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RIA / WealthRegistered adviserasset managerSEC registeredRAUM 1b 10b

IMPAX ASSET MANAGEMENT

IMPAX ASSET MANAGEMENT (AIFM) LTD., CRD 171783

LONDON

This is the graph view. The full profile, with its team, deals and sources, is on RIA / Wealth Management.Open the full profile →

Search this name across graphsid dfx:ria:f3256eef-a1d3-1195-b81d-fb860491023c

Data as of Jul 30, 2026 (this record's last observation) from federal regulator filings. Page built Sep 21, 2026, 12:46 AM UTC and rebuilt at most every 15 minutes.

Relationships: 15
Dated events: 15
On other graphs: 1
Observed: Jun 11, 2014 to Jul 30, 2026
27 observations

Across DFX

same identity by shared identifier, citation, or a bridge measured by hand

Private Equityidentity

Impax Asset Management

Private equity manager · shared crd

Facts

fact = as filed or announced; derived = computed by DFX; estimate = a band, never a point

Firm class: asset managerderivedprivate_client_share=0.0 fund_share=1.0 institutional_share=0.0 related_bd=false related_bank=false bd_reps=0.0
Regulatory AUM: $2.0BItem 5.F on the latest filing (2026-07-30); as reported, and an affiliate's assets may be counted again on its own filing
Discretionary RAUM: $2.0B
Private client RAUM: $0derivedItem 5.D individuals plus high net worth individuals
Private client share: 0%derivedprivate client RAUM over total RAUM
Advisors on IAPD: 0
Employees: 165
Advisory employees: 53
Offices: 0Schedule D 1.F, beyond the principal office
Accounts: 4
Private funds: 2Schedule D 7.B(1)
SEC number: 801-79931
CRD: 171783
Filings on the tape: 27
First filed: Jun 11, 2014
Latest filed: Jul 30, 2026
Organised: Other (specify)
Website: impaxam.com

Private funds

Schedule D 7.B(1); gross asset value as reported, never fund size; reporting ends 2024-12-31

Fund	Type	Reported GAV	As of	Owners	First reported	Status	Form D file
GLOBAL RESOURCE OPTIMIZATION FUND LP	Other Private Fund	$343M	Dec 23, 2024	21	Dec 22, 2011	reported	021-354505
IMPAX GLOBAL OPPORTUNITIES FUND, L.P.	Other Private Fund	$67.3M	Dec 23, 2024	4	Dec 23, 2021	reported	n/a
NEW ENERGY INVESTORS III LP	Private Equity Fund	$10.7M	Dec 23, 2024	5	Dec 21, 2018	reported	021-314286
IMPAX NEW ENERGY INVESTORS II LP	Private Equity Fund	$3.6M	Dec 23, 2024	20	Apr 23, 2012	reported	021-165441
IMPAX FUNDAMENTAL LONG-TERM OPPORTUNITIES IN WATER FUND LP	Other Private Fund	$0	Oct 3, 2016	0	Jun 11, 2014	dropped	n/a

Owners and control persons

Schedule A and B as filed; ownership codes are the form's bands (NA under 5%, A 5 to 10%, B 10 to 25%, C 25 to 50%, D 50 to 75%, E over 75%); people are listed as filed and never merged by name

Owner	Title	Ownership code	Control person	Acquired	First seen	Last seen
BOESE, JOHN, AQUINAS	CHIEF COMPLIANCE OFFICER	Na	yes	11/2020	Dec 24, 2020	Dec 23, 2024
Cockburn, Karen	DIRECTOR, CHIEF FINANCIAL OFFICER	Na	yes	12/2022	Dec 13, 2022	Dec 23, 2024
IMPAX ASSET MANAGEMENT GROUP PLC	Parent	E	yes	06/1998	Jun 11, 2014	Dec 23, 2024
SIMM, IAN, RICHARD	DIRECTOR, CHIEF EXECUTIVE OFFICER	Na	yes	08/1998	Jun 11, 2014	Dec 23, 2024
von Preyss, Daniel, Gunter	Director	Na	yes	03/2020	Mar 26, 2020	Dec 23, 2024

Affiliates (Item 7.A)

as filed on Item 7.A; a related person with a CRD on the graph links to its own page

