CASTLE BIOSCIENCES INC — Director's Dealing 2021

Jul 23, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CASTLE BIOSCIENCES INC (CSTL)
CIK: 0001447362
Period of Report: 2021-07-21

Reporting Person: MAETZOLD DEREK J (Director, Pres. & Chief Exec. Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-07-21	Common Stock	S	2125	$66.526	Disposed	413893	Direct
2021-07-21	Common Stock	S	1900	$67.793	Disposed	411993	Direct
2021-07-21	Common Stock	S	5975	$68.683	Disposed	406018	Direct
2021-07-21	Common Stock	S	167	$66.38	Disposed	154626	Indirect
2021-07-21	Common Stock	S	166	$67.747	Disposed	154460	Indirect
2021-07-21	Common Stock	S	500	$68.684	Disposed	153960	Indirect
2021-07-21	Common Stock	S	167	$66.38	Disposed	177467	Indirect
2021-07-21	Common Stock	S	167	$67.747	Disposed	177300	Indirect
2021-07-21	Common Stock	S	500	$68.684	Disposed	176800	Indirect
2021-07-21	Common Stock	S	166	$66.38	Disposed	164867	Indirect
2021-07-21	Common Stock	S	167	$67.747	Disposed	164700	Indirect
2021-07-21	Common Stock	S	500	$68.684	Disposed	164200	Indirect

Footnotes

F1: These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on December 11, 2020.

F2: This transaction was executed in multiple trades at prices ranging from $66.080 to $67.000, 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: This transaction was executed in multiple trades at prices ranging from $67.390 to $68.320, 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.

F4: This transaction was executed in multiple trades at prices ranging from $68.405 to $69.020, 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.

F5: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F6: This transaction was executed in multiple trades at prices ranging from $66.080 to $66.700, 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.

F7: Held by DJM Grantor Retained Annuity Trust No. 1 of which the Reporting Person is the trustee and beneficiary.

F8: This transaction was executed in multiple trades at prices ranging from $67.300 to $67.970, 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.

F9: This transaction was executed in multiple trades at prices ranging from $68.450 to $68.980, 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.

F10: Held by The Maetzold Descendants 2020 Trust of which the Reporting Person's spouse is the trustee and the Reporting Person's spouse and their children are beneficiaries.

F11: Held by Derek Maetzold 2020 Irrevocable Trust of which the Reporting Person is the trustee and his children are beneficiaries.