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IMPAX ASSET MANAGEMENT LLC
CRD 114335File 801-8517
APPROVED
Filing as of Sep 29, 2026
Feed vintage Oct 1, 2026
Regulatory AUM
$8.94B
Top 10% of cohort (national)
Discretionary AUM
$8.94B
Clients
27
27 accounts
Employees
93
Top 10% of cohort in NH
Identity & registration
ADV Item 1- Organization form
- Limited Liability Company
- Firm type
- Registered
- SEC region
- BRO
- Registration date
- Mar 24, 1972
- Principal office
- 30 PENHALLOW STREET, SUITE 400, PORTSMOUTH, NH, 03801
- Phone
- 603-431-8022
- Website
- https://impaxam.com/
Assets & accounts
ADV Item 5F- Total regulatory AUM
- $8.94B
- Discretionary AUM
- $8.94B
- Non-discretionary AUM
- $0
- Discretionary accounts
- 27
- Non-discretionary accounts
- 0
- Total accounts
- 27
- AUM per client
- $331.2M
Clients by type
ADV Item 5D| Client type | Clients | AUM |
|---|---|---|
| Investment companies | 12 | $7.79B |
| Other investment advisers | 8 | $128.4M |
| Pooled investment vehicles | 7 | $1.02B |
Compensation & activities
ADV Items 5E, 5GCompensation
- A percentage of assets under your management
Advisory activities
- Portfolio management for businesses
- Portfolio management for investment companies
- Portfolio management for pooled investment vehicles
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 |
|---|---|---|---|---|
| Jan 1, 2026 | Employees | 113 | 93 | decreased by20 |
| Jan 1, 2026 | Clients | 19 | 27 | increased by8 |
| Jan 1, 2026 | AUM | $9,643,533,263 | $8,942,785,264 | decreased by$700,747,999 |
| Jan 1, 2026 | Accounts | 19 | 27 | increased by8 |
| May 1, 2025 vs Oct 1, 2022 | Employees | 77 | 113 | increased by36 |
| May 1, 2025 vs Oct 1, 2022 | Clients | 17 | 19 | increased by2 |
| May 1, 2025 vs Oct 1, 2022 | AUM | $8,533,503,708 | $9,643,533,263 | increased by$1,110,029,555 |
| May 1, 2025 vs Oct 1, 2022 | Accounts | 17 | 19 | increased by2 |
| Jan 1, 2022 | Employees | 62 | 77 | increased by15 |
| Jan 1, 2022 | AUM | $5,332,933,707 | $8,533,503,708 | increased by$3,200,570,001 |
| Apr 1, 2021 | Registration | — | APPROVED |
On Form 5500, an adviser usually appears as a plan service provider (Schedule C), not the plan sponsor.
See plans that list “IMPAX ASSET” as a service provider on 5500mcp →Matched by name only — Form ADV and Form 5500 share no identifier, and names are searched loosely (“IMPAX ASSET” 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.