{
  "cik": 1822462,
  "cik_padded": "0001822462",
  "entityName": "Foghorn Therapeutics Inc.",
  "fiscal_years": [
    {
      "accn": "0001628280-26-016814",
      "filed": "2026-03-11",
      "fiscal_year": 2025,
      "form": "10-K",
      "fundamental_units": {
        "capex": "USD",
        "cash": "USD",
        "eps_diluted": "USD/shares",
        "free_cash_flow": "USD",
        "net_income": "USD",
        "operating_cash_flow": "USD",
        "operating_income": "USD",
        "revenue": "USD",
        "stockholders_equity": "USD",
        "total_assets": "USD",
        "total_liabilities": "USD"
      },
      "fundamentals": {
        "capex": 50000.0,
        "cash": 80876000.0,
        "eps_diluted": -1.18,
        "free_cash_flow": -86149000.0,
        "net_income": -74283000.0,
        "operating_cash_flow": -86099000.0,
        "operating_income": -86389000.0,
        "revenue": 30909000.0,
        "stockholders_equity": -108500000.0,
        "total_assets": 198103000.0,
        "total_liabilities": 306603000.0
      },
      "period_end": "2025-12-31",
      "ratio_units": {
        "revenue_growth_yoy": "ratio",
        "roa_avg2y": "ratio",
        "roa_period_end": "ratio",
        "roe_avg2y": "ratio"
      },
      "ratios": {
        "revenue_growth_yoy": 0.36753384656225113,
        "roa_avg2y": -0.3081738697532593,
        "roa_period_end": -0.3749716056798736,
        "roe_avg2y": 0.9645389150024671
      }
    },
    {
      "accn": "0001628280-26-016814",
      "filed": "2026-03-11",
      "fiscal_year": 2024,
      "form": "10-K",
      "fundamental_units": {
        "capex": "USD",
        "cash": "USD",
        "eps_diluted": "USD/shares",
        "free_cash_flow": "USD",
        "net_income": "USD",
        "operating_cash_flow": "USD",
        "operating_income": "USD",
        "revenue": "USD",
        "stockholders_equity": "USD",
        "total_assets": "USD",
        "total_liabilities": "USD"
      },
      "fundamentals": {
        "capex": 906000.0,
        "cash": 55454000.0,
        "eps_diluted": -1.58,
        "free_cash_flow": -101312000.0,
        "net_income": -86620000.0,
        "operating_cash_flow": -100406000.0,
        "operating_income": -102683000.0,
        "revenue": 22602000.0,
        "stockholders_equity": -45528000.0,
        "total_assets": 283982000.0,
        "total_liabilities": 329510000.0
      },
      "period_end": "2024-12-31",
      "ratio_units": {
        "revenue_growth_yoy": "ratio",
        "roa_avg2y": "ratio",
        "roa_period_end": "ratio",
        "roe_avg2y": "ratio"
      },
      "ratios": {
        "revenue_growth_yoy": -0.33825208607817303,
        "roa_avg2y": -0.30398422173792505,
        "roa_period_end": -0.3050193322111965,
        "roe_avg2y": 1.4116918463469093
      }
    },
    {
      "accn": "0001628280-26-016814",
      "filed": "2026-03-11",
      "fiscal_year": 2023,
      "form": "10-K",
      "fundamental_units": {
        "capex": "USD",
        "cash": "USD",
        "eps_diluted": "USD/shares",
        "free_cash_flow": "USD",
        "net_income": "USD",
        "operating_cash_flow": "USD",
        "operating_income": "USD",
        "revenue": "USD",
        "stockholders_equity": "USD",
        "total_assets": "USD",
        "total_liabilities": "USD"
      },
      "fundamentals": {
        "capex": 1224000.0,
        "cash": 80336000.0,
        "eps_diluted": -2.34,
        "free_cash_flow": -119330000.0,
        "net_income": -98426000.0,
        "operating_cash_flow": -118106000.0,
        "operating_income": -107906000.0,
        "revenue": 34155000.0,
        "stockholders_equity": -77190000.0,
        "total_assets": 285916000.0,
        "total_liabilities": 363106000.0
      },
      "period_end": "2023-12-31",
      "ratio_units": {
        "revenue_growth_yoy": "ratio",
        "roa_avg2y": "ratio",
        "roa_period_end": "ratio",
        "roe_avg2y": "ratio"
      },
      "ratios": {
        "revenue_growth_yoy": 0.7763157894736842,
        "roa_avg2y": -0.2849627749895411,
        "roa_period_end": -0.34424796093957666,
        "roe_avg2y": 2.5539323801863048
      }
    },
    {
      "accn": "0001628280-25-010933",
      "filed": "2025-03-06",
      "fiscal_year": 2022,
      "form": "10-K",
      "fundamental_units": {
        "capex": "USD",
        "cash": "USD",
        "eps_diluted": "USD/shares",
        "free_cash_flow": "USD",
        "net_income": "USD",
        "operating_cash_flow": "USD",
        "operating_income": "USD",
        "revenue": "USD",
        "stockholders_equity": "USD",
        "total_assets": "USD",
        "total_liabilities": "USD"
      },
      "fundamentals": {
        "capex": 1210000.0,
        "cash": 52214000.0,
        "eps_diluted": -2.62,
        "free_cash_flow": 192402000.0,
        "net_income": -108882000.0,
        "operating_cash_flow": 193612000.0,
        "operating_income": -117137000.0,
