CSTL Derek J Maetzold sells $469K worth of shares
Mar 18, 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 17,575 shares of CSTL on 16 March at $26.68 per share, worth a total of $469K. They now own 40,905 CSTL shares, or a 30% holding decrease.
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