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Planned insider sales
Notices (SEC Form 144) that executives and other insiders file before selling shares, and whether a sale was reported afterwards.
About this data
- What it is
- Before an executive, director or large owner sells restricted or control shares, they file a short notice with the SEC, called Form 144, saying how many shares they plan to sell, through which broker and roughly when. This feed lists those notices, and for each one shows whether a sale was reported afterwards on a Form 4 and how many days later.
- Who files it
- The person selling, or their broker, on the day the sale is placed. Electronic notices start in April 2023.
- How current
- We collect new notices throughout the day on SEC business days.
- Terms
- Form 144The notice an insider or other affiliate of a company files with the SEC before selling restricted or control shares, so the shares can be sold under Rule 144. The notice says how many shares, through which broker, and roughly when.10b5-1 planA Rule 10b5-1 trading plan lets an insider set up future sales in advance, on a schedule or at set prices, at a time when they do not hold inside information. A notice that gives a plan adoption date says the sale is made under such a plan.
- Worth knowing
- A notice is a plan, not a sale: the person may sell fewer shares, later, or not at all. The value is the one the filer typed, at a price they chose, not what the shares sell for. Many sales are routine, made to diversify or pay taxes, or under a 10b5-1 plan set up months earlier. A blank in the last column does not mean no sale: the person may not have to file a Form 4 (an ordinary affiliate does not), the sale may be recent, or the Form 4 may name a different spelling of the person. We match by the filer's number first and by name second. Information, not investment advice.
All of this comes from public filings.
Source and freshness · Information, not investment advice (disclaimer).
Form 144 notices per day, last 30 days
All notices Notices that give a 10b5-1 plan
By the day each notice was filed. A notice is a plan to sell, not a sale.
Latest notices of planned insider sales
Showing: ticker AMBA
| Filed | Insider | Company | Shares to sellA notice is a plan, not a sale. The person may sell fewer shares, sell later, or not sell at all, and the number of shares is what they expect to sell on the day they file. | ValueThe aggregate market value the filer typed on the notice: the shares times a price the filer chose. It is not what the shares will sell for. | PlanA Rule 10b5-1 trading plan lets an insider set up future sales in advance, on a schedule or at set prices, at a time when they do not hold inside information. A notice that gives a plan adoption date says the sale is made under such a plan. | Expected sale | Sale reportedInsiders who are officers, directors or hold more than 10% report their sales on a Form 4, within two business days. We look for the first Form 4 with an open-market sale by the same person in the same company within 90 days of the notice, and show how many days after the notice it was filed. A blank means we found none: the person may not have sold, may not have to file a Form 4, or the Form 4 may be one we do not have. | Notice |
|---|---|---|---|---|---|---|---|---|
| Sep 25, 2026 | Christopher B. Paisley Director | AMBA Ambarella, Inc. | 250 | $17.7K | 10b5-1 | Sep 25, 2026 | Form 4 ↗ 3 days later · 250 shares | Form 144 ↗ |
| Sep 18, 2026 | John Young Officer | AMBA Ambarella, Inc. | 1,896 | $126.9K | 10b5-1 | Sep 18, 2026 | Form 4 ↗ 3 days later · 1,896 shares | Form 144 ↗ |
