Insider Shareholders with Direct Ownership of Castle Biosciences Inc (CSTL)
This section provides a comprehensive overview of the insiders with direct ownership of Castle Biosciences Inc (CSTL). You can find detailed information about the size and nature of each insider's ownership stake, as well as the latest updates on their holdings.
CASTLE BIOSCIENCES INC Insider List
| Insider | Adquired | Disposed | Held | # of Trades | Last Transaction |
|---|---|---|---|---|---|
|
Joseph C. Cook Iii
Director |
12,229 | 100,000 | 124,407 $4.16 Million | 9 |
Mar 18, 2021
Added 8.95%
|
|
Tobin W Juvenal
Chief Commercial Officer |
150,528 | 72,879 | 86,825 $2.9 Million | 37 |
Dec 11, 2025
Reduced 13.2%
|
|
Frank Stokes
Chief Financial Officer |
201,318 | 158,971 | 50,326 $1.68 Million | 49 |
Dec 11, 2025
Reduced 8.2%
|
|
Mara G. Aspinall
Director |
13,291 | 2,500 | 44,139 $1.48 Million | 4 |
May 23, 2024
Added 16.36%
|
|
Derek J Maetzold
Pres. & Chief Exec. Officer |
423,538 | 1,338,142 | 33,530 $1.12 Million | 230 |
Dec 22, 2025
Reduced 2.42%
|
|
Ellen Goldberg
Director |
27,254 | 0 | 27,254 $911,646 | 7 |
May 21, 2025
Added 24.14%
|
|
Tiffany Olson
Director |
25,906 | 0 | 25,906 $866,555 | 9 |
May 21, 2025
Added 25.08%
|
|
Kim Caple
Director |
22,454 | 0 | 22,454 $751,086 | 6 |
May 21, 2025
Added 27.86%
|
|
G Bradley Cole
Director |
21,964 | 0 | 21,964 $734,695 | 4 |
May 21, 2025
Added 28.31%
|
|
Miles Harrison
Director |
21,964 | 0 | 21,964 $734,695 | 4 |
May 21, 2025
Added 28.31%
|
|
Bernhard E. Spiess
Chief Business Officer |
25,890 | 64,756 | 14,696 $491,581 | 7 |
Dec 10, 2021
Reduced 2.43%
|
|
Rodney Cotton
Director |
14,002 | 0 | 14,002 $468,366 | 2 |
May 21, 2025
Added 38.25%
|
|
Kristen M Oelschlager
Chief Operating Officer |
141,139 | 143,586 | 12,323 $412,204 | 34 |
Dec 17, 2025
Reduced 54.71%
|
|
Daniel Bradbury
Director |
21,964 | 0 | 8,673 $290,111 | 4 |
May 21, 2025
Added 50.0%
|