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CSTL Sale Disclosure
Maetzold Derek J · SEC Form 4 · Filed Aug 18, 2026
Sale
Calculated transaction value
$8.35K
Maetzold Derek J Pres. & Chief Exec. Officer
CSTL
Castle Biosciences
CSTL
Transaction date
Aug 14, 2026
Public filing date
Aug 18, 2026
Filing lag
Filed 4 days later
CSTL daily price context
Close on/before transaction
$29.62
Aug 14, 2026
First close after public filing
$32.32
Aug 19, 2026
30-day return after filing
+13.8%
Through Sep 17, 2026
Source details
- Reported owner
- Not disclosed
- Source asset code
- Security
- Security
- Common Stock
- Quantity / price
- 278 shares @ $30.02
- SEC ownership
- Indirect
- Transaction code
- S
- Form
- 4
- Filing identifier
- 0001628280-26-057642
Filing cohort
Transactions in this filing
Showing 9 of 9
Trades
9
Issuers
1
Estimated value
$219.73K
Buys / sales
0 / 7
| Issuer | Transaction | Traded | Value |
|---|---|---|---|
| Castle Biosciences Inc CSTL | Sale | Aug 14, 2026 | $33.02K |
| Castle Biosciences Inc CSTL | Sale | Aug 14, 2026 | $81.47K |
| Castle Biosciences Inc CSTL Current | Sale | Aug 14, 2026 | $8.35K |
| Castle Biosciences Inc CSTL | Sale | Aug 14, 2026 | $8.35K |
| Castle Biosciences Inc CSTL | Sale | Aug 14, 2026 | $8.35K |
| Castle Biosciences Inc CSTL | Sale | Aug 14, 2026 | $8.35K |
| Castle Biosciences Inc CSTL | Exercise | Aug 14, 2026 | $2.63K |
| Castle Biosciences Inc CSTL | Sale | Aug 14, 2026 | $69.23K |
| Castle Biosciences Inc CSTL | Exercise | Aug 14, 2026 | $0 |