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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:
IGM BIOSCIENCES INC: IGMS
Price: 8/22/25 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
$1.27 $22.50 $0.92 $77 37 673 0.0% 2.1% 46.88% 35.39%
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
    
 
BAKER BROS ADVISORS LP
BO
JS
---
4,120,410
---
8/14/25
---
---
---
All
I
R
8/18/25 - 5:39:42 pm
2
    
 
REDMILE GROUP LLC
DIR,BO
JS
---
2,964,843
---
8/14/25
---
---
---
All
I
---
8/15/25 - 5:00:13 pm
3
    
 
HAMBLETON JULIE
DIR
JS
---
2,000
---
8/14/25
---
---
---
All
D
---
8/14/25 - 8:52:50 pm
4
    
 
LEE MICHAEL STEWART
DIR
JS
---
12,712
---
8/14/25
---
---
---
All
D
---
8/14/25 - 7:35:42 pm
5
    
 
TOPSOE HOLDING A S
BO
JS
---
10,400,564
---
8/14/25
---
---
---
All
D
---
8/14/25 - 5:28:15 pm
6
    
 
TOPSOE JAKOB HALDOR
DIR,BO
JS
---
10,400,564
---
8/14/25
---
---
---
All
I
---
8/14/25 - 5:27:24 pm
7
    
 
TOPSOE JAKOB HALDOR
DIR,BO
JS
---
91,712
---
8/14/25
---
---
---
All
D
---
8/14/25 - 5:27:24 pm
8
    
 
TOPSOE CHRISTINA TENG
DIR,BO
JS
---
10,410,364
---
8/14/25
---
---
---
All
I
---
8/14/25 - 5:26:25 pm
9
    
 
TOPSOE CHRISTINA TENG
DIR,BO
JS
---
54,235
---
8/14/25
---
---
---
All
D
---
8/14/25 - 5:26:25 pm
10
    
 
THOMPSON ELIZABETH H Z
DIR
JS
---
7,196
---
8/14/25
---
---
---
All
D
---
8/14/25 - 5:25:30 pm
11
    
 
STROHL WILLIAM
DIR
JS
---
125,000
---
8/14/25
---
---
---
All
D
---
8/14/25 - 5:24:41 pm
12
    
 
HARLER MARY BETH
CEO,DIR
JS
---
323,680
---
8/14/25
---
---
---
All
D
R
8/14/25 - 5:23:40 pm
13
    
 
BEHRENS M KATHLEEN
DIR
JS
---
390,313
---
8/14/25
---
---
---
All
I
---
8/14/25 - 5:17:32 pm
14
    
 
BEHRENS M KATHLEEN
DIR
JS
---
22,222
---
8/14/25
---
---
---
All
D
---
8/14/25 - 5:17:32 pm
15
    
 
TAHIR MISBAH
CFO
JS*
$11,126
8,741
---
7/23/25
---
$1.27
170,061
-4.9
D
R
7/25/25 - 7:06:03 pm
16
    
 
HARLER MARY BETH
CEO,DIR
JS*
$18,457
14,501
---
7/23/25
---
$1.27
323,680
-4.3
D
R
7/25/25 - 7:03:14 pm
17
    
 
DECKER LISA LYNN
O
JS*
$5,612
4,409
---
7/23/25
---
$1.27
68,169
-6.1
D
R
7/25/25 - 7:01:59 pm
18
    
 
TOPSOE JAKOB HALDOR
DIR,BO
JB
---
828
---
6/30/25
---
---
91,712
0.9
D
R
7/2/25 - 6:55:28 pm
19
    
 
TOPSOE CHRISTINA TENG
DIR,BO
JB
---
1,284
---
6/30/25
---
---
54,235
2.4
D
R
7/2/25 - 6:54:25 pm
20
    
 
THOMPSON ELIZABETH H Z
DIR
JB
---
694
---
6/30/25
---
---
7,196
10.7
D
R
7/2/25 - 6:52:32 pm
21
    
 
BEHRENS M KATHLEEN
DIR
JB
---
1,471
---
6/30/25
---
---
22,222
7.1
D
R
7/2/25 - 6:51:03 pm
22
    
 
BAKER BROS ADVISORS LP
DIR,BO
JB
---
1,906
---
6/30/25
---
---
3,763,362
0.1
I
R
7/2/25 - 5:26:33 pm
23
    
 
LEE MICHAEL STEWART
DIR
JB
---
828
---
6/30/25
---
---
12,712
7.0
D
R
7/2/25 - 4:02:07 pm
24
    
 
REDMILE GROUP LLC
DIR,BO
JB
---
828
---
6/30/25
---
---
2,964,843
