CASTLE BIOSCIENCES INC — Director's Dealing 2021

Mar 12, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CASTLE BIOSCIENCES INC (CSTL)
CIK: 0001447362
Period of Report: 2021-03-10

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-03-10	Common Stock	S	3185	$63.264	Disposed	735325	Direct
2021-03-10	Common Stock	S	1815	$64.32	Disposed	733510	Direct
2021-03-10	Common Stock	S	5690	$65.601	Disposed	727820	Direct
2021-03-10	Common Stock	S	3685	$66.217	Disposed	724135	Direct
2021-03-11	Common Stock	S	4181	$66.955	Disposed	719954	Direct
2021-03-11	Common Stock	S	9394	$67.779	Disposed	710560	Direct
2021-03-11	Common Stock	S	800	$68.548	Disposed	709760	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	156460	Indirect
Common Stock	179300	Indirect
Common Stock	166700	Indirect

Footnotes

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

F2: This transaction was executed in multiple trades at prices ranging from $62.800 to $63.760, 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 $63.880 to $64.870, 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 $64.920 to $65.900, 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 $65.930 to $66.820, 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 $66.280 to $67.235, 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: This transaction was executed in multiple trades at prices ranging from $67.280 to $68.240, 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.

F8: This transaction was executed in multiple trades at prices ranging from $68.290 to $68.880, 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: 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.