CASTLE BIOSCIENCES INC — Director's Dealing 2021

Jun 21, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CASTLE BIOSCIENCES INC (CSTL)
CIK: 0001447362
Period of Report: 2021-06-17

Reporting Person: Juvenal Tobin W (Chief Commercial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-06-17	Common Stock	M	5263	$2.36	Acquired	8090	Direct
2021-06-17	Common Stock	M	4737	$2.39	Acquired	12827	Direct
2021-06-17	Common Stock	S	10000	$75.40	Disposed	2827	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-06-17	Stock option (right to buy)	$2.36	M	5263	Disposed	2027-07-20	Common Stock (5263.0)	Direct
2021-06-17	Stock option (right to buy)	$2.39	M	4737	Disposed	2028-05-09	Common Stock (4737.0)	Direct

Footnotes

F1: These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on May 15, 2021.

F2: This transaction was executed in multiple trades at prices ranging from $75.00 to $75.90, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F3: 25% of the 11,484 shares originally subject to the option vested on July 21, 2018, and the remaining shares vest in 36 equal monthly installments thereafter.

F4: 25% of the 24,610 shares originally subject to the option vested on May 10, 2019, and the remaining shares vest in 36 equal monthly installments thereafter.