AMBARELLA (AMBA) stock: insider trades, news & valuation
Heavy selling
Close · Oct 9, 2026
$67.43
+7.2% on the day
-20.0% over 12 months
52-week range $48.65 – $95.51
Share price and insider trades
AMBA closeInsider buyInsider sale
Bought, 12 months$0
Sold, 12 months$18.1M
Insiders buying0
Insiders selling7
AMBARELLA insider trading at a glance (Oct 9, 2026): in the past 12 months, 0 insiders bought $0 and 7 sold $18.1M of AMBA stock on the open market.
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AMBA insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | — | 0 | $3.9M | 9 |
| Q2 2026 | — | 0 | $4.9M | 12 |
| Q1 2026 | — | 0 | $6.4M | 14 |
| Q4 2025 | — | 0 | $3.1M | 12 |
Valuation, profit and volume
P/E (trailing)n/aSector median —
Market value—
Profit margin—Revenue growth —
Volume vs. 50-day0.7×Last 5 sessions
Insiders' paper profit—On all tracked purchases —
Summary
Over the past 12 months, 0 AMBARELLA INC insiders reported open-market purchases totaling $0, while 7 insiders reported sales totaling $18.1M. 16 of 47 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
AMBA earnings: how the stock reacted
Each quarterly results release (SEC 8-K Item 2.02), the trend before it, insider trades in the 30 days before, and the 2-day market reaction. “E” marks releases on the chart above.
| Release | 15 days before | Insiders, 30 days before | Reaction (2 days) | Next 30 days |
|---|---|---|---|---|
| Sep 3, 2026 | -10.3% | None | -6.3%S&P +0.7% | +9.2% |
| May 28, 2026 | +15.8% | Sold $3.0M | -20.3%S&P +0.8% | -13.9% |
| Feb 26, 2026 | +6.1% | None | -14.2%S&P -1.0% | -16.4% |
| Nov 25, 2025 | -0.1% | None | -17.5%S&P +1.6% | -3.4% |
| Aug 28, 2025 | +4.0% | None | +14.7%S&P -0.2% | +1.0% |
| May 29, 2025 | +2.9% | None | -15.6%S&P +0.3% | +27.4% |
| Feb 26, 2025 | -4.1% | None | -14.7%S&P -1.5% | -19.4% |
| Nov 26, 2024 | +9.1% | None | +7.7%S&P +0.2% | +1.5% |
Most companies bar insiders from trading in the weeks before results, so pre-earnings purchases are rare and often made by directors or under pre-set plans. Past reactions don't predict future ones.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Sep 28SEC | Christopher B PaisleyDirector | Sell Plan | 25043,930 held (−1%) | $70.76 | $18K | -4.7% | — |
| Sep 21SEC | John Alexander YoungCFO | Sell Plan | 1,896107,806 held (−2%) | $67.28 | $128K | +0.2% | — |
| Sep 18SEC | Feng-ming WangCEO | Sell | 6,086767,759 held (−1%) | $64.83 | $395K | +4.0% | — |
| Sep 18SEC | John Alexander YoungCFO | Sell | 3,126109,702 held (−3%) | $64.83 | $203K | +4.0% | — |
| Sep 18SEC | Chan W LeeChief Operations Officer | Sell | 2,893154,443 held (−2%) | $64.83 | $188K | +4.0% | — |
| Sep 18SEC | Chi-hong JuSenior Vp, Systems & Gm | Sell | 2,009154,153 held (−1%) | $64.83 | $130K | +4.0% | — |
| Jul 10SEC | Yun-lung ChenVp, Business Dev. & Marketing | Sell | 5,95860,557 held (−9%) | $78.66 | $469K | -14.3% | — |
| Jul 2SEC | Feng-ming WangCEO | Sell Plan | 16,250773,607 held (−2%) | $90.08 | $1.5M | -25.1% | — |
| Jul 2SEC | Chi-hong JuSenior Vp, Systems & Gm | Sell | 10,000155,924 held (−6%) | $88.84 | $888K | -24.1% | — |
| Jun 30SEC | Christopher B PaisleyDirector | Sell Plan | 25041,029 held (−1%) | $62.01 | $16K | +8.7% | — |
| Jun 18SEC | Feng-ming WangCEO | Sell | 6,204799,857 held (−1%) | $67.87 | $421K | -0.6% | — |
| Jun 18SEC | John Alexander YoungCFO | Sell Plan | 3,186114,437 held (−3%) | $67.87 | $216K | -0.6% | — |
| Jun 18SEC | Chan W LeeChief Operations Officer | Sell | 2,951157,098 held (−2%) | $67.87 | $200K | -0.6% | — |
| Jun 18SEC | Chi-hong JuSenior Vp, Systems & Gm | Sell | 2,017165,924 held (−1%) | $67.87 | $137K | -0.6% | — |
| Jun 18SEC | John Alexander YoungCFO | Sell Plan | 1,847112,590 held (−2%) | $66.98 | $124K | +0.7% | — |
| Jun 16SEC | Yun-lung ChenVp, Business Development And | Sell | 9,85666,515 held (−13%) | $67.06 | $661K | +0.6% | — |
| May 28SEC | Feng-ming WangCEO | Sell Plan | 17,285821,276 held (−2%) | $90.38 | $1.6M | -25.4% | — |
| May 28SEC | Feng-ming WangCEO | Sell Plan | 9,150806,061 held (−1%) | $92.05 | $842K | -26.7% | — |
