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 S  AS  JS*  OS  OS*  3
 JB
 JS
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Detailed Insider History for:
TWIST BIOSCIENCE CORP: TWST
Price: 10/24/25 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
$34.11 $55.33 $24.07 $2,059 60 1,811 0.0% 20.3% 118.41% 1.77%
Exch Sector Industry Sub-Industry
NasdaqGS Manufacturing Chemicals And Allied Products Biological Products, (No Disgnostic Substances)
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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
    
 
CHO DENNIS
O
S
$8,160
257
---
6/6/25
---
$31.75
105,061
-0.2
D
R
6/10/25 - 4:05:16 pm
2
    
 
GREEN PAULA
VP,HR
S
$27,083
853
---
6/6/25
---
$31.75
127,895
-0.7
D
R
6/10/25 - 4:05:15 pm
3
    
 
LEPROUST EMILY M
CEO,DIR
S
$68,898
2,170
---
6/6/25
---
$31.75
647,460
-0.3
D
R
6/10/25 - 4:05:10 pm
4
    
 
WERNER ROBERT F
CAO
S
$7,144
225
---
6/6/25
---
$31.75
49,966
-0.4
D
R
6/10/25 - 4:05:09 pm
5
    
 
WERNER ROBERT F
CAO
S
$23,264
839
---
5/23/25
---
$27.73
50,191
-1.6
D
R
5/28/25 - 4:05:09 pm
6
    
 
CHO DENNIS
O
S
$15,796
531
---
5/21/25
---
$29.75
105,318
-0.5
D
R
5/23/25 - 4:05:20 pm
7
    
 
GREEN PAULA
VP,HR
S
$18,800
632
---
5/21/25
---
$29.75
128,748
-0.5
D
R
5/23/25 - 4:05:19 pm
8
1y
39
64%
43%
1
FINN PATRICK JOHN
PR,COO
S
$55,835
1,877
---
5/21/25
---
$29.75
240,783
-0.8
D
R
5/23/25 - 4:05:18 pm
9
    
 
LEPROUST EMILY M
CEO,DIR
S
$83,351
2,802
---
5/21/25
---
$29.75
649,630
-0.4
D
R
5/23/25 - 4:05:16 pm
10
    
 
WERNER ROBERT F
CAO
S
$7,199
242
---
5/21/25
---
$29.75
51,030
-0.5
D
R
5/23/25 - 4:05:15 pm
11
    
 
LAPONIS ADAM
CFO
S
$27,843
936
---
5/21/25
---
$29.75
106,018
-0.9
D
R
5/23/25 - 4:05:12 pm
12
1y
39
64%
43%
1
FINN PATRICK JOHN
PR,COO
S
$646,260
20,000
---
5/8/25
---
$32.31
242,660
-7.6
D
---
5/12/25 - 4:05:15 pm
13
    
 
LEPROUST EMILY M
CEO,DIR
JS
---
3,000
---
5/8/25
---
---
652,432
-0.5
D
---
5/12/25 - 4:05:13 pm
14
    
 
CHO DENNIS
O
S
$163,590
5,000
---
5/7/25
---
$32.72
105,849
-4.5
D
---
5/9/25 - 4:05:06 pm
15
    
 
CHO DENNIS
O
S
$25,942
689
---
5/5/25
---
$37.65
110,849
-0.6
D
R
5/7/25 - 4:05:21 pm
16
1y
39
64%
43%
1
FINN PATRICK JOHN
PR,COO
S
$105,423
2,800
---
5/5/25
---
$37.65
262,660
-1.1
D
R
5/7/25 - 4:05:18 pm
17
    
 
GREEN PAULA
VP,HR
S
$41,454
1,101
---
5/5/25
---
$37.65
129,380
-0.8
D
R
5/7/25 - 4:05:16 pm
18
    
 
WERNER ROBERT F
CAO
S
$6,099
162
---
5/5/25
---
$37.65
51,272
-0.3
D
R
5/7/25 - 4:05:16 pm
19
    
 
LEPROUST EMILY M
CEO,DIR
S
$189,836
5,042
---
5/5/25
---
$37.65
655,432
-0.8
D
R
5/7/25 - 4:05:12 pm
20
1y
39
64%
43%
1
FINN PATRICK JOHN
PR,COO
S
$82,310
2,058
---
4/23/25
---
$39.99
265,460
-0.8
D
R
4/25/25 - 4:05:09 pm
21
    
 
CHO DENNIS
O
S
$4,803
124
---
4/2/25
---
$38.73
111,538
-0.1
D
R
4/4/25 - 4:05:10 pm
22
1y
39
64%
43%
1
FINN PATRICK JOHN
PR,COO
S
$7,979
206
---
4/2/25
---
$38.73
267,518
-0.1
D
R
4/4/25 - 4:05:09 pm
23
    
