AMBARELLA INC (AMBA)
Data as of , from SEC Form 4 filings.
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- Christopher B. Paisley - DirectorOpen-market sale$18K
About AMBARELLA INC (AMBA)
Ambarella Inc is a developer of low-power system-on-a-chip, or SoC, semiconductors and software for edge and physical artificial intelligence (AI) applications and intelligent automation. Its products are used in a wide variety of human viewing, computer vision for edge and physical AI applications, including a variety of video security cameras, automotive camera systems, fixed robots, autonomous mobile robots (AMRs), industrial applications, intelligent transportation systems, and consumer devices, such as action, drone and 360 degree cameras. The company operates as a single operating and reportable segment and derives substantially all of its revenue from development and sales of low-power AI-based processing and video and image processing SoC solutions.
- SANTA CLARA, CA
- 380
- 2012
- XNAS
AMBA Form 4 activity by transaction type, last 90 days
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 6 | 16,260 | $1.06M |
| Grant or award | 7 | 22,057 |
Dollar totals cover purchases and sales only (codes P and S). Grants, option exercises, gifts and tax withholding are counted in shares, because none of them is a trade at a market price.
AMBA insider transactions (Form 4)
5473 Form 4 filings on record, the earliest from Oct 4, 2024, newest first. Filing history page 1 of 3.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Christopher B. Paisley - Director | Open-market sale | Ordinary Shares | 250 | $70.76 | $18K | |
| John Alexander Young - Officer | Open-market sale | Ordinary Shares | 1,896 | $67.28 | $128K | |
 Feng-Ming Wang - Officer | Open-market sale | Ordinary Shares | 6,086 footnote F1 | $64.83 | $395K | |
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 Chi-Hong Ju - Officer | Open-market sale | Ordinary Shares | 2,009 footnote F1 | $64.83 | $130K | |
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 Chan W. Lee - Officer | Open-market sale | Ordinary Shares | 2,893 footnote F1 | $64.83 | $188K | |
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| John Alexander Young - Officer | Open-market sale | Ordinary Shares | 3,126 footnote F1 | $64.83 | $203K | |
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| Chenming Hu - Director | Grant or award | Ordinary Shares | 3,151 footnote F1 | $0.00 | - | |
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| Gregory M. Bryant - Director | Grant or award | Ordinary Shares | 3,151 footnote F1 | $0.00 | - | |
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 Chantelle Yvette Breithaupt - Director | Grant or award | Ordinary Shares | 3,151 footnote F1 | $0.00 | - | |
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| Elizabeth M. Schwarting - Director | Grant or award | Ordinary Shares | 3,151 footnote F1 | $0.00 | - | |
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| Hsiao-Wuen Hon - Director | Grant or award | Ordinary Shares | 3,151 footnote F1 | $0.00 | - | |
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| David Jeffrey Richardson - Director | Grant or award | Ordinary Shares | 3,151 footnote F1 | $0.00 | - | |
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| Christopher B. Paisley - Director | Grant or award | Ordinary Shares | 3,151 footnote F1 | $0.00 | - | |
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 Yun-Lung Chen - Officer | Open-market sale | Ordinary Shares | 5,958 | $78.66 | $469K | |
| Chi-Hong Ju - Officer | Open-market sale | Ordinary Shares | 10,000 | $88.84 footnote F1 | $888K | |
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| Feng-Ming Wang - Officer | Open-market sale | Ordinary Shares | 16,250 | $90.08 footnote F2 | $1.46M | |
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| Christopher B. Paisley - Director | Open-market sale | Ordinary Shares | 250 | $62.01 | $16K | |
| John Alexander Young - Officer | Open-market sale | Ordinary Shares | 3,186 footnote F1 | $67.87 | $216K | |
| John Alexander Young - Officer | Open-market sale | Ordinary Shares | 1,847 | $66.98 | $124K | |
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| Chan W. Lee - Officer | Open-market sale | Ordinary Shares | 2,951 footnote F1 | $67.87 | $200K | |
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| Chi-Hong Ju - Officer | Open-market sale | Ordinary Shares | 2,017 footnote F1 | $67.87 | $137K | |
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| Feng-Ming Wang - Officer | Gift | Ordinary Shares | 10,000 | $0.00 | - | |
| Feng-Ming Wang - Officer | Open-market sale | Ordinary Shares | 6,204 footnote F1 | $67.87 | $421K | |
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| Yun-Lung Chen - Officer | Open-market sale | Ordinary Shares | 9,856 | $67.06 footnote F1 | $661K | |
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| John Alexander Young - Officer | Option exercise | Ordinary Shares | 400 | $55.80 | $22K | |
