Management team



Bertrand Wollner has been Chief Executive Officer of SIGNAL IDUNA Reinsurance Ltd (SI Re) since January 2005 and was as CUO responsible for the underwriting until 2023. He has worked in reinsurance since 1987 at Veritas Rückversicherungs AG, Winterthur Rück (now part of PartnerRe) and Zurich Re (subsequently Converium/SCOR). Prior to joining SI Re, he was a member of the Executive Management Board and Chief Underwriting Officer at Zurich Re, where he was in charge of the development of the Alternative Risk Transfer division. Bertrand Wollner has an MBA in Financial Services and Insurance (MBA-FSI) from the University of St. Gallen.

member of the Executive Board and 


Andreas Gadmer has been Chief Risk Officer at SI Re since 2006. Prior to that, he spent 15 years at Zurich Financial Services working as an actuary in pricing and reserving. He was also Chief Actuary Property & Casualty at Zurich Kosmos in Vienna and Head of Pricing at Zurich Switzerland. Andreas Gadmer is an SAA-accredited actuary with a diploma in Mathematics from the Swiss Federal Institute of Technology Zurich (ETHZ) and an Executive MBA from the University of Zurich.

Adrian Suter


Adrian Suter joined SI Re in March 2016 as Head of Finance. He previously spent almost ten years as an auditor. He also has several years of experience in supervising insurance groups and companies. Adrian Suter’s last position before joining SI Re was at the Swiss Financial Market Supervisory Authority FINMA. Adrian Suter holds a Master’s degree as a business economist of applied sciences, is a Swiss Certified Public Accountant and has been accredited as an audit expert of the Federal Audit Oversight Authority FAOA since 2006.

Underwriting/Insurance-Linked Securities (ILS)




Robert Salzmann joined SI Re as an actuary in 2014 and was appointed Head of Pricing and ILS Analytics in 2017. He has assumed responsibility as Head of ILS Markets and Retrocession since 2019 and as Head of Underwriting since 2023. Before that, he had been with KPMG since 2012, where he was Assistant Manager Quantitative Finance Group for global investment banks and insurance companies. Robert Salzmann holds a Master's degree in Applied Mathematics from the Swiss Federal Institute of Technology Zurich (ETHZ) and a doctorate from the RiskLab Switzerland in ETHZ’s mathematics department. He is an SAA-accredited actuary and a Certified Extreme Event Modeler™ at the AIR Institute.

Underwriting team

UNDERWRITING MANAGER France, Belgium, Luxembourg


Karine Wild joined SI Re in 2011 as Underwriting Manager for the French, Belgian and Luxembourg markets. She has extensive reinsurance underwriting experience. Karine Wild started her career at the French branch of Nordisk Re in 1991. In 2000, she joined the client management team at Swiss Re France. In 2008, she moved to Scor to work as a Senior Property and Liability Underwriter for French clients, specialising in professional indemnity. Karine Wild holds a degree in modern languages and jurisprudence from University Sorbonne, Paris and a Master's 2 degree in insurance law from University Assas, Paris.

Thomas Bodenschatz

Underwriting Manager Germany, Northern Europe, Baltics


Thomas Bodenschatz joined SI Re in June 2023 as Underwriting Manager for the German, Northern European and Baltic markets. He joined from AXA XL Reinsurance, where he had been responsible for client relations in the DACH region since 2018, especially in property business. Previously, he served at XL Catlin and Catlin Re as market manager for Germany, Austria and Switzerland. He started his career, which spans 30 years, at Frankona Rückversicherung, subsequently GE Frankona Re, where he was, among other things, Head of Treaty Department Germany P&C. He transferred from there to Swiss Re as Senior Client Manager & Broker Coordinator as well as Head of Client Relationships Germany handling especially the regional and national customer segment. Thomas Bodenschatz holds a university degree in law.


UNDERWRITING MANAGER Italy, Spain, Poland, Bulgaria


Nicolas Schmidhauser joined SI Re in 2009 as Underwriting Manager for Spain, Italy, Switzerland and Portugal. His career in reinsurance stretches back to 1990 and he has many years of experience in underwriting, having worked at Winterthur Re (now part of PartnerRe), Guardian Re (now part of TransRe) and AIG Europe. Nicolas Schmidhauser joined Zurich Re (subsequently Converium/SCOR) initially as Senior Underwriter in 1996 and, from 2001, Senior Client Relationship Manager with responsibility for Spain, Switzerland and France. He has an Executive MBA from IDE-CESEM Business School, Madrid.

Michael Rossi

Underwriting Manager Switzerland


Michael Rossi joined SI Re as Underwriting Manager for the Swiss market in October 2023. Most recently he worked at SCOR as Market Manager/Senior Underwriter Globals for the Swiss market. Prior to that, he was Senior Underwriter CAT - US, Globals and Assumed Retro at SCOR. Michael Rossi began his 20-year career at Partner Re as a leading risk/exposure analyst. In 2007, he transferred to RMS in London as product manager in product development, design and implementation of client-oriented financial modelling solutions for the insurance and reinsurance sector. Michael Rossi holds an Executive MBA from Zurich University of Applied Sciences (ZHAW) and a Master of Science in Geography from the University of Zurich.

SIGNAL IDUNA Reinsurance Ltd

Bundesplatz 1, Postfach 7737, CH-6302 Zug, Switzerland, +41 41 709 05 05,