 
GREEN PAULA
VP,HR
S
$5,423
140
---
4/2/25
---
$38.73
130,481
-0.1
D
R
4/4/25 - 4:05:06 pm
24
    
 
LEPROUST EMILY M
CEO,DIR
S
$19,057
492
---
4/2/25
---
$38.73
660,474
-0.1
D
R
4/4/25 - 4:05:05 pm
25
    
 
CHO DENNIS
O
S
$9,585
230
---
3/20/25
---
$41.68
111,662
-0.2
D
R
3/24/25 - 4:09:05 pm
26
    
 
GREEN PAULA
VP,HR
S
$12,128
291
---
3/20/25
---
$41.68
130,621
-0.2
D
R
3/24/25 - 4:08:49 pm
27
    
 
LEPROUST EMILY M
CEO,DIR
S
$71,933
1,726
---
3/20/25
---
$41.68
660,966
-0.3
D
R
3/24/25 - 4:08:32 pm
28
    
 
CHO DENNIS
O
S
$3,684
92
---
3/14/25
---
$40.05
111,892
-0.1
D
R
3/18/25 - 4:05:07 pm
29
    
 
GREEN PAULA
VP,HR
S
$37,558
918
---
3/6/25
---
$40.91
130,912
-0.7
D
R
3/10/25 - 4:05:15 pm
30
    
 
CHO DENNIS
O
S
$11,333
277
---
3/6/25
---
$40.91
111,984
-0.2
D
R
3/10/25 - 4:05:14 pm
31
    
 
LEPROUST EMILY M
CEO,DIR
S
$98,273
2,402
---
3/6/25
---
$40.91
662,692
-0.4
D
R
3/10/25 - 4:05:11 pm
32
    
 
WERNER ROBERT F
CAO
S
$9,860
241
---
3/6/25
---
$40.91
51,434
-0.5
D
R
3/10/25 - 4:05:09 pm
33
    
 
WERNER ROBERT F
CAO
S
$38,209
916
---
2/24/25
---
$41.71
51,675
-1.7
D
R
2/25/25 - 4:05:25 pm
34
    
 
WERNER ROBERT F
CAO
JS*
$11,795
267
---
2/21/25
---
$44.18
52,591
-0.5
D
R
2/25/25 - 4:05:25 pm
35
    
 
CHO DENNIS
O
JS*
$23,237
526
---
2/21/25
---
$44.18
112,261
-0.5
D
R
2/25/25 - 4:05:17 pm
36
1y
39
64%
43%
1
FINN PATRICK JOHN
PR,COO
JS*
$81,242
1,839
---
2/21/25
---
$44.18
267,724
-0.7
D
R
2/25/25 - 4:05:16 pm
37
    
 
GREEN PAULA
VP,HR
JS*
$27,301
618
---
2/21/25
---
$44.18
131,830
-0.5
D
R
2/25/25 - 4:05:13 pm
38
    
 
LAPONIS ADAM
CFO
JS*
$40,554
918
---
2/21/25
---
$44.18
109,496
-0.8
D
R
2/25/25 - 4:05:11 pm
39
    
 
LEPROUST EMILY M
CEO,DIR
JS*
$123,254
2,790
---
2/21/25
---
$44.18
665,094
-0.4
D
R
2/25/25 - 4:05:09 pm
40
1y
9
89%
-56%
2
CHESS ROBERT
DIR
S
$156,217
2,940
---
2/7/25
---
$53.13
18,173
-13.9
D
R
2/11/25 - 4:05:09 pm
41
    
 
CRANDELL KEITH
DIR
JB
---
4,472
---
2/5/25
---
---
22,476
24.8
D
---
2/7/25 - 5:16:49 pm
42
    
 
JOHANNESSEN JAN
DIR
JB
---
4,472
---
2/5/25
---
---
21,903
25.7
D
---
2/7/25 - 4:05:17 pm
43
    
 
RAGUSA ROBERT P
DIR
JB
---
4,472
---
2/5/25
---
---
23,888
23.0
D
---
2/7/25 - 4:05:16 pm
44
    
 
STAROVASNIK MELISSA A
DIR
JB
---
4,472
---
2/5/25
---
---
21,627
26.1
D
---
2/7/25 - 4:05:12 pm
45
    
 
CHESS ROBERT
DIR
JB
---
4,472
---
2/5/25
---
---
21,113
26.9
D
---
2/7/25 - 4:05:10 pm
46
    
 
CHAN NELSON C
DIR
JB
---
4,472
---
2/5/25
---
---
28,156
18.9
D
---
2/7/25 - 4:05:05 pm
47
    
 
WERNER ROBERT F
CAO
S
$9,130
185
---
2/3/25
---
$49.35
52,858
-0.3
D
R
2/5/25 - 4:15:16 pm
48
    
 
LEPROUST EMILY M
CEO,DIR
S
$256,630
5,200
---
2/3/25
---
$49.35
667,318
-0.8
D
R
2/5/25 - 4:15:13 pm
49
    
 
GREEN PAULA
VP,HR
S
$62,134
1,259
---
2/3/25
---
$49.35
132,014
-0.9
D
R
2/5/25 - 4:15:11 pm
50
1y
39
64%
43%
1
FINN PATRICK JOHN
PR,COO
S
$140,406
2,845
---
2/3/25
---
$49.35
269,199
-1.0
D
R
2/5/25 - 4:15:08 pm
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