CSTL Derek J Maetzold sells $484K worth of shares
Mar 20, 2026, 4:35 AM
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What does CSTL do
Castle Biosciences, headquartered in Friendswood, Texas, is a dermatological cancer company that provides genomic tests for skin cancers and mental health conditions. The firm went public in July 2019 and employs 610 people.
Derek J Maetzold sold 18,650 shares of CSTL on 17 March at $25.93 per share, worth a total of $484K. They now own 22,129 CSTL shares, or a 46% holding decrease.
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