Ambarella Inc
Ownership
Ownership Structure
Who owns Ambarella Inc (AMBA)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 95.5% of the shares are freely tradable; institutional investors hold 87.1%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 8.94 | 3,944,592 | +4.1 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 8.36 | 3,688,405 | -0.8 | 06/30/2026 |
| T. Rowe Price Associates, Inc. | 5.89 | 2,598,976 | +172.9 | 06/30/2026 |
| State Street Corp | 5.81 | 2,562,733 | +29.7 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.24 | 1,873,539 | +3.2 | 06/30/2026 |
| Manufacturers Life Insurance Co | 2.69 | 1,186,541 | -25.2 | 06/30/2026 |
| Legal & General Group PLC | 2.53 | 1,116,729 | +20.5 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| T. Rowe Price Mid-Cap Value | 3.04 | 1,343,872 | +21.7 | 09/30/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 3.01 | 1,328,793 | +0.3 | 09/30/2026 |
| iShares Russell 2000 ETF | 2.50 | 1,104,899 | -1.1 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Wang Feng-Ming | CEO | 767,759 | 47,370,730 $ | Sep 17, 2026 | direct |
| Lee Chan W | Chief Operations Officer | 154,443 | 9,529,133 $ | Sep 17, 2026 | direct |
| Ju Chi-Hong | Senior VP, Systems & GM | 154,153 | 9,511,240 $ | Sep 17, 2026 | direct |
| Young John Alexander | CFO | 107,806 | 6,651,630 $ | Sep 18, 2026 | direct |
| Paisley Christopher B | Director | 43,930 | 2,710,481 $ | Sep 25, 2026 | direct |
| Hon Hsiao-Wuen | Director | 33,927 | 2,093,296 $ | Sep 8, 2026 | direct |
| Hu Chenming | Director | 32,667 | 2,015,554 $ | Sep 8, 2026 | direct |
| Schwarting Elizabeth M | Director | 9,841 | 607,190 $ | Sep 8, 2026 | direct |
| Breithaupt Chantelle Yvette | Director | 8,091 | 499,215 $ | Sep 8, 2026 | direct |
| Richardson David Jeffrey | Director | 5,649 | 348,543 $ | Sep 8, 2026 | direct |
| Bryant Gregory M | Director | 5,608 | 346,014 $ | Sep 8, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 25, 2026 | Paisley Christopher B | Director | Sell | 250 | 70.76 | 17,690 |
| Sep 18, 2026 | Young John Alexander | CFO | Sell | 1,896 | 67.28 | 127,563 |
| Sep 17, 2026 | Wang Feng-Ming | CEO | Sell | 6,086 | 64.83 | 394,555 |
| Sep 17, 2026 | Ju Chi-Hong | Senior VP, Systems & GM | Sell | 2,009 | 64.83 | 130,243 |
| Sep 17, 2026 | Lee Chan W | Chief Operations Officer | Sell | 2,893 | 64.83 | 187,553 |
| Sep 17, 2026 | Young John Alexander | CFO | Sell | 3,126 | 64.83 | 202,659 |
| Sep 8, 2026 | Hu Chenming | Director | Other | 3,151 | 0.00 | – |
| Sep 8, 2026 | Bryant Gregory M | Director | Other | 3,151 | 0.00 | – |
| Sep 8, 2026 | Breithaupt Chantelle Yvette | Director | Other | 3,151 | 0.00 | – |
| Sep 8, 2026 | Schwarting Elizabeth M | Director | Other | 3,151 | 0.00 | – |
| Sep 8, 2026 | Hon Hsiao-Wuen | Director | Other | 3,151 | 0.00 | – |
| Sep 8, 2026 | Richardson David Jeffrey | Director | Other | 3,151 | 0.00 | – |
| Sep 8, 2026 | Paisley Christopher B | Director | Other | 3,151 | 0.00 | – |
| Apr 21, 2026 | John Alexander Young | CFO | Sell | 1,971 | 60.00 | 118,260 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: November 2, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.