CSTL- Castle Biosciences, Inc.

Name: Castle Biosciences, Inc. Insider Trading Data
Creator: U.S. Securities and Exchange Commission
License: https://www.sec.gov/privacy#accessibility

Castle Biosciences, Inc. (CSTL) has 11 insiders with recent SEC Form 4 filings, including 0 buys and 34 sells. CSTL is classified in the Life Sciences Tools & Services industry within the Health Care sector.

Insider Ownership

Role	Insider	Shares	Value	30d
Other	Maetzold Derek J	38.0K	$1.16M	-9,836
COO	Oelschlager Kristen M	18.9K	$575.1K	-8,586
Dir	Harrison Miles	11.8K	$358.5K	-
Dir	Goldberg Ellen	11.8K	$358.5K	-
Dir	Olson Tiffany	11.8K	$358.5K	-

Activity

Buys and sells only

Transactions

10 filings

Date	Insider	Role	Type	Shares	Price	Value	Chg%	3M	12M
Aug 3, 2026	Oelschlager Kristen M72	Chief Operating Officer	Sell	8,586	$29.77	$255,622.00	-15.6%	-	-
Jul 27, 2026	Maetzold Derek J69	Pres. &Chief Exec. Officer	Sale+OE	9,836	$24.16	$237,682.13	-3.4%	-	-
Jun 15, 2026	Maetzold Derek J69	Pres. &Chief Exec. Officer	Sale+OE	4,172	$20.66	$86,193.52	-2.7%	-	-
Jan 6, 2026	Maetzold Derek J69	Pres. &Chief Exec. Officer	Sell	4,017	$38.76	$155,693.56	-6.2%	-38.3%	-
Dec 22, 2025	Maetzold Derek J69	Pres. &Chief Exec. Officer	Sell	830	$40.35	$33,490.50	-2.4%	-37.8%	-
Dec 17, 2025	Oelschlager Kristen M72	Chief Operating Officer	Sell	14,888	$39.31	$585,291.94	-54.7%	-34.7%	-
Dec 17, 2025	Maetzold Derek J69	Pres. &Chief Exec. Officer	Sell	509	$40.04	$20,380.36	-1.5%	-34.7%	-
Dec 16, 2025	Maetzold Derek J69	Pres. &Chief Exec. Officer	Sell	32,346	$38.69	$1,251,399.69	-19.8%	-33.9%	-
Dec 11, 2025	Juvenal Tobin W71	Chief Commercial Officer	Sell	13,200	$37.48	$494,736.00	-13.2%	-31.2%	-
Dec 11, 2025	Stokes Frank70	Chief Financial Officer	Sell	4,496	$37.45	$168,375.20	-8.2%	-31.2%	-

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Insider	Role	Shares	Value	Buys	Sells

Date	Ticker	Insider	Role	Type	Shares	Price	Value	Chg%	SEC