AMBARELLA INC Insider Trading Activity
Every SEC Form 4 insider transaction reported for AMBARELLA INC (AMBA), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud · Insider-trading data from SEC EDGAR
Latest filing:
Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.
Quick Answer
Are AMBA insiders buying or selling?
In the last 12 months, AMBARELLA INC insiders reported 0 open-market purchases ($0) and 31 sales ($16.7M) — net selling of $16.7M. Since January 2018, Trabud has recorded 340 Form 4 filings for AMBA: 1 buys ($1.0M) and 339 sells ($121.3M).
Source: SEC EDGAR Form 4
What stands out
- No AMBARELLA INC insider made an open-market purchase in the last 12 months; the 31 reported open-market sales totaled $16.7M.
Key Statistics (January 2018 – Sep 28, 2026)
Total Form 4 filings
340
SEC EDGAR
Insider filers
18
Insider buys (1)
$1.0M
Insider sells (339)
$121.3M
Insider sentiment
Net sellingNet insider flow of $120.3M in net selling since January 2018, and $16.7M in net selling over the last 12 months.
Recent AMBA insider transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Sep 28, 2026 | Christopher B Paisley | Director | Sale | 250 | $70.76 | $17.7K | SEC ↗ |
| Sep 21, 2026 | John Alexander Young | CFO | Sale | 1.9K | $67.28 | $127.6K | SEC ↗ |
| Sep 18, 2026 | Feng-Ming Wang | CEO | Sale | 6.1K | $64.83 | $394.6K | SEC ↗ |
| Sep 18, 2026 | Chi-Hong Ju | Senior VP, Systems & GM | Sale | 2.0K | $64.83 | $130.2K | SEC ↗ |
| Sep 18, 2026 | Chan W Lee | Chief Operations Officer | Sale | 2.9K | $64.83 | $187.6K | SEC ↗ |
| Sep 18, 2026 | John Alexander Young | CFO | Sale | 3.1K | $64.83 | $202.7K | SEC ↗ |
| Jul 2, 2026 | Chi-Hong Ju | Senior VP, Systems & GM | Sale | 10.0K | $88.84 | $888.4K | SEC ↗ |
| Jul 2, 2026 | Feng-Ming Wang | CEO | Sale | 16.3K | $90.08 | $1.5M | SEC ↗ |
| Jun 30, 2026 | Christopher B Paisley | Director | Sale | 250 | $62.01 | $15.5K | SEC ↗ |
| Jun 18, 2026 | John Alexander Young | CFO | Sale | 5.0K | $67.54 | $339.9K | SEC ↗ |
| Jun 18, 2026 | Chan W Lee | Chief Operations Officer | Sale | 3.0K | $67.87 | $200.3K | SEC ↗ |
| Jun 18, 2026 | Chi-Hong Ju | Senior VP, Systems & GM | Sale | 2.0K | $67.87 | $136.9K | SEC ↗ |
| Jun 18, 2026 | Feng-Ming Wang | CEO | Sale | 6.2K | $67.87 | $421.1K | SEC ↗ |
| Jun 16, 2026 | Yun-Lung Chen | VP, Business Development and | Sale | 9.9K | $67.06 | $660.9K | SEC ↗ |
| May 29, 2026 | John Alexander Young | CFO | Sale | 400 | $96.00 | $38.4K | SEC ↗ |
| May 29, 2026 | Feng-Ming Wang | CEO | Sale | 32.5K | $91.01 | $3.0M | SEC ↗ |
| Apr 22, 2026 | John Alexander Young | CFO | Sale | 2.0K | $60.00 | $118.3K | SEC ↗ |
| Mar 19, 2026 | John Alexander Young | CFO | Sale | 7.6K | $53.32 | $406.0K | SEC ↗ |
| Mar 19, 2026 | Chan W Lee | Chief Operations Officer | Sale | 10.4K | $53.25 | $552.2K | SEC ↗ |
| Mar 19, 2026 | Chi-Hong Ju | Senior VP, Systems & GM, Asia | Sale | 6.9K | $53.20 | $366.2K | SEC ↗ |
| Mar 19, 2026 | Feng-Ming Wang | CEO | Sale | 27.1K | $53.18 | $1.4M | SEC ↗ |
| Mar 4, 2026 | Feng-Ming Wang | CEO | Sale | 50.0K | $60.80 | $3.0M | SEC ↗ |
| Jan 23, 2026 | Chi-Hong Ju | Senior VP, Systems & GM, Asia | Sale | 7.9K | $70.25 | $558.1K | SEC ↗ |
| Jan 7, 2026 | Chi-Hong Ju | Senior VP, Systems & GM, Asia | Sale | 7.7K | $75.58 | $584.1K | SEC ↗ |
| Dec 31, 2025 | Chi-Hong Ju | Senior VP, Systems & GM, Asia | Sale | 3.8K | $70.32 | $264.8K | SEC ↗ |
Showing the 25 most recent of 340 Form 4 filings for AMBARELLA INC.
Most active AMBA insiders
- Christopher Day61 filings
- Feng-Ming Wang45 filings
- Leslie Kohn43 filings
- Chi-Hong Ju39 filings
- Christopher B Paisley28 filings
Ask anything about AMBA insider activity
Use Trabud's AI agent to query AMBARELLA INC's Form 4 history in plain English — "Show me AMBA CEO purchases this year" or compare it against any other ticker.
Open the AI agentAMBA insider trading FAQ
Are AMBARELLA INC insiders buying or selling?
In the last 12 months, AMBARELLA INC insiders reported 0 open-market purchases ($0) and 31 sales ($16.7M) — net selling of $16.7M. Since January 2018, Trabud has recorded 340 Form 4 filings for AMBA: 1 buys ($1.0M) and 339 sells ($121.3M). Over the full record that is net selling of $120.3M.
How many insiders trade AMBA stock?
18 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for AMBARELLA INC. The most recent filing was accepted on Sep 28, 2026.
Where does Trabud get AMBA insider trading data?
All AMBA insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.