As of the latest Form 4 filed Jul 10, 2026.
What Ambarella Inc insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 47 most recent filings for AMBA.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-07-10 | 2026-07-09 | Chen Yun-Lung VP, Business Dev. & Marketing | SSale | −5.96K | $78.66 | $469K | No | Form 4 ↗ |
| 2026-07-02 | 2026-07-01 | Ju Chi-Hong Senior VP, Systems & GM | SSale | −10.0K | $88.84 | $888K | No | Form 4 ↗ |
| 2026-07-02 | 2026-07-01 | Wang Feng-Ming CEO | SSale | −16.3K | $90.08 | $1.46M | Yes (planned) | Form 4 ↗ |
| 2026-06-30 | 2026-06-26 | PAISLEY CHRISTOPHER B Director | SSale | −250.00 | $62.01 | $15.5K | Yes (planned) | Form 4 ↗ |
| 2026-06-18 | 2026-06-17 | Young John Alexander CFO | SSale | −1.85K | $66.98 | $124K | Yes (planned) | Form 4 ↗ |
| 2026-06-18 | 2026-06-17 | Young John Alexander, CFO | SSale | −3.19K | $67.87 | $216K | Yes (planned) | Form 4 ↗ |
| 2026-06-18 | 2026-06-17 | Lee Chan W Chief Operations Officer | SSale | −2.95K | $67.87 | $200K | No | Form 4 ↗ |
| 2026-06-18 | 2026-06-17 | Ju Chi-Hong Senior VP, Systems & GM | SSale | −2.02K | $67.87 | $137K | No | Form 4 ↗ |
| 2026-06-18 | 2026-06-17 | Wang Feng-Ming CEO | GGift | −10.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-06-18 | 2026-06-17 | Wang Feng-Ming, CEO | SSale | −6.20K | $67.87 | $421K | No | Form 4 ↗ |
| 2026-06-16 | 2026-06-12 | Chen Yun-Lung VP, Business Development and | SSale | −9.86K | $67.06 | $661K | No | Form 4 ↗ |
| 2026-05-28 | 2026-05-26 | Young John Alexander CFO | SSale | −400.00 | $96.00 | $38.4K | Yes (planned) | Form 4 ↗ |
| 2026-05-28 | 2026-05-26 | Young John Alexander, CFO | MExercise | +400.00 | $55.80 | $22.3K | Yes (planned) | Form 4 ↗ |
| 2026-05-28 | 2026-05-26 | Wang Feng-Ming CEO | SSale | −9.15K | $92.05 | $842K | Yes (planned) | Form 4 ↗ |
| 2026-05-28 | 2026-05-26 | Wang Feng-Ming, CEO | SSale | −6.07K | $91.23 | $553K | Yes (planned) | Form 4 ↗ |
| 2026-05-28 | 2026-05-26 | Wang Feng-Ming, CEO | SSale | −17.3K | $90.38 | $1.56M | Yes (planned) | Form 4 ↗ |
| 2026-04-22 | 2026-04-21 | Young John Alexander CFO | SSale | −1.97K | $60.00 | $118K | Yes (planned) | Form 4 ↗ |
| 2026-03-19 | 2026-03-19 | Young John Alexander CFO | SSale | −3.04K | $54.14 | $164K | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-19 | Lee Chan W Chief Operations Officer | SSale | −3.64K | $54.14 | $197K | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-19 | Ju Chi-Hong Senior VP, Systems & GM, Asia | SSale | −2.15K | $54.14 | $117K | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-19 | Wang Feng-Ming CEO | SSale | −8.08K | $54.14 | $438K | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-18 | Young John Alexander CFO | AAward | +5.56K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-18 | Chen Yun-Lung VP, Business Development and M | AAward | +2.85K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-18 | Lee Chan W Chief Operations Officer | AAward | +7.32K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-18 | Ju Chi-Hong Senior VP, Systems & GM, Asia | AAward | +5.93K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-18 | Wang Feng-Ming CEO | AAward | +15.7K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-17 | Young John Alexander CFO | SSale | −4.58K | $52.77 | $242K | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-17 | Young John Alexander, CFO | MExercise | +3.56K | — | — | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-17 | Chen Yun-Lung VP, Business Development and M | MExercise | +4.65K | — | — | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-17 | Lee Chan W Chief Operations Officer | SSale | −6.73K | $52.77 | $355K | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-17 | Lee Chan W, Chief Operations Officer | MExercise | +13.7K | — | — | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-17 | Ju Chi-Hong Senior VP, Systems & GM, Asia | SSale | −4.73K | $52.77 | $250K | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-17 | Ju Chi-Hong, Senior VP, Systems & GM, Asia | MExercise | +9.55K | — | — | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-17 | Wang Feng-Ming CEO | SSale | −19.0K | $52.77 | $1.00M | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-17 | Wang Feng-Ming, CEO | MExercise | +27.6K | — | — | No | Form 4 ↗ |
| 2026-03-04 | 2026-03-02 | Young John Alexander CFO | AAward | +15.2K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-04 | 2026-03-02 | Chen Yun-Lung VP, Business Development and M | AAward | +7.22K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-04 | 2026-03-02 | Lee Chan W Chief Operations Officer | AAward | +24.7K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-04 | 2026-03-02 | Ju Chi-Hong Senior VP, Systems & GM, Asia | AAward | +17.3K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-04 | 2026-03-02 | Wang Feng-Ming CEO | AAward | +53.2K | $0.00 | $0.00 | Yes (planned) | Form 4 ↗ |
| 2026-03-04 | 2026-03-02 | Wang Feng-Ming, CEO | SSale | −12.0K | $61.42 | $740K | Yes (planned) | Form 4 ↗ |
| 2026-03-04 | 2026-03-02 | Wang Feng-Ming, CEO | SSale | −32.5K | $60.91 | $1.98M | Yes (planned) | Form 4 ↗ |
| 2026-03-04 | 2026-03-02 | Wang Feng-Ming, CEO | SSale | −2.60K | $59.53 | $155K | Yes (planned) | Form 4 ↗ |
| 2026-03-04 | 2026-03-02 | Wang Feng-Ming, CEO | SSale | −1.90K | $58.77 | $112K | Yes (planned) | Form 4 ↗ |
| 2026-03-04 | 2026-03-02 | Wang Feng-Ming, CEO | SSale | −1.00K | $56.83 | $56.8K | Yes (planned) | Form 4 ↗ |
| 2026-03-04 | 2026-03-02 | Wang Feng-Ming, CEO | MExercise | +50.0K | $41.36 | $2.07M | Yes (planned) | Form 4 ↗ |
| 2026-03-04 | 2026-03-02 | Bryant Gregory M Director | AAward | +2.46K | $0.00 | $0.00 | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also AMBA’s full analysis or the market-wide insider trading feed. The tabs above jump to AMBA’s other SEC data.
Source: SEC Form 4 filings for AMBA, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.