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CSTL Exercise Disclosure
Maetzold Derek J · SEC Form 4 · Filed Aug 4, 2026
Exercise
Calculated transaction value
$15.49K
Maetzold Derek J Pres. & Chief Exec. Officer
CSTL
Castle Biosciences
CSTL
Transaction date
Jul 31, 2026
Public filing date
Aug 4, 2026
Filing lag
Filed 4 days later
CSTL daily price context
Close on/before transaction
$28
Jul 31, 2026
First close after public filing
$30.4
Aug 5, 2026
30-day return after filing
+7.4%
Through Sep 3, 2026
Source details
- Reported owner
- Not disclosed
- Source asset code
- Security
- Security
- Common Stock
- Quantity / price
- 6,480 shares @ $2.39
- SEC ownership
- Direct
- Transaction code
- M
- Form
- 4
- Filing identifier
- 0001628280-26-052647
Filing cohort
Transactions in this filing
Showing 10 of 10
Trades
10
Issuers
1
Estimated value
$908.43K
Buys / sales
0 / 6
| Issuer | Transaction | Traded | Value |
|---|---|---|---|
| Castle Biosciences Inc CSTL | Exercise | Aug 3, 2026 | $25.49K |
| Castle Biosciences Inc CSTL | Sale | Aug 3, 2026 | $323.68K |
| Castle Biosciences Inc CSTL | Sale | Aug 3, 2026 | $128.45K |
| Castle Biosciences Inc CSTL | Sale | Aug 3, 2026 | $109.18K |
| Castle Biosciences Inc CSTL | Exercise | Aug 3, 2026 | $0 |
| Castle Biosciences Inc CSTL | Sale | Jul 31, 2026 | $50.96K |
| Castle Biosciences Inc CSTL | Exercise | Jul 31, 2026 | $0 |
| Castle Biosciences Inc CSTL | Sale | Jul 31, 2026 | $195.38K |
| Castle Biosciences Inc CSTL | Sale | Jul 31, 2026 | $59.79K |
| Castle Biosciences Inc CSTL Current | Exercise | Jul 31, 2026 | $15.49K |