        "revenue": 19228000.0,
        "stockholders_equity": 112000.0,
        "total_assets": 404883000.0,
        "total_liabilities": 404771000.0
      },
      "period_end": "2022-12-31",
      "ratio_units": {
        "revenue_growth_yoy": "ratio",
        "roa_avg2y": "ratio",
        "roa_period_end": "ratio",
        "roe_avg2y": "ratio"
      },
      "ratios": {
        "revenue_growth_yoy": 13.577710386656557,
        "roa_avg2y": -0.23550786940454677,
        "roa_period_end": -0.268922133060662,
        "roe_avg2y": -2.2453832114906738
      }
    },
    {
      "accn": "0001628280-24-009539",
      "filed": "2024-03-07",
      "fiscal_year": 2021,
      "form": "10-K",
      "fundamental_units": {
        "capex": "USD",
        "cash": "USD",
        "eps_diluted": "USD/shares",
        "free_cash_flow": "USD",
        "net_income": "USD",
        "operating_cash_flow": "USD",
        "operating_income": "USD",
        "revenue": "USD",
        "stockholders_equity": "USD",
        "total_assets": "USD",
        "total_liabilities": "USD"
      },
      "fundamentals": {
        "capex": 3313000.0,
        "cash": 101136000.0,
        "eps_diluted": -2.73,
        "free_cash_flow": -53563000.0,
        "net_income": -101320000.0,
        "operating_cash_flow": -50250000.0,
        "operating_income": -100734000.0,
        "revenue": 1319000.0,
        "stockholders_equity": 96871000.0,
        "total_assets": 519774000.0,
        "total_liabilities": 422903000.0
      },
      "period_end": "2021-12-31",
      "ratio_units": {
        "revenue_growth_yoy": "ratio",
        "roa_avg2y": "ratio",
        "roa_period_end": "ratio",
        "roe_avg2y": "ratio"
      },
      "ratios": {
        "revenue_growth_yoy": 2.067441860465116,
        "roa_avg2y": -0.2613468701313441,
        "roa_period_end": -0.19493087380284507,
        "roe_avg2y": -0.8337104723975347
      }
    },
    {
      "accn": "0001628280-23-007297",
      "filed": "2023-03-09",
      "fiscal_year": 2020,
      "form": "10-K",
      "fundamental_units": {
        "capex": "USD",
        "cash": "USD",
        "eps_diluted": "USD/shares",
        "free_cash_flow": "USD",
        "net_income": "USD",
        "operating_cash_flow": "USD",
        "operating_income": "USD",
        "revenue": "USD",
        "stockholders_equity": "USD",
        "total_assets": "USD",
        "total_liabilities": "USD"
      },
      "fundamentals": {
        "capex": 16183000.0,
        "cash": 92795000.0,
        "eps_diluted": -6.23,
        "free_cash_flow": -47469000.0,
        "net_income": -68800000.0,
        "operating_cash_flow": -31286000.0,
        "operating_income": -68531000.0,
        "revenue": 430000.0,
        "stockholders_equity": 146187000.0,
        "total_assets": 255594000.0,
        "total_liabilities": 109407000.0
      },
      "period_end": "2020-12-31",
      "ratio_units": {
        "roa_avg2y": "ratio",
        "roa_period_end": "ratio",
        "roe_avg2y": "ratio"
      },
      "ratios": {
        "roa_avg2y": -0.495078003569167,
        "roa_period_end": -0.2691768977362536,
        "roe_avg2y": -2.365439823967269
      }
    },
    {
      "accn": "0001628280-22-021950",
      "filed": "2022-08-09",
      "fiscal_year": 2019,
      "form": "10-K",
      "fundamental_units": {
        "capex": "USD",
        "cash": "USD",
        "free_cash_flow": "USD",
        "net_income": "USD",
        "operating_cash_flow": "USD",
        "operating_income": "USD",
        "stockholders_equity": "USD",
        "total_assets": "USD",
        "total_liabilities": "USD"
      },
      "fundamentals": {
        "capex": 968000.0,
        "cash": 14981000.0,
        "free_cash_flow": -47303000.0,
        "net_income": -51128000.0,
        "operating_cash_flow": -46335000.0,
        "operating_income": -51084000.0,
        "stockholders_equity": -88016000.0,
        "total_assets": 22342000.0,
        "total_liabilities": 23814000.0
      },
      "period_end": "2019-12-31",
      "ratio_units": {
        "roe_avg2y": "ratio"
      },
      "ratios": {
        "roe_avg2y": 0.8033372875896582
      }
    },
    {
      "accn": "0001193125-21-085777",
      "filed": "2021-03-18",
      "fiscal_year": 2018,
      "form": "10-K",
      "fundamental_units": {
        "stockholders_equity": "USD"
      },
      "fundamentals": {
        "stockholders_equity": -39273000.0
      },
      "period_end": "2018-12-31",
      "ratios": {}
    }
  ],
  "latest_filing": {
    "accn": "0001628280-26-016814",
    "filed": "2026-03-11",
    "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": "2834",
  "sic_description": "Pharmaceutical Preparations",
  "source_urls": {
    "sec_companyfacts": "https://data.sec.gov/api/xbrl/companyfacts/CIK0001822462.json",
    "sec_submissions": "https://data.sec.gov/submissions/CIK0001822462.json"
  },
  "ticker": "FHTX"
}