{
  "cik": 1280263,
  "cik_padded": "0001280263",
  "entityName": "AMBARELLA INC",
  "fiscal_years": [
    {
      "accn": "0001193125-26-119321",
      "filed": "2026-03-23",
      "fiscal_year": 2026,
      "form": "10-K",
      "fundamental_units": {
        "buybacks": "USD",
        "capex": "USD",
        "cash": "USD",
        "cost_of_revenue": "USD",
        "eps_diluted": "USD/shares",
        "free_cash_flow": "USD",
        "gross_profit": "USD",
        "net_income": "USD",
        "operating_cash_flow": "USD",
        "operating_income": "USD",
        "revenue": "USD",
        "stockholders_equity": "USD",
        "total_assets": "USD",
        "total_liabilities": "USD"
      },
      "fundamentals": {
        "buybacks": 1000000.0,
        "capex": 15514000.0,
        "cash": 191019000.0,
        "cost_of_revenue": 159436000.0,
        "eps_diluted": -1.78,
        "free_cash_flow": 58005000.0,
        "gross_profit": 231266000.0,
        "net_income": -75865000.0,
        "operating_cash_flow": 73519000.0,
        "operating_income": -82527000.0,
        "revenue": 390702000.0,
        "stockholders_equity": 594789000.0,
        "total_assets": 798600000.0,
        "total_liabilities": 203811000.0
      },
      "period_end": "2026-01-31",
      "ratio_units": {
        "gross_margin": "ratio",
        "leverage": "ratio",
        "net_margin": "ratio",
        "operating_margin": "ratio",
        "revenue_growth_yoy": "ratio",
        "roa_avg2y": "ratio",
        "roa_period_end": "ratio",
        "roe_avg2y": "ratio",
        "roe_period_end": "ratio"
      },
      "ratios": {
        "gross_margin": 0.5919242798859489,
        "leverage": 0.34266101087948836,
        "net_margin": -0.1941761240024366,
        "operating_margin": -0.21122748283858286,
        "revenue_growth_yoy": 0.3715338844715918,
        "roa_avg2y": -0.10199869854688996,
        "roa_period_end": -0.09499749561733033,
        "roe_avg2y": -0.13123150732441852,
        "roe_period_end": -0.1275494334965845
      }
    },
    {
      "accn": "0001193125-26-119321",
      "filed": "2026-03-23",
      "fiscal_year": 2025,
      "form": "10-K",
      "fundamental_units": {
        "buybacks": "USD",
        "capex": "USD",
        "cash": "USD",
        "cost_of_revenue": "USD",
        "eps_diluted": "USD/shares",
        "free_cash_flow": "USD",
        "gross_profit": "USD",
        "net_income": "USD",
        "operating_cash_flow": "USD",
        "operating_income": "USD",
        "revenue": "USD",
        "stockholders_equity": "USD",
        "total_assets": "USD",
        "total_liabilities": "USD"
      },
      "fundamentals": {
        "buybacks": 0.0,
        "capex": 10381000.0,
        "cash": 144622000.0,
        "cost_of_revenue": 112535000.0,
        "eps_diluted": -2.84,
        "free_cash_flow": 23455000.0,
        "gross_profit": 172330000.0,
        "net_income": -117126000.0,
        "operating_cash_flow": 33836000.0,
        "operating_income": -126595000.0,
        "revenue": 284865000.0,
        "stockholders_equity": 561412000.0,
        "total_assets": 688968000.0,
        "total_liabilities": 127556000.0
      },
      "period_end": "2025-01-31",
      "ratio_units": {
        "gross_margin": "ratio",
        "leverage": "ratio",
        "net_margin": "ratio",
        "operating_margin": "ratio",
        "revenue_growth_yoy": "ratio",
        "roa_avg2y": "ratio",
        "roa_period_end": "ratio",
        "roe_avg2y": "ratio",
        "roe_period_end": "ratio"
      },
      "ratios": {
        "gross_margin": 0.6049532234567251,
        "leverage": 0.22720568851396122,
        "net_margin": -0.4111631825601601,
        "operating_margin": -0.44440348937215873,
        "revenue_growth_yoy": 0.2578265054708267,
        "roa_avg2y": -0.17395514557526495,
        "roa_period_end": -0.17000209008255826,
        "roe_avg2y": -0.2089142526908907,
