United States Semiconductors & Semiconductor Equipment

Ambarella Inc (AMBA)

Track

Over the past 90 days, Ambarella Inc. insiders have engaged in 23 transactions, all of which were sales, resulting in a net negative value of approximately $2.52 million. Key executives, including the CEO and CFO, have consistently offloaded shares. These transactions follow a period where the stock price appreciated by 44.3%.
Ticker: AMBA Exchange: NSM
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Top insiders
Trades
Chen Yun-Lung
VP, Business Dev. & Marketing
1 sale — total 100,000 USD
Sale 9 Jul 2026
Value US$2,626,080.15 | Price 260.17 | Shares 95,501
Proposed sale 9 Jul 2026
Value US$650,000.75 | Price 462.45 | Shares 42,457
Sale 1 Jul 2026
Value US$100,000.00 | Price 88.84 | Shares 1,000
Planned sale 1 Jul 2026
Value US$100,000.00 | Price 90.08 | Shares 1,000
Proposed sale 1 Jul 2026
Value US$100,000.00 | Price 88.84 | Shares 1,000
Proposed sale 1 Jul 2026
Value US$100,000.00 | Price 85.80 | Shares 1,000
Planned sale 26 Jun 2026
Value US$100,000.00 | Price 62.01 | Shares 1,000
Proposed sale 26 Jun 2026
Value US$100,000.00 | Price 62.01 | Shares 1,000
Planned sale 17 Jun 2026
Value US$123,712.06 | Price 66.98 | Shares 1,847
Sale 17 Jun 2026
Value US$216,233.82 | Price 67.87 | Shares 3,186
Sale 17 Jun 2026
Value US$200,284.37 | Price 67.87 | Shares 2,951
Sale 17 Jun 2026
Value US$421,065.48 | Price 67.87 | Shares 6,204
Sale 17 Jun 2026
Value US$136,893.79 | Price 67.87 | Shares 2,017
Proposed sale 17 Jun 2026
Value US$123,970.64 | Price 67.12 | Shares 1,847
Sale 12 Jun 2026
Value US$660,943.36 | Price 67.06 | Shares 9,856
Proposed sale 12 Jun 2026
Value US$660,946.32 | Price 67.06 | Shares 9,856
Planned sale 26 May 2026
Value US$38,400.00 | Price 96.00 | Shares 400
Planned sale 26 May 2026
Value US$842,245.60 | Price 92.05 | Shares 9,150
Planned sale 26 May 2026
Value US$553,306.31 | Price 91.23 | Shares 6,065
Planned sale 26 May 2026
Value US$1,562,202.74 | Price 90.38 | Shares 17,285
Proposed sale 26 May 2026
Value US$2,845,375.00 | Price 87.55 | Shares 32,500
Proposed sale 26 May 2026
Value US$35,020.00 | Price 87.55 | Shares 400
Planned sale 21 Apr 2026
Value US$118,260.00 | Price 60.00 | Shares 1,971
Proposed sale 21 Apr 2026
Value US$116,840.88 | Price 59.28 | Shares 1,971
Sale 19 Mar 2026
Value US$164,477.32 | Price 54.14 | Shares 3,038
Sale 19 Mar 2026
Value US$197,123.74 | Price 54.14 | Shares 3,641
Sale 19 Mar 2026
Value US$437,613.62 | Price 54.14 | Shares 8,083
Sale 19 Mar 2026
Value US$116,671.70 | Price 54.14 | Shares 2,155
Sale 17 Mar 2026
Value US$241,528.29 | Price 52.77 | Shares 4,577
Sale 17 Mar 2026
Value US$355,089.33 | Price 52.77 | Shares 6,729
Sale 17 Mar 2026
Value US$1,001,363.52 | Price 52.77 | Shares 18,976
Sale 17 Mar 2026
Value US$249,549.33 | Price 52.77 | Shares 4,729
Planned sale 2 Mar 2026
Value US$739,540.14 | Price 61.42 | Shares 12,040
Planned sale 2 Mar 2026
Value US$1,977,226.24 | Price 60.91 | Shares 32,460
