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Transaction Types Key To InsiderInsights' Infobase
 B  AB  JB*  OB  OE*  OE
 S  AS  JS*  OS  OS*  3
 JB
 JS
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Detailed Insider History for:
TWIST BIOSCIENCE CORP: TWST
Price: 3/28/25 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
$40.36 $60.90 $27.41 $2,408 60 954 0.0% 16.7% 112.28% 2.16%
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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
$9,585
230
---
3/20/25
---
$41.68
111,662
-0.2
D
R
3/24/25 - 4:09:05 pm
2
    
 
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
3
    
 
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
4
    
 
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
5
    
 
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
6
    
 
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
7
    
 
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
8
    
 
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
9
    
 
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
10
    
 
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
11
    
 
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
12
1y
32
59%
57%
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
13
    
 
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
14
    
 
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
15
    
 
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
16
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
17
    
 
CRANDELL KEITH
DIR
JB
---
4,472
---
2/5/25
---
---
22,476
24.8
D
---
2/7/25 - 5:16:49 pm
18
    
 
JOHANNESSEN JAN
DIR
JB
---
4,472
---
2/5/25
---
---
21,903
25.7
D
---
2/7/25 - 4:05:17 pm
19
    
 
RAGUSA ROBERT P
DIR
JB
---
4,472
---
2/5/25
---
---
23,888
23.0
D
---
2/7/25 - 4:05:16 pm
20
    
 
STAROVASNIK MELISSA A
DIR
JB
---
4,472
---
2/5/25
---
---
21,627
26.1
D
---
2/7/25 - 4:05:12 pm
21
    
 
CHESS ROBERT
DIR
JB
---
4,472
---
2/5/25
---
---
21,113
26.9
D
---
2/7/25 - 4:05:10 pm
22
    
 
CHAN NELSON C
DIR
JB
---
4,472
---
2/5/25
---
---
28,156
18.9
D
---
2/7/25 - 4:05:05 pm
23
    
 
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
24
    
 
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
25
    
 
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
26
1y
32
59%
57%
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
27
    
 
CHO DENNIS
O
S
$39,778
806
---
2/3/25
---
$49.35
112,221
-0.7
D
R
2/5/25 - 4:15:07 pm
28
1y
32
59%
57%
1
FINN PATRICK JOHN
PR,COO
S
$121,501
2,422
---
1/23/25
---
$50.17
272,044
-0.9
D
R
1/27/25 - 4:05:10 pm
29
    
 
LAPONIS ADAM
CFO
S
$254,646
5,886
---
1/10/25
---
$43.26
110,096
-5.1
D
R
1/14/25 - 4:05:06 pm
30
1y
9
89%
-56%
2
CHESS ROBERT
DIR
AS
$250,000
5,000
---
1/7/25
---
$50.00
16,641
-23.1
D
10b
1/10/25 - 4:05:12 pm
31
    
 
CHO DENNIS
O
S
$6,565
144
---
1/3/25
---
$45.59
113,027
-0.1
D
R
1/7/25 - 5:47:30 pm
32
1y
32
59%
57%
1
FINN PATRICK JOHN
PR,COO
S
$10,440
229
---
1/3/25
---
$45.59
274,466
-0.1
D
R
1/7/25 - 5:47:08 pm
33
    
 
GREEN PAULA
VP,HR
S
$7,295
160
---
1/3/25
---
$45.59
133,273
-0.1
D
R
1/7/25 - 5:46:56 pm
34
    
 
LEPROUST EMILY M
CEO,DIR
S
$24,893
546
---
1/3/25
---
$45.59
672,518
-0.1
D
R
1/7/25 - 5:45:39 pm
35
    
 
CHO DENNIS
O
S
$14,189
316
---
12/20/24
---
$44.90
113,171
-0.3
D
R
12/26/24 - 4:05:09 pm
36
    
 
GREEN PAULA
VP,HR
S
$12,663
282
---
12/20/24
---
$44.90
133,433
-0.2
D
R
12/26/24 - 4:05:08 pm
37
    
 
LEPROUST EMILY M
CEO,DIR
S
$74,270
1,654
---
12/20/24
---
$44.90
673,064
-0.2
D
R
12/26/24 - 4:05:05 pm
38
    
 
CHO DENNIS
O
S
$6,225
133
---
12/16/24
---
$46.81
113,487
-0.1
D
R
12/18/24 - 4:05:08 pm
39
    
 
CHO DENNIS
O
S
$19,342
367
---
12/6/24
---
$52.70
113,620
-0.3
D
R
12/10/24 - 4:05:17 pm
40
    
 
GREEN PAULA
VP,HR
S
$45,325
860
---
12/6/24
---
$52.70
133,715
-0.6
D
R
12/10/24 - 4:05:11 pm
41
    
 
LEPROUST EMILY M
CEO,DIR
S
$116,792
2,216
---
12/6/24
---
$52.70
674,718
-0.3
D
R
12/10/24 - 4:05:10 pm
42
    
 
WERNER ROBERT F
CAO
S
$11,911
226
---
12/6/24
---
$52.70
53,043
-0.4
D
R
12/10/24 - 4:05:08 pm
43
1y
9
89%
-56%
2
CHESS ROBERT
DIR
OS
$181,696
3,504
---
12/5/24
$51.70
$52.45
21,641
-13.9
D
10b
12/30/24 - 4:55:32 pm
44
    
 
CHESS ROBERT
DIR
OE
$30,905
3,504
---
12/5/24
---
$8.82
25,145
16.2
D
10b
12/30/24 - 4:55:32 pm
45
    
 
LEPROUST EMILY M
CEO,DIR
JB
---
95,350
---
12/4/24
---
---
676,934
16.4
D
R
12/6/24 - 4:05:21 pm
46
    
 
FINN PATRICK JOHN
PR,COO
JB
---
53,634
---
12/4/24
---
---
274,695
24.3
D
R
12/6/24 - 4:05:20 pm
47
    
 
LAPONIS ADAM
CFO
JB
---
26,745
---
12/4/24
---
---
115,982
30.0
D
R
12/6/24 - 4:05:18 pm
48
    
 
GREEN PAULA
VP,HR
JB
---
20,428
---
12/4/24
---
---
134,575
17.9
D
R
12/6/24 - 4:05:17 pm
49
    
 
CHO DENNIS
O
JB
---
22,824
---
12/4/24
---
---
113,987
25.0
D
R
12/6/24 - 4:05:13 pm
50
    
 
WERNER ROBERT F
CAO
JB
---
8,438
---
12/4/24
---
---
53,269
18.8
D
R
12/6/24 - 4:05:12 pm
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