        "roe_period_end": -0.20862753200857834
      }
    },
    {
      "accn": "0001193125-26-119321",
      "filed": "2026-03-23",
      "fiscal_year": 2024,
      "form": "10-K",
      "fundamental_units": {
        "buybacks": "USD",
        "capex": "USD",
        "cash": "USD",
        "cost_of_revenue": "USD",
        "eps_diluted": "USD/shares",
        "free_cash_flow": "USD",
        "gross_profit": "USD",
        "net_income": "USD",
        "operating_cash_flow": "USD",
        "operating_income": "USD",
        "revenue": "USD",
        "stockholders_equity": "USD",
        "total_assets": "USD",
        "total_liabilities": "USD"
      },
      "fundamentals": {
        "buybacks": 0.0,
        "capex": 11977000.0,
        "cash": 144914000.0,
        "cost_of_revenue": 89657000.0,
        "eps_diluted": -4.25,
        "free_cash_flow": 7047000.0,
        "gross_profit": 136817000.0,
        "net_income": -169417000.0,
        "operating_cash_flow": 19024000.0,
        "operating_income": -154560000.0,
        "revenue": 226474000.0,
        "stockholders_equity": 559871000.0,
        "total_assets": 657655000.0,
        "total_liabilities": 97784000.0
      },
      "period_end": "2024-01-31",
      "ratio_units": {
        "gross_margin": "ratio",
        "leverage": "ratio",
        "net_margin": "ratio",
        "operating_margin": "ratio",
        "revenue_growth_yoy": "ratio",
        "roa_avg2y": "ratio",
        "roa_period_end": "ratio",
        "roe_avg2y": "ratio",
        "roe_period_end": "ratio"
      },
      "ratios": {
        "gross_margin": 0.6041179119898973,
        "leverage": 0.17465451863018444,
        "net_margin": -0.7480637954025627,
        "operating_margin": -0.6824624460202938,
        "revenue_growth_yoy": -0.32917661415970095,
        "roa_avg2y": -0.24771283400957708,
        "roa_period_end": -0.257607712250344,
        "roe_avg2y": -0.29060541579935484,
        "roe_period_end": -0.3026000632288509
      }
    },
    {
      "accn": "0001193125-26-119321",
      "filed": "2026-03-23",
      "fiscal_year": 2023,
      "form": "10-K",
      "fundamental_units": {
        "buybacks": "USD",
        "capex": "USD",
        "cash": "USD",
        "cost_of_revenue": "USD",
        "eps_diluted": "USD/shares",
        "free_cash_flow": "USD",
        "gross_profit": "USD",
        "net_income": "USD",
        "operating_cash_flow": "USD",
        "operating_income": "USD",
        "revenue": "USD",
        "stockholders_equity": "USD",
        "total_assets": "USD",
        "total_liabilities": "USD"
      },
      "fundamentals": {
        "buybacks": 0.0,
        "capex": 15051000.0,
        "cash": 113541000.0,
        "cost_of_revenue": 128672000.0,
        "eps_diluted": -1.7,
        "free_cash_flow": 29042000.0,
        "gross_profit": 208934000.0,
        "net_income": -65386000.0,
        "operating_cash_flow": 44093000.0,
        "operating_income": -74256000.0,
        "revenue": 337606000.0,
        "stockholders_equity": 606088000.0,
        "total_assets": 710195000.0,
        "total_liabilities": 104107000.0
      },
      "period_end": "2023-01-31",
      "ratio_units": {
        "gross_margin": "ratio",
        "leverage": "ratio",
        "net_margin": "ratio",
        "operating_margin": "ratio",
        "revenue_growth_yoy": "ratio",
        "roa_avg2y": "ratio",
        "roa_period_end": "ratio",
        "roe_avg2y": "ratio",
        "roe_period_end": "ratio"
      },
      "ratios": {
        "gross_margin": 0.6188693328910031,
        "leverage": 0.1717687860508705,
        "net_margin": -0.19367546785305947,
        "operating_margin": -0.21994869759423707,
        "revenue_growth_yoy": 0.017326792343667134,
        "roa_avg2y": -0.09561173907321567,
        "roa_period_end": -0.09206767155499546,
        "roe_avg2y": -0.1133929438532721,
        "roe_period_end": -0.1078820237325273
      }
    },
    {
      "accn": "0000950170-25-046499",