Planned sale 2 Mar 2026
Value US$154,769.94 | Price 59.53 | Shares 2,600
Planned sale 2 Mar 2026
Value US$111,663.00 | Price 58.77 | Shares 1,900
Planned sale 2 Mar 2026
Value US$56,832.00 | Price 56.83 | Shares 1,000
Proposed sale 2 Mar 2026
Value US$3,017,000.00 | Price 60.34 | Shares 50,000
Sale 5 Jan 2026
Value US$584,105.42 | Price 75.58 | Shares 7,728
Proposed sale 5 Jan 2026
Value US$584,102.65 | Price 75.58 | Shares 7,728
Sale 30 Dec 2025
Value US$264,754.80 | Price 70.32 | Shares 3,765
Proposed sale 30 Dec 2025
Value US$558,161.15 | Price 70.25 | Shares 7,945
Proposed sale 26 Dec 2025
Value US$36,090.00 | Price 72.18 | Shares 500
Sale 26 Dec 2025
Value US$36,090.00 | Price 72.18 | Shares 500
Sale 18 Dec 2025
Value US$276,591.36 | Price 72.96 | Shares 3,791
Proposed sale 18 Dec 2025
Value US$276,591.36 | Price 72.96 | Shares 3,791
Sale 17 Dec 2025
Value US$355,509.00 | Price 71.82 | Shares 4,950
Sale 17 Dec 2025
Value US$172,798.92 | Price 71.82 | Shares 2,406
Sale 17 Dec 2025
Value US$185,223.78 | Price 71.82 | Shares 2,579
Sale 17 Dec 2025
Value US$96,382.44 | Price 71.82 | Shares 1,342
Sale 16 Dec 2025
Value US$45,163.31 | Price 72.38 | Shares 624
Proposed sale 16 Dec 2025
Value US$45,163.31 | Price 72.38 | Shares 624
Proposed sale 2 Dec 2025
Value US$10,738,845.00 | Price 71.59 | Shares 150,000
Sale 14 Oct 2025
Value US$498,389.76 | Price 80.96 | Shares 6,156
Proposed sale 14 Oct 2025
Value US$498,389.76 | Price 80.96 | Shares 6,156
Sale 13 Oct 2025
Value US$411,093.14 | Price 81.29 | Shares 5,057
Proposed sale 13 Oct 2025
Value US$411,093.14 | Price 81.29 | Shares 5,057
Sale 6 Oct 2025
Value US$227,444.86 | Price 85.38 | Shares 2,664
Proposed sale 6 Oct 2025
Value US$227,444.59 | Price 85.38 | Shares 2,664
Proposed sale 22 Sep 2025
Value US$89,000.00 | Price 89.00 | Shares 1,000
Proposed sale 19 Sep 2025
Value US$84,000.00 | Price 84.00 | Shares 1,000
Proposed sale 18 Sep 2025
Value US$68,392.50 | Price 82.50 | Shares 829
Planned sale 17 Sep 2025
Value US$203,817.38 | Price 79.43 | Shares 2,566
Sale 17 Sep 2025
Value US$178,638.07 | Price 79.43 | Shares 2,249
Planned sale 17 Sep 2025
Value US$92,774.24 | Price 79.43 | Shares 1,168
Planned sale 17 Sep 2025
Value US$154,650.21 | Price 79.43 | Shares 1,947
Planned sale 17 Sep 2025
Value US$391,431.04 | Price 79.43 | Shares 4,928
Sale 10 Sep 2025
Value US$716,894.64 | Price 84.42 | Shares 8,492
Proposed sale 10 Sep 2025
Value US$716,894.64 | Price 84.42 | Shares 8,492
Proposed sale 8 Sep 2025
Value US$150,620.00 | Price 85.00 | Shares 1,772
Proposed sale 14 Jul 2025
Value US$194,289.32 | Price 66.83 | Shares 2,907
Planned sale 25 Jun 2025
Value US$62,580.00 | Price 62.58 | Shares 1,000
Proposed sale 25 Jun 2025
Value US$62,580.00 | Price 62.58 | Shares 1,000
Sale 17 Jun 2025
Value US$244,420.02 | Price 52.26 | Shares 4,677
Sale 17 Jun 2025
Value US$57,904.08 | Price 52.26 | Shares 1,108
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-07-10 2026-07-09 S Sale
3.6
Chen Yun-Lung

