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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:
89BIO INC: ETNB
Price: 10/31/25 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
$14.84 $15.06 $4.16 $2,204 149 5,444 0.0% 6.3% 103.69% 0.60%
Exch Sector Industry Sub-Industry
NasdaqGM 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
    
 
HAYDEN MICHAEL R
DIR
JS
---
165,516
---
10/30/25
---
---
---
All
I
---
10/30/25 - 8:31:14 pm
2
    
 
HAYDEN MICHAEL R
DIR
JS
---
80,904
---
10/30/25
---
---
---
All
D
---
10/30/25 - 8:31:14 pm
3
    
 
MARTINS RYAN
CFO
JS
---
374,295
---
10/30/25
---
---
---
All
D
R
10/30/25 - 8:28:17 pm
4
    
 
MARTINS RYAN
CFO
JB
---
35,000
---
10/30/25
---
---
374,295
10.3
D
R
10/30/25 - 8:28:17 pm
5
    
 
PALEKAR ROHAN
CEO,DIR
JS
---
934,273
---
10/30/25
---
---
---
All
D
R
10/30/25 - 8:22:58 pm
6
    
 
PALEKAR ROHAN
CEO,DIR
JB
---
125,000
---
10/30/25
---
---
934,273
15.4
D
R
10/30/25 - 8:22:58 pm
7
    
 
MCWHERTER CHARLES
DIR
JS
---
25,000
---
10/30/25
---
---
---
All
D
---
10/30/25 - 8:22:20 pm
8
    
 
LE NGUYEN QUOC
O
JS
---
351,684
---
10/30/25
---
---
---
All
D
R
10/30/25 - 8:18:21 pm
9
    
 
LE NGUYEN QUOC
O
JS
---
13,694
---
10/30/25
---
---
---
All
I
R
10/30/25 - 8:18:21 pm
10
    
 
LE NGUYEN QUOC
O
JB
---
50,000
---
10/30/25
---
---
351,684
16.6
D
R
10/30/25 - 8:18:21 pm
11
    
 
SARENA FRANCIS WILLARD
COO
JS
---
75,310
---
10/30/25
---
---
---
All
D
R
10/30/25 - 8:10:56 pm
12
    
 
MANSBACH HARRY H
O
JS
---
352,656
---
10/30/25
---
---
---
All
D
R
10/30/25 - 8:10:12 pm
13
    
 
MANSBACH HARRY H
O
JB
---
50,000
---
10/30/25
---
---
352,656
16.5
D
R
10/30/25 - 8:10:12 pm
14
    
 
MARTINS RYAN
CFO
OB
$256,469
80,799
---
10/22/25
$3.11
$4.44
339,295
31.3
D
---
10/23/25 - 5:10:23 pm
15
    
 
SARENA FRANCIS WILLARD
COO
JS
$58,233
6,185
8/1/25
8/5/25
$9.16
$9.69
74,231
-7.7
D
R
8/5/25 - 8:10:57 pm
16
    
 
LE NGUYEN QUOC
O
JS
$4,782
522
---
8/1/25
---
$9.16
13,694
-3.7
I
R
8/5/25 - 8:14:06 pm
17
    
 
LE NGUYEN QUOC
O
JS
$70,349
7,680
---
8/1/25
---
$9.16
301,684
-2.5
D
R
8/5/25 - 8:14:06 pm
18
    
 
MANSBACH HARRY H
O
JS
$70,349
7,680
---
8/1/25
---
$9.16
302,656
-2.5
D
R
8/5/25 - 8:14:01 pm
19
    
 
MARTINS RYAN
CFO
JS
$70,349
7,680
---
8/1/25
---
$9.16
253,496
-2.9
D
R
8/5/25 - 8:11:05 pm
20
    
 
PALEKAR ROHAN
CEO,DIR
JS
$511,458
55,836
---
8/1/25
---
$9.16
808,070
-6.5
D
R
8/5/25 - 8:06:54 pm
21
    
 
LE NGUYEN QUOC
O
AS
$115,280
10,461
---
7/15/25
---
$11.02
309,364
-3.3
D
10b
7/17/25 - 6:20:29 pm
22
    
 
MARTINS RYAN
CFO
JS
$81,751
8,498
---
6/12/25
---
$9.62
261,176
-3.2
D
R
6/13/25 - 6:30:08 pm
23
    
 
MANSBACH HARRY H
O
JS
$81,751
8,498
---
6/12/25
---
$9.62
310,336
-2.7
D
R
6/13/25 - 6:30:06 pm
24
    
 
LE NGUYEN QUOC
O
JS
$5,137
534
---
6/12/25
---
$9.62
14,216
-3.6
I
R
6/13/25 - 6:30:05 pm