      "filed": "2025-03-28",
      "fiscal_year": 2022,
      "form": "10-K",
      "fundamental_units": {
        "buybacks": "USD",
        "capex": "USD",
        "cash": "USD",
        "cost_of_revenue": "USD",
        "eps_diluted": "USD/shares",
        "free_cash_flow": "USD",
        "gross_profit": "USD",
        "net_income": "USD",
        "operating_cash_flow": "USD",
        "operating_income": "USD",
        "revenue": "USD",
        "stockholders_equity": "USD",
        "total_assets": "USD",
        "total_liabilities": "USD"
      },
      "fundamentals": {
        "buybacks": 0.0,
        "capex": 9679000.0,
        "cash": 171043000.0,
        "cost_of_revenue": 123724000.0,
        "eps_diluted": -0.72,
        "free_cash_flow": 29116000.0,
        "gross_profit": 208132000.0,
        "net_income": -26411000.0,
        "operating_cash_flow": 38795000.0,
        "operating_income": -29643000.0,
        "revenue": 331856000.0,
        "stockholders_equity": 547176000.0,
        "total_assets": 657545000.0,
        "total_liabilities": 110369000.0
      },
      "period_end": "2022-01-31",
      "ratio_units": {
        "gross_margin": "ratio",
        "leverage": "ratio",
        "net_margin": "ratio",
        "operating_margin": "ratio",
        "revenue_growth_yoy": "ratio",
        "roa_avg2y": "ratio",
        "roa_period_end": "ratio",
        "roe_avg2y": "ratio",
        "roe_period_end": "ratio"
      },
      "ratios": {
        "gross_margin": 0.6271756424473266,
        "leverage": 0.20170658069798383,
        "net_margin": -0.0795857239284509,
        "operating_margin": -0.08932488790318692,
        "revenue_growth_yoy": 0.4882102336427642,
        "roa_avg2y": -0.042915930371905026,
        "roa_period_end": -0.04016607228402619,
        "roe_avg2y": -0.051677245654266686,
        "roe_period_end": -0.04826783338450516
      }
    },
    {
      "accn": "0001564590-22-013224",
      "filed": "2024-03-29",
      "fiscal_year": 2021,
      "form": "10-K",
      "fundamental_units": {
        "buybacks": "USD",
        "capex": "USD",
        "cash": "USD",
        "cost_of_revenue": "USD",
        "eps_diluted": "USD/shares",
        "free_cash_flow": "USD",
        "gross_profit": "USD",
        "net_income": "USD",
        "operating_cash_flow": "USD",
        "operating_income": "USD",
        "revenue": "USD",
        "stockholders_equity": "USD",
        "total_assets": "USD",
        "total_liabilities": "USD"
      },
      "fundamentals": {
        "buybacks": 1000000.0,
        "capex": 4942000.0,
        "cash": 241274000.0,
        "cost_of_revenue": 87417000.0,
        "eps_diluted": -1.72,
        "free_cash_flow": 25858000.0,
        "gross_profit": 135573000.0,
        "net_income": -59786000.0,
        "operating_cash_flow": 30800000.0,
        "operating_income": -61166000.0,
        "revenue": 222990000.0,
        "stockholders_equity": 474976000.0,
        "total_assets": 573280000.0,
        "total_liabilities": 98304000.0
      },
      "period_end": "2021-01-31",
      "ratio_units": {
        "gross_margin": "ratio",
        "leverage": "ratio",
        "net_margin": "ratio",
        "operating_margin": "ratio",
        "revenue_growth_yoy": "ratio",
        "roa_avg2y": "ratio",
        "roa_period_end": "ratio",
        "roe_avg2y": "ratio",
        "roe_period_end": "ratio"
      },
      "ratios": {
        "gross_margin": 0.6079779362303243,
        "leverage": 0.20696624671562353,
        "net_margin": -0.26811067760886137,
        "operating_margin": -0.27429929593255303,
        "revenue_growth_yoy": -0.02510361471066576,
        "roa_avg2y": -0.10864690211129648,
        "roa_period_end": -0.10428760814959531,
        "roe_avg2y": -0.12954039226562433,
        "roe_period_end": -0.12587162298726673
      }
    },
    {
      "accn": "0001564590-22-013224",
      "filed": "2023-03-31",