VP, Business Dev. & Marketing

Officer
95,501 -34.2%
260.17
US$2,626,080 		95,501 -34.2% 260.17 US$2,626,080
2026-07-09 2026-07-09 PrS Proposed sale
3.6
YUN-LUNG CHEN

Officer

Officer
42,457
462.45
US$650,001 		42,457 462.45 US$650,001
2026-07-02 2026-07-01 S Sale
3.9
Ju Chi-Hong

Senior VP, Systems & GM

Officer
30,509 -16.1%
183.47
US$1,905,143 		30,509 -16.1% 183.47 US$1,905,143
2026-07-02 2026-07-01 PlS Planned sale
3.5
Wang Feng-Ming

CEO

Executive Director
1,000 -2.1%
90.08
US$100,000 		1,000 -2.1% 90.08 US$100,000
2026-07-01 2026-07-01 PrS Proposed sale
3.9
CHIHONG JOHN JU

Officer

Officer
1,000
88.84
US$100,000 		1,000 88.84 US$100,000
2026-07-01 2026-07-01 PrS Proposed sale
3.5
FENG-MING WANG

Director; Officer

Executive Director
1,000
85.80
US$100,000 		1,000 85.80 US$100,000
2026-06-30 2026-06-26 PlS Planned sale
2.5
PAISLEY CHRISTOPHER B
Non-Executive Director
1,000 -0.6%
62.01
US$100,000 		1,000 -0.6% 62.01 US$100,000
2026-06-26 2026-06-26 PrS Proposed sale
2.5
PAISLEY CHRISTOPHER B

Director

Non-Executive Director
1,000
62.01
US$100,000 		1,000 62.01 US$100,000
2026-06-18 2026-06-17 PlS Planned sale
3.2
Young John Alexander

CFO

Officer
1,847 -1.6%
66.98
US$123,712 		1,847 -1.6% 66.98 US$123,712
2026-06-18 2026-06-17 S Sale
3.2
Young John Alexander

CFO

Officer
3,186 -2.7%
67.87
US$216,234 		3,186 -2.7% 67.87 US$216,234
2026-06-18 2026-06-17 S Sale
3.9
Lee Chan W

Chief Operations Officer

Officer
2,951 -1.8%
67.87
US$200,284 		2,951 -1.8% 67.87 US$200,284
2026-06-18 2026-06-17 S Sale
3.5
Wang Feng-Ming

CEO

Executive Director
6,204 -0.8%
67.87
US$421,065 		6,204 -0.8% 67.87 US$421,065
2026-06-18 2026-06-17 S Sale
3.9
Ju Chi-Hong

Senior VP, Systems & GM

Officer
2,017 -1.2%
67.87
US$136,894 		2,017 -1.2% 67.87 US$136,894
2026-06-17 2026-06-17 PrS Proposed sale
3.2
JOHN YOUNG

Officer

Officer
1,847
67.12
US$123,971 		1,847 67.12 US$123,971
2026-06-16 2026-06-12 S Sale
3.6
Chen Yun-Lung

VP, Business Development and

Officer
9,856 -12.9%
67.06
US$660,943 		9,856 -12.9% 67.06 US$660,943
2026-06-12 2026-06-12 PrS Proposed sale
3.6
YUN-LUNG CHEN

Officer

Officer
9,856
67.06
US$660,946 		9,856 67.06 US$660,946
2026-05-28 2026-05-26 PlS Planned sale
3.2
Young John Alexander

CFO

Officer
400 -0.3%
96.00
US$38,400 		400 -0.3% 96.00 US$38,400
2026-05-28 2026-05-26 PlS Planned sale
3.5
Wang Feng-Ming

CEO

Executive Director
9,150 -1.1%
92.05
US$842,246 		9,150 -1.1% 92.05 US$842,246
2026-05-28 2026-05-26 PlS Planned sale
3.5
Wang Feng-Ming

