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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:
PRAXIS PRECISION MEDICINES INC: PRAX
Price: 6/12/26 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
$266.58 $366.52 $37.19 $7,432 28 443 0.0% 13.1% 116.75% 0.32%
Exch Sector Industry Sub-Industry
NasdaqGS Manufacturing Chemicals And Allied Products Pharmaceutical Preparations
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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
    
 
ARBUCKLE STUART A
DIR
JB
---
1,371
---
6/10/26
---
---
2,537
117.6
D
R
6/12/26 - 5:24:26 pm
2
    
 
CHODAKEWITZ JEFFREY
DIR
JB
---
1,371
---
6/10/26
---
---
1,371
New
D
R
6/12/26 - 5:24:20 pm
3
    
 
YOUNG WILLIAM D
DIR
JB
---
1,371
---
6/10/26
---
---
3,269
72.2
D
R
6/12/26 - 5:24:15 pm
4
    
 
DESIMONE JILL
DIR
JB
---
1,371
---
6/10/26
---
---
2,337
141.9
D
R
6/12/26 - 5:24:09 pm
5
    
 
CUDKOWICZ MERIT ESTER
DIR
JB
---
1,371
---
6/10/26
---
---
1,371
New
D
R
6/12/26 - 5:24:03 pm
6
    
 
MITCHELL DEAN J
DIR
JB
---
1,371
---
6/10/26
---
---
18,622
7.9
D
R
6/12/26 - 5:23:57 pm
7
    
 
KINDLER JEFFREY B
DIR
JB
---
1,371
---
6/10/26
---
---
2,537
117.6
D
R
6/12/26 - 5:23:52 pm
8
    
 
NORDEN GREGORY
DIR
JB
---
1,371
---
6/10/26
---
---
1,559
729.3
D
R
6/12/26 - 5:23:45 pm
9
    
 
MASTROCOLA LAUREN
AO
JB
$21,329
127
---
5/14/26
---
$167.94
13,573
0.9
D
---
5/19/26 - 9:45:41 pm
10
    
 
NEMIROFF ALEX
GC,SEC
JB
$13,100
78
---
5/14/26
---
$167.94
26,011
0.3
D
---
5/19/26 - 9:45:18 pm
11
    
 
KELLY TIMOTHY EDWIN
CFO
JB
$20,321
121
---
5/14/26
---
$167.94
31,167
0.4
D
---
5/19/26 - 9:44:39 pm
12
    
 
SNIECINSKI MEGAN
COO
JB
$14,947
89
---
5/14/26
---
$167.94
28,664
0.3
D
---
5/19/26 - 9:43:07 pm
13
    
 
SOUZA MARCIO
CEO,DIR
JB
$21,161
126
---
5/14/26
---
$167.94
77,016
0.2
D
---
5/19/26 - 9:42:46 pm
14
    
 
ARBUCKLE STUART A
DIR
JB
---
1,166
---
2/6/26
---
---
1,166
New
D
R
2/10/26 - 4:59:33 pm
15
    
 
KINDLER JEFFREY B
DIR
JB
---
1,166
---
2/6/26
---
---
1,166
New
D
R
2/10/26 - 4:57:40 pm
16
    
 
MASTROCOLA LAUREN
AO
JS
$94,855
344
---
1/12/26
---
$275.74
13,446
-2.5
D
R
1/13/26 - 8:20:33 pm
17
    
 
SNIECINSKI MEGAN
COO
JS
$244,030
885
---
1/12/26
---
$275.74
28,530
-3.0
D
R
1/13/26 - 8:19:50 pm
18
    
 
NEMIROFF ALEX
GC,SEC
JS
$211,768
768
---
1/12/26
---
$275.74
25,933
-2.9
D
R
1/13/26 - 8:19:19 pm
19
    
 
KELLY TIMOTHY EDWIN
CFO
JS
$260,023
943
---
1/12/26
---
$275.74
31,046
-2.9
D
R
1/13/26 - 8:18:33 pm
20
    
 
MASTROCOLA LAUREN
AO
JS
$105,861
367
---
1/10/26
---
$288.45
13,790
-2.6
D
R
1/12/26 - 5:51:02 pm
21
    
 
SNIECINSKI MEGAN
COO
JS
$313,545
1,087
---
1/10/26
---
$288.45
29,415
-3.6
D
R
1/12/26 - 5:50:29 pm
22
    
 
NEMIROFF ALEX
GC,SEC
JS
$264,509
917
---
1/10/26
---
$288.45
26,701
-3.3
D
R
1/12/26 - 5:49:56 pm
23
    
 
KELLY TIMOTHY EDWIN
CFO
JS
$385,081
1,335
---
1/10/26
---
$288.45
31,989
-4.0
D
R
1/12/26 - 5:49:02 pm
24
    
 
SOUZA MARCIO
CEO,DIR
JS
$1,226,489
