William A. Warren, CPA, CGMA, is a co-founder of RWH Myers(now Sigma7 Complex Claims & Valuations). He specializes in complex BI, extra expense and PD claims, as well as the quantification and reporting of BI values and exposures. Mr. Warren also assists clients assess damages related to builders risk & OCIP claims, patent infringements, employee fidelity, third-party liability and other commercial disputes. He also provides expert services for matters in appraisal, mediation, arbitration and litigation.