CASTLE BIOSCIENCES INC — Director's Dealing 2021

Nov 12, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CASTLE BIOSCIENCES INC (CSTL)
CIK: 0001447362
Period of Report: 2021-11-09

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-11-09	Common Stock	S	433	$55.404	Disposed	128528	Indirect
2021-11-09	Common Stock	S	133	$56.665	Disposed	128395	Indirect
2021-11-09	Common Stock	S	67	$57.542	Disposed	128328	Indirect
2021-11-09	Common Stock	S	200	$59.094	Disposed	128128	Indirect
2021-11-09	Common Stock	S	433	$55.404	Disposed	151367	Indirect
2021-11-09	Common Stock	S	133	$56.665	Disposed	151234	Indirect
2021-11-09	Common Stock	S	67	$57.542	Disposed	151167	Indirect
2021-11-09	Common Stock	S	200	$59.094	Disposed	150967	Indirect
2021-11-09	Common Stock	S	434	$55.404	Disposed	138765	Indirect
2021-11-09	Common Stock	S	134	$56.665	Disposed	138631	Indirect
2021-11-09	Common Stock	S	66	$57.542	Disposed	138565	Indirect
2021-11-09	Common Stock	S	200	$59.094	Disposed	138365	Indirect
2021-11-10	Common Stock	S	134	$55.593	Disposed	127994	Indirect
2021-11-10	Common Stock	S	233	$56.517	Disposed	127761	Indirect
2021-11-10	Common Stock	S	33	$57.26	Disposed	127728	Indirect
2021-11-10	Common Stock	S	133	$55.593	Disposed	150834	Indirect
2021-11-10	Common Stock	S	234	$56.517	Disposed	150600	Indirect
2021-11-10	Common Stock	S	33	$57.26	Disposed	150567	Indirect
2021-11-10	Common Stock	S	133	$55.593	Disposed	138232	Indirect
2021-11-10	Common Stock	S	233	$56.517	Disposed	137999	Indirect
2021-11-10	Common Stock	S	34	$57.26	Disposed	137965	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	286018	Direct

Footnotes

F1: 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.

F2: This transaction was executed in multiple trades at prices ranging from $55.020 to $55.880, 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.

F3: Held by DJM Grantor Retained Annuity Trust No. 1 of which the Reporting Person is the trustee and beneficiary.

F4: This transaction was executed in multiple trades at prices ranging from $56.080 to $56.970, 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.

F5: This transaction was executed in multiple trades at prices ranging from $57.255 to $57.860, 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 $58.540 to $59.375, 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 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 $55.060 to $55.950, 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.

F10: This transaction was executed in multiple trades at prices ranging from $56.180 to $57.020, 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.