CASTLE BIOSCIENCES INC — Director's Dealing 2021

Jul 21, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CASTLE BIOSCIENCES INC (CSTL)
CIK: 0001447362
Period of Report: 2021-07-19

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-07-19	Common Stock	S	9430	$64.587	Disposed	426588	Direct
2021-07-19	Common Stock	S	570	$65.11	Disposed	426018	Direct
2021-07-19	Common Stock	S	833	$64.594	Disposed	155627	Indirect
2021-07-19	Common Stock	S	833	$64.594	Disposed	178467	Indirect
2021-07-19	Common Stock	S	834	$64.594	Disposed	165866	Indirect
2021-07-20	Common Stock	S	5517	$65.565	Disposed	420501	Direct
2021-07-20	Common Stock	S	4283	$66.45	Disposed	416218	Direct
2021-07-20	Common Stock	S	200	$67.025	Disposed	416018	Direct
2021-07-20	Common Stock	S	522	$65.632	Disposed	155105	Indirect
2021-07-20	Common Stock	S	312	$66.638	Disposed	154793	Indirect
2021-07-20	Common Stock	S	522	$65.632	Disposed	177945	Indirect
2021-07-20	Common Stock	S	311	$66.638	Disposed	177634	Indirect
2021-07-20	Common Stock	S	521	$65.632	Disposed	165345	Indirect
2021-07-20	Common Stock	S	312	$66.638	Disposed	165033	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 $63.970 to $64.950, 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 $64.985 to $65.290, 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.

F4: 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.

F5: This transaction was executed in multiple trades at prices ranging from $64.110 to $64.990, 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: Held by DJM Grantor Retained Annuity Trust No. 1 of which the Reporting Person is the trustee and beneficiary.

F7: 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.

F8: Held by Derek Maetzold 2020 Irrevocable Trust of which the Reporting Person is the trustee and his children are beneficiaries.

F9: This transaction was executed in multiple trades at prices ranging from $64.950 to $65.940, 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.

F10: This transaction was executed in multiple trades at prices ranging from $65.970 to $66.960, 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 $67.010 to $67.040, 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 $65.120 to $66.040, 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: This transaction was executed in multiple trades at prices ranging from $66.150 to $67.060, 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.