| John Alexander Young - Officer | Open-market sale | Ordinary Shares | 400 | $96.00 | $38K | |
| John Alexander Young - Officer | Option exercise | Non-Qualified Stock Option (right to buy) | 400 | $0.00 | - | |
| Feng-Ming Wang - Officer | Open-market sale | Ordinary Shares | 17,285 | $90.38 footnote F2 | $1.56M | |
| Feng-Ming Wang - Officer | Open-market sale | Ordinary Shares | 6,065 | $91.23 footnote F3 | $553K | |
| Feng-Ming Wang - Officer | Open-market sale | Ordinary Shares | 9,150 | $92.05 footnote F4 | $842K | |
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| John Alexander Young - Officer | Open-market sale | Ordinary Shares | 1,971 | $60.00 | $118K | |
| John Alexander Young - Officer | Option exercise | Ordinary Shares | 3,556 | - footnote F1 | - | |
| John Alexander Young - Officer | Open-market sale | Ordinary Shares | 4,577 footnote F3 | $52.77 | $242K | |
| John Alexander Young - Officer | Grant or award | Ordinary Shares | 5,560 footnote F4 | $0.00 | - | |
| John Alexander Young - Officer | Open-market sale | Ordinary Shares | 3,038 footnote F3 | $54.14 | $164K | |
| John Alexander Young - Officer | Option exercise | Performance Stock Units | 3,556 | $0.00 | - | |
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| Yun-Lung Chen - Officer | Option exercise | Ordinary Shares | 4,651 | - footnote F1 | - | |
| Yun-Lung Chen - Officer | Grant or award | Ordinary Shares | 2,849 footnote F2 | $0.00 | - | |
| Yun-Lung Chen - Officer | Option exercise | Performance Stock Units | 4,651 | $0.00 | - | |
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| Chan W. Lee - Officer | Open-market sale | Ordinary Shares | 6,729 footnote F3 | $52.77 | $355K | |
| Chan W. Lee - Officer | Grant or award | Ordinary Shares | 7,320 footnote F4 | $0.00 | - | |
| Chan W. Lee - Officer | Open-market sale | Ordinary Shares | 3,641 footnote F3 | $54.14 | $197K | |
| Chan W. Lee - Officer | Option exercise | Performance Stock Units | 13,678 | $0.00 | - | |
| Chan W. Lee - Officer | Option exercise | Ordinary Shares | 13,678 | - footnote F1 | - | |
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| Chi-Hong Ju - Officer | Option exercise | Ordinary Shares | 9,553 | - footnote F1 | - | |
| Chi-Hong Ju - Officer | Open-market sale | Ordinary Shares | 4,729 footnote F3 | $52.77 | $250K | |
| Chi-Hong Ju - Officer | Grant or award | Ordinary Shares | 5,930 footnote F4 | $0.00 | - | |
| Chi-Hong Ju - Officer | Open-market sale | Ordinary Shares | 2,155 footnote F3 | $54.14 | $117K | |
| Chi-Hong Ju - Officer | Option exercise | Performance Stock Units | 9,553 | $0.00 | - | |
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| Feng-Ming Wang - Officer | Option exercise | Ordinary Shares | 27,598 | - footnote F1 | - | |
| Feng-Ming Wang - Officer | Open-market sale | Ordinary Shares | 18,976 footnote F3 | $52.77 | $1.00M | |
| Feng-Ming Wang - Officer | Grant or award | Ordinary Shares | 15,686 footnote F4 | $0.00 | - | |
| Feng-Ming Wang - Officer | Open-market sale | Ordinary Shares | 8,083 footnote F3 | $54.14 | $438K | |
| Feng-Ming Wang - Officer | Option exercise | Performance Stock Units | 27,598 | $0.00 | - | |
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Item 2.02, 9.01
Item 5.02, 5.07, 9.01
Item 2.02, 9.01
Item 5.02
Recent AMBA Form 144 notices of proposed sale
3An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| PAISLEY CHRISTOPHER B | Director | 250 | $18K | View on EDGAR | |
| JOHN YOUNG | Officer | 1,896 |
AMBA insider trading FAQ
What is the latest insider trade for AMBA?
AMBARELLA INC (AMBA) had 13 insider filings in the last 90 days, with the most recent on 2026-09-28. The full record for AMBA runs to 73 Form 4 filings, the earliest from 2024-10-04. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying AMBA stock?
No insider purchases of AMBA were filed in the last 90 days.
How many insiders are selling AMBA stock?
6 insider sales of AMBA were filed in the last 90 days, totaling $1.06M.
Where can I see AMBA SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects AMBA Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Information Technology companies with insider activity
Recent insider filings
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - Christopher B. Paisley view on EDGAR
- - John Alexander Young view on EDGAR
- - Feng-Ming Wang view on EDGAR
- - Chi-Hong Ju view on EDGAR
- - Chan W. Lee view on EDGAR
- - John Alexander Young view on EDGAR
- - Chenming Hu view on EDGAR
- - Gregory M. Bryant view on EDGAR
- - Chantelle Yvette Breithaupt view on EDGAR
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Learn more
- Insider selling: signal or noise?
- Why most insider sales are routine, and the few patterns worth a second look.
- Form 144 vs Form 4
- A Form 144 announces a planned sale; the Form 4 reports it after it happens.
- Insider activity in Information Technology
- Where AMBA's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
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