2021 under the Issuer's employee stock purchase plan.

F3: 25% of the 169,592 shares originally subject to the option vested on May 2, 2017, and the remaining shares vested in 36 equal monthly installments thereafter.