AMBARELLA INC
AMBAOther · Large accelerated filer · SEC filings ↗ · Compare ⊕
View price & chart on Yahoo Finance ↗Financials
SEC XBRL · annual| FY26 | FY25 | FY24 | FY23 | FY22 | FY21 | |
|---|---|---|---|---|---|---|
| Revenue | $390.7M | $284.9M | $226.5M | $337.6M | $331.9M | $223.0M |
| Operating income | −$82.5M | −$126.6M | −$154.6M | −$74.3M | −$29.6M | −$61.2M |
| Net income | −$75.9M | −$117.1M | −$169.4M | −$65.4M | −$26.4M | −$59.8M |
| Total assets | $798.6M | $689.0M | $657.7M | $710.2M | $657.5M | $573.3M |
| Total liabilities | $203.8M | $127.6M | $97.8M | $104.1M | $110.4M | $98.3M |
| Equity | $594.8M | $561.4M | $559.9M | $606.1M | $547.2M | $475.0M |
| EPS (diluted) | $-1.78 | $-2.84 | $-4.25 | $-1.70 | $-0.72 | $-1.72 |
| Shares out. | 43.8M | 42.4M | 41.0M | 39.6M | 38.1M | 36.2M |
Reported figures from the company's SEC filings (XBRL). Blank where a line item isn't cleanly tagged — never estimated.
Key ratios
from filings · FY2026- Operating margin
- −21.1%
- Net margin
- −19.4%
- Return on equity
- −12.8%
- Return on assets
- −9.5%
- Return on capital (ROCE)
- −13.3%
- Liabilities / assets
- 25.5%
- Debt / equity
- 0.34×
- Book value / share
- $13.58
- Revenue growth (YoY)
- 37.2%
- Net income growth (YoY)
- —
Computed from the company's own SEC figures — no market price, so these are facts, not a valuation. Book value per share is reported equity ÷ shares; it is not the stock price.
Financial health
forensic scores · FY2026- Altman Z″ (distress)
- 2.94safe
- Accruals / assets
- −18.7%clean
- Beneish M-Score
- -3.16normal
- Piotroski F-Score
- 5/9mixed
Altman Z″is a textbook bankruptcy-distress score from book values only (>2.6 safe · 1.1–2.6 grey · <1.1 distress). Accruals = (net income − operating cash flow) ÷ assets; persistently high accruals are an earnings-quality red flag. Beneish M-Scoreis an eight-ratio screen comparing this year with last (M > −1.78 = elevated manipulation-risk screen, not proof). Piotroski F-Scorecounts how many of nine fundamental-health checks pass (shown as passed / applicable; we use operating margin and total liabilities as documented proxies where the exact input isn't XBRL-tagged). Computed from SEC filings — descriptive factors, not advice or a forecast.
Quality score
EDS ScoreOur own multi-factor score from free SEC data — profitability, growth, financial strength, earnings quality, and event/ownership catalysts. No market price and no licensed model: each axis is the share of source-backed checks it passes. Descriptive factors, not advice or a forecast. What these scores mean →
Signs
● 2 warning● 5 good- Operating losses (negative operating margin)
- Reported a net loss
- Revenue is growing year-over-year
- Conservative leverage (liabilities < 50% of assets)
- Positive operating cash flow
- Clean earnings (low accruals)
- Altman Z″ in the safe zone
Derived from the company's own SEC figures (fundamentals, forensic scores, filing discipline) — descriptive factors, not advice or a forecast.
5%+ owners
SEC Schedule 13D / 13G · last 3 yrs- Vanguard Portfolio Management LlcPassive (13G)Apr 28, 2026
- Vanguard Group IncPassive (13G)Mar 26, 2026
- Blackrock, Inc.Passive (13G)Apr 23, 2025
Holders who disclosed a 5%+ stake. 13D signals intent to influence or control; 13G is a passive holding. Latest filing per holder — open it for the exact stake.
Insider transactions
SEC Form 4 · most recent| Insider | Date | Type | Shares | Price |
|---|---|---|---|---|
| Young John AlexanderOfficer — CFO | May 26, 2026 | Option exercise | 400 | $55.80 |
| Wang Feng-MingOfficer — CEO | May 26, 2026 | Sell | 17,285 | $90.38 |
| Young John AlexanderOfficer — CFO | Apr 21, 2026 | Sell | 1,971 | $60.00 |
| Young John AlexanderOfficer — CFO | Mar 17, 2026 | Option exercise | 3,556 | — |
| Chen Yun-LungOfficer — VP, Business Development and M | Mar 17, 2026 | Option exercise | 4,651 | — |
| Lee Chan WOfficer — Chief Operations Officer | Mar 17, 2026 | Option exercise | 13,678 | — |
| Ju Chi-HongOfficer — Senior VP, Systems & GM, Asia | Mar 17, 2026 | Option exercise | 9,553 | — |
| Wang Feng-MingOfficer — CEO | Mar 17, 2026 | Option exercise | 27,598 | — |
| Young John AlexanderOfficer — CFO | Mar 2, 2026 | Grant | 15,201 | $0.00 |
| Chen Yun-LungOfficer — VP, Business Development and M | Mar 2, 2026 | Grant | 7,220 | $0.00 |
| Lee Chan WOfficer — Chief Operations Officer | Mar 2, 2026 | Grant | 24,701 | $0.00 |
| Ju Chi-HongOfficer — Senior VP, Systems & GM, Asia | Mar 2, 2026 | Grant | 17,329 | $0.00 |
Headline trade per Form 4 (officers, directors, 10%+ owners). Buy/sell read from the filing's structured data — blank where a field isn't cleanly tagged.
Short interest
FINRA · bi-monthly| Settlement | Shares short | Days to cover | Δ vs prior |
|---|---|---|---|
| May 15, 2026 | 2.4M | 2.5 | -8.3% |
| Apr 30, 2026 | 2.6M | 3.5 | +2.7% |
| Apr 15, 2026 | 2.6M | 3.7 | +21.9% |
| Mar 31, 2026 | 2.1M | 2.5 | -6.4% |
| Mar 13, 2026 | 2.2M | 2.7 | +13.0% |
Shares sold short as reported to FINRA. Days-to-cover = short shares ÷ average daily volume — higher means more potential squeeze pressure.
Material events
SEC Form 8-K · most recent- Results of operationsMay 28, 2026
- Director / officer changeFeb 27, 2026
- Results of operations · Director / officer changeFeb 26, 2026
- Results of operations · Director / officer changeNov 25, 2025
- Results of operationsAug 28, 2025
- Shareholder voteJun 6, 2025
- Results of operationsMay 29, 2025
- Director / officer changeApr 4, 2025
Events the company reported on Form 8-K, labelled by the SEC item code it filed under — its own classification, not our interpretation.
Recent SEC filings
All filings ↗- SDMay 29, 2026
- 4PRIMARY DOCUMENTMay 28, 2026
- 4PRIMARY DOCUMENTMay 28, 2026
- 8-KMay 28, 2026
- 144May 26, 2026
- 144May 26, 2026
- ARSMay 15, 2026
- DEFA14AMay 15, 2026
- DEF 14AMay 15, 2026
- SCHEDULE 13GApr 28, 2026
- 4PRIMARY DOCUMENTApr 22, 2026
- 144Apr 21, 2026
- SCHEDULE 13G/AMar 26, 2026
- 10-KMar 23, 2026
- 4PRIMARY DOCUMENTMar 19, 2026
Event-driven situations (1)
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