CEO

Executive Director
6,065 -0.7%
91.23
US$553,306 		6,065 -0.7% 91.23 US$553,306
2026-05-28 2026-05-26 PlS Planned sale
3.5
Wang Feng-Ming

CEO

Executive Director
17,285 -2.1%
90.38
US$1,562,203 		17,285 -2.1% 90.38 US$1,562,203
2026-05-26 2026-05-26 PrS Proposed sale
3.5
FENG-MING WANG

Director; Officer

Executive Director
32,500
87.55
US$2,845,375 		32,500 87.55 US$2,845,375
2026-05-26 2026-05-26 PrS Proposed sale
3.2
JOHN YOUNG

Officer

Officer
400
87.55
US$35,020 		400 87.55 US$35,020
2026-04-22 2026-04-21 PlS Planned sale
3.2
Young John Alexander

CFO

Officer
1,971 -1.6%
60.00
US$118,260 		1,971 -1.6% 60.00 US$118,260
2026-04-21 2026-04-21 PrS Proposed sale
3.2
JOHN YOUNG

Officer

Officer
1,971
59.28
US$116,841 		1,971 59.28 US$116,841
2026-03-19 2026-03-19 S Sale
3.2
Young John Alexander

CFO

Officer
3,038 -2.5%
54.14
US$164,477 		3,038 -2.5% 54.14 US$164,477
2026-03-19 2026-03-19 S Sale
3.9
Lee Chan W

Chief Operations Officer

Officer
3,641 -2.2%
54.14
US$197,124 		3,641 -2.2% 54.14 US$197,124
2026-03-19 2026-03-19 S Sale
3.5
Wang Feng-Ming

CEO

Executive Director
8,083 -1.0%
54.14
US$437,614 		8,083 -1.0% 54.14 US$437,614
2026-03-19 2026-03-19 S Sale
3.9
Ju Chi-Hong

Senior VP, Systems & GM, Asia

Officer
2,155 -1.3%
54.14
US$116,672 		2,155 -1.3% 54.14 US$116,672
2026-03-19 2026-03-17 S Sale
3.2
Young John Alexander

CFO

Officer
4,577 -3.8%
52.77
US$241,528 		4,577 -3.8% 52.77 US$241,528
2026-03-19 2026-03-17 S Sale
3.9
Lee Chan W

Chief Operations Officer

Officer
6,729 -4.1%
52.77
US$355,089 		6,729 -4.1% 52.77 US$355,089
2026-03-19 2026-03-17 S Sale
3.5
Wang Feng-Ming

CEO

Executive Director
18,976 -2.2%
52.77
US$1,001,364 		18,976 -2.2% 52.77 US$1,001,364
2026-03-19 2026-03-17 S Sale
3.9
Ju Chi-Hong

Senior VP, Systems & GM, Asia

Officer
4,729 -2.8%
52.77
US$249,549 		4,729 -2.8% 52.77 US$249,549
2026-03-04 2026-03-02 PlS Planned sale
3.5
Wang Feng-Ming

CEO

Executive Director
12,040 -1.5%
61.42
US$739,540 		12,040 -1.5% 61.42 US$739,540
2026-03-04 2026-03-02 PlS Planned sale
3.5
Wang Feng-Ming

CEO

Executive Director
32,460 -4.0%
60.91
US$1,977,226 		32,460 -4.0% 60.91 US$1,977,226
2026-03-04 2026-03-02 PlS Planned sale
3.5
Wang Feng-Ming

CEO

Executive Director
2,600 -0.3%
59.53
US$154,770 		2,600 -0.3% 59.53 US$154,770
2026-03-04 2026-03-02 PlS Planned sale
3.5
Wang Feng-Ming

CEO

Executive Director
1,900 -0.2%
58.77
US$111,663 		1,900 -0.2% 58.77 US$111,663
2026-03-04 2026-03-02 PlS Planned sale
3.5
Wang Feng-Ming

