CASTLE BIOSCIENCES INC — Director's Dealing 2021

Sep 10, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CASTLE BIOSCIENCES INC (CSTL)
CIK: 0001447362
Period of Report: 2021-09-08

Reporting Person: BRADBURY DANIEL (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-09-08	Common Stock	S	1380	$75.879	Disposed	269613	Indirect
2021-09-08	Common Stock	S	1120	$76.709	Disposed	268493	Indirect
2021-09-08	Common Stock	S	1250	$76.892	Disposed	146531	Indirect
2021-09-08	Common Stock	S	1250	$76.472	Disposed	146554	Indirect
2021-09-09	Common Stock	S	1400	$76.401	Disposed	267093	Indirect
2021-09-09	Common Stock	S	1100	$77.419	Disposed	265993	Indirect
2021-09-09	Common Stock	S	1250	$76.695	Disposed	145281	Indirect
2021-09-09	Common Stock	S	1250	$76.14	Disposed	145304	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 $75.280 to $76.270, 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.

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 $76.280 to $77.000, 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.

F5: This transaction was executed in multiple trades at prices ranging from $76.590 to $77.340, 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 $76.310 to $76.590, 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.

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 $76.010 to $76.970, 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.

F10: This transaction was executed in multiple trades at prices ranging from $77.090 to $77.975, 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 $76.430 to $77.085, 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 $75.740 to $76.580, 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.