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Detailed Insider History for:
AMBARELLA INC: AMBA
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
$85.63 $93.44 $38.86 $3,655 43 756 0.0% 5.1% 85.28% 4.87%
Exch Sector Industry Sub-Industry
NasdaqGS Manufacturing Electronic And Other Electrical Equipment And Components, Except Computer Equipment Semiconductors & Related Devices
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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
    
 
JU CHI HONG
VP
S
$909,483
11,213
10/13/25
10/14/25
---
$80.96
158,874
-6.6
D
---
10/15/25 - 5:00:40 pm
2
    
 
SCHWARTING ELIZABETH M
DIR
S
$227,445
2,664
---
10/6/25
---
$85.38
7,314
-26.7
D
---
10/8/25 - 3:31:57 pm
3
    
 
YOUNG JOHN ALEXANDER
CFO
S
$203,817
2,566
---
9/17/25
---
$79.43
109,108
-2.3
D
R
9/19/25 - 5:05:01 pm
4
    
 
LEE CHAN W
COO
S
$154,650
1,947
---
9/17/25
---
$79.43
126,972
-1.5
D
R
9/19/25 - 5:04:52 pm
5
1y
82
37%
56%
1
KOHN LESLIE
CTO,DIR
S
$178,638
2,249
---
9/17/25
---
$79.43
977,428
-0.2
D
R
9/19/25 - 5:04:41 pm
6
    
 
JU CHI HONG
VP
S
$92,774
1,168
---
9/17/25
---
$79.43
170,087
-0.7
D
R
9/19/25 - 5:03:32 pm
7
1y
87
29%
64%
1
WANG FENG MING
CEO,DIR
S
$391,431
4,928
---
9/17/25
---
$79.43
788,929
-0.6
D
R
9/19/25 - 5:00:58 pm
8
1y
20
75%
-8%
1
CHEN YUN LUNG
VP,BD
S
$716,895
8,492
---
9/10/25
---
$84.42
61,651
-12.1
D
---
9/12/25 - 4:55:14 pm
9
    
 
BREITHAUPT CHANTELLE YVETTE
DIR
JB
---
2,498
---
9/2/25
---
---
4,940
102.3
D
R
9/4/25 - 6:45:23 pm
10
    
 
SCHWARTING ELIZABETH M
DIR
JB
---
2,498
---
9/2/25
---
---
9,978
33.4
D
R
9/4/25 - 6:45:13 pm
11
    
 
HON HSIAO WUEN
DIR
JB
---
2,498
---
9/2/25
---
---
30,776
8.8
D
R
9/4/25 - 6:45:03 pm
12
    
 
RICHARDSON DAVID JEFFREY
DIR
JB
---
2,498
---
9/2/25
---
---
5,029
98.7
D
R
9/4/25 - 6:44:49 pm
13
    
 
PAISLEY CHRISTOPHER B
DIR
JB
---
2,498
---
9/2/25
---
---
41,779
6.4
D
R
9/4/25 - 6:44:40 pm
14
    
 
HU CHENMING
DIR
JB
---
2,498
---
9/2/25
---
---
29,516
9.2
D
R
9/4/25 - 6:44:31 pm
15
1y
33
48%
20%
9
PAISLEY CHRISTOPHER B
DIR
AS
$62,580
1,000
---
6/25/25
---
$62.58
39,281
-2.5
D
10b
6/27/25 - 12:14:51 pm
16
    
 
YOUNG JOHN ALEXANDER
CFO
S
$127,253
2,435
---
6/17/25
---
$52.26
111,451
-2.1
D
R
6/20/25 - 4:16:51 pm
17
1y
106
53%
20%
1
DAY CHRISTOPHER
VP,SO
S
$17,873
342
---
6/17/25
---
$52.26
15,099
-2.2
D
R
6/20/25 - 4:16:43 pm
18
    
 
LEE CHAN W
COO
S
$83,668
1,601
---
6/17/25
---
$52.26
128,696
-1.2
D
R
6/20/25 - 4:16:33 pm
19
1y
82
37%
56%
1
KOHN LESLIE
CTO,DIR
S
$89,626
1,715
---
6/17/25
---
$52.26
979,677
-0.2
D
R
6/20/25 - 4:16:24 pm
20
    
 
JU CHI HONG
VP
S
$57,904
1,108
---
6/17/25
---
$52.26
171,032
-0.6
D
R
6/20/25 - 4:16:15 pm
21
1y
87
29%
64%
1
WANG FENG MING
CEO,DIR
S
$244,420
4,677
---
6/17/25
---
$52.26
793,634
-0.6
D
R
6/20/25 - 4:16:06 pm
22
1y
33
48%
20%
9
PAISLEY CHRISTOPHER B
DIR
AS
$27,750
500
---
3/25/25
---
$55.50
40,281
-1.2
D
10b
3/26/25 - 5:49:50 pm
23
    
 
YOUNG JOHN ALEXANDER
CFO
S
$115,707
2,103
---
3/18/25
---
$55.02
113,886
-1.8
D
R
3/20/25 - 4:44:45 pm
24
1y
106
53%
20%
1
DAY CHRISTOPHER
VP,SO
S
$26,355
479
---
3/18/25
---
$55.02
15,441
-3.0
D
R
3/20/25 - 4:44:35 pm
25
    