Related person	Type	Class on the graph	Its RAUM	Control	Common control	State
IMPAX ASSET MANAGEMENT, LTD.	n/a	Asset manager	$26B	N	yes	n/a
IMPAX ASSET MANAGEMENT LLC	n/a	Asset manager	$8.9B	N	yes	n/a
IMPAX ASSET MANAGEMENT (HONG KONG) LIMITED	n/a	n/a	n/a	N	yes	n/a
IMPAX ASSET MANAGEMENT IRELAND LTD	n/a	n/a	n/a	N	yes	n/a
IMPAX GLOBAL OPPORTUNITIES (GP) LIMITED	n/a	n/a	n/a	Y	yes	n/a
IMPAX GLOBAL RESOURCE OPTIMIZATION (GP) LIMITED	n/a	n/a	n/a	Y	yes	n/a
INEI I (UK) LLP	n/a	n/a	n/a	N	yes	n/a
INEI II GP (UK) LLP	n/a	n/a	n/a	Y	yes	n/a
INEI III GP (UK) LLP	n/a	n/a	n/a	Y	yes	n/a
INEI IV GP (UK) LLP	n/a	n/a	n/a	N	yes	n/a

Regulatory AUM by fiscal year

annual amendments (and the roster's annual snapshot) as filed; where a year was amended twice the later filing draws the line

Fiscal year	Filed	RAUM	Discretionary	Employees	Advisory staff	Offices	Private funds	Fund GAV
2024	Dec 23, 2024	$2.4B	$2.4B	187	58	0	4	$425M
2023	Dec 19, 2023	$2.5B	$2.5B	175	43	0	4	$545M
2022	Dec 13, 2022	$2.4B	$2.4B	155	47	0	4	$557M
2021	Dec 23, 2021	$3.1B	$3.1B	133	35	2	4	$733M
2020	Dec 24, 2020	$1.9B	$1.9B	119	38	2	3	$371M
2019	Dec 23, 2019	$1.4B	$1.4B	94	33	2	3	$319M
2018	Dec 21, 2018	$1.4B	$1.4B	80	27	2	3	$284M
2017	Dec 21, 2017	$1.4B	$1.4B	70	25	2	2	$375M
2016	Dec 21, 2016	$860M	$860M	65	26	n/a	2	$254M
2015	Dec 22, 2015	$1.0B	$1.0B	62	23	n/a	3	$445M
2014	Dec 25, 2014	$1.2B	$1.2B	62	28	n/a	3	$469M

Growth

derived from consecutive annual filings; RAUM as reported

Latest fiscal year	RAUM	A year earlier	1y change	Three years earlier	3y CAGR	Employees	A year earlier	Offices	A year earlier
2024	$2.0B	$2.5B	-20.8%	$3.1B	-13.4%	165	175	0	0

Relationships

Affiliated with (5)

→ IMPAX ASSET MANAGEMENT LLCRegistered adviserother investment adviser, common control
factForm ADV
→ IMPAX ASSET MANAGEMENT, LTD.Registered adviserother investment adviser, common control
factForm ADV
← IMPAX ASSET MANAGEMENT LLCRegistered adviserother investment adviser, common control
factForm ADV
← IMPAX ASSET MANAGEMENT, LTD.Registered adviserother investment adviser, common control
factForm ADV
← PAX ELLEVATE MANAGEMENT LLCRegistered adviserother investment adviser, common control
factForm ADV

Advises (5)

→ GLOBAL RESOURCE OPTIMIZATION FUND LPPrivate fundOther Private Fund, IA
Dec 22, 2011 to presentfactForm ADV
→ NEW ENERGY INVESTORS III LPPrivate fundPrivate Equity Fund, IA
Dec 21, 2018 to presentfactForm ADV
→ IMPAX NEW ENERGY INVESTORS II LPPrivate fundPrivate Equity Fund, IA
Apr 23, 2012 to presentfactForm ADV
→ IMPAX GLOBAL OPPORTUNITIES FUND, L.P.Private fundOther Private Fund, IA
Dec 23, 2021 to presentfactForm ADV
→ IMPAX FUNDAMENTAL LONG-TERM OPPORTUNITIES IN WATER FUND LPPrivate fundOther Private Fund, IA, no longer reported
Jun 11, 2014 to Oct 3, 2016factForm ADV

Controls (5)

