Insider Transactions in Q4 2025 at Castle Biosciences Inc (CSTL)
Insider Transaction List (Q4 2025)
| Date | Insider | Transaction | Ownership Type | Shares Traded | Value / Price |
|---|---|---|---|---|---|
|
Dec 22
2025
|
Derek J Maetzold Pres. & Chief Exec. Officer |
SELL
Open market or private sale
|
Direct |
830
-2.42%
|
$33,200
$40.35 P/Share
|
|
Dec 17
2025
|
Kristen M Oelschlager Chief Operating Officer |
SELL
Open market or private sale
|
Direct |
14,888
-54.71%
|
$580,632
$39.31 P/Share
|
|
Dec 17
2025
|
Derek J Maetzold Pres. & Chief Exec. Officer |
SELL
Open market or private sale
|
Direct |
509
-1.46%
|
$20,360
$40.04 P/Share
|
|
Dec 16
2025
|
Derek J Maetzold Pres. & Chief Exec. Officer |
SELL
Open market or private sale
|
Direct |
12,821
-26.88%
|
$487,198
$38.55 P/Share
|
|
Dec 15
2025
|
Derek J Maetzold Pres. & Chief Exec. Officer |
SELL
Open market or private sale
|
Direct |
19,525
-14.81%
|
$761,475
$39.03 P/Share
|
|
Dec 11
2025
|
Tobin W Juvenal Chief Commercial Officer |
SELL
Open market or private sale
|
Direct |
13,200
-13.2%
|
$488,400
$37.48 P/Share
|
|
Dec 11
2025
|
Frank Stokes Chief Financial Officer |
SELL
Open market or private sale
|
Direct |
4,496
-8.2%
|
$166,352
$37.45 P/Share
|
|
Dec 10
2025
|
Frank Stokes Chief Financial Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
2,758
-4.79%
|
$104,804
$38.02 P/Share
|
|
Dec 10
2025
|
Frank Stokes Chief Financial Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
6,170
+9.68%
|
-
|
|
Dec 10
2025
|
Kristen M Oelschlager Chief Operating Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
2,552
-8.57%
|
$96,976
$38.02 P/Share
|
|
Dec 10
2025
|
Kristen M Oelschlager Chief Operating Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
6,170
+17.17%
|
-
|
|
Dec 10
2025
|
Derek J Maetzold Pres. & Chief Exec. Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
6,070
-8.28%
|
$230,660
$38.02 P/Share
|
|
Dec 10
2025
|
Derek J Maetzold Pres. & Chief Exec. Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
15,424
+17.39%
|
-
|
|
Dec 10
2025
|
Tobin W Juvenal Chief Commercial Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
2,490
-2.43%
|
$94,620
$38.02 P/Share
|
|
Dec 10
2025
|
Tobin W Juvenal Chief Commercial Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
6,170
+5.68%
|
-
|
|
Dec 09
2025
|
Frank Stokes Chief Financial Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
6,534
-11.28%
|
$248,292
$38.25 P/Share
|
|
Dec 09
2025
|
Frank Stokes Chief Financial Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
14,616
+20.14%
|
-
|
|
Dec 09
2025
|
Kristen M Oelschlager Chief Operating Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
4,691
-16.59%
|
$178,258
$38.25 P/Share
|
|
Dec 09
2025
|
Kristen M Oelschlager Chief Operating Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
15,961
+36.07%
|
-
|
|
Dec 09
2025
|
Derek J Maetzold Pres. & Chief Exec. Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
13,181
-18.55%
|
$500,878
$38.25 P/Share
|
|
Dec 09
2025
|
Derek J Maetzold Pres. & Chief Exec. Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
33,495
+32.04%
|
-
|
|
Dec 09
2025
|
Tobin W Juvenal Chief Commercial Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
6,441
-6.27%
|
$244,758
$38.25 P/Share
|
|
Dec 09
2025
|
Tobin W Juvenal Chief Commercial Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
15,961
+13.44%
|
-
|
|
Dec 04
2025
|
Derek J Maetzold Pres. & Chief Exec. Officer |
SELL
Open market or private sale
|
Direct |
1,339
-3.44%
|
$53,560
$40.03 P/Share
|
|
Dec 02
2025
|
Derek J Maetzold Pres. & Chief Exec. Officer |
SELL
Open market or private sale
|
Direct |
2,678
-6.44%
|
$104,442
$39.23 P/Share
|
|
Nov 26
2025
|
Derek J Maetzold Pres. & Chief Exec. Officer |
SELL
Open market or private sale
|
Direct |
4,258
-9.29%
|
$170,320
$40.09 P/Share
|
|
Nov 25
2025
|
Derek J Maetzold Pres. & Chief Exec. Officer |
SELL
Open market or private sale
|
Direct |
5,115
-10.04%
|
$204,600
$40.05 P/Share
|
|
Nov 20
2025
|
Tobin W Juvenal Chief Commercial Officer |
SELL
Open market or private sale
|
Direct |
4,693
-5.26%
|
$164,255
$35.58 P/Share
|
|
Nov 20
2025
|
Tobin W Juvenal Chief Commercial Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
4,693
+4.99%
|
$14,079
$3.38 P/Share
|
|
Nov 18
2025
|
Derek J Maetzold Pres. & Chief Exec. Officer |
SELL
Open market or private sale
|
Direct |
2,678
-4.99%
|
$91,052
$34.02 P/Share
|
|
Nov 12
2025
|
Tobin W Juvenal Chief Commercial Officer |
SELL
Open market or private sale
|
Direct |
200
-0.24%
|
$7,000
$35.4 P/Share
|
|
Nov 11
2025
|
Kristen M Oelschlager Chief Operating Officer |
SELL
Open market or private sale
|
Direct |
18,932
-60.57%
|
$662,620
$35.1 P/Share
|
|
Nov 11
2025
|
Tobin W Juvenal Chief Commercial Officer |
SELL
Open market or private sale
|
Direct |
500
-0.59%
|
$17,500
$35.39 P/Share
|
|
Nov 11
2025
|
Frank Stokes Chief Financial Officer |
SELL
Open market or private sale
|
Direct |
5,388
-11.06%
|
$188,580
$35.08 P/Share
|
|
Nov 05
2025
|
Derek J Maetzold Pres. & Chief Exec. Officer |
SELL
Open market or private sale
|
Direct |
2,678
-4.76%
|
$83,018
$31.85 P/Share
|
|
Nov 04
2025
|
Derek J Maetzold Pres. & Chief Exec. Officer |
SELL
Open market or private sale
|
Direct |
6,695
-5.34%
|
$200,850
$30.77 P/Share
|
|
Oct 31
2025
|
Kristen M Oelschlager Chief Operating Officer |
SELL
Open market or private sale
|
Direct |
12,678
-31.5%
|
$316,950
$25.04 P/Share
|
|
Oct 20
2025
|
Derek J Maetzold Pres. & Chief Exec. Officer |
SELL
Open market or private sale
|
Direct |
1,339
-2.08%
|
$29,458
$22.44 P/Share
|
|
Oct 02
2025
|
Derek J Maetzold Pres. & Chief Exec. Officer |
SELL
Open market or private sale
|
Direct |
1,339
-2.04%
|
$29,458
$22.58 P/Share
|