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 B  AB  JB*  OB  OE*  OE
 S  AS  JS*  OS  OS*  3
 JB
 JS
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Detailed Insider History for:
CASTLE BIOSCIENCES INC: CSTL
Price: 5/29/26 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
$21.08 $44.28 $14.59 $639 30 393 0.0% 4.8% 93.00% 2.73%
Exch Sector Industry Sub-Industry
NasdaqGM Services Health Services Services- Medical Laboratories
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#
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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
    
 
COLE G BRADLEY
DIR
JB
---
13,667
---
5/22/26
---
---
32,976
70.8
D
R
5/27/26 - 4:20:50 pm
2
    
 
BRADBURY DANIEL
DIR
JB
---
13,667
---
5/22/26
---
---
22,340
157.6
D
R
5/27/26 - 4:18:47 pm
3
    
 
HARRISON MILES
DIR
JB
---
13,667
---
5/22/26
---
---
35,631
62.2
D
R
5/27/26 - 4:18:27 pm
4
    
 
OLSON TIFFANY
DIR
JB
---
13,667
---
5/22/26
---
---
39,573
52.8
D
R
5/27/26 - 4:17:46 pm
5
    
 
GOLDBERG ELLEN
DIR
JB
---
13,667
---
5/22/26
---
---
40,921
50.1
D
R
5/27/26 - 4:17:27 pm
6
    
 
CAPLE KIM
DIR
JB
---
13,667
---
5/22/26
---
---
36,121
60.9
D
R
5/27/26 - 4:16:46 pm
7
    
 
COTTON RODNEY
DIR
JB
---
13,667
---
5/22/26
---
---
32,998
70.7
D
R
5/27/26 - 4:16:25 pm
8
    
 
JUVENAL TOBIN W
O
OB
$37,890
11,210
---
5/21/26
---
$3.38
98,035
12.9
D
---
5/26/26 - 4:06:38 pm
9
    
 
MAETZOLD DEREK J
PR,CEO,DIR
OS
$11,083
550
5/20/26
5/21/26
$20.00
$20.20
21,479
-2.5
D
10b
5/22/26 - 4:12:30 pm
10
    
 
MAETZOLD DEREK J
PR,CEO,DIR
OS
$72,983
3,622
5/20/26
5/21/26
$20.00
$20.20
1,946
-65.1
I
10b
5/22/26 - 4:12:30 pm
11
    
 
MAETZOLD DEREK J
PR,CEO,DIR
OE
$1,315
550
5/20/26
5/21/26
---
$2.39
21,899
2.6
D
10b
5/22/26 - 4:12:30 pm
12
    
 
MAETZOLD DEREK J
PR,CEO,DIR
OS
$137,663
6,214
---
5/7/26
$22.08
$22.59
21,479
-22.4
D
10b
5/11/26 - 4:06:18 pm
13
    
 
MAETZOLD DEREK J
PR,CEO,DIR
OS
$80,241
3,622
---
5/7/26
$22.08
$22.59
2,224
-62.0
I
10b
5/11/26 - 4:06:18 pm
14
    
 
MAETZOLD DEREK J
PR,CEO,DIR
OE
$14,851
6,214
---
5/7/26
---
$2.39
27,693
28.9
D
10b
5/11/26 - 4:06:18 pm
15
    
 
MAETZOLD DEREK J
PR,CEO,DIR
OS
$90,905
3,622
---
4/21/26
---
$25.10
2,502
-59.1
I
10b
4/23/26 - 4:16:45 pm
16
    
 
MAETZOLD DEREK J
PR,CEO,DIR
OS
$13,804
550
---
4/21/26
---
$25.10
21,479
-2.5
D
10b
4/23/26 - 4:16:45 pm
17
    
 
MAETZOLD DEREK J
PR,CEO,DIR
OE
$1,315
550
---
4/21/26
---
$2.39
22,029
2.6
D
10b
4/23/26 - 4:16:45 pm
18
    
 
MAETZOLD DEREK J
PR,CEO,DIR
OS
$155,536
6,214
---
4/6/26
---
$25.03
21,479
-22.4
D
10b
4/8/26 - 4:34:24 pm
19
    
 
MAETZOLD DEREK J
PR,CEO,DIR
OS
$90,659
3,622
---
4/6/26
---
$25.03
2,780
-56.6
I
10b
4/8/26 - 4:34:24 pm
20
    
 
MAETZOLD DEREK J
PR,CEO,DIR
OE
$14,851
6,214
---
4/6/26
---
$2.39
27,693
28.9
D
10b
4/8/26 - 4:34:24 pm
21
    
 
MAETZOLD DEREK J
PR,CEO,DIR
OS
$92,546
3,622
---
3/26/26
---
$25.55
3,058
-54.2
I
10b
3/30/26 - 6:29:27 pm
22
    
 
MAETZOLD DEREK J
PR,CEO,DIR
OS
$14,053
550
---
3/26/26
---
$25.55
21,479
-2.5
D
10b
3/30/26 - 6:29:27 pm
23
    
 
MAETZOLD DEREK J
PR,CEO,DIR
OE
$1,315
550
---
3/26/26
---
$2.39