| May 28SEC | Feng-ming WangCEO | Sell Plan | 6,065815,211 held (−1%) | $91.23 | $553K | -26.1% | — |
| May 28SEC | John Alexander YoungCFO | Sell Plan | 400117,623 held (−0%) | $96.00 | $38K | -29.8% | — |
| Apr 22SEC | John Alexander YoungCFO | Sell Plan | 1,971117,623 held (−2%) | $60.00 | $118K | +12.4% | — |
| Mar 19SEC | Feng-ming WangCEO | Sell | 18,976830,958 held (−2%) | $52.77 | $1.0M | +27.8% | — |
| Mar 19SEC | Feng-ming WangCEO | Sell | 8,083838,561 held (−1%) | $54.14 | $438K | +24.5% | — |
| Mar 19SEC | Chan W LeeChief Operations Officer | Sell | 6,729156,370 held (−4%) | $52.77 | $355K | +27.8% | — |
| Mar 19SEC | Chi-hong JuSenior Vp, Systems & Gm, Asia | Sell | 4,729164,166 held (−3%) | $52.77 | $250K | +27.8% | — |
| Mar 19SEC | John Alexander YoungCFO | Sell | 4,577117,072 held (−4%) | $52.77 | $242K | +27.8% | — |
| Mar 19SEC | Chan W LeeChief Operations Officer | Sell | 3,641160,049 held (−2%) | $54.14 | $197K | +24.5% | — |
| Mar 19SEC | John Alexander YoungCFO | Sell | 3,038119,594 held (−2%) | $54.14 | $164K | +24.5% | — |
| Mar 19SEC | Chi-hong JuSenior Vp, Systems & Gm, Asia | Sell | 2,155167,941 held (−1%) | $54.14 | $117K | +24.5% | — |
| Mar 4SEC | Feng-ming WangCEO | Sell Plan | 32,460781,019 held (−4%) | $60.91 | $2.0M | +10.7% | — |
| Mar 4SEC | Feng-ming WangCEO | Sell Plan | 12,040768,979 held (−2%) | $61.42 | $739K | +9.8% | — |
| Mar 4SEC | Feng-ming WangCEO | Sell Plan | 2,600813,479 held (−0%) | $59.53 | $155K | +13.3% | — |
| Mar 4SEC | Feng-ming WangCEO | Sell Plan | 1,900816,079 held (−0%) | $58.77 | $112K | +14.7% | — |
| Mar 4SEC | Feng-ming WangCEO | Sell Plan | 1,000817,979 held (−0%) | $56.83 | $57K | +18.7% | — |
| Jan 23SEC | Chi-hong JuSenior Vp, Systems & Gm, Asia | Sell | 7,945149,587 held (−5%) | $70.25 | $558K | -4.0% | — |
| Jan 7SEC | Chi-hong JuSenior Vp, Systems & Gm, Asia | Sell | 7,728146,039 held (−5%) | $75.58 | $584K | -10.8% | — |
| Dec 31SEC | Chi-hong JuSenior Vp, Systems & Gm, Asia | Sell | 3,765153,767 held (−2%) | $70.32 | $265K | -4.1% | — |
| Dec 29SEC | Christopher B PaisleyDirector | Sell | 50041,279 held (−1%) | $72.18 | $36K | -6.6% | — |
| Dec 19SEC | Feng-ming WangCEO | Sell | 4,950783,979 held (−1%) | $71.82 | $356K | -6.1% | — |
| Dec 19SEC | John Alexander YoungCFO | Sell | 3,791102,738 held (−4%) | $72.96 | $277K | -7.6% | — |
| Dec 19SEC | John Alexander YoungCFO | Sell | 2,579106,529 held (−2%) | $71.82 | $185K | -6.1% | — |
| Dec 19SEC | Chan W LeeChief Operations Officer | Sell | 2,406124,566 held (−2%) | $71.82 | $173K | -6.1% | — |
| Dec 19SEC | Chi-hong JuSenior Vp, Systems & Gm, Asia | Sell | 1,342157,532 held (−1%) | $71.82 | $96K | -6.1% | — |
| Dec 18SEC | Elizabeth M SchwartingDirector | Sell | 6246,690 held (−9%) | $72.38 | $45K | -6.8% | — |
| Oct 15SEC | Chi-hong JuSenior Vp, Systems & Gm, Asia | Sell | 6,156158,874 held (−4%) | $80.96 | $498K | -16.7% | — |
| Oct 15SEC | Chi-hong JuSenior Vp, Systems & Gm, Asia | Sell | 5,057165,030 held (−3%) | $81.29 | $411K | -17.1% | — |
| Oct 8SEC | Elizabeth M SchwartingDirector | Sell | 2,6647,314 held (−27%) | $85.38 | $227K | -21.0% | — |
Insiders at AMBARELLA INC
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Feng-ming WangCEO | — | $10.1M | Sep 18, 2026 | — |
| Chi-hong JuSenior Vp, Systems & Gm | — | $3.9M | Sep 18, 2026 | — |
| John Alexander YoungCFO | — | $1.7M | Sep 21, 2026 | — |
| Yun-lung ChenVp, Business Dev. & Marketing | — | $1.1M | Jul 10, 2026 | — |
| Chan W LeeChief Operations Officer | — | $1.1M | Sep 18, 2026 | — |
| Elizabeth M SchwartingDirector | — | $273K | Dec 18, 2025 | — |
| Christopher B PaisleyDirector | — | $69K | Sep 28, 2026 | — |
AMBA stock: common questions
Are AMBARELLA INC insiders buying AMBA stock?
In the past 12 months, 0 insiders reported open-market purchases of AMBA worth $0.
Are AMBARELLA INC insiders selling AMBA stock?
7 insiders reported sales worth $18.1M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is AMBA's 52-week range?
Over the past year AMBA has traded between $48.65 and $95.51. It last closed at $67.43 on Oct 9, 2026.