 
LEE CHAN W
COO
S
$80,769
1,468
---
3/18/25
---
$55.02
130,297
-1.1
D
R
3/20/25 - 4:43:48 pm
26
1y
82
37%
56%
1
KOHN LESLIE
CTO,DIR
S
$87,152
1,584
---
3/18/25
---
$55.02
981,392
-0.2
D
R
3/20/25 - 4:43:38 pm
27
    
 
JU CHI HONG
VP
S
$56,891
1,034
---
3/18/25
---
$55.02
172,140
-0.6
D
R
3/20/25 - 4:43:29 pm
28
1y
87
29%
64%
1
WANG FENG MING
CEO,DIR
S
$175,734
3,194
---
3/18/25
---
$55.02
798,311
-0.4
D
R
3/20/25 - 4:43:20 pm
29
    
 
SCHWARTING ELIZABETH M
DIR
JS
$23,591
422
---
3/17/25
---
$55.90
7,480
-5.3
D
---
3/18/25 - 4:51:39 pm
30
    
 
YOUNG JOHN ALEXANDER
CFO
S
$146,758
2,663
---
3/6/25
---
$55.11
115,755
-2.2
D
R
3/7/25 - 4:23:00 pm
31
1y
106
53%
20%
1
DAY CHRISTOPHER
VP,SO
S
$45,962
834
---
3/6/25
---
$55.11
15,686
-5.0
D
R
3/7/25 - 4:22:51 pm
32
    
 
LEE CHAN W
COO
S
$116,172
2,108
---
3/6/25
---
$55.11
131,531
-1.6
D
R
3/7/25 - 4:22:32 pm
33
1y
82
37%
56%
1
KOHN LESLIE
CTO,DIR
S
$127,635
2,316
---
3/6/25
---
$55.11
982,976
-0.2
D
R
3/7/25 - 4:22:21 pm
34
    
 
JU CHI HONG
VP
S
$102,449
1,859
---
3/6/25
---
$55.11
172,940
-1.1
D
R
3/7/25 - 4:22:05 pm
35
1y
87
29%
64%
1
WANG FENG MING
CEO,DIR
S
$226,171
4,104
---
3/6/25
---
$55.11
801,271
-0.5
D
R
3/7/25 - 4:21:57 pm
36
    
 
YOUNG JOHN ALEXANDER
CFO
JB
---
17,025
2/28/25
3/5/25
---
---
118,418
16.8
D
R
3/7/25 - 4:23:00 pm
37
    
 
DAY CHRISTOPHER
VP,SO
JB
---
1,990
---
3/5/25
---
---
16,520
13.7
D
R
3/7/25 - 4:22:51 pm
38
    
 
CHEN YUN LUNG
VP,BD
JB
---
8,117
2/28/25
3/5/25
---
---
70,143
13.1
D
R
3/7/25 - 4:22:41 pm
39
    
 
LEE CHAN W
COO
JB
---
23,721
2/28/25
3/5/25
---
---
133,639
21.6
D
R
3/7/25 - 4:22:32 pm
40
    
 
KOHN LESLIE
CTO,DIR
JB
---
25,616
2/28/25
3/5/25
---
---
985,292
2.7
D
R
3/7/25 - 4:22:21 pm
41
    
 
JU CHI HONG
VP
JB
---
17,161
2/28/25
3/5/25
---
---
174,799
10.9
D
R
3/7/25 - 4:22:05 pm
42
    
 
WANG FENG MING
CEO,DIR
JB
---
50,144
2/28/25
3/5/25
---
---
805,375
6.6
D
R
3/7/25 - 4:21:57 pm
43
    
 
BREITHAUPT CHANTELLE YVETTE
DIR
3
---
---
---
2/25/25
---
---
2,442
---
D
R
3/4/25 - 2:16:41 pm
44
    
 
LEE CHAN W
COO
AS
$153,110
2,000
1/15/25
1/16/25
$75.90
$77.21
109,918
-1.8
D
10b
1/17/25 - 4:38:37 pm
45
    
 
RICHARDSON DAVID JEFFREY
DIR
JS
---
1,648
---
1/15/25
---
---
2,531
-39.4
D
---
1/17/25 - 4:38:51 pm
46
    
 
RICHARDSON DAVID JEFFREY
DIR
JB
---
1,648
---
1/15/25
---
---
23,281
7.6
I
---
1/17/25 - 4:38:51 pm
47
    
 
LEE CHAN W
COO
AS
$223,300
3,000
1/10/25
1/14/25
$73.50
$75.68
111,918
-2.6
D
10b
1/14/25 - 4:42:17 pm
48
    
 
LEE CHAN W
COO
AS
$231,360
3,000
1/6/25
1/8/25
---
$73.48
114,918
-2.5
D
10b
1/8/25 - 7:09:37 pm
49
1y
106
53%
20%
1
DAY CHRISTOPHER
VP,SO
S
$97,394
1,247
---
1/3/25
---
$78.10
14,530
-7.9
D
---
1/7/25 - 4:53:58 pm
50
    
 
LEE CHAN W
COO
AS
$148,380
2,000
1/2/25
1/3/25
$73.32
$75.06
117,918
-1.7
D
10b
1/3/25 - 4:42:42 pm
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