CASTLE BIOSCIENCES INC

Ticker: CSTL CUSIP: 14843C105 Class: Common Stock

Matrix Capital Management Company, LP's Holding History (CIK: 0001410830)

Note: Option positions (PUT/CALL) are excluded.

Q1 2021

Shares 1,000,000 Value ($000) $68,460 Avg Close $75.16 Range $56.74 - $107.69

Q4 2020

Shares 1,000,000 Value ($000) $67,150 Avg Close $54.21 Range $43.37 - $78.39

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2021	1,000,000	$68,460	$75.16	$56.74 - $107.69
Q4 2020	1,000,000	$67,150	$54.21	$43.37 - $78.39