0.0
I
R
7/2/25 - 4:01:29 pm
25
    
 
WEBER STEVEN
AO
S
$583
486
---
6/16/25
---
$1.20
26,530
-1.8
D
R
6/20/25 - 8:24:15 pm
26
    
 
TAHIR MISBAH
CFO
S
$1,825
1,522
---
6/16/25
---
$1.20
178,802
-0.8
D
R
6/20/25 - 8:23:02 pm
27
    
 
HARLER MARY BETH
CEO,DIR
S
$1,825
1,522
---
6/16/25
---
$1.20
338,181
-0.4
D
R
6/20/25 - 8:20:38 pm
28
    
 
DECKER LISA LYNN
O
S
$1,140
951
---
6/16/25
---
$1.20
72,578
-1.3
D
R
6/20/25 - 8:19:14 pm
29
    
 
WEBER STEVEN
AO
S
$2,090
1,865
---
5/14/25
---
$1.12
27,016
-6.5
D
R
5/16/25 - 4:05:57 pm
30
    
 
LEE MICHAEL STEWART
DIR
JB
---
828
---
3/31/25
---
---
11,884
7.5
D
R
4/2/25 - 9:01:06 pm
31
    
 
REDMILE GROUP LLC
DIR,BO
JB
---
828
---
3/31/25
---
---
2,964,015
0.0
I
R
4/2/25 - 9:00:16 pm
32
    
 
TOPSOE JAKOB HALDOR
DIR,BO
JB
---
828
---
3/31/25
---
---
90,884
0.9
D
R
4/2/25 - 7:04:28 pm
33
    
 
TOPSOE CHRISTINA TENG
DIR,BO
JB
---
1,284
---
3/31/25
---
---
52,951
2.5
D
R
4/2/25 - 7:03:08 pm
34
    
 
THOMPSON ELIZABETH H Z
DIR
JB
---
694
---
3/31/25
---
---
6,502
11.9
D
R
4/2/25 - 7:01:59 pm
35
    
 
BEHRENS M KATHLEEN
DIR
JB
---
1,471
---
3/31/25
---
---
20,751
7.6
D
R
4/2/25 - 7:00:38 pm
36
    
 
BAKER BROS ADVISORS LP
DIR,BO
JB
---
1,906
---
3/31/25
---
---
3,762,409
0.1
I
R
4/2/25 - 4:43:01 pm
37
    
 
WEBER STEVEN
AO
S
$2,092
1,701
---
3/14/25
---
$1.23
28,881
-5.6
D
R
3/18/25 - 7:10:37 pm
38
    
 
TAHIR MISBAH
CFO
S
$9,015
7,329
---
3/14/25
---
$1.23
180,324
-3.9
D
R
3/18/25 - 7:09:16 pm
39
    
 
HARLER MARY BETH
CEO,DIR
S
$9,015
7,329
---
3/14/25
---
$1.23
339,703
-2.1
D
R
3/18/25 - 7:08:13 pm
40
    
 
DECKER LISA LYNN
O
S
$5,550
4,512
---
3/14/25
---
$1.23
73,529
-5.8
D
R
3/18/25 - 7:07:04 pm
41
    
 
WEBER STEVEN
AO
S
$1,907
1,122
---
1/15/25
---
$1.70
30,582
-3.5
D
R
1/17/25 - 5:54:57 pm
42
    
 
TOPSOE JAKOB HALDOR
DIR,BO
JB
---
1,734
---
12/31/24
---
---
90,056
2.0
D
R
1/3/25 - 6:00:20 pm
43
    
 
TOPSOE CHRISTINA TENG
DIR,BO
JB
---
2,687
---
12/31/24
---
---
51,667
5.5
D
R
1/3/25 - 5:58:52 pm
44
    
 
THOMPSON ELIZABETH H Z
DIR
JB
---
1,452
---
12/31/24
---
---
5,808
33.3
D
R
1/3/25 - 5:55:29 pm
45
    
 
BEHRENS M KATHLEEN
DIR
JB
---
3,078
---
12/31/24
---
---
19,280
19.0
D
R
1/3/25 - 5:54:02 pm
46
    
 
BAKER BROS ADVISORS LP
DIR,BO
JB
---
3,988
---
12/31/24
---
---
3,761,456
0.1
I
R
1/3/25 - 5:22:19 pm
47
    
 
LEE MICHAEL STEWART
DIR
JB
---
1,734
---
12/31/24
---
---
11,056
18.6
D
R
1/2/25 - 9:02:21 pm
48
    
 
REDMILE GROUP LLC
DIR,BO
JB
---
1,734
---
12/31/24
---
---
2,963,187
0.1
I
R
1/2/25 - 9:00:33 pm
49
    
 
WEBER STEVEN
AO
S
$4,032
539
---
12/16/24
---
$7.48
31,704
-1.7
D
R
12/18/24 - 7:12:54 pm
50
    
 
DECKER LISA LYNN
O
S
$7,951
1,063
---
12/16/24
---
$7.48
78,041
-1.3
D
R
12/18/24 - 7:11:51 pm
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