Dudediligence.

Ambarella, Inc

AMBANASDAQ · Semiconductors & Related Devices
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Last 12 months

Sales planned on beside the trades reported on , and whether each names a .

Planned ·

$22.9M

20 notices · 312,979 sh

Oct 2025 to Oct 2026

Reported ·

$14.2M

36 sales · 0 buys

Oct 2025 to Jun 2026

The two figures cover different periods.

12 of 36 reported sales carry the 10b5-1 box. Together they are 0.48% of the shares on issue.

PLANNED · FORM 144Oct 2025 to Oct 2026REPORTED · FORM 4Oct 2025 to Jun 2026N2025DJ2026FMAMJJASO2026-09-25: PAISLEY CHRISTOPHER B, Form 1442026-09-18: JOHN YOUNG, Form 1442026-07-09: YUN-LUNG CHEN, Form 1442026-07-01: CHIHONG JOHN JU, Form 1442026-07-01: FENG-MING WANG, Form 1442026-06-26: PAISLEY CHRISTOPHER B, Form 1442026-06-17: JOHN YOUNG, Form 1442026-06-12: YUN-LUNG CHEN, Form 1442026-05-26: FENG-MING WANG, Form 1442026-05-26: JOHN YOUNG, Form 1442026-04-21: JOHN YOUNG, Form 1442026-03-02: FENG-MING WANG, Form 1442026-01-05: CHIHONG JOHN JU, Form 1442025-12-30: CHIHONG JOHN JU, Form 1442025-12-26: PAISLEY CHRISTOPHER B, Form 1442025-12-18: JOHN A YOUNG, Form 1442025-12-16: ELIZABETH M SCHWARTING, Form 1442025-12-02: LESLIE KOHN, Form 1442025-10-14: CHIHONG JOHN JU, Form 1442025-10-13: CHIHONG JOHN JU, Form 1442025-10-13: Ju Chi-Hong, sold2025-12-16: Schwarting Elizabeth M, sold2025-12-17: Wang Feng-Ming, sold2025-12-17: Ju Chi-Hong, sold2025-12-17: Lee Chan W, sold2025-12-17: Young John Alexander, sold2025-12-26: PAISLEY CHRISTOPHER B, sold2025-12-30: Ju Chi-Hong, sold2025-12-30: Ju Chi-Hong, sold2026-01-05: Ju Chi-Hong, sold2026-03-02: Wang Feng-Ming, sold2026-03-17: Wang Feng-Ming, sold2026-03-17: Ju Chi-Hong, sold2026-03-17: Lee Chan W, sold2026-03-17: Young John Alexander, sold2026-04-21: Young John Alexander, sold2026-05-26: Wang Feng-Ming, sold2026-05-26: Young John Alexander, sold2026-06-12: Chen Yun-Lung, sold2026-06-17: Wang Feng-Ming, sold2026-06-17: Ju Chi-Hong, sold2026-06-17: Lee Chan W, sold2026-06-17: Young John Alexander, sold
under a no plan named▼ salesize is dollars

Form 144 notices, newest first

2026-09-25PAISLEY CHRISTOPHER B, Director$17,690
250 shplan 2025-09-22Form 4s on file end Jun 23144 ↗
2026-09-18JOHN YOUNG, CFO$126,861
1,896 shplan 2026-01-15Form 4s on file end Jun 23144 ↗
2026-07-09YUN-LUNG CHEN, VP, Business Development and$468,656
5,958 shno plan dateForm 4s on file end Jun 23144 ↗
2026-07-01CHIHONG JOHN JU, Senior VP, Systems & GM$888,398
10,000 shno plan dateForm 4s on file end Jun 23144 ↗
2026-07-01FENG-MING WANG, CEO$1,394,250
16,250 shplan 2025-10-08Form 4s on file end Jun 23144 ↗
2026-06-26PAISLEY CHRISTOPHER B, Director$15,503
250 shplan 2025-09-22144 ↗
Form 4, 2026-06-30: sold 250 at $62.01 Form 4 ↗
2026-06-17JOHN YOUNG, CFO$123,971
1,847 shplan 2026-01-15144 ↗
Form 4, 2026-06-18: sold 5,033 at $67.54 Form 4 ↗
2026-06-12YUN-LUNG CHEN, VP, Business Development and$660,946
9,856 shno plan date144 ↗
Form 4, 2026-06-16: sold 9,856 at $67.06 Form 4 ↗
2026-05-26FENG-MING WANG, CEO$2,845,375
32,500 shplan 2025-10-08144 ↗
Form 4, 2026-05-28: sold 32,500 at $91.01 Form 4 ↗
2026-05-26JOHN YOUNG, CFO$35,020
400 shplan 2026-01-15144 ↗
Form 4, 2026-05-28: sold 400 at $96.00 Form 4 ↗
2026-04-21JOHN YOUNG, CFO$116,841
1,971 shplan 2026-01-15144 ↗
Form 4, 2026-04-22: sold 1,971 at $60.00 Form 4 ↗
2026-03-02FENG-MING WANG, CEO$3,017,000
50,000 shplan 2025-10-08144 ↗
Form 4, 2026-03-04: sold 50,000 at $60.80 Form 4 ↗
2026-01-05CHIHONG JOHN JU, Senior VP, Systems & GM$584,103
7,728 shno plan date144 ↗
Form 4, 2026-01-07: sold 7,728 at $75.58 Form 4 ↗
2025-12-30CHIHONG JOHN JU, Senior VP, Systems & GM$558,161
7,945 shno plan date144 ↗
Form 4, 2025-12-31: sold 3,765 at $70.32 Form 4 ↗
2025-12-26PAISLEY CHRISTOPHER B, Director$36,090
500 shplan 2025-09-22144 ↗
Form 4, 2025-12-29: sold 500 at $72.18 Form 4 ↗
2025-12-18JOHN A YOUNG, CFO$276,591
3,791 shno plan date144 ↗
Form 4, 2025-12-19: sold 6,370 at $72.50 Form 4 ↗
2025-12-16ELIZABETH M SCHWARTING, Director$45,163
624 shno plan date144 ↗
Form 4, 2025-12-18: sold 624 at $72.38 Form 4 ↗
2025-12-02LESLIE KOHN, Chief Technology Officer$10.7M
150,000 shno plan dateno Form 4 on file144 ↗
2025-10-14CHIHONG JOHN JU, Senior VP, Systems & GM$498,390
6,156 shno plan date144 ↗
Form 4, 2025-12-19: sold 1,342 at $71.82 Form 4 ↗
2025-10-13CHIHONG JOHN JU, Senior VP, Systems & GM$411,093
5,057 shno plan date144 ↗
Form 4, 2025-10-15: sold 11,213 at $81.11 Form 4 ↗