CSTL Exercise Disclosure
Maetzold Derek J · SEC Form 4 · Filed Oct 7, 2026
Exercise
Calculated transaction value
$19.51K
Maetzold Derek J Pres. & Chief Exec. Officer
CSTL
Castle Biosciences
CSTL
Transaction date
Oct 5, 2026
Public filing date
Oct 7, 2026
Filing lag
Filed 2 days later
CSTL daily price context
Close on/before transaction
$36.65
Oct 5, 2026
First close after public filing
$33.71
Oct 8, 2026
Return after filing · so far
+2.11%
Through Oct 9, 2026
Source details
- Reported owner
- Not disclosed
- Source asset code
- Security
- Security
- Common Stock
- Quantity / price
- 8,165 shares @ $2.39
- SEC ownership
- Direct
- Transaction code
- M
- Form
- 4
- Filing identifier
- 0001628280-26-065327
Filing cohort
Transactions in this filing
Showing 5 of 5
Trades
5
Issuers
1
Estimated value
$535.08K
Buys / sales
0 / 3
| Issuer | Transaction | Traded | Value |
|---|---|---|---|
| Castle Biosciences Inc CSTL Current | Exercise | Oct 5, 2026 | $19.51K |
| Castle Biosciences Inc CSTL | Sale | Oct 5, 2026 | $305.16K |
| Castle Biosciences Inc CSTL | Sale | Oct 5, 2026 | $113.74K |
| Castle Biosciences Inc CSTL | Sale | Oct 5, 2026 | $96.67K |
| Castle Biosciences Inc CSTL | Exercise | Oct 5, 2026 | $0 |