CASTLE BIOSCIENCES INC — Director's Dealing 2021

Aug 6, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CASTLE BIOSCIENCES INC (CSTL)
CIK: 0001447362
Period of Report: 2021-08-03

Reporting Person: BRADBURY DANIEL (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-08-03	Common Stock	S	1400	$68.626	Disposed	279593	Indirect
2021-08-03	Common Stock	S	1100	$69.48	Disposed	278493	Indirect
2021-08-03	Common Stock	S	1250	$70.071	Disposed	151531	Indirect
2021-08-03	Common Stock	S	1250	$70.396	Disposed	151554	Indirect
2021-08-04	Common Stock	S	1000	$69.575	Disposed	277493	Indirect
2021-08-04	Common Stock	S	1100	$70.662	Disposed	276393	Indirect
2021-08-04	Common Stock	S	400	$71.418	Disposed	275993	Indirect
2021-08-04	Common Stock	S	1250	$69.137	Disposed	150281	Indirect
2021-08-04	Common Stock	S	1250	$69.078	Disposed	150304	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 $68.020 to $69.000, 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 $69.060 to $69.910, 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 $69.760 to $70.390, 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 Daniel Bradbury Irrecovable Descendant's Trust of which the reporting person and his spouse are trustees and their children are beneficiaries.

F7: This transaction was executed in multiple trades at prices ranging from $70.060 to $70.555, 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 Annette Bradbury Irrecovable Descendant's Trust of which the reporting person and his spouse are trustees and their children are beneficiaries.

F9: This transaction was executed in multiple trades at prices ranging from $69.200 to $70.050, 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 $70.230 to $71.160, 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 $71.270 to $71.590, 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 $68.640 to $69.490, 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 $68.780 to $69.400, 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.