← BOESE, JOHN, AQUINASOwnerCHIEF COMPLIANCE OFFICER, ownership code NA, individual
Dec 24, 2020 to Dec 23, 2024factForm ADV
← SIMM, IAN, RICHARDOwnerDIRECTOR, CHIEF EXECUTIVE OFFICER, ownership code NA, individual
Jun 11, 2014 to Dec 23, 2024factForm ADV
← von Preyss, Daniel, GunterOwnerDIRECTOR, ownership code NA, individual
Mar 26, 2020 to Dec 23, 2024factForm ADV
← Cockburn, KarenOwnerDIRECTOR, CHIEF FINANCIAL OFFICER, ownership code NA, individual
Dec 13, 2022 to Dec 23, 2024factForm ADV
← IMPAX ASSET MANAGEMENT GROUP PLCOwnerPARENT, ownership code E, foreign entity
Jun 11, 2014 to Dec 23, 2024factForm ADV

Dated events

Occurred
Dec 23, 2024
Control person left
Bruce Jenkyn-Jones (Director) no longer on Schedule A of Impax Asset Management (listed 2023-12-19, absent 2024-12-23)
Form ADVobserved 5 days ago
Occurred
Dec 23, 2024
Control person left
Mary Catherine Bremner (Director, Chief Strategy Officer) no longer on Schedule A of Impax Asset Management (listed 2023-12-19, absent 2024-12-23)
Form ADVobserved 5 days ago
Occurred
Dec 19, 2023
Control person left
Patricia Mary Alexander (Director) no longer on Schedule A of Impax Asset Management (listed 2023-01-18, absent 2023-12-19)
Form ADVobserved 5 days ago
Occurred
Jan 18, 2023
Control person joined
Patricia Mary Alexander (Director) appeared on Schedule A of Impax Asset Management
Form ADVobserved 5 days ago
Occurred
Dec 13, 2022
Control person left
David Charles Ridge (Chief Financial Officer) no longer on Schedule A of Impax Asset Management (listed 2022-04-12, absent 2022-12-13)
Form ADVobserved 5 days ago
Occurred
Dec 13, 2022
Control person joined
Karen Cockburn (Director, Chief Financial Officer) appeared on Schedule A of Impax Asset Management
Form ADVobserved 5 days ago
Occurred
Apr 12, 2022
Control person joined
Mary Catherine Bremner (Director, Chief Strategy And Operations Officer) appeared on Schedule A of Impax Asset Management
Form ADVobserved 5 days ago
Occurred
Dec 23, 2021
Regulatory AUM changed
Impax Asset Management reported RAUM $3.1B, up 60% from $1.9B (2021-03-12 to 2021-12-23)
Form ADVobserved 5 days ago
$1.2B
Occurred
Mar 12, 2021
Control person left
Francis Joseph Keefe (Director) no longer on Schedule A of Impax Asset Management (listed 2021-01-27, absent 2021-03-12)
Form ADVobserved 5 days ago
Occurred
Dec 24, 2020
Regulatory AUM changed
Impax Asset Management reported RAUM $1.9B, up 37% from $1.4B (2020-03-26 to 2020-12-24)
Form ADVobserved 5 days ago
$520M
Occurred
Dec 24, 2020
Control person left
Keith Falconer (Director) no longer on Schedule A of Impax Asset Management (listed 2020-03-26, absent 2020-12-24)
Form ADVobserved 5 days ago
Occurred
Dec 24, 2020
Control person joined
Aquinas John Boese (Chief Compliance Officer) appeared on Schedule A of Impax Asset Management
Form ADVobserved 5 days ago
Occurred
Mar 26, 2020
Control person left
Van Egmond Peter Rossbach (Director) no longer on Schedule A of Impax Asset Management (listed 2019-12-23, absent 2020-03-26)
Form ADVobserved 5 days ago
Occurred
Mar 26, 2020
Control person joined
Gunter Daniel Von Preyss (Director) appeared on Schedule A of Impax Asset Management
Form ADVobserved 5 days ago
Occurred
Jun 11, 2014
First Form ADV filing
Impax Asset Management filed its initial SEC registration (Form ADV)
Form ADVobserved 5 days ago

Provenance

Graph: RIA / Wealth Management
Canonical id: dfx:ria:f3256eef-a1d3-1195-b81d-fb860491023c
First observed: Jun 11, 2014
Last observed: Jul 30, 2026 53 days ago
Source families: Federal regulator filings
3 registered feeds stand behind this record; each fact above carries its own dates and, where the publisher serves one, its document.
Resolution: Identity across graphs by shared identifier (CRD, CIK, EIN, ADV fund id, individual CRD) or citation; a name match is shown as a candidate and never merged.