4,252
---
1/10/26
---
$288.45
76,890
-5.2
D
R
1/12/26 - 5:48:23 pm
25
    
 
MASTROCOLA LAUREN
AO
JB
---
3,750
---
1/8/26
---
---
14,157
36.0
D
R
1/12/26 - 5:51:02 pm
26
    
 
SNIECINSKI MEGAN
COO
JB
---
9,625
---
1/8/26
---
---
30,502
46.1
D
R
1/12/26 - 5:50:29 pm
27
    
 
NEMIROFF ALEX
GC,SEC
JB
---
6,875
---
1/8/26
---
---
27,618
33.1
D
R
1/12/26 - 5:49:56 pm
28
    
 
KELLY TIMOTHY EDWIN
CFO
JB
---
8,800
---
1/8/26
---
---
33,324
35.9
D
R
1/12/26 - 5:49:02 pm
29
    
 
SOUZA MARCIO
CEO,DIR
JB
---
27,640
---
1/8/26
---
---
81,142
51.7
D
R
1/12/26 - 5:48:23 pm
30
    
 
ARBUCKLE STUART A
DIR
3
---
---
---
1/8/26
---
---
---
---
---
---
1/12/26 - 5:46:56 pm
31
    
 
KINDLER JEFFREY B
DIR
3
---
---
---
1/8/26
---
---
---
---
---
---
1/12/26 - 5:44:39 pm
32
    
 
MASTROCOLA LAUREN
AO
JS
$10,242
35
---
1/7/26
---
$292.63
10,407
-0.3
D
R
1/9/26 - 4:47:53 pm
33
    
 
NEMIROFF ALEX
GC,SEC
JS
$26,044
89
---
1/7/26
---
$292.63
20,743
-0.4
D
R
1/9/26 - 4:47:25 pm
34
    
 
KELLY TIMOTHY EDWIN
CFO
JS
$40,676
139
---
1/7/26
---
$292.63
24,524
-0.6
D
R
1/9/26 - 4:47:02 pm
35
    
 
SOUZA MARCIO
CEO,DIR
JS
$118,515
405
---
1/7/26
---
$292.63
53,502
-0.8
D
R
1/9/26 - 4:46:36 pm
36
    
 
SNIECINSKI MEGAN
COO
3
---
---
---
1/1/26
---
---
20,877
---
D
R
1/9/26 - 4:37:04 pm
37
    
 
SOUZA MARCIO
CEO,DIR
JS
---
400
---
12/30/25
---
---
2,600
-13.3
I
---
12/31/25 - 7:17:43 pm
38
    
 
NEMIROFF ALEX
GC,SEC
OS
$4,852,256
25,130
---
11/20/25
$190.86
$194.30
20,832
-54.7
D
---
11/21/25 - 9:41:39 pm
39
    
 
NEMIROFF ALEX
GC,SEC
OE
$1,853,531
25,130
---
11/20/25
$44.40
$56.94
45,962
120.6
D
---
11/21/25 - 9:41:39 pm
40
    
 
MASTROCOLA LAUREN
AO
OS
$2,612,244
13,600
---
11/20/25
$191.96
$192.71
10,442
-56.6
D
---
11/21/25 - 9:39:47 pm
41
    
 
MASTROCOLA LAUREN
AO
OE
$831,257
13,600
---
11/20/25
$43.37
$56.94
24,042
130.2
D
---
11/21/25 - 9:39:47 pm
42
    
 
KELLY TIMOTHY EDWIN
CFO
JB
$12,142
384
---
11/14/25
---
$31.62
24,663
1.6
D
---
11/21/25 - 9:42:37 pm
43
    
 
ADAGE CAPITAL MANAGEMENT L P
BO
JS
$33,198,124
313,910
---
10/16/25
$90.00
$140.00
2,060,175
-13.2
I
---
10/17/25 - 4:10:45 pm
44
1y
2
50%
3,217%
6
MITCHELL DEAN J
DIR
OB
$483,991
12,251
---
9/24/25
$14.36
$44.04
17,251
245.0
D
---
9/25/25 - 4:40:48 pm
45
    
 
ADAGE CAPITAL MANAGEMENT L P
BO
3
---
---
---
8/18/25
---
---
2,374,085
---
I
---
8/19/25 - 4:10:13 pm
46
    
 
SOUZA MARCIO
CEO,DIR
JB
$10,974
348
---
5/14/25
---
$31.54
53,907
0.6
D
---
5/19/25 - 4:57:11 pm
47
    
 
KELLY TIMOTHY EDWIN
CFO
JB
$7,852
249
---
5/14/25
---
$31.54
24,279
1.0
D
---
5/19/25 - 4:55:38 pm
48
    
 
NEMIROFF ALEX
GC,SEC
JS
$4,355
51
---
2/12/25
---
$85.40
20,832
-0.2
D
R
2/14/25 - 4:29:47 pm
49
    
 
MASTROCOLA LAUREN
AO
JS
$3,416
40
---
2/12/25
---
$85.40
10,442
-0.4
D
R
2/14/25 - 4:29:37 pm
50
    
 
SOUZA MARCIO
CEO,DIR
JS
$34,245
401
---
2/12/25
---
$85.40
53,559
-0.7
D
R
2/14/25 - 4:29:25 pm
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