CEO

Executive Director
1,000 -0.1%
56.83
US$56,832 		1,000 -0.1% 56.83 US$56,832
2026-03-02 2026-03-02 PrS Proposed sale
3.5
FENG-MING WANG

Director; Officer

Executive Director
50,000
60.34
US$3,017,000 		50,000 60.34 US$3,017,000
2026-01-07 2026-01-05 S Sale
3.9
Ju Chi-Hong

Senior VP, Systems & GM, Asia

Officer
7,728 -5.0%
75.58
US$584,105 		7,728 -5.0% 75.58 US$584,105
2026-01-05 2026-01-05 PrS Proposed sale
3.9
CHIHONG JOHN JU

Officer

Officer
7,728
75.58
US$584,103 		7,728 75.58 US$584,103
2025-12-31 2025-12-30 S Sale
3.9
Ju Chi-Hong

Senior VP, Systems & GM, Asia

Officer
3,765 -2.4%
70.32
US$264,755 		3,765 -2.4% 70.32 US$264,755
2025-12-30 2025-12-30 PrS Proposed sale
3.9
CHIHONG JOHN JU

Officer

Officer
7,945
70.25
US$558,161 		7,945 70.25 US$558,161
2025-12-29 2025-12-26 PrS Proposed sale
2.5
PAISLEY CHRISTOPHER B

Director

Non-Executive Director
500
72.18
US$36,090 		500 72.18 US$36,090
2025-12-29 2025-12-26 S Sale
2.5
PAISLEY CHRISTOPHER B
Non-Executive Director
500 -1.2%
72.18
US$36,090 		500 -1.2% 72.18 US$36,090
2025-12-19 2025-12-18 S Sale
3.2
Young John Alexander

CFO

Officer
3,791 -3.6%
72.96
US$276,591 		3,791 -3.6% 72.96 US$276,591
2025-12-18 2025-12-18 PrS Proposed sale
3.2
JOHN A YOUNG

Officer

Officer
3,791
72.96
US$276,591 		3,791 72.96 US$276,591
2025-12-19 2025-12-17 S Sale
3.5
Wang Feng-Ming

CEO

Executive Director
4,950 -0.6%
71.82
US$355,509 		4,950 -0.6% 71.82 US$355,509
2025-12-19 2025-12-17 S Sale
3.9
Lee Chan W

Chief Operations Officer

Officer
2,406 -1.9%
71.82
US$172,799 		2,406 -1.9% 71.82 US$172,799
2025-12-19 2025-12-17 S Sale
3.2
Young John Alexander

CFO

Officer
2,579 -2.4%
71.82
US$185,224 		2,579 -2.4% 71.82 US$185,224
2025-12-19 2025-12-17 S Sale
3.9
Ju Chi-Hong

Senior VP, Systems & GM, Asia

Officer
1,342 -0.8%
71.82
US$96,382 		1,342 -0.8% 71.82 US$96,382
2025-12-18 2025-12-16 S Sale
3.7
Schwarting Elizabeth M
Non-Executive Director
624 -8.5%
72.38
US$45,163 		624 -8.5% 72.38 US$45,163
2025-12-16 2025-12-16 PrS Proposed sale
3.7
ELIZABETH M SCHWARTING

Director

Non-Executive Director
624
72.38
US$45,163 		624 72.38 US$45,163
2025-12-02 2025-12-02 PrS Proposed sale
3.7
LESLIE KOHN

Officer

Officer
150,000
71.59
US$10,738,845 		150,000 71.59 US$10,738,845
2025-10-15 2025-10-14 S Sale
3.9
Ju Chi-Hong

Senior VP, Systems & GM, Asia

Officer
6,156 -3.7%
80.96
US$498,390 		6,156 -3.7% 80.96 US$498,390
2025-10-14 2025-10-14 PrS Proposed sale
3.9
CHIHONG JOHN JU

Officer

Officer
6,156
80.96
US$498,390 		6,156 80.96 US$498,390
2025-10-15 2025-10-13 S Sale
3.9
Ju Chi-Hong

