Impax Asset Management Llc
- Regulatory AUM
- $8.9B
- Discretionary
- $8.9B
- Clients
- 27
- Avg AUM / client
- $331M
- Accounts
- 27
- Employees
- 93
AUM over time
Annual snapshots from Form ADV filings · as of Dec 22, 2025
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| Investment companies | 12 | $7.8B | 87.1% |
| Pooled investment vehicles (non-investment companies) | 7 | $1.0B | 11.5% |
| Other investment advisers | 8 | $128M | 1.44% |
People (6)
roster as of Jul 20, 2026| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| Boese, John, Aquinas | Chief Compliance Officer | Jan 2006 (21y) | Less than 5% | |
| Simm, Ian | Elected Manager | Jan 2018 (9y) | Less than 5% | |
| Cockburn, Karen | Elected Manager | Dec 2022 (4y) | Less than 5% | |
| Farrington, Edward, Joseph | President, Elected Manager | Feb 2024 (3y) | Less than 5% | |
| Pearl, Vanessa, Megan | Chief Financial Officer, Elected Manager | Apr 2024 (2y) | Less than 5% | |
| Christopher Hadley Brown | Registered representative | Jun 2004 (22y) |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| Impax Asset Management Group Plc | Parent | Jan 2018 | A | 75% or more |
Undisclosed: 0% – 25% of the firm is not attributable from the filed Schedule A bands.
Roster from the IAPD representatives feed; ownership and acquisition dates from Form ADV Schedule A/B. "Since" is the earliest filed registration or acquisition date.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 12/22/2025 | 1.34 MB | View · PDF · Source ↗ |
Archived copies of the firm's regulatory filings, versioned by content hash.
Disciplinary disclosures
No disciplinary events reported on the firm's latest Form ADV filing.
How they charge
- • Percentage of assets under management
Services
- • Portfolio management for investment companies
- • Portfolio management for pooled investment vehicles
- • Portfolio management for businesses/institutional clients
Custody
Reported custodians
- State Street $604M (7% of AUM) Dec 2025
- BNY Mellon $99.0M (1% of AUM) Dec 2025
- Caceis Bank $81.1M (1% of AUM) Dec 2025
- Desjardins Trust Inc. $79.7M (1% of AUM) Jan 2023
- Cibc Mellon Trust Company $44.2M (1% of AUM) Jan 2023
Amounts as reported in ADV Item 5.K.(3) (custodians holding 10%+ of SMA assets).
Firm reports it does not have custody of client funds or securities (Item 9.A).
Source
All data on this page comes from this firm's Form ADV filings, reproduced without modification. Latest filing: Dec 22, 2025.
View current Form ADV (SEC/IAPD) ↗