M. Laurentius Marais

Principal Consultant Affiliate

Dr. M. Laurentius Marais is now an Executive Vice President at Compass Lexecon, after 28 years at Wecker Associates, most recently as a Vice President and Principal Consultant Affiliate. Dr. Marais continues to work with WEWA staff on select WEWA projects. Laurentius Marais holds graduate degrees in mathematics, statistics and business administration from Stanford University. At the Stanford Graduate School of Business he received a Ph.D. degree for a dissertation on applications of computer-intensive statistical methods to topics in accounting. He has served on the faculties of the University of Chicago and Stanford University.

Dr. Marais has extensive experience in applying statistical and mathematical theory and methods and, in particular, in assessing and “refereeing” the validity of statistical studies, inferences, and conclusions. In his decades of experience as a consultant, he has developed and applied these skills in a broad variety of complex litigation and regulatory settings, often involving the critical assessment of multiple expert submissions from a range of areas of expertise having significant statistical and mathematical content.

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Jackson WY
tel: +1 312.322.0283


  • Ph.D. - Business Administration (Major), Mathematics (Minor),
    Stanford University
  • M.S. - Statistics, Stanford University
  • M.S. - Mathematics, Stanford University
  • B.Sc. - Mathematics, Applied Mathematics, Computer Science, Stellenbosch University