      "fiscal_year": 2020,
      "form": "10-K",
      "fundamental_units": {
        "buybacks": "USD",
        "capex": "USD",
        "cash": "USD",
        "cost_of_revenue": "USD",
        "eps_diluted": "USD/shares",
        "free_cash_flow": "USD",
        "gross_profit": "USD",
        "net_income": "USD",
        "operating_cash_flow": "USD",
        "operating_income": "USD",
        "revenue": "USD",
        "stockholders_equity": "USD",
        "total_assets": "USD",
        "total_liabilities": "USD"
      },
      "fundamentals": {
        "buybacks": 0.0,
        "capex": 1821000.0,
        "cash": 231403000.0,
        "cost_of_revenue": 96023000.0,
        "eps_diluted": -1.35,
        "free_cash_flow": 37593000.0,
        "gross_profit": 132709000.0,
        "net_income": -44792000.0,
        "operating_cash_flow": 39414000.0,
        "operating_income": -49649000.0,
        "revenue": 228732000.0,
        "stockholders_equity": 448072000.0,
        "total_assets": 527276000.0,
        "total_liabilities": 79204000.0
      },
      "period_end": "2020-01-31",
      "ratio_units": {
        "gross_margin": "ratio",
        "leverage": "ratio",
        "net_margin": "ratio",
        "operating_margin": "ratio",
        "revenue_growth_yoy": "ratio",
        "roa_avg2y": "ratio",
        "roa_period_end": "ratio",
        "roe_avg2y": "ratio",
        "roe_period_end": "ratio"
      },
      "ratios": {
        "gross_margin": 0.5801942885123201,
        "leverage": 0.17676623399810745,
        "net_margin": -0.19582743122956126,
        "operating_margin": -0.21706188902296136,
        "revenue_growth_yoy": 0.004232376804467704,
        "roa_avg2y": -0.09011305373849873,
        "roa_period_end": -0.08494981755285655,
        "roe_avg2y": -0.10325959788418336,
        "roe_period_end": -0.09996607688050135
      }
    },
    {
      "accn": "0001564590-22-013224",
      "filed": "2022-04-01",
      "fiscal_year": 2019,
      "form": "10-K",
      "fundamental_units": {
        "buybacks": "USD",
        "cash": "USD",
        "cost_of_revenue": "USD",
        "eps_diluted": "USD/shares",
        "gross_profit": "USD",
        "net_income": "USD",
        "operating_cash_flow": "USD",
        "operating_income": "USD",
        "revenue": "USD",
        "stockholders_equity": "USD",
        "total_assets": "USD",
        "total_liabilities": "USD"
      },
      "fundamentals": {
        "buybacks": 99904000.0,
        "cash": 194047000.0,
        "cost_of_revenue": 89624000.0,
        "eps_diluted": -0.93,
        "gross_profit": 138144000.0,
        "net_income": -30447000.0,
        "operating_cash_flow": 24472000.0,
        "operating_income": -40420000.0,
        "revenue": 227768000.0,
        "stockholders_equity": 419489000.0,
        "total_assets": 466853000.0,
        "total_liabilities": 47364000.0
      },
      "period_end": "2019-01-31",
      "ratio_units": {
        "gross_margin": "ratio",
        "leverage": "ratio",
        "net_margin": "ratio",
        "operating_margin": "ratio",
        "revenue_growth_yoy": "ratio",
        "roa_avg2y": "ratio",
        "roa_period_end": "ratio",
        "roe_avg2y": "ratio",
        "roe_period_end": "ratio"
      },
      "ratios": {
        "gross_margin": 0.6065118892908573,
        "leverage": 0.11290880094591277,
        "net_margin": -0.13367549436268483,
        "operating_margin": -0.17746127638649853,
        "revenue_growth_yoy": -0.22895579583076622,
        "roa_avg2y": -0.06008276254018246,
        "roa_period_end": -0.06521753100012209,
        "roe_avg2y": -0.06753423624450468,
        "roe_period_end": -0.07258116422599878
      }
    },
    {
      "accn": "0001564590-21-016988",
      "filed": "2021-03-31",
      "fiscal_year": 2018,
      "form": "10-K",
      "fundamental_units": {
        "buybacks": "USD",
        "cash": "USD",
        "cost_of_revenue": "USD",
        "eps_diluted": "USD/shares",
