CASTLE BIOSCIENCES INC (CSTL) has 19 SEC Form 4 insider filings on record in the last 90 days. No insider purchases were filed — 18 sales totalling $7.4M. Most recent filing: Sept. 16, 2026.
| Date | Insider | Value | Shares | Stake | Pre-planned | Links |
|---|---|---|---|---|---|---|
| Sept. 16, 2026 filed Sept. 14, 2026 | Juvenal Tobin W Chief Commercial Officer | −$222,621 | 6,600 | −10% | Yes | |
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| Sept. 15, 2026 filed Sept. 11, 2026 | MAETZOLD DEREK J Pres. & Chief Exec. Officer | −$190,008 | 31,686 | −26% | Yes | |
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| Sept. 3, 2026 filed Sept. 1, 2026 | Oelschlager Kristen M Chief Operating Officer | $124,609 | 12,456 | 0% | Yes | |
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| Sept. 2, 2026 filed Aug. 31, 2026 | Juvenal Tobin W Chief Commercial Officer | −$56,761 | 1,730 | −3% | Yes | |
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| Sept. 1, 2026 filed Aug. 28, 2026 | MAETZOLD DEREK J Pres. & Chief Exec. Officer | −$203,563 | 43,416 | −19% | Yes | |
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Showing the 5 most recent of 19 filings in the last 90 days.
Form 4 is the filing company officers, directors and 10% shareholders must submit to the SEC within two business days of trading their own company's stock. Open-market purchases generally carry more signal than sales, which are often scheduled in advance. More on how this works.
Real-time Telegram alerts the moment a Form 4 is filed. Filings shown here are delayed by 72 hours.
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