IMPAX ASSET MANAGEMENT

IMPAX ASSET MANAGEMENT (AIFM) LTD., CRD 171783

LONDON

This is the graph view. The full profile, with its team, deals and sources, is on RIA / Wealth Management.Open the full profile →

Search this name across graphsid dfx:ria:f3256eef-a1d3-1195-b81d-fb860491023c

Data as of Jul 30, 2026 (this record's last observation) from federal regulator filings. Page built Sep 21, 2026, 12:46 AM UTC and rebuilt at most every 15 minutes.

Fund

Type

Reported GAV

As of

Owners

First reported

Status

Form D file

GLOBAL RESOURCE OPTIMIZATION FUND LP

Other Private Fund

$343M

Dec 23, 2024

Dec 22, 2011

reported

021-354505

IMPAX GLOBAL OPPORTUNITIES FUND, L.P.

Other Private Fund

$67.3M

Dec 23, 2024

Dec 23, 2021

reported

n/a

NEW ENERGY INVESTORS III LP

Private Equity Fund

$10.7M

Dec 23, 2024

Dec 21, 2018

reported

021-314286

IMPAX NEW ENERGY INVESTORS II LP

Private Equity Fund

$3.6M

Dec 23, 2024

Apr 23, 2012

reported

021-165441

IMPAX FUNDAMENTAL LONG-TERM OPPORTUNITIES IN WATER FUND LP

Other Private Fund

Oct 3, 2016

Jun 11, 2014

dropped

n/a

Owner

Title

Ownership code

Control person

Acquired

First seen

Last seen

BOESE, JOHN, AQUINAS

CHIEF COMPLIANCE OFFICER

yes

11/2020

Dec 24, 2020

Dec 23, 2024

Cockburn, Karen

DIRECTOR, CHIEF FINANCIAL OFFICER

yes

12/2022

Dec 13, 2022

Dec 23, 2024

IMPAX ASSET MANAGEMENT GROUP PLC

Parent

yes

06/1998

Jun 11, 2014

Dec 23, 2024

SIMM, IAN, RICHARD

DIRECTOR, CHIEF EXECUTIVE OFFICER

yes

08/1998

Jun 11, 2014

Dec 23, 2024

von Preyss, Daniel, Gunter

Director

yes

03/2020

Mar 26, 2020

Dec 23, 2024

Related person

Type

Class on the graph

Its RAUM

Control

Common control

State

IMPAX ASSET MANAGEMENT, LTD.

n/a

Asset manager

$26B

yes

n/a

IMPAX ASSET MANAGEMENT LLC

n/a

Asset manager

$8.9B

yes

n/a

IMPAX ASSET MANAGEMENT (HONG KONG) LIMITED

n/a

yes

n/a

IMPAX ASSET MANAGEMENT IRELAND LTD

n/a

yes

n/a

IMPAX GLOBAL OPPORTUNITIES (GP) LIMITED

n/a

yes

n/a

IMPAX GLOBAL RESOURCE OPTIMIZATION (GP) LIMITED

n/a

yes

n/a

INEI I (UK) LLP

n/a

yes

n/a

INEI II GP (UK) LLP

n/a

yes

n/a

INEI III GP (UK) LLP

n/a

yes

n/a

INEI IV GP (UK) LLP

n/a

yes

n/a

Fiscal year

Filed

RAUM

Discretionary

Employees

Advisory staff

Offices

Private funds

Fund GAV

2024

Dec 23, 2024

$2.4B

187

$425M

2023

Dec 19, 2023

$2.5B

175

$545M

2022

Dec 13, 2022

$2.4B

155

$557M

2021

Dec 23, 2021

$3.1B

133

$733M

2020

Dec 24, 2020

$1.9B

119

$371M

2019

Dec 23, 2019

$1.4B

$319M

2018

Dec 21, 2018

$1.4B

$284M

2017

Dec 21, 2017

$1.4B

$375M

2016

Dec 21, 2016

$860M

n/a

$254M

2015

Dec 22, 2015

$1.0B

n/a

$445M

2014

Dec 25, 2014

$1.2B

n/a

$469M

Latest fiscal year

RAUM

A year earlier

1y change

Three years earlier

3y CAGR

Employees

A year earlier

Offices

A year earlier

2024

$2.0B

$2.5B

-20.8%

$3.1B

-13.4%

165

175