        "gross_profit": "USD",
        "net_income": "USD",
        "operating_cash_flow": "USD",
        "operating_income": "USD",
        "revenue": "USD",
        "stockholders_equity": "USD",
        "total_assets": "USD",
        "total_liabilities": "USD"
      },
      "fundamentals": {
        "buybacks": 54788000.0,
        "cash": 346672000.0,
        "cost_of_revenue": 107669000.0,
        "eps_diluted": 0.55,
        "gross_profit": 187733000.0,
        "net_income": 18852000.0,
        "operating_cash_flow": 85404000.0,
        "operating_income": 24431000.0,
        "revenue": 295402000.0,
        "stockholders_equity": 482187000.0,
        "total_assets": 546649000.0,
        "total_liabilities": 64462000.0
      },
      "period_end": "2018-01-31",
      "ratio_units": {
        "gross_margin": "ratio",
        "leverage": "ratio",
        "net_margin": "ratio",
        "operating_margin": "ratio",
        "revenue_growth_yoy": "ratio",
        "roa_avg2y": "ratio",
        "roa_period_end": "ratio",
        "roe_avg2y": "ratio",
        "roe_period_end": "ratio"
      },
      "ratios": {
        "gross_margin": 0.6355170242584681,
        "leverage": 0.13368672320074992,
        "net_margin": 0.0638181190377858,
        "operating_margin": 0.08270424709379083,
        "revenue_growth_yoy": -0.048002397702845985,
        "roa_avg2y": 0.035606089222981904,
        "roa_period_end": 0.034486480355767596,
        "roe_avg2y": 0.040246749379016906,
        "roe_period_end": 0.0390968649092572
      }
    },
    {
      "accn": "0001564590-20-013513",
      "filed": "2020-03-27",
      "fiscal_year": 2017,
      "form": "10-K",
      "fundamental_units": {
        "buybacks": "USD",
        "cash": "USD",
        "cost_of_revenue": "USD",
        "eps_diluted": "USD/shares",
        "gross_profit": "USD",
        "net_income": "USD",
        "operating_cash_flow": "USD",
        "operating_income": "USD",
        "revenue": "USD",
        "stockholders_equity": "USD",
        "total_assets": "USD",
        "total_liabilities": "USD"
      },
      "fundamentals": {
        "buybacks": 20183000.0,
        "cash": 322872000.0,
        "cost_of_revenue": 105283000.0,
        "eps_diluted": 1.68,
        "gross_profit": 205014000.0,
        "net_income": 57810000.0,
        "operating_cash_flow": 113316000.0,
        "operating_income": 60363000.0,
        "revenue": 310297000.0,
        "stockholders_equity": 454634000.0,
        "total_assets": 512271000.0,
        "total_liabilities": 57637000.0
      },
      "period_end": "2017-01-31",
      "ratio_units": {
        "gross_margin": "ratio",
        "leverage": "ratio",
        "net_margin": "ratio",
        "operating_margin": "ratio",
        "roa_period_end": "ratio",
        "roe_period_end": "ratio"
      },
      "ratios": {
        "gross_margin": 0.6607024882612464,
        "leverage": 0.12677670389808066,
        "net_margin": 0.18630537839553718,
        "operating_margin": 0.19453297969364836,
        "roa_period_end": 0.11285042487277241,
        "roe_period_end": 0.12715722977164048
      }
    }
  ],
  "latest_filing": {
    "accn": "0001193125-26-119321",
    "filed": "2026-03-23",
    "form": "10-K"
  },
  "note": "Static grepcent export of verified SEC companyfacts-derived values. Monetary values are raw reported units from grepcent's resolved facts; no scaling and no FX conversion. Capex, dividends, and buybacks are reported as positive outflow magnitudes. ROE/ROA include both period-end basis (site-consistent) and average-of-two-years basis where the prior-year denominator exists.",
  "schema_version": "1",
  "sic": "3674",
  "sic_description": "Semiconductors & Related Devices",
  "source_urls": {
    "sec_companyfacts": "https://data.sec.gov/api/xbrl/companyfacts/CIK0001280263.json",
    "sec_submissions": "https://data.sec.gov/submissions/CIK0001280263.json"
  },
  "ticker": "AMBA"
}
