Ambarella (AMBA)
Designs low-power edge AI chips and software for vehicles, cameras, robots, and industrial systems.
$67.10
After-hours close+0.07 (+0.10%)
At close$67.03(−2.64%)
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13F · 13D/G · Form 4
| Institutions | 82.20% | 36.29M shares | |
|---|---|---|---|
| 366 holders · as of Jun 30, 2026 | |||
| Insiders | 29.09% | 12.84M shares | |
| 15 holders · as of Sep 21, 2026 | |||
| Adds to | 111.29% | ||
44.14M company shares as of Sep 23, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing
These groups come from separate filings that can overlap, so they add to 111.29%; nothing is left for Other.
13F, as of Jun 30, 2026
366 holders · 36.29M shares · 93 new positions · 211 increased · 91 reduced · 53 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 3.94M | 8.94% | +155.4K | Aug 7, 2026 |
| Vanguard Portfolio Management LLC | 3.69M | 8.36% | −28.5K | Aug 13, 2026 |
| Price T Rowe Associates Inc /MD/ | 2.60M | 5.89% | +1.65M | Aug 14, 2026 |
| State Street Corp | 2.56M | 5.81% | +586.3K | Aug 7, 2026 |
| Vanguard Capital Management LLC | 1.87M | 4.24% | +58.9K | Aug 13, 2026 |
| Manufacturers Life Insurance Company, the | 1.19M | 2.69% | −399.5K | Sep 9, 2026 |
| Legal & General Group PLC | 1.12M | 2.53% | +190.3K | Aug 14, 2026 |
| Geode Capital Management, LLC | 1.10M | 2.49% | +68.9K | Aug 12, 2026 |
13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Vanguard Portfolio Management | 8.57% | 3.75M | 13G | Apr 28, 2026 |
| BlackRock, Inc. | 7.30% | 3.08M | 13G | Apr 23, 2025 |
| T. Rowe Price Associates, Inc. | 5.90% | 2.60M | 13G | Aug 14, 2026 |
| State Street Corporation | 5.80% | 2.56M | 13G | Aug 7, 2026 |
| Vanguard Capital Management | 5.01% | 2.20M | 13G | Jul 31, 2026 |
Form 4
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Sep 18, 2026 | John Alexander Youngofficer: CFO | Sale | 1,896 | $67.28 | 107,806 |
| Sep 17, 2026 | John Alexander Youngofficer: CFO | Sale | 3,126 | $64.83 | 109,702 |
| Sep 17, 2026 | Chan W. Leeofficer: Chief Operations Officer | Sale | 2,893 | $64.83 | 154,443 |
| Sep 17, 2026 | Chi-Hong Juofficer: Senior VP, Systems & GM | Sale | 2,009 | $64.83 | 154,153 |
| Sep 17, 2026 | Feng-Ming Wangdirector, officer: CEO | Sale | 6,086 | $64.83 | 767,759 |
| Jul 9, 2026 | Yun-Lung Chenofficer: VP, Business Dev. & Marketing | Sale | 5,958 | $78.66 | 60,557 |
| Jul 1, 2026 | Feng-Ming Wangdirector, officer: CEO | Sale | 16,250 | $90.08 | 773,607 |
| Jul 1, 2026 | Chi-Hong Juofficer: Senior VP, Systems & GM | Sale | 10,000 | $88.84 | 155,924 |
| Jun 26, 2026 | Christopher B. Paisleydirector | Sale | 250 | $62.01 | 41,029 |
| Jun 17, 2026 | Feng-Ming Wangdirector, officer: CEO | Sale | 6,204 | $67.87 | 799,857 |
House and Senate disclosures
Not reported.