CASTLE BIOSCIENCES INC — Director's Dealing 2021

Oct 6, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CASTLE BIOSCIENCES INC (CSTL)
CIK: 0001447362
Period of Report: 2021-10-04

Reporting Person: BRADBURY DANIEL (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-10-04	Common Stock	S	2500	$60.233	Disposed	258493	Indirect
2021-10-04	Common Stock	S	1250	$60.745	Disposed	141531	Indirect
2021-10-04	Common Stock	S	450	$61.893	Disposed	142354	Indirect
2021-10-04	Common Stock	S	600	$62.60	Disposed	141754	Indirect
2021-10-04	Common Stock	S	200	$63.525	Disposed	141554	Indirect
2021-10-05	Common Stock	S	1685	$62.042	Disposed	256808	Indirect
2021-10-05	Common Stock	S	815	$62.526	Disposed	255993	Indirect
2021-10-05	Common Stock	S	1250	$62.829	Disposed	140281	Indirect
2021-10-05	Common Stock	S	1250	$62.943	Disposed	140304	Indirect

Footnotes

F1: The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted collectively by BioBrit, LLC (the "LLC"), The Annette E. Bradbury Irrevocable Descendants' Trust, and The Daniel M. Bradbury Irrevocable Descendants' Trust on May 26, 2021.

F2: This transaction was executed in multiple trades at prices ranging from $60.025 to $60.520, 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 the LLC, of which the Reporting Person is the managing member and has voting and investment power over the shares.

F4: This transaction was executed in multiple trades at prices ranging from $60.550 to $61.270, 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: Held by Daniel Bradbury Irrecovable Descendant's Trust of which the reporting person and his spouse are trustees and their children are beneficiaries.

F6: This transaction was executed in multiple trades at prices ranging from $61.270 to $62.230, 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 Annette Bradbury Irrecovable Descendant's Trust of which the reporting person and his spouse are trustees and their children are beneficiaries.

F8: This transaction was executed in multiple trades at prices ranging from $62.280 to $62.850, 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: This transaction was executed in multiple trades at prices ranging from $63.350 to $63.700, 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 $61.430 to $62.350, 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 $62.430 to $62.690, 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 $62.690 to $62.895, 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.

F13: This transaction was executed in multiple trades at prices ranging from $62.895 to $63.090, 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.