Ambarella Inc insider trading
Every open-market purchase and sale by Ambarella Inc's officers, directors and largest shareholders since November 4, 2021, and what the share price did next.
| Date | Insider | Trade | Shares | Price | Value | 1M after | 3M after | 6M after |
|---|
Does following Ambarella Inc’s insiders pay?
From October 15, 2012 to September 18, 2026, 21 insiders reported 1 open-market purchase and 402 sales not made under a pre-set plan in Ambarella Inc. Twelve months after each purchase was reported, the shares were −1.5% against the S&P 500 on average (median −1.5%), over 1 purchase with a full year of prices; 0% beat the index. After sales, the shares moved +2.1% against the index over 12 months (a negative figure means selling was the right call). That rests on fewer than 20 purchases, too few to read much into. Buying each purchase the day after it was reported, an equal amount each, held 12 months or until that insider reported a sale, would have turned $10,000 on March 14, 2022 into $11,273 by November 2, 2026, +2.6% a year. It held shares 22% of the time; the S&P 500 on those same days, with Treasury bills otherwise, made $11,299 (+2.7% a year), and held throughout $19,328 (+15.3%).
| Insider | Role | Purchases | 12 months after their purchases | Beat the S&P 500 | Sales | 12 months after their sales | Latest report |
|---|---|---|---|---|---|---|---|
| Day Christopher | VP, Marketing | 0 | — | — | 107 | −0.1% (107) | June 20, 2025 |
| Wang Feng-Ming | CEO | 0 | — | — | 59 | +6.1% (55) | September 18, 2026 |
| Kohn Leslie | Chief Technology Officer | 0 | — | — | 53 | +7.1% (53) | September 19, 2025 |
| Ju Chi-Hong | Senior VP, Systems & GM | 0 | — | — | 38 | −24.1% (31) | September 18, 2026 |
| Lee Chan W | Chief Operations Officer | 0 | — | — | 24 | −20.6% (20) | September 18, 2026 |
| Chen Yun-Lung | VP, Business Dev. & Marketing | 0 | — | — | 23 | −18.2% (21) | July 10, 2026 |
| Laplante George | Executive Vice President | 0 | — | — | 21 | +17.7% (21) | September 20, 2018 |
| Eichler Kevin C | CFO | 0 | — | — | 15 | +18.9% (15) | March 18, 2022 |
| Schwarting Elizabeth M | Director | 0 | — | — | 13 | −5.5% (12) | December 18, 2025 |
| Young John Alexander | CFO | 0 | — | — | 12 | −6.1% (9) | September 18, 2026 |
| Tan Lip Bu | Director | 0 | — | — | 8 | +8.1% (8) | December 30, 2015 |
| Legall Didier | Executive Vice President | 0 | — | — | 5 | +155.4% (5) | December 11, 2014 |
| Richardson David Jeffrey | Director | 0 | — | — | 5 | +2.1% (5) | December 8, 2023 |
| White Brian C | CFO | 0 | — | — | 5 | −46.9% (5) | December 21, 2023 |
| Meng Teresa H | Director | 0 | — | — | 4 | +31.0% (4) | December 8, 2021 |
| Verhalen Andrew W | Director | 1 | −1.5% (1) | 0% | 3 | +71.1% (3) | March 11, 2022 |
| Hu Chenming | Director | 0 | — | — | 2 | −40.1% (2) | October 1, 2019 |
| Paisley Christopher B | Director | 0 | — | — | 2 | −58.1% (1) | December 29, 2025 |
| Goldman Sachs Group Inc | 10% owner | 0 | — | — | 1 | +64.6% (1) | April 7, 2020 |
| Gurley J William and related entities | 10% owner | 0 | — | — | 1 | +237.5% (1) | October 15, 2012 |
| Hon Hsiao-Wuen | Director | 0 | — | — | 1 | −16.1% (1) | December 16, 2024 |
When several insiders traded Ambarella Inc
Months when 2 or more insiders became net buyers, or 3 or more net sellers, of Ambarella Inc in reports dated in the 91 days before the month end, and how the stock did against the S&P 500 from that month end. After 4 selling crowds, +10.6%. One company's history is too short to judge by; the test across every company is the better guide.
| Month | Crowd | 3 months on, vs S&P 500 | 6 months | 12 months |
|---|---|---|---|---|
| December 31, 2021 | 10 selling | −45.2% | −49.5% | −42.3% |
| December 31, 2013 | 6 selling | −24.3% | −10.5% | +36.2% |
| September 30, 2013 | 3 selling | +54.3% | +24.3% | +104.2% |
| October 31, 2012 | 3 selling | +37.4% | +77.9% | +157.5% |