CASTLE BIOSCIENCES INC — Director's Dealing 2021

Sep 16, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CASTLE BIOSCIENCES INC (CSTL)
CIK: 0001447362
Period of Report: 2021-09-13

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-09-13	Common Stock	S	1000	$70.644	Disposed	345018	Direct
2021-09-13	Common Stock	S	1400	$71.878	Disposed	343618	Direct
2021-09-13	Common Stock	S	3112	$73.099	Disposed	340506	Direct
2021-09-13	Common Stock	S	2788	$74.049	Disposed	337718	Direct
2021-09-13	Common Stock	S	1700	$74.708	Disposed	336018	Direct
2021-09-13	Common Stock	S	134	$70.473	Disposed	141327	Indirect
2021-09-13	Common Stock	S	200	$71.492	Disposed	141127	Indirect
2021-09-13	Common Stock	S	533	$72.937	Disposed	140594	Indirect
2021-09-13	Common Stock	S	533	$73.994	Disposed	140061	Indirect
2021-09-13	Common Stock	S	266	$74.688	Disposed	139795	Indirect
2021-09-13	Common Stock	S	133	$70.473	Disposed	164167	Indirect
2021-09-13	Common Stock	S	200	$71.492	Disposed	163967	Indirect
2021-09-13	Common Stock	S	534	$72.937	Disposed	163433	Indirect
2021-09-13	Common Stock	S	533	$73.994	Disposed	162900	Indirect
2021-09-13	Common Stock	S	267	$74.688	Disposed	162633	Indirect
2021-09-13	Common Stock	S	133	$70.473	Disposed	151566	Indirect
2021-09-13	Common Stock	S	200	$71.492	Disposed	151366	Indirect
2021-09-13	Common Stock	S	533	$72.937	Disposed	150833	Indirect
2021-09-13	Common Stock	S	534	$73.994	Disposed	150299	Indirect
2021-09-13	Common Stock	S	267	$74.688	Disposed	150032	Indirect
2021-09-14	Common Stock	S	4154	$73.324	Disposed	331864	Direct
2021-09-14	Common Stock	S	3241	$74.63	Disposed	328623	Direct
2021-09-14	Common Stock	S	1205	$75.561	Disposed	327418	Direct
2021-09-14	Common Stock	S	1400	$76.451	Disposed	326018	Direct
2021-09-14	Common Stock	S	781	$73.359	Disposed	139014	Indirect
2021-09-14	Common Stock	S	473	$74.647	Disposed	138541	Indirect
2021-09-14	Common Stock	S	227	$75.691	Disposed	138314	Indirect
2021-09-14	Common Stock	S	186	$76.425	Disposed	138128	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 $70.140 to $71.070, 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 $71.610 to $72.530, 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 $72.610 to $73.600, 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: This transaction was executed in multiple trades at prices ranging from $73.630 to $74.610, 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.

F6: This transaction was executed in multiple trades at prices ranging from $74.630 to $74.840, 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: 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.

F8: This transaction was executed in multiple trades at prices ranging from $70.280 to $70.745, 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: Held by DJM Grantor Retained Annuity Trust No. 1 of which the Reporting Person is the trustee and beneficiary.

F10: This transaction was executed in multiple trades at prices ranging from $71.300 to $71.895, 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.

F11: This transaction was executed in multiple trades at prices ranging from $72.530 to $73.290, 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.

F12: This transaction was executed in multiple trades at prices ranging from $74.645 to $74.735, 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.

F13: 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.

F14: Held by Derek Maetzold 2020 Irrevocable Trust of which the Reporting Person is the trustee and his children are beneficiaries.

F15: This transaction was executed in multiple trades at prices ranging from $72.970 to $73.940, 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.

F16: This transaction was executed in multiple trades at prices ranging from $74.010 to $75.000, 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.

F17: This transaction was executed in multiple trades at prices ranging from $75.020 to $75.995, 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.

F18: This transaction was executed in multiple trades at prices ranging from $76.220 to $76.640, 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.

F19: This transaction was executed in multiple trades at prices ranging from $73.050 to $73.940, 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.

F20: This transaction was executed in multiple trades at prices ranging from $74.100 to $75.070, 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.

F21: This transaction was executed in multiple trades at prices ranging from $75.105 to $76.070, 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.

F22: This transaction was executed in multiple trades at prices ranging from $76.300 to $76.630, 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.

F23: Transactions are continued on a Form 4 filed contemporaneously herewith.