| Due Diligence for Asset Managers |
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| Ambarella Inc | |
|---|---|
| Ticker | AMBA |
| CIK # | 0001280263 |
| CUSIP | G037AX101 |
| Sector | Manufacturing - Semiconductors & Related Devices |
| Address | 2975 San Ysidro Way, Santa Clara, CA 95054 |
| Source | [EDGAR] |
| CIK | Filing | 2011 - 2026 |
|---|---|---|
| [0001280263] | 10-K | |
| [0001280263] | 10-Q | |
| [0001280263] | 3 | |
| [0001280263] | 4 | |
| [0001280263] | 5 | |
| [0001280263] | 8-K | |
| [0001280263] | SC 13G |
| Form 13D/13G Filer | Form 13D/13G Subject | Filed | % Owned |
|---|---|---|---|
| Vanguard Portfolio Management LLC | Ambarella Inc | [2026-04-28] | 0.0 |
| Vanguard Group Inc | Ambarella Inc | [2024-11-04] | 11.18 |
| BlackRock Inc | Ambarella Inc | [2020-01-10] | 10.1 |
| van Berkom & Associates Inc | Ambarella Inc | [2019-05-06] | 4.93 |
| van Berkom & Associates Inc | Ambarella Inc | [2019-02-11] | 5.18 |
| BlackRock Inc | Ambarella Inc | [2019-02-08] | 5.1 |
| van Berkom & Associates Inc | Ambarella Inc | [2018-11-05] | 5.35 |
| Morgan Stanley | Ambarella Inc | [2018-06-13] | 5.3 |
| Vanguard Group Inc | Ambarella Inc | [2016-02-10] | 7.35 |
| BlackRock Inc | Ambarella Inc | [2015-02-02] | 6.0 |
| [2013-02-14] | None | ||
| Benchmark Capital Partners IV LP | Ambarella Inc | [2013-02-14] | 7.8 |
| [2013-02-14] | None | ||
| [2013-02-14] | None | ||
| Matrix Partners VII LP ET AL | Ambarella Inc | [2013-02-12] | 0.76 |
| Insider Transaction (Form 3/4/5) | Date | Action | Shares | Price | Value ($) |
|---|---|---|---|---|---|
|
Ju Chi-Hong
Ordinary Shares
|
2026-03-19 | Sell | 2,155 | $54.14 | 116,672 |
|
Wang Feng-Ming
Ordinary Shares
|
2026-03-19 | Sell | 8,083 | $54.14 | 437,614 |
|
Lee Chan W
Ordinary Shares
|
2026-03-19 | Sell | 3,641 | $54.14 | 197,124 |
|
Young John Alexander
Ordinary Shares
|
2026-03-19 | Sell | 3,038 | $54.14 | 164,477 |
|
Chen Yun-Lung
Ordinary Shares
|
2026-03-18 | Grant | 2,849 | $0.00 | |
|
Ju Chi-Hong
Ordinary Shares
|
2026-03-18 | Grant | 5,930 | $0.00 | |
|
Lee Chan W
Ordinary Shares
|
2026-03-18 | Grant | 7,320 | $0.00 | |
|
Wang Feng-Ming
Ordinary Shares
|
2026-03-18 | Grant | 15,686 | $0.00 | |
|
Young John Alexander
Ordinary Shares
|
2026-03-18 | Grant | 5,560 | $0.00 | |
|
Chen Yun-Lung
Ordinary Shares
|
2026-03-17 | Option exercise | 4,651 | ||
|
Wang Feng-Ming
Ordinary Shares
|
2026-03-17 | Option exercise | 27,598 | ||
|
Young John Alexander
Ordinary Shares
|
2026-03-17 | Option exercise | 3,556 | ||
|
Wang Feng-Ming
Performance Stock Units · derivative
|
2026-03-17 | Option exercise | 27,598 | $0.00 | |
|
Ju Chi-Hong
Performance Stock Units · derivative
|
2026-03-17 | Option exercise | 9,553 | $0.00 | |
|
Lee Chan W
Performance Stock Units · derivative
|
2026-03-17 | Option exercise | 13,678 | $0.00 | |
|
Lee Chan W
Ordinary Shares
|
2026-03-17 | Option exercise | 13,678 | ||
|
Ju Chi-Hong
Ordinary Shares
|
2026-03-17 | Sell | 4,729 | $52.77 | 249,549 |
|
Wang Feng-Ming
Ordinary Shares
|
2026-03-17 | Sell | 18,976 | $52.77 | 1,001,364 |
|
Chen Yun-Lung
Performance Stock Units · derivative
|
2026-03-17 | Option exercise | 4,651 | $0.00 | |
|
Lee Chan W
Ordinary Shares
|
2026-03-17 | Sell | 6,729 | $52.77 | 355,089 |
| showing 20 of 200 most recent transactions | |||||
| 13F Ownership Over Time | Holders | Shares Held |
|---|---|---|
| 2026-03-31 | 307 | 35,300,601 |
| 2025-12-31 | 326 | 38,693,420 |
| 2025-09-30 | 337 | 38,534,491 |
| 2025-06-30 | 307 | 36,369,726 |
| 2025-03-31 | 302 | 35,964,038 |
| 2024-12-31 | 302 | 35,340,175 |
| 2024-09-30 | 269 | 34,462,200 |
| 2024-06-30 | 263 | 35,831,339 |
| 2024-03-31 | 269 | 37,005,637 |
| 2023-12-31 | 261 | 36,469,140 |
| 2023-09-30 | 254 | 32,736,842 |
| 2023-06-30 | 263 | 32,200,131 |