Dennis Sieg
DAV
Senior Manager
Düsseldorf, DE
Dennis is a senior manager within Milliman's Düsseldorf office and is currently responsible for co-leading the Life segment within Germany.
Experience
Dennis has a wide range of experience within the Life discipline, with some of the areas listed below:
- Solvency II (all pillars)
- Regulatory compliance
- Supervisor communication
- Mergers & acquisitions
- German life insurance market
- Insurance risk methodology development and basis setting
- Project management
Professional Designations
- Member, German Actuarial Association; Aktuar (DAV)
Education
- Diploma in Mathematics (University of Wuppertal)
- PhD in Mathematics (University of Trier)
Publications
Read their latest work
Article
Cyber threats, insurance and DORA
10 November 2025 - by Eamonn Phelan, Dennis Sieg, Dr. Hauke Stier
Cyber insurers—using DORA for guidance—can ensure good cyber risk management practices through strict policy conditions while minimizing client claim volatility.