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 S  AS  JS*  OS  OS*  3
 JB
 JS
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Detailed Insider History for:
CASTLE BIOSCIENCES INC: CSTL
Price: 8/15/25 52-Wk
High		 52-Wk
Low		 Mkt Cap (mm) Shrs Out (mm) 3-Mth Ave
Vol (m)		 Ind. Yield Short Int
% Float		 Inst. Owned Insider Owned
$20.09 $35.84 $14.59 $583 29 505 0.0% 5.5% 93.01% 3.16%
Exch Sector Industry Sub-Industry
NasdaqGM Services Health Services Services- Medical Laboratories
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Insider Statistics
T N H M S
Filer Name
Insider Title
Trans Type
Dollar Value
Shares Traded
Trans Date From
Trans Date To
Trans Price From
Trans Price To
Total Holdings
Delta % Owned
Owned
Other Info
Input Date
1
    
 
MAETZOLD DEREK J
PR,CEO,DIR
AS
$26,834
1,339
---
8/15/25
---
$20.04
68,344
-1.9
D
10b
8/19/25 - 4:04:43 pm
2
    
 
MAETZOLD DEREK J
PR,CEO,DIR
AS
$839,043
43,019
---
8/13/25
---
$19.50
69,683
-38.2
D
10b
8/15/25 - 4:14:28 pm
3
    
 
MAETZOLD DEREK J
PR,CEO,DIR
JS
$464,098
23,972
---
8/8/25
---
$19.36
112,702
-17.5
D
---
8/12/25 - 4:32:21 pm
4
    
 
MAETZOLD DEREK J
PR,CEO,DIR
JB
---
66,991
---
8/8/25
---
---
136,674
96.1
D
---
8/12/25 - 4:32:21 pm
5
    
 
STOKES FRANK
CFO
JS
$84,332
4,356
---
8/8/25
---
$19.36
48,716
-8.2
D
---
8/12/25 - 4:31:38 pm
6
    
 
STOKES FRANK
CFO
JB
---
9,744
---
8/8/25
---
---
53,072
22.5
D
---
8/12/25 - 4:31:38 pm
7
    
 
OELSCHLAGER KRISTEN M
COO
JS
$54,285
2,804
---
8/8/25
---
$19.36
171,800
-1.6
D
---
8/12/25 - 4:31:12 pm
8
    
 
OELSCHLAGER KRISTEN M
COO
JB
---
10,640
---
8/8/25
---
---
174,604
6.5
D
---
8/12/25 - 4:31:12 pm
9
    
 
JUVENAL TOBIN W
O
JS
$83,132
4,294
---
8/8/25
---
$19.36
84,527
-4.8
D
---
8/12/25 - 4:30:28 pm
10
    
 
JUVENAL TOBIN W
O
JB
---
10,640
---
8/8/25
---
---
88,821
13.6
D
---
8/12/25 - 4:30:28 pm
11
    
 
MAETZOLD DEREK J
PR,CEO,DIR
AS
$357,930
17,632
---
6/27/25
---
$20.30
3,615
-83.0
I
10b
7/1/25 - 4:05:26 pm
12
    
 
MAETZOLD DEREK J
PR,CEO,DIR
AS
$100,363
4,944
---
6/27/25
---
$20.30
69,683
-6.6
D
10b
7/1/25 - 4:05:26 pm
13
    
 
COLE G BRADLEY
DIR
JB
---
8,673
---
5/21/25
---
---
21,964
65.3
D
R
5/23/25 - 5:01:17 pm
14
    
 
BRADBURY DANIEL
DIR
JB
---
8,673
---
5/21/25
---
---
8,673
New
D
R
5/23/25 - 4:19:15 pm
15
    
 
COTTON RODNEY
DIR
JB
---
8,673
---
5/21/25
---
---
14,002
162.8
D
R
5/23/25 - 4:17:29 pm
16
    
 
CAPLE KIM
DIR
JB
---
8,673
---
5/21/25
---
---
22,454
62.9
D
R
5/23/25 - 4:16:13 pm
17
    
 
GOLDBERG ELLEN
DIR
JB
---
8,673
---
5/21/25
---
---
27,254
46.7
D
R
5/23/25 - 4:14:18 pm
18
    
 
OLSON TIFFANY
DIR
JB
---
8,673
---
5/21/25
---
---
25,906
50.3
D
R
5/23/25 - 4:12:49 pm
19
    
 
HARRISON MILES
DIR
JB
---
8,673
---
5/21/25
---
---
21,964
65.3
D
R
5/23/25 - 4:10:47 pm
20
    
 
MAETZOLD DEREK J
PR,CEO,DIR
AS
$94,851
4,408
---
4/21/25
---
$21.52
4,275
-50.8
I
10b
4/23/25 - 4:08:14 pm
21
    
 
MAETZOLD DEREK J
PR,CEO,DIR
AS
$26,596
1,236
---
4/21/25
---
$21.52
74,627
-1.6
D
10b
4/23/25 - 4:08:14 pm
22
    
 
MAETZOLD DEREK J
PR,CEO,DIR
AS
$88,982
4,408
4/8/25
4/9/25
$20.03
$20.22
4,440
-49.8
I
10b
4/10/25 - 4:07:59 pm
23
    
 
MAETZOLD DEREK J
PR,CEO,DIR
AS
$24,950
1,236
4/8/25
4/9/25
$20.03
