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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:
METSERA INC: MTSR
Price: 11/21/25 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
$70.50 $83.86 $12.30 $7,429 105 3,322 0.0% 9.6% 90.24% 13.04%
Exch Sector Industry Sub-Industry
NasdaqGS Manufacturing Chemicals And Allied Products Pharmaceutical Preparations
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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
    
 
FMR LLC
BO
JS
---
2,233,460
---
11/13/25
---
---
---
All
I
---
11/17/25 - 1:51:07 pm
2
    
 
ARCH VENTURE PARTNERS XII LLC
DIR,BO
JS
---
26,816,808
---
11/13/25
---
---
---
All
I
---
11/14/25 - 6:34:16 pm
3
    
 
MARSO STEVEN
O
JS
---
17,000
---
11/13/25
---
---
---
All
D
R
11/13/25 - 9:20:07 pm
4
    
 
BERNS PAUL L
DIR
JS
---
15,837,362
---
11/13/25
---
---
---
All
I
R
11/13/25 - 9:20:05 pm
5
    
 
BERNS PAUL L
DIR
JS
---
961,590
---
11/13/25
---
---
---
All
D
R
11/13/25 - 9:20:05 pm
6
    
 
LANG MATTHEW
LO
JS
---
12,500
---
11/13/25
---
---
---
All
D
R
11/13/25 - 9:20:03 pm
7
    
 
POPULATION HEALTH PARTNERS GP LLC
BO
JS
---
127,675
---
11/13/25
---
---
---
All
D
---
11/13/25 - 9:15:05 pm
8
    
 
POPULATION HEALTH PARTNERS GP LLC
BO
JS
---
12,639,787
---
11/13/25
---
---
---
All
I
---
11/13/25 - 9:15:05 pm
9
    
 
BUROW KRISTINA
DIR
JS
---
2,688
---
11/13/25
---
---
---
All
D
R
11/13/25 - 9:10:04 pm
10
    
 
BUROW KRISTINA
DIR
JS
---
51,411,392
---
11/13/25
---
---
---
All
I
R
11/13/25 - 9:10:04 pm
11
    
 
PINTO JOSHUA
DIR
JS
---
2,688
---
11/13/25
---
---
---
All
D
R
11/13/25 - 9:00:13 pm
12
    
 
STONEHOUSE JON P
DIR
JS
---
2,688
---
11/13/25
---
---
---
All
D
R
11/13/25 - 9:00:11 pm
13
    
 
HUBBARD BRIAN
O
JS
---
17,000
---
11/13/25
---
---
---
All
D
R
11/13/25 - 9:00:10 pm
14
    
 
VISIOLI CHRISTOPHER
CFO
JS
---
21,250
---
11/13/25
---
---
---
All
D
R
11/13/25 - 9:00:08 pm
15
    
 
MEANWELL CLIVE
CB,DIR
JS
---
12,767,462
---
11/13/25
---
---
---
All
I
R
11/13/25 - 9:00:06 pm
16
    
 
MEANWELL CLIVE
CB,DIR
JS
---
5,375
---
11/13/25
---
---
---
All
D
R
11/13/25 - 9:00:06 pm
17
    
 
BERNARD CHRISTOPHER WHITTEN
DIR
JS
---
12,767,462
---
11/13/25
---
---
---
All
I
R
11/13/25 - 9:00:04 pm
18
    
 
BERNARD CHRISTOPHER WHITTEN
DIR
JS
---
21,250
---
11/13/25
---
---
---
All
D
R
11/13/25 - 9:00:04 pm
19
    
 
VALIDAE HEALTH L P
BO
JS
---
12,767,462
---
11/11/25
---
---
---
All
D
---
11/13/25 - 9:05:03 pm
20
    
 
FMR LLC
BO
JS
---
860,722
---
11/10/25
---
---
2,230,450
-27.8
I
---
11/12/25 - 10:48:53 am
21
1m
1
0%
45%
22
FMR LLC
BO
S
$11,817
193
---
11/3/25
---
$61.23
2,356,081
-0.0
I
---
11/5/25 - 9:57:25 am
22
    
 
FMR LLC
BO
JS
---
5,593,464
---
11/3/25
---
---
---
All
I
---
11/5/25 - 9:57:25 am
23
    
 
FMR LLC
BO
JB
---
5,023,572
---
11/3/25
---
---
3,091,172
---
I
---
11/5/25 - 9:57:25 am
24
    
 
FMR LLC
BO
JS
---
633,715
---
10/6/25
---
---
473,832
-57.2
I
---
10/8/25 - 3:35:08 pm
25
    
 
FMR LLC
BO
JB
---
1,107,547
---
9/2/25
---
---
1,107,547
New
I
A
9/12/25 - 4:09:01 pm
26
1m
1
0%
45%
22
FMR LLC
BO
S
$9,648
268
---
9/2/25
---
$36.00
---
All
I
---
9/4/25 - 2:58:55 pm
27
    
 
FMR LLC
BO
JS
---
2,367,294
---
9/2/25
---
---
---
All
I
---
9/4/25 - 2:58:55 pm
28
    
 
FMR LLC
BO
JB
---
2,152,715
---
9/2/25
---
---
1,134,258
---
I
---
9/4/25 - 2:58:55 pm
29
    
 
LANG MATTHEW
LO
3
---
---
---
4/28/25
---
---
---
---
---
---
4/30/25 - 9:08:11 pm
30
    
 
STONEHOUSE JON P
DIR
3
---
---
---
4/28/25
---
---
---
---
---
---
4/30/25 - 9:06:35 pm
31
    
 
FMR LLC
BO
JB
---
4,539,540
---
2/3/25
---
---
4,539,540
New
I
---
2/5/25 - 11:39:25 am
32
    
 
BUROW KRISTINA
DIR,BO
3
---
---
---
1/30/25
---
---
1,063,955
---
I
---
1/30/25 - 9:42:23 pm
33
    
 
MARSO STEVEN
O
3
---
---
---
1/30/25
---
---
---
---
---
---
1/30/25 - 9:41:42 pm
34
    
 
BERNS PAUL L
DIR,BO
3
---
---
---
1/30/25
---
---
957,559
---
D
---
1/30/25 - 9:37:55 pm
35
    
 
VALIDAE HEALTH L P
BO
3
---
---
---
1/30/25
---
---
12,767,462
---
D
---
1/30/25 - 9:35:23 pm
36
    
 
VISIOLI CHRISTOPHER
CFO
3
---
---
---
1/30/25
---
---
---
---
---
---
1/30/25 - 9:34:50 pm
37
    
 
HUBBARD BRIAN
O
3
---
---
---
1/30/25
---
---
---
---
---
---
1/30/25 - 9:33:27 pm
38
    
 
MEANWELL CLIVE
CB,DIR,BO
3
---
---
---
1/30/25
---
---
12,767,462
---
I
---
1/30/25 - 9:32:26 pm
39
    
 
BERNARD CHRISTOPHER WHITTEN
DIR,BO
3
---
---
---
1/30/25
---
---
12,767,462
---
I
---
1/30/25 - 9:29:28 pm
40
    
 
WELLINGTON BIOMEDICAL INNOVATION MASTER INVESTORS
BO
3
---
---
---
1/30/25
---
---
---
---
---
---
1/30/25 - 8:46:24 pm
41
    
 
FMR LLC
BO
3
---
---
---
1/30/25
---
---
---
---
---
---
1/30/25 - 6:28:05 pm
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