| Jul 9, 2026 | Yun-Lung Chen Officer | AMBA Ambarella, Inc. | 5,958 | $468.7K | — | Jul 9, 2026 | Form 4 ↗ 1 day later · 5,958 shares | Form 144 ↗ |
| Jul 1, 2026 | Chihong John Ju Officer | AMBA Ambarella, Inc. | 10,000 | $888.4K | — | Jul 1, 2026 | Form 4 ↗ 1 day later · 10,000 shares | Form 144 ↗ |
| Jul 1, 2026 | Feng-Ming Wang Director, Officer | AMBA Ambarella, Inc. | 16,250 | $1.4M | 10b5-1 | Jul 1, 2026 | Form 4 ↗ 1 day later · 16,250 shares | Form 144 ↗ |
| Jun 26, 2026 | Christopher B. Paisley Director | AMBA Ambarella, Inc. | 250 | $15.5K | 10b5-1 | Jun 26, 2026 | Form 4 ↗ 4 days later · 250 shares | Form 144 ↗ |
| Jun 17, 2026 | John Young Officer | AMBA Ambarella, Inc. | 1,847 | $124.0K | 10b5-1 | Jun 17, 2026 | Form 4 ↗ 1 day later · 5,033 shares | Form 144 ↗ |
| Jun 12, 2026 | Yun-Lung Chen Officer | AMBA Ambarella, Inc. | 9,856 | $660.9K | — | Jun 12, 2026 | Form 4 ↗ 4 days later · 9,856 shares | Form 144 ↗ |
| May 26, 2026 | Feng-Ming Wang Director, Officer | AMBA Ambarella, Inc. | 32,500 | $2.8M | 10b5-1 | May 26, 2026 | Form 4 ↗ 2 days later · 32,500 shares | Form 144 ↗ |
| May 26, 2026 | John Young Officer | AMBA Ambarella, Inc. | 400 | $35.0K | 10b5-1 | May 26, 2026 | Form 4 ↗ 2 days later · 400 shares | Form 144 ↗ |
| Apr 21, 2026 | John Young Officer | AMBA Ambarella, Inc. | 1,971 | $116.8K | 10b5-1 | Apr 21, 2026 | Form 4 ↗ 1 day later · 1,971 shares | Form 144 ↗ |
| Mar 2, 2026 | Feng-Ming Wang Director, Officer | AMBA Ambarella, Inc. | 50,000 | $3.0M | 10b5-1 | Mar 2, 2026 | Form 4 ↗ 2 days later · 50,000 shares | Form 144 ↗ |
| Jan 5, 2026 | Chihong John Ju Officer | AMBA Ambarella, Inc. | 7,728 | $584.1K | — | Jan 5, 2026 | Form 4 ↗ 2 days later · 7,728 shares | Form 144 ↗ |
| Dec 30, 2025 | Chihong John Ju Officer | AMBA Ambarella, Inc. | 7,945 | $558.2K | — | Dec 30, 2025 | Form 4 ↗ 1 day later · 3,765 shares | Form 144 ↗ |
| Dec 29, 2025 | Christopher B. Paisley Director | AMBA Ambarella, Inc. | 500 | $36.1K | 10b5-1 | Dec 26, 2025 | Form 4 ↗ same day · 500 shares | Form 144 ↗ |
| Dec 18, 2025 | John A Young Officer | AMBA Ambarella, Inc. | 3,791 | $276.6K | — | Dec 18, 2025 | Form 4 ↗ 1 day later · 6,370 shares | Form 144 ↗ |
| Dec 16, 2025 | Elizabeth M Schwarting Director | AMBA Ambarella, Inc. | 624 | $45.2K | — | Dec 16, 2025 | Form 4 ↗ 2 days later · 624 shares | Form 144 ↗ |
| Dec 2, 2025 | Leslie Kohn Officer | AMBA Ambarella, Inc. | 150,000 | $10.7M | — | Dec 2, 2025 | — | Form 144 ↗ |
| Oct 14, 2025 | Chihong John Ju Officer | AMBA Ambarella, Inc. | 6,156 | $498.4K | — | Oct 14, 2025 | Form 4 ↗ 1 day later · 11,213 shares | Form 144 ↗ |
| Oct 14, 2025 | Chihong John Ju Officer | AMBA Ambarella, Inc. | 5,057 | $411.1K | — | Oct 13, 2025 | Form 4 ↗ 1 day later · 11,213 shares | Form 144 ↗ |
| Oct 6, 2025 | Elizabeth M Schwarting Director | AMBA Ambarella, Inc. | 2,664 | $227.4K | — | Oct 6, 2025 | Form 4 ↗ 2 days later · 2,664 shares | Form 144 ↗ |
| Sep 22, 2025 | Christopher Day Officer | AMBA Ambarella, Inc. | 1,000 | $89.0K | — | Sep 22, 2025 | — | Form 144 ↗ |
| Sep 19, 2025 | Christopher Day Officer | AMBA Ambarella, Inc. | 1,000 | $84.0K | — | Sep 19, 2025 | — | Form 144 ↗ |
| Sep 18, 2025 | Christopher Day Officer | AMBA Ambarella, Inc. | 829 | $68.4K | — | Sep 18, 2025 | — | Form 144 ↗ |
| Sep 10, 2025 | Yun-Lung Chen Officer | AMBA Ambarella, Inc. | 8,492 | $716.9K | — | Sep 10, 2025 | Form 4 ↗ 2 days later · 8,492 shares | Form 144 ↗ |
| Sep 8, 2025 | Christopher Day Officer | AMBA Ambarella, Inc. | 1,772 | $150.6K | — | Sep 8, 2025 | — | Form 144 ↗ |
| Jul 14, 2025 | Christopher Day Officer | AMBA Ambarella, Inc. | 2,907 | $194.3K | — | Jul 14, 2025 | — | Form 144 ↗ |
