AMBA
Ambarella IncCompany with tickers: AMBA
CIK
1280263
CUSIP
G037AX101
Shares Outstanding
43,868,185
13F Activity (30d)
178 filings
174 filers
Notices of intent to sell restricted or control shares, filed with the SEC on Form 144 by insiders and affiliates. A Form 144 signals a planned sale — it does not confirm the shares were actually sold.
| Filed | Seller | Relationship | Shares | Approx. Sale | Broker |
|---|---|---|---|---|---|
| 2026-05-26 | FENG-MING WANG | Director, Officer | 32,500 | 2026-05-26 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-26 | JOHN YOUNG | Officer | 400 | 2026-05-26 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-04-21 | JOHN YOUNG | Officer | 1,971 | 2026-04-21 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-03-02 | FENG-MING WANG | Director, Officer | 50,000 | 2026-03-02 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-01-05 | CHIHONG JOHN JU | Officer | 7,728 | 2026-01-05 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-30 | CHIHONG JOHN JU | Officer | 7,945 | 2025-12-30 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-29 | PAISLEY CHRISTOPHER B | Director | 500 | 2025-12-26 | Fidelity Brokerage Services LLC |
| 2025-12-18 | JOHN A YOUNG | Officer | 3,791 | 2025-12-18 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-16 | ELIZABETH M SCHWARTING | Director | 624 | 2025-12-16 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-02 | LESLIE KOHN | Officer | 150,000 | 2025-12-02 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-10-14 | CHIHONG JOHN JU | Officer | 6,156 | 2025-10-14 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-10-14 | CHIHONG JOHN JU | Officer | 5,057 | 2025-10-13 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-10-06 | ELIZABETH M SCHWARTING | Director | 2,664 | 2025-10-06 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-09-22 | CHRISTOPHER DAY | Officer | 1,000 | 2025-09-22 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-09-19 | CHRISTOPHER DAY | Officer | 1,000 | 2025-09-19 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-09-18 | CHRISTOPHER DAY | Officer | 829 | 2025-09-18 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-09-10 | YUN-LUNG CHEN | Officer | 8,492 | 2025-09-10 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-09-08 | CHRISTOPHER DAY | Officer | 1,772 | 2025-09-08 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-07-14 | CHRISTOPHER DAY | Officer | 2,907 | 2025-07-14 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-06-25 | PAISLEY CHRISTOPHER B | Director | 1,000 | 2025-06-25 | Fidelity Brokerage Services LLC |
| 2025-03-25 | PAISLEY CHRISTOPHER B | Director | 500 | 2025-03-25 | Fidelity Brokerage Services LLC |
| 2025-01-16 | Lee Chan W | Officer | 1,000 | 2025-01-16 | Fidelity Brokerage Services LLC |
| 2025-01-15 | Lee Chan W | Officer | 1,000 | 2025-01-15 | Fidelity Brokerage Services LLC |
| 2025-01-14 | Lee Chan W | Officer | 1,000 | 2025-01-14 | Fidelity Brokerage Services LLC |
| 2025-01-13 | Lee Chan W | Officer | 1,000 | 2025-01-13 | Fidelity Brokerage Services LLC |
| 2025-01-10 | Lee Chan W | Officer | 1,000 | 2025-01-10 | Fidelity Brokerage Services LLC |
| 2025-01-08 | Lee Chan W | Officer | 1,000 | 2025-01-08 | Fidelity Brokerage Services LLC |
| 2025-01-07 | Lee Chan W | Officer | 1,000 | 2025-01-07 | Fidelity Brokerage Services LLC |
| 2025-01-06 | Lee Chan W | Officer | 1,000 | 2025-01-06 | Fidelity Brokerage Services LLC |
| 2025-01-03 | Day Christopher | Officer | 1,247 | 2025-01-03 | Morgan Stanley Smith Barney LLC Executive Services |
| 2025-01-03 | Lee Chan W | Officer | 1,000 | 2025-01-03 | Fidelity Brokerage Services LLC |
| 2025-01-02 | Lee Chan W | Officer | 1,000 | 2025-01-02 | Fidelity Brokerage Services LLC |
| 2024-12-26 | PAISLEY CHRISTOPHER B | Director | 1,500 | 2024-12-26 | Fidelity Brokerage Services LLC |
| 2024-12-18 | Schwarting Elizabeth M | Director | 253 | 2024-12-18 | Morgan Stanley Smith Barney LLC Executive Services |
| 2024-12-18 | Day Christopher | Officer | 929 | 2024-12-18 | Morgan Stanley Smith Barney LLC Executive Services |
| 2024-12-09 | Ju Chi-Hong | Officer | 5,118 | 2024-12-09 | Morgan Stanley Smith Barney LLC Executive Services |
| 2024-12-02 | Day Christopher | Officer | 1,278 | 2024-12-02 | Morgan Stanley Smith Barney LLC Executive Services |
| 2024-09-30 | Day Christopher | Officer | 2,904 | 2024-09-30 | Morgan Stanley Smith Barney LLC Executive Services |
| 2024-09-25 | PAISLEY CHRISTOPHER B | Director | 500 | 2024-09-25 | Fidelity Brokerage Services LLC |
| 2024-09-24 | Schwarting Elizabeth M | Director | 913 | 2024-09-24 | Morgan Stanley Smith Barney LLC Executive Services |
| 2024-09-03 | Wang Feng-Ming | Officer | 36,000 | 2024-09-03 | MORGAN STANLEY SMITH BARNEY LLC EXECUTIVE SERVICES |
| 2024-09-03 | Chen Yun-Lung | Officer | 5,963 | 2024-09-03 | Morgan Stanley Smith Barney LLC Executive Services |
| 2024-07-08 | Day Christopher | Officer | 1,408 | 2024-07-08 | Morgan Stanley Smith Barney LLC Executive Services |
| 2024-06-26 | Ju Chi-Hong | Officer | 6,000 | 2024-06-26 | MORGAN STANLEY SMITH BARNEY LLC EXECUTIVE SERVICES |
| 2024-06-21 | Ju Chi-Hong | Officer | 8,900 | 2024-06-21 | MORGAN STANLEY SMITH BARNEY LLC EXECUTIVE SERVICES |
| 2024-06-10 | Ju Chi-Hong | Officer | 13,013 | 2024-06-10 | Morgan Stanley Smith Barney LLC Executive Services |
| 2024-06-07 | Ju Chi-Hong | Officer | 2,296 | 2024-06-07 | Morgan Stanley Smith Barney LLC Executive Services |
| 2023-12-26 | PAISLEY CHRISTOPHER B | Director | 500 | 2023-12-26 | Fidelity Brokerage Services LLC |
| 2023-12-18 | Schwarting Elizabeth M | Director | 804 | 2023-12-18 | Morgan Stanley Smith Barney LLC Executive Services |
| 2023-12-06 | RICHARDSON DAVID JEFFREY | Director | 8,056 | 2023-12-06 | Morgan Stanley Smith Barney LLC Executive Services |
Showing 1–50 of 58 filings