Deals & Cases

Arthur J. Gallagher & Co. (NYSRE: AJG) acquires majority interest in Hesse & Partner AG

17 June 2018 –

On June 11, 2018, Arthur J. Gallagher & Co. announced that it has acquired a majority interest in Swiss-based Hesse & Partner AG and Hesse Consulting GmbH. Terms of the transaction were not disclosed.


Arthur J. Gallagher & Co. is a global insurance brokerage and risk management services firm headquartered at in Rolling Meadows, Illinois. The firm was established in 1927 and is currently the third largest insurance broker in the world. Founded in 1997, Hesse is a commercial property/casualty broker and consultant offering coverages and risk advisor services primarily to industrial, manufacturing and construction clients with a particular specialism in the waste-to-energy industry.


Walder Wyss Ltd. has been acting as legal advisor to Arthur J. Gallagher & Co with regards to all Swiss contractual, corporate and regulatory aspects of the transaction. The team was led by Markus Vischer (Partner, Corporate/M&A) and included Boris Räber (Associate, Corporate/M&A), Christoph Stutz (Associate, Employment), Alexander Eichhorn (Associate, Regulatory), Vera Krüttli (Associate, Corporate/M&A), Michael Kündig, (Associate, Corporate/M&A), Nadine Mäder (Associate, Employment) and Anissa Kern (Trainee Lawyer, Corporate/M&A).