About the Company

Independence meets Global Scale.

With our network partners around the globe, we deliver bespoke insurance solutions for industrial and commercial clients and manage complex risk landscapes.

Founded in 2005, UnisonSteadfast builds on the principles of partnership, independence, and professional excellence established by the former UNISON network (by Johnson & Higgins).

Our three pillars

International expertise

1

With over 900 partners in 150 countries, we bring deep local knowledge to global insurance challenges while empowering independent brokers with expanded international reach and market impact.

Compliance is key

2

We ensure programs meet legal standards across markets, offering expert support and alternative solutions to protect clients.

Partnership

3

Built on trust, transparency, and adaptability, UnisonSteadfast unites all stakeholders as trusted partners, ensuring consistent standards, clear responsibilities, and long-term relationships to simplify cross-border insurance.

Our History

2005

Founding of UnisonBrokers AG in Hamburg by Wolfgang Mercier

2010

Opening of a branch office in Chicago, IL, USA

2015

Founding of UnisonBrokers Corp. in the USA

2016

Setup of a Latin America hub via LARS network

2017

Merger with the Australian Steadfast Group and launch of UnisonSteadfast as a brand

2018

Setup of a hub in Africa via AABN

2019

Opening of the UnisonSteadfast China liaison office in Shanghai, China

2021

Opening of UnisonSteadfast representation for Southern Europe and Latin America in Xàbia (Spain)

2025

Celebration of 20th Anniversary

Our People

Muriel Mercier

Vice President & Director Business Development

+49 (0) 40 80 90 729 – 60
Muriel.Mercier@unisonsteadfast.com

Rolf Hiroshi Diekhoff

Director Account Management

+49 (0) 40 80 90 729 – 20 

Rolf.Diekhoff@unisonsteadfast.com

Locations

Hamburg

UnisonSteadfast AG

Chilehaus C, Burchardstr. 13 

D-20095 Hamburg

Germany

T +49 (0)40 – 8090729 – 0 

F +49 (0)40 – 8090729 – 99 

E info@unisonsteadfast.com

Chicago

UnisonSteadfast Corp.

200 S. Wacker Drive, 

Suite 3100 Chicago, 

Illinois 60606 

USA 



Contact:


Muriel Mercier

+49 (0) 40 80 90 729 – 60
Muriel.Mercier@unisonsteadfast.com

 

Spain

UnisonSteadfast Liaison Office Southern Europe

Thieviers, 1 esq. Juan Carlos I 

03730 Xàbia, ALICANTE

SPAIN


T +49 160 934467228 

E jenny.kubina@unisonsteadfast.com

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