25
    
 
LE NGUYEN QUOC
O
JS
$81,751
8,498
---
6/12/25
---
$9.62
319,825
-2.6
D
R
6/13/25 - 6:30:05 pm
26
    
 
LE NGUYEN QUOC
O
AS
$91,208
15,329
---
4/15/25
---
$5.95
328,323
-4.5
D
10b
4/17/25 - 4:05:16 pm
27
    
 
LE NGUYEN QUOC
O
JS
$11,099
1,050
---
2/17/25
---
$10.57
343,652
-0.3
D
R
2/19/25 - 4:01:10 pm
28
    
 
PALEKAR ROHAN
CEO,DIR
JS
$34,342
3,249
---
2/17/25
---
$10.57
862,240
-0.4
D
R
2/19/25 - 4:01:08 pm
29
    
 
MARTINS RYAN
CFO
JS
$8,245
780
---
2/17/25
---
$10.57
269,674
-0.3
D
R
2/19/25 - 4:01:07 pm
30
    
 
MANSBACH HARRY H
O
JS
$11,099
1,050
---
2/17/25
---
$10.57
318,834
-0.3
D
R
2/19/25 - 4:01:05 pm
31
    
 
PALEKAR ROHAN
CEO,DIR
JS
$102,074
8,946
---
2/9/25
---
$11.41
864,692
-1.0
D
R
2/11/25 - 4:01:08 pm
32
    
 
MARTINS RYAN
CFO
JS
$43,677
3,828
---
2/9/25
---
$11.41
270,454
-1.4
D
R
2/11/25 - 4:01:06 pm
33
    
 
LE NGUYEN QUOC
O
JS
$43,278
3,793
---
2/9/25
---
$11.41
344,702
-1.1
D
R
2/11/25 - 4:01:05 pm
34
    
 
MANSBACH HARRY H
O
JS
$43,552
3,817
---
2/9/25
---
$11.41
319,884
-1.2
D
R
2/11/25 - 4:01:03 pm
35
    
 
LE NGUYEN QUOC
O
JB
$84,000
8,750
---
2/1/25
---
$9.60
14,750
145.8
I
R
2/19/25 - 4:01:10 pm
36
    
 
MARTINS RYAN
CFO
JS
$32,045
3,338
---
2/1/25
---
$9.60
274,282
-1.2
D
R
2/4/25 - 9:35:09 pm
37
    
 
MARTINS RYAN
CFO
JB
---
80,000
---
2/1/25
---
---
277,620
40.5
D
R
2/4/25 - 9:35:09 pm
38
    
 
LE NGUYEN QUOC
O
JS
$32,045
3,338
---
2/1/25
---
$9.60
348,495
-0.9
D
R
2/4/25 - 9:34:50 pm
39
    
 
LE NGUYEN QUOC
O
JB
---
80,000
---
2/1/25
---
---
351,833
29.4
D
R
2/4/25 - 9:34:50 pm
40
    
 
PALEKAR ROHAN
CEO,DIR
JS
$92,141
9,598
---
2/1/25
---
$9.60
873,638
-1.1
D
R
2/4/25 - 9:32:31 pm
41
    
 
PALEKAR ROHAN
CEO,DIR
JB
---
412,000
---
2/1/25
---
---
883,236
87.4
D
R
2/4/25 - 9:32:31 pm
42
    
 
MANSBACH HARRY H
O
JS
$32,045
3,338
---
2/1/25
---
$9.60
323,701
-1.0
D
R
2/4/25 - 9:32:30 pm
43
    
 
MANSBACH HARRY H
O
JB
---
80,000
---
2/1/25
---
---
327,039
32.4
D
R
2/4/25 - 9:32:30 pm
44
    
 
SARENA FRANCIS WILLARD
COO
JB
---
53,750
---
2/1/25
---
---
78,750
215.0
D
R
2/4/25 - 9:29:06 pm
45
1y
11
18%
10%
61
RA CAPITAL MANAGEMENT L P
DIR,BO
JB*
$49,999,992
5,714,285
---
1/30/25
---
$8.75
19,554,320
41.3
I
---
2/3/25 - 5:38:09 pm
46
9m
2
100%
60%
2
MCWHERTER CHARLES
DIR
B
$99,850
15,000
1/21/25
1/22/25
$6.55
$6.71
25,000
150.0
D
---
1/23/25 - 7:38:31 pm
47
    
 
LE NGUYEN QUOC
O
AS
$71,150
10,963
---
1/15/25
---
$6.49
271,833
-3.9
D
10b
1/17/25 - 4:01:05 pm
48
    
 
LE NGUYEN QUOC
O
JB
---
6,000
---
12/12/24
---
---
6,000
New
I
R
2/19/25 - 4:01:10 pm
49
    
 
MANSBACH HARRY H
O
JB
---
95,000
---
12/12/24
---
---
247,039
62.5
D
R
12/16/24 - 6:11:30 am
50
    
 
LE NGUYEN QUOC
O
JB
---
95,000
---
12/12/24
---
---
282,796
50.6
D
R
12/16/24 - 6:10:57 am
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