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GRANAHAN INVESTMENT MANAGEMENT LLC
CRD 107745File 801-23705
APPROVED
Retail clients
Filing as of Mar 26, 2026
Feed vintage Aug 17, 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 |
|---|---|---|---|
| Aug 12, 2026 | Registration | — | APPROVED |
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.

