Business Postlethwaite and Netterville agrees to become part of global advisory firm EisnerAmper By Deanna B. Narveson - April 20, 2023 FacebookXLinkedinEmailPrint (iStock) Baton Rouge-based accounting firm Postlethwaite & Netterville is being acquired by global business advisory firm EisnerAmper, the companies announced today. Already an INSIDER? Sign in.