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CSTL Exercise Disclosure
Maetzold Derek J · SEC Form 4 · Filed Sep 15, 2026
Exercise
Calculated transaction value
$20.52K
Maetzold Derek J Pres. & Chief Exec. Officer
CSTL
Castle Biosciences
CSTL
Transaction date
Sep 11, 2026
Public filing date
Sep 15, 2026
Filing lag
Filed 4 days later
CSTL daily price context
Close on/before transaction
$32.33
Sep 11, 2026
First close after public filing
$35.48
Sep 16, 2026
30-day return after filing
-4.74%
Through Oct 15, 2026
Source details
- Reported owner
- Not disclosed
- Source asset code
- Security
- Security
- Common Stock
- Quantity / price
- 8,584 shares @ $2.39
- SEC ownership
- Direct
- Transaction code
- M
- Form
- 4
- Filing identifier
- 0001628280-26-062047
Filing cohort
Transactions in this filing
Showing 8 of 8
Trades
8
Issuers
1
Estimated value
$485.39K
Buys / sales
0 / 6
| Issuer | Transaction | Traded | Value |
|---|---|---|---|
| Castle Biosciences Inc CSTL Current | Exercise | Sep 11, 2026 | $20.52K |
| Castle Biosciences Inc CSTL | Sale | Sep 11, 2026 | $267.55K |
| Castle Biosciences Inc CSTL | Sale | Sep 11, 2026 | $99.97K |
| Castle Biosciences Inc CSTL | Sale | Sep 11, 2026 | $84.99K |
| Castle Biosciences Inc CSTL | Sale | Sep 11, 2026 | $7.31K |
| Castle Biosciences Inc CSTL | Sale | Sep 11, 2026 | $2.72K |
| Castle Biosciences Inc CSTL | Sale | Sep 11, 2026 | $2.33K |
| Castle Biosciences Inc CSTL | Exercise | Sep 11, 2026 | $0 |