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GRANAHAN INVESTMENT MANAGEMENT LLC
CRD 107745File 801-23705
APPROVED
Retail clients
Filing as of Mar 26, 2026
Feed vintage Oct 1, 2026
Regulatory AUM
$2.36B
Top 25% of cohort (national)
Discretionary AUM
$2.36B
Clients
74
74 accounts
Employees
20
Above cohort median in MA
Identity & registration
ADV Item 1- Organization form
- Limited Liability Company
- Firm type
- Registered
- SEC region
- BRO
- Registration date
- Mar 18, 1985
- Principal office
- 404 WYMAN STREET, SUITE 460, WALTHAM, MA, 02451
- Phone
- 781-890-4412
- Website
- HTTP://WWW.GRANAHAN.COM
Assets & accounts
ADV Item 5F- Total regulatory AUM
- $2.36B
- Discretionary AUM
- $2.36B
- Non-discretionary AUM
- $0
- Discretionary accounts
- 74
- Non-discretionary accounts
- 0
- Total accounts
- 74
- AUM per client
- $31.9M
Clients by type
ADV Item 5D| Client type | Clients | AUM |
|---|---|---|
| Other | 11 | $235.4M |
| Investment companies | 3 | $533.4M |
| Charitable organizations | 9 | $294.7M |
| High net worth individuals | 43 | $84.3M |
| Pooled investment vehicles | 3 | $841.4M |
| Pension and profit sharing plans | Fewer than 5 | $58.5M |
| State or municipal government entities | Fewer than 5 | $315.3M |
Compensation & activities
ADV Items 5E, 5GCompensation
- Performance-based fees
- A percentage of assets under your management
Advisory activities
- Portfolio management for businesses
- Portfolio management for investment companies
- Portfolio management for pooled investment vehicles
- Portfolio management for individuals and/or small businesses
Custody
ADV Item 9- Firm Custody Cash
- No
- Firm Custody Assets
- No
- Firm Custody Clients
- No
- Firm Custody Securities
- No
- Related Person Custody Cash
- No
- Related Person Custody Assets
- No
- Related Person Custody Clients
- No
- Related Person Custody Securities
- No
Disclosure events
ADV Item 11This firm answered no to every Item 11 disclosure question in this filing.
Filed changes
| Date | Field | From | To | Change |
|---|---|---|---|---|
| Apr 1, 2026 | Custody | Yes | No | |
| Apr 1, 2026 | Clients | 85 | 74 | decreased by11 |
| Apr 1, 2026 | AUM | $2,451,572,049 | $2,362,974,589 | decreased by$88,597,460 |
| Apr 1, 2026 | Accounts | 85 | 74 | decreased by11 |
| May 1, 2025 vs Oct 1, 2022 | Employees | 19 | 20 | increased by1 |
| May 1, 2025 vs Oct 1, 2022 | Clients | 93 | 85 | decreased by8 |
| May 1, 2025 vs Oct 1, 2022 | AUM | $4,968,486,424 | $2,451,572,049 | decreased by$2,516,914,375 |
| May 1, 2025 vs Oct 1, 2022 | Accounts | 92 | 85 | decreased by7 |
| Apr 1, 2022 | Employees | 18 | 19 | increased by1 |
| Apr 1, 2022 | Clients | 74 | 93 | increased by19 |
| Apr 1, 2022 | AUM | $4,574,651,316 | $4,968,486,424 | increased by$393,835,108 |
| Apr 1, 2022 | Accounts | 74 | 92 | increased by18 |
| May 1, 2021 | Clients | 45 | 74 | increased by29 |
| May 1, 2021 | AUM | $2,207,555,102 | $4,574,651,316 | increased by$2,367,096,214 |
| May 1, 2021 | Accounts | 55 | 74 | increased by19 |
On Form 5500, an adviser usually appears as a plan service provider (Schedule C), not the plan sponsor.
See plans that list “GRANAHAN INVESTMENT” as a service provider on 5500mcp →Matched by name only — Form ADV and Form 5500 share no identifier, and names are searched loosely (“GRANAHAN INVESTMENT” may also match similarly-named firms). Confirm identity against each filing.
Every value above is reproduced from this firm's Form ADV filing. Fields the firm left blank are shown as “Not reported” rather than filled in from other sources.