Derek J Maetzold sold $289k of CSTL
Pres. & Chief Exec. Officer at CASTLE BIOSCIENCES INC. 9,373 shares at an average of $30.84, traded Nov 4, 2025, filed Nov 6, 2025.
Score components
- +25RoleCEO
- +14Trade size$289k at market
- +5Share of holdings soldSold 15% of holdings
- +15Cluster4 insiders selling within 14 days
- -2010b5-1 planPre-scheduled under a 10b5-1 plan
What happened after comparable sells
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
This signal so far: 1m +15.2%, 3m -3.4%, 6m -42.7%.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001628280-25-050169, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Nov 4, 2025 | SOpen-market sale Common Stock10b5-1 | -6,458 | $30.41 | $196k | 56,530 | Nov 6, 2025 |
| Nov 4, 2025 | SOpen-market sale Common Stock10b5-1 | -237 | $31.12 | $7,375 | 56,293 | Nov 6, 2025 |
| Nov 5, 2025 | SOpen-market sale Common Stock10b5-1 | -2,678 | $31.85 | $85k | 53,615 | Nov 6, 2025 |
Related signals
Other insiders at CASTLE BIOSCIENCES INC and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| Pro nowfree Oct 21, 2026 | CASTLE BIOSCIENCES INC | Tobin W Juvenal Chief Commercial Officer | $111k 3,288 shares | -6% | |
| 33Weak | CASTLE BIOSCIENCES INC | Derek J Maetzold Pres. & Chief Exec. Officer | $516k 14,496 shares | -49% | |
| 16Weak | CASTLE BIOSCIENCES INC | Kristen M Oelschlager Chief Operating Officer | $149k 4,153 shares | -24% | |
| 28Weak | CASTLE BIOSCIENCES INC | Tobin W Juvenal Chief Commercial Officer | $232k 6,577 shares | -11% | |
| 33Weak | CASTLE BIOSCIENCES INC | Derek J Maetzold Pres. & Chief Exec. Officer | $512k 14,496 shares | -48% | |
| 27Weak | CASTLE BIOSCIENCES INC | Tobin W Juvenal Chief Commercial Officer | $223k 6,600 shares | -10% | |
| 32Weak | CASTLE BIOSCIENCES INC | Derek J Maetzold Pres. & Chief Exec. Officer | $465k 14,518 shares | -48% | |
| 16Weak | CASTLE BIOSCIENCES INC | Kristen M Oelschlager Chief Operating Officer | $139k 4,152 shares | -24% | |
| 17Weak | CASTLE BIOSCIENCES INC | Tobin W Juvenal Chief Commercial Officer | $57k 1,730 shares | -3% | |
| 45Moderate | CASTLE BIOSCIENCES INC | Derek J Maetzold Pres. & Chief Exec. Officer | $616k 18,560 shares | -55% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.