{
  "crd_number": 107745,
  "slug": "granahan-investment-management-llc-waltham-ma-107745",
  "primary_business_name": "GRANAHAN INVESTMENT MANAGEMENT LLC",
  "legal_name": "GRANAHAN INVESTMENT MANAGEMENT LLC",
  "dbas": [],
  "city": "Waltham",
  "state": "MA",
  "country": "United States",
  "cbsa_code": "14460",
  "metro": {
    "cbsa_code": "14460",
    "common_name": "Boston",
    "msa_name": "Boston-Cambridge-Newton, MA-NH",
    "path": "/advisors/ma/boston"
  },
  "registration_type": "sec",
  "registration_status": "Approved",
  "registration_date": "1985-03-18",
  "years_registered": 41,
  "period": "2026-10-01",
  "filing_date": "2026-03-26",
  "carried_forward": false,
  "raum_total": 2362974589.0,
  "raum_discretionary": 2362974589.0,
  "raum_non_discretionary": 0.0,
  "raum_band": "1b_5b",
  "raum_band_label": "$1 billion to $5 billion",
  "total_employees": 20,
  "advisory_employees": 8,
  "client_count_bucket": "fewer_than_5_in_some_types",
  "clients_by_type": {
    "other": {
      "raum": 0.0,
      "count": 0
    },
    "charitable": {
      "raum": 294716695.0,
      "count": 9
    },
    "individuals": {
      "raum": 0.0,
      "count": 0
    },
    "banking_thrift": {
      "raum": 0.0,
      "count": 0
    },
    "state_municipal": {
      "raum": 315265949.0,
      "count": 3,
      "fewer_than_5": true
    },
    "insurance_companies": {
      "raum": 0.0,
      "count": 0
    },
    "investment_companies": {
      "raum": 533397446.0,
      "count": 3
    },
    "pension_profit_sharing": {
      "raum": 58513864.0,
      "count": 2,
      "fewer_than_5": true
    },
    "other_investment_advisers": {
      "raum": 0.0,
      "count": 0
    },
    "high_net_worth_individuals": {
      "raum": 84285505.0,
      "count": 43
    },
    "pooled_investment_vehicles": {
      "raum": 841372216.0,
      "count": 3
    },
    "corporations_other_businesses": {
      "raum": 235422914.0,
      "count": 11
    },
    "business_development_companies": {
      "raum": 0.0,
      "count": 0
    },
    "sovereign_wealth_foreign_official": {
      "raum": 0.0,
      "count": 0
    }
  },
  "compensation_types": [
    "percentage_of_aum",
    "performance_based"
  ],
  "advisory_activities": [
    "portfolio_management_businesses_institutional",
    "portfolio_management_individuals",
    "portfolio_management_investment_companies",
    "portfolio_management_pooled_vehicles"
  ],
  "wrap_fee_participant": false,
  "disclosure_yes_count": 0,
  "states_registered": [
    "CA",
    "DE",
    "MA",
    "NH",
    "OR",
    "VT",
    "WI"
  ],
  "websites": [
    "https://granahan.com",
    "https://linkedin.com/company/granahan-investment-management-inc."
  ],
  "iapd_url": "https://adviserinfo.sec.gov/firm/summary/107745",
  "city_as_filed": "WALTHAM",
  "url": "https://advisorcensus.com/firm/granahan-investment-management-llc-waltham-ma-107745",
  "display_name": "Granahan Investment Management LLC",
  "summary": "Granahan Investment Management LLC is an SEC-registered investment advisory firm in Waltham, MA, registered since 1985, reporting $1 billion to $5 billion in regulatory assets under management in its Form ADV filing dated March 26, 2026.",
  "citation": "AdvisorCensus. Granahan Investment Management LLC (CRD 107745): Form ADV filing data as of October 2026.",
  "registration_type_label": "SEC-registered investment adviser",
  "compensation_labels": [
    "A percentage of assets under your management",
    "Performance-based fees"
  ],
  "advisory_activity_labels": [
    "Portfolio management for individuals and/or small businesses",
    "Portfolio management for investment companies (and business development companies)",
    "Portfolio management for pooled investment vehicles (other than investment companies)",
    "Portfolio management for businesses (other than small businesses) or institutional clients"
  ],
  "quick_answers": [
    {
      "q": "How is Granahan Investment Management LLC compensated?",
      "a": "On its Form ADV (Item 5.E, October 2026), Granahan Investment Management LLC reports these compensation arrangements: a percentage of assets under its management; performance-based fees. The amounts are in Item 5 of its Form ADV Part 2A brochure."
