MAETZOLD DEREK J — Pres. & Chief Exec. Officer
Insider trading activity for MAETZOLD DEREK J sourced from SEC EDGAR Form 4 filings.
Overview
- Title: Pres. & Chief Exec. Officer
- Company: CASTLE BIOSCIENCES INC
- Total insider trades: 110
- Total buy volume: $30K
- Total sell volume: $3.2M
- Last trade: Sep 23, 2026
Recent Trades
| Date | Insider | Ticker / Company |
Type | Shares | Value |
| Sep 21, 2026 |
MAETZOLD DEREK J |
CSTL CASTLE BIOSCIENCES INC |
OTHER |
8,580 |
N/A |
| Sep 21, 2026 |
MAETZOLD DEREK J |
CSTL CASTLE BIOSCIENCES INC |
SELL |
2,718 |
$96K |
| Sep 21, 2026 |
MAETZOLD DEREK J |
CSTL CASTLE BIOSCIENCES INC |
SELL |
3,198 |
$113K |
| Sep 21, 2026 |
MAETZOLD DEREK J |
CSTL CASTLE BIOSCIENCES INC |
SELL |
8,580 |
$303K |
| Sep 21, 2026 |
MAETZOLD DEREK J |
CSTL CASTLE BIOSCIENCES INC |
OTHER |
8,580 |
$21K |
| Sep 11, 2026 |
MAETZOLD DEREK J |
CSTL CASTLE BIOSCIENCES INC |
OTHER |
8,584 |
N/A |
| Sep 11, 2026 |
MAETZOLD DEREK J |
CSTL CASTLE BIOSCIENCES INC |
SELL |
71 |
$2K |
| Sep 11, 2026 |
MAETZOLD DEREK J |
CSTL CASTLE BIOSCIENCES INC |
SELL |
83 |
$3K |
| Sep 11, 2026 |
MAETZOLD DEREK J |
CSTL CASTLE BIOSCIENCES INC |
SELL |
223 |
$7K |
| Sep 11, 2026 |
MAETZOLD DEREK J |
CSTL CASTLE BIOSCIENCES INC |
SELL |
2,656 |
$85K |
| Sep 11, 2026 |
MAETZOLD DEREK J |
CSTL CASTLE BIOSCIENCES INC |
SELL |
3,124 |
$100K |
| Sep 11, 2026 |
MAETZOLD DEREK J |
CSTL CASTLE BIOSCIENCES INC |
SELL |
8,361 |
$268K |
| Sep 11, 2026 |
MAETZOLD DEREK J |
CSTL CASTLE BIOSCIENCES INC |
OTHER |
8,584 |
$21K |
| Aug 28, 2026 |
MAETZOLD DEREK J |
CCSTL CASTLE BIOSCIENCES INC |
SELL |
12,428 |
$413K |
| Aug 28, 2026 |
MAETZOLD DEREK J |
CCSTL CASTLE BIOSCIENCES INC |
BUY |
12,428 |
$30K |
| Aug 14, 2026 |
MAETZOLD DEREK J |
CSTL CASTLE BIOSCIENCES INC |
OTHER |
1,100 |
N/A |
| Aug 14, 2026 |
MAETZOLD DEREK J |
CSTL CASTLE BIOSCIENCES INC |
SELL |
1,100 |
$33K |
| Aug 14, 2026 |
MAETZOLD DEREK J |
CSTL CASTLE BIOSCIENCES INC |
OTHER |
1,100 |
$3K |
| Jul 1, 2026 |
MAETZOLD DEREK J |
CSTL CASTLE BIOSCIENCES INC |
OTHER |
6,214 |
N/A |
| Jul 1, 2026 |
MAETZOLD DEREK J |
CSTL CASTLE BIOSCIENCES INC |
SELL |
278 |
$7K |
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