$20.22
75,863
-1.6
D
10b
4/10/25 - 4:07:59 pm
24
    
 
MAETZOLD DEREK J
PR,CEO,DIR
AS
$89,482
4,408
---
3/26/25
---
$20.30
4,605
-48.9
I
10b
3/28/25 - 4:07:36 pm
25
    
 
MAETZOLD DEREK J
PR,CEO,DIR
AS
$25,091
1,236
---
3/26/25
---
$20.30
77,099
-1.6
D
10b
3/28/25 - 4:07:36 pm
26
    
 
COTTON RODNEY
DIR
JB
---
5,329
---
3/26/25
---
---
5,329
New
D
R
3/28/25 - 4:06:04 pm
27
    
 
MAETZOLD DEREK J
PR,CEO,DIR
AS
$497,000
24,769
3/7/25
3/10/25
---
$19.52
78,335
-24.0
D
10b
3/11/25 - 4:07:59 pm
28
    
 
MAETZOLD DEREK J
PR,CEO,DIR
AS
$88,674
4,408
---
3/7/25
$20.05
$20.74
4,770
-48.0
I
10b
3/11/25 - 4:07:59 pm
29
    
 
STOKES FRANK
CFO
JS
$121,109
5,448
---
3/4/25
---
$22.23
43,328
-11.2
D
R
3/6/25 - 4:10:29 pm
30
    
 
STOKES FRANK
CFO
JB
---
12,186
---
3/4/25
---
---
48,776
33.3
D
R
3/6/25 - 4:10:29 pm
31
    
 
STOKES FRANK
CFO
AS
$214,828
8,046
---
2/20/25
---
$26.70
35,319
-18.6
D
10b
2/24/25 - 4:23:07 pm
32
1y
68
63%
-6%
6
BRADBURY DANIEL
DIR
AS
$221,637
7,867
---
2/5/25
---
$28.17
---
All
I
10b
2/7/25 - 4:12:40 pm
33
    
 
MAETZOLD DEREK J
PR,CEO,DIR
AS
$44,262
1,579
---
1/13/25
$27.51
$29.48
5,104
-23.6
I
10b
1/15/25 - 4:57:40 pm
34
    
 
MAETZOLD DEREK J
PR,CEO,DIR
AS
$27,641
986
---
1/13/25
$27.51
$29.48
80,818
-1.2
D
10b
1/15/25 - 4:57:40 pm
35
    
 
MAETZOLD DEREK J
PR,CEO,DIR
AS
$87,736
2,958
1/6/25
1/7/25
$28.42
$30.14
81,804
-3.5
D
10b
1/8/25 - 6:18:14 pm
36
    
 
MAETZOLD DEREK J
PR,CEO,DIR
AS
$140,331
4,731
1/6/25
1/7/25
$28.42
$30.14
5,254
-47.4
I
10b
1/8/25 - 6:18:14 pm
37
1y
68
63%
-6%
6
BRADBURY DANIEL
DIR
AS
$229,226
7,867
---
1/6/25
$28.39
$29.82
1,425
-84.7
I
10b
1/8/25 - 6:19:37 pm
38
    
 
JUVENAL TOBIN W
O
AS
$66,900
2,230
---
1/6/25
---
$30.00
69,943
-3.1
D
10b
1/8/25 - 6:17:07 pm
39
    
 
MAETZOLD DEREK J
PR,CEO,DIR
AS
$265,358
9,364
---
12/17/24
$28.33
$28.76
84,762
-9.9
D
10b
12/19/24 - 4:39:01 pm
40
    
 
MAETZOLD DEREK J
PR,CEO,DIR
AS
$705,074
24,544
12/13/24
12/16/24
$28.47
$28.83
94,126
-20.7
D
10b
12/17/24 - 4:21:23 pm
41
    
 
MAETZOLD DEREK J
PR,CEO,DIR
AS
$45,223
1,579
---
12/13/24
$28.47
$29.16
5,702
-21.7
I
10b
12/17/24 - 4:21:23 pm
42
    
 
JUVENAL TOBIN W
O
JS
$179,348
5,885
12/9/24
12/10/24
---
$29.63
66,252
-8.2
D
R
12/11/24 - 4:55:50 pm
43
    
 
JUVENAL TOBIN W
O
JB
---
23,880
12/9/24
12/10/24
---
---
73,676
48.0
D
R
12/11/24 - 4:55:50 pm
44
    
 
MAETZOLD DEREK J
PR,CEO,DIR
JS
$649,798
21,361
12/9/24
12/10/24
---
$29.63
106,063
-16.8
D
R
12/11/24 - 4:53:37 pm
45
    
 
MAETZOLD DEREK J
PR,CEO,DIR
JB
---
54,283
12/9/24
12/10/24
---
---
124,740
77.0
D
R
12/11/24 - 4:53:37 pm
46
    
 
STOKES FRANK
CFO
JS
$311,941
10,244
12/9/24
12/10/24
---
$29.63
38,869
-20.9
D
R
12/11/24 - 4:51:53 pm
47
    
 
STOKES FRANK
CFO
JB
---
22,786
12/9/24
12/10/24
---
---
46,138
97.6
D
R
12/11/24 - 4:51:53 pm
48
    
 
OELSCHLAGER KRISTEN M
COO
JS
$193,890
6,362
12/9/24
12/10/24
---
$29.63
146,759
-4.2
D
R
12/11/24 - 4:49:56 pm
49
    
 
OELSCHLAGER KRISTEN M
COO
JB
---
23,880
12/9/24
12/10/24
---
---
154,148
18.3
D
R
12/11/24 - 4:49:56 pm
50
    
 
MAETZOLD DEREK J
PR,CEO,DIR
AS
$61,826
1,972
---
12/5/24
---
$31.35
85,748
-2.2
D
10b
12/9/24 - 5:09:54 pm
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