CSTL
CASTLE BIOSCIENCES INC
CASTLE BIOSCIENCES INC (CSTL) has 31 SEC Form 4 filings (149 transaction rows) in the rolling window, disclosed by 5 distinct insiders. Most recent filing: Jul 29, 2026.
The most active filer is Pres. & Chief Exec. Officer MAETZOLD DEREK J with 17 filings. Insiders have net sold $5.3M over the trailing 6 months.
- Industry:Medical - Diagnostics & Research
- CEO:Derek J. Maetzold
- Employees:784
- HQ:Friendswood, TX, US
- IPO:2019-07-25
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$5.3M
reported sales (SEC code S)
Unique Insiders
5
in the rolling window
Market Cap
$849.2M
latest known value
| Source | ||||||
|---|---|---|---|---|---|---|
| Pres. & Chief Exec. Officer | Sale | 9,002 | $218K | Jul 29 | SEC ↗ | |
| Pres. & Chief Exec. Officer | Sale | 3,338 | $77K | Jul 16 | SEC ↗ | |
| Pres. & Chief Exec. Officer | Sale | 9,002 | $219K | Jul 6 | SEC ↗ | |
| Chief Operating Officer | Sale | 8,586 | $210K | Jul 6 | SEC ↗ | |
Oelschlager Kristen MFirst filing | Chief Operating Officer | Sale | 8,587 | $178K | Jun 18 | SEC ↗ |
| Pres. & Chief Exec. Officer | Sale | 3,338 | $69K | Jun 17 | SEC ↗ | |
| Pres. & Chief Exec. Officer | Sale | 9,002 | $188K | Jun 3 | SEC ↗ | |
| Pres. & Chief Exec. Officer | Sale | 791 | $16K | May 22 | SEC ↗ | |
| Pres. & Chief Exec. Officer | Sale | 2,547 | $51K | May 22 | SEC ↗ | |
| Pres. & Chief Exec. Officer | Sale | 9,002 | $199K | May 11 | SEC ↗ | |
| Pres. & Chief Exec. Officer | Sale | 3,338 | $84K | Apr 23 | SEC ↗ | |
| Pres. & Chief Exec. Officer | Sale | 9,002 | $225K | Apr 8 | SEC ↗ | |
| Pres. & Chief Exec. Officer | Sale | 3,338 | $85K | Mar 30 | SEC ↗ | |
| Pres. & Chief Exec. Officer | Sale | 18,650 | $484K | Mar 19 | SEC ↗ | |
| Pres. & Chief Exec. Officer | Sale | 650 | $17K | Mar 19 | SEC ↗ | |
| Pres. & Chief Exec. Officer | Sale | 13,204 | $336K | Mar 17 | SEC ↗ | |
| Pres. & Chief Exec. Officer | Sale | 17,575 | $456K | Mar 17 | SEC ↗ | |
Juvenal Tobin WFirst filing | Chief Commercial Officer | Sale | 20,863 | $527K | Mar 16 | SEC ↗ |
MAETZOLD DEREK JFirst filing | Pres. & Chief Exec. Officer | Sale | 20,388 | $532K | Mar 13 | SEC ↗ |
MAETZOLD DEREK JFirst filing | Pres. & Chief Exec. Officer | Sale | 23,179 | $586K | Mar 13 | SEC ↗ |
Cole G BradleyFirst filing | Director | Sale | 7,403 | $211K | Mar 9 | SEC ↗ |
| Chief Financial Officer | Sale | 6,001 | $168K | Mar 9 | SEC ↗ | |
Stokes FrankFirst filing | Chief Financial Officer | Sale | 7,000 | $192K | Mar 5 | SEC ↗ |
Related companies
CASTLE BIOSCIENCES INC is in the Healthcare sector.