CASTLE BIOSCIENCES INC

Ticker: CSTL CUSIP: 14843C105 Class: Common Stock

Select Equity Group, L.P.'s Holding History (CIK: 0001592643)

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

Q1 2021

Shares 360,085 Value ($000) $24,651,419 Avg Close $75.16 Range $56.74 - $107.69

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2021	360,085	$24,651,419	$75.16	$56.74 - $107.69