    },
    {
      "q": "Where is Granahan Investment Management LLC located?",
      "a": "Granahan Investment Management LLC's principal office is in Waltham, MA, according to its Form ADV."
    },
    {
      "q": "Is Granahan Investment Management LLC registered with the SEC or a state?",
      "a": "Granahan Investment Management LLC is an SEC-registered investment advisory firm, registered since 1985. Status as filed: Approved. CRD 107745."
    },
    {
      "q": "How much does Granahan Investment Management LLC manage?",
      "a": "Granahan Investment Management LLC reports $2,362,974,589 in regulatory assets under management in its Form ADV filing dated March 26, 2026 (100% discretionary)."
    },
    {
      "q": "How have Granahan Investment Management LLC's assets and staff changed since 2021?",
      "a": "In the Form ADV data for Granahan Investment Management LLC: Regulatory assets under management: $4,574,651,316 in the October 2021 data and $2,362,974,589 in the October 2026 data, down 48%. Total employees: 18 in October 2021 and 20 in October 2026. Assets under management move with markets as well as with clients coming and going."
    },
    {
      "q": "What types of clients does Granahan Investment Management LLC serve?",
      "a": "By number of clients on Form ADV Item 5.D: high net worth individuals (43); corporations or other businesses not listed above (11); charitable organizations (9)."
    },
    {
      "q": "Which custodians does Granahan Investment Management LLC use?",
      "a": "Granahan Investment Management LLC's most recent Form ADV filing (Schedule D, Section 5.K(3)) lists Caceis Bank Ireland Branch, HSBC Bank PLC and JP Morgan as custodians holding 10% or more of its separately managed account assets."
    },
    {
      "q": "Does Granahan Investment Management LLC report any disciplinary disclosures?",
      "a": "Reports no disclosure items on Form ADV Item 11. The detail of any item is on the firm's SEC record: https://adviserinfo.sec.gov/firm/summary/107745"
    },
    {
      "q": "What changed in Granahan Investment Management LLC's recent Form ADV filings?",
      "a": "In the April 2026 filing data: Employees performing advisory functions went from 9 to 8."
    }
  ],
  "filing_history": [
    {
      "period": "2021-10-01",
      "regulatory_assets_under_management": 4574651316.0,
      "total_employees": 18,
      "filing_date": "2021-06-01"
    },
    {
      "period": "2022-10-01",
      "regulatory_assets_under_management": 4968486424.0,
      "total_employees": 19,
      "filing_date": "2022-03-28"
    },
    {
      "period": "2023-10-01",
      "regulatory_assets_under_management": 3326814170.0,
      "total_employees": 19,
      "filing_date": "2023-10-02"
    },
    {
      "period": "2024-10-01",
      "regulatory_assets_under_management": 3098868810.0,
      "total_employees": 20,
      "filing_date": "2024-03-26"
    },
    {
      "period": "2025-10-01",
      "regulatory_assets_under_management": 2451572049.0,
      "total_employees": 20,
      "filing_date": "2025-03-20"
    },
    {
      "period": "2026-10-01",
      "regulatory_assets_under_management": 2362974589.0,
      "total_employees": 20,
      "filing_date": "2026-03-26"
    }
  ],
  "recent_changes": [
    {
      "period": "2026-04-01",
      "period_label": "April 2026",
      "notes": [
        "Employees performing advisory functions went from 9 to 8."