22,029
2.6
D
10b
3/30/26 - 6:29:27 pm
24
    
 
COTTON RODNEY
DIR
JB
---
5,329
---
3/26/26
---
---
19,331
38.1
D
R
3/30/26 - 6:27:20 pm
25
    
 
MAETZOLD DEREK J
PR,CEO,DIR
AS
$500,098
19,300
3/17/26
3/18/26
---
$25.39
21,479
-47.3
D
10b
3/19/26 - 4:21:26 pm
26
    
 
MAETZOLD DEREK J
PR,CEO,DIR
AS
$792,410
30,779
3/13/26
3/16/26
$25.45
$26.68
40,779
-43.0
D
10b
3/17/26 - 4:36:05 pm
27
    
 
JUVENAL TOBIN W
O
AS
$526,582
20,863
---
3/12/26
---
$25.24
86,825
-19.4
D
10b
3/16/26 - 4:07:57 pm
28
    
 
MAETZOLD DEREK J
PR,CEO,DIR
OS
$1,037,889
40,489
3/11/26
3/12/26
---
$25.28
71,558
-36.1
D
10b
3/13/26 - 4:10:14 pm
29
    
 
MAETZOLD DEREK J
PR,CEO,DIR
OS
$94,932
3,636
---
3/11/26
---
$26.11
3,336
-52.2
I
10b
3/13/26 - 4:10:14 pm
30
    
 
MAETZOLD DEREK J
PR,CEO,DIR
OE
$14,880
6,226
---
3/11/26
---
$2.39
112,047
5.9
D
10b
3/13/26 - 4:10:14 pm
31
    
 
STOKES FRANK
CFO
AS
$167,908
6,001
---
3/5/26
---
$27.98
60,085
-9.1
D
10b
3/9/26 - 4:13:53 pm
32
3m
1
100%
-22%
3
COLE G BRADLEY
DIR
OS
$210,727
7,403
---
3/5/26
$28.44
$28.51
19,309
-27.7
D
---
3/9/26 - 4:12:43 pm
33
    
 
COLE G BRADLEY
DIR
OE
$16,048
4,748
---
3/5/26
---
$3.38
26,712
21.6
D
---
3/9/26 - 4:12:43 pm
34
    
 
JUVENAL TOBIN W
O
JS
$395,390
14,115
3/3/26
3/4/26
$27.57
$28.17
92,316
-13.3
D
R
3/5/26 - 5:18:41 pm
35
    
 
JUVENAL TOBIN W
O
JB
---
25,771
---
3/4/26
---
---
118,087
27.9
D
R
3/5/26 - 5:18:41 pm
36
    
 
OELSCHLAGER KRISTEN M
COO
JS
$258,243
9,219
3/3/26
3/4/26
$27.57
$28.17
20,068
-31.5
D
R
3/5/26 - 5:16:56 pm
37
    
 
OELSCHLAGER KRISTEN M
COO
JB
---
25,771
---
3/4/26
---
---
45,839
128.4
D
R
3/5/26 - 5:16:56 pm
38
    
 
MAETZOLD DEREK J
PR,CEO,DIR
JS
$1,030,132
36,974
3/3/26
3/4/26
$27.57
$28.17
64,655
-36.4
D
R
3/5/26 - 5:12:16 pm
39
    
 
MAETZOLD DEREK J
PR,CEO,DIR
JB
---
59,097
---
3/4/26
---
---
123,752
91.4
D
R
3/5/26 - 5:12:16 pm
40
    
 
STOKES FRANK
CFO
OS
$401,876
14,343
3/3/26
3/4/26
$27.57
$28.17
48,872
-22.7
D
R,10b
3/5/26 - 5:08:38 pm
41
    
 
STOKES FRANK
CFO
JB
---
24,146
---
3/4/26
---
---
73,018
49.4
D
R,10b
3/5/26 - 5:08:38 pm
42
    
 
STOKES FRANK
CFO
OE
$12,844
3,800
---
3/4/26
---
$3.38
66,086
6.1
D
R,10b
3/5/26 - 5:08:38 pm
43
    
 
STOKES FRANK
CFO
AS
$192,073
7,000
---
3/3/26
$27.32
$27.81
52,483
-11.8
D
R,10b
3/5/26 - 5:08:38 pm
44
    
 
MAETZOLD DEREK J
PR,CEO,DIR
AS
$158,757
4,017
2/3/26
2/4/26
$37.82
$38.61
83,698
-4.6
D
10b
2/5/26 - 4:17:22 pm
45
    
 
MAETZOLD DEREK J
PR,CEO,DIR
AS
$160,732
4,017
---
1/20/26
---
$40.01
87,715
-4.4
D
10b
1/22/26 - 4:15:22 pm
46
    
 
MAETZOLD DEREK J
PR,CEO,DIR
JB
---
62,219
---
1/12/26
---
---
91,732
210.8
D
---
1/14/26 - 4:30:11 pm
47
    
 
OELSCHLAGER KRISTEN M
COO
JB
---
9,207
---
1/12/26
---
---
21,530
74.7
D
---
1/14/26 - 4:30:09 pm
48
    
 
JUVENAL TOBIN W
O
JB
---
9,207
---
1/12/26
---
---
96,032
10.6
D
---
1/14/26 - 4:30:07 pm
49
    
 
STOKES FRANK
CFO
JB
---
8,124
---
1/12/26
---
---
58,450
16.1
D
---
1/14/26 - 4:30:05 pm
50
    
 
MAETZOLD DEREK J
PR,CEO,DIR
AS
$155,694
4,017
1/5/26
1/6/26
$38.09
$40.10
29,513
-12.0
D
10b
1/7/26 - 4:06:16 pm
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