Zachary A. Ballweg
FCAS, MAAA
Principal and Consulting Actuary
Brookfield, WI, US
Zach Ballweg is a principal and consulting actuary with the Milwaukee office of Milliman. He joined the firm in 2007.
Experience
Zach’s area of expertise is ratemaking and loss reserve analysis for property and casualty insurance. He has experience in many lines of business, with a special emphasis in:
- Commercial auto
- Crop insurance (federal MPCI and private programs)
- General liability
- Professional liability (including hospitals, lawyers, and physicians)
- Representations and warranties
- Workers’ compensation
Zach specializes in the evaluation of unique property and casualty exposures, providing consulting services to clients ranging from small, self-insured municipalities, to large corporate entities and MGAs.
Publications and Presentations
Zach has spoken at several insurance industry conferences, including those sponsored by the Casualty Actuarial Society.
Zach’s publications include:
- Peaks and Troughs: Reserving Through the Market Cycle, CAS E-Forum, Fall 2013.
- Actuaries and Reserve Adequacy, Contingencies, March/April 2014.
- Excess & Surplus Lines Market Hardens Further, Insurance Thought Leadership, April 19, 2022.
- Cyber Insurance Market Hardens, Insurance Thought Leadership, July 20, 2022.
- Lawyers Professional Liability Update: Profitability Streak Continues for Specialty Writers, but How Much Longer? Milliman Insight, September 22, 2022.
Professional Designations
- Fellow, Casualty Actuarial Society
- Member, American Academy of Actuaries
Education
- BS, Atmospheric and Oceanic Sciences, University of Wisconsin, Madison
- MS, Actuarial Sciences, University of Wisconsin, Madison
Publications