AdvisorCensus / Financial advisors / Massachusetts / Boston / Granahan Investment Management LLC
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.
Quick answers
From the filingHow is Granahan Investment Management LLC compensated?
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.
Where is Granahan Investment Management LLC located?
Granahan Investment Management LLC's principal office is in Waltham, MA, according to its Form ADV.
Is Granahan Investment Management LLC registered with the SEC or a state?
Granahan Investment Management LLC is an SEC-registered investment advisory firm, registered since 1985. Status as filed: Approved. CRD 107745.
How much does Granahan Investment Management LLC manage?
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).
How have Granahan Investment Management LLC's assets and staff changed since 2021?
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.
What types of clients does Granahan Investment Management LLC serve?
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).
Which custodians does Granahan Investment Management LLC use?
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.
Does Granahan Investment Management LLC report any disciplinary disclosures?
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
What changed in Granahan Investment Management LLC's recent Form ADV filings?
In the April 2026 filing data: Employees performing advisory functions went from 9 to 8.
From the Form ADV filing
Every figure below is as the firm filed it with regulators, as of October 2026.
How the firm is compensated
Item 5.E- A percentage of assets under your management
- Performance-based fees
Item 5.E lists how the firm is compensated for its advice; Items 5.B, 6.A, and 7.A show whether its people or related companies can also earn commissions. Percentage of assets, fixed, hourly, subscription, and performance-based fees come from clients (a performance-based fee depends on investment results); commissions come with a sale or a trade, often from the company behind the product. How fees, commissions, and other arrangements differ
Fees and minimums
Form ADV Part 2AThe brochure lists different fees for different services or strategies. See the firm's brochure (dated March 26, 2026) for its fees and any account minimum, on the SEC's IAPD site.
Regulatory assets under management
Item 5.F$2,362,974,589 as of October 2026, filing dated March 26, 2026.
A measure of scale, not skill or returns. Discretionary means the firm decides trades; non-discretionary means clients approve each one. What assets under management means
Who the firm serves
Item 5.DA firm with no individual clients is an institutional manager even if it manages billions; the mix tells you whom the practice is built around.
Advisory services
Item 5.G- 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
Registration and firm details
Items 1, 2, 5- Registration
- SEC-registered investment adviser. Status as filed: Approved.
- Registered since
- 1985 (41 years)
- Employees
- Total: 20. Performing investment advisory functions: 8.
- Wrap fee program participation
- No.
- Custodians (Schedule D, Section 5.K(3))
-
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.
- States registered or notice-filed
-
7 states or jurisdictions
SEC-registered investment advisers are examined by the SEC. SEC, state, and exempt registration
Disclosures
Item 11None Reports no disclosure items on Form ADV Item 11. View on IAPD.
Item 11 asks about criminal, regulatory, and civil events involving the firm and its advisory personnel. The detail of each yes answer is on the IAPD record. Reading a firm's disclosures
Assets and staff over time
Items 5.A, 5.F| Data period | Assets under management | Employees | Filing dated |
|---|---|---|---|
| October 2026 | $2,362,974,589 | 20 | March 26, 2026 |
| October 2025 | $2,451,572,049 | 20 | March 20, 2025 |
| October 2024 | $3,098,868,810 | 20 | March 26, 2024 |
| October 2023 | $3,326,814,170 | 19 | October 2, 2023 |
| October 2022 | $4,968,486,424 | 19 | March 28, 2022 |
| October 2021 | $4,574,651,316 | 18 | June 1, 2021 |
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.
As filed in each year's data for the same month. Assets under management move with markets as well as with clients coming and going; they measure scale, not skill or returns. Most firms update these figures once a year.
Changes in the filing
Last 12 months- April 2026
- Employees performing advisory functions went from 9 to 8.
Compared month to month from the SEC's monthly adviser data and the state compilation feed. Owners and control persons are summarized, never named.
Websites listed on Form ADV
Item 1.ISource: Form ADV, as of October 2026. Values appear as filed; a value the firm did not report is shown as "Not reported."
Cite this page
AdvisorCensus. Granahan Investment Management LLC (CRD 107745): Form ADV filing data as of October 2026. https://advisorcensus.com/firm/granahan-investment-management-llc-waltham-ma-107745