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CASTLE BIOSCIENCES INC

CASTLE BIOSCIENCES INCCSTLEarnings & Financial Report

Nasdaq · Health Care · Services-Medical Laboratories

Castle Biosciences Inc. is a commercial-stage diagnostic firm that develops and markets proprietary, clinically actionable tests for dermatological conditions such as melanoma and other skin cancers, plus rare diseases. It operates mainly in the U.S. healthcare market, focusing on segments with high unmet need for more accurate diagnostics to guide treatment choices.

Top Holders

Holder% OwnedSharesChangeAs of
BlackRock, Inc.11.00%
3.0M
▲ +2.50pp2024-07-08
Wasatch Advisors LP6.60%
—
▼ -3.00pp2024-11-13
The Vanguard Group5.43%
1.5M
—2024-02-13
S.S. OR1.53%
425.2K
▼ -6.52pp2024-11-14
Principal Global Investors, LLC—
1.6M
—2024-02-13

Insider Transactions

Net 90d: −$4.14M · buys $0 / sells $4.14M
Range:
Action:
Role:
InsiderRoleAction
2026-04-21MAETZOLD DEREK JPres. & Chief Exec. OfficerOption exercise
550
$2.39$1.3K
2026-04-21MAETZOLD DEREK JPres. & Chief Exec. OfficerSell (open market)
550
$25.10$13.8K
2026-04-21MAETZOLD DEREK JPres. & Chief Exec. OfficerSell (open market)
1.4K
$25.10$34.1K
2026-04-21MAETZOLD DEREK JPres. & Chief Exec. OfficerSell (open market)
1.2K
$25.10$28.9K
2026-04-21MAETZOLD DEREK JPres. & Chief Exec. OfficerSell (open market)
278
$25.10$7.0K
2026-04-21MAETZOLD DEREK JPres. & Chief Exec. OfficerSell (open market)
278
$25.10$7.0K
2026-04-21MAETZOLD DEREK JPres. & Chief Exec. OfficerSell (open market)
278
$25.10$7.0K
2026-04-21MAETZOLD DEREK JPres. & Chief Exec. OfficerSell (open market)
278
$25.10$7.0K
2026-04-06MAETZOLD DEREK JPres. & Chief Exec. OfficerOption exercise
6.2K
$2.39$14.9K
2026-04-06MAETZOLD DEREK JPres. & Chief Exec. OfficerSell (open market)
6.2K
$25.03$155.5K
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