| Jun 25, 2025 | Christopher B. Paisley Director | AMBA Ambarella, Inc. | 1,000 | $62.6K | 10b5-1 | Jun 25, 2025 | Form 4 ↗ 2 days later · 1,000 shares | Form 144 ↗ |
| Mar 25, 2025 | Christopher B. Paisley Director | AMBA Ambarella, Inc. | 500 | $27.8K | 10b5-1 | Mar 25, 2025 | Form 4 ↗ 1 day later · 500 shares | Form 144 ↗ |
| Jan 16, 2025 | Chan W. Lee Officer | AMBA Ambarella, Inc. | 1,000 | $77.2K | 10b5-1 | Jan 16, 2025 | Form 4 ↗ 1 day later · 2,000 shares | Form 144 ↗ |
| Jan 15, 2025 | Chan W. Lee Officer | AMBA Ambarella, Inc. | 1,000 | $75.9K | 10b5-1 | Jan 15, 2025 | Form 4 ↗ 2 days later · 2,000 shares | Form 144 ↗ |
| Jan 14, 2025 | Chan W. Lee Officer | AMBA Ambarella, Inc. | 1,000 | $75.7K | 10b5-1 | Jan 14, 2025 | Form 4 ↗ same day · 2,000 shares | Form 144 ↗ |
| Jan 13, 2025 | Chan W. Lee Officer | AMBA Ambarella, Inc. | 1,000 | $73.5K | 10b5-1 | Jan 13, 2025 | Form 4 ↗ 1 day later · 3,000 shares | Form 144 ↗ |
| Jan 10, 2025 | Chan W. Lee Officer | AMBA Ambarella, Inc. | 1,000 | $74.1K | 10b5-1 | Jan 10, 2025 | Form 4 ↗ 4 days later · 3,000 shares | Form 144 ↗ |
| Jan 8, 2025 | Chan W. Lee Officer | AMBA Ambarella, Inc. | 1,000 | $73.5K | 10b5-1 | Jan 8, 2025 | Form 4 ↗ same day · 3,000 shares | Form 144 ↗ |
| Jan 7, 2025 | Chan W. Lee Officer | AMBA Ambarella, Inc. | 1,000 | $78.7K | 10b5-1 | Jan 7, 2025 | Form 4 ↗ 1 day later · 3,000 shares | Form 144 ↗ |
| Jan 6, 2025 | Chan W. Lee Officer | AMBA Ambarella, Inc. | 1,000 | $79.2K | 10b5-1 | Jan 6, 2025 | Form 4 ↗ 2 days later · 3,000 shares | Form 144 ↗ |
| Jan 3, 2025 | Christopher Day Officer | AMBA Ambarella, Inc. | 1,247 | $97.4K | — | Jan 3, 2025 | Form 4 ↗ 4 days later · 1,247 shares | Form 144 ↗ |
| Jan 3, 2025 | Chan W. Lee Officer | AMBA Ambarella, Inc. | 1,000 | $75.1K | 10b5-1 | Jan 3, 2025 | Form 4 ↗ same day · 2,000 shares | Form 144 ↗ |
| Jan 2, 2025 | Chan W. Lee Officer | AMBA Ambarella, Inc. | 1,000 | $73.3K | 10b5-1 | Jan 2, 2025 | Form 4 ↗ 1 day later · 2,000 shares | Form 144 ↗ |
| Dec 26, 2024 | Christopher B. Paisley Director | AMBA Ambarella, Inc. | 1,500 | $110.7K | 10b5-1 | Dec 26, 2024 | Form 4 ↗ same day · 1,500 shares | Form 144 ↗ |
| Dec 18, 2024 | Christopher Day Officer | AMBA Ambarella, Inc. | 929 | $70.0K | — | Dec 18, 2024 | Form 4 ↗ 2 days later · 929 shares | Form 144 ↗ |
| Dec 18, 2024 | Elizabeth M. Schwarting Director | AMBA Ambarella, Inc. | 253 | $18.1K | — | Dec 18, 2024 | Form 4 ↗ 2 days later · 253 shares | Form 144 ↗ |
| Dec 9, 2024 | Ju Chi-Hong Officer | AMBA Ambarella, Inc. | 5,118 | $387.5K | — | Dec 9, 2024 | Form 4 ↗ 1 day later · 5,118 shares | Form 144 ↗ |
| Dec 2, 2024 | Christopher Day Officer | AMBA Ambarella, Inc. | 1,278 | $91.5K | — | Dec 2, 2024 | Form 4 ↗ 1 day later · 1,278 shares | Form 144 ↗ |
| Sep 30, 2024 | Christopher Day Officer | AMBA Ambarella, Inc. | 2,904 | $168.4K | — | Sep 30, 2024 | Form 4 ↗ 4 days later · 2,904 shares | Form 144 ↗ |
| Sep 25, 2024 | Christopher B. Paisley Director | AMBA Ambarella, Inc. | 500 | $26.9K | 10b5-1 | Sep 25, 2024 | — | Form 144 ↗ |
| Sep 24, 2024 | Elizabeth M. Schwarting Director | AMBA Ambarella, Inc. | 913 | $50.0K | — | Sep 24, 2024 | Form 4 ↗ 87 days later · 253 shares | Form 144 ↗ |
| Sep 3, 2024 | Feng-Ming Wang Officer | AMBA Ambarella, Inc. | 36,000 | $2.1M | — | Sep 3, 2024 | — | Form 144 ↗ |
| Sep 3, 2024 | Chen Yun-Lung Officer | AMBA Ambarella, Inc. | 5,963 | $343.2K | — | Sep 3, 2024 | — | Form 144 ↗ |
The newest 50 items, most recent first. Every row links to the notice on the SEC's site, and to the Form 4 when we found one. Updated Nov 15, 2026, 6:01 PM EST.
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