Senior VP, Systems & GM, Asia

Officer
5,057 -3.0%
81.29
US$411,093 		5,057 -3.0% 81.29 US$411,093
2025-10-14 2025-10-13 PrS Proposed sale
3.9
CHIHONG JOHN JU

Officer

Officer
5,057
81.29
US$411,093 		5,057 81.29 US$411,093
2025-10-08 2025-10-06 S Sale
3.7
Schwarting Elizabeth M
Non-Executive Director
2,664 -26.7%
85.38
US$227,445 		2,664 -26.7% 85.38 US$227,445
2025-10-06 2025-10-06 PrS Proposed sale
3.7
ELIZABETH M SCHWARTING

Director

Non-Executive Director
2,664
85.38
US$227,445 		2,664 85.38 US$227,445
2025-09-22 2025-09-22 PrS Proposed sale
3.8
CHRISTOPHER DAY

Officer

Officer
1,000
89.00
US$89,000 		1,000 89.00 US$89,000
2025-09-19 2025-09-19 PrS Proposed sale
3.8
CHRISTOPHER DAY

Officer

Officer
1,000
84.00
US$84,000 		1,000 84.00 US$84,000
2025-09-18 2025-09-18 PrS Proposed sale
3.8
CHRISTOPHER DAY

Officer

Officer
829
82.50
US$68,392 		829 82.50 US$68,392
2025-09-19 2025-09-17 PlS Planned sale
3.2
Young John Alexander

CFO

Officer
2,566 -2.3%
79.43
US$203,817 		2,566 -2.3% 79.43 US$203,817
2025-09-19 2025-09-17 S Sale
3.7
Kohn Leslie

Chief Technology Officer

Executive Director
2,249 -0.2%
79.43
US$178,638 		2,249 -0.2% 79.43 US$178,638
2025-09-19 2025-09-17 PlS Planned sale
3.9
Ju Chi-Hong

Sr. Vice President, Systems

Officer
1,168 -0.7%
79.43
US$92,774 		1,168 -0.7% 79.43 US$92,774
2025-09-19 2025-09-17 PlS Planned sale
3.9
Lee Chan W

Chief Operating Officer

Officer
1,947 -1.5%
79.43
US$154,650 		1,947 -1.5% 79.43 US$154,650
2025-09-19 2025-09-17 PlS Planned sale
3.5
Wang Feng-Ming

CEO

Executive Director
4,928 -0.6%
79.43
US$391,431 		4,928 -0.6% 79.43 US$391,431
2025-09-12 2025-09-10 S Sale
3.6
Chen Yun-Lung

VP, Business Development

Officer
8,492 -12.1%
84.42
US$716,895 		8,492 -12.1% 84.42 US$716,895
2025-09-10 2025-09-10 PrS Proposed sale
3.6
YUN-LUNG CHEN

Officer

Officer
8,492
84.42
US$716,895 		8,492 84.42 US$716,895
2025-09-08 2025-09-08 PrS Proposed sale
3.8
CHRISTOPHER DAY

Officer

Officer
1,772
85.00
US$150,620 		1,772 85.00 US$150,620
2025-07-14 2025-07-14 PrS Proposed sale
3.8
CHRISTOPHER DAY

Officer

Officer
2,907
66.83
US$194,289 		2,907 66.83 US$194,289
2025-06-27 2025-06-25 PlS Planned sale
2.5
PAISLEY CHRISTOPHER B
Non-Executive Director
1,000 -2.5%
62.58
US$62,580 		1,000 -2.5% 62.58 US$62,580
2025-06-25 2025-06-25 PrS Proposed sale
2.5
PAISLEY CHRISTOPHER B

Director

Non-Executive Director
1,000
62.58
US$62,580 		1,000 62.58 US$62,580
2025-06-20 2025-06-17 S Sale
3.5
Wang Feng-Ming

CEO

Executive Director
4,677 -0.6%
52.26
US$244,420 		4,677 -0.6% 52.26 US$244,420
2025-06-20 2025-06-17 S Sale
3.9
Ju Chi-Hong

Sr. Vice President, Systems

Officer
1,108 -0.6%
52.26
US$57,904 		1,108 -0.6% 52.26 US$57,904
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