      ]
    }
  ],
  "fees_from_brochure": null,
  "custodians": [
    {
      "name": "Caceis Bank Ireland Branch",
      "name_as_filed": "CACEIS BANK IRELAND BRANCH",
      "affiliated": false
    },
    {
      "name": "HSBC Bank PLC",
      "name_as_filed": "HSBC BANK PLC",
      "affiliated": false
    },
    {
      "name": "JP Morgan",
      "name_as_filed": "JP MORGAN",
      "affiliated": false
    }
  ],
  "custodians_note": "Custodians holding 10% or more of the firm's separately managed account assets, as filed on Form ADV (Schedule D, Section 5.K(3)). A custodian holds client assets; it does not endorse or supervise the firm. AdvisorCensus has no relationship with any custodian.",
  "markdown_url": "https://advisorcensus.com/firm/granahan-investment-management-llc-waltham-ma-107745.md",
  "clients": [
    {
      "type": "individuals",
      "label": "Individuals (other than high net worth individuals)",
      "count": 0,
      "fewer_than_5": false,
      "raum": 0.0
    },
    {
      "type": "high_net_worth_individuals",
      "label": "High net worth individuals",
      "count": 43,
      "fewer_than_5": false,
      "raum": 84285505.0
    },
    {
      "type": "banking_thrift",
      "label": "Banking or thrift institutions",
      "count": 0,
      "fewer_than_5": false,
      "raum": 0.0
    },
    {
      "type": "investment_companies",
      "label": "Investment companies",
      "count": 3,
      "fewer_than_5": false,
      "raum": 533397446.0
    },
    {
      "type": "business_development_companies",
      "label": "Business development companies",
      "count": 0,
      "fewer_than_5": false,
      "raum": 0.0
    },
    {
      "type": "pooled_investment_vehicles",
      "label": "Pooled investment vehicles (other than investment companies and business development companies)",
      "count": 3,
      "fewer_than_5": false,
      "raum": 841372216.0
    },
    {
      "type": "pension_profit_sharing",
      "label": "Pension and profit sharing plans (but not the plan participants or government pension plans)",
      "count": 2,
      "fewer_than_5": true,
      "raum": 58513864.0
    },
    {
      "type": "charitable",
      "label": "Charitable organizations",
      "count": 9,
      "fewer_than_5": false,
      "raum": 294716695.0
    },
    {
      "type": "state_municipal",
      "label": "State or municipal government entities (including government pension plans)",
      "count": 3,
      "fewer_than_5": true,
      "raum": 315265949.0
    },
    {
      "type": "other_investment_advisers",
      "label": "Other investment advisers",
      "count": 0,
      "fewer_than_5": false,
      "raum": 0.0
    },
    {
      "type": "insurance_companies",
      "label": "Insurance companies",
      "count": 0,
      "fewer_than_5": false,
      "raum": 0.0
    },
    {
      "type": "sovereign_wealth_foreign_official",
      "label": "Sovereign wealth funds and foreign official institutions",
      "count": 0,
      "fewer_than_5": false,
      "raum": 0.0
    },
    {
      "type": "corporations_other_businesses",
      "label": "Corporations or other businesses not listed above",
      "count": 11,
      "fewer_than_5": false,
      "raum": 235422914.0
    },
    {
      "type": "other",
      "label": "Other",
      "count": 0,
      "fewer_than_5": false,
      "raum": 0.0
    }
  ],
  "disclosure_line": "Reports no disclosure items on Form ADV Item 11.",
  "disclosure_items": [],
  "indexable": true,
  "suppressed": false,
  "claimed": false,
  "enhanced": false,
  "provided_by_the_firm": null,
  "source": {
    "name": "Form ADV",
    "as_of": "2026-10-01",
    "iapd_url": "https://adviserinfo.sec.gov/firm/summary/107745",
    "operator": "BH Monitor Services, LLC",
    "license": "https://creativecommons.org/licenses/by/4.0/",
    "credit": "AdvisorCensus (advisorcensus.com), from SEC Form ADV data"
  }
}