Latest Insider Transactions at Castle Biosciences Inc (CSTL)
This section provides a real-time view of insider transactions for Castle Biosciences Inc (CSTL). The data is sourced from Form 4 filings with the SEC, which are filed by insiders of CASTLE BIOSCIENCES INC to disclose their transactions in the company's securities. By reviewing this information, investors can gain insights into the trading activity of CASTLE BIOSCIENCES INC's insiders and make more informed investment decisions.
Insider Transaction List
| 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
|
|
Sep 17
2025
|
Derek J Maetzold Pres. & Chief Exec. Officer |
SELL
Open market or private sale
|
Direct |
1,339
-2.0%
|
$28,119
$21.97 P/Share
|
|
Sep 02
2025
|
Derek J Maetzold Pres. & Chief Exec. Officer |
SELL
Open market or private sale
|
Direct |
1,339
-1.96%
|
$30,797
$23.93 P/Share
|
|
Aug 27
2025
|
Kristen M Oelschlager Chief Operating Officer |
SELL
Open market or private sale
|
Direct |
30,684
-9.36%
|
$644,364
$21.86 P/Share
|
|
Aug 15
2025
|
Derek J Maetzold Pres. & Chief Exec. Officer |
SELL
Open market or private sale
|
Direct |
1,339
-1.92%
|
$26,780
$20.04 P/Share
|
|
Aug 13
2025
|
Derek J Maetzold Pres. & Chief Exec. Officer |
SELL
Open market or private sale
|
Direct |
43,019
-38.17%
|
$817,361
$19.5 P/Share
|
|
Aug 08
2025
|
Tobin W Juvenal Chief Commercial Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
4,294
-4.83%
|
$81,586
$19.36 P/Share
|
|
Aug 08
2025
|
Tobin W Juvenal Chief Commercial Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
10,640
+10.7%
|
-
|
|
Aug 08
2025
|
Kristen M Oelschlager Chief Operating Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
2,804
-1.61%
|
$53,276
$19.36 P/Share
|
|
Aug 08
2025
|
Kristen M Oelschlager Chief Operating Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
10,640
+5.74%
|
-
|
|
Aug 08
2025
|
Frank Stokes Chief Financial Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
4,356
-8.21%
|
$82,764
$19.36 P/Share
|
|
Aug 08
2025
|
Frank Stokes Chief Financial Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
9,744
+15.51%
|
-
|