• Castle Biosciences will begin a secondary listing on Nasdaq Texas today under ticker CSTL.
• Primary listing remains on the Nasdaq Global Market.
• Dual listing is not expected to change trading access, business operations, reporting obligations, or capital structure.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Castle Biosciences Inc. published the original content used to generate this news brief via PR Newswire (Ref. ID: 202608170700PR_NEWS_USPR_____DA26770) on August 17, 2026, and is solely responsible for the information contained therein.