CASTLE BIOSCIENCES INC — Director's Dealing 2021

Sep 30, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CASTLE BIOSCIENCES INC (CSTL)
CIK: 0001447362
Period of Report: 2021-09-28

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-09-28	Common Stock	S	3115	$66.04	Disposed	312903	Direct
2021-09-28	Common Stock	S	5760	$67.13	Disposed	307143	Direct
2021-09-28	Common Stock	S	1000	$67.84	Disposed	306143	Direct
2021-09-28	Common Stock	S	125	$68.69	Disposed	306018	Direct
2021-09-28	Common Stock	S	266	$66.01	Disposed	136195	Indirect
2021-09-28	Common Stock	S	534	$67.23	Disposed	135661	Indirect
2021-09-28	Common Stock	S	33	$68.26	Disposed	135628	Indirect
2021-09-28	Common Stock	S	267	$66.01	Disposed	159033	Indirect
2021-09-28	Common Stock	S	533	$67.23	Disposed	158500	Indirect
2021-09-28	Common Stock	S	33	$68.26	Disposed	158467	Indirect
2021-09-28	Common Stock	S	267	$66.01	Disposed	146432	Indirect
2021-09-28	Common Stock	S	533	$67.23	Disposed	145899	Indirect
2021-09-28	Common Stock	S	34	$68.26	Disposed	145865	Indirect
2021-09-29	Common Stock	S	6072	$64.88	Disposed	299946	Direct
2021-09-29	Common Stock	S	2326	$65.85	Disposed	297620	Direct
2021-09-29	Common Stock	S	1571	$66.87	Disposed	296049	Direct
2021-09-29	Common Stock	S	31	$67.42	Disposed	296018	Direct
2021-09-29	Common Stock	S	500	$64.89	Disposed	135128	Indirect
2021-09-29	Common Stock	S	234	$65.92	Disposed	134894	Indirect
2021-09-29	Common Stock	S	100	$66.92	Disposed	134794	Indirect
2021-09-29	Common Stock	S	500	$64.89	Disposed	157967	Indirect
2021-09-29	Common Stock	S	233	$65.92	Disposed	157734	Indirect
2021-09-29	Common Stock	S	100	$66.92	Disposed	157634	Indirect
2021-09-29	Common Stock	S	500	$64.89	Disposed	145365	Indirect
2021-09-29	Common Stock	S	233	$65.92	Disposed	145132	Indirect
2021-09-29	Common Stock	S	100	$66.92	Disposed	145032	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 $65.63 to $66.60, 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 $66.65 to $67.59, 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 $67.65 to $68.16, 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 $68.69 to $68.71, 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: 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.

F7: This transaction was executed in multiple trades at prices ranging from $65.62 to $66.45, 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: Held by DJM Grantor Retained Annuity Trust No. 1 of which the Reporting Person is the trustee and beneficiary.

F9: This transaction was executed in multiple trades at prices ranging from $66.77 to $67.73, 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.

F12: This transaction was executed in multiple trades at prices ranging from $64.37 to $65.36, 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 $65.37 to $66.36, 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.

F14: This transaction was executed in multiple trades at prices ranging from $66.39 to $67.37, 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.

F15: This transaction was executed in multiple trades at prices ranging from $64.40 to $65.34, 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 $65.43 to $66.39, 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 $66.51 to $67.19, 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.